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| author | Thiebaud Weksteen <tweek@google.com> | 2017-09-20 11:13:39 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2018-01-08 13:58:35 +0300 |
| commit | 33b6d03469b2206fb51ecc37f40411a857ad8fff (patch) | |
| tree | 6b0c5cc3fc87cdc3e5f796b55094563fb9c1bf69 /drivers/firmware/efi/efi.c | |
| parent | 4d01d29d9307d321149ff5ad66d47bee8e56c012 (diff) | |
| download | linux-33b6d03469b2206fb51ecc37f40411a857ad8fff.tar.xz | |
efi: call get_event_log before ExitBootServices
With TPM 2.0 specification, the event logs may only be accessible by
calling an EFI Boot Service. Modify the EFI stub to copy the log area to
a new Linux-specific EFI configuration table so it remains accessible
once booted.
When calling this service, it is possible to specify the expected format
of the logs: TPM 1.2 (SHA1) or TPM 2.0 ("Crypto Agile"). For now, only the
first format is retrieved.
Signed-off-by: Thiebaud Weksteen <tweek@google.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/firmware/efi/efi.c')
| -rw-r--r-- | drivers/firmware/efi/efi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 557a47829d03..cfa6fe786ab6 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -52,6 +52,7 @@ struct efi __read_mostly efi = { .properties_table = EFI_INVALID_TABLE_ADDR, .mem_attr_table = EFI_INVALID_TABLE_ADDR, .rng_seed = EFI_INVALID_TABLE_ADDR, + .tpm_log = EFI_INVALID_TABLE_ADDR }; EXPORT_SYMBOL(efi); @@ -464,6 +465,7 @@ static __initdata efi_config_table_type_t common_tables[] = { {EFI_PROPERTIES_TABLE_GUID, "PROP", &efi.properties_table}, {EFI_MEMORY_ATTRIBUTES_TABLE_GUID, "MEMATTR", &efi.mem_attr_table}, {LINUX_EFI_RANDOM_SEED_TABLE_GUID, "RNG", &efi.rng_seed}, + {LINUX_EFI_TPM_EVENT_LOG_GUID, "TPMEventLog", &efi.tpm_log}, {NULL_GUID, NULL, NULL}, }; @@ -552,6 +554,8 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz, if (efi_enabled(EFI_MEMMAP)) efi_memattr_init(); + efi_tpm_eventlog_init(); + /* Parse the EFI Properties table if it exists */ if (efi.properties_table != EFI_INVALID_TABLE_ADDR) { efi_properties_table_t *tbl; |