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