From 00a220877c8fc27f161017e68b67fce23117c0ad Mon Sep 17 00:00:00 2001 From: Marshall Dawson Date: Mon, 20 Jan 2020 23:05:31 -0700 Subject: [PATCH] soc/amd/picasso: Add FSP support for including AGESA AMD has rewritten AGESA (now at v9) for direct inclusion into UEFI build environments. Therefore, unlike the previous Arch2008 (a.k.a. v5), it can't be built without additional source, e.g. by combining with EDK II, and it has no entry points for easily building it into a legacy BIOS. AGESA in coreboot now relies on the FSP 2.0 framework published by Intel and uses the existing fsp2_0 driver. * Add fsp_memory_init() to romstage.c. Although Picasso comes out of reset with DRAM alive, this call is added to maximize compatibility and facilitate internal development. Future work may look at removing it. AGESA reports the memory map to coreboot via HOBs returned from fsp_memory_init(). * AGESA currently sets up MTRRs, as in most older generations. Take ownership back immediately before running ramstage. * Remove cbmem initialization, as the FSP driver handles this. * Add chipset_handle_reset() for compatibility. * Top of memory is determined by the FSP driver checking the HOBs passed from AGESA. Note that relying on the TOM register happens to be misleading when UMA is below 4GB. BUG=b:147042464 TEST=Boot trembyle to payload Change-Id: Iecb3a3f2599a8ccbc168b1d26a0271f51b71dcf0 Signed-off-by: Marshall Dawson Reviewed-on: https://review.coreboot.org/c/coreboot/+/34423 Reviewed-by: Furquan Shaikh Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/soc/amd/picasso/Kconfig | 11 +++++ src/soc/amd/picasso/Makefile.inc | 1 + src/soc/amd/picasso/chip.c | 3 ++ src/soc/amd/picasso/memmap.c | 48 ++++++++-------------- src/soc/amd/picasso/reset.c | 10 +++++ src/soc/amd/picasso/romstage.c | 69 ++++++++++++++++++++++++++++---- 6 files changed, 104 insertions(+), 38 deletions(-) diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig index 5996cc632e..c807ad4c7d 100644 --- a/src/soc/amd/picasso/Kconfig +++ b/src/soc/amd/picasso/Kconfig @@ -47,6 +47,10 @@ config CPU_SPECIFIC_OPTIONS select HAVE_SMI_HANDLER select SSE2 select RTC + select PLATFORM_USES_FSP2_0 + select FSP_USES_CB_STACK + select UDK_2017_BINDING + select HAVE_CF9_RESET config AMD_FP5 def_bool y if !AMD_FT5 @@ -225,6 +229,13 @@ config EARLYRAM_BSP_STACK_SIZE hex default 0x800 +config FSP_TEMP_RAM_SIZE + hex + depends on FSP_USES_CB_STACK + default 0x40000 + help + The amount of coreboot-allocated heap and stack usage by the FSP. + menu "PSP Configuration Options" config AMDFW_OUTSIDE_CBFS diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc index 40275ee4bc..71604d1bca 100644 --- a/src/soc/amd/picasso/Makefile.inc +++ b/src/soc/amd/picasso/Makefile.inc @@ -73,6 +73,7 @@ smm-y += psp.c CPPFLAGS_common += -I$(src)/soc/amd/picasso CPPFLAGS_common += -I$(src)/soc/amd/picasso/include CPPFLAGS_common += -I$(src)/soc/amd/picasso/acpi +CPPFLAGS_common += -I$(src)/vendorcode/amd/fsp/picasso # ROMSIG Normally At ROMBASE + 0x20000 # Overridden by CONFIG_AMD_FWM_POSITION_INDEX diff --git a/src/soc/amd/picasso/chip.c b/src/soc/amd/picasso/chip.c index 201afb40dd..2ab946236b 100644 --- a/src/soc/amd/picasso/chip.c +++ b/src/soc/amd/picasso/chip.c @@ -13,6 +13,7 @@ #include #include #include "chip.h" +#include /* Supplied by i2c.c */ extern struct device_operations picasso_i2c_mmio_ops; @@ -99,6 +100,8 @@ static void enable_dev(struct device *dev) static void soc_init(void *chip_info) { + fsp_silicon_init(acpi_is_wakeup_s3()); + southbridge_init(chip_info); setup_bsp_ramtop(); } diff --git a/src/soc/amd/picasso/memmap.c b/src/soc/amd/picasso/memmap.c index c6fd11874a..7b504afc75 100644 --- a/src/soc/amd/picasso/memmap.c +++ b/src/soc/amd/picasso/memmap.c @@ -6,37 +6,11 @@ #include #include #include -#include #include #include -#include -#include -#include -#include -#include -#include - -void *cbmem_top_chipset(void) -{ - msr_t tom = rdmsr(TOP_MEM); - - if (!tom.lo) - return 0; - - /* 8MB alignment to keep MTRR usage low */ - return (void *)ALIGN_DOWN(restore_top_of_low_cacheable() - - CONFIG_SMM_TSEG_SIZE, 8*MiB); -} - -static uintptr_t smm_region_start(void) -{ - return (uintptr_t)cbmem_top(); -} - -static size_t smm_region_size(void) -{ - return CONFIG_SMM_TSEG_SIZE; -} +#include +#include +#include /* * For data stored in TSEG, ensure TValid is clear so R/W access can reach @@ -63,9 +37,21 @@ static void clear_tvalid(void) void smm_region(uintptr_t *start, size_t *size) { static int once; + struct range_entry tseg; + int status; - *start = smm_region_start(); - *size = smm_region_size(); + *start = 0; + *size = 0; + + status = fsp_find_range_hob(&tseg, AMD_FSP_TSEG_HOB_GUID.b); + + if (status < 0) { + printk(BIOS_ERR, "Error: unable to find TSEG HOB\n"); + return; + } + + *start = (uintptr_t)range_entry_base(&tseg); + *size = range_entry_size(&tseg); if (!once) { clear_tvalid(); diff --git a/src/soc/amd/picasso/reset.c b/src/soc/amd/picasso/reset.c index dda08de544..81a4cabc8e 100644 --- a/src/soc/amd/picasso/reset.c +++ b/src/soc/amd/picasso/reset.c @@ -9,6 +9,8 @@ #include #include #include +#include +#include void set_warm_reset_flag(void) { @@ -43,3 +45,11 @@ void do_board_reset(void) /* TODO: Would a warm_reset() suffice? */ do_cold_reset(); } + +void chipset_handle_reset(uint32_t status) +{ + printk(BIOS_ERR, "Error: unexpected call to %s(0x%08x). Doing cold reset.\n", + __func__, status); + assert(0); + do_cold_reset(); +} diff --git a/src/soc/amd/picasso/romstage.c b/src/soc/amd/picasso/romstage.c index bbbc891c5a..329429ef48 100644 --- a/src/soc/amd/picasso/romstage.c +++ b/src/soc/amd/picasso/romstage.c @@ -4,8 +4,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -13,15 +15,69 @@ #include #include #include +#include +#include "chip.h" +#include void __weak mainboard_romstage_entry_s3(int s3_resume) { /* By default, don't do anything */ } +/* TODO(b/155426691): Make FSP AGESA leave MTRRs alone */ +static void clear_agesa_mtrrs(void) +{ + disable_cache(); + + picasso_restore_mtrrs(); + + enable_cache(); +} + +void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) +{ + FSP_M_CONFIG *mcfg = &mupd->FspmConfig; + const config_t *config = config_of_soc(); + + mcfg->pci_express_base_addr = CONFIG_MMCONF_BASE_ADDRESS; + mcfg->tseg_size = CONFIG_SMM_TSEG_SIZE; + mcfg->serial_port_base = uart_platform_base(CONFIG_UART_FOR_CONSOLE); + mcfg->serial_port_use_mmio = CONFIG(DRIVERS_UART_8250MEM); + mcfg->serial_port_stride = CONFIG(DRIVERS_UART_8250MEM_32) ? 4 : 1; + mcfg->serial_port_baudrate = get_uart_baudrate(); + mcfg->serial_port_refclk = uart_platform_refclk(); + + mcfg->system_config = config->system_config; + + if ((config->slow_ppt_limit) && + (config->fast_ppt_limit) && + (config->slow_ppt_time_constant) && + (config->stapm_time_constant)) { + mcfg->slow_ppt_limit = config->slow_ppt_limit; + mcfg->fast_ppt_limit = config->fast_ppt_limit; + mcfg->slow_ppt_time_constant = config->slow_ppt_time_constant; + mcfg->stapm_time_constant = config->stapm_time_constant; + } + + mcfg->sustained_power_limit = config->sustained_power_limit; + mcfg->prochot_l_deassertion_ramp_time = config->prochot_l_deassertion_ramp_time; + mcfg->thermctl_limit = config->thermctl_limit; + mcfg->psi0_current_limit = config->psi0_current_limit; + mcfg->psi0_soc_current_limit = config->psi0_soc_current_limit; + mcfg->vddcr_soc_voltage_margin = config->vddcr_soc_voltage_margin; + mcfg->vddcr_vdd_voltage_margin = config->vddcr_vdd_voltage_margin; + mcfg->vrm_maximum_current_limit = config->vrm_maximum_current_limit; + mcfg->vrm_soc_maximum_current_limit = config->vrm_soc_maximum_current_limit; + mcfg->vrm_current_limit = config->vrm_current_limit; + mcfg->vrm_soc_current_limit = config->vrm_soc_current_limit; + mcfg->sb_tsi_alert_comparator_mode_en = config->sb_tsi_alert_comparator_mode_en; + mcfg->core_dldo_bypass = config->core_dldo_bypass; + mcfg->min_soc_vid_offset = config->min_soc_vid_offset; + mcfg->aclk_dpm0_freq_400MHz = config->aclk_dpm0_freq_400MHz; +} + asmlinkage void car_stage_entry(void) { - uintptr_t top_of_mem; int s3_resume; post_code(0x40); @@ -37,16 +93,15 @@ asmlinkage void car_stage_entry(void) printk(BIOS_DEBUG, "Family_Model: %08x\n", val); post_code(0x43); - top_of_mem = ALIGN_DOWN(rdmsr(TOP_MEM).lo, 8 * MiB); - backup_top_of_low_cacheable(top_of_mem); + picasso_save_mtrrs(); post_code(0x44); - if (cbmem_recovery(s3_resume)) - printk(BIOS_CRIT, "Failed to recover cbmem\n"); - if (romstage_handoff_init(s3_resume)) - printk(BIOS_ERR, "Failed to set romstage handoff data\n"); + fsp_memory_init(s3_resume); post_code(0x45); + clear_agesa_mtrrs(); + + post_code(0x46); run_ramstage(); post_code(0x50); /* Should never see this post code. */