diff options
Diffstat (limited to 'src/soc/intel/skylake/romstage/romstage_fsp20.c')
| -rw-r--r-- | src/soc/intel/skylake/romstage/romstage_fsp20.c | 133 |
1 files changed, 124 insertions, 9 deletions
diff --git a/src/soc/intel/skylake/romstage/romstage_fsp20.c b/src/soc/intel/skylake/romstage/romstage_fsp20.c index 8a15a69a2362..8e083234a075 100644 --- a/src/soc/intel/skylake/romstage/romstage_fsp20.c +++ b/src/soc/intel/skylake/romstage/romstage_fsp20.c @@ -13,32 +13,147 @@ * 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 <cbmem.h> +#include <chip.h> #include <console/console.h> +#include <device/pci_def.h> #include <fsp/util.h> +#include <fsp/memmap.h> +#include <soc/pci_devs.h> +#include <soc/pm.h> #include <soc/romstage.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 asmlinkage void *car_stage_c_entry(void) { - bool s3wake = false; + bool s3wake; + struct postcar_frame pcf; + uintptr_t top_of_ram; + struct chipset_power_state *ps; + console_init(); - /* TODO: Add fill_powerstate and determine sleep state. */ + + /* 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); - return NULL; + pmc_set_disb(); + + 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 soc_memory_init_params(struct FSP_M_CONFIG *m_cfg) + +static void soc_memory_init_params(FSP_M_CONFIG *m_cfg) { - /* TODO: Fill SoC specific Memory init Params */ -} + const struct device *dev; + const struct soc_intel_skylake_config *config; + int i; + uint32_t mask = 0; -void platform_fsp_memory_init_params_cb(struct FSPM_UPD *mupd){ + /* 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; + for (i = 0; i < ARRAY_SIZE(config->PcieRpEnable); i++) { + if (config->PcieRpEnable[i]) + mask |= (1<<i); + } + m_cfg->PcieRpEnableMask = mask; +} - struct FSP_M_CONFIG *m_cfg = &mupd->FspmConfig; +void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd) +{ + 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); + + /* Reserve enough memory under TOLUD to save CBMEM header */ + mupd->FspmArchUpd.BootLoaderTolumSize = cbmem_overhead_size(); + } -__attribute__((weak)) void mainboard_memory_init_params(struct FSPM_UPD *mupd) +__attribute__((weak)) void mainboard_memory_init_params(FSPM_UPD *mupd) { /* Do nothing */ } |