diff options
Diffstat (limited to 'firmware/include/vboot_struct.h')
-rw-r--r-- | firmware/include/vboot_struct.h | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/firmware/include/vboot_struct.h b/firmware/include/vboot_struct.h index bb47403b..f4364274 100644 --- a/firmware/include/vboot_struct.h +++ b/firmware/include/vboot_struct.h @@ -131,10 +131,38 @@ typedef struct VbKernelPreambleHeader { #define EXPECTED_VBKERNELPREAMBLEHEADER_SIZE 96 +/* Magic number for recognizing VbSharedDataHeader ("VbSD") */ +#define VB_SHARED_DATA_MAGIC 0x44536256 + /* Minimum and recommended size of shared_data_blob in bytes. */ #define VB_SHARED_DATA_MIN_SIZE 3072 #define VB_SHARED_DATA_REC_SIZE 16384 +/* Flags for VbSharedDataHeader */ +/* LoadFirmware() tried firmware B because of VbNvStorage firmware B tries */ +#define VBSD_FWB_TRIED 0x00000001 +/* LoadKernel() verified the kernel keyblock using the kernel subkey from + * the firmware. If this flag is not present, it just used the hash of the + * kernel keyblock. */ +#define VBSD_KERNEL_KEY_VERIFIED 0x00000002 +/* LoadFirmware() was told the developer switch was on */ +#define VBSD_LF_DEV_SWITCH_ON 0x00000004 + +/* Result codes for checking firmware A and B */ +#define VBSD_LF_CHECK_NOT_DONE 0 +#define VBSD_LF_CHECK_DEV_MISMATCH 1 +#define VBSD_LF_CHECK_REC_MISMATCH 2 +#define VBSD_LF_CHECK_VERIFY_KEYBLOCK 3 +#define VBSD_LF_CHECK_KEY_ROLLBACK 4 +#define VBSD_LF_CHECK_DATA_KEY_PARSE 5 +#define VBSD_LF_CHECK_VERIFY_PREAMBLE 6 +#define VBSD_LF_CHECK_FW_ROLLBACK 7 +#define VBSD_LF_CHECK_HEADER_VALID 8 +#define VBSD_LF_CHECK_GET_FW_BODY 9 +#define VBSD_LF_CHECK_HASH_WRONG_SIZE 10 +#define VBSD_LF_CHECK_VERIFY_BODY 11 +#define VBSD_LF_CHECK_VALID 12 + /* Data shared between LoadFirmware(), LoadKernel(), and OS. * * The boot process is: @@ -149,18 +177,19 @@ typedef struct VbKernelPreambleHeader { * For example, via ACPI or ATAGs. */ typedef struct VbSharedDataHeader { /* Fields present in version 1 */ + uint32_t magic; /* Magic number for struct + * (VB_SHARED_DATA_MAGIC) */ uint32_t struct_version; /* Version of this structure */ uint64_t struct_size; /* Size of this structure in bytes */ uint64_t data_size; /* Size of shared data buffer in bytes */ uint64_t data_used; /* Amount of shared data used so far */ + uint32_t flags; /* Flags */ VbPublicKey kernel_subkey; /* Kernel subkey, from firmware */ uint64_t kernel_subkey_data_offset; /* Offset of kernel subkey data from * start of this struct */ uint64_t kernel_subkey_data_size; /* Size of kernel subkey data */ - uint64_t flags; /* Flags */ - /* Timer values from VbGetTimer(). Unused values are set to 0. If a * function is called mutiple times, these are the times from the * most recent call. */ @@ -171,6 +200,13 @@ typedef struct VbSharedDataHeader { uint64_t timer_load_kernel_enter; /* LoadKernel() - enter */ uint64_t timer_load_kernel_exit; /* LoadKernel() - exit */ + uint8_t check_fw_a_result; /* Result of checking RW firmware A */ + uint8_t check_fw_b_result; /* Result of checking RW firmware B */ + uint8_t firmware_index; /* Firmware index returned by + * LoadFirmware() or 0xFF if failure */ + uint32_t fw_version_tpm_start; /* Firmware TPM version at start */ + uint32_t fw_version_lowest; /* Firmware lowest version found */ + /* After read-only firmware which uses version 1 is released, any additional * fields must be added below, and the struct version must be increased. * Before reading/writing those fields, make sure that the struct being |