| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2010 coresystems GmbH |
| * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| * Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. |
| * |
| * 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. |
| */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| #include <lib.h> |
| #include <timestamp.h> |
| #include <arch/cpu.h> |
| #include <arch/io.h> |
| #include <device/pci_def.h> |
| #include <device/pnp_def.h> |
| #include <cpu/x86/lapic.h> |
| #include <cpu/x86/msr.h> |
| #include <pc80/mc146818rtc.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <console/usb.h> |
| #include <halt.h> |
| #include <program_loading.h> |
| #include <cf9_reset.h> |
| #include <drivers/intel/fsp1_0/fsp_util.h> |
| #include <northbridge/intel/fsp_sandybridge/northbridge.h> |
| #include <northbridge/intel/fsp_sandybridge/raminit.h> |
| #include <superio/winbond/wpcd376i/wpcd376i.h> |
| #include <superio/intel/i8900/i8900.h> |
| #include "gpio.h" |
| #include "me.h" |
| #include "pch.h" |
| #include "romstage.h" |
| |
| static void pch_enable_lpc(void) |
| { |
| pci_devfn_t dev = PCH_LPC_DEV; |
| |
| /* Set COM1/COM2 decode range */ |
| pci_write_config16(dev, LPC_IO_DEC, 0x0010); |
| |
| /* Enable Board specific settings */ |
| uint16_t lpc_config = get_lpc_setting(); |
| pci_write_config16(dev, LPC_EN, lpc_config); |
| } |
| |
| static void rcba_config(void) |
| { |
| uint32_t reg32; |
| uint32_t fd_mask = 0, fd2_mask = 0; |
| |
| /* Enable IOAPIC (generic) */ |
| RCBA16(OIC) = 0x0100; |
| /* PCH BWG says to read back the IOAPIC enable register */ |
| (void) RCBA16(OIC); |
| |
| /* Board specific settings */ |
| get_func_disables(&fd_mask, &fd2_mask); |
| reg32 = RCBA32(FD); |
| printk(BIOS_DEBUG, "FD original value: 0x%08lx\n",(unsigned long)reg32); |
| |
| reg32 |= fd_mask; |
| |
| printk(BIOS_DEBUG, "FD updated value: 0x%08lx\n",(unsigned long)reg32); |
| RCBA32(FD) = reg32; |
| |
| reg32 = RCBA32(FD2); |
| printk(BIOS_DEBUG, "FD2 original value: 0x%08lx\n",(unsigned long)reg32); |
| |
| reg32 |= fd2_mask; |
| |
| printk(BIOS_DEBUG, "FD2 updated value: 0x%08lx\n",(unsigned long)reg32); |
| RCBA32(FD2) = reg32; |
| } |
| |
| void main(FSP_INFO_HEADER *fsp_info_header) |
| { |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) |
| int32_t boot_mode = 0; |
| #endif |
| uint32_t pm1_cnt; |
| uint16_t pm1_sts; |
| |
| post_code(0x40); |
| |
| timestamp_init(get_initial_timestamp()); |
| timestamp_add_now(TS_START_ROMSTAGE); |
| |
| 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); |
| |
| /* Call into mainboard. */ |
| early_mainboard_romstage_entry(); |
| |
| console_init(); |
| |
| post_code(0x41); |
| |
| post_code(0x42); |
| sandybridge_sb_early_initialization(); |
| |
| post_code(0x43); |
| sandybridge_early_initialization(SANDYBRIDGE_MOBILE); |
| printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n"); |
| |
| post_code(0x44); |
| /* Wait for ME to be ready */ |
| intel_early_me_status(); |
| intel_early_me_init(); |
| #if IS_ENABLED(CONFIG_GFXUMA) |
| intel_early_me_uma_size(); |
| #endif |
| post_code(0x45); |
| /* 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); |
| post_code(0x46); |
| if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 10) & 7) == 5) { |
| #if IS_ENABLED(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 |
| } |
| |
| post_code(0x48); |
| |
| timestamp_add_now(TS_BEFORE_INITRAM); |
| |
| /* |
| * Call early init to initialize memory and chipset. This function returns |
| * to the romstage_main_continue function with a pointer to the HOB |
| * structure. |
| */ |
| printk(BIOS_DEBUG, "Starting the Intel FSP (early_init)\n"); |
| fsp_early_init(fsp_info_header); |
| die("Uh Oh! fsp_early_init should not return here.\n"); |
| } |
| |
| /******************************************************************************* |
| * The FSP early_init function returns to this function. |
| * Memory is setup and the stack is set by the FSP. |
| ******************************************************************************/ |
| void romstage_main_continue(EFI_STATUS status, VOID *HobListPtr) { |
| int32_t cbmem_was_initted; |
| void *cbmem_hob_ptr; |
| |
| timestamp_add_now(TS_AFTER_INITRAM); |
| |
| post_code(0x49); |
| |
| /* For reference print FSP version */ |
| uint32_t version = MCHBAR32(0x5034); |
| printk(BIOS_DEBUG, "FSP Version %d.%d.%d Build %d\n", |
| version >> 24 , (version >> 16) & 0xff, |
| (version >> 8) & 0xff, version & 0xff); |
| printk(BIOS_DEBUG, "FSP Status: 0x%0x\n", (uint32_t)status); |
| |
| intel_early_me_init_done(ME_INIT_STATUS_SUCCESS); |
| |
| report_memory_config(); |
| |
| post_code(0x4b); |
| |
| late_mainboard_romstage_entry(); |
| |
| early_pch_init(); |
| post_code(0x4c); |
| |
| rcba_config(); |
| post_code(0x4d); |
| |
| quick_ram_check(); |
| post_code(0x4e); |
| |
| cbmem_was_initted = !cbmem_recovery(0); |
| |
| if (cbmem_was_initted) { |
| system_reset(); |
| } |
| |
| /* Save the HOB pointer in CBMEM to be used in ramstage. */ |
| cbmem_hob_ptr = cbmem_add(CBMEM_ID_HOB_POINTER, sizeof(HobListPtr)); |
| if (cbmem_hob_ptr == NULL) |
| die("Could not allocate cbmem for HOB pointer"); |
| *(uint32_t*)cbmem_hob_ptr = (uint32_t)HobListPtr; |
| post_code(0x4f); |
| |
| run_ramstage(); |
| } |
| |
| uint64_t get_initial_timestamp(void) |
| { |
| return (uint64_t) pci_read_config32(PCI_DEV(0, 0x1f, 2), 0xd0) << 4; |
| } |