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lib: Add support for off-mode charging indicator

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Introduce CONFIG_PLATFORM_HAS_OFF_MODE_CHARGING_INDICATOR to support
rendering a dedicated splash screen when a device is in an off-mode
charging state. This provides visual feedback to the user when a
device autoboots upon power cable insertion instead of performing
a full OS boot.

Changes:
- Add Kconfig options for enabling the indicator and specifying
  the logo path.
- Update Makefile.mk to include the off-mode charging BMP file
  in CBFS when the feature is enabled.
- Depend on BMP_LOGO infrastructure for asset rendering.

BUG=b:473480933
TEST=Able to build google/fatcat.

Change-Id: Ib09de15ca3526bf5b10f7404dc58032d63c01e6d
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91105
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
This commit is contained in:
Subrata Banik 2026-02-05 12:48:45 +05:30
commit 623c0972fd
2 changed files with 19 additions and 0 deletions
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17
src/lib/Kconfig
View file

@ -270,6 +270,23 @@ config SPLASH_SCREEN_FOOTER_LOGO_PATH
depends on SPLASH_SCREEN_FOOTER
default "3rdparty/blobs/mainboard/\$(MAINBOARDDIR)/logo.bmp"
config PLATFORM_HAS_OFF_MODE_CHARGING_INDICATOR
bool "Display off-mode charging indicator"
default n
depends on BMP_LOGO
help
Enable an off-mode charging splash screen to notify the user that
the device is charging. This prevents user confusion when a
device autoboots into a charging state upon the
insertion of a power cable, rather than performing a full OS boot.
This feature requires a functional display and depends on the
BMP_LOGO infrastructure to render the charging assets.
config PLATFORM_OFF_MODE_CHARGING_INDICATOR_LOGO_PATH
string "Path to off-mode charging logo file"
default "3rdparty/blobs/mainboard/\$(MAINBOARDDIR)/off_mode_charging.bmp"
endmenu
config HAVE_EARLY_POWEROFF_SUPPORT

2
src/lib/Makefile.mk
View file

@ -449,3 +449,5 @@ $(eval $(call add_bmp_logo_file_to_cbfs,CONFIG_PLATFORM_HAS_LOW_BATTERY_INDICATO
low_battery.bmp,CONFIG_PLATFORM_LOW_BATTERY_INDICATOR_LOGO_PATH))
$(eval $(call add_bmp_logo_file_to_cbfs,CONFIG_SPLASH_SCREEN_FOOTER, \
footer_logo.bmp,CONFIG_SPLASH_SCREEN_FOOTER_LOGO_PATH))
$(eval $(call add_bmp_logo_file_to_cbfs,CONFIG_PLATFORM_HAS_OFF_MODE_CHARGING_INDICATOR, \
off_mode_charging.bmp,CONFIG_PLATFORM_OFF_MODE_CHARGING_INDICATOR_LOGO_PATH))