diff options
Diffstat (limited to 'tools/firmware-utils/src/mkmerakifw-old.c')
| -rw-r--r-- | tools/firmware-utils/src/mkmerakifw-old.c | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/tools/firmware-utils/src/mkmerakifw-old.c b/tools/firmware-utils/src/mkmerakifw-old.c deleted file mode 100644 index a3e7a726b8..0000000000 --- a/tools/firmware-utils/src/mkmerakifw-old.c +++ /dev/null @@ -1,384 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2015 Thomas Hebb <tommyhebb@gmail.com> - * Copyright (C) 2016 Christian Lamparter <chunkeey@googlemail.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> - * - * Support for the old header format, which is used by the Cisco Z1 AP - * has been reverse engineered from the nandloader's nand_load_bk function. - * The original code is part of Cisco's GPL code and can be found at: - * <https://github.com/riptidewave93/meraki-linux> - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdbool.h> -#include <string.h> -#include <libgen.h> -#include <endian.h> -#include <getopt.h> -#include <errno.h> -#include <arpa/inet.h> - -#define PADDING_BYTE 0xff - -#define HDR_LENGTH 0x00000020 -#define HDR_OFF_MAGIC1 0 -#define HDR_OFF_LOAD_ADDR 4 -#define HDR_OFF_IMAGELEN 8 -#define HDR_OFF_ENTRY 12 -#define HDR_OFF_CHECKSUM 16 -#define HDR_OFF_FILLER0 20 -#define HDR_OFF_FILLER1 24 -#define HDR_OFF_FILLER2 28 - -struct board_info { - char *id; - char *description; - uint32_t magic; - uint32_t imagelen; - uint32_t load_addr; - uint32_t entry; - bool le32; -}; - -/* - * Globals - */ -static char *progname; -static bool strip_padding; - -static char *board_id; -static const struct board_info *board; - -static const struct board_info boards[] = { - { - .id = "z1", - .description = "Meraki Z1 Access Point", - .magic = 0x4d495053, - .imagelen = 0x007e0000, - .load_addr = 0x80060000, - .entry = 0x80060000, - .le32 = 0, - }, { - .id = "mx64", - .description = "Meraki MX64/MX65", - .magic = 0x4d495053, - .imagelen = 0x00000000, - .load_addr = 0x60008000, - .entry = 0x60008000, - .le32 = 1, - }, { - /* 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); -} - -static void writel(unsigned char *buf, size_t offset, uint32_t value, bool le32) -{ - if (!le32) - value = htonl(value); - - memcpy(buf + offset, &value, sizeof(uint32_t)); -} - -static const uint32_t crc32_table[] = { - 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, - 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, - 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, - 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, - 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, - 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, - 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, - 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, - 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, - 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, - 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, - 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, - 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, - 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, - 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, - 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, - 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, - 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, - 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, - 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, - 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, - 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, - 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, - 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, - 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, - 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, - 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, - 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, - 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, - 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, - 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, - 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, - 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, - 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, - 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, - 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, - 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, - 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, - 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, - 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, - 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, - 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, - 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, - 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, - 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, - 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, - 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, - 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, - 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, - 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, - 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, - 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, - 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, - 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, - 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, - 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, - 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, - 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, - 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, - 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, - 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, - 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, - 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, - 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, -}; - -static inline uint32_t crc32_accumulate_8(const uint32_t crc, const uint8_t ch) -{ - return crc32_table[(crc ^ ch) & 0xff] ^ (crc >> 8); -} - -static void crc32_csum(uint8_t *buf, const size_t len, bool le32) -{ - int j, k, l, m; - uint32_t crc; - size_t i; - - crc = ~0; - k = le32 * 3; - l = le32 * -2 + 1; - - for (i = 0; i < len; i += 4) { - for (j = 3; j >= 0; j -= 1) { - m = (j - k) * l; - crc = crc32_accumulate_8(crc, buf[i + m]); - } - } - crc = ~crc; - - writel(buf, HDR_OFF_CHECKSUM, crc, le32); -} - - -static int meraki_build_hdr(const struct board_info *board, const size_t klen, - FILE *out, FILE *in) -{ - unsigned char *kernel; - unsigned char *buf; - size_t buflen; - size_t kspace; - - size_t rc; - buflen = board->imagelen; - - if (buflen > 0) { - kspace = buflen - HDR_LENGTH; - - if (klen > kspace) { - ERR("kernel file is too big - max size: 0x%08lX\n", kspace); - return EXIT_FAILURE; - } - } - - /* 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"); - return EXIT_FAILURE; - } - memset(buf, PADDING_BYTE, buflen); - - /* Load kernel */ - kernel = buf + HDR_LENGTH; - fread(kernel, klen, 1, in); - - /* Write magic values and filler */ - writel(buf, HDR_OFF_MAGIC1, board->magic, board->le32); - writel(buf, HDR_OFF_FILLER0, 0, board->le32); - writel(buf, HDR_OFF_FILLER1, 0, board->le32); - writel(buf, HDR_OFF_FILLER2, 0, board->le32); - - /* Write load and kernel entry point address */ - writel(buf, HDR_OFF_LOAD_ADDR, board->load_addr, board->le32); - writel(buf, HDR_OFF_ENTRY, board->entry, board->le32); - - /* Write header and image length */ - writel(buf, HDR_OFF_IMAGELEN, klen, board->le32); - - /* this gets replaced later, after the checksum has been calculated */ - writel(buf, HDR_OFF_CHECKSUM, 0, board->le32); - - /* Write checksum */ - crc32_csum(buf, klen + HDR_LENGTH, board->le32); - - rc = fwrite(buf, buflen, 1, out); - - free(buf); - - return rc == 1 ? EXIT_SUCCESS : EXIT_FAILURE; -} - -int main(int argc, char *argv[]) -{ - int ret = EXIT_FAILURE; - char *ofname = NULL, *ifname = NULL; - FILE *out, *in; - size_t klen; - - 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; - } - - /* Get kernel length */ - fseek(in, 0, SEEK_END); - klen = ftell(in); - rewind(in); - - out = fopen(ofname, "w"); - if (out == NULL) { - ERRS("could not open \"%s\" for writing: %s", ofname); - goto err_close_in; - } - - ret = meraki_build_hdr(board, klen, out, in); - fclose(out); - -err_close_in: - fclose(in); - -err: - return ret; -} |