vboot/ui: implement to_dev transition flow
Introduce three new action hooks:
- vb2_screen_info.init
Init function runs once when changing to the screen.
- vb2_screen_info.action
Action function runs repeatedly while on the screen.
- vb2_menu_item:
Action function takes precedence over target screen if non-NULL.
Create the VB2_SCREEN_RECOVERY_TO_DEV screen, and add a
keyboard shortcut to get to that screen directly when in
manual recovery mode: Ctrl+D.
The TO_DEV screen repeatedly checks for the correct physical
verification state. When that state is triggered, it switches
to dev mode and reboots. The trigger depends on physical
presence type:
- PHYSICAL_PRESENCE_KEYBOARD: wait for ENTER key on the
confirm button, pressed by internal keyboard
- !PHYSICAL_PRESENCE_KEYBOARD: wait for the physical presence
button (recovery or power) to be pressed and released
- SPACE character also cancels in order to preserve prior
behaviour
Note that currently there is no way to exit developer mode
once it has been enabled.
BUG=b:146399181
TEST=make clean && make runtests
BRANCH=none
Change-Id: If3ff248d98859d530c3a24524618c6282a5ac5b5
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2168072
Reviewed-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
6 files changed
