diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse_lite.c | 153 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/cse_layout.h | 11 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/cse_lite.h | 117 |
3 files changed, 166 insertions, 115 deletions
diff --git a/src/soc/intel/common/block/cse/cse_lite.c b/src/soc/intel/common/block/cse/cse_lite.c index 6e5b451c12..4e3a44661d 100644 --- a/src/soc/intel/common/block/cse/cse_lite.c +++ b/src/soc/intel/common/block/cse/cse_lite.c @@ -12,6 +12,7 @@ #include <intelbasecode/debug_feature.h> #include <intelblocks/cse.h> #include <intelblocks/cse_layout.h> +#include <intelblocks/cse_lite.h> #include <intelblocks/spi.h> #include <security/vboot/misc.h> #include <security/vboot/vboot_common.h> @@ -20,121 +21,6 @@ #include "cse_lite_cmos.h" -#define BPDT_HEADER_SZ sizeof(struct bpdt_header) -#define BPDT_ENTRY_SZ sizeof(struct bpdt_entry) -#define SUBPART_HEADER_SZ sizeof(struct subpart_hdr) -#define SUBPART_ENTRY_SZ sizeof(struct subpart_entry) -#define SUBPART_MANIFEST_HDR_SZ sizeof(struct subpart_entry_manifest_header) - -/* Converts bp index to boot partition string */ -#define GET_BP_STR(bp_index) (bp_index ? "RW" : "RO") - -/* CSE RW boot partition signature */ -#define CSE_RW_SIGNATURE 0x000055aa - -/* CSE RW boot partition signature size */ -#define CSE_RW_SIGN_SIZE sizeof(uint32_t) - -/* - * CSE Firmware supports 3 boot partitions. For CSE Lite SKU, only 2 boot partitions are - * used and 3rd boot partition is set to BP_STATUS_PARTITION_NOT_PRESENT. - * CSE Lite SKU Image Layout: - * +------------+ +----+------+----+ +-----+------+-----+ - * | CSE REGION | => | RO | DATA | RW | => | BP1 | DATA | BP2 | - * +------------+ +----+------+----+ +-----+------+-----+ - */ -#define CSE_MAX_BOOT_PARTITIONS 3 - -/* CSE Lite SKU's valid bootable partition identifiers */ -enum boot_partition_id { - /* RO(BP1) contains recovery/minimal boot firmware */ - RO = 0, - - /* RW(BP2) contains fully functional CSE firmware */ - RW = 1 -}; - -/* - * Boot partition status. - * The status is returned in response to MKHI_BUP_COMMON_GET_BOOT_PARTITION_INFO cmd. - */ -enum bp_status { - /* This value is returned when a partition has no errors */ - BP_STATUS_SUCCESS = 0, - - /* - * This value is returned when a partition should be present based on layout, but it is - * not valid. - */ - BP_STATUS_GENERAL_FAILURE = 1, - - /* This value is returned when a partition is not present per initial image layout */ - BP_STATUS_PARTITION_NOT_PRESENT = 2, - - /* - * This value is returned when unexpected issues are detected in CSE Data area - * and CSE TCB-SVN downgrade scenario. - */ - BP_STATUS_DATA_FAILURE = 3, -}; - -/* - * Boot Partition Info Flags - * The flags are returned in response to MKHI_BUP_COMMON_GET_BOOT_PARTITION_INFO cmd. - */ -enum bp_info_flags { - /* Redundancy Enabled: It indicates CSE supports RO(BP1) and RW(BP2) regions */ - BP_INFO_REDUNDANCY_EN = 1 << 0, - - /* It indicates RO(BP1) supports Minimal Recovery Mode */ - BP_INFO_MIN_RECOV_MODE_EN = 1 << 1, - - /* - * Read-only Config Enabled: It indicates HW protection to CSE RO region is enabled. - * The option is relevant only if the BP_INFO_MIN_RECOV_MODE_EN flag is enabled. - */ - BP_INFO_READ_ONLY_CFG = 1 << 2, -}; - -/* CSE boot partition entry info */ -struct cse_bp_entry { - /* Boot partition version */ - struct fw_version fw_ver; - - /* Boot partition status */ - uint32_t status; - - /* Starting offset of the partition within CSE region */ - uint32_t start_offset; - - /* Ending offset of the partition within CSE region */ - uint32_t end_offset; - uint8_t reserved[12]; -} __packed; - -/* CSE boot partition info */ -struct cse_bp_info { - /* Number of boot partitions */ - uint8_t total_number_of_bp; - - /* Current boot partition */ - uint8_t current_bp; - - /* Next boot partition */ - uint8_t next_bp; - - /* Boot Partition Info Flags */ - uint8_t flags; - - /* Boot Partition Entry Info */ - struct cse_bp_entry bp_entries[CSE_MAX_BOOT_PARTITIONS]; -} __packed; - -struct get_bp_info_rsp { - struct mkhi_hdr hdr; - struct cse_bp_info bp_info; -} __packed; - static struct get_bp_info_rsp cse_bp_info_rsp; enum cse_fw_state { @@ -331,6 +217,9 @@ static void cse_store_rw_fw_version(void) /* Function to copy PRERAM CSE specific info to pertinent CBMEM. */ static void preram_cse_info_sync_to_cbmem(int is_recovery) { + if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD)) + return; + if (vboot_recovery_mode_enabled() || !CONFIG(SOC_INTEL_STORE_CSE_FW_VERSION)) return; @@ -517,6 +406,9 @@ static enum cb_err cse_get_bp_info(void) void cse_fill_bp_info(void) { + if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD)) + return; + if (vboot_recovery_mode_enabled()) return; @@ -527,6 +419,9 @@ void cse_fill_bp_info(void) /* Function to copy PRERAM CSE BP info to pertinent CBMEM. */ static void preram_cse_bp_info_sync_to_cbmem(int is_recovery) { + if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD)) + return; + if (vboot_recovery_mode_enabled()) return; @@ -1585,6 +1480,9 @@ static bool is_ish_version_valid(struct cse_fw_ish_version_info *version) */ static void store_ish_version(void) { + if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD)) + return; + if (!ENV_RAMSTAGE) return; @@ -1644,6 +1542,31 @@ static void store_ish_version(void) } } +static void preram_create_cbmem_cse_info(int is_recovery) +{ + if (!CONFIG(SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD)) + return; + + /* + * CBMEM_ID_CSE_INFO will be used by the payload to - + * 1. Avoid reading ISH firmware version on consecutive boots. + * 2. Track state of PSR data during CSE downgrade operation. + */ + void *temp = cbmem_add(CBMEM_ID_CSE_INFO, sizeof(struct cse_specific_info)); + if (!temp) + printk(BIOS_ERR, "cse_lite: Couldn't create CBMEM_ID_CSE_INFO\n"); + + /* + * CBMEM_ID_CSE_BP_INFO will be used by the payload to avoid reading CSE + * boot partition information on consecutive boots. + */ + temp = cbmem_add(CBMEM_ID_CSE_BP_INFO, sizeof(struct get_bp_info_rsp)); + if (!temp) + printk(BIOS_ERR, "cse_lite: Couldn't create CBMEM_ID_CSE_BP_INFO\n"); +} + +CBMEM_CREATION_HOOK(preram_create_cbmem_cse_info); + static void ramstage_cse_misc_ops(void *unused) { if (acpi_get_sleep_type() == ACPI_S3) diff --git a/src/soc/intel/common/block/include/intelblocks/cse_layout.h b/src/soc/intel/common/block/include/intelblocks/cse_layout.h index 4c88cc52d3..f5ff632d6d 100644 --- a/src/soc/intel/common/block/include/intelblocks/cse_layout.h +++ b/src/soc/intel/common/block/include/intelblocks/cse_layout.h @@ -1,6 +1,9 @@ /* BPDT version 1.7 support */ /* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef SOC_INTEL_COMMON_CSE_LAYOUT_H +#define SOC_INTEL_COMMON_CSE_LAYOUT_H + #include <sys/types.h> enum bpdt_entry_type { @@ -103,3 +106,11 @@ struct subpart_entry_manifest_header { uint16_t hotfix; } binary_version; } __packed; + +#define BPDT_HEADER_SZ sizeof(struct bpdt_header) +#define BPDT_ENTRY_SZ sizeof(struct bpdt_entry) +#define SUBPART_HEADER_SZ sizeof(struct subpart_hdr) +#define SUBPART_ENTRY_SZ sizeof(struct subpart_entry) +#define SUBPART_MANIFEST_HDR_SZ sizeof(struct subpart_entry_manifest_header) + +#endif // SOC_INTEL_COMMON_CSE_LAYOUT_H diff --git a/src/soc/intel/common/block/include/intelblocks/cse_lite.h b/src/soc/intel/common/block/include/intelblocks/cse_lite.h new file mode 100644 index 0000000000..46666b6d55 --- /dev/null +++ b/src/soc/intel/common/block/include/intelblocks/cse_lite.h @@ -0,0 +1,117 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_INTEL_COMMON_CSE_LITE_H +#define SOC_INTEL_COMMON_CSE_LITE_H + +#include <sys/types.h> + +/* Converts bp index to boot partition string */ +#define GET_BP_STR(bp_index) (bp_index ? "RW" : "RO") + +/* CSE RW boot partition signature */ +#define CSE_RW_SIGNATURE 0x000055aa + +/* CSE RW boot partition signature size */ +#define CSE_RW_SIGN_SIZE sizeof(uint32_t) + +/* + * CSE Firmware supports 3 boot partitions. For CSE Lite SKU, only 2 boot partitions are + * used and 3rd boot partition is set to BP_STATUS_PARTITION_NOT_PRESENT. + * CSE Lite SKU Image Layout: + * +------------+ +----+------+----+ +-----+------+-----+ + * | CSE REGION | => | RO | DATA | RW | => | BP1 | DATA | BP2 | + * +------------+ +----+------+----+ +-----+------+-----+ + */ +#define CSE_MAX_BOOT_PARTITIONS 3 + +/* CSE Lite SKU's valid bootable partition identifiers */ +enum boot_partition_id { + /* RO(BP1) contains recovery/minimal boot firmware */ + RO = 0, + + /* RW(BP2) contains fully functional CSE firmware */ + RW = 1 +}; + +/* + * Boot partition status. + * The status is returned in response to MKHI_BUP_COMMON_GET_BOOT_PARTITION_INFO cmd. + */ +enum bp_status { + /* This value is returned when a partition has no errors */ + BP_STATUS_SUCCESS = 0, + + /* + * This value is returned when a partition should be present based on layout, but it is + * not valid. + */ + BP_STATUS_GENERAL_FAILURE = 1, + + /* This value is returned when a partition is not present per initial image layout */ + BP_STATUS_PARTITION_NOT_PRESENT = 2, + + /* + * This value is returned when unexpected issues are detected in CSE Data area + * and CSE TCB-SVN downgrade scenario. + */ + BP_STATUS_DATA_FAILURE = 3, +}; + +/* + * Boot Partition Info Flags + * The flags are returned in response to MKHI_BUP_COMMON_GET_BOOT_PARTITION_INFO cmd. + */ +enum bp_info_flags { + /* Redundancy Enabled: It indicates CSE supports RO(BP1) and RW(BP2) regions */ + BP_INFO_REDUNDANCY_EN = 1 << 0, + + /* It indicates RO(BP1) supports Minimal Recovery Mode */ + BP_INFO_MIN_RECOV_MODE_EN = 1 << 1, + + /* + * Read-only Config Enabled: It indicates HW protection to CSE RO region is enabled. + * The option is relevant only if the BP_INFO_MIN_RECOV_MODE_EN flag is enabled. + */ + BP_INFO_READ_ONLY_CFG = 1 << 2, +}; + +/* CSE boot partition entry info */ +struct cse_bp_entry { + /* Boot partition version */ + struct fw_version fw_ver; + + /* Boot partition status */ + uint32_t status; + + /* Starting offset of the partition within CSE region */ + uint32_t start_offset; + + /* Ending offset of the partition within CSE region */ + uint32_t end_offset; + uint8_t reserved[12]; +} __packed; + +/* CSE boot partition info */ +struct cse_bp_info { + /* Number of boot partitions */ + uint8_t total_number_of_bp; + + /* Current boot partition */ + uint8_t current_bp; + + /* Next boot partition */ + uint8_t next_bp; + + /* Boot Partition Info Flags */ + uint8_t flags; + + /* Boot Partition Entry Info */ + struct cse_bp_entry bp_entries[CSE_MAX_BOOT_PARTITIONS]; +} __packed; + +struct get_bp_info_rsp { + struct mkhi_hdr hdr; + struct cse_bp_info bp_info; +} __packed; + +#endif // SOC_INTEL_COMMON_CSE_LITE_H |