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https://github.com/AsahiLinux/u-boot
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
184 lines
4 KiB
C
184 lines
4 KiB
C
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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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 <asm/byteorder.h>
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#include <asm/io.h>
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#if defined(CONFIG_8xx)
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#include <mpc8xx.h>
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#endif
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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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const image_header_t *hdr;
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ulong *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 = getenv_yesno ("verify");
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buf = map_sysmem(addr, 0);
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switch (genimg_get_format(buf)) {
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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 = (ulong *)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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#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 = (ulong *)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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int
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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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