diff options
| author | Dov Murik <dovmurik@linux.ibm.com> | 2021-09-30 08:49:14 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-05 12:47:24 +0200 |
| commit | cff03145ed3cec5c7bd542ea2e6b4458439e0bb0 (patch) | |
| tree | d8be69a47ccfb38678ceac655186ae6674387f2c /target/i386/sev_i386.h | |
| parent | 7f7c8d0ce3630849a4df3d627b11de354fcb3bb0 (diff) | |
sev/i386: Introduce sev_add_kernel_loader_hashes for measured linux boot
Add the sev_add_kernel_loader_hashes function to calculate the hashes of
the kernel/initrd/cmdline and fill a designated OVMF encrypted hash
table area. For this to work, OVMF must support an encrypted area to
place the data which is advertised via a special GUID in the OVMF reset
table.
The hashes of each of the files is calculated (or the string in the case
of the cmdline with trailing '\0' included). Each entry in the hashes
table is GUID identified and since they're passed through the
sev_encrypt_flash interface, the hashes will be accumulated by the AMD
PSP measurement (SEV_LAUNCH_MEASURE).
Co-developed-by: James Bottomley <jejb@linux.ibm.com>
Signed-off-by: James Bottomley <jejb@linux.ibm.com>
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210930054915.13252-2-dovmurik@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/sev_i386.h')
| -rw-r--r-- | target/i386/sev_i386.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/target/i386/sev_i386.h b/target/i386/sev_i386.h index ae6d840478..2afe108069 100644 --- a/target/i386/sev_i386.h +++ b/target/i386/sev_i386.h @@ -28,6 +28,17 @@ #define SEV_POLICY_DOMAIN 0x10 #define SEV_POLICY_SEV 0x20 +typedef struct SevKernelLoaderContext { + char *setup_data; + size_t setup_size; + char *kernel_data; + size_t kernel_size; + char *initrd_data; + size_t initrd_size; + char *cmdline_data; + size_t cmdline_size; +} SevKernelLoaderContext; + extern bool sev_es_enabled(void); extern uint64_t sev_get_me_mask(void); extern SevInfo *sev_get_info(void); @@ -37,5 +48,6 @@ extern char *sev_get_launch_measurement(void); extern SevCapability *sev_get_capabilities(Error **errp); extern SevAttestationReport * sev_get_attestation_report(const char *mnonce, Error **errp); +extern bool sev_add_kernel_loader_hashes(SevKernelLoaderContext *ctx, Error **errp); #endif |