diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/i945/Config.lb | 21 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/chip.h | 23 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/early_init.c | 567 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/errata.c | 30 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/i945.h | 330 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/ich7.h | 142 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/northbridge.c | 283 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/pcie_config.c | 68 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/raminit.c | 2779 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/raminit.h | 67 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/rcven.c | 338 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/reset_test.c | 28 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/udelay.c | 70 |
13 files changed, 4746 insertions, 0 deletions
diff --git a/src/northbridge/intel/i945/Config.lb b/src/northbridge/intel/i945/Config.lb new file mode 100644 index 0000000000..744437988b --- /dev/null +++ b/src/northbridge/intel/i945/Config.lb @@ -0,0 +1,21 @@ +# +# This file is part of the coreboot project. +# +# Copyright (C) 2007-2008 coresystems GmbH +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +# + +config chip.h +driver northbridge.o diff --git a/src/northbridge/intel/i945/chip.h b/src/northbridge/intel/i945/chip.h new file mode 100644 index 0000000000..6c51394d90 --- /dev/null +++ b/src/northbridge/intel/i945/chip.h @@ -0,0 +1,23 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +struct northbridge_intel_i945_config { +}; + +extern struct chip_operations northbridge_intel_i945_ops; diff --git a/src/northbridge/intel/i945/early_init.c b/src/northbridge/intel/i945/early_init.c new file mode 100644 index 0000000000..64b3ce10b6 --- /dev/null +++ b/src/northbridge/intel/i945/early_init.c @@ -0,0 +1,567 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "i945.h" +#include "pcie_config.c" + +static int i945_silicon_revision(void) +{ + return pci_read_config8(PCI_DEV(0, 0x00, 0), 8); +} + +static void i945_detect_chipset(void) +{ + u8 reg8; + + printk_info("\r\n"); + reg8 = (pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe7) & 0x70) >> 4; + switch (reg8) { + case 1: + printk_info("Mobile Intel(R) 945GM/GME Express"); + break; + case 2: + printk_info("Mobile Intel(R) 945GMS/GU Express"); + break; + case 3: + printk_info("Mobile Intel(R) 945PM Express"); + break; + case 5: + printk_info("Intel(R) 945GT Express"); + break; + case 6: + printk_info("Mobile Intel(R) 943/940GML Express"); + break; + default: + printk_info("Unknown (%02x)", reg8); /* Others reserved. */ + } + printk_info(" Chipset\r\n"); + + printk_debug("(G)MCH capable of up to FSB "); + reg8 = (pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe3) & 0xe0) >> 5; + switch (reg8) { + case 2: + printk_debug("800 MHz"); /* According to 965 spec */ + break; + case 3: + printk_debug("667 MHz"); + break; + case 4: + printk_debug("533 MHz"); + break; + default: + printk_debug("N/A MHz (%02x)", reg8); + } + printk_debug("\r\n"); + + printk_debug("(G)MCH capable of "); + reg8 = (pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe4) & 0x07); + switch (reg8) { + case 2: + printk_debug("up to DDR2-667"); + break; + case 3: + printk_debug("up to DDR2-533"); + break; + case 4: + printk_debug("DDR2-400"); + break; + default: + printk_info("unknown max. RAM clock (%02x).", reg8); /* Others reserved. */ + } + printk_debug("\r\n"); +} + +static void i945_setup_bars(void) +{ + u8 reg8; + + /* As of now, we don't have all the A0 workarounds implemented */ + if (i945_silicon_revision() == 0) + printk_info + ("Warning: i945 silicon revision A0 might not work correctly.\r\n"); + + /* Setting up Southbridge. In the northbridge code. */ + printk_debug("Setting up static southbridge registers..."); + pci_write_config32(PCI_DEV(0, 0x1f, 0), RCBA, DEFAULT_RCBA | 1); + + pci_write_config32(PCI_DEV(0, 0x1f, 0), PMBASE, DEFAULT_PMBASE | 1); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x44 /* ACPI_CNTL */ , 0x80); /* Enable ACPI BAR */ + + pci_write_config32(PCI_DEV(0, 0x1f, 0), GPIOBASE, DEFAULT_GPIOBASE | 1); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x4c /* GC */ , 0x10); /* Enable GPIOs */ + setup_ich7_gpios(); + printk_debug(" done.\r\n"); + + printk_debug("Disabling Watchdog reboot..."); + RCBA32(GCS) = (RCBA32(0x3410)) | (1 << 5); /* No reset */ + outw((1 << 11), DEFAULT_PMBASE | 0x60 | 0x08); /* halt timer */ + printk_debug(" done.\r\n"); + + printk_debug("Setting up static northbridge registers..."); + /* Set up all hardcoded northbridge BARs */ + pci_write_config32(PCI_DEV(0, 0x00, 0), EPBAR, DEFAULT_EPBAR | 1); + pci_write_config32(PCI_DEV(0, 0x00, 0), MCHBAR, DEFAULT_MCHBAR | 1); + pci_write_config32(PCI_DEV(0, 0x00, 0), PCIEXBAR, DEFAULT_PCIEXBAR | 5); /* 64MB - busses 0-63 */ + pci_write_config32(PCI_DEV(0, 0x00, 0), DMIBAR, DEFAULT_DMIBAR | 1); + pci_write_config32(PCI_DEV(0, 0x00, 0), X60BAR, DEFAULT_X60BAR | 1); + + /* Hardware default is 8MB UMA. If someone wants to make this a + * CMOS or compile time option, send a patch. + * pci_write_config16(PCI_DEV(0, 0x00, 0), GGC, 0x30); + */ + + /* Set C0000-FFFFF to access RAM on both reads and writes */ + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM0, 0x30); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM1, 0x33); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM2, 0x33); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM3, 0x33); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM4, 0x33); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM5, 0x33); + pci_write_config8(PCI_DEV(0, 0x00, 0), PAM6, 0x33); + + pci_write_config8(PCI_DEV(0, 0x00, 0), TOLUD, 0x40); /* 1G XXX dynamic! */ + + pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafebabe); + printk_debug(" done.\r\n"); + + /* Wait for MCH BAR to come up */ + printk_debug("Waiting for MCHBAR to come up..."); + if ((pci_read_config8(PCI_DEV(0, 0x0f, 0), 0xe6) & 0x2) == 0x00) { /* Bit 49 of CAPID0 */ + do { + reg8 = *(volatile u8 *)0xfed40000; + } while (!(reg8 & 0x80)); + } + printk_debug("ok\r\n"); +} + +static void i945_setup_egress_port(void) +{ + u32 reg32; + u32 timeout; + + printk_debug("Setting up Egress Port RCRB\n"); + + /* Egress Port Virtual Channel 0 Configuration */ + + /* map only TC0 to VC0 */ + reg32 = EPBAR32(EPVC0RCTL); + reg32 &= 0xffffff01; + EPBAR32(EPVC0RCTL) = reg32; + + + reg32 = EPBAR32(EPPVCCAP1); + reg32 &= ~(7 << 0); + reg32 |= 1; + EPBAR32(EPPVCCAP1) = reg32; + + /* Egress Port Virtual Channel 1 Configuration */ + reg32 = EPBAR32(0x2c); + reg32 &= 0xffffff00; + if ((MCHBAR32(CLKCFG) & 7) == 1) + reg32 |= 0x0d; /* 533MHz */ + if ((MCHBAR32(CLKCFG) & 7) == 3) + reg32 |= 0x10; /* 667MHz */ + EPBAR32(0x2c) = reg32; + + EPBAR32(EPVC1MTS) = 0x0a0a0a0a; + + reg32 = EPBAR32(EPVC1RCAP); + reg32 &= ~(0x7f << 16); + reg32 |= (0x0a << 16); + EPBAR32(EPVC1RCAP) = reg32; + + if ((MCHBAR32(CLKCFG) & 7) == 1) { /* 533MHz */ + EPBAR32(EPVC1IST + 0) = 0x009c009c; + EPBAR32(EPVC1IST + 4) = 0x009c009c; + } + + if ((MCHBAR32(CLKCFG) & 7) == 3) { /* 667MHz */ + EPBAR32(EPVC1IST + 0) = 0x00c000c0; + EPBAR32(EPVC1IST + 4) = 0x00c000c0; + } + + /* Is internal graphics enabled? */ + if (pci_read_config8(PCI_DEV(0, 0x0, 0), 54) & ((1 << 4) | (1 << 3))) { /* DEVEN */ + MCHBAR32(MMARB1) |= (1 << 17); + } + + /* Assign Virtual Channel ID 1 to VC1 */ + reg32 = EPBAR32(EPVC1RCTL); + reg32 &= ~(7 << 24); + reg32 |= (1 << 24); + EPBAR32(EPVC1RCTL) = reg32; + + reg32 = EPBAR32(EPVC1RCTL); + reg32 &= 0xffffff01; + reg32 |= (1 << 7); + EPBAR32(EPVC1RCTL) = reg32; + + EPBAR32(PORTARB + 0x00) = 0x01000001; + EPBAR32(PORTARB + 0x04) = 0x00040000; + EPBAR32(PORTARB + 0x08) = 0x00001000; + EPBAR32(PORTARB + 0x0c) = 0x00000040; + EPBAR32(PORTARB + 0x10) = 0x01000001; + EPBAR32(PORTARB + 0x14) = 0x00040000; + EPBAR32(PORTARB + 0x18) = 0x00001000; + EPBAR32(PORTARB + 0x1c) = 0x00000040; + + EPBAR32(EPVC1RCTL) |= (1 << 16); + EPBAR32(EPVC1RCTL) |= (1 << 16); + + printk_debug("Loading port arbitration table ..."); + /* Loop until bit 0 becomes 0 */ + timeout = 0x7fffff; + while ((EPBAR16(EPVC1RSTS) & 1) && --timeout) ; + if (!timeout) + printk_debug("timeout!\n"); + else + printk_debug("ok\n"); + + /* Now enable VC1 */ + EPBAR32(EPVC1RCTL) |= (1 << 31); + + printk_debug("Wait for VC1 negotiation ..."); + /* Wait for VC1 negotiation pending */ + timeout = 0x7fff; + while ((EPBAR16(EPVC1RSTS) & (1 << 1)) && --timeout) ; + if (!timeout) + printk_debug("timeout!\n"); + else + printk_debug("ok\n"); + +} + +static void ich7_setup_dmi_rcrb(void) +{ + u16 reg16; + + + reg16 = RCBA16(LCTL); + reg16 &= ~(3 << 0); + reg16 |= 1; + RCBA16(LCTL) = reg16; + + RCBA32(V0CTL) = 0x80000001; + RCBA32(V1CAP) = 0x03128010; + RCBA32(ESD) = 0x00000810; + RCBA32(RP1D) = 0x01000003; + RCBA32(RP2D) = 0x02000002; + RCBA32(RP3D) = 0x03000002; + RCBA32(RP4D) = 0x04000002; + RCBA32(HDD) = 0x0f000003; + RCBA32(RP5D) = 0x05000002; + + RCBA32(RPFN) = 0x00543210; + + pci_write_config16(PCI_DEV(0, 0x1c, 0), 0x42, 0x0141); + pci_write_config16(PCI_DEV(0, 0x1c, 4), 0x42, 0x0141); + pci_write_config16(PCI_DEV(0, 0x1c, 5), 0x42, 0x0141); + + pci_write_config32(PCI_DEV(0, 0x1c, 4), 0x54, 0x00480ce0); + pci_write_config32(PCI_DEV(0, 0x1c, 5), 0x54, 0x00500ce0); +} + +static void i945_setup_dmi_rcrb(void) +{ + u32 reg32; + u32 timeout; + + printk_debug("Setting up DMI RCRB\n"); + + /* Virtual Channel 0 Configuration */ + reg32 = DMIBAR32(DMIVC0RCTL0); + reg32 &= 0xffffff01; + DMIBAR32(DMIVC0RCTL0) = reg32; + + reg32 = DMIBAR32(DMIPVCCAP1); + reg32 &= ~(7 << 0); + reg32 |= 1; + DMIBAR32(DMIPVCCAP1) = reg32; + + reg32 = DMIBAR32(DMIVC1RCTL); + reg32 &= ~(7 << 24); + reg32 |= (1 << 24); /* NOTE: This ID must match ICH7 side */ + DMIBAR32(DMIVC1RCTL) = reg32; + + reg32 = DMIBAR32(DMIVC1RCTL); + reg32 &= 0xffffff01; + reg32 |= (1 << 7); + DMIBAR32(DMIVC1RCTL) = reg32; + + /* Now enable VC1 */ + DMIBAR32(DMIVC1RCTL) |= (1 << 31); + + printk_debug("Wait for VC1 negotiation ..."); + /* Wait for VC1 negotiation pending */ + timeout = 0x7ffff; + while ((DMIBAR16(DMIVC1RSTS) & (1 << 1)) && --timeout) ; + if (!timeout) + printk_debug("timeout!\n"); + else + printk_debug("done..\n"); +#if 1 + /* Enable Active State Power Management (ASPM) L0 state */ + + reg32 = DMIBAR32(DMILCAP); + reg32 &= ~(7 << 12); + reg32 |= (2 << 12); + + reg32 &= ~(7 << 15); + + reg32 |= (2 << 15); + DMIBAR32(DMILCAP) = reg32; + + reg32 = DMIBAR32(DMICC); + reg32 &= 0x00ffffff; + reg32 &= ~(3 << 0); + reg32 |= (1 << 0); + DMIBAR32(DMICC) = reg32; + + if (0) { + DMIBAR32(DMILCTL) |= (3 << 0); + } +#endif + + /* Last but not least, some additional steps */ + reg32 = MCHBAR32(FSBSNPCTL); + reg32 &= ~(0xff << 2); + reg32 |= (0xaa << 2); + MCHBAR32(FSBSNPCTL) = reg32; + + DMIBAR32(0x2c) = 0x86000040; + + reg32 = DMIBAR32(0x204); + reg32 &= ~0x3ff; +#if 1 + reg32 |= 0x13f; /* for x4 DMI only */ +#else + reg32 |= 0x1e4; /* for x2 DMI only */ +#endif + DMIBAR32(0x204) = reg32; + + if (pci_read_config8(PCI_DEV(0, 0x0, 0), 54) & ((1 << 4) | (1 << 3))) { /* DEVEN */ + DMIBAR32(0x200) |= (1 << 21); + } else { + DMIBAR32(0x200) &= ~(1 << 21); + } + + reg32 = DMIBAR32(0x204); + reg32 &= ~((1 << 11) | (1 << 10)); + DMIBAR32(0x204) = reg32; + + reg32 = DMIBAR32(0x204); + reg32 &= ~(0xff << 12); + reg32 |= (0x0d << 12); + DMIBAR32(0x204) = reg32; + + DMIBAR32(DMICTL1) |= (3 << 24); + + reg32 = DMIBAR32(0x200); + reg32 &= ~(0x3 << 26); + reg32 |= (0x02 << 26); + DMIBAR32(0x200) = reg32; + + DMIBAR32(DMIDRCCFG) &= ~(1 << 31); + DMIBAR32(DMICTL2) |= (1 << 31); + + if (i945_silicon_revision() >= 3) { + reg32 = DMIBAR32(0xec0); + reg32 &= 0x0fffffff; + reg32 |= (2 << 28); + DMIBAR32(0xec0) = reg32; + + reg32 = DMIBAR32(0xed4); + reg32 &= 0x0fffffff; + reg32 |= (2 << 28); + DMIBAR32(0xed4) = reg32; + + reg32 = DMIBAR32(0xee8); + reg32 &= 0x0fffffff; + reg32 |= (2 << 28); + DMIBAR32(0xee8) = reg32; + + reg32 = DMIBAR32(0xefc); + reg32 &= 0x0fffffff; + reg32 |= (2 << 28); + DMIBAR32(0xefc) = reg32; + } + + /* wait for bit toggle to 0 */ + printk_debug("Waiting for DMI hardware..."); + timeout = 0x7fffff; + while ((DMIBAR8(0x32) & (1 << 1)) && --timeout) ; + if (!timeout) + printk_debug("timeout!\n"); + else + printk_debug("ok\n"); + + DMIBAR32(0x1c4) = 0xffffffff; + DMIBAR32(0x1d0) = 0xffffffff; + DMIBAR32(0x228) = 0xffffffff; + + DMIBAR32(0x308) = DMIBAR32(0x308); + DMIBAR32(0x314) = DMIBAR32(0x314); + DMIBAR32(0x324) = DMIBAR32(0x324); + DMIBAR32(0x328) = DMIBAR32(0x328); + DMIBAR32(0x338) = DMIBAR32(0x334); + DMIBAR32(0x338) = DMIBAR32(0x338); + + if (i945_silicon_revision() == 1 && ((MCHBAR8(0xe08) & (1 << 5)) == 1)) { + if ((MCHBAR32(0x214) & 0xf) != 0x3) { + printk_info + ("DMI link requires A1 stepping workaround. Rebooting.\n"); + reg32 = MCHBAR32(MMARB1); + reg32 &= 0xfffffff8; + reg32 |= 3; + outb(0x06, 0xcf9); + for (;;) ; /* wait for reset */ + } + } +} + +static void i945_setup_pci_express_x16(void) +{ + u32 timeout; + u32 reg32; + u16 reg16; + u8 reg8; + + /* For now we just disable the x16 link */ + printk_debug("Disabling PCI Express x16 Link\n"); + + MCHBAR16(UPMC1) |= (1 << 5) | (1 << 0); + + reg8 = pcie_read_config8(PCI_DEV(0, 0x01, 0), BCTRL1); + reg8 |= (1 << 6); + pcie_write_config8(PCI_DEV(0, 0x01, 0), BCTRL1, reg8); + + reg32 = pcie_read_config32(PCI_DEV(0, 0x01, 0), 0x224); + reg32 |= (1 << 8); + pcie_write_config32(PCI_DEV(0, 0x01, 0), 0x224, reg32); + + reg8 = pcie_read_config8(PCI_DEV(0, 0x01, 0), BCTRL1); + reg8 &= ~(1 << 6); + pcie_write_config8(PCI_DEV(0, 0x01, 0), BCTRL1, reg8); + + printk_debug("Wait for link to enter detect state... "); + timeout = 0x7fffff; + for (reg32 = pcie_read_config32(PCI_DEV(0, 0x01, 0), 0x214); + (reg32 & 0x000f0000) && --timeout;) ; + if (!timeout) + printk_debug("timeout!\n"); + else + printk_debug("ok\n"); + + /* Finally: Disable the PCI config header */ + reg16 = pci_read_config16(PCI_DEV(0, 0x00, 0), DEVEN); + reg16 &= ~DEVEN_D1F0; + pci_write_config16(PCI_DEV(0, 0x00, 0), DEVEN, reg16); +} + +static void i945_setup_root_complex_topology(void) +{ + u32 reg32; + + printk_debug("Setting up Root Complex Topology\n"); + /* Egress Port Root Topology */ + reg32 = EPBAR32(EPESD); + reg32 &= 0xff00ffff; + reg32 |= (1 << 16); + EPBAR32(EPESD) = reg32; + + EPBAR32(EPLE1D) |= (1 << 0); + + EPBAR32(EPLE1A) = DEFAULT_PCIEXBAR + 0x4000; + + EPBAR32(EPLE2D) |= (1 << 0); + + /* DMI Port Root Topology */ + reg32 = DMIBAR32(DMILE1D); + reg32 &= 0x00ffffff; + DMIBAR32(DMILE1D) = reg32; + + reg32 = DMIBAR32(DMILE1D); + reg32 &= 0xff00ffff; + reg32 |= (2 << 16); + DMIBAR32(DMILE1D) = reg32; + + DMIBAR32(DMILE1D) |= (1 << 0); + + DMIBAR32(DMILE1A) = DEFAULT_PCIEXBAR + 0x8000; + + DMIBAR32(DMILE2D) |= (1 << 0); + + DMIBAR32(DMILE2A) = DEFAULT_PCIEXBAR + 0x5000; + + /* PCI Express x16 Port Root Topology */ + if (pci_read_config8(PCI_DEV(0, 0x00, 0), DEVEN) & DEVEN_D1F0) { + pcie_write_config32(PCI_DEV(0, 0x01, 0), 0x158, + DEFAULT_PCIEXBAR + 0x5000); + + reg32 = pcie_read_config32(PCI_DEV(0, 0x01, 0), 0x150); + reg32 |= (1 << 0); + pcie_write_config32(PCI_DEV(0, 0x01, 0), 0x150, reg32); + } +} + +static void ich7_setup_root_complex_topology(void) +{ + RCBA32(0x104) = 0x00000802; + RCBA32(0x110) = 0x00000001; + RCBA32(0x114) = 0x00000000; + RCBA32(0x118) = 0x00000000; +} + +static void ich7_setup_pci_express(void) +{ + RCBA32(CG) |= (1 << 0); + + pci_write_config32(PCI_DEV(0, 0x1c, 0), 0x54, 0x00000060); + + pci_write_config32(PCI_DEV(0, 0x1c, 0), 0xd8, 0x00110000); +} + +static void i945_early_initialization(void) +{ + /* Print some chipset specific information */ + i945_detect_chipset(); + + /* Setup all BARs required for early PCIe and raminit */ + i945_setup_bars(); + + /* Change port80 to LPC */ + RCBA32(GCS) &= (~0x04); +} + +static void i945_late_initialization(void) +{ + i945_setup_egress_port(); + + ich7_setup_root_complex_topology(); + + ich7_setup_pci_express(); + + ich7_setup_dmi_rcrb(); + + i945_setup_dmi_rcrb(); + + i945_setup_pci_express_x16(); + + i945_setup_root_complex_topology(); +} diff --git a/src/northbridge/intel/i945/errata.c b/src/northbridge/intel/i945/errata.c new file mode 100644 index 0000000000..8916a4af49 --- /dev/null +++ b/src/northbridge/intel/i945/errata.c @@ -0,0 +1,30 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +int fixup_i945_errata(void) +{ + u32 reg32; + + /* Mobile Intel 945 Express only */ + reg32 = MCHBAR32(FSBPMC3); + reg32 &= ~((1 << 13) | (1 << 29)); + MCHBAR32(FSBPMC3) = reg32; + + return 0; +} diff --git a/src/northbridge/intel/i945/i945.h b/src/northbridge/intel/i945/i945.h new file mode 100644 index 0000000000..ea9f74cc2f --- /dev/null +++ b/src/northbridge/intel/i945/i945.h @@ -0,0 +1,330 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __NORTHBRIDGE_INTEL_I945_I945_H__ +#define __NORTHBRIDGE_INTEL_I945_I945_H__ 1 + +#include "ich7.h" + +/* Device 0:0.0 PCI configuration space (Host Bridge) */ + +#define EPBAR 0x40 +#define MCHBAR 0x44 +#define PCIEXBAR 0x48 +#define DMIBAR 0x4c +#define X60BAR 0x60 + +/* Northbridge BARs */ +#define DEFAULT_PCIEXBAR 0xf0000000 +#define DEFAULT_X60BAR 0xfed13000 +#define DEFAULT_MCHBAR 0xfed14000 +#define DEFAULT_DMIBAR 0xfed18000 +#define DEFAULT_EPBAR 0xfed19000 + +#define GGC 0x52 + +#define DEVEN 0x54 +#define DEVEN_D0F0 (1 << 0) +#define DEVEN_D1F0 (1 << 1) +#define DEVEN_D2F0 (1 << 3) +#define DEVEN_D2F1 (1 << 4) +#ifndef BOARD_DEVEN +#define BOARD_DEVEN ( DEVEN_D0F0 | DEVEN_D2F0 | DEVEN_D2F1 ) +#endif + +#define PAM0 0x90 +#define PAM1 0x91 +#define PAM2 0x92 +#define PAM3 0x93 +#define PAM4 0x94 +#define PAM5 0x95 +#define PAM6 0x96 + +#define LAC 0x97 /* Legacy Access Control */ +#define TOLUD 0x9c /* Top of Low Used Memory */ +#define SMRAM 0x9d +#define ESMRAM 0x9e + +#define TOM 0xa0 + +#define SKPAD 0xdc /* Scratchpad */ + +/* Device 0:1.0 PCI configuration space (PCI Express) */ + +#define BCTRL1 0x3e /* 8bit */ + + +/* Device 0:2.0 PCI configuration space (Graphics Device) */ + +#define GCFC 0xf0 /* Graphics Clock Frequency and Gating Control */ + + +/* + * MCHBAR + */ + +#define MCHBAR8(x) *((volatile u8 *)(DEFAULT_MCHBAR + x)) +#define MCHBAR16(x) *((volatile u16 *)(DEFAULT_MCHBAR + x)) +#define MCHBAR32(x) *((volatile u32 *)(DEFAULT_MCHBAR + x)) + +/* Chipset Control Registers */ +#define FSBPMC3 0x40 /* 32bit */ +#define FSBPMC4 0x44 /* 32bit */ +#define FSBSNPCTL 0x48 /* 32bit */ +#define SLPCTL 0x90 /* 32bit */ + +#define C0DRB0 0x100 /* 8bit */ +#define C0DRB1 0x101 /* 8bit */ +#define C0DRB2 0x102 /* 8bit */ +#define C0DRB3 0x103 /* 8bit */ +#define C0DRA0 0x108 /* 8bit */ +#define C0DRA2 0x109 /* 8bit */ +#define C0DCLKDIS 0x10c /* 8bit */ +#define C0BNKARC 0x10e /* 16bit */ +#define C0DRT0 0x110 /* 32bit */ +#define C0DRT1 0x114 /* 32bit */ +#define C0DRT2 0x118 /* 32bit */ +#define C0DRT3 0x11c /* 32bit */ +#define C0DRC0 0x120 /* 32bit */ +#define C0DRC1 0x124 /* 32bit */ +#define C0DRC2 0x128 /* 32bit */ +#define C0AIT 0x130 /* 64bit */ +#define C0DCCFT 0x138 /* 64bit */ +#define C0GTEW 0x140 /* 32bit */ +#define C0GTC 0x144 /* 32bit */ +#define C0DTPEW 0x148 /* 64bit */ +#define C0DTAEW 0x150 /* 64bit */ +#define C0DTC 0x158 /* 32bit */ +#define C0DMC 0x164 /* 32bit */ +#define C0ODT 0x168 /* 64bit */ + +#define C1DRB0 0x180 /* 8bit */ +#define C1DRB1 0x181 /* 8bit */ +#define C1DRB2 0x182 /* 8bit */ +#define C1DRB3 0x183 /* 8bit */ +#define C1DRA0 0x188 /* 8bit */ +#define C1DCLKDIS 0x18c /* 8bit */ +#define C1BNKARC 0x18e /* 16bit */ +#define C1DRT0 0x190 /* 32bit */ +#define C1DRT1 0x194 /* 32bit */ +#define C1DRT2 0x198 /* 32bit */ +#define C1DRT3 0x19c /* 32bit */ +#define C1DRC0 0x1a0 /* 32bit */ +#define C1DRC1 0x1a4 /* 32bit */ +#define C1DRC2 0x1a8 /* 32bit */ +#define C1AIT 0x1b0 /* 64bit */ +#define C1DCCFT 0x1b8 /* 64bit */ +#define C1GTEW 0x1c0 /* 32bit */ +#define C1GTC 0x1c4 /* 32bit */ +#define C1DTPEW 0x1c8 /* 64bit */ +#define C1DTAEW 0x1d0 /* 64bit */ +#define C1DTC 0x1d8 /* 32bit */ +#define C1DMC 0x1e4 /* 32bit */ +#define C1ODT 0x1e8 /* 64bit */ + +#define DCC 0x200 /* 32bit */ +#define CCCFT 0x208 /* 64bit */ +#define WCC 0x218 /* 32bit */ +#define MMARB0 0x220 /* 32bit */ +#define MMARB1 0x224 /* 32bit */ +#define SBTEST 0x230 /* 32bit */ +#define SBOCC 0x238 /* 32bit */ +#define ODTC 0x284 /* 32bit */ +#define SMVREFC 0x2a0 /* 32bit */ +#define DRTST 0x2a8 /* 32bit */ +#define REPC 0x2e0 /* 32bit */ +#define DQSMT 0x2f4 /* 16bit */ +#define RCVENMT 0x2f8 /* 32bit */ + +#define C0R0B00DQST 0x300 /* 64bit */ + +#define C0WL0REOST 0x340 /* 8bit */ +#define C0WL1REOST 0x341 /* 8bit */ +#define C0WL2REOST 0x342 /* 8bit */ +#define C0WL3REOST 0x343 /* 8bit */ +#define WDLLBYPMODE 0x360 /* 16bit */ +#define C0WDLLCMC 0x36c /* 32bit */ +#define C0HCTC 0x37c /* 8bit */ + +#define C1R0B00DQST 0x380 /* 64bit */ + +#define C1WL0REOST 0x3c0 /* 8bit */ +#define C1WL1REOST 0x3c1 /* 8bit */ +#define C1WL2REOST 0x3c2 /* 8bit */ +#define C1WL3REOST 0x3c3 /* 8bit */ +#define C1WDLLCMC 0x3ec /* 32bit */ +#define C1HCTC 0x3fc /* 8bit */ + +#define GBRCOMPCTL 0x400 /* 32bit */ + +#define SMSRCTL 0x408 /* XXX who knows */ +#define C0DRAMW 0x40c /* 16bit */ +#define G1SC 0x410 /* 8bit */ +#define G2SC 0x418 /* 8bit */ +#define G3SC 0x420 /* 8bit */ +#define G4SC 0x428 /* 8bit */ +#define G5SC 0x430 /* 8bit */ +#define G6SC 0x438 /* 8bit */ + +#define C1DRAMW 0x48c /* 16bit */ +#define G7SC 0x490 /* 8bit */ +#define G8SC 0x498 /* 8bit */ + +#define G1SRPUT 0x500 /* 256bit */ +#define G1SRPDT 0x520 /* 256bit */ +#define G2SRPUT 0x540 /* 256bit */ +#define G2SRPDT 0x560 /* 256bit */ +#define G3SRPUT 0x580 /* 256bit */ +#define G3SRPDT 0x5a0 /* 256bit */ +#define G4SRPUT 0x5c0 /* 256bit */ +#define G4SRPDT 0x5e0 /* 256bit */ +#define G5SRPUT 0x600 /* 256bit */ +#define G5SRPDT 0x620 /* 256bit */ +#define G6SRPUT 0x640 /* 256bit */ +#define G6SRPDT 0x660 /* 256bit */ +#define G7SRPUT 0x680 /* 256bit */ +#define G7SRPDT 0x6a0 /* 256bit */ +#define G8SRPUT 0x6c0 /* 256bit */ +#define G8SRPDT 0x6e0 /* 256bit */ + +/* Clock Controls */ +#define CLKCFG 0xc00 /* 32bit */ +#define UPMC1 0xc14 /* 16bit */ +#define CPCTL 0xc16 /* 16bit */ +#define SSKPD 0xc1c /* 16bit (scratchpad) */ +#define UPMC2 0xc20 /* 16bit */ +#define UPMC4 0xc30 /* 32bit */ +#define PLLMON 0xc34 /* 32bit */ +#define HGIPMC2 0xc38 /* 32bit */ + +/* Thermal Management Controls */ +#define TSC1 0xc88 /* 8bit */ +#define TSS1 0xc8a /* 8bit */ +#define TR1 0xc8b /* 8bit */ +#define TSTTP1 0xc8c /* 32bit */ +#define TCO1 0xc92 /* 8bit */ +#define THERM1_1 0xc94 /* 8bit */ +#define TCOF1 0xc96 /* 8bit */ +#define TIS1 0xc9a /* 16bit */ +#define TSTTP1_2 0xc9c /* 32bit */ +#define IUB 0xcd0 /* 32bit */ +#define TSC0_1 0xcd8 /* 8bit */ +#define TSS0 0xcda /* 8bit */ +#define TR0 0xcdb /* 8bit */ +#define TSTTP0_1 0xcdc /* 32bit */ +#define TCO0 0xce2 /* 8bit */ +#define THERM0_1 0xce4 /* 8bit */ +#define TCOF0 0xce6 /* 8bit */ +#define TIS0 0xcea /* 16bit */ +#define TSTTP0_2 0xcec /* 32bit */ +#define TERRCMD 0xcf0 /* 8bit */ +#define TSMICMD 0xcf1 /* 8bit */ +#define TSCICMD 0xcf2 /* 8bit */ +#define TINTRCMD 0xcf3 /* 8bit */ +#define EXTTSCS 0xcff /* 8bit */ +#define DFT_STRAP1 0xe08 /* 32bit */ + +/* ACPI Power Management Controls */ + +#define MIPMC3 0xbd8 /* 32bit */ + +#define C2C3TT 0xf00 /* 32bit */ +#define C3C4TT 0xf04 /* 32bit */ + +#define MIPMC4 0xf08 /* 16bit */ +#define MIPMC5 0xf0a /* 16bit */ +#define MIPMC6 0xf0c /* 16bit */ +#define MIPMC7 0xf0e /* 16bit */ +#define PMCFG 0xf10 /* 32bit */ +#define SLFRCS 0xf14 /* 32bit */ +#define GIPMC1 0xfb0 /* 32bit */ +#define FSBPMC1 0xfb8 /* 32bit */ +#define UPMC3 0xfc0 /* 32bit */ +#define ECO 0xffc /* 32bit */ + +/* + * EPBAR - Egress Port Root Complex Register Block + */ + +#define EPBAR8(x) *((volatile u8 *)(DEFAULT_EPBAR + x)) +#define EPBAR16(x) *((volatile u16 *)(DEFAULT_EPBAR + x)) +#define EPBAR32(x) *((volatile u32 *)(DEFAULT_EPBAR + x)) + +#define EPPVCCAP1 0x004 /* 32bit */ +#define EPPVCCAP2 0x008 /* 32bit */ + +#define EPVC0RCAP 0x010 /* 32bit */ +#define EPVC0RCTL 0x014 /* 32bit */ +#define EPVC0RSTS 0x01a /* 16bit */ + +#define EPVC1RCAP 0x01c /* 32bit */ +#define EPVC1RCTL 0x020 /* 32bit */ +#define EPVC1RSTS 0x026 /* 16bit */ + +#define EPVC1MTS 0x028 /* 32bit */ +#define EPVC1IST 0x038 /* 64bit */ + +#define EPESD 0x044 /* 32bit */ + +#define EPLE1D 0x050 /* 32bit */ +#define EPLE1A 0x058 /* 64bit */ +#define EPLE2D 0x060 /* 32bit */ +#define EPLE2A 0x068 /* 64bit */ + +#define PORTARB 0x100 /* 256bit */ + +/* + * DMIBAR + */ + +#define DMIBAR8(x) *((volatile u8 *)(DEFAULT_DMIBAR + x)) +#define DMIBAR16(x) *((volatile u16 *)(DEFAULT_DMIBAR + x)) +#define DMIBAR32(x) *((volatile u32 *)(DEFAULT_DMIBAR + x)) + +#define DMIVCECH 0x000 /* 32bit */ +#define DMIPVCCAP1 0x004 /* 32bit */ +#define DMIPVCCAP2 0x008 /* 32bit */ + +#define DMIPVCCCTL 0x00c /* 16bit */ + +#define DMIVC0RCAP 0x010 /* 32bit */ +#define DMIVC0RCTL0 0x014 /* 32bit */ +#define DMIVC0RSTS 0x01a /* 16bit */ + +#define DMIVC1RCAP 0x01c /* 32bit */ +#define DMIVC1RCTL 0x020 /* 32bit */ +#define DMIVC1RSTS 0x026 /* 16bit */ + +#define DMILE1D 0x050 /* 32bit */ +#define DMILE1A 0x058 /* 64bit */ +#define DMILE2D 0x060 /* 32bit */ +#define DMILE2A 0x068 /* 64bit */ + +#define DMILCAP 0x084 /* 32bit */ +#define DMILCTL 0x088 /* 16bit */ +#define DMILSTS 0x08a /* 16bit */ + +#define DMICTL1 0x0f0 /* 32bit */ +#define DMICTL2 0x0fc /* 32bit */ + +#define DMICC 0x208 /* 32bit */ + +#define DMIDRCCFG 0xeb4 /* 32bit */ + +#endif diff --git a/src/northbridge/intel/i945/ich7.h b/src/northbridge/intel/i945/ich7.h new file mode 100644 index 0000000000..2b3a15f00b --- /dev/null +++ b/src/northbridge/intel/i945/ich7.h @@ -0,0 +1,142 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __NORTHBRIDGE_INTEL_I945_ICH7_H__ +#define __NORTHBRIDGE_INTEL_I945_ICH7_H__ 1 + +/* Southbridge IO BARs */ +/* TODO Make sure these don't get changed by stage2 */ +#define GPIOBASE 0x48 +#define DEFAULT_GPIOBASE 0x480 + +#define PMBASE 0x40 +#define DEFAULT_PMBASE 0x500 + +/* Root Complex Register Block */ +#define RCBA 0xf0 +#define DEFAULT_RCBA 0xfed1c000 + +#define RCBA8(x) *((volatile u8 *)(DEFAULT_RCBA + x)) +#define RCBA16(x) *((volatile u16 *)(DEFAULT_RCBA + x)) +#define RCBA32(x) *((volatile u32 *)(DEFAULT_RCBA + x)) + +#define VCH 0x0000 /* 32bit */ +#define VCAP1 0x0004 /* 32bit */ +#define VCAP2 0x0008 /* 32bit */ +#define PVC 0x000c /* 16bit */ +#define PVS 0x000e /* 16bit */ + +#define V0CAP 0x0010 /* 32bit */ +#define V0CTL 0x0014 /* 32bit */ +#define V0STS 0x001a /* 16bit */ + +#define V1CAP 0x001c /* 32bit */ +#define V1CTL 0x0020 /* 32bit */ +#define V1STS 0x0026 /* 16bit */ + +#define RCTCL 0x0100 /* 32bit */ +#define ESD 0x0104 /* 32bit */ +#define ULD 0x0110 /* 32bit */ +#define ULBA 0x0118 /* 64bit */ + +#define RP1D 0x0120 /* 32bit */ +#define RP1BA 0x0128 /* 64bit */ +#define RP2D 0x0130 /* 32bit */ +#define RP2BA 0x0138 /* 64bit */ +#define RP3D 0x0140 /* 32bit */ +#define RP3BA 0x0138 /* 64bit */ +#define RP4D 0x0150 /* 32bit */ +#define RP4BA 0x0158 /* 64bit */ +#define HDD 0x0160 /* 32bit */ +#define HDBA 0x0168 /* 64bit */ +#define RP5D 0x0170 /* 32bit */ +#define RP5BA 0x0178 /* 64bit */ +#define RP6D 0x0180 /* 32bit */ +#define RP6BA 0x0188 /* 64bit */ + +#define ILCL 0x01a0 /* 32bit */ +#define LCAP 0x01a4 /* 32bit */ +#define LCTL 0x01a8 /* 16bit */ +#define LSTS 0x01aa /* 16bit */ + +#define RPC 0x0224 /* 32bit */ +#define RPFN 0x0238 /* 32bit */ + +#define TRSR 0x1e00 /* 8bit */ +#define TRCR 0x1e10 /* 64bit */ +#define TWDR 0x1e18 /* 64bit */ + +#define IOTR0 0x1e80 /* 64bit */ +#define IOTR1 0x1e88 /* 64bit */ +#define IOTR2 0x1e90 /* 64bit */ +#define IOTR3 0x1e98 /* 64bit */ + +#define TCTL 0x3000 /* 8bit */ + +#define D31IP 0x3100 /* 32bit */ +#define D30IP 0x3104 /* 32bit */ +#define D29IP 0x3108 /* 32bit */ +#define D28IP 0x310c /* 32bit */ +#define D27IP 0x3110 /* 32bit */ +#define D31IR 0x3140 /* 16bit */ +#define D30IR 0x3142 /* 16bit */ +#define D29IR 0x3144 /* 16bit */ +#define D28IR 0x3146 /* 16bit */ +#define D27IR 0x3148 /* 16bit */ +#define OIC 0x31ff /* 8bit */ + +#define RC 0x3400 /* 32bit */ +#define HPTC 0x3404 /* 32bit */ +#define GCS 0x3410 /* 32bit */ +#define BUC 0x3414 /* 32bit */ +#define FD 0x3418 /* 32bit */ +#define CG 0x341c /* 32bit */ + +/* Function Disable (FD) register values. + * Setting a bit disables the corresponding + * feature. + * Not all features might be disabled on + * all chipsets. Esp. ICH-7U is picky. + */ +#define FD_PCIE6 (1 << 21) +#define FD_PCIE5 (1 << 20) +#define FD_PCIE4 (1 << 19) +#define FD_PCIE3 (1 << 18) +#define FD_PCIE2 (1 << 17) +#define FD_PCIE1 (1 << 16) +#define FD_EHCI (1 << 15) +#define FD_LPCB (1 << 14) + +/* UHCI must be disabled from 4 downwards. + * If UHCI controllers get disabled, EHCI + * must know about it, too! */ +#define FD_UHCI4 (1 << 11) +#define FD_UHCI34 (1 << 10) | FD_UHCI4 +#define FD_UHCI234 (1 << 9) | FD_UHCI3 +#define FD_UHCI1234 (1 << 8) | FD_UHCI2 + +#define FD_INTLAN (1 << 7) +#define FD_ACMOD (1 << 6) +#define FD_ACAUD (1 << 5) +#define FD_HDAUD (1 << 4) +#define FD_SMBUS (1 << 3) +#define FD_SATA (1 << 2) +#define FD_PATA (1 << 1) + +#endif diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c new file mode 100644 index 0000000000..6aa9f2d545 --- /dev/null +++ b/src/northbridge/intel/i945/northbridge.c @@ -0,0 +1,283 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <arch/io.h> +#include <stdint.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/hypertransport.h> +#include <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include "chip.h" +#include "i945.h" + +static void ram_resource(device_t dev, unsigned long index, unsigned long basek, + unsigned long sizek) +{ + struct resource *resource; + + resource = new_resource(dev, index); + resource->base = ((resource_t) basek) << 10; + resource->size = ((resource_t) sizek) << 10; + resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | + IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; +} + +static void pci_domain_read_resources(device_t dev) +{ + struct resource *resource; + + /* Initialize the system wide io space constraints */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); + resource->base = 0; + resource->size = 0; + resource->align = 0; + resource->gran = 0; + resource->limit = 0xffffUL; + resource->flags = + IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; + + /* Initialize the system wide memory resources constraints */ + resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); + resource->base = 0; + resource->size = 0; + resource->align = 0; + resource->gran = 0; + resource->limit = 0xffffffffUL; + resource->flags = + IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; +} + +static void tolm_test(void *gp, struct device *dev, struct resource *new) +{ + struct resource **best_p = gp; + struct resource *best; + best = *best_p; + if (!best || (best->base > new->base)) { + best = new; + } + *best_p = best; +} + +static uint32_t find_pci_tolm(struct bus *bus) +{ + struct resource *min; + uint32_t tolm; + min = 0; + search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, + &min); + tolm = 0xffffffffUL; + if (min && tolm > min->base) { + tolm = min->base; + } + return tolm; +} + +static void pci_domain_set_resources(device_t dev) +{ + uint32_t pci_tolm; + uint8_t tolud, reg8; + uint16_t reg16; + unsigned long long tomk, tolmk; + + pci_tolm = find_pci_tolm(&dev->link[0]); + + printk_spew("Base of stolen memory: 0x%08x\n", + pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x5c)); + + tolud = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), 0x9c); + printk_spew("Top of Low Used DRAM: 0x%08x\n", tolud << 24); + + tomk = tolud << 14; + + /* Note: subtract IGD device and TSEG */ + reg8 = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), 0x9e); + if (reg8 & 1) { + int tseg_size = 0; + printk_debug("TSEG decoded, subtracting "); + reg8 >>= 1; + reg8 &= 3; + switch (reg8) { + case 0: + tseg_size = 1024; + break; + case 1: + tseg_size = 2048; + break; + case 2: + tseg_size = 8192; + break; + } + + printk_debug("%dM\n", tseg_size >> 10); + tomk -= tseg_size; + } + + reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC); + if (!(reg16 & 2)) { + int uma_size = 0; + printk_debug("IGD decoded, subtracting "); + reg16 >>= 4; + reg16 &= 7; + switch (reg16) { + case 1: + uma_size = 1024; + break; + case 3: + uma_size = 8192; + break; + } + + printk_debug("%dM UMA\n", uma_size >> 10); + tomk -= uma_size; + } + + /* The following needs to be 2 lines, otherwise the second + * number is always 0 + */ + printk_info("Available memory: %dK", tomk); + printk_info(" (%dM)\n", (tomk >> 10)); + + tolmk = tomk; + + /* Report the memory regions */ + ram_resource(dev, 3, 0, 640); + ram_resource(dev, 4, 768, (tolmk - 768)); + if (tomk > 4 * 1024 * 1024) { + ram_resource(dev, 5, 4096 * 1024, tomk - 4 * 1024 * 1024); + } + + assign_resources(&dev->link[0]); +} + +static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max) +{ + max = pci_scan_bus(&dev->link[0], 0, 0xff, max); + /* TODO We could determine how many PCIe busses we need in + * the bar. For now that number is hardcoded to a max of 64. + */ + return max; +} + +static struct device_operations pci_domain_ops = { + .read_resources = pci_domain_read_resources, + .set_resources = pci_domain_set_resources, + .enable_resources = enable_childrens_resources, + .init = 0, + .scan_bus = pci_domain_scan_bus, + .ops_pci_bus = &pci_cf8_conf1, /* Do we want to use the memory mapped space here? */ +}; + +static void mc_read_resources(device_t dev) +{ + struct resource *resource; + + pci_dev_read_resources(dev); + + /* So, this is one of the big mysteries in the coreboot resource + * allocator. This resource should make sure that the address space + * of the PCIe memory mapped config space bar. But it does not. + */ + + /* We use 0xcf as an unused index for our PCIe bar so that we find it again */ + resource = new_resource(dev, 0xcf); + resource->base = DEFAULT_PCIEXBAR; + resource->size = 64 * 1024 * 1024; /* 64MB hard coded PCIe config space */ + resource->flags = + IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | + IORESOURCE_ASSIGNED; + printk_debug("Adding PCIe enhanced config space BAR 0x%08x-0x%08x.\n", + resource->base, (resource->base + resource->size)); +} + +static void mc_set_resources(device_t dev) +{ + struct resource *resource, *last; + + /* Report the PCIe BAR */ + last = &dev->resource[dev->resources]; + resource = find_resource(dev, 0xcf); + if (resource) { + report_resource_stored(dev, resource, "<mmconfig>"); + } + + /* And call the normal set_resources */ + pci_dev_set_resources(dev); +} + +static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) +{ + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); +} + +static struct pci_operations intel_pci_ops = { + .set_subsystem = intel_set_subsystem, +}; + +static struct device_operations mc_ops = { + .read_resources = mc_read_resources, + .set_resources = mc_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = 0, + .scan_bus = 0, + .ops_pci = &intel_pci_ops, +}; + +static const struct pci_driver mc_driver __pci_driver = { + .ops = &mc_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = 0x27a0, +}; + +static void cpu_bus_init(device_t dev) +{ + initialize_cpus(&dev->link[0]); +} + +static void cpu_bus_noop(device_t dev) +{ +} + +static struct device_operations cpu_bus_ops = { + .read_resources = cpu_bus_noop, + .set_resources = cpu_bus_noop, + .enable_resources = cpu_bus_noop, + .init = cpu_bus_init, + .scan_bus = 0, +}; + +static void enable_dev(device_t dev) +{ + /* Set the operations if it is a special bus type */ + if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { + dev->ops = &pci_domain_ops; + } else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) { + dev->ops = &cpu_bus_ops; + } +} + +struct chip_operations northbridge_intel_i945_ops = { + CHIP_NAME("Intel i945 Northbridge") + .enable_dev = enable_dev, +}; diff --git a/src/northbridge/intel/i945/pcie_config.c b/src/northbridge/intel/i945/pcie_config.c new file mode 100644 index 0000000000..94a088bf9d --- /dev/null +++ b/src/northbridge/intel/i945/pcie_config.c @@ -0,0 +1,68 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "i945.h" + +static inline __attribute__ ((always_inline)) +u8 pcie_read_config8(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read8(addr); +} + +static inline __attribute__ ((always_inline)) +u16 pcie_read_config16(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read16(addr); +} + +static inline __attribute__ ((always_inline)) +u32 pcie_read_config32(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read32(addr); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config8(device_t dev, unsigned int where, u8 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write8(addr, value); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config16(device_t dev, unsigned int where, u16 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write16(addr, value); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config32(device_t dev, unsigned int where, u32 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write32(addr, value); +} diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c new file mode 100644 index 0000000000..cae14ed80b --- /dev/null +++ b/src/northbridge/intel/i945/raminit.c @@ -0,0 +1,2779 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + + +#include <cpu/x86/mem.h> +#include <cpu/x86/mtrr.h> +#include <cpu/x86/cache.h> +#include <spd.h> +#include "raminit.h" +#include "i945.h" + +#include "lib/memset.c" + +#define DEBUG_RAM_SETUP + +/* Debugging macros. */ +#if defined(DEBUG_RAM_SETUP) +#define PRINTK_DEBUG(x...) printk_debug(x) +#else +#define PRINTK_DEBUG(x...) +#endif + + +#define RAM_INITIALIZATION_COMPLETE (1 << 19) + +#define RAM_COMMAND_SELF_REFRESH (0x0 << 16) +#define RAM_COMMAND_NOP (0x1 << 16) +#define RAM_COMMAND_PRECHARGE (0x2 << 16) +#define RAM_COMMAND_MRS (0x3 << 16) +#define RAM_COMMAND_EMRS (0x4 << 16) +#define RAM_COMMAND_CBR (0x6 << 16) +#define RAM_COMMAND_NORMAL (0x7 << 16) + +#define RAM_EMRS_1 (0x0 << 21) +#define RAM_EMRS_2 (0x1 << 21) +#define RAM_EMRS_3 (0x2 << 21) + +static void do_ram_command(u32 command) +{ + u32 reg32; + + reg32 = MCHBAR32(DCC); + reg32 &= ~( (3<<21) | (1<<20) | (1<<19) | (7 << 16) ); + reg32 |= command; + + /* Also set Init Complete */ + if (command == RAM_COMMAND_NORMAL) + reg32 |= RAM_INITIALIZATION_COMPLETE; + + PRINTK_DEBUG(" Sending RAM command 0x%08x", reg32); + + MCHBAR32(DCC) = reg32; /* This is the actual magic */ + + PRINTK_DEBUG("...done\r\n"); +} + + +static void ram_read32(u32 offset) +{ + PRINTK_DEBUG(" ram read: %08x\r\n", offset); + + read32(offset); +} + +#ifdef DEBUG_RAM_SETUP +static void sdram_dump_mchbar_registers(void) +{ + int i; + printk_debug("Dumping MCHBAR Registers\r\n"); + + for (i=0; i<0xfff; i+=4) { + if (MCHBAR32(i) == 0) + continue; + printk_debug("0x%04x: 0x%08x\r\n", i, MCHBAR32(i)); + } +} +#endif + +static int sdram_capabilities_max_supported_memory_frequency(void) +{ + u32 reg32; + + reg32 = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xe4); + reg32 &= (7 << 0); + + switch (reg32) { + case 4: return 400; + case 3: return 533; + case 2: return 667; + } + /* Newer revisions of this chipset rather support faster memory clocks, + * so if it's a reserved value, return the fastest memory clock that we + * know of and can handle + */ + return 667; +} + +/** + * @brief determine whether chipset is capable of dual channel interleaved mode + * + * @return 1 if interleaving is supported, 0 otherwise + */ +static int sdram_capabilities_interleave(void) +{ + u32 reg32; + + reg32 = pci_read_config8(PCI_DEV(0, 0x00,0), 0xe4); + reg32 >>= 25; + reg32 &= 1; + + return (!reg32); +} + +/** + * @brief determine whether chipset is capable of two memory channels + * + * @return 1 if dual channel operation is supported, 0 otherwise + */ +static int sdram_capabilities_dual_channel(void) +{ + u32 reg32; + + reg32 = pci_read_config8(PCI_DEV(0, 0x00,0), 0xe4); + reg32 >>= 24; + reg32 &= 1; + + return (!reg32); +} + +static int sdram_capabilities_enhanced_addressing_xor(void) +{ + u8 reg8; + + reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe5); /* CAPID0 + 5 */ + reg8 &= (1 << 7); + + return (!reg8); +} + +static int sdram_capabilities_two_dimms_per_channel(void) +{ + u8 reg8; + + reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe8); /* CAPID0 + 8 */ + reg8 &= (1 << 0); + + return (reg8 != 0); +} + +static int sdram_capabilities_MEM4G_disable(void) +{ + u8 reg8; + + reg8 = pci_read_config8(PCI_DEV(0, 0x00, 0), 0xe5); + reg8 &= (1 << 0); + + return (reg8 != 0); +} + +static void sdram_detect_errors(void) +{ + u8 reg8; + + reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2); + + if (reg8 & ((1<<7)|(1<<2))) { + if (reg8 & (1<<2)) { + printk_debug("SLP S4# Assertion Width Violation.\r\n"); + + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); + } + + if (reg8 & (1<<7)) { + printk_debug("DRAM initialization was interrupted.\r\n"); + reg8 &= ~(1<<7); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); + } + + /* Set SLP_S3# Assertion Stretch Enable */ + reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4); /* GEN_PMCON_3 */ + reg8 |= (1 << 3); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8); + + printk_debug("Reset required.\r\n"); + outb(0x00, 0xcf9); + outb(0x0e, 0xcf9); + for (;;) ; /* Wait for reset! */ + } + + /* Set DRAM initialization bit in ICH7 */ + reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2); + reg8 |= (1<<7); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); + +} + + +/** + * @brief Get generic DIMM parameters. + * @param sysinfo Central memory controller information structure + * + * This function gathers several pieces of information for each system DIMM: + * o DIMM width (x8 / x16) + * o DIMM sides (single sided / dual sided) + * + * Also, some non-supported scenarios are detected. + */ + +static void sdram_get_dram_configuration(struct sys_info *sysinfo) +{ + u32 dimm_mask = 0; + int i; + + /** + * i945 supports two DIMMs, in two configurations: + * + * - single channel with two dimms + * - dual channel with one dimm per channel + * + * In practice dual channel mainboards have their spd at 0x50, 0x52 + * whereas single channel configurations have their spd at 0x50/x51 + * + * The capability register knows a lot about the channel configuration + * but for now we stick with the information we gather from the SPD + * ROMs + */ + + if (sdram_capabilities_dual_channel()) { + sysinfo->dual_channel = 1; + printk_debug("This mainboard supports Dual Channel Operation.\n"); + } else { + sysinfo->dual_channel = 0; + printk_debug("This mainboard supports only Single Channel Operation.\n"); + } + + /** + * Since we only support two DIMMs in total, there is a limited number + * of combinations. This function returns the type of DIMMs. + * return value: + * [0:7] lower DIMM population + * [8-15] higher DIMM population + * [16] dual channel? + * + * There are 5 different possible populations for a DIMM socket: + * 1. x16 double sided (X16DS) + * 2. x8 double sided (X8DS) + * 3. x16 single sided (X16SS) + * 4. x8 double stacked (X8DDS) + * 5. not populated (NC) + * + * For the return value we start counting at zero. + * + */ + + for (i=0; i<(2 * DIMM_SOCKETS); i++) { + u8 reg8, device = DIMM_SPD_BASE + i; + + /* Initialize the socket information with a sane value */ + sysinfo->dimm[i] = SYSINFO_DIMM_NOT_POPULATED; + + if (!sdram_capabilities_dual_channel() && (i >> 1)) + continue; + if (!sdram_capabilities_two_dimms_per_channel() && (i& 1)) + continue; + + printk_debug("DDR II Channel %d Socket %d: ", (i >> 1), (i & 1)); + + if (spd_read_byte(device, SPD_MEMORY_TYPE) != SPD_MEMORY_TYPE_SDRAM_DDR2) { + printk_debug("N/A\n"); + continue; + } + + reg8 = spd_read_byte(device, SPD_DIMM_CONFIG_TYPE); + if (reg8 == ERROR_SCHEME_ECC) + die("Error: ECC memory not supported by this chipset\r\n"); + + reg8 = spd_read_byte(device, SPD_MODULE_ATTRIBUTES); + if (reg8 & MODULE_BUFFERED) + die("Error: Buffered memory not supported by this chipset\r\n"); + if (reg8 & MODULE_REGISTERED) + die("Error: Registered memory not supported by this chipset\r\n"); + + switch (spd_read_byte(device, SPD_PRIMARY_SDRAM_WIDTH)) { + case 0x08: + switch (spd_read_byte(device, SPD_NUM_DIMM_BANKS) & 0x0f) { + case 1: + printk_debug("x8DDS\r\n"); + sysinfo->dimm[i] = SYSINFO_DIMM_X8DDS; + break; + case 0: + printk_debug("x8DS\r\n"); + sysinfo->dimm[i] = SYSINFO_DIMM_X8DS; + break; + default: + printk_debug ("Unsupported.\r\n"); + } + break; + case 0x10: + switch (spd_read_byte(device, SPD_NUM_DIMM_BANKS) & 0x0f) { + case 1: + printk_debug("x16DS\r\n"); + sysinfo->dimm[i] = SYSINFO_DIMM_X16DS; + break; + case 0: + printk_debug("x16SS\r\n"); + sysinfo->dimm[i] = SYSINFO_DIMM_X16SS; + break; + default: + printk_debug ("Unsupported.\r\n"); + } + break; + default: + die("Unsupported DDR-II memory width.\r\n"); + } + + dimm_mask |= (1 << i); + } + + if (!dimm_mask) { + die("No memory installed.\r\n"); + } + + /* The chipset might be able to do this. What the heck, legacy bios + * just beeps when a single DIMM is in the Channel 1 socket. So let's + * not bother until someone needs this enough to cope with it. + */ + if (!(dimm_mask & ((1 << DIMM_SOCKETS) - 1))) { + printk_err("Channel 0 has no memory populated. This setup is not usable. Please move the DIMM.\r\n"); + } +} + +/** + * @brief determine if any DIMMs are stacked + * + * @param sysinfo central sysinfo data structure. + */ +static void sdram_verify_package_type(struct sys_info * sysinfo) +{ + int i; + + /* Assume no stacked DIMMs are available until we find one */ + sysinfo->package = 0; + for (i=0; i<2*DIMM_SOCKETS; i++) { + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + /* Is the current DIMM a stacked DIMM? */ + if (spd_read_byte(DIMM_SPD_BASE + i, SPD_NUM_DIMM_BANKS) & (1 << 4)) + sysinfo->package = 1; + } +} + +static u8 sdram_possible_cas_latencies(struct sys_info * sysinfo) +{ + int i; + u8 cas_mask; + + /* Setup CAS mask with all supported CAS Latencies */ + cas_mask = SPD_CAS_LATENCY_DDR2_3 | + SPD_CAS_LATENCY_DDR2_4 | + SPD_CAS_LATENCY_DDR2_5; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + if (sysinfo->dimm[i] != SYSINFO_DIMM_NOT_POPULATED) + cas_mask &= spd_read_byte(DIMM_SPD_BASE + i, SPD_ACCEPTABLE_CAS_LATENCIES); + } + + if(!cas_mask) { + die("No DDR-II modules with accepted CAS latencies found.\n"); + } + + return cas_mask; +} + +static void sdram_detect_cas_latency_and_ram_speed(struct sys_info * sysinfo, u8 cas_mask) +{ + int i, j, idx; + int lowest_common_cas = 0; + int max_ram_speed; + + const u8 ddr2_speeds_table[] = { + 0x50, 0x60, /* DDR2 400: tCLK = 5.0ns tAC = 0.6ns */ + 0x3d, 0x50, /* DDR2 533: tCLK = 3.75ns tAC = 0.5ns */ + 0x30, 0x45, /* DDR2 667: tCLK = 3.0ns tAC = 0.45ns */ + }; + + const u8 spd_lookup_table[] = { + SPD_MIN_CYCLE_TIME_AT_CAS_MAX, SPD_ACCESS_TIME_FROM_CLOCK, + SPD_SDRAM_CYCLE_TIME_2ND, SPD_ACCESS_TIME_FROM_CLOCK_2ND, + SPD_SDRAM_CYCLE_TIME_3RD, SPD_ACCESS_TIME_FROM_CLOCK_3RD + }; + + switch (sdram_capabilities_max_supported_memory_frequency()) { + case 400: max_ram_speed = 0; break; + case 533: max_ram_speed = 1; break; + case 667: max_ram_speed = 2; break; + } + + sysinfo->memory_frequency = 0; + sysinfo->cas = 0; + + if (cas_mask & SPD_CAS_LATENCY_DDR2_3) { + lowest_common_cas = 3; + } else if (cas_mask & SPD_CAS_LATENCY_DDR2_4) { + lowest_common_cas = 4; + } else if (cas_mask & SPD_CAS_LATENCY_DDR2_5) { + lowest_common_cas = 5; + } + PRINTK_DEBUG("lowest common cas = %d\n", lowest_common_cas); + + for (j = max_ram_speed; j>=0; j--) { + int freq_cas_mask = cas_mask; + + PRINTK_DEBUG("Probing Speed %d\n", j); + for (i=0; i<2*DIMM_SOCKETS; i++) { + int current_cas_mask; + + PRINTK_DEBUG(" DIMM: %d\n", i); + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) { + continue; + } + + current_cas_mask = spd_read_byte(DIMM_SPD_BASE + i, SPD_ACCEPTABLE_CAS_LATENCIES); + + while (current_cas_mask) { + int highest_supported_cas = 0, current_cas = 0; + PRINTK_DEBUG(" Current CAS mask: %04x; ", current_cas_mask); + if (current_cas_mask & SPD_CAS_LATENCY_DDR2_5) { + highest_supported_cas = 5; + } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_4) { + highest_supported_cas = 4; + } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_3) { + highest_supported_cas = 3; + } + if (current_cas_mask & SPD_CAS_LATENCY_DDR2_3) { + current_cas = 3; + } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_4) { + current_cas = 4; + } else if (current_cas_mask & SPD_CAS_LATENCY_DDR2_5) { + current_cas = 5; + } + + idx = highest_supported_cas - current_cas; + PRINTK_DEBUG("idx=%d, ", idx); + PRINTK_DEBUG("tCLK=%x, ", spd_read_byte(DIMM_SPD_BASE + i, spd_lookup_table[2*idx])); + PRINTK_DEBUG("tAC=%x", spd_read_byte(DIMM_SPD_BASE + i, spd_lookup_table[(2*idx)+1])); + + if (spd_read_byte(DIMM_SPD_BASE + i, spd_lookup_table[2*idx]) <= ddr2_speeds_table[2*j] && + spd_read_byte(DIMM_SPD_BASE + i, spd_lookup_table[(2*idx)+1]) <= ddr2_speeds_table[(2*j)+1]) { + PRINTK_DEBUG(": OK\n"); + break; + } + + PRINTK_DEBUG(": Not fast enough!\n"); + + current_cas_mask &= ~(1 << (current_cas)); + } + + freq_cas_mask &= current_cas_mask; + if (!current_cas_mask) { + PRINTK_DEBUG(" No valid CAS for this speed on DIMM %d\n", i); + break; + } + } + PRINTK_DEBUG(" freq_cas_mask for speed %d: %04x\n", j, freq_cas_mask); + if (freq_cas_mask) { + switch (j) { + case 0: sysinfo->memory_frequency = 400; break; + case 1: sysinfo->memory_frequency = 533; break; + case 2: sysinfo->memory_frequency = 667; break; + } + if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_3) { + sysinfo->cas = 3; + } else if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_4) { + sysinfo->cas = 4; + } else if (freq_cas_mask & SPD_CAS_LATENCY_DDR2_5) { + sysinfo->cas = 5; + } + break; + } + } + + if (sysinfo->memory_frequency && sysinfo->cas) { + printk_debug("Memory will be driven at %dMHz with CAS=%d clocks\n", + sysinfo->memory_frequency, sysinfo->cas); + } else { + die("Could not find common memory frequency and CAS\n"); + } +} + +static void sdram_detect_smallest_tRAS(struct sys_info * sysinfo) +{ + int i; + int tRAS_time; + int tRAS_cycles; + int freq_multiplier = 0; + + switch (sysinfo->memory_frequency) { + case 400: freq_multiplier = 0x14; break; /* 5ns */ + case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ + case 667: freq_multiplier = 0x0c; break; /* 3ns */ + } + + tRAS_cycles = 4; /* 4 clocks minimum */ + tRAS_time = tRAS_cycles * freq_multiplier; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + u8 reg8; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + reg8 = spd_read_byte(DIMM_SPD_BASE + i, SPD_MIN_ACTIVE_TO_PRECHARGE_DELAY); + if (!reg8) { + die("Invalid tRAS value.\n"); + } + + while ((tRAS_time >> 2) < reg8) { + tRAS_time += freq_multiplier; + tRAS_cycles++; + } + } + if(tRAS_cycles > 0x18) { + die("DDR-II Module does not support this frequency (tRAS error)\n"); + } + + printk_debug("tRAS = %d cycles\n", tRAS_cycles); + sysinfo->tras = tRAS_cycles; +} + +static void sdram_detect_smallest_tRP(struct sys_info * sysinfo) +{ + int i; + int tRP_time; + int tRP_cycles; + int freq_multiplier = 0; + + switch (sysinfo->memory_frequency) { + case 400: freq_multiplier = 0x14; break; /* 5ns */ + case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ + case 667: freq_multiplier = 0x0c; break; /* 3ns */ + } + + tRP_cycles = 2; /* 2 clocks minimum */ + tRP_time = tRP_cycles * freq_multiplier; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + u8 reg8; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + reg8 = spd_read_byte(DIMM_SPD_BASE + i, SPD_MIN_ROW_PRECHARGE_TIME); + if (!reg8) { + die("Invalid tRP value.\n"); + } + + while (tRP_time < reg8) { + tRP_time += freq_multiplier; + tRP_cycles++; + } + } + + if(tRP_cycles > 6) { + die("DDR-II Module does not support this frequency (tRP error)\n"); + } + + printk_debug("tRP = %d cycles\n", tRP_cycles); + sysinfo->trp = tRP_cycles; +} + +static void sdram_detect_smallest_tRCD(struct sys_info * sysinfo) +{ + int i; + int tRCD_time; + int tRCD_cycles; + int freq_multiplier = 0; + + switch (sysinfo->memory_frequency) { + case 400: freq_multiplier = 0x14; break; /* 5ns */ + case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ + case 667: freq_multiplier = 0x0c; break; /* 3ns */ + } + + tRCD_cycles = 2; + tRCD_time = tRCD_cycles * freq_multiplier; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + u8 reg8; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + reg8 = spd_read_byte(DIMM_SPD_BASE + i, SPD_MIN_RAS_TO_CAS_DELAY); + if (!reg8) { + die("Invalid tRCD value.\n"); + } + + while (tRCD_time < reg8) { + tRCD_time += freq_multiplier; + tRCD_cycles++; + } + } + if(tRCD_cycles > 6) { + die("DDR-II Module does not support this frequency (tRCD error)\n"); + } + + printk_debug("tRCD = %d cycles\n", tRCD_cycles); + sysinfo->trcd = tRCD_cycles; +} + +static void sdram_detect_smallest_tWR(struct sys_info * sysinfo) +{ + int i; + int tWR_time; + int tWR_cycles; + int freq_multiplier = 0; + + switch (sysinfo->memory_frequency) { + case 400: freq_multiplier = 0x14; break; /* 5ns */ + case 533: freq_multiplier = 0x0f; break; /* 3.75ns */ + case 667: freq_multiplier = 0x0c; break; /* 3ns */ + } + + tWR_cycles = 2; /* 2 clocks minimum */ + tWR_time = tWR_cycles * freq_multiplier; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + u8 reg8; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + reg8 = spd_read_byte(DIMM_SPD_BASE + i, SPD_WRITE_RECOVERY_TIME); + if (!reg8) { + die("Invalid tWR value.\n"); + } + + while (tWR_time < reg8) { + tWR_time += freq_multiplier; + tWR_cycles++; + } + } + if(tWR_cycles > 5) { + die("DDR-II Module does not support this frequency (tWR error)\n"); + } + + printk_debug("tWR = %d cycles\n", tWR_cycles); + sysinfo->twr = tWR_cycles; +} + +static void sdram_detect_smallest_tRFC(struct sys_info * sysinfo) +{ + int i, index = 0; + + const u8 tRFC_cycles[] = { + /* 75 105 127.5 */ + 15, 21, 26, /* DDR2-400 */ + 20, 28, 34, /* DDR2-533 */ + 25, 35, 43 /* DDR2-667 */ + }; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + u8 reg8; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + reg8 = sysinfo->banksize[i*2]; + switch (reg8) { + case 0x04: reg8 = 0; break; + case 0x08: reg8 = 1; break; + case 0x10: reg8 = 2; break; + case 0x20: reg8 = 3; break; + } + + if (sysinfo->dimm[i] == SYSINFO_DIMM_X16DS || sysinfo->dimm[i] == SYSINFO_DIMM_X16SS) + reg8++; + + if (reg8 > 3) { + /* Can this happen? Go back to 127.5ns just to be sure + * we don't run out of the array. This may be wrong + */ + printk_debug("DIMM %d is 1Gb x16.. Please report.\n", i); + reg8 = 3; + } + + if (reg8 > index) + index = reg8; + + } + index--; + switch (sysinfo->memory_frequency) { + case 667: index += 3; + case 533: index += 3; + case 400: break; + } + + sysinfo->trfc = tRFC_cycles[index]; + printk_debug("tRFC = %d cycles\n", tRFC_cycles[index]); +} + + +static void sdram_detect_smallest_refresh(struct sys_info * sysinfo) +{ + int i; + + sysinfo->refresh = 0; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + int refresh; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + refresh = spd_read_byte(DIMM_SPD_BASE + i, SPD_REFRESH) & ~(1 << 7); + + /* 15.6us */ + if (!refresh) + continue; + + /* Refresh is slower than 15.6us, use 15.6us */ + if (refresh > 2) + continue; + + if (refresh == 2) { + sysinfo->refresh = 1; + break; + } + + die("DDR-II module has unsupported refresh value\n"); + } + printk_debug("Refresh: %s\n", sysinfo->refresh?"7.8us":"15.6us"); +} + +static void sdram_verify_burst_length(struct sys_info * sysinfo) +{ + int i; + + for (i=0; i<2*DIMM_SOCKETS; i++) { + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + if (!(spd_read_byte(DIMM_SPD_BASE + i, SPD_SUPPORTED_BURST_LENGTHS) & SPD_BURST_LENGTH_8)) + die("Only DDR-II RAM with burst length 8 is supported by this chipset.\n"); + } +} + +static void sdram_program_dram_width(struct sys_info * sysinfo) +{ + u16 c0dramw=0, c1dramw=0; + int idx; + + if (sysinfo->dual_channel) + idx = 2; + else + idx = 1; + + switch (sysinfo->dimm[0]) { + case 0: c0dramw = 0x0000; break; /* x16DS */ + case 1: c0dramw = 0x0001; break; /* x8DS */ + case 2: c0dramw = 0x0000; break; /* x16SS */ + case 3: c0dramw = 0x0005; break; /* x8DDS */ + case 4: c0dramw = 0x0000; break; /* NC */ + } + + switch (sysinfo->dimm[idx]) { + case 0: c1dramw = 0x0000; break; /* x16DS */ + case 1: c1dramw = 0x0010; break; /* x8DS */ + case 2: c1dramw = 0x0000; break; /* x16SS */ + case 3: c1dramw = 0x0050; break; /* x8DDS */ + case 4: c1dramw = 0x0000; break; /* NC */ + } + + if ( !sdram_capabilities_dual_channel() ) { + /* Single Channel */ + c0dramw |= c1dramw; + c1dramw = 0; + } + + MCHBAR16(C0DRAMW) = c0dramw; + MCHBAR16(C1DRAMW) = c1dramw; +} + +static void sdram_write_slew_rates(u32 offset, const u32 *slew_rate_table) +{ + int i; + + for (i=0; i<16; i++) + MCHBAR32(offset+(i*4)) = slew_rate_table[i]; +} + +static void sdram_rcomp_buffer_strength_and_slew(struct sys_info *sysinfo) +{ + static const u32 dq2030[] = { + 0x08070706, 0x0a090908, 0x0d0c0b0a, 0x12100f0e, + 0x1a181614, 0x22201e1c, 0x2a282624, 0x3934302d, + 0x0a090908, 0x0c0b0b0a, 0x0e0d0d0c, 0x1211100f, + 0x19171513, 0x211f1d1b, 0x2d292623, 0x3f393531 + }; + + static const u32 dq2330[] = { + 0x08070706, 0x0a090908, 0x0d0c0b0a, 0x12100f0e, + 0x1a181614, 0x22201e1c, 0x2a282624, 0x3934302d, + 0x0a090908, 0x0c0b0b0a, 0x0e0d0d0c, 0x1211100f, + 0x19171513, 0x211f1d1b, 0x2d292623, 0x3f393531 + }; + + static const u32 cmd2710[] = { + 0x07060605, 0x0f0d0b09, 0x19171411, 0x1f1f1d1b, + 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, + + 0x1110100f, 0x0f0d0b09, 0x19171411, 0x1f1f1d1b, + 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f + }; + + static const u32 cmd3210[] = { + 0x0f0d0b0a, 0x17151311, 0x1f1d1b19, 0x1f1f1f1f, + 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, + 0x18171615, 0x1f1f1c1a, 0x1f1f1f1f, 0x1f1f1f1f, + 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f, 0x1f1f1f1f + }; + + static const u32 clk2030[] = { + 0x0e0d0d0c, 0x100f0f0e, 0x100f0e0d, 0x15131211, + 0x1d1b1917, 0x2523211f, 0x2a282927, 0x32302e2c, + 0x17161514, 0x1b1a1918, 0x1f1e1d1c, 0x23222120, + 0x27262524, 0x2d2b2928, 0x3533312f, 0x3d3b3937 + }; + + static const u32 ctl3215[] = { + 0x01010000, 0x03020101, 0x07060504, 0x0b0a0908, + 0x100f0e0d, 0x14131211, 0x18171615, 0x1c1b1a19, + 0x05040403, 0x07060605, 0x0a090807, 0x0f0d0c0b, + 0x14131211, 0x18171615, 0x1c1b1a19, 0x201f1e1d + }; + + static const u32 ctl3220[] = { + 0x05040403, 0x07060505, 0x0e0c0a08, 0x1a171411, + 0x2825221f, 0x35322f2b, 0x3e3e3b38, 0x3e3e3e3e, + 0x09080807, 0x0b0a0a09, 0x0f0d0c0b, 0x1b171311, + 0x2825221f, 0x35322f2b, 0x3e3e3b38, 0x3e3e3e3e + }; + + static const u32 nc[] = { + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000 + }; + + static const u32 const * const dual_channel_slew_group_lookup[] = { + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd3210, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd2710, + dq2030, cmd3210, nc, ctl3215, nc, clk2030, nc, nc, + + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, nc, clk2030, nc, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, nc, clk2030, nc, dq2030, cmd2710, + dq2030, cmd3210, ctl3215, nc, clk2030, nc, nc, nc, + + dq2030, cmd3210, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd3210, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + dq2030, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd2710, + dq2030, cmd3210, nc, ctl3215, nc, clk2030, nc, nc, + + dq2030, cmd2710, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd2710, ctl3215, nc, clk2030, nc, dq2030, cmd3210, + dq2030, cmd2710, ctl3215, ctl3215, clk2030, clk2030, dq2030, cmd3210, + dq2030, cmd2710, ctl3215, nc, clk2030, nc, dq2030, cmd2710, + dq2030, cmd2710, ctl3215, nc, clk2030, nc, nc, nc, + + nc, nc, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + nc, nc, ctl3215, nc, clk2030, nc, dq2030, cmd3210, + nc, nc, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + nc, nc, ctl3215, nc, clk2030, clk2030, dq2030, cmd2710 + }; + + static const u32 const * const single_channel_slew_group_lookup[] = { + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, nc, ctl3215, nc, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, nc, ctl3215, nc, clk2030, nc, nc, + + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, nc, nc, + + dq2330, cmd3210, nc, ctl3215, nc, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, nc, ctl3215, nc, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, nc, ctl3215, nc, clk2030, nc, nc, + + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, ctl3215, clk2030, clk2030, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, dq2330, cmd3210, + dq2330, cmd3210, ctl3215, nc, clk2030, nc, nc, nc, + + dq2330, nc, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + dq2330, nc, ctl3215, nc, clk2030, nc, dq2030, cmd3210, + dq2330, nc, nc, ctl3215, nc, clk2030, dq2030, cmd3210, + dq2330, nc, ctl3215, nc, clk2030, clk2030, dq2030, cmd3210 + }; + + + /* Strength multiplier tables */ + static const u8 dual_channel_strength_multiplier[] = { + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x22, + 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x44, 0x22, + 0x44, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, + 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, + 0x44, 0x11, 0x11, 0x11, 0x44, 0x44, 0x44, 0x22, + 0x44, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, + 0x44, 0x22, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, + 0x44, 0x22, 0x11, 0x11, 0x44, 0x44, 0x44, 0x11, + 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x44, 0x22, + 0x44, 0x22, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, + 0x00, 0x00, 0x11, 0x00, 0x44, 0x00, 0x44, 0x11, + 0x00, 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x11, + 0x00, 0x00, 0x11, 0x00, 0x44, 0x44, 0x44, 0x22 + }; + + static const u8 single_channel_strength_multiplier[] = { + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, + 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x00, 0x11, 0x00, 0x44, 0x00, 0x00, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x11, 0x44, 0x44, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, + 0x33, 0x11, 0x11, 0x00, 0x44, 0x00, 0x00, 0x00, + 0x33, 0x00, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, + 0x33, 0x00, 0x11, 0x00, 0x44, 0x00, 0x33, 0x11, + 0x33, 0x00, 0x00, 0x11, 0x00, 0x44, 0x33, 0x11, + 0x33, 0x00, 0x11, 0x00, 0x44, 0x44, 0x33, 0x11 + }; + + const u8 * strength_multiplier; + const u32* const * slew_group_lookup; + int idx; + + /* Set Strength Multipliers */ + + /* Dual Channel needs different tables. */ + if (sdram_capabilities_dual_channel()) { + printk_debug("Programming Dual Channel RCOMP\r\n"); + strength_multiplier = dual_channel_strength_multiplier; + slew_group_lookup = dual_channel_slew_group_lookup; + idx = 5 * sysinfo->dimm[0] + sysinfo->dimm[2]; + } else { + printk_debug("Programming Single Channel RCOMP\r\n"); + strength_multiplier = single_channel_strength_multiplier; + slew_group_lookup = single_channel_slew_group_lookup; + idx = 5 * sysinfo->dimm[0] + sysinfo->dimm[1]; + } + + printk_debug("Table Index: %d\r\n", idx); + + MCHBAR8(G1SC) = strength_multiplier[idx * 8 + 0]; + MCHBAR8(G2SC) = strength_multiplier[idx * 8 + 1]; + MCHBAR8(G3SC) = strength_multiplier[idx * 8 + 2]; + MCHBAR8(G4SC) = strength_multiplier[idx * 8 + 3]; + MCHBAR8(G5SC) = strength_multiplier[idx * 8 + 4]; + MCHBAR8(G6SC) = strength_multiplier[idx * 8 + 5]; + MCHBAR8(G7SC) = strength_multiplier[idx * 8 + 6]; + MCHBAR8(G8SC) = strength_multiplier[idx * 8 + 7]; + + /* Channel 0 */ + sdram_write_slew_rates(G1SRPUT, slew_group_lookup[idx * 8 + 0]); + sdram_write_slew_rates(G2SRPUT, slew_group_lookup[idx * 8 + 1]); + if ((slew_group_lookup[idx * 8 + 2] != nc) && (sysinfo->package == SYSINFO_PACKAGE_STACKED)) { + + + sdram_write_slew_rates(G3SRPUT, ctl3220); + } else { + sdram_write_slew_rates(G3SRPUT, slew_group_lookup[idx * 8 + 2]); + } + sdram_write_slew_rates(G4SRPUT, slew_group_lookup[idx * 8 + 3]); + sdram_write_slew_rates(G5SRPUT, slew_group_lookup[idx * 8 + 4]); + sdram_write_slew_rates(G6SRPUT, slew_group_lookup[idx * 8 + 5]); + + /* Channel 1 */ + if (sysinfo->dual_channel) { + sdram_write_slew_rates(G7SRPUT, slew_group_lookup[idx * 8 + 6]); + sdram_write_slew_rates(G8SRPUT, slew_group_lookup[idx * 8 + 7]); + } else { + sdram_write_slew_rates(G7SRPUT, nc); + sdram_write_slew_rates(G8SRPUT, nc); + } +} + +static void sdram_enable_rcomp(void) +{ + u32 reg32; + + udelay(300); + reg32 = MCHBAR32(GBRCOMPCTL); + reg32 &= ~(1 << 23); + MCHBAR32(GBRCOMPCTL) = reg32; +} + +static void sdram_program_dll_timings(struct sys_info *sysinfo) +{ + u32 chan0dll = 0, chan1dll = 0; + int i; + + printk_debug ("Programming DLL Timings... \r\n"); + + MCHBAR16(DQSMT) &= ~( (3 << 12) | (1 << 10) | ( 0xf << 0) ); + MCHBAR16(DQSMT) |= (1 << 13) | (0xc << 0); + + /* We drive both channels with the same speed */ + switch (sysinfo->memory_frequency) { + case 400: chan0dll = 0x26262626; chan1dll=0x26262626; break; /* 400MHz */ + case 533: chan0dll = 0x22222222; chan1dll=0x22222222; break; /* 533MHz */ + case 667: chan0dll = 0x11111111; chan1dll=0x11111111; break; /* 667MHz */ + } + + for (i=0; i < 4; i++) { + MCHBAR32(C0R0B00DQST + (i * 0x10) + 0) = chan0dll; + MCHBAR32(C0R0B00DQST + (i * 0x10) + 4) = chan0dll; + MCHBAR32(C1R0B00DQST + (i * 0x10) + 0) = chan1dll; + MCHBAR32(C1R0B00DQST + (i * 0x10) + 4) = chan1dll; + } +} + +static void sdram_force_rcomp(void) +{ + u32 reg32; + u8 reg8; + + reg32 = MCHBAR32(ODTC); + reg32 |= (1 << 28); + MCHBAR32(ODTC) = reg32; + + reg32 = MCHBAR32(SMSRCTL); + reg32 |= (1 << 0); + MCHBAR32(SMSRCTL) = reg32; + + reg32 = MCHBAR32(GBRCOMPCTL); + reg32 |= (1 << 8); + MCHBAR32(GBRCOMPCTL) = reg32; + + reg8 = i945_silicon_revision(); + if ((reg8 == 0 && (MCHBAR32(DCC) & (3 << 0)) == 0) || (reg8 == 1)) { + reg32 = MCHBAR32(GBRCOMPCTL); + reg32 |= (3 << 5); + MCHBAR32(GBRCOMPCTL) = reg32; + } +} + +static void sdram_initialize_system_memory_io(struct sys_info *sysinfo) +{ + u8 reg8; + u32 reg32; + + printk_debug ("Initializing System Memory IO... \r\n"); + + reg8 = MCHBAR8(C0HCTC); + reg8 &= ~0x1f; + reg8 |= ( 1 << 0); + MCHBAR8(C0HCTC) = reg8; + + reg8 = MCHBAR8(C1HCTC); + reg8 &= ~0x1f; + reg8 |= ( 1 << 0); + MCHBAR8(C1HCTC) = reg8; + + + MCHBAR16(WDLLBYPMODE) &= ~( (1 << 9) | (1 << 6) | (1 << 4) | (1 << 3) | (1 << 1) ); + MCHBAR16(WDLLBYPMODE) |= (1 << 8) | (1 << 7) | (1 << 5) | (1 << 2) | (1 << 0); + + MCHBAR8(C0WDLLCMC) = 0; + MCHBAR8(C1WDLLCMC) = 0; + + sdram_program_dram_width(sysinfo); + + sdram_rcomp_buffer_strength_and_slew(sysinfo); + + reg32 = MCHBAR32(GBRCOMPCTL); + reg32 &= ~( (1 << 29) | (1 << 26) | (3 << 21) | (3 << 2) ); + reg32 |= (3 << 27) | (3 << 0); + MCHBAR32(GBRCOMPCTL) = reg32; + + MCHBAR32(GBRCOMPCTL) |= (1 << 10); + + sdram_program_dll_timings(sysinfo); + + sdram_force_rcomp(); +} + +static void sdram_enable_system_memory_io(struct sys_info *sysinfo) +{ + u32 reg32; + + printk_debug ("Enabling System Memory IO... \r\n"); + + reg32 = MCHBAR32(RCVENMT); + reg32 &= ~(0x3f << 6); + MCHBAR32(RCVENMT) = reg32; + + reg32 |= (1 << 11) | (1 << 9); + MCHBAR32(RCVENMT) = reg32; + + reg32 = MCHBAR32(DRTST); + reg32 |= (1 << 3) | (1 << 2); + MCHBAR32(DRTST) = reg32; + + reg32 = MCHBAR32(DRTST); + reg32 |= (1 << 6) | (1 << 4); + MCHBAR32(DRTST) = reg32; + + asm volatile ("nop; nop;"); + + reg32 = MCHBAR32(DRTST); + + /* Is channel 0 populated? */ + if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) + reg32 |= (1 << 7) | (1 << 5); + else + reg32 |= (1 << 31); + + /* Is channel 1 populated? */ + if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) + reg32 |= (1 << 9) | (1 << 8); + else + reg32 |= (1 << 30); + + MCHBAR32(DRTST) = reg32; + + if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) { + reg32 = MCHBAR32(C0DRC1); + reg32 |= (1 << 8); + MCHBAR32(C0DRC1) = reg32; + } + if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) { + reg32 = MCHBAR32(C1DRC1); + reg32 |= (1 << 8); + MCHBAR32(C1DRC1) = reg32; + } +} + +struct dimm_size { + unsigned long side1; + unsigned long side2; +}; + +static struct dimm_size sdram_get_dimm_size(u16 device) +{ + /* Calculate the log base 2 size of a DIMM in bits */ + struct dimm_size sz; + int value, low, rows, columns; + + sz.side1 = 0; + sz.side2 = 0; + + rows = spd_read_byte(device, SPD_NUM_ROWS); /* rows */ + if (rows < 0) goto hw_err; + if ((rows & 0xf) == 0) goto val_err; + sz.side1 += rows & 0xf; + + columns = spd_read_byte(device, SPD_NUM_COLUMNS); /* columns */ + if (columns < 0) goto hw_err; + if ((columns & 0xf) == 0) goto val_err; + sz.side1 += columns & 0xf; + + value = spd_read_byte(device, SPD_NUM_BANKS_PER_SDRAM); /* banks */ + if (value < 0) goto hw_err; + if ((value & 0xff) == 0) goto val_err; + sz.side1 += log2(value & 0xff); + + /* Get the module data width and convert it to a power of two */ + value = spd_read_byte(device, SPD_MODULE_DATA_WIDTH_MSB); /* (high byte) */ + if (value < 0) goto hw_err; + value &= 0xff; + value <<= 8; + + low = spd_read_byte(device, SPD_MODULE_DATA_WIDTH_LSB); /* (low byte) */ + if (low < 0) goto hw_err; + value = value | (low & 0xff); + if ((value != 72) && (value != 64)) goto val_err; + sz.side1 += log2(value); + + /* side 2 */ + value = spd_read_byte(device, SPD_NUM_DIMM_BANKS); /* number of physical banks */ + + if (value < 0) goto hw_err; + value &= 7; + value++; + if (value == 1) goto out; + if (value != 2) goto val_err; + + /* Start with the symmetrical case */ + sz.side2 = sz.side1; + + if ((rows & 0xf0) == 0) goto out; /* If symmetrical we are done */ + + /* Don't die here, I have not come across any of these to test what + * actually happens. + */ + printk_err("Assymetric DIMMs are not supported by this chipset\n"); + + sz.side2 -= (rows & 0x0f); /* Subtract out rows on side 1 */ + sz.side2 += ((rows >> 4) & 0x0f); /* Add in rows on side 2 */ + + sz.side2 -= (columns & 0x0f); /* Subtract out columns on side 1 */ + sz.side2 += ((columns >> 4) & 0x0f); /* Add in columns on side 2 */ + + goto out; + + val_err: + die("Bad SPD value\r\n"); + hw_err: + /* If a hardware error occurs the spd rom probably does not exist. + * In this case report that there is no memory + */ + sz.side1 = 0; + sz.side2 = 0; + out: + return sz; +} + +static void sdram_detect_dimm_size(struct sys_info * sysinfo) +{ + int i; + + for(i = 0; i < 2 * DIMM_SOCKETS; i++) { + struct dimm_size sz; + + sysinfo->banksize[i * 2] = 0; + sysinfo->banksize[(i * 2) + 1] = 0; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + sz = sdram_get_dimm_size(DIMM_SPD_BASE + i); + + sysinfo->banks[i] = spd_read_byte(DIMM_SPD_BASE + i, SPD_NUM_BANKS_PER_SDRAM); /* banks */ + + if (sz.side1 < 30) + die("DDR-II rank size smaller than 128MB is not supported.\n"); + + sysinfo->banksize[i * 2] = sz.side1 - 30; + + printk_debug("DIMM %d side 0 = %d MB\n", i, (1 << sysinfo->banksize[i * 2]) * 128 ); + + if (!sz.side2) + continue; + + /* If there is a second side, it has to have at least 128M, too */ + if (sz.side2 < 30) + die("DDR-II rank size smaller than 128MB is not supported.\n"); + + sysinfo->banksize[(i * 2) + 1] = sz.side2 - 30; + + printk_debug("DIMM %d side 1 = %d MB\n", i, (1 << sysinfo->banksize[(i * 2) + 1]) * 128); + } +} + +static int sdram_program_row_boundaries(struct sys_info *sysinfo) +{ + int i; + int cum0, cum1, tolud; + + printk_debug ("Setting RAM size... \r\n"); + + cum0 = 0; + for(i = 0; i < 2 * DIMM_SOCKETS; i++) { + cum0 += (sysinfo->banksize[i] << 3); + MCHBAR8(C0DRB0+i) = cum0; + } + + /* Assume we continue in Channel 1 where we stopped in Channel 0 */ + cum1 = cum0; + + /* Exception: Interleaved starts from the beginning */ + if (sysinfo->interleaved) + cum1 = 0; + + /* Exception: Channel 1 is not populated. C1DRB stays zero */ + if (sysinfo->dimm[2] == SYSINFO_DIMM_NOT_POPULATED && + sysinfo->dimm[3] == SYSINFO_DIMM_NOT_POPULATED) + cum1 = 0; + + for(i = 0; i < 2 * DIMM_SOCKETS; i++) { + cum1 += (sysinfo->banksize[i + 4] << 3); + MCHBAR8(C1DRB0+i) = cum1; + } + + /* Set TOLUD Top Of Low Usable DRAM */ + if (sysinfo->interleaved) + tolud = (cum0 + cum1) << 1; + else + tolud = (cum1 ? cum1 : cum0) << 1; + pci_write_config16(PCI_DEV(0,0,0), TOLUD, tolud); + + printk_debug("C0DRB = 0x%08x\r\n", MCHBAR32(C0DRB0)); + printk_debug("C1DRB = 0x%08x\r\n", MCHBAR32(C1DRB0)); + printk_debug("TOLUD = 0x%04x\r\n", tolud); + + pci_write_config16(PCI_DEV(0,0,0), TOM, tolud>>3); + + return 0; +} + + +static int sdram_set_row_attributes(struct sys_info *sysinfo) +{ + int i, value; + u16 dra0=0, dra1=0, dra = 0; + + printk_debug ("Setting row attributes... \r\n"); + for(i=0; i < 2 * DIMM_SOCKETS; i++) { + u16 device; + u8 columnsrows; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) { + continue; + } + + device = DIMM_SPD_BASE + i; + columnsrows = 0; + + value = spd_read_byte(device, SPD_NUM_ROWS); /* rows */ + columnsrows = (value & 0x0f); + + value = spd_read_byte(device, SPD_NUM_COLUMNS); /* columns */ + columnsrows |= (value & 0xf) << 4; + + switch (columnsrows) { + case 0x9d: dra = 2; break; + case 0xad: dra = 3; break; + case 0xbd: dra = 4; break; + case 0xae: dra = 3; break; + case 0xbe: dra = 4; break; + default: die("Unsupported Rows/Columns. (DRA)"); + } + + /* Double Sided DIMMs? */ + if (sysinfo->banksize[(2 * i) + 1] != 0) { + dra = (dra << 4) | dra; + } + + if (i < DIMM_SOCKETS) + dra0 |= (dra << (i*8)); + else + dra1 |= (dra << ((i - DIMM_SOCKETS)*8)); + } + + MCHBAR16(C0DRA0) = dra0; + MCHBAR16(C1DRA0) = dra1; + + printk_debug("C0DRA = 0x%04x\r\n", dra0); + printk_debug("C1DRA = 0x%04x\r\n", dra1); + + return 0; +} + +static void sdram_set_bank_architecture(struct sys_info *sysinfo) +{ + u32 off32; + int i; + + MCHBAR16(C1BNKARC) &= 0xff00; + MCHBAR16(C0BNKARC) &= 0xff00; + + off32 = C0BNKARC; + for (i=0; i < 2 * DIMM_SOCKETS; i++) { + /* Switch to second channel */ + if (i == DIMM_SOCKETS) + off32 = C1BNKARC; + + if (sysinfo->dimm[i] == SYSINFO_DIMM_NOT_POPULATED) + continue; + + if (sysinfo->banks[i] != 8) + continue; + + printk_spew("DIMM%d has 8 banks.\n"); + + if (i & 1) + MCHBAR16(off32) |= 0x50; + else + MCHBAR16(off32) |= 0x05; + } +} + +#define REFRESH_7_8US 1 +#define REFRESH_15_6US 0 +static void sdram_program_refresh_rate(struct sys_info *sysinfo) +{ + u32 reg32; + + if (sysinfo->refresh == REFRESH_7_8US) { + reg32 = (2 << 8); /* Refresh enabled at 7.8us */ + } else { + reg32 = (1 << 8); /* Refresh enabled at 15.6us */ + } + + MCHBAR32(C0DRC0) &= ~(7 << 8); + MCHBAR32(C0DRC0) |= reg32; + + MCHBAR32(C1DRC0) &= ~(7 << 8); + MCHBAR32(C1DRC0) |= reg32; +} + +static void sdram_program_cke_tristate(struct sys_info *sysinfo) +{ + u32 reg32; + int i; + + reg32 = MCHBAR32(C0DRC1); + + for (i=0; i < 4; i++) { + if (sysinfo->banksize[i] == 0) { + reg32 |= (1 << (16 + i)); + } + } + + reg32 |= (1 << 12); + + reg32 |= (1 << 11); + MCHBAR32(C0DRC1) = reg32; + + /* Do we have to do this if we're in Single Channel Mode? */ + reg32 = MCHBAR32(C1DRC1); + + for (i=4; i < 8; i++) { + if (sysinfo->banksize[i] == 0) { + reg32 |= (1 << (12 + i)); + } + } + + reg32 |= (1 << 12); + + reg32 |= (1 << 11); + MCHBAR32(C1DRC1) = reg32; +} + +static void sdram_program_odt_tristate(struct sys_info *sysinfo) +{ + u32 reg32; + int i; + + reg32 = MCHBAR32(C0DRC2); + + for (i=0; i < 4; i++) { + if (sysinfo->banksize[i] == 0) { + reg32 |= (1 << (24 + i)); + } + } + MCHBAR32(C0DRC2) = reg32; + + reg32 = MCHBAR32(C1DRC2); + + for (i=4; i < 8; i++) { + if (sysinfo->banksize[i] == 0) { + reg32 |= (1 << (20 + i)); + } + } + MCHBAR32(C1DRC2) = reg32; +} + +static void sdram_set_timing_and_control(struct sys_info *sysinfo) +{ + u32 reg32, off32; + u32 tWTR; + u32 temp_drt; + int i, page_size; + + static const u8 const drt0_table[] = { + /* CL 3, 4, 5 */ + 3, 4, 5, /* FSB533/400, DDR533/400 */ + 4, 5, 6, /* FSB667, DDR533/400 */ + 4, 5, 6, /* FSB667, DDR667 */ + }; + + static const u8 const cas_table[] = { + 2, 1, 0, 3 + }; + + reg32 = MCHBAR32(C0DRC0); + reg32 |= (1 << 2); /* Burst Length 8 */ + reg32 &= ~( (1 << 13) | (1 << 12) ); + MCHBAR32(C0DRC0) = reg32; + + reg32 = MCHBAR32(C1DRC0); + reg32 |= (1 << 2); /* Burst Length 8 */ + reg32 &= ~( (1 << 13) | (1 << 12) ); + MCHBAR32(C1DRC0) = reg32; + + if (!sysinfo->dual_channel && sysinfo->dimm[1] != + SYSINFO_DIMM_NOT_POPULATED) { + reg32 = MCHBAR32(C0DRC0); + reg32 |= (1 << 15); + MCHBAR32(C0DRC0) = reg32; + } + + sdram_program_refresh_rate(sysinfo); + + sdram_program_cke_tristate(sysinfo); + + sdram_program_odt_tristate(sysinfo); + + /* Calculate DRT0 */ + + temp_drt = 0; + + /* B2B Write Precharge (same bank) = CL-1 + BL/2 + tWR */ + reg32 = (sysinfo->cas - 1) + (BURSTLENGTH / 2) + sysinfo->twr; + temp_drt |= (reg32 << 28); + + /* Write Auto Precharge (same bank) = CL-1 + BL/2 + tWR + tRP */ + reg32 += sysinfo->trp; + temp_drt |= (reg32 << 4); + + if (sysinfo->memory_frequency == 667) { + tWTR = 3; /* 667MHz */ + } else { + tWTR = 2; /* 400 and 533 */ + } + + /* B2B Write to Read Command Spacing */ + reg32 = (sysinfo->cas - 1) + (BURSTLENGTH / 2) + tWTR; + temp_drt |= (reg32 << 24); + + + temp_drt |= ( (1 << 22) | (3 << 20) | (1 << 18) | (0 << 16) ); + + /* Program Write Auto Precharge to Activate */ + off32 = 0; + if (sysinfo->fsb_frequency == 667) { /* 667MHz FSB */ + off32 += 3; + } + if (sysinfo->memory_frequency == 667) { + off32 += 3; + } + off32 += sysinfo->cas - 3; + reg32 = drt0_table[off32]; + temp_drt |= (reg32 << 11); + + /* Read Auto Precharge to Activate */ + + temp_drt |= (8 << 0); + + MCHBAR32(C0DRT0) = temp_drt; + MCHBAR32(C1DRT0) = temp_drt; + + /* Calculate DRT1 */ + + temp_drt = MCHBAR32(C0DRT1) & 0x00020088; + + /* DRAM RASB Precharge */ + temp_drt |= (sysinfo->trp - 2) << 0; + + /* DRAM RASB to CASB Delay */ + temp_drt |= (sysinfo->trcd - 2) << 4; + + /* CASB Latency */ + temp_drt |= (cas_table[sysinfo->cas - 3]) << 8; + + /* Refresh Cycle Time */ + temp_drt |= (sysinfo->trfc) << 10; + + /* Pre-All to Activate Delay */ + temp_drt |= (0 << 16); + + /* Precharge to Precharge Delay stays at 1 clock */ + temp_drt |= (0 << 18); + + /* Activate to Precharge Delay */ + temp_drt |= (sysinfo->tras << 19); + + /* Read to Precharge (tRTP) */ + if (sysinfo->memory_frequency == 667) { + temp_drt |= (1 << 28); + } else { + temp_drt |= (0 << 28); + } + + /* Determine page size */ + reg32 = 0; + page_size = 1; /* Default: 1k pagesize */ + for (i=0; i< 2*DIMM_SOCKETS; i++) { + if (sysinfo->dimm[i] == SYSINFO_DIMM_X16DS || + sysinfo->dimm[i] == SYSINFO_DIMM_X16SS) + page_size = 2; /* 2k pagesize */ + } + + if (sysinfo->memory_frequency == 533 && page_size == 2) { + reg32 = 1; + } + if (sysinfo->memory_frequency == 667) { + reg32 = page_size; + } + + temp_drt |= (reg32 << 30); + + MCHBAR32(C0DRT1) = temp_drt; + MCHBAR32(C1DRT1) = temp_drt; + + /* Program DRT2 */ + reg32 = MCHBAR32(C0DRT2); + reg32 &= ~(1 << 8); + MCHBAR32(C0DRT2) = reg32; + + reg32 = MCHBAR32(C1DRT2); + reg32 &= ~(1 << 8); + MCHBAR32(C1DRT2) = reg32; + + /* Calculate DRT3 */ + temp_drt = MCHBAR32(C0DRT3) & ~0x07ffffff; + + /* Get old tRFC value */ + reg32 = MCHBAR32(C0DRT1) >> 10; + reg32 &= 0x3f; + + /* 788nS - tRFC */ + switch (sysinfo->memory_frequency) { + case 400: /* 5nS */ + reg32 = ((78800 / 500) - reg32) & 0x1ff; + reg32 |= (0x8c << 16) | (0x0c << 10); /* 1 us */ + break; + case 533: /* 3.75nS */ + reg32 = ((78800 / 375) - reg32) & 0x1ff; + reg32 |= (0xba << 16) | (0x10 << 10); /* 1 us */ + break; + case 667: /* 3nS */ + reg32 = ((78800 / 300) - reg32) & 0x1ff; + reg32 |= (0xe9 << 16) | (0x14 << 10); /* 1 us */ + break; + } + + temp_drt |= reg32; + + MCHBAR32(C0DRT3) = temp_drt; + MCHBAR32(C1DRT3) = temp_drt; +} + +static void sdram_set_channel_mode(struct sys_info *sysinfo) +{ + u32 reg32; + + printk_debug("Setting mode of operation for memory channels..."); + + if (sdram_capabilities_interleave() && + ( ( sysinfo->banksize[0] + sysinfo->banksize[1] + + sysinfo->banksize[2] + sysinfo->banksize[3] ) == + ( sysinfo->banksize[4] + sysinfo->banksize[5] + + sysinfo->banksize[6] + sysinfo->banksize[7] ) ) ) { + /* Both channels equipped with DIMMs of the same size */ + + sysinfo->interleaved = 1; + } else { + sysinfo->interleaved = 0; + } + + reg32 = MCHBAR32(DCC); + reg32 &= ~(7 << 0); + + if(sysinfo->interleaved) { + /* Dual Channel Interleaved */ + printk_debug("Dual Channel Interleaved.\n"); + reg32 |= (1 << 1); + } else if (sysinfo->dimm[0] == SYSINFO_DIMM_NOT_POPULATED && + sysinfo->dimm[1] == SYSINFO_DIMM_NOT_POPULATED) { + /* Channel 1 only */ + printk_debug("Single Channel 1 only.\n"); + reg32 |= (1 << 2); + } else if (sdram_capabilities_dual_channel() && sysinfo->dimm[2] != + SYSINFO_DIMM_NOT_POPULATED) { + /* Dual Channel Assymetric */ + printk_debug("Dual Channel Assymetric.\n"); + reg32 |= (1 << 0); + } else { + /* All bits 0 means Single Channel 0 operation */ + printk_debug("Single Channel 0 only.\n"); + } + + reg32 |= (1 << 10); + + MCHBAR32(DCC) = reg32; + + PRINTK_DEBUG("DCC=0x%08x\r\n", MCHBAR32(DCC)); +} + +static void sdram_program_pll_settings(void) +{ + volatile u16 reg16; + volatile u32 reg32; + + const u8 HPLLGPLLPowerDown[] = { + 0x90, /* 400MHz */ + 0x95, /* 533MHz */ + 0x00, /* --- */ + 0x8d, /* 667MHz */ + }; + + MCHBAR32(PLLMON) = 0x80800000; + + reg32 = MCHBAR32(CLKCFG); + reg32 &= (7 << 0); + + reg16 = MCHBAR16(CPCTL); + reg16 &= 0xff00; + reg16 |= HPLLGPLLPowerDown[reg32]; + MCHBAR16(CPCTL) = reg16; + + reg16 &= ~(1 << 11); + MCHBAR16(CPCTL) = reg16; + + reg16 = MCHBAR16(CPCTL); +} + +static void sdram_program_graphics_frequency(struct sys_info *sysinfo) +{ + u8 reg8; + u16 reg16; + u8 freq, second_vco; + +#define CRCLK_166MHz 0x00 +#define CRCLK_200MHz 0x01 +#define CRCLK_250MHz 0x03 +#define CRCLK_400MHz 0x05 + +#define CDCLK_200MHz 0x00 +#define CDCLK_320MHz 0x40 + + printk_debug ("Setting Graphics Frequency... \r\n"); + + reg16 = pci_read_config16(PCI_DEV(0,2,0), GCFC); + reg16 |= (1<<11) | (1<<9); + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); + + /* Program CPCTL according to FSB speed */ + reg16 = MCHBAR16(CPCTL); + reg16 &= 0xff00; + + switch (MCHBAR32(CLKCFG) & 0x7) { + case 0: sysinfo->fsb_frequency = 400; break; /* FSB400 */ + case 1: sysinfo->fsb_frequency = 533; break; /* FSB533 */ + case 3: sysinfo->fsb_frequency = 667; break; /* FSB667 */ + default: die("Unsupported FSB speed"); + } + + switch (sysinfo->fsb_frequency) { + case 533: reg16 |= 0x95; break; /* FSB533 */ + case 667: reg16 |= 0x8d; break; /* FSB667 */ + } + MCHBAR16(CPCTL) = reg16; + + /* Get graphics frequency capabilities */ + reg8 = (pci_read_config8(PCI_DEV(0, 0x00,0), 0xe5) & 0x0e) >> 1; + + freq = CRCLK_250MHz; + switch (reg8) { + case 0: + if (MCHBAR32(DFT_STRAP1) & (1 << 20)) + freq = CRCLK_250MHz; + else + freq = CRCLK_400MHz; + break; + case 2: freq = CRCLK_250MHz; break; + case 3: freq = CRCLK_200MHz; break; + case 4: freq = CRCLK_166MHz; break; + } + + if (freq != CRCLK_400MHz) { + + reg8 = (pci_read_config8(PCI_DEV(0, 0x00,0), 0xe7) & 0x70) >> 4; + if (reg8==2) + freq = CRCLK_166MHz; + } + + if (i945_silicon_revision() == 0) { + sysinfo->mvco4x = 1; + } else { + sysinfo->mvco4x = 0; + } + + + second_vco = 0; + + if (MCHBAR32(DFT_STRAP1) & (1 << 20)) { + second_vco = 1; + } else if ((i945_silicon_revision() > 0) && (freq == CRCLK_250MHz)) { + u16 mem = sysinfo->memory_frequency; + u16 fsb = sysinfo->fsb_frequency; + + if ( (fsb == 667 && mem == 533) || + (fsb == 533 && mem == 533) || + (fsb == 533 && mem == 400)) { + second_vco = 1; + } + + if (fsb == 667 && mem == 533) + sysinfo->mvco4x = 1; + } + + if (second_vco) { + printk_debug("Programming second TCO\r\n"); + sysinfo->clkcfg_bit7=1; + } else { + sysinfo->clkcfg_bit7=0; + } + + reg16 = pci_read_config16(PCI_DEV(0,2,0), GCFC); + reg16 &= ~( (7 << 0) | (1 << 13) ); + reg16 |= freq; + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); + + reg16 = pci_read_config16(PCI_DEV(0,2,0), GCFC); + reg16 &= ~( (1<<7) | (7<<4) ); + if (MCHBAR32(DFT_STRAP1) & (1 << 20)) { + reg16 |= CDCLK_200MHz; + } else { + reg16 |= CDCLK_320MHz; + } + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); + + reg16 = pci_read_config16(PCI_DEV(0,2,0), GCFC); + reg16 &= ~( (1<<10) | (1<<8) ); + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); + reg16 |= (1<<10) | (1<<8); + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); + + reg16 &= 0xf0ff; + pci_write_config16(PCI_DEV(0,2,0), GCFC, reg16); +} + +static void sdram_program_memory_frequency(struct sys_info *sysinfo) +{ + u32 clkcfg; + u8 reg8; + + printk_debug ("Setting Memory Frequency... "); + + clkcfg = MCHBAR32(CLKCFG); + + printk_debug("CLKCFG=0x%08x, ", clkcfg); + + clkcfg &= ~( (1 << 12) | (1 << 7) | ( 7 << 4) ); + + if (sysinfo->mvco4x) { + printk_debug("MVCO 4x, "); + clkcfg &= ~(1 << 12); + } + + if (sysinfo->clkcfg_bit7) { + printk_debug("second VCO, "); + + clkcfg |= (1 << 7); + } + + switch (sysinfo->memory_frequency) { + case 400: clkcfg |= (2 << 4); break; + case 533: clkcfg |= (3 << 4); break; + case 667: clkcfg |= (4 << 4); break; + default: die("Target Memory Frequency Error"); + } + + if (MCHBAR32(CLKCFG) == clkcfg) { + printk_debug ("ok (unchanged)\r\n"); + return; + } + + MCHBAR32(CLKCFG) = clkcfg; + + /* Make sure the following code is in the + * cache before we execute it. + */ + goto cache_code; +vco_update: + reg8 = pci_read_config8(PCI_DEV(0,0x1f,0), 0xa2); + reg8 &= ~(1 << 7); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); + + + clkcfg &= ~(1 << 10); + MCHBAR32(CLKCFG) = clkcfg; + clkcfg |= (1 << 10); + MCHBAR32(CLKCFG) = clkcfg; + + + __asm__ __volatile__ ( + " movl $0x100, %%ecx\n" + "delay_update:\n" + " nop\n" + " nop\n" + " nop\n" + " nop\n" + " loop delay_update\n" + : /* No outputs */ + : /* No inputs */ + : "%ecx" + ); + + + clkcfg &= ~(1 << 10); + MCHBAR32(CLKCFG) = clkcfg; + + goto out; +cache_code: + goto vco_update; +out: + + printk_debug("CLKCFG=0x%08x, ", MCHBAR32(CLKCFG)); + printk_debug ("ok\r\n"); +} + +static void sdram_program_clock_crossing(void) +{ + u32 reg32; + int idx = 0; + + /** + * The first two lines of each of these tables are for FSB533, + * the following three lines are for FSB667. We ignore FSB400. + * Thus we add the indices according to our clocks from CLKCFG. + */ + + static const u32 data_clock_crossing[] = { + 0x08040120, 0x00000000, /* DDR400 FSB533 */ + 0x00100401, 0x00000000, /* DDR533 FSB533 */ + + 0x04020120, 0x00000010, /* DDR400 FSB667 */ + 0x10040280, 0x00000040, /* DDR533 FSB667 */ + 0x00100401, 0x00000000 /* DDR667 FSB667 */ + }; + + static const u32 command_clock_crossing[] = { + 0x00060108, 0x00000000, /* DDR400 FSB533 */ + 0x04020108, 0x00000000, /* DDR533 FSB533 */ + + 0x00040318, 0x00000000, /* DDR400 FSB667 */ + 0x04020118, 0x00000000, /* DDR533 FSB667 */ + 0x02010804, 0x00000000 /* DDR667 FSB667 */ + }; + + printk_debug("Programming Clock Crossing..."); + reg32 = MCHBAR32(CLKCFG); + + printk_debug("MEM="); + switch ((reg32 >> 4) & 7) { + case 2: printk_debug("400"); idx += 0; break; + case 3: printk_debug("533"); idx += 2; break; + case 4: printk_debug("667"); idx += 4; break; + default: printk_debug("RSVD\r\n"); return; + } + + printk_debug(" FSB="); + switch (reg32 & 7) { + case 0: printk_debug("400\r\n"); return; + case 1: printk_debug("533"); idx += 0; break; + case 3: printk_debug("667"); idx += 4; break; + default: printk_debug("RSVD\r\n"); return; + } + + MCHBAR32(C0DCCFT + 0) = data_clock_crossing[idx]; + MCHBAR32(C0DCCFT + 4) = data_clock_crossing[idx + 1]; + MCHBAR32(C1DCCFT + 0) = data_clock_crossing[idx]; + MCHBAR32(C1DCCFT + 4) = data_clock_crossing[idx + 1]; + + MCHBAR32(CCCFT + 0) = command_clock_crossing[idx]; + MCHBAR32(CCCFT + 4) = command_clock_crossing[idx + 1]; + + printk_debug("... ok\r\n"); +} + +static void sdram_disable_fast_dispatch(void) +{ + u32 reg32; + + reg32 = MCHBAR32(FSBPMC3); + reg32 |= (1 << 1); + MCHBAR32(FSBPMC3) = reg32; + + reg32 = MCHBAR32(SBTEST); + reg32 |= (3 << 1); + MCHBAR32(SBTEST) = reg32; +} + +static void sdram_pre_jedec_initialization(void) +{ + u32 reg32; + + reg32 = MCHBAR32(WCC); + reg32 &= 0x113ff3ff; + reg32 |= (4 << 29) | (3 << 25) | (1 << 10); + MCHBAR32(WCC) = reg32; + + MCHBAR32(SMVREFC) |= (1 << 6); + + MCHBAR32(MMARB0) &= ~(3 << 17); + MCHBAR32(MMARB0) |= (1 << 21) | (1 << 16); + + MCHBAR32(MMARB1) &= ~(7 << 8); + MCHBAR32(MMARB1) |= (3 << 8); + + MCHBAR32(C0AIT) = 0x000006c4; + MCHBAR32(C0AIT+4) = 0x871a066d; + + MCHBAR32(C1AIT) = 0x000006c4; + MCHBAR32(C1AIT+4) = 0x871a066d; +} + +#define EA_DUALCHANNEL_XOR_BANK_RANK_MODE (0xd4 << 24) +#define EA_DUALCHANNEL_XOR_BANK_MODE (0xf4 << 24) +#define EA_DUALCHANNEL_BANK_RANK_MODE (0xc2 << 24) +#define EA_DUALCHANNEL_BANK_MODE (0xe2 << 24) +#define EA_SINGLECHANNEL_XOR_BANK_RANK_MODE (0x91 << 24) +#define EA_SINGLECHANNEL_XOR_BANK_MODE (0xb1 << 24) +#define EA_SINGLECHANNEL_BANK_RANK_MODE (0x80 << 24) +#define EA_SINGLECHANNEL_BANK_MODE (0xa0 << 24) + +static void sdram_enhanced_addressing_mode(struct sys_info *sysinfo) +{ + u32 chan0 = 0, chan1 = 0; + int chan0_dualsided, chan1_dualsided, chan0_populated, chan1_populated; + + chan0_populated = (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED); + chan1_populated = (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED || + sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED); + chan0_dualsided = (sysinfo->banksize[1] || sysinfo->banksize[3]); + chan1_dualsided = (sysinfo->banksize[5] || sysinfo->banksize[7]); + + if (sdram_capabilities_enhanced_addressing_xor()) { + if (!sysinfo->interleaved) { + /* Single Channel & Dual Channel Assymetric */ + if (chan0_populated) { + if (chan0_dualsided) { + chan0 = EA_SINGLECHANNEL_XOR_BANK_RANK_MODE; + } else { + chan0 = EA_SINGLECHANNEL_XOR_BANK_MODE; + } + } + if (chan1_populated) { + if (chan1_dualsided) { + chan1 = EA_SINGLECHANNEL_XOR_BANK_RANK_MODE; + } else { + chan1 = EA_SINGLECHANNEL_XOR_BANK_MODE; + } + } + } else { + /* Interleaved has always both channels populated */ + if (chan0_dualsided) { + chan0 = EA_DUALCHANNEL_XOR_BANK_RANK_MODE; + } else { + chan0 = EA_DUALCHANNEL_XOR_BANK_MODE; + } + + if (chan1_dualsided) { + chan1 = EA_DUALCHANNEL_XOR_BANK_RANK_MODE; + } else { + chan1 = EA_DUALCHANNEL_XOR_BANK_MODE; + } + } + } else { + if (!sysinfo->interleaved) { + /* Single Channel & Dual Channel Assymetric */ + if (chan0_populated) { + if (chan0_dualsided) { + chan0 = EA_SINGLECHANNEL_BANK_RANK_MODE; + } else { + chan0 = EA_SINGLECHANNEL_BANK_MODE; + } + } + if (chan1_populated) { + if (chan1_dualsided) { + chan1 = EA_SINGLECHANNEL_BANK_RANK_MODE; + } else { + chan1 = EA_SINGLECHANNEL_BANK_MODE; + } + } + } else { + /* Interleaved has always both channels populated */ + if (chan0_dualsided) { + chan0 = EA_DUALCHANNEL_BANK_RANK_MODE; + } else { + chan0 = EA_DUALCHANNEL_BANK_MODE; + } + + if (chan1_dualsided) { + chan1 = EA_DUALCHANNEL_BANK_RANK_MODE; + } else { + chan1 = EA_DUALCHANNEL_BANK_MODE; + } + } + } + + MCHBAR32(C0DRC1) &= 0x00ffffff; + MCHBAR32(C0DRC1) |= chan0; + MCHBAR32(C1DRC1) &= 0x00ffffff; + MCHBAR32(C1DRC1) |= chan1; +} + +static void sdram_post_jedec_initialization(struct sys_info *sysinfo) +{ + u32 reg32; + + /* Enable Channel XORing for Dual Channel Interleave */ + if (sysinfo->interleaved) { + reg32 = MCHBAR32(DCC); +#if CHANNEL_XOR_RANDOMIZATION + reg32 &= ~(1 << 10); +#endif + reg32 &= ~(1 << 9); + MCHBAR32(DCC) = reg32; + } + + /* DRAM mode optimizations */ + sdram_enhanced_addressing_mode(sysinfo); + + reg32 = MCHBAR32(FSBPMC3); + reg32 &= ~(1 << 1); + MCHBAR32(FSBPMC3) = reg32; + + reg32 = MCHBAR32(SBTEST); + reg32 &= ~(1 << 2); + MCHBAR32(SBTEST) = reg32; + + reg32 = MCHBAR32(SBOCC); + reg32 &= 0xffbdb6ff; + reg32 |= (0xbdb6 << 8) | (1 << 0); + MCHBAR32(SBOCC) = reg32; +} + +static void sdram_power_management(struct sys_info *sysinfo) +{ + u8 reg8; + u16 reg16; + u32 reg32; + int integrated_graphics = 1; + int i; + + reg32 = MCHBAR32(C0DRT2); + reg32 &= 0xffffff00; + /* Idle timer = 8 clocks, CKE idle timer = 16 clocks */ + reg32 |= (1 << 5) | (1 << 4); + MCHBAR32(C0DRT2) = reg32; + + reg32 = MCHBAR32(C1DRT2); + reg32 &= 0xffffff00; + /* Idle timer = 8 clocks, CKE idle timer = 16 clocks */ + reg32 |= (1 << 5) | (1 << 4); + MCHBAR32(C1DRT2) = reg32; + + reg32 = MCHBAR32(C0DRC1); + + reg32 |= (1 << 12) | (1 << 11); + MCHBAR32(C0DRC1) = reg32; + + reg32 = MCHBAR32(C1DRC1); + + reg32 |= (1 << 12) | (1 << 11); + MCHBAR32(C1DRC1) = reg32; + + if (i945_silicon_revision()>1) { + MCHBAR16(UPMC1) = 0x1010; + } else { + /* Rev 0 and 1 */ + MCHBAR16(UPMC1) = 0x0010; + } + + reg16 = MCHBAR16(UPMC2); + reg16 &= 0xfc00; + reg16 |= 0x0100; + MCHBAR16(UPMC2) = reg16; + + MCHBAR32(UPMC3) = 0x000f06ff; + + for (i=0; i<5; i++) { + MCHBAR32(UPMC3) &= ~(1 << 16); + MCHBAR32(UPMC3) |= (1 << 16); + } + + MCHBAR32(GIPMC1) = 0x8000000c; + + reg16 = MCHBAR16(CPCTL); + reg16 &= ~(7 << 11); + if (i945_silicon_revision()>2) { + reg16 |= (6 << 11); + } else { + reg16 |= (4 << 11); + } + MCHBAR16(CPCTL) = reg16; + + if ((MCHBAR32(ECO) & (1 << 16)) != 0) { + switch (sysinfo->fsb_frequency) { + case 667: MCHBAR32(HGIPMC2) = 0x0d590d59; break; + case 533: MCHBAR32(HGIPMC2) = 0x155b155b; break; + } + } else { + switch (sysinfo->fsb_frequency) { + case 667: MCHBAR32(HGIPMC2) = 0x09c409c4; break; + case 533: MCHBAR32(HGIPMC2) = 0x0fa00fa0; break; + } + } + + MCHBAR32(FSBPMC1) = 0x8000000c; + + reg32 = MCHBAR32(C2C3TT); + reg32 &= 0xffff0000; + switch (sysinfo->fsb_frequency) { + case 667: reg32 |= 0x0600; break; + case 533: reg32 |= 0x0480; break; + } + MCHBAR32(C2C3TT) = reg32; + + reg32 = MCHBAR32(C3C4TT); + reg32 &= 0xffff0000; + switch (sysinfo->fsb_frequency) { + case 667: reg32 |= 0x0b80; break; + case 533: reg32 |= 0x0980; break; + } + MCHBAR32(C3C4TT) = reg32; + + if (i945_silicon_revision() == 0) { + MCHBAR32(ECO) &= ~(1 << 16); + } else { + MCHBAR32(ECO) |= (1 << 16); + } + +#if 0 + if (i945_silicon_revision() == 0) { + MCHBAR32(FSBPMC3) &= ~(1 << 29); + } else { + MCHBAR32(FSBPMC3) |= (1 << 29); + } +#endif + MCHBAR32(FSBPMC3) &= ~(1 << 29); + + MCHBAR32(FSBPMC3) |= (1 << 21); + + MCHBAR32(FSBPMC3) &= ~(1 << 19); + + MCHBAR32(FSBPMC3) &= ~(1 << 13); + + reg32 = MCHBAR32(FSBPMC4); + reg32 &= ~(3 << 24); + reg32 |= ( 2 << 24); + MCHBAR32(FSBPMC4) = reg32; + + MCHBAR32(FSBPMC4) |= (1 << 21); + + MCHBAR32(FSBPMC4) |= (1 << 5); + + if (i945_silicon_revision() < 2) { + /* stepping 0 and 1 */ + MCHBAR32(FSBPMC4) &= ~(1 << 4); + } else { + MCHBAR32(FSBPMC4) &= ~(1 << 4); + } + + reg8 = pci_read_config8(PCI_DEV(0,0x0,0), 0xfc); + reg8 |= (1 << 4); + pci_write_config8(PCI_DEV(0, 0x0, 0), 0xfc, reg8); + + reg8 = pci_read_config8(PCI_DEV(0,0x2,0), 0xc1); + reg8 |= (1 << 2); + pci_write_config8(PCI_DEV(0, 0x2, 0), 0xc1, reg8); + + if (integrated_graphics) { + MCHBAR16(MIPMC4) = 0x0468; + MCHBAR16(MIPMC5) = 0x046c; + MCHBAR16(MIPMC6) = 0x046c; + } else { + MCHBAR16(MIPMC4) = 0x6468; + MCHBAR16(MIPMC5) = 0x646c; + MCHBAR16(MIPMC6) = 0x646c; + } + + reg32 = MCHBAR32(PMCFG); + reg32 &= ~(3 << 17); + reg32 |= (2 << 17); + reg32 |= (1 << 4); + MCHBAR32(PMCFG) = reg32; + + reg32 = MCHBAR32(0xc30); + reg32 &= 0xffffff00; + reg32 |= 0x01; + MCHBAR32(0xc30) = reg32; + + MCHBAR32(0xb18) &= ~(1 << 21); +} + +static void sdram_thermal_management(void) +{ + /* The Thermal Sensors for DIMMs at 0x50, 0x52 are at I2C addr + * 0x30/0x32. + */ + + /* Explicitly set to 0 */ + MCHBAR8(TCO1) = 0x00; + MCHBAR8(TCO0) = 0x00; +} + +#include "rcven.c" + +static void sdram_program_receive_enable(struct sys_info *sysinfo) +{ + MCHBAR32(REPC) |= (1 << 0); + + receive_enable_adjust(sysinfo); + + MCHBAR32(C0DRC1) |= (1 << 6); + MCHBAR32(C1DRC1) |= (1 << 6); + MCHBAR32(C0DRC1) &= ~(1 << 6); + MCHBAR32(C1DRC1) &= ~(1 << 6); + + MCHBAR32(MIPMC3) |= (0x0f << 0); +} + +/** + * @brief Enable On-Die Termination for DDR2. + * + */ + +static void sdram_on_die_termination(struct sys_info *sysinfo) +{ + static const u32 odt[] = { + 0x00024911, 0xe0010000, + 0x00049211, 0xe0020000, + 0x0006db11, 0xe0030000, + }; + + u32 reg32; + int cas; + + reg32 = MCHBAR32(ODTC); + reg32 &= ~(3 << 16); + reg32 |= (1 << 14) | (1 << 6) | (2 << 16); + MCHBAR32(ODTC) = reg32; + + if ( !(sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED && + sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) ) { + printk_debug("one dimm per channel config.. \n"); + + reg32 = MCHBAR32(C0ODT); + reg32 &= ~(7 << 28); + MCHBAR32(C0ODT) = reg32; + reg32 = MCHBAR32(C1ODT); + reg32 &= ~(7 << 28); + MCHBAR32(C1ODT) = reg32; + } + + cas = sysinfo->cas; + + reg32 = MCHBAR32(C0ODT) & 0xfff00000; + reg32 |= odt[(cas-3) * 2]; + MCHBAR32(C0ODT) = reg32; + + reg32 = MCHBAR32(C1ODT) & 0xfff00000; + reg32 |= odt[(cas-3) * 2]; + MCHBAR32(C1ODT) = reg32; + + reg32 = MCHBAR32(C0ODT + 4) & 0x1fc8ffff; + reg32 |= odt[((cas-3) * 2) + 1]; + MCHBAR32(C0ODT + 4) = reg32; + + reg32 = MCHBAR32(C1ODT + 4) & 0x1fc8ffff; + reg32 |= odt[((cas-3) * 2) + 1]; + MCHBAR32(C1ODT + 4) = reg32; +} + +/** + * @brief Enable clocks to populated sockets + */ + +static void sdram_enable_memory_clocks(struct sys_info *sysinfo) +{ + u8 clocks[2] = { 0, 0 }; + + if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED) + clocks[0] |= (1 << 0) | (1 << 1); + + if (sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) + clocks[0] |= (1 << 2) | (1 << 3); + + if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED) + clocks[1] |= (1 << 0) | (1 << 1); + + if (sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) + clocks[1] |= (1 << 2) | (1 << 3); + +#ifdef OVERRIDE_CLOCK_DISABLE + clocks[0] = 0xf; + clocks[1] = 0xf; +#endif + + MCHBAR8(C0DCLKDIS) = clocks[0]; + MCHBAR8(C1DCLKDIS) = clocks[1]; +} + +#define RTT_ODT_75_OHM (1 << 5) +#define RTT_ODT_150_OHM (1 << 9) + +#define EMRS_OCD_DEFAULT ( (1 << 12) | (1 << 11) | (1 << 10) ) + +#define MRS_CAS_3 (3 << 7) +#define MRS_CAS_4 (4 << 7) +#define MRS_CAS_5 (5 << 7) + +#define MRS_TWR_3 (2 << 12) +#define MRS_TWR_4 (3 << 12) +#define MRS_TWR_5 (4 << 12) + +#define MRS_BT (1 << 6) + +#define MRS_BL4 (2 << 3) +#define MRS_BL8 (3 << 3) + +static void sdram_jedec_enable(struct sys_info *sysinfo) +{ + int i, nonzero; + u32 bankaddr = 0, tmpaddr, mrsaddr = 0; + + for (i = 0, nonzero = -1; i < 8; i++) { + if (sysinfo->banksize[i] == 0) { + continue; + } + + printk_debug("jedec enable sequence: bank %d\n", i); + switch (i) { + case 0: + /* Start at address 0 */ + bankaddr = 0; + break; + case 4: + if (sysinfo->interleaved) { + bankaddr = 0x40; + break; + } + default: + if (nonzero != -1) { + printk_debug("bankaddr from bank size of rank %d\n", nonzero); + bankaddr += (1 << sysinfo->banksize[nonzero]) << (sysinfo->interleaved?28:27); + break; + } + /* No populated bank hit before. Start at address 0 */ + bankaddr = 0; + } + + /* We have a bank with a non-zero size.. Remember it + * for the next offset we have to calculate + */ + nonzero = i; + + /* Get CAS latency set up */ + switch (sysinfo->cas) { + case 5: mrsaddr = MRS_CAS_5; break; + case 4: mrsaddr = MRS_CAS_4; break; + case 3: mrsaddr = MRS_CAS_3; break; + default: die("Jedec Error (CAS).\n"); + } + + /* Get tWR set */ + switch (sysinfo->twr) { + case 5: mrsaddr |= MRS_TWR_5; break; + case 4: mrsaddr |= MRS_TWR_4; break; + case 3: mrsaddr |= MRS_TWR_3; break; + default: die("Jedec Error (tWR).\n"); + } + + /* Interleaved */ + if (sysinfo->interleaved) { + mrsaddr |= MRS_BT; + mrsaddr = mrsaddr << 1; + } + + /* Only burst length 8 supported */ + mrsaddr |= MRS_BL8; + + /* Apply NOP */ + PRINTK_DEBUG("Apply NOP\r\n"); + do_ram_command(RAM_COMMAND_NOP); + ram_read32(bankaddr); + + /* Precharge all banks */ + PRINTK_DEBUG("All Banks Precharge\r\n"); + do_ram_command(RAM_COMMAND_PRECHARGE); + ram_read32(bankaddr); + + /* Extended Mode Register Set (2) */ + PRINTK_DEBUG("Extended Mode Register Set(2)\r\n"); + do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_2); + ram_read32(bankaddr); + + /* Extended Mode Register Set (3) */ + PRINTK_DEBUG("Extended Mode Register Set(3)\r\n"); + do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_3); + ram_read32(bankaddr); + + /* Extended Mode Register Set */ + PRINTK_DEBUG("Extended Mode Register Set\r\n"); + do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); + tmpaddr = bankaddr; + if (!sdram_capabilities_dual_channel()) { + tmpaddr |= RTT_ODT_75_OHM; + } else if (sysinfo->interleaved) { + tmpaddr |= (RTT_ODT_150_OHM << 1); + } else { + tmpaddr |= RTT_ODT_150_OHM; + } + ram_read32(tmpaddr); + + /* Mode Register Set: Reset DLLs */ + PRINTK_DEBUG("MRS: Reset DLLs\r\n"); + do_ram_command(RAM_COMMAND_MRS); + tmpaddr = bankaddr; + tmpaddr |= mrsaddr; + /* Set DLL reset bit */ + if (sysinfo->interleaved) + tmpaddr |= (1 << 12); + else + tmpaddr |= (1 << 11); + ram_read32(tmpaddr); + + /* Precharge all banks */ + PRINTK_DEBUG("All Banks Precharge\r\n"); + do_ram_command(RAM_COMMAND_PRECHARGE); + ram_read32(bankaddr); + + /* CAS before RAS Refresh */ + PRINTK_DEBUG("CAS before RAS\r\n"); + do_ram_command(RAM_COMMAND_CBR); + + /* CBR wants two READs */ + ram_read32(bankaddr); + ram_read32(bankaddr); + + /* Mode Register Set: Enable DLLs */ + PRINTK_DEBUG("MRS: Enable DLLs\r\n"); + do_ram_command(RAM_COMMAND_MRS); + + tmpaddr = bankaddr; + tmpaddr |= mrsaddr; + ram_read32(tmpaddr); + + /* Extended Mode Register Set */ + PRINTK_DEBUG("Extended Mode Register Set: ODT/OCD\r\n"); + do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); + + tmpaddr = bankaddr; + if (!sdram_capabilities_dual_channel()) { + + tmpaddr |= RTT_ODT_75_OHM | EMRS_OCD_DEFAULT; + } else if (sysinfo->interleaved) { + tmpaddr |= ((RTT_ODT_150_OHM | EMRS_OCD_DEFAULT) << 1); + } else { + tmpaddr |= RTT_ODT_150_OHM | EMRS_OCD_DEFAULT; + } + ram_read32(tmpaddr); + + /* Extended Mode Register Set */ + PRINTK_DEBUG("Extended Mode Register Set: OCD Exit\r\n"); + do_ram_command(RAM_COMMAND_EMRS | RAM_EMRS_1); + + tmpaddr = bankaddr; + if (!sdram_capabilities_dual_channel()) { + tmpaddr |= RTT_ODT_75_OHM; + } else if (sysinfo->interleaved) { + tmpaddr |= (RTT_ODT_150_OHM << 1); + } else { + tmpaddr |= RTT_ODT_150_OHM; + } + ram_read32(tmpaddr); + } +} + +static void sdram_init_complete(void) +{ + PRINTK_DEBUG("Normal Operation\r\n"); + do_ram_command(RAM_COMMAND_NORMAL); +} + +static void sdram_setup_processor_side(void) +{ + if (i945_silicon_revision() == 0) + MCHBAR32(FSBPMC3) |= (1 << 2); + + MCHBAR8(0xb00) |= 1; + + if (i945_silicon_revision() == 0) + MCHBAR32(SLPCTL) |= (1 << 8); +} + +#define BOOT_MODE_RESUME 1 +#define BOOT_MODE_NORMAL 0 + +/** + * @param boot_mode: 0 = normal, 1 = resume + */ +void sdram_initialize(int boot_mode) +{ + struct sys_info sysinfo; + u8 reg8, cas_mask; + + sdram_detect_errors(); + + printk_debug ("Setting up RAM controller.\r\n"); + + memset(&sysinfo, 0, sizeof(sysinfo)); + + /* Look at the type of DIMMs and verify all DIMMs are x8 or x16 width */ + sdram_get_dram_configuration(&sysinfo); + + /* Check whether we have stacked DIMMs */ + sdram_verify_package_type(&sysinfo); + + /* Determine common CAS */ + cas_mask = sdram_possible_cas_latencies(&sysinfo); + + /* Choose Common Frequency */ + sdram_detect_cas_latency_and_ram_speed(&sysinfo, cas_mask); + + /* Determine smallest common tRAS */ + sdram_detect_smallest_tRAS(&sysinfo); + + /* Determine tRP */ + sdram_detect_smallest_tRP(&sysinfo); + + /* Determine tRCD */ + sdram_detect_smallest_tRCD(&sysinfo); + + /* Determine smallest refresh period */ + sdram_detect_smallest_refresh(&sysinfo); + + /* Verify all DIMMs support burst length 8 */ + sdram_verify_burst_length(&sysinfo); + + /* determine tWR */ + sdram_detect_smallest_tWR(&sysinfo); + + /* Determine DIMM size parameters (rows, columns banks) */ + sdram_detect_dimm_size(&sysinfo); + + /* determine tRFC */ + sdram_detect_smallest_tRFC(&sysinfo); + + /* Program PLL settings */ + sdram_program_pll_settings(); + + /* Program Graphics Frequency */ + sdram_program_graphics_frequency(&sysinfo); + + /* Program System Memory Frequency */ + sdram_program_memory_frequency(&sysinfo); + + /* Determine Mode of Operation (Interleaved etc) */ + sdram_set_channel_mode(&sysinfo); + + /* Program Clock Crossing values */ + sdram_program_clock_crossing(); + + /* Disable fast dispatch */ + sdram_disable_fast_dispatch(); + + /* Enable WIODLL Power Down in ACPI states */ + MCHBAR32(C0DMC) |= (1 << 24); + MCHBAR32(C1DMC) |= (1 << 24); + + /* Program DRAM Row Boundary/Attribute Registers */ + + if (boot_mode != BOOT_MODE_RESUME) { + /* program row size DRB and set TOLUD */ + sdram_program_row_boundaries(&sysinfo); + + /* program page size DRA */ + sdram_set_row_attributes(&sysinfo); + } + + /* Program CxBNKARC */ + sdram_set_bank_architecture(&sysinfo); + + /* Program DRAM Timing and Control registers based on SPD */ + sdram_set_timing_and_control(&sysinfo); + + /* On-Die Termination Adjustment */ + sdram_on_die_termination(&sysinfo); + + /* Pre Jedec Initialization */ + sdram_pre_jedec_initialization(); + + /* Perform System Memory IO Initialization */ + sdram_initialize_system_memory_io(&sysinfo); + + /* Perform System Memory IO Buffer Enable */ + sdram_enable_system_memory_io(&sysinfo); + + /* Enable System Memory Clocks */ + sdram_enable_memory_clocks(&sysinfo); + + if (boot_mode != BOOT_MODE_RESUME) { + /* Jedec Initialization sequence */ + sdram_jedec_enable(&sysinfo); + } + + /* Program Power Management Registers */ + sdram_power_management(&sysinfo); + + /* Post Jedec Init */ + sdram_post_jedec_initialization(&sysinfo); + + /* Program DRAM Throttling */ + sdram_thermal_management(); + + /* Normal Operations */ + sdram_init_complete(); + + /* Program Receive Enable Timings */ + sdram_program_receive_enable(&sysinfo); + + /* Enable Periodic RCOMP */ + sdram_enable_rcomp(); + + /* Tell ICH7 that we're done */ + reg8 = pci_read_config8(PCI_DEV(0,0x1f,0), 0xa2); + reg8 &= ~(1 << 7); + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, reg8); + + printk_debug("RAM initialization finished.\r\n"); + + sdram_setup_processor_side(); +} + diff --git a/src/northbridge/intel/i945/raminit.h b/src/northbridge/intel/i945/raminit.h new file mode 100644 index 0000000000..33ed700826 --- /dev/null +++ b/src/northbridge/intel/i945/raminit.h @@ -0,0 +1,67 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef RAMINIT_H +#define RAMINIT_H + +#define DIMM_SOCKETS 2 + +#define DIMM_SPD_BASE 0x50 +#define DIMM_TCO_BASE 0x30 + +/* Burst length is always 8 */ +#define BURSTLENGTH 8 + +struct sys_info { + u16 memory_frequency; /* 400, 533 or 667 */ + u16 fsb_frequency; /* 400, 533 or 667 */ + + u8 trp; /* calculated by sdram_detect_smallest_tRP() */ + u8 trcd; /* calculated by sdram_detect_smallest_tRCD() */ + u8 tras; /* calculated by sdram_detect_smallest_tRAS() */ + u8 trfc; /* calculated by sdram_detect_smallest_tRFC() */ + u8 twr; /* calculated by sdram_detect_smallest_tWR() */ + + u8 cas; /* 3, 4 or 5 */ + u8 refresh; /* 0 = 15.6us, 1 = 7.8us */ + + u8 dual_channel; /* 0 or 1 */ + u8 interleaved; + + u8 mvco4x; /* 0 (8x) or 1 (4x) */ + u8 clkcfg_bit7; + u8 boot_path; + + u8 package; /* 0 = planar, 1 = stacked */ +#define SYSINFO_PACKAGE_PLANAR 0x00 +#define SYSINFO_PACKAGE_STACKED 0x01 + u8 dimm[2 * DIMM_SOCKETS]; +#define SYSINFO_DIMM_X16DS 0x00 +#define SYSINFO_DIMM_X8DS 0x01 +#define SYSINFO_DIMM_X16SS 0x02 +#define SYSINFO_DIMM_X8DDS 0x03 +#define SYSINFO_DIMM_NOT_POPULATED 0x04 + + u8 banks[2 * DIMM_SOCKETS]; + + u8 banksize[2 * 2 * DIMM_SOCKETS]; + +} __attribute__ ((packed)); + +#endif /* RAMINIT_H */ diff --git a/src/northbridge/intel/i945/rcven.c b/src/northbridge/intel/i945/rcven.c new file mode 100644 index 0000000000..e7eea611f2 --- /dev/null +++ b/src/northbridge/intel/i945/rcven.c @@ -0,0 +1,338 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "raminit.h" + +/** + * sample the strobes signal + */ +static u32 sample_strobes(int channel_offset, struct sys_info *sysinfo) +{ + u32 reg32, addr; + int i; + + MCHBAR32(C0DRC1 + channel_offset) |= (1 << 6); + + MCHBAR32(C0DRC1 + channel_offset) &= ~(1 << 6); + + addr = 0; + + if (channel_offset != 0) { /* must be dual channel */ + if (sysinfo->interleaved == 1) { + addr |= (1 << 6); + } else { + addr = ((u32)MCHBAR8(C0DRB3)) << 25; + } + } + + for (i = 0; i < 28; i++) { + read32(addr); + read32(addr + 0x80); + } + + reg32 = MCHBAR32(RCVENMT); + if (channel_offset == 0) { + reg32 = reg32 << 2; + } + + /** + * [19] = 1: all bits are high + * [18] = 1: all bits are low + * [19:18] = 00: bits are mixed high, low + */ + return reg32; +} + +/** + * This function sets receive enable coarse and medium timing parameters + */ + +static void set_receive_enable(int channel_offset, u8 medium, u8 coarse) +{ + u32 reg32; + + printk_spew(" set_receive_enable() medium=0x%x, coarse=0x%x\r\n", medium, coarse); + + reg32 = MCHBAR32(C0DRT1 + channel_offset); + reg32 &= 0xf0ffffff; + reg32 |= ((u32)coarse & 0x0f) << 24; + MCHBAR32(C0DRT1 + channel_offset) = reg32; + + if (coarse > 0x0f) + printk_debug("set_receive_enable: coarse overflow: 0x%02x.\n", coarse); + + /* medium control + * + * 00 - 1/4 clock + * 01 - 1/2 clock + * 10 - 3/4 clock + * 11 - 1 clock + */ + + reg32 = MCHBAR32(RCVENMT); + if (!channel_offset) { + + reg32 &= ~(3 << 2); + reg32 |= medium << 2; + } else { + + reg32 &= ~(3 << 0); + reg32 |= medium; + } + MCHBAR32(RCVENMT) = reg32; + +} + +static int normalize(int channel_offset, u8 * mediumcoarse, u8 * fine) +{ + printk_spew(" normalize()\r\n"); + + if (*fine < 0x80) + return 0; + + *fine -= 0x80; + *mediumcoarse += 1; + + if (*mediumcoarse >= 0x40) { + printk_debug("Normalize Error\r\n"); + return -1; + } + + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + + MCHBAR8(C0WL0REOST + channel_offset) = *fine; + + return 0; +} + +static int find_preamble(int channel_offset, u8 * mediumcoarse, + struct sys_info *sysinfo) +{ + /* find start of the data phase */ + u32 reg32; + + printk_spew(" find_preamble()\r\n"); + + do { + if (*mediumcoarse < 4) { + + printk_debug("No Preamble found.\r\n"); + return -1; + } + *mediumcoarse -= 4; + + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + + reg32 = sample_strobes(channel_offset, sysinfo); + + } while (reg32 & (1 << 19)); + + if (!(reg32 & (1 << 18))) { + + printk_debug("No Preamble found (neither high nor low).\r\n"); + return -1; + } + + return 0; +} + +/** + * add a quarter clock to the current receive enable settings + */ + +static int add_quarter_clock(int channel_offset, u8 * mediumcoarse, u8 * fine) +{ + printk_spew(" add_quarter_clock() mediumcoarse=%02x fine=%02x\r\n", + *mediumcoarse, *fine); + if (*fine >= 0x80) { + *fine -= 0x80; + + *mediumcoarse += 2; + if (*mediumcoarse >= 0x40) { + printk_debug("clocks at max.\r\n"); + return -1; + } + + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + } else { + *fine += 0x80; + } + + MCHBAR8(C0WL0REOST + channel_offset) = *fine; + + return 0; +} + +static int find_strobes_low(int channel_offset, u8 * mediumcoarse, u8 * fine, + struct sys_info *sysinfo) +{ + u32 rcvenmt; + + printk_spew(" find_strobes_low()\r\n"); + + for (;;) { + MCHBAR8(C0WL0REOST + channel_offset) = *fine; + + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + + rcvenmt = sample_strobes(channel_offset, sysinfo); + + if (((rcvenmt & (1 << 18)) != 0)) + return 0; + + + *fine -= 0x80; + if (*fine == 0) + continue; + + *mediumcoarse -= 2; + if (*mediumcoarse < 0xfe) + continue; + + break; + + } + + printk_debug("Could not find low strobe\r\n"); + return 0; +} + +static int find_strobes_edge(int channel_offset, u8 * mediumcoarse, u8 * fine, + struct sys_info *sysinfo) +{ + int counter; + u32 rcvenmt; + + printk_spew(" find_strobes_edge()\r\n"); + + counter = 8; + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + + for (;;) { + MCHBAR8(C0WL0REOST + channel_offset) = *fine; + rcvenmt = sample_strobes(channel_offset, sysinfo); + + if ((rcvenmt & (1 << 19)) == 0) { + counter = 8; + } else { + counter--; + if (!counter) + break; + } + + *fine = *fine + 1; + if (*fine < 0xf8) { + if (*fine & (1 << 3)) { + *fine &= ~(1 << 3); + *fine += 0x10; + } + continue; + } + + *fine = 0; + *mediumcoarse += 2; + if (*mediumcoarse <= 0x40) { + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + continue; + } + + printk_debug("could not find rising edge.\r\n"); + return -1; + } + + *fine -= 7; + if (*fine >= 0xf9) { + *mediumcoarse -= 2; + set_receive_enable(channel_offset, *mediumcoarse & 3, + *mediumcoarse >> 2); + } + + *fine &= ~(1 << 3); + MCHBAR8(C0WL0REOST + channel_offset) = *fine; + + return 0; +} + +/** + * Here we use a trick. The RCVEN channel 0 registers are all at an + * offset of 0x80 to the channel 0 registers. We don't want to waste + * a lot of if()s so let's just pass 0 or 0x80 for the channel offset. + */ + +static int receive_enable_autoconfig(int channel_offset, + struct sys_info *sysinfo) +{ + u8 mediumcoarse; + u8 fine; + + printk_spew("receive_enable_autoconfig() for channel %d\r\n", + channel_offset ? 1 : 0); + + /* Set initial values */ + mediumcoarse = (sysinfo->cas << 2) | 3; + fine = 0; + + if (find_strobes_low(channel_offset, &mediumcoarse, &fine, sysinfo)) + return -1; + + if (find_strobes_edge(channel_offset, &mediumcoarse, &fine, sysinfo)) + return -1; + + if (add_quarter_clock(channel_offset, &mediumcoarse, &fine)) + return -1; + + if (find_preamble(channel_offset, &mediumcoarse, sysinfo)) + return -1; + + if (add_quarter_clock(channel_offset, &mediumcoarse, &fine)) + return -1; + + if (normalize(channel_offset, &mediumcoarse, &fine)) + return -1; + + /* This is a debug check to see if the rcven code is fully working. + * It can be removed when the output message is not printed anymore + */ + if (MCHBAR8(C0WL0REOST + channel_offset) == 0) { + printk_debug("Weird. No C%sWL0REOST\n", channel_offset?"1":"0"); + } + + return 0; +} + +void receive_enable_adjust(struct sys_info *sysinfo) +{ + /* Is channel 0 populated? */ + if (sysinfo->dimm[0] != SYSINFO_DIMM_NOT_POPULATED + || sysinfo->dimm[1] != SYSINFO_DIMM_NOT_POPULATED) + if (receive_enable_autoconfig(0, sysinfo)) + return; + + /* Is channel 1 populated? */ + if (sysinfo->dimm[2] != SYSINFO_DIMM_NOT_POPULATED + || sysinfo->dimm[3] != SYSINFO_DIMM_NOT_POPULATED) + if (receive_enable_autoconfig(0x80, sysinfo)) + return; +} diff --git a/src/northbridge/intel/i945/reset_test.c b/src/northbridge/intel/i945/reset_test.c new file mode 100644 index 0000000000..80d6316d1a --- /dev/null +++ b/src/northbridge/intel/i945/reset_test.c @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +static int bios_reset_detected(void) +{ + /* For now ... + * DO NOT, I repeat, DO NOT remove this. If you don't like the + * situation, implement this instead. + */ + return 0; +} + diff --git a/src/northbridge/intel/i945/udelay.c b/src/northbridge/intel/i945/udelay.c new file mode 100644 index 0000000000..9740c0870f --- /dev/null +++ b/src/northbridge/intel/i945/udelay.c @@ -0,0 +1,70 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <cpu/x86/tsc.h> +#include <cpu/x86/msr.h> + +/** + * Intel Core(tm) cpus always run the TSC at the maximum possible CPU clock + */ + +static void udelay(u32 us) +{ + u32 dword; + tsc_t tsc, tsc1, tscd; + msr_t msr; + u32 fsb = 0, divisor; + u32 d; + u32 dn = 0x1000000 / 2; + + msr = rdmsr(0xcd); + switch (msr.lo & 0x07) { + case 5: + fsb = 400; + break; + case 1: + fsb = 533; + break; + case 3: + fsb = 667; + break; + } + + msr = rdmsr(0x198); + divisor = (msr.hi >> 8) & 0x1f; + + d = fsb * divisor; + + tscd.hi = us / dn; + tscd.lo = (us - tscd.hi * dn) * d; + + tsc1 = rdtsc(); + dword = tsc1.lo + tscd.lo; + if ((dword < tsc1.lo) || (dword < tscd.lo)) { + tsc1.hi++; + } + tsc1.lo = dword; + tsc1.hi += tscd.hi; + + do { + tsc = rdtsc(); + } while ((tsc.hi > tsc1.hi) + || ((tsc.hi == tsc1.hi) && (tsc.lo > tsc1.lo))); + +} |