diff options
Diffstat (limited to 'tools/firmware-utils/src/mkmerakifw.c')
-rw-r--r-- | tools/firmware-utils/src/mkmerakifw.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/tools/firmware-utils/src/mkmerakifw.c b/tools/firmware-utils/src/mkmerakifw.c deleted file mode 100644 index b84d42d148..0000000000 --- a/tools/firmware-utils/src/mkmerakifw.c +++ /dev/null @@ -1,316 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2015 Thomas Hebb <tommyhebb@gmail.com> - * - * The format of the header this tool generates was first documented by - * Chris Blake <chrisrblake93 (at) gmail.com> in a shell script of the - * same purpose. I have created this reimplementation at his request. The - * original script can be found at: - * <https://github.com/riptidewave93/meraki-partbuilder> - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdbool.h> -#include <string.h> -#include <libgen.h> -#include <getopt.h> -#include <errno.h> -#include <arpa/inet.h> - -#include "sha1.h" - -#define PADDING_BYTE 0xff - -#define HDR_LENGTH 0x00000400 -#define HDR_OFF_MAGIC1 0 -#define HDR_OFF_HDRLEN 4 -#define HDR_OFF_IMAGELEN 8 -#define HDR_OFF_CHECKSUM 12 -#define HDR_OFF_MAGIC2 32 -#define HDR_OFF_MAGIC3 36 -#define HDR_OFF_STATICHASH 40 -#define HDR_OFF_KERNEL_OFFSET 40 -#define HDR_OFF_RAMDISK_OFFSET 44 -#define HDR_OFF_FDT_OFFSET 48 -#define HDR_OFF_UNKNOWN_OFFSET 52 - -struct board_info { - uint32_t magic1; - uint32_t magic2; - uint32_t magic3; - uint32_t imagelen; - union { - unsigned char statichash[20]; - struct { - uint32_t kernel_offset; - uint32_t ramdisk_offset; - uint32_t fdt_offset; - uint32_t unknown_offset; - } mx60; - } u; - char *id; - char *description; -}; - -/* - * Globals - */ -static char *progname; - -static char *board_id; -static const struct board_info *board; - -static const struct board_info boards[] = { - { - .id = "mr18", - .description = "Meraki MR18 Access Point", - .magic1 = 0x8e73ed8a, - .magic2 = 0x8e73ed8a, - .imagelen = 0x00800000, - .u.statichash = {0xda, 0x39, 0xa3, 0xee, 0x5e, - 0x6b, 0x4b, 0x0d, 0x32, 0x55, - 0xbf, 0xef, 0x95, 0x60, 0x18, - 0x90, 0xaf, 0xd8, 0x07, 0x09}, - }, { - .id = "mr24", - .description = "Meraki MR24 Access Point", - .magic1 = 0x8e73ed8a, - .magic2 = 0x8e73ed8a, - .imagelen = 0x00800000, - .u.statichash = {0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff}, - }, { - .id = "mx60", - .description = "Meraki MX60/MX60W Security Appliance", - .magic1 = 0x8e73ed8a, - .magic2 = 0xa1f0beef, /* Enables use of load addr in statichash */ - .magic3 = 0x00060001, /* This goes along with magic2 */ - .imagelen = 0x3fd00000, - /* The static hash below does the following: - * 1st Row: Kernel Offset - * 2nd Row: Ramdisk Offset - * 3rd Row: FDT Offset - * 4th Row: ? Unused/Unknown ? - * 5th Row: ? Unused/Unknown ? - */ - .u.mx60 = { - .kernel_offset = 0x10000, - .ramdisk_offset = 0x3FFC00, - .fdt_offset = 0x0400, - .unknown_offset = 0x0400, - }, - }, { - /* terminating entry */ - } -}; - -/* - * Message macros - */ -#define ERR(fmt, ...) do { \ - fflush(0); \ - fprintf(stderr, "[%s] *** error: " fmt "\n", \ - progname, ## __VA_ARGS__); \ -} while (0) - -#define ERRS(fmt, ...) do { \ - int save = errno; \ - fflush(0); \ - fprintf(stderr, "[%s] *** error: " fmt "\n", \ - progname, ## __VA_ARGS__, strerror(save)); \ -} while (0) - -static const struct board_info *find_board(const char *id) -{ - const struct board_info *ret; - const struct board_info *board; - - ret = NULL; - for (board = boards; board->id != NULL; board++) { - if (strcasecmp(id, board->id) == 0) { - ret = board; - break; - } - } - - return ret; -} - -static void usage(int status) -{ - FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout; - const struct board_info *board; - - fprintf(stream, "Usage: %s [OPTIONS...]\n", progname); - fprintf(stream, -"\n" -"Options:\n" -" -B <board> create image for the board specified with <board>\n" -" -i <file> read kernel image from the file <file>\n" -" -o <file> write output to the file <file>\n" -" -s strip padding from the end of the image\n" -" -h show this screen\n" - ); - - fprintf(stream, "\nBoards:\n"); - for (board = boards; board->id != NULL; board++) - fprintf(stream, " %-16s%s\n", board->id, board->description); - - exit(status); -} - -void writel(unsigned char *buf, size_t offset, uint32_t value) -{ - value = htonl(value); - memcpy(buf + offset, &value, sizeof(uint32_t)); -} - -int main(int argc, char *argv[]) -{ - int ret = EXIT_FAILURE; - long klen; - size_t kspace; - unsigned char *kernel; - size_t buflen; - unsigned char *buf; - bool strip_padding = false; - char *ofname = NULL, *ifname = NULL; - FILE *out, *in; - - progname = basename(argv[0]); - - while (1) { - int c; - - c = getopt(argc, argv, "B:i:o:sh"); - if (c == -1) - break; - - switch (c) { - case 'B': - board_id = optarg; - break; - case 'i': - ifname = optarg; - break; - case 'o': - ofname = optarg; - break; - case 's': - strip_padding = true; - break; - case 'h': - usage(EXIT_SUCCESS); - break; - default: - usage(EXIT_FAILURE); - break; - } - } - - if (board_id == NULL) { - ERR("no board specified"); - goto err; - } - - board = find_board(board_id); - if (board == NULL) { - ERR("unknown board \"%s\"", board_id); - goto err; - } - - if (ifname == NULL) { - ERR("no input file specified"); - goto err; - } - - if (ofname == NULL) { - ERR("no output file specified"); - goto err; - } - - in = fopen(ifname, "r"); - if (in == NULL) { - ERRS("could not open \"%s\" for reading: %s", ifname); - goto err; - } - - buflen = board->imagelen; - kspace = buflen - HDR_LENGTH; - - /* Get kernel length */ - fseek(in, 0, SEEK_END); - klen = ftell(in); - rewind(in); - - if (klen > kspace) { - ERR("file \"%s\" is too big - max size: 0x%08lX\n", - ifname, kspace); - goto err_close_in; - } - - /* If requested, resize buffer to remove padding */ - if (strip_padding) - buflen = klen + HDR_LENGTH; - - /* Allocate and initialize buffer for final image */ - buf = malloc(buflen); - if (buf == NULL) { - ERRS("no memory for buffer: %s\n"); - goto err_close_in; - } - memset(buf, PADDING_BYTE, buflen); - - /* Load kernel */ - kernel = buf + HDR_LENGTH; - fread(kernel, klen, 1, in); - - /* Write magic values */ - writel(buf, HDR_OFF_MAGIC1, board->magic1); - writel(buf, HDR_OFF_MAGIC2, board->magic2); - writel(buf, HDR_OFF_MAGIC3, board->magic3); - - /* Write header and image length */ - writel(buf, HDR_OFF_HDRLEN, HDR_LENGTH); - writel(buf, HDR_OFF_IMAGELEN, klen); - - /* Write checksum and static hash */ - sha1_csum(kernel, klen, buf + HDR_OFF_CHECKSUM); - - switch (board->magic2) { - case 0xa1f0beef: - writel(buf, HDR_OFF_KERNEL_OFFSET, board->u.mx60.kernel_offset); - writel(buf, HDR_OFF_RAMDISK_OFFSET, board->u.mx60.ramdisk_offset); - writel(buf, HDR_OFF_FDT_OFFSET, board->u.mx60.fdt_offset), - writel(buf, HDR_OFF_UNKNOWN_OFFSET, board->u.mx60.unknown_offset); - break; - - case 0x8e73ed8a: - memcpy(buf + HDR_OFF_STATICHASH, board->u.statichash, 20); - break; - } - - /* Save finished image */ - out = fopen(ofname, "w"); - if (out == NULL) { - ERRS("could not open \"%s\" for writing: %s", ofname); - goto err_free; - } - fwrite(buf, buflen, 1, out); - - ret = EXIT_SUCCESS; - - fclose(out); - -err_free: - free(buf); - -err_close_in: - fclose(in); - -err: - return ret; -} |