| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2016 Intel Corp. |
| * |
| * 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 <arch/cpu.h> |
| #include <arch/early_variables.h> |
| #include <arch/io.h> |
| #include <arch/symbols.h> |
| #include <assert.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/msr.h> |
| #include <cbmem.h> |
| #include <chip.h> |
| #include <console/console.h> |
| #include <device/pci_def.h> |
| #include <fsp/util.h> |
| #include <fsp/memmap.h> |
| #include <memory_info.h> |
| #include <soc/intel/common/smbios.h> |
| #include <soc/msr.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pm.h> |
| #include <soc/romstage.h> |
| #include <string.h> |
| #include <timestamp.h> |
| #include <vboot/vboot_common.h> |
| |
| /* |
| * Romstage needs some stack for decompressing ramstage images, since the lzma |
| * lib keeps its state on the stack during romstage. |
| */ |
| #define ROMSTAGE_RAM_STACK_SIZE 0x5000 |
| |
| #define FSP_SMBIOS_MEMORY_INFO_GUID \ |
| { \ |
| 0xd4, 0x71, 0x20, 0x9b, 0x54, 0xb0, 0x0c, 0x4e, \ |
| 0x8d, 0x09, 0x11, 0xcf, 0x8b, 0x9f, 0x03, 0x23 \ |
| } |
| |
| /* Save the DIMM information for SMBIOS table 17 */ |
| static void save_dimm_info(void) |
| { |
| int channel, dimm, dimm_max, index; |
| size_t hob_size; |
| const CONTROLLER_INFO *ctrlr_info; |
| const CHANNEL_INFO *channel_info; |
| const DIMM_INFO *src_dimm; |
| struct dimm_info *dest_dimm; |
| struct memory_info *mem_info; |
| const MEMORY_INFO_DATA_HOB *memory_info_hob; |
| const uint8_t smbios_memory_info_guid[16] = FSP_SMBIOS_MEMORY_INFO_GUID; |
| |
| /* Locate the memory info HOB, presence validated by raminit */ |
| memory_info_hob = |
| fsp_find_extension_hob_by_guid(smbios_memory_info_guid, |
| &hob_size); |
| if (memory_info_hob == NULL) { |
| printk(BIOS_ERR, "SMBIOS MEMORY_INFO_DATA_HOB not found\n"); |
| return; |
| } |
| |
| /* |
| * Allocate CBMEM area for DIMM information used to populate SMBIOS |
| * table 17 |
| */ |
| mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info)); |
| if (mem_info == NULL) { |
| printk(BIOS_ERR, "CBMEM entry for DIMM info missing\n"); |
| return; |
| } |
| memset(mem_info, 0, sizeof(*mem_info)); |
| |
| /* Describe the first N DIMMs in the system */ |
| index = 0; |
| dimm_max = ARRAY_SIZE(mem_info->dimm); |
| ctrlr_info = &memory_info_hob->Controller[0]; |
| for (channel = 0; channel < ctrlr_info->ChannelCount; channel++) { |
| if (index >= dimm_max) |
| break; |
| channel_info = &ctrlr_info->Channel[channel]; |
| for (dimm = 0; dimm < channel_info->DimmCount; dimm++) { |
| if (index >= dimm_max) |
| break; |
| src_dimm = &channel_info->Dimm[dimm]; |
| dest_dimm = &mem_info->dimm[index]; |
| |
| if (!src_dimm->DimmCapacity) |
| continue; |
| |
| /* Populate the DIMM information */ |
| dimm_info_fill(dest_dimm, |
| src_dimm->DimmCapacity, |
| memory_info_hob->DdrType, |
| memory_info_hob->Frequency, |
| channel_info->ChannelId, |
| src_dimm->DimmId, |
| (const char *)src_dimm->ModulePartNum, |
| sizeof(src_dimm->ModulePartNum), |
| memory_info_hob->DataWidth); |
| index++; |
| } |
| } |
| mem_info->dimm_cnt = index; |
| printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt); |
| } |
| |
| asmlinkage void *car_stage_c_entry(void) |
| { |
| bool s3wake; |
| struct postcar_frame pcf; |
| uintptr_t top_of_ram; |
| struct chipset_power_state *ps; |
| |
| console_init(); |
| |
| /* Program MCHBAR, DMIBAR, GDXBAR and EDRAMBAR */ |
| systemagent_early_init(); |
| |
| ps = fill_power_state(); |
| timestamp_add_now(TS_START_ROMSTAGE); |
| s3wake = ps->prev_sleep_state == ACPI_S3; |
| fsp_memory_init(s3wake); |
| pmc_set_disb(); |
| if (!s3wake) |
| save_dimm_info(); |
| if (postcar_frame_init(&pcf, ROMSTAGE_RAM_STACK_SIZE)) |
| die("Unable to initialize postcar frame.\n"); |
| |
| /* |
| * We need to make sure ramstage will be run cached. At this |
| * point exact location of ramstage in cbmem is not known. |
| * Instruct postcar to cache 16 megs under cbmem top which is |
| * a safe bet to cover ramstage. |
| */ |
| top_of_ram = (uintptr_t) cbmem_top(); |
| printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram); |
| top_of_ram -= 16*MiB; |
| postcar_frame_add_mtrr(&pcf, top_of_ram, 16*MiB, MTRR_TYPE_WRBACK); |
| |
| if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) { |
| void *smm_base; |
| size_t smm_size; |
| uintptr_t tseg_base; |
| |
| /* |
| * Cache the TSEG region at the top of ram. This region is |
| * not restricted to SMM mode until SMM has been relocated. |
| * By setting the region to cacheable it provides faster access |
| * when relocating the SMM handler as well as using the TSEG |
| * region for other purposes. |
| */ |
| smm_region(&smm_base, &smm_size); |
| tseg_base = (uintptr_t)smm_base; |
| postcar_frame_add_mtrr(&pcf, tseg_base, smm_size, |
| MTRR_TYPE_WRBACK); |
| } |
| |
| /* Cache the ROM as WP just below 4GiB. */ |
| postcar_frame_add_mtrr(&pcf, 0xFFFFFFFF - CONFIG_ROM_SIZE + 1, |
| CONFIG_ROM_SIZE, MTRR_TYPE_WRPROT); |
| |
| return postcar_commit_mtrrs(&pcf); |
| } |
| |
| static void cpu_flex_override(FSP_M_CONFIG *m_cfg) |
| { |
| msr_t flex_ratio; |
| m_cfg->CpuRatioOverride = 1; |
| /* |
| * Set cpuratio to that value set in bootblock, This will ensure FSPM |
| * knows the intended flex ratio. |
| */ |
| flex_ratio = rdmsr(MSR_FLEX_RATIO); |
| m_cfg->CpuRatio = (flex_ratio.lo >> 8) & 0xff; |
| } |
| |
| static void soc_memory_init_params(FSP_M_CONFIG *m_cfg) |
| { |
| const struct device *dev; |
| const struct soc_intel_skylake_config *config; |
| int i; |
| uint32_t mask = 0; |
| |
| /* Set the parameters for MemoryInit */ |
| dev = dev_find_slot(0, PCI_DEVFN(PCH_DEV_SLOT_LPC, 0)); |
| config = dev->chip_info; |
| /* |
| * Set IGD stolen size to 64MB. The FBC hardware for skylake does not |
| * have access to the bios_reserved range so it always assumes 8MB is |
| * used and so the kernel will avoid the last 8MB of the stolen window. |
| * With the default stolen size of 32MB(-8MB) there is not enough space |
| * for FBC to work with a high resolution panel. |
| */ |
| m_cfg->IgdDvmt50PreAlloc = 2; |
| m_cfg->MmioSize = 0x800; /* 2GB in MB */ |
| m_cfg->TsegSize = CONFIG_SMM_TSEG_SIZE; |
| m_cfg->IedSize = CONFIG_IED_REGION_SIZE; |
| m_cfg->ProbelessTrace = config->ProbelessTrace; |
| m_cfg->EnableTraceHub = config->EnableTraceHub; |
| if (vboot_recovery_mode_enabled()) |
| m_cfg->SaGv = 0; /* Disable SaGv in recovery mode. */ |
| else |
| m_cfg->SaGv = config->SaGv; |
| m_cfg->UserBd = BOARD_TYPE_ULT_ULX; |
| m_cfg->RMT = config->Rmt; |
| m_cfg->DdrFreqLimit = config->DdrFreqLimit; |
| m_cfg->VmxEnable = config->VmxEnable; |
| m_cfg->PrmrrSize = config->PrmrrSize; |
| for (i = 0; i < ARRAY_SIZE(config->PcieRpEnable); i++) { |
| if (config->PcieRpEnable[i]) |
| mask |= (1<<i); |
| } |
| m_cfg->PcieRpEnableMask = mask; |
| |
| cpu_flex_override(m_cfg); |
| } |
| |
| void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) |
| { |
| FSP_M_CONFIG *m_cfg = &mupd->FspmConfig; |
| FSP_M_TEST_CONFIG *m_t_cfg = &mupd->FspmTestConfig; |
| |
| soc_memory_init_params(m_cfg); |
| |
| /* Enable DMI Virtual Channel for ME */ |
| m_t_cfg->DmiVcm = 0x01; |
| |
| /* Enable Sending DID to ME */ |
| m_t_cfg->SendDidMsg = 0x01; |
| m_t_cfg->DidInitStat = 0x01; |
| |
| mainboard_memory_init_params(mupd); |
| } |
| |
| void soc_update_memory_params_for_mma(FSP_M_CONFIG *memory_cfg, |
| struct mma_config_param *mma_cfg) |
| { |
| /* Boot media is memory mapped for Skylake and Kabylake (SPI). */ |
| assert(IS_ENABLED(CONFIG_BOOT_DEVICE_MEMORY_MAPPED)); |
| |
| memory_cfg->MmaTestContentPtr = |
| (uintptr_t) rdev_mmap_full(&mma_cfg->test_content); |
| memory_cfg->MmaTestContentSize = |
| region_device_sz(&mma_cfg->test_content); |
| memory_cfg->MmaTestConfigPtr = |
| (uintptr_t) rdev_mmap_full(&mma_cfg->test_param); |
| memory_cfg->MmaTestConfigSize = |
| region_device_sz(&mma_cfg->test_param); |
| memory_cfg->MrcFastBoot = 0x00; |
| memory_cfg->SaGv = 0x02; |
| } |
| |
| __attribute__((weak)) void mainboard_memory_init_params(FSPM_UPD *mupd) |
| { |
| /* Do nothing */ |
| } |