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// SPDX-License-Identifier: GPL-2.0+
#include <command.h>
#include <env.h>
#include <fs.h>
#include <pxe_utils.h>
#include <vsprintf.h>
/**
* struct sysboot_info - useful information for sysboot helpers
*
* @fstype: Filesystem type (FS_TYPE_...)
* @ifname: Interface name (e.g. "ide", "scsi")
* @dev_part_str is in the format:
* <dev>.<hw_part>:<part> where <dev> is the device number,
* <hw_part> is the optional hardware partition number and
* <part> is the partition number
*/
struct sysboot_info {
int fstype;
const char *ifname;
const char *dev_part_str;
};
static int sysboot_read_file(struct pxe_context *ctx, const char *file_path,
char *file_addr, ulong *sizep)
{
struct sysboot_info *info = ctx->userdata;
loff_t len_read;
ulong addr;
int ret;
addr = simple_strtoul(file_addr, NULL, 16);
ret = fs_set_blk_dev(info->ifname, info->dev_part_str, info->fstype);
if (ret)
return ret;
ret = fs_read(file_path, addr, 0, 0, &len_read);
if (ret)
return ret;
*sizep = len_read;
return 0;
}
/*
* Boots a system using a local disk syslinux/extlinux file
*
* Returns 0 on success, 1 on error.
*/
static int do_sysboot(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
unsigned long pxefile_addr_r;
struct pxe_context ctx;
char *pxefile_addr_str;
struct sysboot_info info;
char *filename;
int prompt = 0;
int ret;
if (argc > 1 && strstr(argv[1], "-p")) {
prompt = 1;
argc--;
argv++;
}
if (argc < 4)
return cmd_usage(cmdtp);
if (argc < 5) {
pxefile_addr_str = from_env("pxefile_addr_r");
if (!pxefile_addr_str)
return 1;
} else {
pxefile_addr_str = argv[4];
}
if (argc < 6) {
filename = env_get("bootfile");
if (!filename) {
printf("Specify a filename or set the ${bootfile} environment variable\n");
return 1;
}
} else {
filename = argv[5];
env_set("bootfile", filename);
}
if (strstr(argv[3], "ext2")) {
info.fstype = FS_TYPE_EXT;
} else if (strstr(argv[3], "fat")) {
info.fstype = FS_TYPE_FAT;
} else if (strstr(argv[3], "any")) {
info.fstype = FS_TYPE_ANY;
} else {
printf("Invalid filesystem: %s\n", argv[3]);
return 1;
}
info.ifname = argv[1];
info.dev_part_str = argv[2];
if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
printf("Invalid pxefile address: %s\n", pxefile_addr_str);
return 1;
}
if (pxe_setup_ctx(&ctx, cmdtp, sysboot_read_file, &info, true,
filename, false)) {
printf("Out of memory\n");
return CMD_RET_FAILURE;
}
if (get_pxe_file(&ctx, filename, pxefile_addr_r) < 0) {
printf("Error reading config file\n");
pxe_destroy_ctx(&ctx);
return 1;
}
ret = pxe_process(&ctx, pxefile_addr_r, prompt);
pxe_destroy_ctx(&ctx);
if (ret)
return CMD_RET_FAILURE;
return 0;
}
U_BOOT_CMD(sysboot, 7, 1, do_sysboot,
"command to get and boot from syslinux files",
"[-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]\n"
" - load and parse syslinux menu file 'filename' from ext2, fat\n"
" or any filesystem on 'dev' on 'interface' to address 'addr'"
);
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