payloads/libpayload/libc/lp_vboot.c

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2
   3 #include <libpayload-config.h>
   4 #include <arch/virtual.h>
   5 #include <assert.h>
   6 #include <libpayload.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <sysinfo.h>
  10 #include <vb2_api.h>
  11 #include <lp_vboot.h>
  12
  13 struct vb2_context *vboot_get_context(void)
  14 {
  15         static struct vb2_context *ctx;
  16
  17         if (ctx)
  18                 return ctx;
  19
  20         die_if(lib_sysinfo.vboot_workbuf == 0, "vboot workbuf pointer is not set\n");
  21
  22         /* Use the firmware verification workbuf from coreboot. */
  23         vb2_error_t rv = vb2api_reinit(phys_to_virt(lib_sysinfo.vboot_workbuf), &ctx);
  24
  25         die_if(rv, "vboot workbuf could not be initialized, error: %#x\n", rv);
  26
  27         return ctx;
  28 }
  29
  30 void vboot_fail_and_reboot(struct vb2_context *ctx, uint8_t reason, uint8_t subcode)
  31 {
  32         if (reason)
  33                 vb2api_fail(ctx, reason, subcode);
  34
  35         printf("vboot: reboot requested (reason: %#x, subcode %#x)", reason, subcode);
  36         vb2ex_commit_data(ctx);
  37         reboot();
  38 }
  39
  40 int vboot_recovery_mode_enabled(void)
  41 {
  42         return !!(vboot_get_context()->flags & VB2_CONTEXT_RECOVERY_MODE);
  43 }