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Diffstat (limited to 'cmd/cmd_source.c')
| -rw-r--r-- | cmd/cmd_source.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/cmd/cmd_source.c b/cmd/cmd_source.c new file mode 100644 index 0000000000..db7ab7e5f4 --- /dev/null +++ b/cmd/cmd_source.c @@ -0,0 +1,188 @@ +/* + * (C) Copyright 2001 + * Kyle Harris, kharris@nexus-tech.net + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * 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> +#if defined(CONFIG_8xx) +#include <mpc8xx.h> +#endif + +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 = getenv_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 |
