u-boot/cmd/source.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

184 lines
4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
* Kyle Harris, kharris@nexus-tech.net
*/
/*
* The "source" command allows to define "script images", i. e. files
* that contain command sequences that can be executed by the command
* interpreter. It returns the exit status of the last command
* executed from the script. This is very similar to running a shell
* script in a UNIX shell, hence the name for the command.
*/
/* #define DEBUG */
#include <common.h>
#include <command.h>
#include <image.h>
#include <malloc.h>
#include <mapmem.h>
#include <asm/byteorder.h>
#include <asm/io.h>
int
source (ulong addr, const char *fit_uname)
{
ulong len;
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
const image_header_t *hdr;
#endif
u32 *data;
int verify;
void *buf;
#if defined(CONFIG_FIT)
const void* fit_hdr;
int noffset;
const void *fit_data;
size_t fit_len;
#endif
verify = env_get_yesno("verify");
buf = map_sysmem(addr, 0);
switch (genimg_get_format(buf)) {
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
case IMAGE_FORMAT_LEGACY:
hdr = buf;
if (!image_check_magic (hdr)) {
puts ("Bad magic number\n");
return 1;
}
if (!image_check_hcrc (hdr)) {
puts ("Bad header crc\n");
return 1;
}
if (verify) {
if (!image_check_dcrc (hdr)) {
puts ("Bad data crc\n");
return 1;
}
}
if (!image_check_type (hdr, IH_TYPE_SCRIPT)) {
puts ("Bad image type\n");
return 1;
}
/* get length of script */
data = (u32 *)image_get_data (hdr);
if ((len = uimage_to_cpu (*data)) == 0) {
puts ("Empty Script\n");
return 1;
}
/*
* scripts are just multi-image files with one component, seek
* past the zero-terminated sequence of image lengths to get
* to the actual image data
*/
while (*data++);
break;
#endif
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
if (fit_uname == NULL) {
puts ("No FIT subimage unit name\n");
return 1;
}
fit_hdr = buf;
if (!fit_check_format (fit_hdr)) {
puts ("Bad FIT image format\n");
return 1;
}
/* get script component image node offset */
noffset = fit_image_get_node (fit_hdr, fit_uname);
if (noffset < 0) {
printf ("Can't find '%s' FIT subimage\n", fit_uname);
return 1;
}
if (!fit_image_check_type (fit_hdr, noffset, IH_TYPE_SCRIPT)) {
puts ("Not a image image\n");
return 1;
}
/* verify integrity */
if (verify) {
if (!fit_image_verify(fit_hdr, noffset)) {
puts ("Bad Data Hash\n");
return 1;
}
}
/* get script subimage data address and length */
if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
puts ("Could not find script subimage data\n");
return 1;
}
data = (u32 *)fit_data;
len = (ulong)fit_len;
break;
#endif
default:
puts ("Wrong image format for \"source\" command\n");
return 1;
}
debug ("** Script length: %ld\n", len);
return run_command_list((char *)data, len, 0);
}
/**************************************************/
#if defined(CONFIG_CMD_SOURCE)
static int do_source(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
ulong addr;
int rcode;
const char *fit_uname = NULL;
/* Find script image */
if (argc < 2) {
addr = CONFIG_SYS_LOAD_ADDR;
debug ("* source: default load address = 0x%08lx\n", addr);
#if defined(CONFIG_FIT)
} else if (fit_parse_subimage (argv[1], load_addr, &addr, &fit_uname)) {
debug ("* source: subimage '%s' from FIT image at 0x%08lx\n",
fit_uname, addr);
#endif
} else {
addr = simple_strtoul(argv[1], NULL, 16);
debug ("* source: cmdline image address = 0x%08lx\n", addr);
}
printf ("## Executing script at %08lx\n", addr);
rcode = source (addr, fit_uname);
return rcode;
}
#ifdef CONFIG_SYS_LONGHELP
static char source_help_text[] =
"[addr]\n"
"\t- run script starting at addr\n"
"\t- A valid image header must be present"
#if defined(CONFIG_FIT)
"\n"
"For FIT format uImage addr must include subimage\n"
"unit name in the form of addr:<subimg_uname>"
#endif
"";
#endif
U_BOOT_CMD(
source, 2, 0, do_source,
"run script from memory", source_help_text
);
#endif