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Diffstat (limited to 'tools/firmware-utils/src/zytrx.c')
| -rw-r--r-- | tools/firmware-utils/src/zytrx.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/tools/firmware-utils/src/zytrx.c b/tools/firmware-utils/src/zytrx.c deleted file mode 100644 index 8c113d6d79..0000000000 --- a/tools/firmware-utils/src/zytrx.c +++ /dev/null @@ -1,224 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * zytrx - add header to images for ZyXEL NR7101 - * - * Based on add_header.c - partially based on OpenWrt's - * motorola-bin.c - * - * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> - * Gabor Juhos <juhosg@openwrt.org> - * Copyright (C) 2021 Bjørn Mork <bjorn@mork.no> - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <string.h> -#include <netinet/in.h> -#include <inttypes.h> - -#define BPB 8 /* bits/byte */ - -static uint32_t crc32[1<<BPB]; - -static void init_crc32(void) -{ - const uint32_t poly = ntohl(0x2083b8ed); - int n; - - for (n = 0; n < 1<<BPB; n++) { - uint32_t crc = n; - int bit; - - for (bit = 0; bit < BPB; bit++) - crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1); - crc32[n] = crc; - } -} - -static uint32_t crc32buf(const unsigned char *buf, size_t len) -{ - uint32_t crc = 0xFFFFFFFF; - - for (; len; len--, buf++) - crc = crc32[(uint8_t)crc ^ *buf] ^ (crc >> BPB); - return ~crc; -} - -/* HDR0 reversed, to be stored as BE */ -#define MAGIC 0x30524448 /* HDR0 reversed, to be stored as BE */ - -/* All numbers are stored as BE */ -struct zytrx_t { - uint32_t magic; - uint32_t len_h; /* Length of this header */ - uint32_t len_t; /* Total length of file */ - uint32_t crc32_p; /* Bit inverted 32-bit CRC of image payload */ - uint8_t verInt[32]; /* String "5.0.0.0\n" zero padded */ - uint8_t verExt[32]; /* String "\n" zero padded */ - uint32_t len_p; /* Length of image payload */ - uint8_t pad1[12]; /* zero padding(?) */ - uint8_t code[164]; /* string "3 6035 122 0\n" zero padded */ - uint8_t chipid[8]; /* string "MT7621A" zero padded */ - uint8_t boardid[16]; /* string "NR7101" zero padded */ - uint32_t modelid; /* modelid as 4 BCD digits: 0x07010001 */ - uint8_t pad2[8]; /* zero padding(?) */ - uint8_t swVersionInt[32]; /* ZyXEL version string: "1.00(ABUV.0)D0" zero padded */ - uint8_t swVersionExt[32]; /* identical to swVersionInt */ - uint8_t pad4[4]; /* zero padding(?) */ - uint32_t kernelChksum; /* no idea how this is computed - reported but not validated */ - uint8_t pad5[4]; /* zero padding(?) */ - uint32_t crc32_h; /* Bit inverted 32-bit CRC of this header payload */ - uint8_t pad6[4]; /* zero padding(?) */ -}; - -/* static?() field values of unknown meaning - maybe ove to board - * table when we know the significance - */ -#define VER_INT "5.0.0.0\n" -#define VER_EXT "\n" -#define CODE "3 6035 122 0\n" -#define KERNELCHKSUM 0x12345678 - -/* table of supported devices using this header format */ -static struct board_t { - uint8_t chipid[8]; - uint8_t boardid[16]; - uint32_t modelid; -} boards[] = { - { "MT7621A", "NR7101", 0x07010001 }, - {} -}; - -static int find_board(struct zytrx_t *h, char *board) -{ - struct board_t *p; - - for (p = boards; p->modelid; p++) { - if (strncmp((const char *)p->boardid, board, sizeof(p->boardid))) - continue; - memcpy(h->chipid, p->chipid, sizeof(h->chipid)); - memcpy(h->boardid, p->boardid, sizeof(h->boardid)); - h->modelid = htonl(p->modelid); - return 0; - } - return -1; -} - -static void usage(const char *name) -{ - struct board_t *p; - - fprintf(stderr, "Usage:\n"); - fprintf(stderr, " %s -B <board> -v <versionstr> -i <file> [-o <outputfile>]\n\n", name); - fprintf(stderr, "Supported <board> values:\n"); - for (p = boards; p->modelid; p++) - fprintf(stderr, "\t%-12s\n", p->boardid); - fprintf(stderr, "\nExample:\n"); - fprintf(stderr, " %s -B %s -v foobar-1.0 -i my.img -o out.img\n\n", name, - boards[0].boardid); - exit(EXIT_FAILURE); -} - -static void errexit(const char *msg) -{ - fprintf(stderr, "ERR: %s: %s\n", msg, errno ? strerror(errno) : "unknown"); - exit(EXIT_FAILURE); -} - -static void *map_input(const char *name, size_t *len) -{ - struct stat stat; - void *mapped; - int fd; - - fd = open(name, O_RDONLY); - if (fd < 0) - return NULL; - if (fstat(fd, &stat) < 0) { - close(fd); - return NULL; - } - *len = stat.st_size; - mapped = mmap(NULL, stat.st_size, PROT_READ, MAP_SHARED, fd, 0); - if (close(fd) < 0) { - (void) munmap(mapped, stat.st_size); - return NULL; - } - return mapped; -} - -int main(int argc, char **argv) -{ - int c, fdout = STDOUT_FILENO; - void *input_file = NULL; - size_t file_len, len; - uint32_t crc; - struct zytrx_t h = { - .magic = htonl(MAGIC), - .len_h = htonl(sizeof(h)), - .verInt = VER_INT, - .verExt = VER_EXT, - .code = CODE, - .kernelChksum = htonl(KERNELCHKSUM), - }; - - while ((c = getopt(argc, argv, "B:v:i:o:")) != -1) { - switch (c) { - case 'B': - if (find_board(&h, optarg) < 0) - errexit("unsupported board"); - break; - case 'v': - len = strlen(optarg); - if (len > sizeof(h.swVersionInt)) - errexit("version string too long"); - memcpy(h.swVersionInt, optarg, len); - memcpy(h.swVersionExt, optarg, len); - break; - case 'i': - input_file = map_input(optarg, &file_len); - if (!input_file) - errexit(optarg); - break; - case 'o': - fdout = open(optarg, O_WRONLY | O_CREAT, 0644); - if (fdout < 0) - errexit(optarg); - break; - default: - usage(argv[0]); - } - } - - /* required paremeters */ - if (!input_file || !h.modelid || !h.swVersionInt[0]) - usage(argv[0]); - - /* length fields */ - h.len_t = htonl(sizeof(h) + file_len); - h.len_p = htonl(file_len); - - /* crc fields */ - init_crc32(); - crc = crc32buf(input_file, file_len); - h.crc32_p = htonl(~crc); - crc = crc32buf((unsigned char *)&h, sizeof(h)); - h.crc32_h = htonl(~crc); - - /* dump new image */ - write(fdout, &h, sizeof(h)); - write(fdout, input_file, file_len); - - /* close files */ - munmap(input_file, file_len); - if (fdout != STDOUT_FILENO) - close(fdout); - - return EXIT_SUCCESS; -} |