| /* |
| * 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 |
| } |