| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <boot/coreboot_tables.h> |
| #include <drivers/tpm/cr50.h> |
| #include <ec/google/chromeec/ec.h> |
| #include <gpio.h> |
| #include <stdbool.h> |
| |
| #include "gpio.h" |
| |
| void setup_chromeos_gpios(void) |
| { |
| /* Set up open-drain pins */ |
| gpio_input(GPIO_SAR_INT_ODL); |
| gpio_input(GPIO_BT_WAKE_AP_ODL); |
| gpio_input(GPIO_WIFI_INT_ODL); |
| gpio_input(GPIO_DPBRDG_INT_ODL); |
| gpio_input(GPIO_EDPBRDG_INT_ODL); |
| gpio_input(GPIO_EC_AP_HPD_OD); |
| gpio_input(GPIO_TCHPAD_INT_ODL); |
| gpio_input(GPIO_TCHSCR_INT_1V8_ODL); |
| gpio_input(GPIO_EC_AP_INT_ODL); |
| gpio_input(GPIO_EC_IN_RW_ODL); |
| gpio_input(GPIO_GSC_AP_INT_ODL); |
| gpio_input(GPIO_AP_WP_ODL); |
| gpio_input(GPIO_HP_INT_ODL); |
| gpio_input(GPIO_PEN_EJECT_OD); |
| gpio_input(GPIO_UCAM_DET_ODL); |
| |
| /* Set up GPIOs */ |
| gpio_output(GPIO_RESET, 0); |
| gpio_output(GPIO_XHCI_DONE, 0); |
| gpio_output(GPIO_EN_SPK, 0); |
| } |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| {GPIO_EC_AP_INT_ODL.id, ACTIVE_LOW, -1, "EC interrupt"}, |
| {GPIO_EC_IN_RW_ODL.id, ACTIVE_LOW, -1, "EC in RW"}, |
| {GPIO_GSC_AP_INT_ODL.id, ACTIVE_HIGH, -1, "TPM interrupt"}, |
| {GPIO_EN_SPK.id, ACTIVE_HIGH, -1, "speaker enable"}, |
| }; |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| int get_ec_is_trusted(void) |
| { |
| uint32_t rev; |
| bool has_cr50 = false; |
| |
| /* |
| * Kingler and Krabby's rev 0 boards both use Cr50 instead of Ti50. In order to share |
| * the same firmware with newer rev, get the board rev from CBI, and ignore |
| * TPM_GOOGLE_TI50 when rev is 0. |
| */ |
| if (CONFIG(BOARD_GOOGLE_KINGLER) || CONFIG(BOARD_GOOGLE_KRABBY)) { |
| if (google_chromeec_cbi_get_board_version(&rev) == 0 && rev == 0) |
| has_cr50 = true; |
| } |
| |
| /* With Ti50, VB2_CONTEXT_EC_TRUSTED should be set according to the boot mode. */ |
| if (CONFIG(TPM_GOOGLE_TI50) && !has_cr50) |
| return 0; |
| |
| /* EC is trusted if not in RW. This is active low. */ |
| return !!gpio_get(GPIO_EC_IN_RW_ODL); |
| } |
| |
| int cr50_plat_irq_status(void) |
| { |
| return gpio_eint_poll(GPIO_GSC_AP_INT_ODL); |
| } |