mb/google/guybrush: Add stubs to configure GPIOs

BUG=b:175143925
TEST=builds

Signed-off-by: Mathew King <mathewk@chromium.org>
Change-Id: I5afd2df396ba41f7d25fa7ff6879b7c1f82f438c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49954
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Mathew King
2021-01-26 16:08:14 -07:00
committed by Patrick Georgi
parent 30cca6ca2a
commit 10dd775ae3
5 changed files with 72 additions and 2 deletions

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@@ -5,5 +5,9 @@
void bootblock_mainboard_early_init(void)
{
/* TODO: Perform mainboard initialization */
size_t num_gpios;
const struct soc_amd_gpio *gpios;
gpios = variant_bootblock_gpio_table(&num_gpios);
program_gpios(gpios, num_gpios);
}

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@@ -1,10 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/variants.h>
#include <device/device.h>
static void mainboard_configure_gpios(void)
{
size_t base_num_gpios, override_num_gpios;
const struct soc_amd_gpio *base_gpios, *override_gpios;
base_gpios = variant_base_gpio_table(&base_num_gpios);
override_gpios = variant_override_gpio_table(&override_num_gpios);
gpio_configure_pads_with_override(base_gpios, base_num_gpios, override_gpios,
override_num_gpios);
}
static void mainboard_init(void *chip_info)
{
/* TODO: Perform mainboard initialization */
mainboard_configure_gpios();
}
static void mainboard_enable(struct device *dev)

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@@ -0,0 +1,3 @@
bootblock-y += gpio.c
ramstage-y += gpio.c

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@@ -0,0 +1,32 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/gpio.h>
#include <baseboard/variants.h>
#include <commonlib/helpers.h>
/* GPIO configuration in ramstage*/
static const struct soc_amd_gpio base_gpio_table[] = {
/* TODO: Fill gpio configuration */
};
/* Early GPIO configuration in bootblock */
static const struct soc_amd_gpio bootblock_gpio_table[] = {
/* TODO: Fill bootblock gpio configuration */
};
const struct soc_amd_gpio *__weak variant_base_gpio_table(size_t *size)
{
*size = ARRAY_SIZE(base_gpio_table);
return base_gpio_table;
}
const struct soc_amd_gpio *__weak variant_override_gpio_table(size_t *size)
{
*size = 0;
return NULL;
}
const struct soc_amd_gpio *__weak variant_bootblock_gpio_table(size_t *size)
{
*size = ARRAY_SIZE(bootblock_gpio_table);
return bootblock_gpio_table;
}

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@@ -3,4 +3,22 @@
#ifndef __BASEBOARD_VARIANTS_H__
#define __BASEBOARD_VARIANTS_H__
#include <amdblocks/gpio_banks.h>
/*
* This function provides base GPIO configuration table. It is typically provided by
* baseboard using a weak implementation. If GPIO configuration for a variant differs
* significantly from the baseboard, then the variant can also provide a strong implementation
* of this function.
*/
const struct soc_amd_gpio *variant_base_gpio_table(size_t *size);
/*
* This function allows variant to override any GPIOs that are different than the base GPIO
* configuration provided by variant_base_gpio_table().
*/
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);
#endif /* __BASEBOARD_VARIANTS_H__ */