/* SPDX-License-Identifier: GPL-2.0-only */ #include <bootmode.h> #include <boot/coreboot_tables.h> #include <soc/gpio.h> #include <types.h> #include <vendorcode/google/chromeos/chromeos.h> /* The WP status pin lives on GPIO_SSUS_6 which is pad 36 in the SUS well. */ #define WP_STATUS_PAD 36 /* The EC_IN_RW lives on SCGPIO59 */ #define EC_IN_RW_PAD 59 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. The * hardware defaults to an input but there is a 20K pulldown. Externally * there is a 10K pullup. Disable the internal pull in romstage so that * there isn't any ambiguity in the reading. */ if (ENV_ROMSTAGE_OR_BEFORE) ssus_disable_internal_pull(WP_STATUS_PAD); /* WP is enabled when the pin is reading high. */ return ssus_get_gpio(WP_STATUS_PAD); } static const struct cros_gpio cros_gpios[] = { CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME), CROS_GPIO_WP_AH(0x2006, CROS_GPIO_DEVICE_NAME), }; DECLARE_CROS_GPIOS(cros_gpios); int get_ec_is_trusted(void) { /* EC is trusted if not in RW. */ return !score_get_gpio(EC_IN_RW_PAD); }