common/cmd_bootstage.c

   1 /*
   2  * Copyright (c) 2012, Google Inc. All rights reserved.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8
   9 #ifndef CONFIG_BOOTSTAGE_STASH
  10 #define CONFIG_BOOTSTAGE_STASH          -1UL
  11 #define CONFIG_BOOTSTAGE_STASH_SIZE     -1
  12 #endif
  13
  14 static int do_bootstage_report(cmd_tbl_t *cmdtp, int flag, int argc,
  15                                char * const argv[])
  16 {
  17         bootstage_report();
  18
  19         return 0;
  20 }
  21
  22 static int get_base_size(int argc, char * const argv[], ulong *basep,
  23                          ulong *sizep)
  24 {
  25         char *endp;
  26
  27         *basep = CONFIG_BOOTSTAGE_STASH;
  28         *sizep = CONFIG_BOOTSTAGE_STASH_SIZE;
  29         if (argc < 2)
  30                 return 0;
  31         *basep = simple_strtoul(argv[1], &endp, 16);
  32         if (*argv[1] == 0 || *endp != 0)
  33                 return -1;
  34         if (argc == 2)
  35                 return 0;
  36         *sizep = simple_strtoul(argv[2], &endp, 16);
  37         if (*argv[2] == 0 || *endp != 0)
  38                 return -1;
  39
  40         return 0;
  41 }
  42
  43 static int do_bootstage_stash(cmd_tbl_t *cmdtp, int flag, int argc,
  44                               char * const argv[])
  45 {
  46         ulong base, size;
  47         int ret;
  48
  49         if (get_base_size(argc, argv, &base, &size))
  50                 return CMD_RET_USAGE;
  51         if (base == -1UL) {
  52                 printf("No bootstage stash area defined\n");
  53                 return 1;
  54         }
  55
  56         if (0 == strcmp(argv[0], "stash"))
  57                 ret = bootstage_stash((void *)base, size);
  58         else
  59                 ret = bootstage_unstash((void *)base, size);
  60         if (ret)
  61                 return 1;
  62
  63         return 0;
  64 }
  65
  66 static cmd_tbl_t cmd_bootstage_sub[] = {
  67         U_BOOT_CMD_MKENT(report, 2, 1, do_bootstage_report, "", ""),
  68         U_BOOT_CMD_MKENT(stash, 4, 0, do_bootstage_stash, "", ""),
  69         U_BOOT_CMD_MKENT(unstash, 4, 0, do_bootstage_stash, "", ""),
  70 };
  71
  72 /*
  73  * Process a bootstage sub-command
  74  */
  75 static int do_boostage(cmd_tbl_t *cmdtp, int flag, int argc,
  76                        char * const argv[])
  77 {
  78         cmd_tbl_t *c;
  79
  80         /* Strip off leading 'bootstage' command argument */
  81         argc--;
  82         argv++;
  83
  84         c = find_cmd_tbl(argv[0], cmd_bootstage_sub,
  85                          ARRAY_SIZE(cmd_bootstage_sub));
  86
  87         if (c)
  88                 return c->cmd(cmdtp, flag, argc, argv);
  89         else
  90                 return CMD_RET_USAGE;
  91 }
  92
  93
  94 U_BOOT_CMD(bootstage, 4, 1, do_boostage,
  95         "Boot stage command",
  96         " - check boot progress and timing\n"
  97         "report                      - Print a report\n"
  98         "stash [<start> [<size>]]    - Stash data into memory\n"
  99         "unstash [<start> [<size>]]  - Unstash data from memory"
 100 );