diff options
Diffstat (limited to 'src/southbridge/amd/sb700/early_setup.c')
| -rw-r--r-- | src/southbridge/amd/sb700/early_setup.c | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c new file mode 100644 index 0000000000..81ffc1c7d5 --- /dev/null +++ b/src/southbridge/amd/sb700/early_setup.c @@ -0,0 +1,619 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, Inc. + * + * 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 _SB700_EARLY_SETUP_C_ +#define _SB700_EARLY_SETUP_C_ + +#include <reset.h> +#include <arch/cpu.h> +#include "sb700.h" +#include "smbus.c" + +#define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */ + /*SIZE 0x40 */ + +static void pmio_write(u8 reg, u8 value) +{ + outb(reg, PM_INDEX); + outb(value, PM_INDEX + 1); +} + +static u8 pmio_read(u8 reg) +{ + outb(reg, PM_INDEX); + return inb(PM_INDEX + 1); +} + +/* RPR 2.28: Get SB ASIC Revision. */ +static u8 set_sb700_revision(void) +{ + device_t dev; + u8 rev_id, enable_14Mhz, byte; + u8 rev = 0; + + /* if (rev != 0) return rev; */ + + dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); + + if (dev == PCI_DEV_INVALID) { + die("SMBUS controller not found\n"); + /* NOT REACHED */ + } + rev_id = pci_read_config8(dev, 0x08); + + if (rev_id == 0x39) { + enable_14Mhz = (pmio_read(0x53) >> 6) & 1; + if (enable_14Mhz == 0x0) + rev = 0x11; /* A11 */ + else if (enable_14Mhz == 0x1) { + /* This happens, if does, only once. So later if we need to get + * the revision ID, we don't have to make such a big function. + * We just get reg 0x8 in smbus dev. 0x39 is A11, 0x3A is A12. */ + rev = 0x12; + byte = pci_read_config8(dev, 0x40); + byte |= 1 << 0; + pci_write_config8(dev, 0x40, byte); + + pci_write_config8(dev, 0x08, 0x3A); /* Change 0x39 to 0x3A. */ + + byte &= ~(1 << 0); + pci_write_config8(dev, 0x40, byte); + } + } else if (rev_id == 0x3A) { /* A12 will be 0x3A after BIOS is initialized */ + rev = 0x12; + } else if (rev_id == 0x3C) { + rev = 0x14; + } else if (rev_id == 0x3D) { + rev = 0x15; + } else + die("It is not SB700 or SB710\n"); + + return rev; +} + +/*************************************** +* Legacy devices are mapped to LPC space. +* Serial port 0 +* KBC Port +* ACPI Micro-controller port +* LPC ROM size +* This function does not change port 0x80 decoding. +* Console output through any port besides 0x3f8 is unsupported. +* If you use FWH ROMs, you have to setup IDSEL. +***************************************/ +static void sb700_lpc_init(void) +{ + u8 reg8; + u32 reg32; + device_t dev; + + dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */ + /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!! + * This bit has no meaning if debug strap is not enabled. So if the + * board keeps rebooting and the code fails to reach here, we could + * disable the debug strap first. */ + reg32 = pci_read_config32(dev, 0x4C); + reg32 |= 1 << 31; + pci_write_config32(dev, 0x4C, reg32); + + /* Enable lpc controller */ + reg32 = pci_read_config32(dev, 0x64); + reg32 |= 1 << 20; + pci_write_config32(dev, 0x64, reg32); + + dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0); /* LPC Controller */ + /* Decode port 0x3f8-0x3ff (Serial 0) */ + // XXX Serial port decode on LPC is hardcoded to 0x3f8 + reg8 = pci_read_config8(dev, 0x44); + reg8 |= 1 << 6; + pci_write_config8(dev, 0x44, reg8); + + /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/ + reg8 = pci_read_config8(dev, 0x47); + reg8 |= (1 << 5) | (1 << 6); + pci_write_config8(dev, 0x47, reg8); + + /* Enable PrefetchEnSPIFromHost to speed up SPI flash read (does not affect LPC) */ + reg8 = pci_read_config8(dev, 0xbb); + reg8 |= 1 << 0; + pci_write_config8(dev, 0xbb, reg8); + + /* SuperIO, LPC ROM */ + reg8 = pci_read_config8(dev, 0x48); + /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */ + reg8 |= (1 << 1) | (1 << 0); + /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */ + reg8 |= (1 << 3) | (1 << 4); + /* Decode port 0x70-0x73 (RTC) */ + reg8 |= 1 << 6; + pci_write_config8(dev, 0x48, reg8); + + /* hardware should enable LPC ROM by pin straps */ + /* ROM access at 0xFFF80000/0xFFF00000 - 0xFFFFFFFF */ + /* See detail in 43366_sb700_bdg_nda_1.01.pdf page 17. */ + /* enable LPC ROM range mirroring start 0x000e(0000) */ + pci_write_config16(dev, 0x68, 0x000e); + /* enable LPC ROM range mirroring end 0x000f(ffff) */ + pci_write_config16(dev, 0x6a, 0x000f); + /* enable LPC ROM range start, 0xfff8(0000): 512KB, 0xfff0(0000): 1MB */ + pci_write_config16(dev, 0x6c, 0xfff0); + /* enable LPC ROM range end at 0xffff(ffff) */ + pci_write_config16(dev, 0x6e, 0xffff); +} + +/* what is its usage? */ +static u32 get_sbdn(u32 bus) +{ + device_t dev; + + /* Find the device. */ + dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus); + return (dev >> 15) & 0x1f; +} + +static u8 dual_core(void) +{ + return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0; +} + +/* + * RPR 2.4 C-state and VID/FID change for the K8 platform. + */ +static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn) +{ + u8 byte; + byte = pmio_read(0x9a); + byte &= ~0x34; + if (dual_core()) + byte |= 0x34; + else + byte |= 0x04; + pmio_write(0x9a, byte); + + byte = pmio_read(0x8f); + byte &= ~0x30; + byte |= 0x20; + pmio_write(0x8f, byte); + + pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */ + pmio_write(0x8a, 0x90); + + pmio_write(0x88, 0x10); + + byte = pmio_read(0x7c); + byte |= 0x03; + pmio_write(0x7c, byte); + + /* Must be 0 for K8 platform. */ + byte = pmio_read(0x68); + byte &= ~0x01; + pmio_write(0x68, byte); + /* Must be 0 for K8 platform. */ + byte = pmio_read(0x8d); + byte &= ~(1<<6); + pmio_write(0x8d, byte); + + byte = pmio_read(0x61); + byte &= ~0x04; + pmio_write(0x61, byte); + + byte = pmio_read(0x42); + byte &= ~0x04; + pmio_write(0x42, byte); + + pmio_write(0x89, 0x10); +} + +void hard_reset(void) +{ + set_bios_reset(); + + /* full reset */ + outb(0x0a, 0x0cf9); + outb(0x0e, 0x0cf9); +} + +void soft_reset(void) +{ + set_bios_reset(); + /* link reset */ + outb(0x06, 0x0cf9); +} + +void sb700_pci_port80(void) +{ + u8 byte; + device_t dev; + + /* P2P Bridge */ + dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0); + + /* Chip Control: Enable subtractive decoding */ + byte = pci_read_config8(dev, 0x40); + byte |= 1 << 5; + pci_write_config8(dev, 0x40, byte); + + /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */ + byte = pci_read_config8(dev, 0x4B); + byte |= 1 << 7; + pci_write_config8(dev, 0x4B, byte); + + /* The same IO Base and IO Limit here is meaningful because we set the + * bridge to be subtractive. During early setup stage, we have to make + * sure that data can go through port 0x80. + */ + /* IO Base: 0xf000 */ + byte = pci_read_config8(dev, 0x1C); + byte |= 0xF << 4; + pci_write_config8(dev, 0x1C, byte); + + /* IO Limit: 0xf000 */ + byte = pci_read_config8(dev, 0x1D); + byte |= 0xF << 4; + pci_write_config8(dev, 0x1D, byte); + + /* PCI Command: Enable IO response */ + byte = pci_read_config8(dev, 0x04); + byte |= 1 << 0; + pci_write_config8(dev, 0x04, byte); + + /* LPC controller */ + dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0); + + byte = pci_read_config8(dev, 0x4A); + byte &= ~(1 << 5); /* disable lpc port 80 */ + pci_write_config8(dev, 0x4A, byte); +} + +void sb700_lpc_port80(void) +{ + u8 byte; + device_t dev; + u32 reg32; + + /* Enable LPC controller */ + dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); + reg32 = pci_read_config32(dev, 0x64); + reg32 |= 0x00100000; /* lpcEnable */ + pci_write_config32(dev, 0x64, reg32); + + /* Enable port 80 LPC decode in pci function 3 configuration space. */ + dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0); + byte = pci_read_config8(dev, 0x4a); + byte |= 1 << 5; /* enable port 80 */ + pci_write_config8(dev, 0x4a, byte); +} + +/* sbDevicesPorInitTable */ +static void sb700_devices_por_init(void) +{ + device_t dev; + u8 byte; + + printk(BIOS_INFO, "sb700_devices_por_init()\n"); + /* SMBus Device, BDF:0-20-0 */ + printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n"); + dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); + + if (dev == PCI_DEV_INVALID) { + die("SMBUS controller not found\n"); + /* NOT REACHED */ + } + printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n", + set_sb700_revision()); + + /* sbPorAtStartOfTblCfg */ + /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0. + * This is an I/O address. The I/O address must be on 16-byte boundry. */ + pci_write_config32(dev, 0xf0, AB_INDX); + + /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */ + /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */ + axcfg_reg(0x04, 1 << 2, 1 << 2); + axindxc_reg(0x21, 0xff, 0); + + /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */ + axindxc_reg(0x10, 1 << 9, 1 << 9); + /* END of sbPorAtStartOfTblCfg */ + + /* sbDevicesPorInitTables */ + /* set smbus iobase */ + pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1); + + /* enable smbus controller interface */ + byte = pci_read_config8(dev, 0xd2); + byte |= (1 << 0); + pci_write_config8(dev, 0xd2, byte); + + /* KB2RstEnable */ + pci_write_config8(dev, 0x40, 0x44); + + /* Enable ISA Address 0-960K decoding */ + pci_write_config8(dev, 0x48, 0x0f); + + /* Enable ISA Address 0xC0000-0xDFFFF decode */ + pci_write_config8(dev, 0x49, 0xff); + + /* Enable decode cycles to IO C50, C51, C52 GPM controls. */ + byte = pci_read_config8(dev, 0x41); + byte &= 0x80; + byte |= 0x33; + pci_write_config8(dev, 0x41, byte); + + /* Legacy DMA Prefetch Enhancement, CIM masked it. */ + /* pci_write_config8(dev, 0x43, 0x1); */ + + /* Disabling Legacy USB Fast SMI# */ + byte = pci_read_config8(dev, 0x62); + byte |= 0x24; + pci_write_config8(dev, 0x62, byte); + + /* Features Enable */ + pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */ + + /* SerialIrq Control */ + pci_write_config8(dev, 0x69, 0x90); + + /* Test Mode, PCIB_SReset_En Mask is set. */ + pci_write_config8(dev, 0x6c, 0x20); + + /* IO Address Enable, CIM set 0x78 only and masked 0x79. */ + /*pci_write_config8(dev, 0x79, 0x4F); */ + pci_write_config8(dev, 0x78, 0xFF); + + /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */ + pci_write_config16(dev, 0x4, 0x0407); + + /* clear any lingering errors, so the transaction will run */ + outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT); + + /* IDE Device, BDF:0-20-1 */ + printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n"); + dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0); + /* Disable prefetch */ + byte = pci_read_config8(dev, 0x63); + byte |= 0x1; + pci_write_config8(dev, 0x63, byte); + + /* LPC Device, BDF:0-20-3 */ + printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n"); + dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0); + /* DMA enable */ + pci_write_config8(dev, 0x40, 0x04); + + /* IO Port Decode Enable */ + pci_write_config8(dev, 0x44, 0xFF); + pci_write_config8(dev, 0x45, 0xFF); + pci_write_config8(dev, 0x46, 0xC3); + pci_write_config8(dev, 0x47, 0xFF); + + /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports. + * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f), + * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65). + * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/ + byte = pci_read_config8(dev, 0x48); + byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */ + byte |= (1 << 3) | (1 << 4); /* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */ + byte |= 1 << 6; /* enable for RTC I/O range */ + pci_write_config8(dev, 0x48, byte); + pci_write_config8(dev, 0x49, 0xFF); + /* Enable 0x480-0x4bf, 0x4700-0x470B */ + byte = pci_read_config8(dev, 0x4A); + byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */ + pci_write_config8(dev, 0x4A, byte); + + /* Set LPC ROM size, it has been done in sb700_lpc_init(). + * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB; + * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB + * pci_write_config16(dev, 0x68, 0x000e) + * pci_write_config16(dev, 0x6c, 0xfff0);*/ + + /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */ + pci_write_config8(dev, 0x7C, 0x05); + + /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM, + */ + printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n"); + dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0); + + /* Arbiter enable. */ + pci_write_config8(dev, 0x43, 0xff); + + /* Set PCDMA request into hight priority list. */ + /* pci_write_config8(dev, 0x49, 0x1) */ ; + + pci_write_config8(dev, 0x40, 0x26); + + pci_write_config8(dev, 0x0d, 0x40); + pci_write_config8(dev, 0x1b, 0x40); + /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */ + pci_write_config8(dev, 0x50, 0x01); + + /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */ + printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n"); + dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0); + + /*PHY Global Control*/ + pci_write_config16(dev, 0x86, 0x2C00); +} + +/* sbPmioPorInitTable, Pre-initializing PMIO register space +* The power management (PM) block is resident in the PCI/LPC/ISA bridge. +* The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7. +* The index address is first programmed into IO reg 0xcd6. +* Read or write values are accessed through IO reg 0xcd7. +*/ +static void sb700_pmio_por_init(void) +{ + u8 byte; + + printk(BIOS_INFO, "sb700_pmio_por_init()\n"); + /* K8KbRstEn, KB_RST# control for K8 system. */ + byte = pmio_read(0x66); + byte |= 0x20; + pmio_write(0x66, byte); + + /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */ + if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) { + byte = pmio_read(0x65); + byte &= ~(1 << 7); + pmio_write(0x65, byte); + + byte = pmio_read(0x75); + byte &= 0xc0; + byte |= 0x05; + pmio_write(0x75, byte); + + byte = pmio_read(0x52); + byte &= 0xc0; + byte |= 0x08; + pmio_write(0x52, byte); + } else { + byte = pmio_read(0xD7); + byte |= 1 << 0; + pmio_write(0xD7, byte); + + byte = pmio_read(0x65); + byte |= 1 << 7; + pmio_write(0x65, byte); + + byte = pmio_read(0x75); + byte &= 0xc0; + byte |= 0x01; + pmio_write(0x75, byte); + + byte = pmio_read(0x52); + byte &= 0xc0; + byte |= 0x02; + pmio_write(0x52, byte); + + } + + /* Watch Dog Timer Control + * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure. + * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM. + */ + pmio_write(0x6c, 0xf0); + pmio_write(0x6d, 0x00); + pmio_write(0x6e, 0xc0); + pmio_write(0x6f, 0xfe); + + /* rpr2.15: Enabling Spread Spectrum */ + byte = pmio_read(0x42); + byte |= 1 << 7; + pmio_write(0x42, byte); + /* TODO: Check if it is necessary. IDE reset */ + byte = pmio_read(0xB2); + byte |= 1 << 0; + pmio_write(0xB2, byte); +} + +/* +* Add any south bridge setting. +*/ +static void sb700_pci_cfg(void) +{ + device_t dev; + u8 byte; + + /* SMBus Device, BDF:0-20-0 */ + dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); + /* Enable watchdog decode timer */ + byte = pci_read_config8(dev, 0x41); + byte |= (1 << 3); + pci_write_config8(dev, 0x41, byte); + + /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles) + * generated PCIRST#. */ + byte = pmio_read(0x65); + byte |= (1 << 4); + pmio_write(0x65, byte); + + /* IDE Device, BDF:0-20-1 */ + dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0); + /* Enable IDE Explicit prefetch, 0x63[0] clear */ + byte = pci_read_config8(dev, 0x63); + byte &= 0xfe; + pci_write_config8(dev, 0x63, byte); + + /* LPC Device, BDF:0-20-3 */ + /* The code below is ported from old chipset. It is not + * mentioned in RPR. But I keep them. The registers and the + * comments are compatible. */ + dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0); + /* Enabling LPC DMA function. */ + byte = pci_read_config8(dev, 0x40); + byte |= (1 << 2); + pci_write_config8(dev, 0x40, byte); + /* Disabling LPC TimeOut. 0x48[7] clear. */ + byte = pci_read_config8(dev, 0x48); + byte &= 0x7f; + pci_write_config8(dev, 0x48, byte); + /* Disabling LPC MSI Capability, 0x78[1] clear. */ + byte = pci_read_config8(dev, 0x78); + byte &= 0xfd; + pci_write_config8(dev, 0x78, byte); + + /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */ + dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0); + /* rpr7.12 SATA MSI and D3 Power State Capability. */ + byte = pci_read_config8(dev, 0x40); + byte |= 1 << 0; + pci_write_config8(dev, 0x40, byte); + if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) + pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */ + else + pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */ + byte &= ~(1 << 0); + pci_write_config8(dev, 0x40, byte); +} + +/* +*/ +static void sb700_por_init(void) +{ + /* sbDevicesPorInitTable + sbK8PorInitTable */ + sb700_devices_por_init(); + + /* sbPmioPorInitTable + sbK8PmioPorInitTable */ + sb700_pmio_por_init(); +} + +/* +* It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration. +*/ +static void sb700_before_pci_init(void) +{ + sb700_pci_cfg(); +} + +/* +* This function should be called after enable_sb700_smbus(). +*/ +static void sb700_early_setup(void) +{ + printk(BIOS_INFO, "sb700_early_setup()\n"); + sb700_por_init(); +} + +static int smbus_read_byte(u32 device, u32 address) +{ + return do_smbus_read_byte(SMBUS_IO_BASE, device, address); +} +#endif |