Change in coreboot[master]: mb/google/guybrush: Add option to toggle GPIO for sign of life

[Martin Roth (Code Review)]

Martin Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/51069 )

Change subject: mb/google/guybrush: Add option to toggle GPIO for sign of life
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mb/google/guybrush: Add option to toggle GPIO for sign of life

Enabling the GPIO_SIGN_OF_LIFE option will allow for early boot testing.

BUG=b:180721202
TEST=builds

Change-Id: I069623ae76a4e4d1e43a47dd95fdfcece398ebfb
Signed-off-by: Mathew King 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51069
Tested-by: build bot (Jenkins) 
Reviewed-by: EricR Lai 
---
M src/mainboard/google/guybrush/Kconfig
M src/mainboard/google/guybrush/bootblock.c
2 files changed, 19 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  EricR Lai: Looks good to me, approved

diff --git a/src/mainboard/google/guybrush/Kconfig b/src/mainboard/google/guybrush/Kconfig
index bd4848c..46e8a5a 100644
--- a/src/mainboard/google/guybrush/Kconfig
+++ b/src/mainboard/google/guybrush/Kconfig
@@ -55,4 +55,11 @@
    string
    default "Google_Guybrush"

+config GPIO_SIGN_OF_LIFE
+	def_bool n
+	help
+	  Enable toggling GPIO 31 as a sign of life on Guybrush
+
+	  TODO: Remove this option when board is booting
+
 endif # BOARD_GOOGLE_BASEBOARD_GUYBRUSH
diff --git a/src/mainboard/google/guybrush/bootblock.c b/src/mainboard/google/guybrush/bootblock.c
index d7a30b0..5eacd0b 100644
--- a/src/mainboard/google/guybrush/bootblock.c
+++ b/src/mainboard/google/guybrush/bootblock.c
@@ -2,6 +2,9 @@

#include <bootblock_common.h>
 #include <baseboard/variants.h>
+#include <delay.h>
+#include <gpio.h>
+#include <soc/gpio.h>

void bootblock_mainboard_early_init(void)
 {
@@ -10,4 +13,13 @@

gpios = variant_bootblock_gpio_table(&num_gpios);
    program_gpios(gpios, num_gpios);
+
+	if (CONFIG(GPIO_SIGN_OF_LIFE)) {
+		for (int x = 0; x < 20; x++) {
+			gpio_set(GPIO_31, 1);
+			mdelay(10);
+			gpio_set(GPIO_31, 0);
+			mdelay(10);
+		}
+	}
 }