diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2021-05-12 12:50:41 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-06-04 18:51:20 +0000 |
| commit | fc7900b6b96cdb7044122bc00bbd5c760a069325 (patch) | |
| tree | 82880e62fa988f7cb8476677fc9c2b54c512ba0c /src/security/vboot | |
| parent | c11d4fb0b032504816ff69766b27b8889f067327 (diff) | |
vboot: Add VB2_CONTEXT_EC_TRUSTED
This patch makes coreboot set VB2_CONTEXT_EC_TRUSTED based on the EC"s
boot mode. Vboot will check VB2_CONTEXT_EC_TRUSTED to determine
whether it can enter recovery mode or not.
BUG=b:180927027, b:187871195
BRANCH=none
TEST=build
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Change-Id: I9fa09dd7ae5baa1efb4e1ed4f0fe9a6803167c93
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54099
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/security/vboot')
| -rw-r--r-- | src/security/vboot/vboot_logic.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c index 70c7d77073..c257d22b8e 100644 --- a/src/security/vboot/vboot_logic.c +++ b/src/security/vboot/vboot_logic.c @@ -212,15 +212,18 @@ static uint32_t extend_pcrs(struct vb2_context *ctx) vboot_extend_pcr(ctx, 1, HWID_DIGEST_PCR); } -#define EC_EFS_BOOT_MODE_NORMAL 0x00 -#define EC_EFS_BOOT_MODE_NO_BOOT 0x01 +#define EC_EFS_BOOT_MODE_TRUSTED_RO 0x00 +#define EC_EFS_BOOT_MODE_UNTRUSTED_RO 0x01 +#define EC_EFS_BOOT_MODE_VERIFIED_RW 0x02 static const char *get_boot_mode_string(uint8_t boot_mode) { - if (boot_mode == EC_EFS_BOOT_MODE_NORMAL) - return "NORMAL"; - else if (boot_mode == EC_EFS_BOOT_MODE_NO_BOOT) - return "NO_BOOT"; + if (boot_mode == EC_EFS_BOOT_MODE_TRUSTED_RO) + return "TRUSTED_RO"; + else if (boot_mode == EC_EFS_BOOT_MODE_UNTRUSTED_RO) + return "UNTRUSTED_RO"; + else if (boot_mode == EC_EFS_BOOT_MODE_VERIFIED_RW) + return "VERIFIED_RW"; else return "UNDEFINED"; } @@ -253,8 +256,10 @@ static void check_boot_mode(struct vb2_context *ctx) printk(BIOS_INFO, "Cr50 says boot_mode is %s(0x%02x).\n", get_boot_mode_string(boot_mode), boot_mode); - if (boot_mode == EC_EFS_BOOT_MODE_NO_BOOT) + if (boot_mode == EC_EFS_BOOT_MODE_UNTRUSTED_RO) ctx->flags |= VB2_CONTEXT_NO_BOOT; + else if (boot_mode == EC_EFS_BOOT_MODE_TRUSTED_RO) + ctx->flags |= VB2_CONTEXT_EC_TRUSTED; } /** |