diff options
Diffstat (limited to 'src/vendorcode/google/chromeos/vboot2/verstage.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/vboot2/verstage.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/vendorcode/google/chromeos/vboot2/verstage.c b/src/vendorcode/google/chromeos/vboot2/verstage.c index bc7846a37d..783d1b613b 100644 --- a/src/vendorcode/google/chromeos/vboot2/verstage.c +++ b/src/vendorcode/google/chromeos/vboot2/verstage.c @@ -209,6 +209,22 @@ static uint32_t extend_pcrs(struct vb2_context *ctx) tpm_extend_pcr(ctx, 1, HWID_DIGEST_PCR); } +static void init_vb2_working_data(void) +{ + struct vb2_working_data *wd; + size_t work_size; + + work_size = vb2_working_data_size(); + wd = vboot_get_working_data(); + memset(wd, 0, work_size); + /* + * vboot prefers 16-byte alignment. This takes away 16 bytes + * from the VBOOT2_WORK region, but the vboot devs said that's okay. + */ + wd->buffer_offset = ALIGN_UP(sizeof(*wd), 16); + wd->buffer_size = work_size - wd->buffer_offset; +} + /** * Verify and select the firmware in the RW image * @@ -219,8 +235,10 @@ void verstage_main(void) { struct vb2_context ctx; struct region_device fw_main; - struct vb2_working_data *wd = vboot_get_working_data(); + struct vb2_working_data *wd; int rv; + init_vb2_working_data(); + wd = vboot_get_working_data(); timestamp_add_now(TS_START_VBOOT); /* Set up context and work buffer */ |