commit efea801390caff45c2ef6083fde5f253f03bc395
author Tom Wai-Hong Tam <waihong@chromium.org> Mon Aug 22 18:45:31 2011 +0800
committer Tom Wai-Hong Tam <waihong@chromium.org> Tue Aug 23 20:19:12 2011 -0700
tree 2a46ec69200bf457e98d878ad7b2c66e7474519c
parent 69b88dc99b0c3ed12ad66f8df7b65ecc3682204f

Don't check the firmware body when USE_RO_NORMAL preamble flag is presented.

Since the firmware supporting RO normal boot doesn't contains any valid RW
firmware body. Skipping the check avoids unnecessary failure.

BUG=chromium-os:19451
TEST=manual

Picked a firmware supporting RO normal boot and extracted its sections. Ran:
$ vbutil_firmware --verify VBLOCK_A --signpubkey \
> /usr/share/vboot/devkeys/root_key.vbpubk --fv RW_SECTION_A
Key block:
  Size:                2232
  Flags:               7 (ignored)
  Data key algorithm:  7 RSA4096 SHA256
  Data key version:    1
  Data key sha1sum:    e2c1c92d7d7aa7dfed5e8375edd30b7ae52b7450
Preamble:
  Size:                  2164
  Header version:        2.1
  Firmware version:      1
  Kernel key algorithm:  7 RSA4096 SHA256
  Kernel key version:    1
  Kernel key sha1sum:    5d2b220899c4403d564092ada3f12d3cc4483223
  Firmware body size:    456411
  Preamble flags:        1
Preamble requests USE_RO_NORMAL; skipping body verification.

Change-Id: I8b81e679016f2946198396c5627415fe979c0a4f
Reviewed-on: http://gerrit.chromium.org/gerrit/6396
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>