Chromebook C201 (codename veyron_speedy) support

This introduces Libreboot support for the Asus Chromebook C201 (codename
veyron_speedy). At this point, this produces a standalone Libreboot image that
can be flashed to the RO Coreboot partition of the SPI flash, as well as the
Libreboot version that can be flash to the RO Firmware ID partition.

Libreboot on the Chromebook C201 uses the depthcharge bootloader, modified to
display text messages instead of ChromeOS bitmaps (that encourage the use of
ChromeOS).

For convenience, an installation script, chromebook-flash-replace, is provided
along with a description of the flash layout, to ease the replacement of the
Coreboot and RO Firmware ID partitions on the full SPI flash image.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

1 files changed, 42 insertions, 0 deletions

diff --git a/resources/scripts/helpers/download/coreboot b/resources/scripts/helpers/download/coreboot
index 2e1059b3..e166fba8 100755
--- a/resources/scripts/helpers/download/coreboot
+++ b/resources/scripts/helpers/download/coreboot
@@ -49,6 +49,39 @@ git reset --hard a2bed346a1a45c822bc255e90a0bf6a6ae1d1d50
 # vboot submodule is needed
 git submodule update --init --checkout -- 3rdparty/vboot/
 
+# there are modifications required
+cd "3rdparty/vboot/"
+
+git reset --hard 82db93d5fc924860e4f1fb4cf24f29b5b335a480
+
+# Patch vboot
+# ------------------------------------------------------------------------------
+
+printf "firmware: Developer mode timeout delay shortening (down to 3 seconds)\n"
+git am "../../../resources/libreboot/patch/vboot/0001-firmware-Developer-mode-timeout-delay-shortening-dow.patch"
+
+printf "firmware: Text-based screen display in priority\n"
+git am "../../../resources/libreboot/patch/vboot/0002-firmware-Text-based-screen-display-in-priority.patch"
+
+printf "firmware: NV context pointer handoff to VbExDisplayScreen\n"
+git am "../../../resources/libreboot/patch/vboot/0003-firmware-NV-context-pointer-handoff-to-VbExDisplaySc.patch"
+
+printf "firmware: Hold key combination in developer mode\n"
+git am "../../../resources/libreboot/patch/vboot/0004-firmware-Hold-key-combination-in-developer-mode.patch"
+
+printf "firmware: Screen blank and wait at disabled USB boot warning\n"
+git am "../../../resources/libreboot/patch/vboot/0005-firmware-Screen-blank-and-wait-at-disabled-USB-boot-.patch"
+
+printf "firmware: Separate screen and wait at device information screen\n"
+git am "../../../resources/libreboot/patch/vboot/0006-firmware-Separate-screen-and-wait-at-device-informat.patch"
+
+printf "firmware: Localization keys removal\n"
+git am "../../../resources/libreboot/patch/vboot/0007-firmware-Localization-keys-removal.patch"
+
+# leave the vboot tree
+cd "../../"
+
+
 # Get patches from review.coreboot.org
 # ------------------------------------------------------------------------------
 
@@ -139,6 +172,15 @@ printf "ec/lenovo/h8: re-factor handling of power_management_beeps\n"
 # git fetch http://review.coreboot.org/coreboot refs/changes/31/10531/8 && git cherry-pick FETCH_HEAD
 git am "../resources/libreboot/patch/0013-ec-lenovo-h8-re-factor-handling-of-power_management_.patch"
 
+# Chromebook:
+
+printf "armv7: Word-sized/half-word-sized memory operations for 32/16 bit read/write\n"
+# git fetch http://review.coreboot.org/coreboot refs/changes/98/11698/6 && git cherry-pick FETCH_HEAD
+git am "../resources/libreboot/patch/chromebook/0001-armv7-Word-sized-half-word-sized-memory-operations-f.patch"
+
+printf "chromeos: Allow disabling vboot firmware verification when ChromeOS is enabled\n"
+git am "../resources/libreboot/patch/chromebook/0002-chromeos-Allow-disabling-vboot-firmware-verification.patch"
+
 # Run coreboot-libre deblob scripts
 # ------------------------------------------------------------------------------