vboot: Add GBB flag to turn on serial output
Currently this does nothing. This will eventually be used to enable
serial output.
BUG=chromium:210230
BRANCH=none
TEST=none
Change-Id: I5c25fd7406e30b96d12bc4bf8210d3c3f4ae79f1
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/309716
Reviewed-by: Randall Spangler <rspangler@chromium.org>
diff --git a/firmware/2lib/include/2struct.h b/firmware/2lib/include/2struct.h
index 2d43218..da687b0 100644
--- a/firmware/2lib/include/2struct.h
+++ b/firmware/2lib/include/2struct.h
@@ -275,6 +275,9 @@
* dev_boot_fastboot_full_cap=0.
*/
VB2_GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP = (1 << 13),
+
+ /* Enable serial */
+ VB2_GBB_FLAG_ENABLE_SERIAL = (1 << 14),
};
struct vb2_gbb_header {
diff --git a/firmware/include/gbb_header.h b/firmware/include/gbb_header.h
index c413372..c7e2a05 100644
--- a/firmware/include/gbb_header.h
+++ b/firmware/include/gbb_header.h
@@ -72,6 +72,8 @@
* dev_boot_fastboot_full_cap=0.
*/
#define GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP 0x00002000
+/* Enable serial console */
+#define GBB_FLAG_ENABLE_SERIAL 0x00004000
#ifdef __cplusplus
extern "C" {
diff --git a/scripts/image_signing/set_gbb_flags.sh b/scripts/image_signing/set_gbb_flags.sh
index d2cba49..ac96be6 100755
--- a/scripts/image_signing/set_gbb_flags.sh
+++ b/scripts/image_signing/set_gbb_flags.sh
@@ -37,6 +37,7 @@
GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC 0x00000800
GBB_FLAG_DISABLE_LID_SHUTDOWN 0x00001000
GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP 0x00002000
+ GBB_FLAG_ENABLE_SERIAL 0x00004000
To get a developer-friendly device, try 0x11 (short_delay + boot_usb).
For factory-related tests (always DEV), try 0x39.
