| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <boot/coreboot_tables.h> |
| #include <device/mmio.h> |
| #include <gpio.h> |
| #include <soc/gpio.h> |
| #include <types.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| /* The WP status pin lives on MF_ISH_GPIO_4 */ |
| #define WP_STATUS_PAD_CFG0 0x4838 |
| #define WP_STATUS_PAD_CFG1 0x483C |
| |
| #define WP_GPIO GP_E_22 |
| |
| #define ACTIVE_LOW 0 |
| #define ACTIVE_HIGH 1 |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| {-1, ACTIVE_HIGH, get_lid_switch(), "lid"}, |
| {-1, ACTIVE_HIGH, 0, "power"}, |
| {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"}, |
| }; |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| int get_write_protect_state(void) |
| { |
| /* |
| * The vboot loader queries this function in romstage. The GPIOs have |
| * not been set up yet as that configuration is done in ramstage. |
| * Configuring this GPIO as input so that there isn't any ambiguity |
| * in the reading. |
| */ |
| #if ENV_ROMSTAGE |
| if (CONFIG(BOARD_GOOGLE_CYAN)) { |
| write32((void *)(COMMUNITY_GPEAST_BASE + WP_STATUS_PAD_CFG0), |
| (PAD_PULL_UP_20K | PAD_GPIO_ENABLE | PAD_CONFIG0_GPI_DEFAULT)); |
| write32((void *)(COMMUNITY_GPEAST_BASE + WP_STATUS_PAD_CFG1), |
| PAD_CONFIG1_DEFAULT0); |
| } else { |
| gpio_input_pullup(WP_GPIO); |
| } |
| #endif |
| |
| /* WP is enabled when the pin is reading high. */ |
| if (CONFIG(BOARD_GOOGLE_CYAN)) { |
| return (read32((void *)(COMMUNITY_GPEAST_BASE + WP_STATUS_PAD_CFG0)) |
| & PAD_VAL_HIGH); |
| } else { |
| return !!gpio_get(WP_GPIO); |
| } |
| } |
| |
| static const struct cros_gpio cros_gpios[] = { |
| CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME), |
| CROS_GPIO_WP_AH(0x10013, CROS_GPIO_DEVICE_NAME), |
| }; |
| |
| const struct cros_gpio *variant_cros_gpios(size_t *num) |
| { |
| *num = ARRAY_SIZE(cros_gpios); |
| return cros_gpios; |
| } |
| |
| int get_ec_is_trusted(void) |
| { |
| /* Do not have a Chrome EC involved in entering recovery mode; |
| Always return trusted. */ |
| return 1; |
| } |