src/mainboard/google/butterfly/chromeos.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootmode.h>
   4 #include <boot/coreboot_tables.h>
   5 #include <device/device.h>
   6
   7 #include <southbridge/intel/bd82x6x/pch.h>
   8 #include <southbridge/intel/common/gpio.h>
   9 #include <ec/quanta/ene_kb3940q/ec.h>
  10 #include <types.h>
  11 #include <vendorcode/google/chromeos/chromeos.h>
  12 #include "ec.h"
  13 #include "onboard.h"
  14
  15 void fill_lb_gpios(struct lb_gpios *gpios)
  16 {
  17         struct lb_gpio chromeos_gpios[] = {
  18                 /* lid switch value from EC */
  19                 {-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
  20
  21                 /* Power Button - Hardcode Low as power button may still be
  22                  * pressed when read here.*/
  23                 {-1, ACTIVE_HIGH, 0, "power"},
  24
  25                 /* Was VGA Option ROM loaded? */
  26                 /* -1 indicates that this is a pseudo GPIO */
  27                 {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
  28         };
  29         lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
  30 }
  31
  32 int get_write_protect_state(void)
  33 {
  34         return !get_gpio(WP_GPIO);
  35 }
  36
  37 int get_lid_switch(void)
  38 {
  39         return (ec_mem_read(EC_HW_GPI_STATUS) >> EC_GPI_LID_STAT_BIT) & 1;
  40 }
  41
  42 /* FIXME: VBOOT reads this in ENV_ROMSTAGE. */
  43 int get_recovery_mode_switch(void)
  44 {
  45         if (ENV_RAMSTAGE)
  46                 return (ec_mem_read(EC_CODE_STATE) == EC_COS_EC_RO);
  47
  48         return 0;
  49 }
  50
  51 static const struct cros_gpio cros_gpios[] = {
  52         CROS_GPIO_REC_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
  53         CROS_GPIO_WP_AL(WP_GPIO, CROS_GPIO_DEVICE_NAME),
  54 };
  55 DECLARE_CROS_GPIOS(cros_gpios);
  56
  57 int get_ec_is_trusted(void)
  58 {
  59         /* Do not have a Chrome EC involved in entering recovery mode;
  60            Always return trusted. */
  61         return 1;
  62 }