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| author | Thiebaud Weksteen <tweek@google.com> | 2017-09-20 10:13:39 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2018-01-08 12:58:35 +0200 |
| commit | 33b6d03469b2206fb51ecc37f40411a857ad8fff (patch) | |
| tree | 6b0c5cc3fc87cdc3e5f796b55094563fb9c1bf69 /arch/x86/boot | |
| parent | 4d01d29d9307d321149ff5ad66d47bee8e56c012 (diff) | |
| download | linux-33b6d03469b2206fb51ecc37f40411a857ad8fff.tar.bz2 | |
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 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/eboot.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index e56dbc67e837..353e20c3f114 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -999,6 +999,7 @@ struct boot_params *efi_main(struct efi_config *c, /* Ask the firmware to clear memory on unclean shutdown */ efi_enable_reset_attack_mitigation(sys_table); + efi_retrieve_tpm2_eventlog(sys_table); setup_graphics(boot_params); |