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-rw-r--r--tools/firmware-utils/src/mkfwimage.c467
1 files changed, 467 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/mkfwimage.c b/tools/firmware-utils/src/mkfwimage.c
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index 0000000..e3a03c1
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+++ b/tools/firmware-utils/src/mkfwimage.c
@@ -0,0 +1,467 @@
+/*
+ * Copyright (C) 2007 Ubiquiti Networks, Inc.
+ * Copyright (C) 2008 Lukas Kuna <ValXdater@seznam.cz>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <zlib.h>
+#include <sys/mman.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include "fw.h"
+
+typedef struct fw_layout_data {
+ char name[PATH_MAX];
+ u_int32_t kern_start;
+ u_int32_t kern_entry;
+ u_int32_t firmware_max_length;
+} fw_layout_t;
+
+fw_layout_t fw_layout_data[] = {
+ {
+ .name = "XS2",
+ .kern_start = 0xbfc30000,
+ .kern_entry = 0x80041000,
+ .firmware_max_length= 0x00390000,
+ },
+ {
+ .name = "XS5",
+ .kern_start = 0xbe030000,
+ .kern_entry = 0x80041000,
+ .firmware_max_length= 0x00390000,
+ },
+ {
+ .name = "RS",
+ .kern_start = 0xbf030000,
+ .kern_entry = 0x80060000,
+ .firmware_max_length= 0x00B00000,
+ },
+ {
+ .name = "RSPRO",
+ .kern_start = 0xbf030000,
+ .kern_entry = 0x80060000,
+ .firmware_max_length= 0x00F00000,
+ },
+ {
+ .name = "LS-SR71",
+ .kern_start = 0xbf030000,
+ .kern_entry = 0x80060000,
+ .firmware_max_length= 0x00640000,
+ },
+ {
+ .name = "XS2-8",
+ .kern_start = 0xa8030000,
+ .kern_entry = 0x80041000,
+ .firmware_max_length= 0x006C0000,
+ },
+ {
+ .name = "XM",
+ .kern_start = 0x9f050000,
+ .kern_entry = 0x80002000,
+ .firmware_max_length= 0x006A0000,
+ },
+ { .name = "",
+ },
+};
+
+typedef struct part_data {
+ char partition_name[64];
+ int partition_index;
+ u_int32_t partition_baseaddr;
+ u_int32_t partition_startaddr;
+ u_int32_t partition_memaddr;
+ u_int32_t partition_entryaddr;
+ u_int32_t partition_length;
+
+ char filename[PATH_MAX];
+ struct stat stats;
+} part_data_t;
+
+#define MAX_SECTIONS 8
+#define DEFAULT_OUTPUT_FILE "firmware-image.bin"
+#define DEFAULT_VERSION "UNKNOWN"
+
+#define OPTIONS "B:hv:m:o:r:k:"
+
+static int debug = 0;
+
+typedef struct image_info {
+ char magic[16];
+ char version[256];
+ char outputfile[PATH_MAX];
+ u_int32_t part_count;
+ part_data_t parts[MAX_SECTIONS];
+} image_info_t;
+
+static void write_header(void* mem, const char *magic, const char* version)
+{
+ header_t* header = mem;
+ memset(header, 0, sizeof(header_t));
+
+ memcpy(header->magic, magic, MAGIC_LENGTH);
+ strncpy(header->version, version, sizeof(header->version));
+ header->crc = htonl(crc32(0L, (unsigned char *)header,
+ sizeof(header_t) - 2 * sizeof(u_int32_t)));
+ header->pad = 0L;
+}
+
+
+static void write_signature(void* mem, u_int32_t sig_offset)
+{
+ /* write signature */
+ signature_t* sign = (signature_t*)(mem + sig_offset);
+ memset(sign, 0, sizeof(signature_t));
+
+ memcpy(sign->magic, MAGIC_END, MAGIC_LENGTH);
+ sign->crc = htonl(crc32(0L,(unsigned char *)mem, sig_offset));
+ sign->pad = 0L;
+}
+
+static int write_part(void* mem, part_data_t* d)
+{
+ char* addr;
+ int fd;
+ part_t* p = mem;
+ part_crc_t* crc = mem + sizeof(part_t) + d->stats.st_size;
+
+ fd = open(d->filename, O_RDONLY);
+ if (fd < 0)
+ {
+ ERROR("Failed opening file '%s'\n", d->filename);
+ return -1;
+ }
+
+ if ((addr=(char*)mmap(0, d->stats.st_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED)
+ {
+ ERROR("Failed mmaping memory for file '%s'\n", d->filename);
+ close(fd);
+ return -2;
+ }
+
+ memcpy(mem + sizeof(part_t), addr, d->stats.st_size);
+ munmap(addr, d->stats.st_size);
+
+ memset(p->name, 0, sizeof(p->name));
+ strncpy(p->magic, MAGIC_PART, MAGIC_LENGTH);
+ strncpy(p->name, d->partition_name, sizeof(p->name));
+ p->index = htonl(d->partition_index);
+ p->data_size = htonl(d->stats.st_size);
+ p->part_size = htonl(d->partition_length);
+ p->baseaddr = htonl(d->partition_baseaddr);
+ p->memaddr = htonl(d->partition_memaddr);
+ p->entryaddr = htonl(d->partition_entryaddr);
+
+ crc->crc = htonl(crc32(0L, mem, d->stats.st_size + sizeof(part_t)));
+ crc->pad = 0L;
+
+ return 0;
+}
+
+static void usage(const char* progname)
+{
+ INFO("Version %s\n"
+ "Usage: %s [options]\n"
+ "\t-v <version string>\t - firmware version information, default: %s\n"
+ "\t-o <output file>\t - firmware output file, default: %s\n"
+ "\t-m <magic>\t - firmware magic, default: %s\n"
+ "\t-k <kernel file>\t\t - kernel file\n"
+ "\t-r <rootfs file>\t\t - rootfs file\n"
+ "\t-B <board name>\t\t - choose firmware layout for specified board (XS2, XS5, RS, XM)\n"
+ "\t-h\t\t\t - this help\n", VERSION,
+ progname, DEFAULT_VERSION, DEFAULT_OUTPUT_FILE, MAGIC_HEADER);
+}
+
+static void print_image_info(const image_info_t* im)
+{
+ int i = 0;
+ INFO("Firmware version: '%s'\n"
+ "Output file: '%s'\n"
+ "Part count: %u\n",
+ im->version, im->outputfile,
+ im->part_count);
+
+ for (i = 0; i < im->part_count; ++i)
+ {
+ const part_data_t* d = &im->parts[i];
+ INFO(" %10s: %8ld bytes (free: %8ld)\n",
+ d->partition_name,
+ d->stats.st_size,
+ d->partition_length - d->stats.st_size);
+ }
+}
+
+
+
+static u_int32_t filelength(const char* file)
+{
+ FILE *p;
+ int ret = -1;
+
+ if ( (p = fopen(file, "rb") ) == NULL) return (-1);
+
+ fseek(p, 0, SEEK_END);
+ ret = ftell(p);
+
+ fclose (p);
+
+ return (ret);
+}
+
+static int create_image_layout(const char* kernelfile, const char* rootfsfile, char* board_name, image_info_t* im)
+{
+ part_data_t* kernel = &im->parts[0];
+ part_data_t* rootfs = &im->parts[1];
+
+ fw_layout_t* p;
+
+ p = &fw_layout_data[0];
+ while ((strlen(p->name) != 0) && (strncmp(p->name, board_name, sizeof(board_name)) != 0))
+ p++;
+ if (p->name == NULL) {
+ printf("BUG! Unable to find default fw layout!\n");
+ exit(-1);
+ }
+
+ printf("board = %s\n", p->name);
+ strcpy(kernel->partition_name, "kernel");
+ kernel->partition_index = 1;
+ kernel->partition_baseaddr = p->kern_start;
+ if ( (kernel->partition_length = filelength(kernelfile)) < 0) return (-1);
+ kernel->partition_memaddr = p->kern_entry;
+ kernel->partition_entryaddr = p->kern_entry;
+ strncpy(kernel->filename, kernelfile, sizeof(kernel->filename));
+
+ if (filelength(rootfsfile) + kernel->partition_length > p->firmware_max_length)
+ return (-2);
+
+ strcpy(rootfs->partition_name, "rootfs");
+ rootfs->partition_index = 2;
+ rootfs->partition_baseaddr = kernel->partition_baseaddr + kernel->partition_length;
+ rootfs->partition_length = p->firmware_max_length - kernel->partition_length;
+ rootfs->partition_memaddr = 0x00000000;
+ rootfs->partition_entryaddr = 0x00000000;
+ strncpy(rootfs->filename, rootfsfile, sizeof(rootfs->filename));
+
+printf("kernel: %d 0x%08x\n", kernel->partition_length, kernel->partition_baseaddr);
+printf("root: %d 0x%08x\n", rootfs->partition_length, rootfs->partition_baseaddr);
+ im->part_count = 2;
+
+ return 0;
+}
+
+/**
+ * Checks the availability and validity of all image components.
+ * Fills in stats member of the part_data structure.
+ */
+static int validate_image_layout(image_info_t* im)
+{
+ int i;
+
+ if (im->part_count == 0 || im->part_count > MAX_SECTIONS)
+ {
+ ERROR("Invalid part count '%d'\n", im->part_count);
+ return -1;
+ }
+
+ for (i = 0; i < im->part_count; ++i)
+ {
+ part_data_t* d = &im->parts[i];
+ int len = strlen(d->partition_name);
+ if (len == 0 || len > 16)
+ {
+ ERROR("Invalid partition name '%s' of the part %d\n",
+ d->partition_name, i);
+ return -1;
+ }
+ if (stat(d->filename, &d->stats) < 0)
+ {
+ ERROR("Couldn't stat file '%s' from part '%s'\n",
+ d->filename, d->partition_name);
+ return -2;
+ }
+ if (d->stats.st_size == 0)
+ {
+ ERROR("File '%s' from part '%s' is empty!\n",
+ d->filename, d->partition_name);
+ return -3;
+ }
+ if (d->stats.st_size > d->partition_length) {
+ ERROR("File '%s' too big (%d) - max size: 0x%08X (exceeds %lu bytes)\n",
+ d->filename, i, d->partition_length,
+ d->stats.st_size - d->partition_length);
+ return -4;
+ }
+ }
+
+ return 0;
+}
+
+static int build_image(image_info_t* im)
+{
+ char* mem;
+ char* ptr;
+ u_int32_t mem_size;
+ FILE* f;
+ int i;
+
+ // build in-memory buffer
+ mem_size = sizeof(header_t) + sizeof(signature_t);
+ for (i = 0; i < im->part_count; ++i)
+ {
+ part_data_t* d = &im->parts[i];
+ mem_size += sizeof(part_t) + d->stats.st_size + sizeof(part_crc_t);
+ }
+
+ mem = (char*)calloc(mem_size, 1);
+ if (mem == NULL)
+ {
+ ERROR("Cannot allocate memory chunk of size '%u'\n", mem_size);
+ return -1;
+ }
+
+ // write header
+ write_header(mem, im->magic, im->version);
+ ptr = mem + sizeof(header_t);
+ // write all parts
+ for (i = 0; i < im->part_count; ++i)
+ {
+ part_data_t* d = &im->parts[i];
+ int rc;
+ if ((rc = write_part(ptr, d)) != 0)
+ {
+ ERROR("ERROR: failed writing part %u '%s'\n", i, d->partition_name);
+ }
+ ptr += sizeof(part_t) + d->stats.st_size + sizeof(part_crc_t);
+ }
+ // write signature
+ write_signature(mem, mem_size - sizeof(signature_t));
+
+ // write in-memory buffer into file
+ if ((f = fopen(im->outputfile, "w")) == NULL)
+ {
+ ERROR("Can not create output file: '%s'\n", im->outputfile);
+ return -10;
+ }
+
+ if (fwrite(mem, mem_size, 1, f) != 1)
+ {
+ ERROR("Could not write %d bytes into file: '%s'\n",
+ mem_size, im->outputfile);
+ return -11;
+ }
+
+ free(mem);
+ fclose(f);
+ return 0;
+}
+
+
+int main(int argc, char* argv[])
+{
+ char kernelfile[PATH_MAX];
+ char rootfsfile[PATH_MAX];
+ char board_name[PATH_MAX];
+ int o, rc;
+ image_info_t im;
+
+ memset(&im, 0, sizeof(im));
+ memset(kernelfile, 0, sizeof(kernelfile));
+ memset(rootfsfile, 0, sizeof(rootfsfile));
+ memset(board_name, 0, sizeof(board_name));
+
+ strcpy(im.outputfile, DEFAULT_OUTPUT_FILE);
+ strcpy(im.version, DEFAULT_VERSION);
+ strncpy(im.magic, MAGIC_HEADER, sizeof(im.magic));
+
+ while ((o = getopt(argc, argv, OPTIONS)) != -1)
+ {
+ switch (o) {
+ case 'v':
+ if (optarg)
+ strncpy(im.version, optarg, sizeof(im.version));
+ break;
+ case 'o':
+ if (optarg)
+ strncpy(im.outputfile, optarg, sizeof(im.outputfile));
+ break;
+ case 'm':
+ if (optarg)
+ strncpy(im.magic, optarg, sizeof(im.magic));
+ break;
+ case 'h':
+ usage(argv[0]);
+ return -1;
+ case 'k':
+ if (optarg)
+ strncpy(kernelfile, optarg, sizeof(kernelfile));
+ break;
+ case 'r':
+ if (optarg)
+ strncpy(rootfsfile, optarg, sizeof(rootfsfile));
+ break;
+ case 'B':
+ if (optarg)
+ strncpy(board_name, optarg, sizeof(board_name));
+ break;
+ }
+ }
+ if (strlen(board_name) == 0)
+ strcpy(board_name, "XS2"); /* default to XS2 */
+
+ if (strlen(kernelfile) == 0)
+ {
+ ERROR("Kernel file is not specified, cannot continue\n");
+ usage(argv[0]);
+ return -2;
+ }
+
+ if (strlen(rootfsfile) == 0)
+ {
+ ERROR("Root FS file is not specified, cannot continue\n");
+ usage(argv[0]);
+ return -2;
+ }
+
+ if ((rc = create_image_layout(kernelfile, rootfsfile, board_name, &im)) != 0)
+ {
+ ERROR("Failed creating firmware layout description - error code: %d\n", rc);
+ return -3;
+ }
+
+ if ((rc = validate_image_layout(&im)) != 0)
+ {
+ ERROR("Failed validating firmware layout - error code: %d\n", rc);
+ return -4;
+ }
+
+ print_image_info(&im);
+
+ if ((rc = build_image(&im)) != 0)
+ {
+ ERROR("Failed building image file '%s' - error code: %d\n", im.outputfile, rc);
+ return -5;
+ }
+
+ return 0;
+}
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