diff options
| -rw-r--r-- | tools/firmware-utils/Makefile | 1 | ||||
| -rw-r--r-- | tools/firmware-utils/src/dns313-header.c | 239 |
2 files changed, 240 insertions, 0 deletions
diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile index 7c0180ad42..4b4af99908 100644 --- a/tools/firmware-utils/Makefile +++ b/tools/firmware-utils/Makefile @@ -83,6 +83,7 @@ define Host/Compile $(call cc,zyimage, -Wall) $(call cc,mkdhpimg buffalo-lib, -Wall) $(call cc,mkdlinkfw mkdlinkfw-lib, -lz -Wall --std=gnu99) + $(call cc,dns313-header, -Wall) endef define Host/Install diff --git a/tools/firmware-utils/src/dns313-header.c b/tools/firmware-utils/src/dns313-header.c new file mode 100644 index 0000000000..e69e57e7ba --- /dev/null +++ b/tools/firmware-utils/src/dns313-header.c @@ -0,0 +1,239 @@ +/* + * dns313-header.c + * + * Program to add the modified U-Boot header to a binary used with + * the D-Link DNS-313 boot loader when booting directly from an + * EXT2 formatted hard drive. + * + * The DNS313 use the same header on zImage, ramdisk, rootfs. + * + * Written by Linus Walleij <linus.walleij@linaro.org> + * License terms: GPLv2 + */ +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <stdint.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +/* + * This is the U-Boot magic number, so the U-Boot header was used + * (obviously) as a template for this custom header. + */ +#define IH_MAGIC 0x27051956 +#define HEADER_SIZE 0x68 + +#define OFFSET_MAGIC 0x00 +#define OFFSET_HCRC 0x04 +#define OFFSET_TIME 0x08 +#define OFFSET_SIZE 0x0c +#define OFFSET_LOAD 0x10 +#define OFFSET_EP 0x14 +#define OFFSET_DCRC 0x18 +#define OFFSET_OS 0x1c +#define OFFSET_ARCH 0x1d +#define OFFSET_TYPE 0x1e +#define OFFSET_COMP 0x1f +#define OFFSET_NAME 0x20 +#define NAME_LEN 0x20 +#define OFFSET_MODEL 0x40 +#define MODEL_LEN 0x10 +#define OFFSET_VERSION 0x50 +#define VERSION_LEN 0x10 +#define OFFSET_MAC 0x60 +#define MAC_LEN 6 + +static const uint32_t crc32_table[256] = { + 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL, + 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL, + 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL, + 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL, + 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL, + 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL, + 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL, + 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL, + 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL, + 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL, + 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL, + 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL, + 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL, + 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL, + 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL, + 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL, + 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL, + 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL, + 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL, + 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL, + 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL, + 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL, + 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL, + 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL, + 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL, + 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL, + 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL, + 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL, + 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL, + 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL, + 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL, + 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL, + 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL, + 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL, + 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL, + 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL, + 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL, + 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL, + 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL, + 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL, + 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL, + 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL, + 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL, + 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL, + 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL, + 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL, + 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL, + 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL, + 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL, + 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, + 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, + 0x2d02ef8dUL +}; + +static uint32_t crc32(uint32_t crc, + const unsigned char *buf, + unsigned int len) +{ + crc = crc ^ 0xffffffffUL; + do { + crc = crc32_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8); + } while (--len); + return crc ^ 0xffffffffUL; +} + +static void be_wr(unsigned char *buf, uint32_t val) +{ + buf[0] = (val >> 24) & 0xFFU; + buf[1] = (val >> 16) & 0xFFU; + buf[2] = (val >> 8) & 0xFFU; + buf[3] = val & 0xFFU; +} + +int main(int argc, char **argv) +{ + int fdin; + int fdout; + struct stat sb; + uint32_t filesize; + uint32_t padding; + int ret = 0; + const char *pathin; + const char *pathout; + unsigned char *buffer; + unsigned char *infop; + uint32_t sum; + size_t bufsize; + size_t bytes; + int i; + + if (argc < 3) { + printf("Too few arguments.\n"); + printf("%s <infile> <outfile>\n", argv[0]); + } + + pathin = argv[1]; + pathout = argv[2]; + + ret = stat(pathin, &sb); + if (ret < 0) + return ret; + + filesize = sb.st_size; + padding = filesize % 4; + printf("INFILE: %s, size: %08x bytes\n", pathin, filesize); + /* File + extended header size */ + bufsize = filesize + HEADER_SIZE; + + printf("Allocate %08x bytes\n", bufsize); + buffer = malloc(bufsize); + if (!buffer) { + printf("OOM: could not allocate buffer\n"); + return 0; + } + + memset(buffer, 0x00, bufsize); + + /* Read file to buffer */ + fdin = open(pathin, O_RDONLY); + if (!fdin) { + printf("ERROR: could not open input file\n"); + return 0; + } + bytes = read(fdin, buffer + HEADER_SIZE, filesize); + if (bytes < filesize) { + printf("ERROR: could not read entire file\n"); + return 0; + } + close(fdin); + + /* PREP HEADER AND FOOTER */ + infop = buffer; + + be_wr(buffer + OFFSET_MAGIC, IH_MAGIC); + + /* FIXME: use actual time */ + be_wr(buffer + OFFSET_TIME, 0x4c06738c); + be_wr(buffer + OFFSET_SIZE, filesize); + + /* Load address & entry point */ + be_wr(buffer + OFFSET_LOAD, 0x00008000); + be_wr(buffer + OFFSET_EP, 0x00008000); + + buffer[OFFSET_OS] = 0x05; /* Linux */ + buffer[OFFSET_ARCH] = 0x02; /* ARM */ + buffer[OFFSET_TYPE] = 0x02; /* OS kernel image */ + buffer[OFFSET_COMP] = 0x01; /* gzip */ + + /* The vendor firmware just hardcodes this */ + strncpy(buffer + OFFSET_NAME, "kernel.img", NAME_LEN); + buffer[OFFSET_NAME + NAME_LEN - 1] = '\0'; + strncpy(buffer + OFFSET_MODEL, "dns-313v3", MODEL_LEN); + buffer[OFFSET_MODEL + MODEL_LEN - 1] = '\0'; + strncpy(buffer + OFFSET_VERSION, "2.01b04", VERSION_LEN); + buffer[OFFSET_VERSION + VERSION_LEN - 1] = '\0'; + /* Just some MAC address from the example */ + buffer[OFFSET_MAC] = 0x00; + buffer[OFFSET_MAC + 1] = 0x80; + buffer[OFFSET_MAC + 2] = 0xc8; + buffer[OFFSET_MAC + 3] = 0x16; + buffer[OFFSET_MAC + 4] = 0x81; + buffer[OFFSET_MAC + 5] = 0x68; + + /* Checksum payload */ + sum = crc32(0, buffer + HEADER_SIZE, filesize); + be_wr(buffer + OFFSET_DCRC, sum); + printf("data checksum: 0x%08x\n", sum); + + /* Checksum header, then write that into the header checksum */ + sum = crc32(0, buffer, HEADER_SIZE); + be_wr(buffer + OFFSET_HCRC, sum); + printf("header checksum: 0x%08x\n", sum); + + printf("OUTFILE: %s, size: %08x bytes\n", pathout, bufsize); + fdout = open(pathout, O_RDWR|O_CREAT|O_TRUNC,S_IRWXU|S_IRGRP); + if (!fdout) { + printf("ERROR: could not open output file\n"); + return 0; + } + bytes = write(fdout, buffer, bufsize); + if (bytes < bufsize) { + printf("ERROR: could not write complete output file\n"); + return 0; + } + close(fdout); + + free(buffer); + + return 0; +} |