common/cmd_spl.c

   1 /*
   2  * Copyright (C) 2011
   3  * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <command.h>
  26 #include <cmd_spl.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 static const char **subcmd_list[] = {
  31
  32         [SPL_EXPORT_FDT] = (const char * []) {
  33 #ifdef CONFIG_OF_LIBFDT
  34                 "start",
  35                 "loados",
  36         #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  37                 "ramdisk",
  38         #endif
  39                 "fdt",
  40                 "cmdline",
  41                 "bdt",
  42                 "prep",
  43 #endif
  44                 NULL,
  45         },
  46         [SPL_EXPORT_ATAGS] = (const char * []) {
  47 #if defined(CONFIG_SETUP_MEMORY_TAGS) || \
  48         defined(CONFIG_CMDLINE_TAG) || \
  49         defined(CONFIG_INITRD_TAG) || \
  50         defined(CONFIG_SERIAL_TAG) || \
  51         defined(CONFIG_REVISION_TAG)
  52                 "start",
  53                 "loados",
  54 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  55                 "ramdisk",
  56 #endif
  57                 "cmdline",
  58                 "bdt",
  59                 "prep",
  60 #endif
  61                 NULL,
  62         },
  63         NULL
  64 };
  65
  66 /* Calls bootm with the parameters given */
  67 static int call_bootm(int argc, char * const argv[], const char *subcommand[])
  68 {
  69         char *bootm_argv[5];
  70
  71         int i = 0;
  72         int ret = 0;
  73         int j;
  74
  75         /* create paramter array */
  76         bootm_argv[0] = "do_bootm";
  77         switch (argc) {
  78         case 3:
  79                 bootm_argv[4] = argv[2]; /* fdt addr */
  80         case 2:
  81                 bootm_argv[3] = argv[1]; /* initrd addr */
  82         case 1:
  83                 bootm_argv[2] = argv[0]; /* kernel addr */
  84         }
  85
  86
  87         /*
  88          * - do the work -
  89          * exec subcommands of do_bootm to init the images
  90          * data structure
  91          */
  92         while (subcommand[i] != NULL) {
  93                 bootm_argv[1] = (char *)subcommand[i];
  94                 debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
  95                 for (j = 0; j < argc; j++)
  96                         debug("%s ", bootm_argv[j + 2]);
  97                 debug("\n");
  98
  99                 ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
 100                         bootm_argv);
 101                 debug("Subcommand retcode: %d\n", ret);
 102                 i++;
 103         }
 104
 105         if (ret) {
 106                 printf("ERROR prep subcommand failed!\n");
 107                 return -1;
 108         }
 109
 110         return 0;
 111 }
 112
 113 static cmd_tbl_t cmd_spl_export_sub[] = {
 114         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
 115         U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
 116 };
 117
 118 static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 119 {
 120         const cmd_tbl_t *c;
 121
 122         if (argc < 2) /* no subcommand */
 123                 return cmd_usage(cmdtp);
 124
 125         c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
 126                 ARRAY_SIZE(cmd_spl_export_sub));
 127         if ((c) && ((int)c->cmd <= SPL_EXPORT_LAST)) {
 128                 argc -= 2;
 129                 argv += 2;
 130                 if (call_bootm(argc, argv, subcmd_list[(int)c->cmd]))
 131                         return -1;
 132                 switch ((int)c->cmd) {
 133 #ifdef CONFIG_OF_LIBFDT
 134                 case SPL_EXPORT_FDT:
 135                         printf("Argument image is now in RAM: 0x%p\n",
 136                                 (void *)images.ft_addr);
 137                         break;
 138 #endif
 139                 case SPL_EXPORT_ATAGS:
 140                         printf("Argument image is now in RAM at: 0x%p\n",
 141                                 (void *)gd->bd->bi_boot_params);
 142                         break;
 143                 }
 144         } else {
 145                 /* Unrecognized command */
 146                 return cmd_usage(cmdtp);
 147         }
 148
 149         return 0;
 150 }
 151
 152 static cmd_tbl_t cmd_spl_sub[] = {
 153         U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
 154 };
 155
 156 static int do_spl(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 157 {
 158         const cmd_tbl_t *c;
 159         int cmd;
 160
 161         if (argc < 2) /* no subcommand */
 162                 return cmd_usage(cmdtp);
 163
 164         c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
 165         if (c) {
 166                 cmd = (int)c->cmd;
 167                 switch (cmd) {
 168                 case SPL_EXPORT:
 169                         argc--;
 170                         argv++;
 171                         if (spl_export(cmdtp, flag, argc, argv))
 172                                 printf("Subcommand failed\n");
 173                         break;
 174                 default:
 175                         /* unrecognized command */
 176                         return cmd_usage(cmdtp);
 177                 }
 178         } else {
 179                 /* Unrecognized command */
 180                 return cmd_usage(cmdtp);
 181         }
 182         return 0;
 183 }
 184
 185 U_BOOT_CMD(
 186         spl, 6 , 1, do_spl, "SPL configuration",
 187         "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
 188         "\timg\t\t\"atags\" or \"fdt\"\n"
 189         "\tkernel_addr\taddress where a kernel image is stored.\n"
 190         "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
 191         "\tinitrd_addr\taddress of initial ramdisk\n"
 192         "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
 193         "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
 194         );