cmd/spl.c

   1 /*
   2  * Copyright (C) 2011
   3  * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <cmd_spl.h>
  11
  12 DECLARE_GLOBAL_DATA_PTR;
  13
  14 static const char **subcmd_list[] = {
  15
  16         [SPL_EXPORT_FDT] = (const char * []) {
  17 #ifdef CONFIG_OF_LIBFDT
  18                 "start",
  19                 "loados",
  20         #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  21                 "ramdisk",
  22         #endif
  23                 "fdt",
  24                 "cmdline",
  25                 "bdt",
  26                 "prep",
  27 #endif
  28                 NULL,
  29         },
  30         [SPL_EXPORT_ATAGS] = (const char * []) {
  31 #if defined(CONFIG_SETUP_MEMORY_TAGS) || \
  32         defined(CONFIG_CMDLINE_TAG) || \
  33         defined(CONFIG_INITRD_TAG) || \
  34         defined(CONFIG_SERIAL_TAG) || \
  35         defined(CONFIG_REVISION_TAG)
  36                 "start",
  37                 "loados",
  38 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  39                 "ramdisk",
  40 #endif
  41                 "cmdline",
  42                 "bdt",
  43                 "prep",
  44 #endif
  45                 NULL,
  46         },
  47         NULL
  48 };
  49
  50 /* Calls bootm with the parameters given */
  51 static int call_bootm(int argc, char * const argv[], const char *subcommand[])
  52 {
  53         char *bootm_argv[5];
  54
  55         int i = 0;
  56         int ret = 0;
  57         int j;
  58
  59         /* create paramter array */
  60         bootm_argv[0] = "do_bootm";
  61         switch (argc) {
  62         case 3:
  63                 bootm_argv[4] = argv[2]; /* fdt addr */
  64         case 2:
  65                 bootm_argv[3] = argv[1]; /* initrd addr */
  66         case 1:
  67                 bootm_argv[2] = argv[0]; /* kernel addr */
  68         }
  69
  70
  71         /*
  72          * - do the work -
  73          * exec subcommands of do_bootm to init the images
  74          * data structure
  75          */
  76         while (subcommand[i] != NULL) {
  77                 bootm_argv[1] = (char *)subcommand[i];
  78                 debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
  79                 for (j = 0; j < argc; j++)
  80                         debug("%s ", bootm_argv[j + 2]);
  81                 debug("\n");
  82
  83                 ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
  84                         bootm_argv);
  85                 debug("Subcommand retcode: %d\n", ret);
  86                 i++;
  87         }
  88
  89         if (ret) {
  90                 printf("ERROR prep subcommand failed!\n");
  91                 return -1;
  92         }
  93
  94         return 0;
  95 }
  96
  97 static cmd_tbl_t cmd_spl_export_sub[] = {
  98         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
  99         U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
 100 };
 101
 102 static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 103 {
 104         const cmd_tbl_t *c;
 105
 106         if (argc < 2) /* no subcommand */
 107                 return cmd_usage(cmdtp);
 108
 109         c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
 110                 ARRAY_SIZE(cmd_spl_export_sub));
 111         if ((c) && ((int)c->cmd <= SPL_EXPORT_LAST)) {
 112                 argc -= 2;
 113                 argv += 2;
 114                 if (call_bootm(argc, argv, subcmd_list[(int)c->cmd]))
 115                         return -1;
 116                 switch ((int)c->cmd) {
 117 #ifdef CONFIG_OF_LIBFDT
 118                 case SPL_EXPORT_FDT:
 119                         printf("Argument image is now in RAM: 0x%p\n",
 120                                 (void *)images.ft_addr);
 121                         break;
 122 #endif
 123                 case SPL_EXPORT_ATAGS:
 124                         printf("Argument image is now in RAM at: 0x%p\n",
 125                                 (void *)gd->bd->bi_boot_params);
 126                         break;
 127                 }
 128         } else {
 129                 /* Unrecognized command */
 130                 return cmd_usage(cmdtp);
 131         }
 132
 133         return 0;
 134 }
 135
 136 static cmd_tbl_t cmd_spl_sub[] = {
 137         U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
 138 };
 139
 140 static int do_spl(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 141 {
 142         const cmd_tbl_t *c;
 143         int cmd;
 144
 145         if (argc < 2) /* no subcommand */
 146                 return cmd_usage(cmdtp);
 147
 148         c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
 149         if (c) {
 150                 cmd = (int)c->cmd;
 151                 switch (cmd) {
 152                 case SPL_EXPORT:
 153                         argc--;
 154                         argv++;
 155                         if (spl_export(cmdtp, flag, argc, argv))
 156                                 printf("Subcommand failed\n");
 157                         break;
 158                 default:
 159                         /* unrecognized command */
 160                         return cmd_usage(cmdtp);
 161                 }
 162         } else {
 163                 /* Unrecognized command */
 164                 return cmd_usage(cmdtp);
 165         }
 166         return 0;
 167 }
 168
 169 U_BOOT_CMD(
 170         spl, 6 , 1, do_spl, "SPL configuration",
 171         "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
 172         "\timg\t\t\"atags\" or \"fdt\"\n"
 173         "\tkernel_addr\taddress where a kernel image is stored.\n"
 174         "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
 175         "\tinitrd_addr\taddress of initial ramdisk\n"
 176         "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
 177         "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
 178         );