src/mainboard/emulation/qemu-i440fx/bootmode.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <bootmode.h>
   4 #include <console/console.h>
   5 #include "fw_cfg.h"
   6
   7 /*
   8  * Enable recovery mode with fw_cfg option to qemu:
   9  *   -fw_cfg name=opt/cros/recovery,string=1
  10  */
  11 int get_recovery_mode_switch(void)
  12 {
  13         FWCfgFile f;
  14
  15         if (!fw_cfg_check_file(&f, "opt/cros/recovery")) {
  16                 uint8_t rec_mode;
  17                 if (f.size != 1) {
  18                         printk(BIOS_ERR, "opt/cros/recovery invalid size %d\n", f.size);
  19                         return 0;
  20                 }
  21                 fw_cfg_get(f.select, &rec_mode, f.size);
  22                 if (rec_mode == '1') {
  23                         printk(BIOS_INFO, "Recovery is enabled.\n");
  24                         return 1;
  25                 }
  26         }
  27
  28         return 0;
  29 }