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Diffstat (limited to 'src/mainboard/google/stout/romstage.c')
| -rw-r--r-- | src/mainboard/google/stout/romstage.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/src/mainboard/google/stout/romstage.c b/src/mainboard/google/stout/romstage.c new file mode 100644 index 0000000000..2f4e1a7a76 --- /dev/null +++ b/src/mainboard/google/stout/romstage.c @@ -0,0 +1,360 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2010 coresystems GmbH + * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. + * + * 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 <stdint.h> +#include <string.h> +#include <lib.h> +#include <timestamp.h> +#include <arch/byteorder.h> +#include <arch/io.h> +#include <arch/romcc_io.h> +#include <device/pci_def.h> +#include <device/pnp_def.h> +#include <cpu/x86/lapic.h> +#include <pc80/mc146818rtc.h> +#include <cbmem.h> +#include <console/console.h> +#include "northbridge/intel/sandybridge/sandybridge.h" +#include "northbridge/intel/sandybridge/raminit.h" +#include "southbridge/intel/bd82x6x/pch.h" +#include "southbridge/intel/bd82x6x/gpio.h" +#include <arch/cpu.h> +#include <cpu/x86/bist.h> +#include <cpu/x86/msr.h> +#include "gpio.h" +#if CONFIG_CHROMEOS +#include <vendorcode/google/chromeos/chromeos.h> +#endif +#include <cbfs.h> +#include <ec/quanta/it8518/ec.h> +#include "ec.h" +#include "onboard.h" + +static void pch_enable_lpc(void) +{ + /* + * Enable: + * EC Decode Range Port62/66 + * SuperIO Port2E/2F + * PS/2 Keyboard/Mouse Port60/64 + * FDD Port3F0h-3F5h and Port3F7h + */ + pci_write_config16(PCH_LPC_DEV, LPC_EN, KBC_LPC_EN | MC_LPC_EN | + CNF1_LPC_EN | FDD_LPC_EN); + + /* Stout EC Decode Range Port68/6C */ + pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC, (0x68 | 0x40001)); +} + +static void rcba_config(void) +{ + u32 reg32; + + /* + * GFX INTA -> PIRQA (MSI) + * D20IP_XHCI XHCI INTA -> PIRQD (MSI) + * D26IP_E2P EHCI #2 INTA -> PIRQF + * D27IP_ZIP HDA INTA -> PIRQA (MSI) + * D28IP_P2IP WLAN INTA -> PIRQD + * D28IP_P3IP Card Reader INTB -> PIRQE + * D28IP_P6IP LAN INTC -> PIRQB + * D29IP_E1P EHCI #1 INTA -> PIRQD + * D31IP_SIP SATA INTA -> PIRQB (MSI) + * D31IP_SMIP SMBUS INTB -> PIRQH + */ + + /* Device interrupt pin register (board specific) */ + RCBA32(D31IP) = (NOINT << D31IP_TTIP) | (NOINT << D31IP_SIP2) | + (INTB << D31IP_SMIP) | (INTA << D31IP_SIP); + RCBA32(D30IP) = (NOINT << D30IP_PIP); + RCBA32(D29IP) = (INTA << D29IP_E1P); + RCBA32(D28IP) = (NOINT << D28IP_P1IP) | (INTA << D28IP_P2IP) | + (INTB << D28IP_P3IP) | (NOINT << D28IP_P4IP) | + (NOINT << D28IP_P5IP) | (INTC << D28IP_P6IP) | + (NOINT << D28IP_P7IP) | (NOINT << D28IP_P8IP); + RCBA32(D27IP) = (INTA << D27IP_ZIP); + RCBA32(D26IP) = (INTA << D26IP_E2P); + RCBA32(D25IP) = (NOINT << D25IP_LIP); + RCBA32(D22IP) = (NOINT << D22IP_MEI1IP); + RCBA32(D20IP) = (INTA << D20IP_XHCIIP); + + /* Device interrupt route registers */ + DIR_ROUTE(D31IR, PIRQB, PIRQH, PIRQA, PIRQC); + DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQF, PIRQG); + DIR_ROUTE(D28IR, PIRQD, PIRQE, PIRQB, PIRQC); + DIR_ROUTE(D27IR, PIRQA, PIRQB, PIRQC, PIRQD); + DIR_ROUTE(D26IR, PIRQF, PIRQB, PIRQC, PIRQD); + DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD); + DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD); + DIR_ROUTE(D20IR, PIRQD, PIRQE, PIRQF, PIRQG); + + /* Enable IOAPIC (generic) */ + RCBA16(OIC) = 0x0100; + /* PCH BWG says to read back the IOAPIC enable register */ + (void) RCBA16(OIC); + + /* Disable unused devices (board specific) */ + reg32 = RCBA32(FD); + reg32 |= PCH_DISABLE_ALWAYS; + /* Disable PCI bridge so MRC does not probe this bus */ + reg32 |= PCH_DISABLE_P2P; + RCBA32(FD) = reg32; +} + +// FIXME, this function is generic code that should go to sb/... or +// nb/../early_init.c +static void early_pch_init(void) +{ + // Nothing to do for stout +} + + /* + * The Stout EC needs to be reset to RW mode. It is important that + * the RTC_PWR_STS is not set until ramstage EC init. + */ +static void early_ec_init(void) +{ + u8 ec_status = ec_read(EC_STATUS_REG); + int rec_mode = get_recovery_mode_switch(); + + if (((ec_status & 0x3) == EC_IN_RO_MODE) || + ((ec_status & 0x3) == EC_IN_RECOVERY_MODE)) { + + printk(BIOS_DEBUG, "EC Cold Boot Detected\n"); + if (!rec_mode) { + /* + * Tell EC to exit RO mode + */ + printk(BIOS_DEBUG, "EC will exit RO mode and boot normally\n"); + ec_write_cmd(EC_CMD_EXIT_BOOT_BLOCK); + die("wait for ec to reset"); + } + } else { + printk(BIOS_DEBUG, "EC Warm Boot Detected\n"); + ec_write_cmd(EC_CMD_WARM_RESET); + } +} + +void main(unsigned long bist) +{ + int boot_mode = 0; + int cbmem_was_initted; + u32 pm1_cnt; + u16 pm1_sts; + +#if CONFIG_COLLECT_TIMESTAMPS + tsc_t start_romstage_time; + tsc_t before_dram_time; + tsc_t after_dram_time; + tsc_t base_time = { + .lo = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xdc), + .hi = pci_read_config32(PCI_DEV(0, 0x1f, 2), 0xd0) + }; +#endif + struct pei_data pei_data = { + pei_version: PEI_VERSION, + mchbar: DEFAULT_MCHBAR, + dmibar: DEFAULT_DMIBAR, + epbar: DEFAULT_EPBAR, + pciexbar: CONFIG_MMCONF_BASE_ADDRESS, + smbusbar: SMBUS_IO_BASE, + wdbbar: 0x4000000, + wdbsize: 0x1000, + hpet_address: CONFIG_HPET_ADDRESS, + rcba: DEFAULT_RCBABASE, + pmbase: DEFAULT_PMBASE, + gpiobase: DEFAULT_GPIOBASE, + thermalbase: 0xfed08000, + system_type: 0, // 0 Mobile, 1 Desktop/Server + tseg_size: CONFIG_SMM_TSEG_SIZE, + spd_addresses: { 0xA0, 0x00,0xA4,0x00 }, + ts_addresses: { 0x00, 0x00, 0x00, 0x00 }, + ec_present: 1, + // 0 = leave channel enabled + // 1 = disable dimm 0 on channel + // 2 = disable dimm 1 on channel + // 3 = disable dimm 0+1 on channel + dimm_channel0_disabled: 2, + dimm_channel1_disabled: 2, + max_ddr3_freq: 1600, + usb_port_config: { + /* enabled usb oc pin length */ + { 1, 0, 0x0040 }, /* P0: USB 3.0 1 (OC0) */ + { 1, 0, 0x0040 }, /* P1: USB 3.0 2 (OC0) */ + { 0, 1, 0x0000 }, /* P2: Empty */ + { 1, 1, 0x0040 }, /* P3: Camera (no OC) */ + { 1, 1, 0x0040 }, /* P4: WLAN (no OC) */ + { 1, 1, 0x0040 }, /* P5: WWAN (no OC) */ + { 0, 1, 0x0000 }, /* P6: Empty */ + { 0, 1, 0x0000 }, /* P7: Empty */ + { 0, 5, 0x0000 }, /* P8: Empty */ + { 1, 4, 0x0040 }, /* P9: USB 2.0 (AUO4) (OC4) */ + { 0, 5, 0x0000 }, /* P10: Empty */ + { 0, 5, 0x0000 }, /* P11: Empty */ + { 0, 5, 0x0000 }, /* P12: Empty */ + { 1, 5, 0x0040 }, /* P13: Bluetooth (no OC) */ + }, + usb3: { + mode: XHCI_MODE, + hs_port_switch_mask: XHCI_PORTS, + preboot_support: XHCI_PREBOOT, + xhci_streams: XHCI_STREAMS, + }, + }; + +#if CONFIG_COLLECT_TIMESTAMPS + start_romstage_time = rdtsc(); +#endif + + if (bist == 0) + enable_lapic(); + + pch_enable_lpc(); + + /* Enable GPIOs */ + pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE|1); + pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10); + setup_pch_gpios(&stout_gpio_map); + + /* Initialize console device(s) */ + console_init(); + + /* Halt if there was a built in self test failure */ + report_bist_failure(bist); + + if (MCHBAR16(SSKPD) == 0xCAFE) { + printk(BIOS_DEBUG, "soft reset detected\n"); + boot_mode = 1; + + /* System is not happy after keyboard reset... */ + printk(BIOS_DEBUG, "Issuing CF9 warm reset\n"); + outb(0x6, 0xcf9); + hlt(); + } + + + /* Perform some early chipset initialization required + * before RAM initialization can work + */ + sandybridge_early_initialization(SANDYBRIDGE_MOBILE); + printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n"); + + /* Check PM1_STS[15] to see if we are waking from Sx */ + pm1_sts = inw(DEFAULT_PMBASE + PM1_STS); + + /* Read PM1_CNT[12:10] to determine which Sx state */ + pm1_cnt = inl(DEFAULT_PMBASE + PM1_CNT); + + if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 10) & 7) == 5) { +#if CONFIG_HAVE_ACPI_RESUME + printk(BIOS_DEBUG, "Resume from S3 detected.\n"); + boot_mode = 2; + /* Clear SLP_TYPE. This will break stage2 but + * we care for that when we get there. + */ + outl(pm1_cnt & ~(7 << 10), DEFAULT_PMBASE + PM1_CNT); +#else + printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n"); +#endif + } + + /* Do ec reset as early as possible, but skip it on S3 resume */ + if (boot_mode < 2) + early_ec_init(); + + post_code(0x38); + /* Enable SPD ROMs and DDR-III DRAM */ + enable_smbus(); + + /* Prepare USB controller early in S3 resume */ + if (boot_mode == 2) + enable_usb_bar(); + + post_code(0x39); + + post_code(0x3a); + pei_data.boot_mode = boot_mode; +#if CONFIG_COLLECT_TIMESTAMPS + before_dram_time = rdtsc(); +#endif + sdram_initialize(&pei_data); + +#if CONFIG_COLLECT_TIMESTAMPS + after_dram_time = rdtsc(); +#endif + post_code(0x3b); + /* Perform some initialization that must run before stage2 */ + early_pch_init(); + post_code(0x3c); + + rcba_config(); + post_code(0x3d); + + quick_ram_check(); + post_code(0x3e); + + MCHBAR16(SSKPD) = 0xCAFE; +#if CONFIG_EARLY_CBMEM_INIT + cbmem_was_initted = !cbmem_initialize(); +#else + cbmem_was_initted = cbmem_reinit((uint64_t) (get_top_of_ram() + - HIGH_MEMORY_SIZE)); +#endif + +#if CONFIG_HAVE_ACPI_RESUME + /* If there is no high memory area, we didn't boot before, so + * this is not a resume. In that case we just create the cbmem toc. + */ + + *(u32 *)CBMEM_BOOT_MODE = 0; + *(u32 *)CBMEM_RESUME_BACKUP = 0; + + if ((boot_mode == 2) && cbmem_was_initted) { + void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME); + if (resume_backup_memory) { + *(u32 *)CBMEM_BOOT_MODE = boot_mode; + *(u32 *)CBMEM_RESUME_BACKUP = (u32)resume_backup_memory; + } + /* Magic for S3 resume */ + pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d); + } else if (boot_mode == 2) { + /* Failed S3 resume, reset to come up cleanly */ + outb(0x6, 0xcf9); + hlt(); + } else { + pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafebabe); + } +#endif + post_code(0x3f); +#if CONFIG_CHROMEOS + init_chromeos(boot_mode); +#endif +#if CONFIG_COLLECT_TIMESTAMPS + timestamp_init(base_time); + timestamp_add(TS_START_ROMSTAGE, start_romstage_time ); + timestamp_add(TS_BEFORE_INITRAM, before_dram_time ); + timestamp_add(TS_AFTER_INITRAM, after_dram_time ); + timestamp_add_now(TS_END_ROMSTAGE); +#endif +#if CONFIG_CONSOLE_CBMEM + /* Keep this the last thing this function does. */ + cbmemc_reinit(); +#endif +} |