LXR uboot/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
  18static 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
  35static 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
  46static 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))
  61                return CMD_RET_FAILURE;
  62
  63        std->cur_bootdev = dev;
  64
  65        return 0;
  66}
  67
  68static 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#ifdef CONFIG_SYS_LONGHELP
 111static char bootdev_help_text[] =
 112        "list [-p]      - list all available bootdevs (-p to probe)\n"
 113        "bootdev select <bd>    - select a bootdev by name | label | seq\n"
 114        "bootdev info [-p]      - show information about a bootdev (-p to probe)";
 115#endif
 116
 117U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
 118        U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
 119        U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
 120        U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));
 121