firmware-utils/mkplinkfw: add TL-WA801ND v2 support
[openwrt.git] / tools / firmware-utils / src / mktplinkfw.c
index 8d3ee14..1c3f49d 100644 (file)
 #include <errno.h>
 #include <sys/stat.h>
 
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
 #include "md5.h"
 
-#if (__BYTE_ORDER == __BIG_ENDIAN)
-#  define HOST_TO_BE32(x)      (x)
-#  define BE32_TO_HOST(x)      (x)
-#else
-#  define HOST_TO_BE32(x)      bswap_32(x)
-#  define BE32_TO_HOST(x)      bswap_32(x)
-#endif
+#define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
 
 #define HEADER_VERSION_V1      0x01000000
+#define HWID_TL_MR10U_V1       0x00100101
+#define HWID_TL_MR13U_V1       0x00130101
+#define HWID_TL_MR3020_V1      0x30200001
 #define HWID_TL_MR3220_V1      0x32200001
+#define HWID_TL_MR3220_V2      0x32200002
 #define HWID_TL_MR3420_V1      0x34200001
+#define HWID_TL_MR3420_V2      0x34200002
+#define HWID_TL_WA701N_V1      0x07010001
+#define HWID_TL_WA7510N_V1     0x75100001
+#define HWID_TL_WA801ND_V1     0x08010001
+#define HWID_TL_WA830RE_V1     0x08300010
+#define HWID_TL_WA830RE_V2     0x08300002
+#define HWID_TL_WA801ND_V2     0x08010002
 #define HWID_TL_WA901ND_V1     0x09010001
 #define HWID_TL_WA901ND_V2     0x09010002
+#define HWID_TL_WDR4900_V1     0x49000001
+#define HWID_TL_WR703N_V1      0x07030101
+#define HWID_TL_WR720N_V3      0x07200103
 #define HWID_TL_WR741ND_V1     0x07410001
+#define HWID_TL_WR741ND_V4     0x07410004
 #define HWID_TL_WR740N_V1      0x07400001
-#define HWID_TL_WR740N_V3      0x07400300
+#define HWID_TL_WR740N_V3      0x07400003
 #define HWID_TL_WR743ND_V1     0x07430001
+#define HWID_TL_WR743ND_V2     0x07430002
 #define HWID_TL_WR841N_V1_5    0x08410002
 #define HWID_TL_WR841ND_V3     0x08410003
 #define HWID_TL_WR841ND_V5     0x08410005
@@ -48,6 +61,9 @@
 #define HWID_TL_WR941ND_V2     0x09410002
 #define HWID_TL_WR941ND_V4     0x09410004
 #define HWID_TL_WR1043ND_V1    0x10430001
+#define HWID_TL_WR1043ND_V2    0x10430002
+#define HWID_TL_WR1041N_V2     0x10410002
+#define HWID_TL_WR2543N_V1     0x25430001
 
 #define MD5SUM_LEN     16
 
@@ -76,19 +92,27 @@ struct fw_header {
        uint32_t        rootfs_len;     /* rootfs data length */
        uint32_t        boot_ofs;       /* bootloader data offset */
        uint32_t        boot_len;       /* bootloader data length */
-       uint8_t         pad[360];
+       uint16_t        ver_hi;
+       uint16_t        ver_mid;
+       uint16_t        ver_lo;
+       uint8_t         pad[354];
 } __attribute__ ((packed));
 
-struct board_info {
+struct flash_layout {
        char            *id;
-       uint32_t        hw_id;
-       uint32_t        hw_rev;
        uint32_t        fw_max_len;
        uint32_t        kernel_la;
        uint32_t        kernel_ep;
        uint32_t        rootfs_ofs;
 };
 
+struct board_info {
+       char            *id;
+       uint32_t        hw_id;
+       uint32_t        hw_rev;
+       char            *layout_id;
+};
+
 /*
  * Globals
  */
@@ -96,17 +120,31 @@ static char *ofname;
 static char *progname;
 static char *vendor = "TP-LINK Technologies";
 static char *version = "ver. 1.0";
+static char *fw_ver = "0.0.0";
 
 static char *board_id;
 static struct board_info *board;
+static char *layout_id;
+static struct flash_layout *layout;
+static char *opt_hw_id;
+static uint32_t hw_id;
+static char *opt_hw_rev;
+static uint32_t hw_rev;
+static int fw_ver_lo;
+static int fw_ver_mid;
+static int fw_ver_hi;
 static struct file_info kernel_info;
 static uint32_t kernel_la = 0;
 static uint32_t kernel_ep = 0;
+static uint32_t kernel_len = 0;
 static struct file_info rootfs_info;
 static uint32_t rootfs_ofs = 0;
+static uint32_t rootfs_align;
 static struct file_info boot_info;
 static int combined;
 static int strip_padding;
+static int add_jffs2_eof;
+static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
 
 static struct file_info inspect_info;
 static int extract = 0;
@@ -121,127 +159,213 @@ char md5salt_boot[MD5SUM_LEN] = {
        0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 };
 
-static struct board_info boards[] = {
+static struct flash_layout layouts[] = {
        {
-               .id             = "TL-MR3220v1",
-               .hw_id          = HWID_TL_MR3220_V1,
-               .hw_rev         = 1,
+               .id             = "4M",
                .fw_max_len     = 0x3c0000,
                .kernel_la      = 0x80060000,
                .kernel_ep      = 0x80060000,
                .rootfs_ofs     = 0x140000,
        }, {
-               .id             = "TL-MR3420v1",
-               .hw_id          = HWID_TL_MR3420_V1,
-               .hw_rev         = 1,
+               .id             = "4Mlzma",
                .fw_max_len     = 0x3c0000,
                .kernel_la      = 0x80060000,
                .kernel_ep      = 0x80060000,
+               .rootfs_ofs     = 0x100000,
+       }, {
+               .id             = "8M",
+               .fw_max_len     = 0x7c0000,
+               .kernel_la      = 0x80060000,
+               .kernel_ep      = 0x80060000,
                .rootfs_ofs     = 0x140000,
        }, {
+               .id             = "8Mlzma",
+               .fw_max_len     = 0x7c0000,
+               .kernel_la      = 0x80060000,
+               .kernel_ep      = 0x80060000,
+               .rootfs_ofs     = 0x100000,
+       }, {
+               .id             = "16Mppc",
+               .fw_max_len     = 0xf80000,
+               .kernel_la      = 0x00000000,
+               .kernel_ep      = 0xc0000000,
+               .rootfs_ofs     = 0x2a0000,
+       }, {
+               /* terminating entry */
+       }
+};
+
+static struct board_info boards[] = {
+       {
+               .id             = "TL-MR10Uv1",
+               .hw_id          = HWID_TL_MR10U_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-MR13Uv1",
+               .hw_id          = HWID_TL_MR13U_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-MR3020v1",
+               .hw_id          = HWID_TL_MR3020_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-MR3220v1",
+               .hw_id          = HWID_TL_MR3220_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-MR3220v2",
+               .hw_id          = HWID_TL_MR3220_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-MR3420v1",
+               .hw_id          = HWID_TL_MR3420_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-MR3420v2",
+               .hw_id          = HWID_TL_MR3420_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-WA701Nv1",
+               .hw_id          = HWID_TL_WA701N_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WA7510N",
+               .hw_id          = HWID_TL_WA7510N_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WA801NDv1",
+               .hw_id          = HWID_TL_WA801ND_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WA830REv1",
+               .hw_id          = HWID_TL_WA830RE_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WA830REv2",
+               .hw_id          = HWID_TL_WA830RE_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WA801NDv2",
+               .hw_id          = HWID_TL_WA801ND_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
                .id             = "TL-WA901NDv1",
                .hw_id          = HWID_TL_WA901ND_V1,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WA901NDv2",
                .hw_id          = HWID_TL_WA901ND_V2,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WDR4900v1",
+               .hw_id          = HWID_TL_WDR4900_V1,
+               .hw_rev         = 1,
+               .layout_id      = "16Mppc",
        }, {
                .id             = "TL-WR741NDv1",
                .hw_id          = HWID_TL_WR741ND_V1,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WR741NDv4",
+               .hw_id          = HWID_TL_WR741ND_V4,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
        }, {
                .id             = "TL-WR740Nv1",
                .hw_id          = HWID_TL_WR740N_V1,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR740Nv3",
                .hw_id          = HWID_TL_WR740N_V3,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR743NDv1",
                .hw_id          = HWID_TL_WR743ND_V1,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WR743NDv2",
+               .hw_id          = HWID_TL_WR743ND_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
        }, {
                .id             = "TL-WR841Nv1.5",
                .hw_id          = HWID_TL_WR841N_V1_5,
                .hw_rev         = 2,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR841NDv3",
                .hw_id          = HWID_TL_WR841ND_V3,
                .hw_rev         = 3,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR841NDv5",
                .hw_id          = HWID_TL_WR841ND_V5,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR841NDv7",
                .hw_id          = HWID_TL_WR841ND_V7,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR941NDv2",
                .hw_id          = HWID_TL_WR941ND_V2,
                .hw_rev         = 2,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
        }, {
                .id             = "TL-WR941NDv4",
                .hw_id          = HWID_TL_WR941ND_V4,
                .hw_rev         = 1,
-               .fw_max_len     = 0x3c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "4M",
+       }, {
+               .id             = "TL-WR1041Nv2",
+               .hw_id          = HWID_TL_WR1041N_V2,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
        }, {
                .id             = "TL-WR1043NDv1",
                .hw_id          = HWID_TL_WR1043ND_V1,
                .hw_rev         = 1,
-               .fw_max_len     = 0x7c0000,
-               .kernel_la      = 0x80060000,
-               .kernel_ep      = 0x80060000,
-               .rootfs_ofs     = 0x140000,
+               .layout_id      = "8M",
+       }, {
+               .id             = "TL-WR1043NDv2",
+               .hw_id          = HWID_TL_WR1043ND_V2,
+               .hw_rev         = 1,
+               .layout_id      = "8Mlzma",
+       }, {
+               .id             = "TL-WR2543Nv1",
+               .hw_id          = HWID_TL_WR2543N_V1,
+               .hw_rev         = 1,
+               .layout_id      = "8Mlzma",
+       }, {
+               .id             = "TL-WR703Nv1",
+               .hw_id          = HWID_TL_WR703N_V1,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
+       }, {
+               .id             = "TL-WR720Nv3",
+               .hw_id          = HWID_TL_WR720N_V3,
+               .hw_rev         = 1,
+               .layout_id      = "4Mlzma",
        }, {
                /* terminating entry */
        }
@@ -295,6 +419,21 @@ static struct board_info *find_board_by_hwid(uint32_t hw_id)
        return NULL;
 }
 
+static struct flash_layout *find_layout(char *id)
+{
+       struct flash_layout *ret;
+       struct flash_layout *l;
+
+       ret = NULL;
+       for (l = layouts; l->id != NULL; l++){
+               if (strcasecmp(id, l->id) == 0) {
+                       ret = l;
+                       break;
+               }
+       };
+
+       return ret;
+}
 
 static void usage(int status)
 {
@@ -309,13 +448,19 @@ static void usage(int status)
 "  -c              use combined kernel image\n"
 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
+"  -H <hwid>       use hardware id specified with <hwid>\n"
+"  -W <hwrev>      use hardware revision specified with <hwrev>\n"
+"  -F <id>         use flash layout specified with <id>\n"
 "  -k <file>       read kernel image from the file <file>\n"
 "  -r <file>       read rootfs image from the file <file>\n"
+"  -a <align>      align the rootfs start on an <align> bytes boundary\n"
 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 "  -o <file>       write output to the file <file>\n"
 "  -s              strip padding from the end of the image\n"
+"  -j              add jffs2 end-of-filesystem markers\n"
 "  -N <vendor>     set image vendor to <vendor>\n"
 "  -V <version>    set image version to <version>\n"
+"  -v <version>    set firmware version to <version>\n"
 "  -i <file>       inspect given firmware file <file>\n"
 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 "  -h              show this screen\n"
@@ -392,22 +537,47 @@ static int check_options(void)
                return -1;
        }
 
-       if (board_id == NULL) {
-               ERR("no board specified");
+       if (board_id == NULL && opt_hw_id == NULL) {
+               ERR("either board or hardware id must be specified");
                return -1;
        }
 
-       board = find_board(board_id);
-       if (board == NULL) {
-               ERR("unknown/unsupported board id \"%s\"", board_id);
+       if (board_id) {
+               board = find_board(board_id);
+               if (board == NULL) {
+                       ERR("unknown/unsupported board id \"%s\"", board_id);
+                       return -1;
+               }
+               if (layout_id == NULL)
+                       layout_id = board->layout_id;
+
+               hw_id = board->hw_id;
+               hw_rev = board->hw_rev;
+       } else {
+               if (layout_id == NULL) {
+                       ERR("flash layout is not specified");
+                       return -1;
+               }
+               hw_id = strtoul(opt_hw_id, NULL, 0);
+
+               if (opt_hw_rev)
+                       hw_rev = strtoul(opt_hw_rev, NULL, 0);
+               else
+                       hw_rev = 1;
+       }
+
+       layout = find_layout(layout_id);
+       if (layout == NULL) {
+               ERR("unknown flash layout \"%s\"", layout_id);
                return -1;
        }
+
        if (!kernel_la)
-               kernel_la = board->kernel_la;
+               kernel_la = layout->kernel_la;
        if (!kernel_ep)
-               kernel_ep = board->kernel_ep;
+               kernel_ep = layout->kernel_ep;
        if (!rootfs_ofs)
-               rootfs_ofs = board->rootfs_ofs;
+               rootfs_ofs = layout->rootfs_ofs;
 
        if (kernel_info.file_name == NULL) {
                ERR("no kernel image specified");
@@ -418,18 +588,15 @@ static int check_options(void)
        if (ret)
                return ret;
 
+       kernel_len = kernel_info.file_size;
+
        if (combined) {
                if (kernel_info.file_size >
-                   board->fw_max_len - sizeof(struct fw_header)) {
+                   layout->fw_max_len - sizeof(struct fw_header)) {
                        ERR("kernel image is too big");
                        return -1;
                }
        } else {
-               if (kernel_info.file_size >
-                   rootfs_ofs - sizeof(struct fw_header)) {
-                       ERR("kernel image is too big");
-                       return -1;
-               }
                if (rootfs_info.file_name == NULL) {
                        ERR("no rootfs image specified");
                        return -1;
@@ -439,10 +606,30 @@ static int check_options(void)
                if (ret)
                        return ret;
 
-               if (rootfs_info.file_size >
-                    (board->fw_max_len - rootfs_ofs)) {
-                       ERR("rootfs image is too big");
-                       return -1;
+               if (rootfs_align) {
+                       kernel_len += sizeof(struct fw_header);
+                       kernel_len = ALIGN(kernel_len, rootfs_align);
+                       kernel_len -= sizeof(struct fw_header);
+
+                       DBG("kernel length aligned to %u", kernel_len);
+
+                       if (kernel_len + rootfs_info.file_size >
+                           layout->fw_max_len - sizeof(struct fw_header)) {
+                               ERR("images are too big");
+                               return -1;
+                       }
+               } else {
+                       if (kernel_info.file_size >
+                           rootfs_ofs - sizeof(struct fw_header)) {
+                               ERR("kernel image is too big");
+                               return -1;
+                       }
+
+                       if (rootfs_info.file_size >
+                           (layout->fw_max_len - rootfs_ofs)) {
+                               ERR("rootfs image is too big");
+                               return -1;
+                       }
                }
        }
 
@@ -451,6 +638,12 @@ static int check_options(void)
                return -1;
        }
 
+       ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
+       if (ret != 3) {
+               ERR("invalid firmware version '%s'", fw_ver);
+               return -1;
+       }
+
        return 0;
 }
 
@@ -460,30 +653,68 @@ static void fill_header(char *buf, int len)
 
        memset(hdr, 0, sizeof(struct fw_header));
 
-       hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
+       hdr->version = htonl(HEADER_VERSION_V1);
        strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
        strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
-       hdr->hw_id = HOST_TO_BE32(board->hw_id);
-       hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
+       hdr->hw_id = htonl(hw_id);
+       hdr->hw_rev = htonl(hw_rev);
 
        if (boot_info.file_size == 0)
                memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
        else
                memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 
-       hdr->kernel_la = HOST_TO_BE32(kernel_la);
-       hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
-       hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
-       hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
-       hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
+       hdr->kernel_la = htonl(kernel_la);
+       hdr->kernel_ep = htonl(kernel_ep);
+       hdr->fw_length = htonl(layout->fw_max_len);
+       hdr->kernel_ofs = htonl(sizeof(struct fw_header));
+       hdr->kernel_len = htonl(kernel_len);
        if (!combined) {
-               hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
-               hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
+               hdr->rootfs_ofs = htonl(rootfs_ofs);
+               hdr->rootfs_len = htonl(rootfs_info.file_size);
        }
 
+       hdr->ver_hi = htons(fw_ver_hi);
+       hdr->ver_mid = htons(fw_ver_mid);
+       hdr->ver_lo = htons(fw_ver_lo);
+
        get_md5(buf, len, hdr->md5sum1);
 }
 
+static int pad_jffs2(char *buf, int currlen)
+{
+       int len;
+       uint32_t pad_mask;
+
+       len = currlen;
+       pad_mask = (64 * 1024);
+       while ((len < layout->fw_max_len) && (pad_mask != 0)) {
+               uint32_t mask;
+               int i;
+
+               for (i = 10; i < 32; i++) {
+                       mask = 1 << i;
+                       if (pad_mask & mask)
+                               break;
+               }
+
+               len = ALIGN(len, mask);
+
+               for (i = 10; i < 32; i++) {
+                       mask = 1 << i;
+                       if ((len & (mask - 1)) == 0)
+                               pad_mask &= ~mask;
+               }
+
+               for (i = 0; i < sizeof(jffs2_eof_mark); i++)
+                       buf[len + i] = jffs2_eof_mark[i];
+
+               len += sizeof(jffs2_eof_mark);
+       }
+
+       return len;
+}
+
 static int write_fw(char *data, int len)
 {
        FILE *f;
@@ -524,7 +755,7 @@ static int build_fw(void)
        int ret = EXIT_FAILURE;
        int writelen = 0;
 
-       buflen = board->fw_max_len;
+       buflen = layout->fw_max_len;
 
        buf = malloc(buflen);
        if (!buf) {
@@ -538,15 +769,25 @@ static int build_fw(void)
        if (ret)
                goto out_free_buf;
 
-       writelen = kernel_info.file_size;
+       writelen = sizeof(struct fw_header) + kernel_len;
 
        if (!combined) {
-               p = buf + rootfs_ofs;
+               if (rootfs_align)
+                       p = buf + writelen;
+               else
+                       p = buf + rootfs_ofs;
+
                ret = read_to_buf(&rootfs_info, p);
                if (ret)
                        goto out_free_buf;
 
-               writelen = rootfs_ofs + rootfs_info.file_size;
+               if (rootfs_align)
+                       writelen += rootfs_info.file_size;
+               else
+                       writelen = rootfs_ofs + rootfs_info.file_size;
+
+               if (add_jffs2_eof)
+                       writelen = pad_jffs2(buf, writelen);
        }
 
        if (!strip_padding)
@@ -652,18 +893,18 @@ static int inspect_fw(void)
        inspect_fw_pstr("File name", inspect_info.file_name);
        inspect_fw_phexdec("File size", inspect_info.file_size);
 
-       if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
+       if (ntohl(hdr->version) != HEADER_VERSION_V1) {
                ERR("file does not seem to have V1 header!\n");
                goto out_free_buf;
        }
 
        inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 
-       if (BE32_TO_HOST(hdr->unk1) != 0)
+       if (ntohl(hdr->unk1) != 0)
                inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 
        memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
-       if (BE32_TO_HOST(hdr->boot_len) == 0)
+       if (ntohl(hdr->boot_len) == 0)
                memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
        else
                memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
@@ -675,62 +916,63 @@ static int inspect_fw(void)
        } else {
                inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
        }
-       if (BE32_TO_HOST(hdr->unk2) != 0)
+       if (ntohl(hdr->unk2) != 0)
                inspect_fw_phexdec("Unknown value 2", hdr->unk2);
        inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
                           "(purpose yet unknown, unchecked here)");
-       if (BE32_TO_HOST(hdr->unk3) != 0)
+       if (ntohl(hdr->unk3) != 0)
                inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 
        printf("\n");
 
        inspect_fw_pstr("Vendor name", hdr->vendor_name);
        inspect_fw_pstr("Firmware version", hdr->fw_version);
-       board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
+       board = find_board_by_hwid(ntohl(hdr->hw_id));
        if (board) {
+               layout = find_layout(board->layout_id);
                inspect_fw_phexpost("Hardware ID",
-                                   BE32_TO_HOST(hdr->hw_id), board->id);
+                                   ntohl(hdr->hw_id), board->id);
                inspect_fw_phexexp("Hardware Revision",
-                                  BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
+                                  ntohl(hdr->hw_rev), board->hw_rev);
        } else {
                inspect_fw_phexpost("Hardware ID",
-                                   BE32_TO_HOST(hdr->hw_id), "unknown");
+                                   ntohl(hdr->hw_id), "unknown");
                inspect_fw_phex("Hardware Revision",
-                               BE32_TO_HOST(hdr->hw_rev));
+                               ntohl(hdr->hw_rev));
        }
 
        printf("\n");
 
        inspect_fw_phexdec("Kernel data offset",
-                          BE32_TO_HOST(hdr->kernel_ofs));
+                          ntohl(hdr->kernel_ofs));
        inspect_fw_phexdec("Kernel data length",
-                          BE32_TO_HOST(hdr->kernel_len));
+                          ntohl(hdr->kernel_len));
        if (board) {
                inspect_fw_phexdef("Kernel load address",
-                                  BE32_TO_HOST(hdr->kernel_la),
-                                  board->kernel_la);
+                                  ntohl(hdr->kernel_la),
+                                  layout ? layout->kernel_la : 0xffffffff);
                inspect_fw_phexdef("Kernel entry point",
-                                  BE32_TO_HOST(hdr->kernel_ep),
-                                  board->kernel_ep);
+                                  ntohl(hdr->kernel_ep),
+                                  layout ? layout->kernel_ep : 0xffffffff);
                inspect_fw_phexdecdef("Rootfs data offset",
-                                     BE32_TO_HOST(hdr->rootfs_ofs),
-                                     board->rootfs_ofs);
+                                     ntohl(hdr->rootfs_ofs),
+                                     layout ? layout->rootfs_ofs : 0xffffffff);
        } else {
                inspect_fw_phex("Kernel load address",
-                               BE32_TO_HOST(hdr->kernel_la));
+                               ntohl(hdr->kernel_la));
                inspect_fw_phex("Kernel entry point",
-                               BE32_TO_HOST(hdr->kernel_ep));
+                               ntohl(hdr->kernel_ep));
                inspect_fw_phexdec("Rootfs data offset",
-                                  BE32_TO_HOST(hdr->rootfs_ofs));
+                                  ntohl(hdr->rootfs_ofs));
        }
        inspect_fw_phexdec("Rootfs data length",
-                          BE32_TO_HOST(hdr->rootfs_len));
+                          ntohl(hdr->rootfs_len));
        inspect_fw_phexdec("Boot loader data offset",
-                          BE32_TO_HOST(hdr->boot_ofs));
+                          ntohl(hdr->boot_ofs));
        inspect_fw_phexdec("Boot loader data length",
-                          BE32_TO_HOST(hdr->boot_len));
+                          ntohl(hdr->boot_len));
        inspect_fw_phexdec("Total firmware length",
-                          BE32_TO_HOST(hdr->fw_length));
+                          ntohl(hdr->fw_length));
 
        if (extract) {
                FILE *fp;
@@ -743,8 +985,8 @@ static int inspect_fw(void)
                printf("Extracting kernel to \"%s\"...\n", filename);
                fp = fopen(filename, "w");
                if (fp) {
-                       if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
-                                   BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
+                       if (!fwrite(buf + ntohl(hdr->kernel_ofs),
+                                   ntohl(hdr->kernel_len), 1, fp)) {
                                ERR("error in fwrite(): %s", strerror(errno));
                        }
                        fclose(fp);
@@ -758,8 +1000,8 @@ static int inspect_fw(void)
                printf("Extracting rootfs to \"%s\"...\n", filename);
                fp = fopen(filename, "w");
                if (fp) {
-                       if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
-                                   BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
+                       if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
+                                   ntohl(hdr->rootfs_len), 1, fp)) {
                                ERR("error in fwrite(): %s", strerror(errno));
                        }
                        fclose(fp);
@@ -787,23 +1029,38 @@ int main(int argc, char *argv[])
        while ( 1 ) {
                int c;
 
-               c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
+               c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xhsjv:");
                if (c == -1)
                        break;
 
                switch (c) {
+               case 'a':
+                       sscanf(optarg, "0x%x", &rootfs_align);
+                       break;
                case 'B':
                        board_id = optarg;
                        break;
+               case 'H':
+                       opt_hw_id = optarg;
+                       break;
                case 'E':
                        sscanf(optarg, "0x%x", &kernel_ep);
                        break;
+               case 'F':
+                       layout_id = optarg;
+                       break;
+               case 'W':
+                       opt_hw_rev = optarg;
+                       break;
                case 'L':
                        sscanf(optarg, "0x%x", &kernel_la);
                        break;
                case 'V':
                        version = optarg;
                        break;
+               case 'v':
+                       fw_ver = optarg;
+                       break;
                case 'N':
                        vendor = optarg;
                        break;
@@ -828,6 +1085,9 @@ int main(int argc, char *argv[])
                case 'i':
                        inspect_info.file_name = optarg;
                        break;
+               case 'j':
+                       add_jffs2_eof = 1;
+                       break;
                case 'x':
                        extract = 1;
                        break;