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| author | Michał Żygowski <michal.zygowski@3mdeb.com> | 2023-05-25 11:20:14 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-09-18 13:21:48 +0000 |
| commit | cb2561d2765f637dd4d11a1e57f43dd0a21d06e7 (patch) | |
| tree | 832d15103c2f4378385037fca4fb6e07c7c7c2c7 /src/security | |
| parent | 1c3b6b3230eba41484abd72577d6472b3655c297 (diff) | |
| download | coreboot-cb2561d2765f637dd4d11a1e57f43dd0a21d06e7.tar.gz coreboot-cb2561d2765f637dd4d11a1e57f43dd0a21d06e7.tar.bz2 coreboot-cb2561d2765f637dd4d11a1e57f43dd0a21d06e7.zip | |
security/vboot: Update vboot context with slot B absence
coreboot offers two vboot schemes VBOOT_SLOTS_RW_A and
VBOOT_SLOTS_RW_AB. When VBOOT_SLOTS_RW_AB is not selected then the
resulting image is rather not expected to have the FW_MAIN_B FMAP
region. When only RW_A region is used, vboot does additional full_reset
cycles to try RW_B, even though it does not exist / the build was not
configured for two RW partitions. To avoid it, a new vboot context
flag has been introduced, VB2_CONTEXT_SLOT_A_ONLY, which can be set
right after context initialization to inform vboot about absence of
slot B. This will result in less full_reset cycles when vboot runs
out of available slots and cause vboot to switch to recovery mode
faster.
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: Ie123881a2f9f766ae65e4ac7c36bc2a8fce8d100
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75462
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/security')
| -rw-r--r-- | src/security/vboot/vboot_logic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c index 491615a4db83..9a8a9657e460 100644 --- a/src/security/vboot/vboot_logic.c +++ b/src/security/vboot/vboot_logic.c @@ -259,6 +259,9 @@ void verstage_main(void) platform_is_resuming()) ctx->flags |= VB2_CONTEXT_S3_RESUME; + if (!CONFIG(VBOOT_SLOTS_RW_AB)) + ctx->flags |= VB2_CONTEXT_SLOT_A_ONLY; + /* Read secdata from TPM. Initialize TPM if secdata not found. We don't * check the return value here because vb2api_fw_phase1 will catch * invalid secdata and tell us what to do (=reboot). */ |