From e1a7a26f5e8bcc95d94ae9aec8df5b5226a77f56 Mon Sep 17 00:00:00 2001 From: Tim Wawrzynczak Date: Fri, 9 Oct 2020 17:07:45 -0600 Subject: lib/libpayload: Replace strapping_ids with new board configuration entry There are currently 3 different strapping ID entries in the coreboot table, which adds overhead. The new fw_config field is also desired in the coreboot table, which is another kind of strapping id. Therefore, this patch deprecates the 3 current strapping ID entries (board ID, RAM code, and SKU ID), and adds a new entry ("board_config") which provides board ID, RAM code, SKU ID, as well as FW_CONFIG together. Signed-off-by: Tim Wawrzynczak Change-Id: I1ecec847ee77b72233587c1ad7f124e2027470bf Reviewed-on: https://review.coreboot.org/c/coreboot/+/46605 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner Reviewed-by: Furquan Shaikh --- payloads/libpayload/include/coreboot_tables.h | 17 +++++++++----- payloads/libpayload/include/sysinfo.h | 9 +++++++- payloads/libpayload/libc/coreboot.c | 32 ++++++++------------------- 3 files changed, 28 insertions(+), 30 deletions(-) (limited to 'payloads/libpayload') diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h index bfdd21e692..64db83bbd4 100644 --- a/payloads/libpayload/include/coreboot_tables.h +++ b/payloads/libpayload/include/coreboot_tables.h @@ -80,6 +80,7 @@ enum { CB_TAG_TCPA_LOG = 0x0036, CB_TAG_FMAP = 0x0037, CB_TAG_SMMSTOREV2 = 0x0039, + CB_TAG_BOARD_CONFIG = 0x0040, CB_TAG_CMOS_OPTION_TABLE = 0x00c8, CB_TAG_OPTION = 0x00c9, CB_TAG_OPTION_ENUM = 0x00ca, @@ -260,12 +261,6 @@ struct cb_x86_rom_mtrr { uint32_t index; }; -struct cb_strapping_id { - uint32_t tag; - uint32_t size; - uint32_t id_code; -}; - struct cb_spi_flash { uint32_t tag; uint32_t size; @@ -317,6 +312,16 @@ struct cb_mmc_info { int32_t early_cmd1_status; }; +struct cb_board_config { + uint32_t tag; + uint32_t size; + + struct cbuint64 fw_config; + uint32_t board_id; + uint32_t ram_code; + uint32_t sku_id; +}; + #define CB_MAX_SERIALNO_LENGTH 32 struct cb_cmos_option_table { diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h index a3f61e7ffa..dd739abab4 100644 --- a/payloads/libpayload/include/sysinfo.h +++ b/payloads/libpayload/include/sysinfo.h @@ -107,11 +107,18 @@ struct sysinfo_t { uintptr_t mrc_cache; uintptr_t acpi_gnvs; -#define UNDEFINED_STRAPPING_ID (~0) +#define UNDEFINED_STRAPPING_ID (~0) +#define UNDEFINED_FW_CONFIG ~((uint64_t)0) u32 board_id; u32 ram_code; u32 sku_id; + /* + * A payload using this field is responsible for ensuring it checks its + * value against UNDEFINED_FW_CONFIG before using it. + */ + u64 fw_config; + uintptr_t wifi_calibration; uint64_t ramoops_buffer; uint32_t ramoops_buffer_size; diff --git a/payloads/libpayload/libc/coreboot.c b/payloads/libpayload/libc/coreboot.c index c48b6cffd8..b7d2a537b5 100644 --- a/payloads/libpayload/libc/coreboot.c +++ b/payloads/libpayload/libc/coreboot.c @@ -143,22 +143,13 @@ static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info) info->acpi_gnvs = get_cbmem_addr(ptr); } -static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info) +static void cb_parse_board_config(unsigned char *ptr, struct sysinfo_t *info) { - struct cb_strapping_id *const cbbid = (struct cb_strapping_id *)ptr; - info->board_id = cbbid->id_code; -} - -static void cb_parse_ram_code(unsigned char *ptr, struct sysinfo_t *info) -{ - struct cb_strapping_id *const ram_code = (struct cb_strapping_id *)ptr; - info->ram_code = ram_code->id_code; -} - -static void cb_parse_sku_id(unsigned char *ptr, struct sysinfo_t *info) -{ - struct cb_strapping_id *const sku_id = (struct cb_strapping_id *)ptr; - info->sku_id = sku_id->id_code; + struct cb_board_config *const config = (struct cb_board_config *)ptr; + info->fw_config = cb_unpack64(config->fw_config); + info->board_id = config->board_id; + info->ram_code = config->ram_code; + info->sku_id = config->sku_id; } #if CONFIG(LP_NVRAM) @@ -290,6 +281,7 @@ int cb_parse_header(void *addr, int len, struct sysinfo_t *info) info->board_id = UNDEFINED_STRAPPING_ID; info->ram_code = UNDEFINED_STRAPPING_ID; info->sku_id = UNDEFINED_STRAPPING_ID; + info->fw_config = UNDEFINED_FW_CONFIG; /* Now, walk the tables. */ ptr += header->header_bytes; @@ -381,14 +373,8 @@ int cb_parse_header(void *addr, int len, struct sysinfo_t *info) case CB_TAG_ACPI_GNVS: cb_parse_acpi_gnvs(ptr, info); break; - case CB_TAG_BOARD_ID: - cb_parse_board_id(ptr, info); - break; - case CB_TAG_RAM_CODE: - cb_parse_ram_code(ptr, info); - break; - case CB_TAG_SKU_ID: - cb_parse_sku_id(ptr, info); + case CB_TAG_BOARD_CONFIG: + cb_parse_board_config(ptr, info); break; case CB_TAG_WIFI_CALIBRATION: cb_parse_wifi_calibration(ptr, info); -- cgit v1.2.3