cmd_spl.c
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/*
* Copyright (C) 2011
* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <cmd_spl.h>
DECLARE_GLOBAL_DATA_PTR;
static const char **subcmd_list[] = {
[SPL_EXPORT_FDT] = (const char * []) {
#ifdef CONFIG_OF_LIBFDT
"start",
"loados",
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
"ramdisk",
#endif
"fdt",
"cmdline",
"bdt",
"prep",
#endif
NULL,
},
[SPL_EXPORT_ATAGS] = (const char * []) {
#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
defined(CONFIG_CMDLINE_TAG) || \
defined(CONFIG_INITRD_TAG) || \
defined(CONFIG_SERIAL_TAG) || \
defined(CONFIG_REVISION_TAG)
"start",
"loados",
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
"ramdisk",
#endif
"cmdline",
"bdt",
"prep",
#endif
NULL,
},
NULL
};
/* Calls bootm with the parameters given */
static int call_bootm(int argc, char * const argv[], const char *subcommand[])
{
char *bootm_argv[5];
int i = 0;
int ret = 0;
int j;
/* create paramter array */
bootm_argv[0] = "do_bootm";
switch (argc) {
case 3:
bootm_argv[4] = argv[2]; /* fdt addr */
case 2:
bootm_argv[3] = argv[1]; /* initrd addr */
case 1:
bootm_argv[2] = argv[0]; /* kernel addr */
}
/*
* - do the work -
* exec subcommands of do_bootm to init the images
* data structure
*/
while (subcommand[i] != NULL) {
bootm_argv[1] = (char *)subcommand[i];
debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
for (j = 0; j < argc; j++)
debug("%s ", bootm_argv[j + 2]);
debug("\n");
ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
bootm_argv);
debug("Subcommand retcode: %d\n", ret);
i++;
}
if (ret) {
printf("ERROR prep subcommand failed!\n");
return -1;
}
return 0;
}
static cmd_tbl_t cmd_spl_export_sub[] = {
U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
};
static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const cmd_tbl_t *c;
if (argc < 2) /* no subcommand */
return cmd_usage(cmdtp);
c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
ARRAY_SIZE(cmd_spl_export_sub));
if ((c) && ((int)c->cmd <= SPL_EXPORT_LAST)) {
argc -= 2;
argv += 2;
if (call_bootm(argc, argv, subcmd_list[(int)c->cmd]))
return -1;
switch ((int)c->cmd) {
#ifdef CONFIG_OF_LIBFDT
case SPL_EXPORT_FDT:
printf("Argument image is now in RAM: 0x%p\n",
(void *)images.ft_addr);
break;
#endif
case SPL_EXPORT_ATAGS:
printf("Argument image is now in RAM at: 0x%p\n",
(void *)gd->bd->bi_boot_params);
break;
}
} else {
/* Unrecognized command */
return cmd_usage(cmdtp);
}
return 0;
}
static cmd_tbl_t cmd_spl_sub[] = {
U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
};
static int do_spl(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const cmd_tbl_t *c;
int cmd;
if (argc < 2) /* no subcommand */
return cmd_usage(cmdtp);
c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
if (c) {
cmd = (int)c->cmd;
switch (cmd) {
case SPL_EXPORT:
argc--;
argv++;
if (spl_export(cmdtp, flag, argc, argv))
printf("Subcommand failed\n");
break;
default:
/* unrecognized command */
return cmd_usage(cmdtp);
}
} else {
/* Unrecognized command */
return cmd_usage(cmdtp);
}
return 0;
}
U_BOOT_CMD(
spl, 6 , 1, do_spl, "SPL configuration",
"export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
"\timg\t\t\"atags\" or \"fdt\"\n"
"\tkernel_addr\taddress where a kernel image is stored.\n"
"\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
"\tinitrd_addr\taddress of initial ramdisk\n"
"\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
"\tfdt_addr\tin case of fdt, the address of the device tree.\n"
);