[coreboot-gerrit] [S] Change in coreboot[main]: soc/intel/adl: Display low battery message on screen

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Intel coreboot Reviewers, Jayvik Desai, Kapil Porwal, Nick Vaccaro.

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/86224?usp=email )

Change subject: soc/intel/adl: Display low battery message on screen
......................................................................

soc/intel/adl: Display low battery message on screen

This commit adds a function ux_inform_user_of_poweroff_operation
to display a message on the screen when the system is
powering off due to critically low battery.  The message
is centered on the screen and displays a localized string
"Battery critically low. Shutting down". If no localized
string is found, a default English message is displayed.

This implementation rely on CHROMEOS_ENABLE_ESOL Kconfig which is use
to render text message for early sign-off life.

BUG=b:339673254
TEST=Able to capture the eventlog for low battery boot event.

Change-Id: I3b24d2c89ade8cc62b7e47c487d52d47b7f3376d
Signed-off-by: Subrata Banik 
---
M src/soc/intel/alderlake/romstage/ux.c
M src/soc/intel/alderlake/romstage/ux.h
2 files changed, 24 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/86224/1

diff --git a/src/soc/intel/alderlake/romstage/ux.c b/src/soc/intel/alderlake/romstage/ux.c
index 0fb73c18..b79298d 100644
--- a/src/soc/intel/alderlake/romstage/ux.c
+++ b/src/soc/intel/alderlake/romstage/ux.c
@@ -34,3 +34,26 @@
    timestamp_add_now(TS_ESOL_END);
    return true;
 }
+
+bool ux_inform_user_of_poweroff_operation(const char *name)
+{
+	timestamp_add_now(TS_ESOL_START);
+
+	if (!CONFIG(CHROMEOS_ENABLE_ESOL) ||
+	    !early_graphics_init()) {
+		timestamp_add_now(TS_ESOL_END);
+		return false;
+	}
+
+	printk(BIOS_INFO, "Informing user on-display of %s.\n", name);
+
+	const char *text = ux_locales_get_text(UX_MEMORY_TRAINING_DESC);
+	/* No localized text found; fallback to built-in English. */
+	if (!text)
+		text = "Battery critically low. Shutting down";
+	vga_write_text(VGA_TEXT_CENTER, VGA_TEXT_HORIZONTAL_MIDDLE,
+		       (const unsigned char *)text);
+	ux_locales_unmap();
+	timestamp_add_now(TS_ESOL_END);
+	return true;
+}
diff --git a/src/soc/intel/alderlake/romstage/ux.h b/src/soc/intel/alderlake/romstage/ux.h
index 14c10e7..c556c63 100644
--- a/src/soc/intel/alderlake/romstage/ux.h
+++ b/src/soc/intel/alderlake/romstage/ux.h
@@ -4,5 +4,6 @@
 #define _SOC_INTEL_ALDERLAKE_ROMSTAGE_UX_H_

bool ux_inform_user_of_update_operation(const char *name);
+bool ux_inform_user_of_poweroff_operation(const char *name);

#endif /* _SOC_INTEL_ALDERLAKE_ROMSTAGE_UX_H_ */