gsctool: add machine output support (-M) to FW image info (-b)

Now can print out FW versions and board ID in the image in a
machine-friendly way. This allows other programs (e.g., debugd) to parse
the output.

Add equality check to the firmware versions and board IDs in slot A and B.
Now gsctool prints out an error message to stdout if the contents do not
match; otherwise, it prints out only one copy of the contents instead of
two.

Sample runs:

$ gsctool -b cr50.bin.prod
RO_A:0.0.10 RW_A:0.3.10[ABCD:00000000:00000000]

$ gsctool -b cr50.bin.prod -M
IMAGE_RO_FW_VER=0.0.10
IMAGE_RW_FW_VER=0.3.10
IMAGE_BID_STRING=ABCD
IMAGE_BID_MASK=00000000
IMAGE_BID_FLAGS=00000000

BRANCH=none
BUG=None
TEST=manually run gsctool -M -b cr50.bin.prod and gsctool -b cr50.bin.prod
     on a soraka device connected with a naultilus. Outputs are as the
     examples above.

Signed-off-by: Wei-Cheng Xiao <garryxiao@chromium.org>

Change-Id: I1c4c5110fe236debb93b3db118abb4c922b98bdf
Reviewed-on: https://chromium-review.googlesource.com/1278414
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Wei-Cheng Xiao <garryxiao@chromium.org>
Reviewed-by: Andrey Pronin <apronin@chromium.org>

0 files changed, 0 insertions, 0 deletions