APRESIA Systems ApresiaLightGSシリーズも恐らく同じ
DGS-1210-28 F1のGPL tar内のMakefile, plfmake.h、 host/tools/ のツール類から
ヘッダ
ApresiaLightGSシリーズだと0x17に1byte何かが居る
0x0 0x4 0x8 0xC
+-------------------+-------------------+-------------------+-------------------+
0x0 | Checksum *1 | Model Name ->|
+-------------------+-------------------+-------------------+-------------------+
0x10 |-> (Model Name) | Signature ->|
+-------------------+-------------------+----+----+----+----+-------------------+
0x20 |-> (Signature) | *3 | *4 | *5 | *6 | Board Version |
+-------------------+-------------------+----+----+----+----+-------------------+
0x30 | Data Length | Entry Point (text) |
+-------------------+-------------------+-------------------+-------------------+
*1: Checksum
data without block header (unit: 1byte, (addr 0x0) + (addr 0x1) + ...)
*2: Signature
Kernel -> "os"
RootFS (SquashFS) -> "squashfs"
*3: Partition Index
*4: Header Length??
*5: Encrypted
*6: Customer Signature
フッタ
0x0 0x4 0x8 0xC
+-------------------+-------------------+-------------------+-------------------+
0x0 | FW Version (text) |
+-------------------+-------------------+-------------------+-------------------+
0x10 |'C' 'A' 'M' 'E' 'O' 'T' 'A' 'G' | OS Version | Checksum *1 |
+-------------------+-------------------+-------------------+-------------------+
1: Checksum
data without block header and last 4bytes of checksum
(unit: 1byte, (addr 0x0) + (addr 0x1) + ...)
フッタのChecksumに、それを1byte分ずつ足したものがヘッダのChecksumになる 例:
- ヘッダ:
0x07953DD6 - フッタ:
0x07953C7F
0x07953C7F + 0x07 + 0x95 + 0x3C + 0x7F = 0x7953DD6
imghdr (APRESIA)実行結果
ApresiaLightGS120GT-SSのGPLソースコードとしてAPRESIA Systemsから提供を受けたもの
使用方法のメッセージと実際の引数の順番で、customer_sig と encrypted が入れ替わっている模様
tofu@Tofu-B450HVUB16:~/apresia⟫ ./imghdr aplgsR10104_blk_os_nohead.bin aplgsR10104_blk_os.hex.new APRESIA os 3 0 2 4 Usage: imghdr src dest model signature partition customer_sig encrypted board_ver os_dump 255 tofu@Tofu-B450HVUB16:~/apresia⟫ ./imghdr aplgsR10104_blk_os_nohead.bin aplgsR10104_blk_os.hex.new APRESIA os 3 0 2 4 vmlinux.dump [imghdr]:Linux start address:0x80562f38 [imghdr]:hdr_len is 64 [imghdr]:model name: APRESIA [imghdr]:signatue: os [imghdr]:partition is 3 [imghdr]:encrypted is 0 [imghdr]:customer signature is 2 [imghdr]:board version is 67108864(4) [imghdr]:aplgsR10104_blk_os_nohead.bin len is 936272 [imghdr]:checksum = 7953dd6
os_dumpはOpenWrtの適当なvmlinuxを用いた為stockと異なる
tofu@Tofu-B450HVUB16:~/apresia⟫ hexdump -n 64 -C aplgsR10104_blk_os.hex.new 00000000 07 95 3d d6 41 50 52 45 53 49 41 00 00 00 00 00 |..=.APRESIA.....| 00000010 00 00 00 00 00 00 00 02 6f 73 00 00 00 00 00 00 |........os......| 00000020 00 00 00 00 00 00 00 00 03 40 00 02 00 00 00 04 |.........@......| 00000030 00 0e 49 50 30 78 38 30 35 36 32 66 33 38 00 00 |..IP0x80562f38..| 00000040
imgtag (APRESIA)実行結果
tofu@Tofu-B450HVUB16:~/apresia⟫ ./imgtag aplgsR10104_blk_os_nohead_notag.bin 1 1.00.010 [imgtag]:src len is 936240 [imgtag]:success write FW 1.00.010 to aplgsR10104_blk_os_nohead_notag.bin!! [imgtag]:success to create CAMEOTAG!! [imgtag]:success to create version 1!!
imgtagの後にgenTotalChecksumを実行することでCAMEOTAG行末尾にチェックサムが付加される
tofu@Tofu-B450HVUB16:~/apresia⟫ hexdump -n 256 -C -s $((0xE48B0)) aplgsR10104_blk_os_nohead_notag.bin
000e48b0 5f fa f0 c3 7e ff 27 86 fe f6 fc a6 ee a6 aa 37 |_...~.'........7|
000e48c0 5a 56 7b df de 72 64 49 69 a9 bb f3 b2 4d a3 5b |ZV{..rdIi....M.[|
000e48d0 fe b9 e4 3d bb 4a ef 4b fc b2 fb 4b 07 3f 7b f9 |...=.J.K...K.?{.|
000e48e0 37 ae ff c8 a5 1f 79 3c fa 91 85 e7 fe e8 f6 8e |7.....y<........|
000e48f0 fe 2f fc e3 39 3b 5f bb f9 e2 3d ff 73 e9 9f ff |./..9;_...=.s...|
000e4900 5c 7b e8 33 95 a5 07 1e 6b 2a bb 36 bc ac 79 70 |\{.3....k*.6..yp|
000e4910 fb a3 9b 6f 1b 1c 1a aa 71 13 7e ef 6f b9 e8 10 |...o....q.~.o...|
000e4920 98 b5 ff 1b 06 ef 8a 95 86 d0 23 00 00 00 00 00 |..........#.....|
000e4930 31 2e 30 30 2e 30 31 30 00 00 00 00 00 00 00 00 |1.00.010........|
000e4940 43 41 4d 45 4f 54 41 47 00 00 00 01 |CAMEOTAG....|
000e494c
