[S] Change in coreboot[master]: mg/google/zork: Add functionality to set GPIOs in romstage

[Matt DeVillier (Code Review)]

Attention is currently required from: Jason Nien, Martin Roth.

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69482 )

Change subject: mg/google/zork: Add functionality to set GPIOs in romstage
......................................................................

mg/google/zork: Add functionality to set GPIOs in romstage

Add (empty) baseboard GPIO tables, getter functions, and call to
gpio_configure_pads() in romstage, in preparation for adding
touchscreen GPIO configuration/power sequencing.

Change-Id: If0f626dbc7e601c2f49759e49a0baf027bf25f96
Signed-off-by: Matt DeVillier 
---
M src/mainboard/google/zork/romstage.c
M src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c
M src/mainboard/google/zork/variants/baseboard/gpio_baseboard_trembyle.c
M src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
4 files changed, 43 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/82/69482/1

diff --git a/src/mainboard/google/zork/romstage.c b/src/mainboard/google/zork/romstage.c
index f72789a..9c70974 100644
--- a/src/mainboard/google/zork/romstage.c
+++ b/src/mainboard/google/zork/romstage.c
@@ -2,6 +2,7 @@

#include <baseboard/variants.h>
 #include <soc/fsp.h>
+#include <soc/platform_descriptors.h>

void __weak variant_updm_update(FSP_M_CONFIG *mcfg) {}

@@ -9,3 +10,12 @@
 {
    variant_updm_update(mcfg);
 }
+
+void mb_pre_fspm(void)
+{
+	const struct soc_amd_gpio *gpios;
+	size_t num_gpios;
+
+	gpios = baseboard_romstage_gpio_table(&num_gpios);
+	gpio_configure_pads(gpios, num_gpios);
+}
diff --git a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c
index 70e456c..3953a92 100644
--- a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c
+++ b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c
@@ -353,3 +353,11 @@
    *size = ARRAY_SIZE(early_gpio_table);
    return early_gpio_table;
 }
+
+static const struct soc_amd_gpio romstage_gpio_table[] = {};
+
+const struct soc_amd_gpio *baseboard_romstage_gpio_table(size_t *size)
+{
+	*size = ARRAY_SIZE(romstage_gpio_table);
+	return romstage_gpio_table;
+}
diff --git a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_trembyle.c b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_trembyle.c
index 455684e..17c00db 100644
--- a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_trembyle.c
+++ b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_trembyle.c
@@ -402,3 +402,11 @@
    *size = ARRAY_SIZE(early_gpio_table);
    return early_gpio_table;
 }
+
+static const struct soc_amd_gpio romstage_gpio_table[] = {};
+
+const struct soc_amd_gpio *baseboard_romstage_gpio_table(size_t *size)
+{
+	*size = ARRAY_SIZE(romstage_gpio_table);
+	return romstage_gpio_table;
+}
diff --git a/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
index c76ca02..fd39d1a 100644
--- a/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
@@ -23,6 +23,9 @@
 /* This function provides GPIO init in bootblock. */
 const struct soc_amd_gpio *variant_bootblock_gpio_table(size_t *size, int slp_typ);

+/* This function provides GPIO settings for romstge. */
+const struct soc_amd_gpio *baseboard_romstage_gpio_table(size_t *size);
+
 /*
  * This function provides GPIO table for the pads that need to be configured when entering
  * sleep.