mb/google/hatch: Add variant finalize support for hatch devices

Provide a variant_finalize() method and call to be invoked from
mainboard_ops.final

BUG=b:245953688
TEST=Hatch and variants build
BRANCH=Hatch

Signed-off-by: Tarun Tuli <taruntuli@google.com>
Change-Id: I9253ed4be1b08d0c7f65526c9b26dbcd00ffccc7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68821
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/hatch/ramstage.c

@@ -55,7 +55,22 @@ static void mainboard_chip_init(void *chip_info)
 	variant_ramstage_init();
 }
 
+void __weak variant_final(void)
+{
+}
+
+static void mainboard_final(void *chip_info)
+{
+	const struct pad_config *variant_finalize;
+	size_t variant_gpios;
+	variant_finalize = variant_finalize_gpio_table(&variant_gpios);
+	gpio_configure_pads(variant_finalize, variant_gpios);
+
+	variant_final();
+}
+
 struct chip_operations mainboard_ops = {
 	.init = mainboard_chip_init,
 	.enable_dev = mainboard_enable,
+	.final = mainboard_final,
 };

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

@@ -433,3 +433,10 @@ const struct pad_config *__weak variant_early_gpio_table(size_t *num)
 	*num = 0;
 	return NULL;
 }
+
+/* Weak implementation of finalize gpio */
+const struct pad_config *__weak variant_finalize_gpio_table(size_t *num)
+{
+	*num = 0;
+	return NULL;
+}

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

@@ -27,12 +27,18 @@ const struct pad_config *variant_sleep_gpio_table(u8 slp_typ, size_t *num);
 /* Return GPIO pads that need to be configured before ramstage */
 const struct pad_config *variant_early_gpio_table(size_t *num);
 
+/* Return GPIO pads that need to be configured after ramstage */
+const struct pad_config *variant_finalize_gpio_table(size_t *num);
+
 /* Modify devictree settings during ramstage. */
 void variant_devtree_update(void);
 
 /* Perform variant specific initialization early on in ramstage. */
 void variant_ramstage_init(void);
 
+/* Perform variant specific mainboard finalization */
+void variant_final(void);
+
 /* Perform variant specific mainboard initialization */
 void variant_mainboard_enable(struct device *dev);