| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <boot/coreboot_tables.h> |
| #include <device/pci_ops.h> |
| #include <console/console.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 "ec.h" |
| #include <ec/quanta/it8518/ec.h> |
| #include "onboard.h" |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| /* Lid Switch: Virtual switch */ |
| {-1, ACTIVE_HIGH, get_lid_switch(), "lid"}, |
| |
| /* Power Button: Virtual switch */ |
| /* Hard-code value to de-asserted */ |
| {-1, ACTIVE_HIGH, 0, "power"}, |
| |
| /* Was VGA Option ROM loaded? */ |
| /* -1 indicates that this is a pseudo GPIO */ |
| {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"}, |
| |
| /* EC is in RW mode when it isn't in recovery mode. */ |
| {-1, ACTIVE_HIGH, !get_recovery_mode_switch(), "ec_in_rw"} |
| }; |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| int get_write_protect_state(void) |
| { |
| return !get_gpio(GPIO_SPI_WP); |
| } |
| |
| int get_lid_switch(void) |
| { |
| /* hard-code to open */ |
| return 1; |
| } |
| |
| /* |
| * The recovery-switch is virtual on Stout and is handled via the EC. |
| * Stout recovery mode is only valid if RTC_PWR_STS is set and the EC |
| * indicated the recovery keys were pressed. We use a global flag for |
| * rec_mode to be used after RTC_POWER_STS has been cleared. |
| * Note, rec_mode is the only time the EC is in RO mode, otherwise, RW. |
| */ |
| int get_recovery_mode_switch(void) |
| { |
| static int ec_in_rec_mode; |
| static int ec_rec_flag_good; |
| |
| if (ec_rec_flag_good) |
| return ec_in_rec_mode; |
| |
| const pci_devfn_t dev = PCI_DEV(0, 0x1f, 0); |
| u8 reg8 = pci_s_read_config8(dev, GEN_PMCON_3); |
| |
| u8 ec_status = ec_read(EC_STATUS_REG); |
| |
| printk(BIOS_SPEW,"%s: EC status:%#x RTC_BAT: %x\n", |
| __func__, ec_status, reg8 & RTC_BATTERY_DEAD); |
| |
| ec_in_rec_mode = (((reg8 & RTC_BATTERY_DEAD) != 0) && |
| ((ec_status & 0x3) == EC_IN_RECOVERY_MODE)); |
| ec_rec_flag_good = 1; |
| return ec_in_rec_mode; |
| } |
| |
| static const struct cros_gpio cros_gpios[] = { |
| CROS_GPIO_REC_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME), |
| CROS_GPIO_WP_AL(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; |
| } |