d03e76af5c
dtimg command allows user to work with Android DTB/DTBO image format. Such as, getting the address of desired DTB/DTBO file, printing the dump of the image in U-Boot shell, etc. This command is needed to provide Android boot with new Android DT image format further. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Reviewed-by: Tom Rini <trini@konsulko.com>
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018 Linaro Ltd.
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* Sam Protsenko <semen.protsenko@linaro.org>
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*/
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#include <image-android-dt.h>
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#include <common.h>
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enum cmd_dtimg_info {
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CMD_DTIMG_START = 0,
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CMD_DTIMG_SIZE,
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};
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static int do_dtimg_dump(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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char *endp;
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ulong hdr_addr;
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if (argc != 2)
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return CMD_RET_USAGE;
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hdr_addr = simple_strtoul(argv[1], &endp, 16);
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if (*endp != '\0') {
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printf("Error: Wrong image address\n");
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return CMD_RET_FAILURE;
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}
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if (!android_dt_check_header(hdr_addr)) {
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printf("Error: DT image header is incorrect\n");
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return CMD_RET_FAILURE;
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}
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android_dt_print_contents(hdr_addr);
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return CMD_RET_SUCCESS;
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}
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static int dtimg_get_fdt(int argc, char * const argv[], enum cmd_dtimg_info cmd)
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{
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ulong hdr_addr;
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u32 index;
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char *endp;
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ulong fdt_addr;
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u32 fdt_size;
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char buf[65];
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if (argc != 4)
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return CMD_RET_USAGE;
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hdr_addr = simple_strtoul(argv[1], &endp, 16);
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if (*endp != '\0') {
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printf("Error: Wrong image address\n");
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return CMD_RET_FAILURE;
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}
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if (!android_dt_check_header(hdr_addr)) {
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printf("Error: DT image header is incorrect\n");
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return CMD_RET_FAILURE;
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}
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index = simple_strtoul(argv[2], &endp, 0);
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if (*endp != '\0') {
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printf("Error: Wrong index\n");
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return CMD_RET_FAILURE;
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}
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if (!android_dt_get_fdt_by_index(hdr_addr, index, &fdt_addr, &fdt_size))
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return CMD_RET_FAILURE;
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switch (cmd) {
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case CMD_DTIMG_START:
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snprintf(buf, sizeof(buf), "%lx", fdt_addr);
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break;
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case CMD_DTIMG_SIZE:
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snprintf(buf, sizeof(buf), "%x", fdt_size);
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break;
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default:
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printf("Error: Unknown cmd_dtimg_info value: %d\n", cmd);
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return CMD_RET_FAILURE;
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}
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env_set(argv[3], buf);
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return CMD_RET_SUCCESS;
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}
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static int do_dtimg_start(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return dtimg_get_fdt(argc, argv, CMD_DTIMG_START);
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}
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static int do_dtimg_size(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return dtimg_get_fdt(argc, argv, CMD_DTIMG_SIZE);
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}
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static cmd_tbl_t cmd_dtimg_sub[] = {
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U_BOOT_CMD_MKENT(dump, 2, 0, do_dtimg_dump, "", ""),
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U_BOOT_CMD_MKENT(start, 4, 0, do_dtimg_start, "", ""),
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U_BOOT_CMD_MKENT(size, 4, 0, do_dtimg_size, "", ""),
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};
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static int do_dtimg(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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cmd_tbl_t *cp;
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cp = find_cmd_tbl(argv[1], cmd_dtimg_sub, ARRAY_SIZE(cmd_dtimg_sub));
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/* Strip off leading 'dtimg' command argument */
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argc--;
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argv++;
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if (!cp || argc > cp->maxargs)
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return CMD_RET_USAGE;
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if (flag == CMD_FLAG_REPEAT && !cp->repeatable)
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return CMD_RET_SUCCESS;
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return cp->cmd(cmdtp, flag, argc, argv);
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}
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U_BOOT_CMD(
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dtimg, CONFIG_SYS_MAXARGS, 0, do_dtimg,
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"manipulate dtb/dtbo Android image",
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"dump <addr>\n"
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" - parse specified image and print its structure info\n"
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" <addr>: image address in RAM, in hex\n"
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"dtimg start <addr> <index> <varname>\n"
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" - get address (hex) of FDT in the image, by index\n"
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" <addr>: image address in RAM, in hex\n"
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" <index>: index of desired FDT in the image\n"
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" <varname>: name of variable where to store address of FDT\n"
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"dtimg size <addr> <index> <varname>\n"
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" - get size (hex, bytes) of FDT in the image, by index\n"
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" <addr>: image address in RAM, in hex\n"
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" <index>: index of desired FDT in the image\n"
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" <varname>: name of variable where to store size of FDT"
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);
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