mb/google/mancomb: Configure early GPIOs in earliest stage

Configure early GPIOs in verstage if it is run in PSP otherwise
configure them in bootblock.

BUG=b:182211161
TEST=builds

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: Ic1faeea59462319c1652c69034b4dde01669e13b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Mathew King <mathewk@chromium.org>

src/mainboard/google/mancomb/bootblock.c

@@ -7,6 +7,9 @@ void bootblock_mainboard_early_init(void)
 {
 	size_t num_gpios;
 	const struct soc_amd_gpio *gpios;
-	gpios = variant_bootblock_gpio_table(&num_gpios);
-	program_gpios(gpios, num_gpios);
+
+	if (!CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)) {
+		gpios = variant_early_gpio_table(&num_gpios);
+		program_gpios(gpios, num_gpios);
+	}
 }

src/mainboard/google/mancomb/variants/baseboard/Makefile.inc

@@ -1,3 +1,5 @@
 bootblock-y += gpio.c
 
 ramstage-y += gpio.c
+
+verstage-y += gpio.c

src/mainboard/google/mancomb/variants/baseboard/gpio.c

@@ -163,9 +163,9 @@ static const struct soc_amd_gpio base_gpio_table[] = {
 	PAD_NF(GPIO_148, I2C1_SDA, PULL_NONE),
 };
 
-/* Early GPIO configuration in bootblock */
-static const struct soc_amd_gpio bootblock_gpio_table[] = {
-	/* TODO: Fill bootblock gpio configuration */
+/* Early GPIO configuration */
+static const struct soc_amd_gpio early_gpio_table[] = {
+	/* TODO: Fill early gpio configuration */
 };
 
 const struct soc_amd_gpio *__weak variant_base_gpio_table(size_t *size)
@@ -179,8 +179,8 @@ const struct soc_amd_gpio *__weak variant_override_gpio_table(size_t *size)
 	return NULL;
 }
 
-const struct soc_amd_gpio *__weak variant_bootblock_gpio_table(size_t *size)
+const struct soc_amd_gpio *__weak variant_early_gpio_table(size_t *size)
 {
-	*size = ARRAY_SIZE(bootblock_gpio_table);
-	return bootblock_gpio_table;
+	*size = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
 }

src/mainboard/google/mancomb/variants/baseboard/include/baseboard/variants.h

@@ -18,7 +18,7 @@ const struct soc_amd_gpio *variant_base_gpio_table(size_t *size);
  */
 const struct soc_amd_gpio *variant_override_gpio_table(size_t *size);
 
-/* This function provides GPIO init in bootblock. */
-const struct soc_amd_gpio *variant_bootblock_gpio_table(size_t *size);
+/* This function provides early GPIO init in bootblock or psp. */
+const struct soc_amd_gpio *variant_early_gpio_table(size_t *size);
 
 #endif /* __BASEBOARD_VARIANTS_H__ */

src/mainboard/google/mancomb/verstage.c

@@ -1,9 +1,22 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
+#include <amdblocks/gpio_banks.h>
+#include <baseboard/variants.h>
 #include <security/vboot/vboot_common.h>
 
+static void setup_gpio(void)
+{
+	const struct soc_amd_gpio *gpios;
+	size_t num_gpios;
+	if (CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)) {
+		gpios = variant_early_gpio_table(&num_gpios);
+		program_gpios(gpios, num_gpios);
+	}
+}
+
 void verstage_mainboard_early_init(void)
 {
+	setup_gpio();
 }
 
 void verstage_mainboard_init(void)