| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 Google 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. |
| */ |
| |
| #include <console/console.h> |
| #include <console/usb.h> |
| #include <bootmode.h> |
| #include <cf9_reset.h> |
| #include <string.h> |
| #include <device/pci_ops.h> |
| #include <arch/cpu.h> |
| #include <cbmem.h> |
| #include <arch/cbfs.h> |
| #include <cbfs.h> |
| #include <ip_checksum.h> |
| #include <pc80/mc146818rtc.h> |
| #include <device/pci_def.h> |
| #include <lib.h> |
| #include <mrc_cache.h> |
| #include <timestamp.h> |
| #include "raminit.h" |
| #include "pei_data.h" |
| #include "sandybridge.h" |
| #include "chip.h" |
| #include <security/vboot/vboot_common.h> |
| #include <southbridge/intel/bd82x6x/pch.h> |
| |
| /* Management Engine is in the southbridge */ |
| #include <southbridge/intel/bd82x6x/me.h> |
| |
| /* |
| * MRC scrambler seed offsets should be reserved in |
| * mainboard cmos.layout and not covered by checksum. |
| */ |
| #if CONFIG(USE_OPTION_TABLE) |
| #include "option_table.h" |
| #define CMOS_OFFSET_MRC_SEED (CMOS_VSTART_mrc_scrambler_seed >> 3) |
| #define CMOS_OFFSET_MRC_SEED_S3 (CMOS_VSTART_mrc_scrambler_seed_s3 >> 3) |
| #define CMOS_OFFSET_MRC_SEED_CHK (CMOS_VSTART_mrc_scrambler_seed_chk >> 3) |
| #else |
| #define CMOS_OFFSET_MRC_SEED 152 |
| #define CMOS_OFFSET_MRC_SEED_S3 156 |
| #define CMOS_OFFSET_MRC_SEED_CHK 160 |
| #endif |
| |
| #define MRC_CACHE_VERSION 0 |
| |
| void save_mrc_data(struct pei_data *pei_data) |
| { |
| u16 c1, c2, checksum; |
| |
| /* Save the MRC S3 restore data to cbmem */ |
| mrc_cache_stash_data(MRC_TRAINING_DATA, MRC_CACHE_VERSION, |
| pei_data->mrc_output, |
| pei_data->mrc_output_len); |
| |
| /* Save the MRC seed values to CMOS */ |
| cmos_write32(CMOS_OFFSET_MRC_SEED, pei_data->scrambler_seed); |
| printk(BIOS_DEBUG, "Save scrambler seed 0x%08x to CMOS 0x%02x\n", |
| pei_data->scrambler_seed, CMOS_OFFSET_MRC_SEED); |
| |
| cmos_write32(CMOS_OFFSET_MRC_SEED_S3, pei_data->scrambler_seed_s3); |
| printk(BIOS_DEBUG, "Save s3 scrambler seed 0x%08x to CMOS 0x%02x\n", |
| pei_data->scrambler_seed_s3, CMOS_OFFSET_MRC_SEED_S3); |
| |
| /* Save a simple checksum of the seed values */ |
| c1 = compute_ip_checksum((u8*)&pei_data->scrambler_seed, |
| sizeof(u32)); |
| c2 = compute_ip_checksum((u8*)&pei_data->scrambler_seed_s3, |
| sizeof(u32)); |
| checksum = add_ip_checksums(sizeof(u32), c1, c2); |
| |
| cmos_write(checksum & 0xff, CMOS_OFFSET_MRC_SEED_CHK); |
| cmos_write((checksum >> 8) & 0xff, CMOS_OFFSET_MRC_SEED_CHK+1); |
| } |
| |
| static void prepare_mrc_cache(struct pei_data *pei_data) |
| { |
| struct region_device rdev; |
| u16 c1, c2, checksum, seed_checksum; |
| |
| // preset just in case there is an error |
| pei_data->mrc_input = NULL; |
| pei_data->mrc_input_len = 0; |
| |
| /* Read scrambler seeds from CMOS */ |
| pei_data->scrambler_seed = cmos_read32(CMOS_OFFSET_MRC_SEED); |
| printk(BIOS_DEBUG, "Read scrambler seed 0x%08x from CMOS 0x%02x\n", |
| pei_data->scrambler_seed, CMOS_OFFSET_MRC_SEED); |
| |
| pei_data->scrambler_seed_s3 = cmos_read32(CMOS_OFFSET_MRC_SEED_S3); |
| printk(BIOS_DEBUG, "Read S3 scrambler seed 0x%08x from CMOS 0x%02x\n", |
| pei_data->scrambler_seed_s3, CMOS_OFFSET_MRC_SEED_S3); |
| |
| /* Compute seed checksum and compare */ |
| c1 = compute_ip_checksum((u8*)&pei_data->scrambler_seed, |
| sizeof(u32)); |
| c2 = compute_ip_checksum((u8*)&pei_data->scrambler_seed_s3, |
| sizeof(u32)); |
| checksum = add_ip_checksums(sizeof(u32), c1, c2); |
| |
| seed_checksum = cmos_read(CMOS_OFFSET_MRC_SEED_CHK); |
| seed_checksum |= cmos_read(CMOS_OFFSET_MRC_SEED_CHK+1) << 8; |
| |
| if (checksum != seed_checksum) { |
| printk(BIOS_ERR, "%s: invalid seed checksum\n", __func__); |
| pei_data->scrambler_seed = 0; |
| pei_data->scrambler_seed_s3 = 0; |
| return; |
| } |
| |
| if (mrc_cache_get_current(MRC_TRAINING_DATA, MRC_CACHE_VERSION, |
| &rdev)) { |
| /* error message printed in find_current_mrc_cache */ |
| return; |
| } |
| |
| pei_data->mrc_input = rdev_mmap_full(&rdev); |
| pei_data->mrc_input_len = region_device_sz(&rdev); |
| |
| printk(BIOS_DEBUG, "%s: at %p, size %x\n", |
| __func__, pei_data->mrc_input, pei_data->mrc_input_len); |
| } |
| |
| static const char *ecc_decoder[] = { |
| "inactive", |
| "active on IO", |
| "disabled on IO", |
| "active" |
| }; |
| |
| /* |
| * Dump in the log memory controller configuration as read from the memory |
| * controller registers. |
| */ |
| static void report_memory_config(void) |
| { |
| u32 addr_decoder_common, addr_decode_ch[2]; |
| int i; |
| |
| addr_decoder_common = MCHBAR32(0x5000); |
| addr_decode_ch[0] = MCHBAR32(0x5004); |
| addr_decode_ch[1] = MCHBAR32(0x5008); |
| |
| printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n", |
| (MCHBAR32(0x5e04) * 13333 * 2 + 50)/100); |
| printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n", |
| addr_decoder_common & 3, |
| (addr_decoder_common >> 2) & 3, |
| (addr_decoder_common >> 4) & 3); |
| |
| for (i = 0; i < ARRAY_SIZE(addr_decode_ch); i++) { |
| u32 ch_conf = addr_decode_ch[i]; |
| printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n", |
| i, ch_conf); |
| printk(BIOS_DEBUG, " ECC %s\n", |
| ecc_decoder[(ch_conf >> 24) & 3]); |
| printk(BIOS_DEBUG, " enhanced interleave mode %s\n", |
| ((ch_conf >> 22) & 1) ? "on" : "off"); |
| printk(BIOS_DEBUG, " rank interleave %s\n", |
| ((ch_conf >> 21) & 1) ? "on" : "off"); |
| printk(BIOS_DEBUG, " DIMMA %d MB width x%d %s rank%s\n", |
| ((ch_conf >> 0) & 0xff) * 256, |
| ((ch_conf >> 19) & 1) ? 16 : 8, |
| ((ch_conf >> 17) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? "" : ", selected"); |
| printk(BIOS_DEBUG, " DIMMB %d MB width x%d %s rank%s\n", |
| ((ch_conf >> 8) & 0xff) * 256, |
| ((ch_conf >> 20) & 1) ? 16 : 8, |
| ((ch_conf >> 18) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? ", selected" : ""); |
| } |
| } |
| |
| /** |
| * Find PEI executable in coreboot filesystem and execute it. |
| * |
| * @param pei_data: configuration data for UEFI PEI reference code |
| */ |
| void sdram_initialize(struct pei_data *pei_data) |
| { |
| struct sys_info sysinfo; |
| int (*entry) (struct pei_data *pei_data) __attribute__((regparm(1))); |
| |
| /* Wait for ME to be ready */ |
| intel_early_me_init(); |
| intel_early_me_uma_size(); |
| |
| printk(BIOS_DEBUG, "Starting UEFI PEI System Agent\n"); |
| |
| memset(&sysinfo, 0, sizeof(sysinfo)); |
| |
| sysinfo.boot_path = pei_data->boot_mode; |
| |
| /* |
| * Do not pass MRC data in for recovery mode boot, |
| * Always pass it in for S3 resume. |
| */ |
| if (!vboot_recovery_mode_enabled() || pei_data->boot_mode == 2) |
| prepare_mrc_cache(pei_data); |
| |
| /* If MRC data is not found we cannot continue S3 resume. */ |
| if (pei_data->boot_mode == 2 && !pei_data->mrc_input) { |
| printk(BIOS_DEBUG, "Giving up in sdram_initialize: No MRC data\n"); |
| system_reset(); |
| } |
| |
| /* Pass console handler in pei_data */ |
| pei_data->tx_byte = do_putchar; |
| |
| /* Locate and call UEFI System Agent binary. */ |
| entry = cbfs_boot_map_with_leak("mrc.bin", CBFS_TYPE_MRC, NULL); |
| if (entry) { |
| int rv; |
| rv = entry (pei_data); |
| if (rv) { |
| switch (rv) { |
| case -1: |
| printk(BIOS_ERR, "PEI version mismatch.\n"); |
| break; |
| case -2: |
| printk(BIOS_ERR, "Invalid memory frequency.\n"); |
| break; |
| default: |
| printk(BIOS_ERR, "MRC returned %x.\n", rv); |
| } |
| die_with_post_code(POST_INVALID_VENDOR_BINARY, |
| "Nonzero MRC return value.\n"); |
| } |
| } else { |
| die("UEFI PEI System Agent not found.\n"); |
| } |
| |
| /* mrc.bin reconfigures USB, so reinit it to have debug */ |
| if (CONFIG(USBDEBUG_IN_PRE_RAM)) |
| usbdebug_hw_init(true); |
| |
| /* For reference print the System Agent version |
| * after executing the UEFI PEI stage. |
| */ |
| u32 version = MCHBAR32(0x5034); |
| printk(BIOS_DEBUG, "System Agent Version %d.%d.%d Build %d\n", |
| version >> 24, (version >> 16) & 0xff, |
| (version >> 8) & 0xff, version & 0xff); |
| |
| /* Send ME init done for SandyBridge here. This is done |
| * inside the SystemAgent binary on IvyBridge. */ |
| if (BASE_REV_SNB == |
| (pci_read_config16(PCI_CPU_DEVICE, PCI_DEVICE_ID) & BASE_REV_MASK)) |
| intel_early_me_init_done(ME_INIT_STATUS_SUCCESS); |
| else |
| intel_early_me_status(); |
| |
| report_memory_config(); |
| } |
| |
| /* These are the location and structure of MRC_VAR data in CAR. |
| The CAR region looks like this: |
| +------------------+ -> DCACHE_RAM_BASE |
| | | |
| | | |
| | COREBOOT STACK | |
| | | |
| | | |
| +------------------+ -> DCACHE_RAM_BASE + DCACHE_RAM_SIZE |
| | | |
| | MRC HEAP | |
| | size = 0x5000 | |
| | | |
| +------------------+ |
| | | |
| | MRC VAR | |
| | size = 0x4000 | |
| | | |
| +------------------+ -> DACHE_RAM_BASE + DACHE_RAM_SIZE |
| + DCACHE_RAM_MRC_VAR_SIZE |
| |
| */ |
| #define DCACHE_RAM_MRC_VAR_BASE \ |
| (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE + \ |
| CONFIG_DCACHE_RAM_MRC_VAR_SIZE - 0x4000) |
| |
| struct mrc_var_data { |
| u32 acpi_timer_flag; |
| u32 pool_used; |
| u32 pool_base; |
| u32 tx_byte; |
| u32 reserved[4]; |
| } __packed; |
| |
| static void northbridge_fill_pei_data(struct pei_data *pei_data) |
| { |
| pei_data->mchbar = (uintptr_t)DEFAULT_MCHBAR; |
| pei_data->dmibar = (uintptr_t)DEFAULT_DMIBAR; |
| pei_data->epbar = DEFAULT_EPBAR; |
| pei_data->pciexbar = CONFIG_MMCONF_BASE_ADDRESS; |
| pei_data->hpet_address = CONFIG_HPET_ADDRESS; |
| pei_data->thermalbase = 0xfed08000; |
| pei_data->system_type = get_platform_type() == PLATFORM_MOBILE ? 0 : 1; |
| pei_data->tseg_size = CONFIG_SMM_TSEG_SIZE; |
| |
| if ((cpu_get_cpuid() & 0xffff0) == 0x306a0) { |
| const struct device *dev = pcidev_on_root(1, 0); |
| pei_data->pcie_init = dev && dev->enabled; |
| } else { |
| pei_data->pcie_init = 0; |
| } |
| } |
| |
| static void southbridge_fill_pei_data(struct pei_data *pei_data) |
| { |
| const struct device *dev = pcidev_on_root(0x19, 0); |
| |
| pei_data->smbusbar = SMBUS_IO_BASE; |
| pei_data->wdbbar = 0x4000000; |
| pei_data->wdbsize = 0x1000; |
| pei_data->rcba = (uintptr_t)DEFAULT_RCBABASE; |
| pei_data->pmbase = DEFAULT_PMBASE; |
| pei_data->gpiobase = DEFAULT_GPIOBASE; |
| pei_data->gbe_enable = dev && dev->enabled; |
| } |
| |
| static void devicetree_fill_pei_data(struct pei_data *pei_data) |
| { |
| const struct northbridge_intel_sandybridge_config *cfg; |
| |
| const struct device *dev = pcidev_on_root(0, 0); |
| if (!dev || !dev->chip_info) |
| return; |
| |
| cfg = dev->chip_info; |
| |
| switch (cfg->max_mem_clock_mhz) { |
| /* MRC only supports fixed numbers of frequencies */ |
| default: |
| printk(BIOS_WARNING, "RAMINIT: Limiting DDR3 clock to 800 Mhz\n"); |
| /* fallthrough */ |
| case 400: |
| pei_data->max_ddr3_freq = 800; |
| break; |
| case 533: |
| pei_data->max_ddr3_freq = 1066; |
| break; |
| case 666: |
| pei_data->max_ddr3_freq = 1333; |
| break; |
| case 800: |
| pei_data->max_ddr3_freq = 1600; |
| break; |
| |
| } |
| |
| memcpy(pei_data->spd_addresses, cfg->spd_addresses, |
| sizeof(pei_data->spd_addresses)); |
| |
| memcpy(pei_data->ts_addresses, cfg->ts_addresses, |
| sizeof(pei_data->ts_addresses)); |
| |
| pei_data->ec_present = cfg->ec_present; |
| pei_data->ddr3lv_support = cfg->ddr3lv_support; |
| |
| pei_data->nmode = cfg->nmode; |
| pei_data->ddr_refresh_rate_config = cfg->ddr_refresh_rate_config; |
| |
| memcpy(pei_data->usb_port_config, cfg->usb_port_config, |
| sizeof(pei_data->usb_port_config)); |
| |
| pei_data->usb3.mode = cfg->usb3.mode; |
| pei_data->usb3.hs_port_switch_mask = cfg->usb3.hs_port_switch_mask; |
| pei_data->usb3.preboot_support = cfg->usb3.preboot_support; |
| pei_data->usb3.xhci_streams = cfg->usb3.xhci_streams; |
| } |
| |
| void perform_raminit(int s3resume) |
| { |
| int cbmem_was_initted; |
| struct pei_data pei_data; |
| struct mrc_var_data *mrc_var; |
| |
| /* Prepare USB controller early in S3 resume */ |
| if (!mainboard_should_reset_usb(s3resume)) |
| enable_usb_bar(); |
| |
| memset(&pei_data, 0, sizeof(pei_data)); |
| pei_data.pei_version = PEI_VERSION, |
| |
| northbridge_fill_pei_data(&pei_data); |
| southbridge_fill_pei_data(&pei_data); |
| devicetree_fill_pei_data(&pei_data); |
| mainboard_fill_pei_data(&pei_data); |
| |
| post_code(0x3a); |
| |
| /* Fill after mainboard_fill_pei_data as it might provide spd_data */ |
| pei_data.dimm_channel0_disabled = |
| (!pei_data.spd_addresses[0] && !pei_data.spd_data[0][0]) + |
| (!pei_data.spd_addresses[1] && !pei_data.spd_data[1][0]) * 2; |
| |
| pei_data.dimm_channel1_disabled = |
| (!pei_data.spd_addresses[2] && !pei_data.spd_data[2][0]) + |
| (!pei_data.spd_addresses[3] && !pei_data.spd_data[3][0]) * 2; |
| |
| /* Fix spd_data. MRC only uses spd_data[0] and ignores the other */ |
| for (size_t i = 1; i < ARRAY_SIZE(pei_data.spd_data); i++) { |
| if (pei_data.spd_data[i][0] && !pei_data.spd_data[0][0]) { |
| memcpy(pei_data.spd_data[0], pei_data.spd_data[i], |
| sizeof(pei_data.spd_data[0])); |
| } else if (pei_data.spd_data[i][0] && pei_data.spd_data[0][0]) { |
| if (memcmp(pei_data.spd_data[i], pei_data.spd_data[0], |
| sizeof(pei_data.spd_data[0])) != 0) |
| die("Onboard SPDs must match each other"); |
| } |
| } |
| |
| pei_data.boot_mode = s3resume ? 2 : 0; |
| timestamp_add_now(TS_BEFORE_INITRAM); |
| sdram_initialize(&pei_data); |
| |
| mrc_var = (void *)DCACHE_RAM_MRC_VAR_BASE; |
| /* Sanity check mrc_var location by verifying a known field. */ |
| if (mrc_var->tx_byte == (uintptr_t)pei_data.tx_byte) { |
| printk(BIOS_DEBUG, "MRC_VAR pool occupied [%08x,%08x]\n", |
| mrc_var->pool_base, |
| mrc_var->pool_base + mrc_var->pool_used); |
| } else { |
| printk(BIOS_ERR, "Could not parse MRC_VAR data\n"); |
| hexdump32(BIOS_ERR, mrc_var, sizeof(*mrc_var)/sizeof(u32)); |
| } |
| |
| cbmem_was_initted = !cbmem_recovery(s3resume); |
| if (!s3resume) |
| save_mrc_data(&pei_data); |
| |
| if (s3resume && !cbmem_was_initted) { |
| /* Failed S3 resume, reset to come up cleanly */ |
| system_reset(); |
| } |
| } |