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>lime2-spi
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// 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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