| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <boot/coreboot_tables.h> |
| #include <drivers/tpm/cr50.h> |
| #include <gpio.h> |
| |
| #include "board.h" |
| |
| static const uint32_t wp_polarity = CONFIG(GRU_BASEBOARD_SCARLET) ? |
| ACTIVE_LOW : ACTIVE_HIGH; |
| |
| int get_write_protect_state(void) |
| { |
| return gpio_get(GPIO_WP) ^ !wp_polarity; |
| } |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| #if CONFIG(GRU_BASEBOARD_SCARLET) |
| {GPIO_BACKLIGHT.raw, ACTIVE_HIGH, -1, "backlight"}, |
| #endif |
| {GPIO_EC_IN_RW.raw, ACTIVE_HIGH, -1, "EC in RW"}, |
| {GPIO_EC_IRQ.raw, ACTIVE_LOW, -1, "EC interrupt"}, |
| {GPIO_RESET.raw, ACTIVE_HIGH, -1, "reset"}, |
| {GPIO_SPK_PA_EN.raw, ACTIVE_HIGH, -1, "speaker enable"}, |
| #if CONFIG(GRU_HAS_TPM2) |
| {GPIO_TPM_IRQ.raw, ACTIVE_HIGH, -1, "TPM interrupt"}, |
| #endif |
| }; |
| |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| void setup_chromeos_gpios(void) |
| { |
| if (CONFIG(GRU_BASEBOARD_SCARLET)) |
| gpio_input(GPIO_WP); |
| else |
| gpio_input_pullup(GPIO_WP); |
| gpio_input_pullup(GPIO_EC_IN_RW); |
| gpio_input_pullup(GPIO_EC_IRQ); |
| } |
| |
| #if CONFIG(GRU_HAS_TPM2) |
| int cr50_plat_irq_status(void) |
| { |
| return gpio_irq_status(GPIO_TPM_IRQ); |
| } |
| #endif |
| |
| int get_ec_is_trusted(void) |
| { |
| /* EC is trusted if not in RW. */ |
| return !gpio_get(GPIO_EC_IN_RW); |
| } |