cmd/bootdev.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * 'bootdev' command
   4  *
   5  * Copyright 2021 Google LLC
   6  * Written by Simon Glass <sjg@chromium.org>
   7  */
   8
   9 #include <common.h>
  10 #include <bootdev.h>
  11 #include <bootflow.h>
  12 #include <bootstd.h>
  13 #include <command.h>
  14 #include <dm.h>
  15 #include <dm/device-internal.h>
  16 #include <dm/uclass-internal.h>
  17
  18 static int bootdev_check_state(struct bootstd_priv **stdp)
  19 {
  20         struct bootstd_priv *std;
  21         int ret;
  22
  23         ret = bootstd_get_priv(&std);
  24         if (ret)
  25                 return ret;
  26         if (!std->cur_bootdev) {
  27                 printf("Please use 'bootdev select' first\n");
  28                 return -ENOENT;
  29         }
  30         *stdp = std;
  31
  32         return 0;
  33 }
  34
  35 static int do_bootdev_list(struct cmd_tbl *cmdtp, int flag, int argc,
  36                            char *const argv[])
  37 {
  38         bool probe;
  39
  40         probe = argc >= 2 && !strcmp(argv[1], "-p");
  41         bootdev_list(probe);
  42
  43         return 0;
  44 }
  45
  46 static int do_bootdev_select(struct cmd_tbl *cmdtp, int flag, int argc,
  47                              char *const argv[])
  48 {
  49         struct bootstd_priv *std;
  50         struct udevice *dev;
  51         int ret;
  52
  53         ret = bootstd_get_priv(&std);
  54         if (ret)
  55                 return CMD_RET_FAILURE;
  56         if (argc < 2) {
  57                 std->cur_bootdev = NULL;
  58                 return 0;
  59         }
  60         if (bootdev_find_by_any(argv[1], &dev, NULL))
  61                 return CMD_RET_FAILURE;
  62
  63         std->cur_bootdev = dev;
  64
  65         return 0;
  66 }
  67
  68 static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc,
  69                            char *const argv[])
  70 {
  71         struct bootstd_priv *priv;
  72         struct bootflow *bflow;
  73         int ret, i, num_valid;
  74         struct udevice *dev;
  75         bool probe;
  76
  77         probe = argc >= 2 && !strcmp(argv[1], "-p");
  78
  79         ret = bootdev_check_state(&priv);
  80         if (ret)
  81                 return CMD_RET_FAILURE;
  82
  83         dev = priv->cur_bootdev;
  84
  85         /* Count the number of bootflows, including how many are valid*/
  86         num_valid = 0;
  87         for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
  88              !ret;
  89              ret = bootdev_next_bootflow(&bflow), i++)
  90                 num_valid += bflow->state == BOOTFLOWST_READY;
  91
  92         /*
  93          * Prove the device, if requested, otherwise assume that there is no
  94          * error
  95          */
  96         ret = 0;
  97         if (probe)
  98                 ret = device_probe(dev);
  99
 100         printf("Name:      %s\n", dev->name);
 101         printf("Sequence:  %d\n", dev_seq(dev));
 102         printf("Status:    %s\n", ret ? simple_itoa(-ret) : device_active(dev) ?
 103                 "Probed" : "OK");
 104         printf("Uclass:    %s\n", dev_get_uclass_name(dev_get_parent(dev)));
 105         printf("Bootflows: %d (%d valid)\n", i, num_valid);
 106
 107         return 0;
 108 }
 109
 110 static int do_bootdev_hunt(struct cmd_tbl *cmdtp, int flag, int argc,
 111                            char *const argv[])
 112 {
 113         struct bootstd_priv *priv;
 114         const char *spec = NULL;
 115         bool list = false;
 116         int ret = 0;
 117
 118         if (argc >= 2) {
 119                 if (!strcmp(argv[1], "-l"))
 120                         list = true;
 121                 else
 122                         spec = argv[1];
 123         }
 124
 125         ret = bootstd_get_priv(&priv);
 126         if (ret)
 127                 return ret;
 128         if (list) {
 129                 bootdev_list_hunters(priv);
 130         } else {
 131                 ret = bootdev_hunt(spec, true);
 132                 if (ret) {
 133                         printf("Failed (err=%dE)\n", ret);
 134
 135                         return CMD_RET_FAILURE;
 136                 }
 137         }
 138
 139         return 0;
 140 }
 141
 142 U_BOOT_LONGHELP(bootdev,
 143         "list [-p]         - list all available bootdevs (-p to probe)\n"
 144         "bootdev hunt [-l|<spec>]  - use hunt drivers to find bootdevs\n"
 145         "bootdev select <bd>       - select a bootdev by name | label | seq\n"
 146         "bootdev info [-p]         - show information about a bootdev (-p to probe)");
 147
 148 U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
 149         U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
 150         U_BOOT_SUBCMD_MKENT(hunt, 2, 1, do_bootdev_hunt),
 151         U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
 152         U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));