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| author | Claudio Carvalho <cclaudio@linux.vnet.ibm.com> | 2017-12-09 02:52:20 -0200 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-12-18 21:30:57 -0600 |
| commit | 3281d5a41a825fce5b935e8929971a8847611fc8 (patch) | |
| tree | 893cae01d52a909e18a8911c375b562f7acdc2c4 /asm/cvc_entry.S | |
| parent | 3ab91fbec937830f184108a244795a2e05cb275c (diff) | |
| download | talos-skiboot-3281d5a41a825fce5b935e8929971a8847611fc8.tar.gz talos-skiboot-3281d5a41a825fce5b935e8929971a8847611fc8.zip | |
libstb/trustedboot.c: import tb_measure() from stb.c
This imports tb_measure() from stb.c, but now it calls the CVC sha512
wrapper to calculate the sha512 hash of the firmware image provided.
In trustedboot.c, the tb_measure() is renamed to trustedboot_measure().
The new function, trustedboot_measure(), no longer checks if the
container payload hash calculated at boot time matches with the hash
found in the container header. A few reasons:
- If the system admin wants the container header to be
checked/validated, the secure boot jumper must be set. Otherwise,
the container header information may not be reliable.
- The container layout is expected to change over time. Skiboot
would need to maintain a parser for each container layout
change.
- Skiboot could be checking the hash against a container version that
is not supported by the Container-Verification-Code (CVC).
The tb_measure() calls are updated to trustedboot_measure() in a
subsequent patch.
Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'asm/cvc_entry.S')
| -rw-r--r-- | asm/cvc_entry.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/asm/cvc_entry.S b/asm/cvc_entry.S index ccca006b..069ed094 100644 --- a/asm/cvc_entry.S +++ b/asm/cvc_entry.S @@ -26,10 +26,10 @@ .section .text .global __cvc_verify_v1 -.global call_rom_SHA512 +.global __cvc_sha512_v1 __cvc_verify_v1: -call_rom_SHA512: +__cvc_sha512_v1: call_rom_entry: std %r2, 40(%r1) |
