util: Add scripts to download and extract blobs

Hardware / Coreboot - Joe Pillow [gmail.com] - 22 February 2016 15:50 UTC

This turned out really handy when I tried to build coreboot for my Chromebox.

These scripts can be used to extract System Agent reference code and other blobs (e.g. mrc.bin, refcode, VGA option roms) from a Chrome OS recovery image.

crosfirmware.sh downloads a Chrome OS recovery image from the recovery image server, unpacks it, extracts the firmware update shell archive, extracts the firmware images from the shell archive.

To download all Chrome OS firmware images, run $ ./crosfirmware.sh

To download, e.g. the Panther firmware image, run $ ./crosfirmware.sh panther

extract_blobs.sh extracts the blobs from a Chrome OS firmware image.

Right now it will produce the ME firmware blob, IFD, VGA option rom, and mrc.bin

Change-Id: I5fb7e14b10e03e18cd360bc35f1dc92e8ed34e63

9a4881a util: Add scripts to download and extract blobs
util/chromeos/README.md | 27 ++++++++
util/chromeos/crosfirmware.sh | 140 ++++++++++++++++++++++++++++++++++++++++
util/chromeos/extract_blobs.sh | 51 +++++++++++++++
3 files changed, 218 insertions(+)

Upstream: review.coreboot.org

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