This patch modifies the get_lid_switch() function to allow faking the
lid switch state when the GBB_FLAG_DISABLE_LID_SHUTDOWN Kconfig option
is enabled.
When GBB_FLAG_DISABLE_LID_SHUTDOWN is enabled, the function will
always return 1 (lid open), bypassing the actual lid switch state
retrieval from the Embedded Controller (EC).
This functionality is specifically designed to facilitate factory
processes, such as netboot image downloads, where devices need to
remain operational regardless of the lid's closed state. This prevents
intended shutdowns triggered by a closed lid during manufacturing and
testing.
By setting GBB_FLAG_DISABLE_LID_SHUTDOWN, we override the actual
lid status with a simulated LID status is open, which is a
prerequisite for display initialization.
w/o this patch:
```
[ALERT] Graphics hand-off block not found
...
[INFO ] NAME | PORT | POLARITY | VALUE
[INFO ] lid | undefined | high | low
```
w/ this patch:
```
[INFO ] NAME | PORT | POLARITY | VALUE
[INFO ] lid | undefined | high | high
...
[INFO ] framebuffer_info: bytes_per_line: 7680, bits_per_pixel: 32
[INFO ] x_res x y_res: 1920 x 1200, size: 9216000 at 0xd0000000
```
BUG=b:333982806
TEST=Verified lid switch behavior with and without
`GBB_FLAG_DISABLE_LID_SHUTDOWN` enabled.
Change-Id: I89d506ab50b421b93be13b0e5e36a7ef1247e2b9
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86807
Reviewed-by: Jayvik Desai <jayvik@google.com>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
e6a89935e9