mb/google/dedede: Add GPIO stubs

Add stubbed out GPIO configuration and perform GPIO initialization
during bootblock and ramstage.

BUG=b:144768001
TEST=Build Test

Change-Id: I1397b6a433e5046650f64f7eb9a84c51eb0c7441
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38278
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Karthikeyan Ramasubramanian 2020-01-06 22:02:01 -07:00 committed by Furquan Shaikh
parent da60958ae3
commit 85c52c5d97
8 changed files with 78 additions and 2 deletions

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@ -32,4 +32,8 @@ config UART_FOR_CONSOLE
int
default 2
config VARIANT_DIR
string
default "dedede" if BOARD_GOOGLE_DEDEDE
endif #BOARD_GOOGLE_BASEBOARD_DEDEDE

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@ -4,3 +4,7 @@ ramstage-y += mainboard.c
subdirs-y += variants/baseboard
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/baseboard/include
VARIANT_DIR:=$(call strip_quotes,$(CONFIG_VARIANT_DIR))
subdirs-y += variants/$(VARIANT_DIR)
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/include

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@ -6,9 +6,14 @@
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <baseboard/variants.h>
#include <bootblock_common.h>
void bootblock_mainboard_init(void)
{
/* TODO: Perform mainboard initialization */
const struct pad_config *pads;
size_t num;
pads = variant_early_gpio_table(&num);
gpio_configure_pads(pads, num);
}

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@ -6,11 +6,16 @@
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <baseboard/variants.h>
#include <device/device.h>
static void mainboard_init(void *chip_info)
{
/* TODO: Perform mainboard initialization */
const struct pad_config *pads;
size_t num;
pads = variant_gpio_table(&num);
gpio_configure_pads(pads, num);
}
static void mainboard_enable(struct device *dev)

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@ -0,0 +1,5 @@
bootblock-y += gpio.c
ramstage-y += gpio.c
smm-y += gpio.c

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@ -0,0 +1,33 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2020 The coreboot project Authors.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <baseboard/gpio.h>
#include <baseboard/variants.h>
#include <commonlib/helpers.h>
/* Pad configuration in ramstage*/
static const struct pad_config gpio_table[] = {
/* ToDo: Fill gpio configuration */
};
/* Early pad configuration in bootblock */
static const struct pad_config early_gpio_table[] = {
/* ToDo: Fill early gpio configuration */
};
const struct pad_config *__weak variant_gpio_table(size_t *num)
{
*num = ARRAY_SIZE(gpio_table);
return gpio_table;
}
const struct pad_config *__weak variant_early_gpio_table(size_t *num)
{
*num = ARRAY_SIZE(early_gpio_table);
return early_gpio_table;
}

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@ -12,4 +12,10 @@
#include <soc/gpio.h>
#include <stdint.h>
/* The next set of functions return the gpio table and fill in the number of
* entries for each table. */
const struct pad_config *variant_gpio_table(size_t *num);
const struct pad_config *variant_early_gpio_table(size_t *num);
#endif /*__BASEBOARD_VARIANTS_H__ */

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@ -0,0 +1,14 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2020 The coreboot project Authors.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef MAINBOARD_GPIO_H
#define MAINBOARD_GPIO_H
#include <baseboard/gpio.h>
#endif /* MAINBOARD_GPIO_H */