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/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <device/pci_ops.h>
#include <device/device.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "onboard.h"
#define FLAG_SPI_WP 0
#define FLAG_REC_MODE 1
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
/* Recovery: GPIO42 = CHP3_REC_MODE# */
{GPIO_REC_MODE, ACTIVE_LOW, !get_recovery_mode_switch(),
"presence"},
/* Hard code the lid switch GPIO to open. */
{100, ACTIVE_HIGH, 1, "lid"},
/* Power Button */
{101, ACTIVE_LOW, get_power_switch(), "power"},
/* Did we load the VGA Option ROM? */
/* -1 indicates that this is a pseudo GPIO */
{-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
};
lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
static bool raw_write_protect_state(void)
{
return get_gpio(GPIO_SPI_WP);
}
static bool raw_recovery_mode_switch(void)
{
return !get_gpio(GPIO_REC_MODE);
}
int get_power_switch(void)
{
const pci_devfn_t dev = PCI_DEV(0, 0x1f, 0);
u16 gen_pmcon_1 = pci_s_read_config32(dev, GEN_PMCON_1);
return (gen_pmcon_1 >> 9) & 1;
}
int get_write_protect_state(void)
{
const pci_devfn_t dev = PCI_DEV(0, 0x1f, 2);
return (pci_s_read_config32(dev, SATA_SP) >> FLAG_SPI_WP) & 1;
}
int get_recovery_mode_switch(void)
{
const pci_devfn_t dev = PCI_DEV(0, 0x1f, 2);
return (pci_s_read_config32(dev, SATA_SP) >> FLAG_REC_MODE) & 1;
}
void init_bootmode_straps(void)
{
u32 flags = 0;
const pci_devfn_t dev = PCI_DEV(0, 0x1f, 2);
/* Write Protect: GPIO68 = CHP3_SPI_WP, active high */
if (raw_write_protect_state())
flags |= (1 << FLAG_SPI_WP);
/* Recovery: GPIO42 = CHP3_REC_MODE#, active low */
if (raw_recovery_mode_switch())
flags |= (1 << FLAG_REC_MODE);
pci_s_write_config32(dev, SATA_SP, flags);
}
static const struct cros_gpio cros_gpios[] = {
CROS_GPIO_REC_AL(GPIO_REC_MODE, CROS_GPIO_DEVICE_NAME),
CROS_GPIO_WP_AH(GPIO_SPI_WP, CROS_GPIO_DEVICE_NAME),
};
const struct cros_gpio *variant_cros_gpios(size_t *num)
{
*num = ARRAY_SIZE(cros_gpios);
return cros_gpios;
}
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