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