fs/sandbox/host_bootdev.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Bootdev for sandbox host
   4  *
   5  * Copyright 2021 Google LLC
   6  * Written by Simon Glass <sjg@chromium.org>
   7  */
   8
   9 #include <bootdev.h>
  10 #include <bootflow.h>
  11 #include <bootmeth.h>
  12 #include <dm.h>
  13 #include <fs.h>
  14
  15 static int host_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
  16                              struct bootflow *bflow)
  17 {
  18         int ret;
  19
  20         if (iter->part)
  21                 return log_msg_ret("max", -ESHUTDOWN);
  22
  23         bflow->name = strdup(dev->name);
  24         if (!bflow->name)
  25                 return log_msg_ret("name", -ENOMEM);
  26
  27         ret = bootmeth_check(bflow->method, iter);
  28         if (ret)
  29                 return log_msg_ret("check", ret);
  30
  31         bflow->state = BOOTFLOWST_MEDIA;
  32         bflow->fs_type = FS_TYPE_SANDBOX;
  33
  34         ret = bootmeth_read_bootflow(bflow->method, bflow);
  35         if (ret)
  36                 return log_msg_ret("method", ret);
  37
  38         return 0;
  39 }
  40
  41 struct bootdev_ops host_bootdev_ops = {
  42         .get_bootflow   = host_get_bootflow,
  43 };
  44
  45 static const struct udevice_id host_bootdev_ids[] = {
  46         { .compatible = "sandbox,bootdev-host" },
  47         { }
  48 };
  49
  50 U_BOOT_DRIVER(host_bootdev) = {
  51         .name           = "host_bootdev",
  52         .id             = UCLASS_BOOTDEV,
  53         .ops            = &host_bootdev_ops,
  54         .of_match       = host_bootdev_ids,
  55 };