Flash

NOR Filesystem Format

Header

Header is the first 512 + 16 bytes.

Example

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000010  00 00 00 00 0F AC E0 FF 00 00 00 00 DE AD BE EF  .....¬àÿ....Þ.¾ï
00000020  00 00 00 00 00 00 00 00 00 00 00 00 00 00 78 00  ..............x.
00000030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000040  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000050  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000060  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000070  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000080  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000090  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000000F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000100  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000110  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000120  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000130  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000140  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000150  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000160  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000170  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000180  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000190  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000001F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................

???

The next block of 512 bytes only has the first 16 bytes written.

Example

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000200  49 46 49 00 00 00 00 01 00 00 00 02 00 00 00 00  IFI.............
00000210  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000220  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000230  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000240  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000250  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000260  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000270  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000280  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000290  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002A0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002B0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002C0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002D0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002E0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000002F0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000300  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000310  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000320  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000330  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000340  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000350  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000360  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000370  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000380  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
00000390  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003A0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003B0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003C0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003D0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003E0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000003F0  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ

Entry Table

The next 1024 bytes contain the file entry table:

Format

First is a header, this tells us how many files are stored here.

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000400  00 00 00 01 00 00 00 0B 00 00 00 00 00 EF FC 00  .............ïü.

 u32 - unknown (0x01)
 u32 - Entry count (0x0B)
 u64 - unknown (0xEFFC00)

Then follows a 32 byte entry for each file

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000410  00 00 00 00 00 00 04 00 00 00 00 00 00 02 E8 00  ..............è.
00000420  61 73 65 63 75 72 65 5F 6C 6F 61 64 65 72 00 00  asecure_loader..
00000430  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................

 u64 - offset - Relative to 0x400 (0x400)
 u64 - size (0x2E800)
 char[32] - name (asecure_loader)

Example

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000400  00 00 00 01 00 00 00 0B 00 00 00 00 00 EF FC 00  .............ïü.
00000410  00 00 00 00 00 00 04 00 00 00 00 00 00 02 E8 00  ..............è.
00000420  61 73 65 63 75 72 65 5F 6C 6F 61 64 65 72 00 00  asecure_loader..
00000430  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000440  00 00 00 00 00 02 EC 00 00 00 00 00 00 01 00 00  ......ì.........
00000450  65 45 49 44 00 00 00 00 00 00 00 00 00 00 00 00  eEID............
00000460  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000470  00 00 00 00 00 03 EC 00 00 00 00 00 00 00 08 00  ......ì.........
00000480  63 49 53 44 00 00 00 00 00 00 00 00 00 00 00 00  cISD............
00000490  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000004A0  00 00 00 00 00 03 F4 00 00 00 00 00 00 00 08 00  ......ô.........
000004B0  63 43 53 44 00 00 00 00 00 00 00 00 00 00 00 00  cCSD............
000004C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000004D0  00 00 00 00 00 03 FC 00 00 00 00 00 00 02 00 00  ......ü.........
000004E0  74 72 76 6B 5F 70 72 67 30 00 00 00 00 00 00 00  trvk_prg0.......
000004F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000500  00 00 00 00 00 05 FC 00 00 00 00 00 00 02 00 00  ......ü.........
00000510  74 72 76 6B 5F 70 72 67 31 00 00 00 00 00 00 00  trvk_prg1.......
00000520  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000530  00 00 00 00 00 07 FC 00 00 00 00 00 00 02 00 00  ......ü.........
00000540  74 72 76 6B 5F 70 6B 67 30 00 00 00 00 00 00 00  trvk_pkg0.......
00000550  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000560  00 00 00 00 00 09 FC 00 00 00 00 00 00 02 00 00  ......ü.........
00000570  74 72 76 6B 5F 70 6B 67 31 00 00 00 00 00 00 00  trvk_pkg1.......
00000580  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000590  00 00 00 00 00 0B FC 00 00 00 00 00 00 70 00 00  ......ü......p..
000005A0  72 6F 73 30 00 00 00 00 00 00 00 00 00 00 00 00  ros0............
000005B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000005C0  00 00 00 00 00 7B FC 00 00 00 00 00 00 70 00 00  .....{ü......p..
000005D0  72 6F 73 31 00 00 00 00 00 00 00 00 00 00 00 00  ros1............
000005E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000005F0  00 00 00 00 00 EB FC 00 00 00 00 00 00 04 00 00  .....ëü.........
00000600  63 76 74 72 6D 00 00 00 00 00 00 00 00 00 00 00  cvtrm...........
00000610  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000620  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000630  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000640  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000650  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000660  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000670  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000680  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000690  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000006F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000700  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000710  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000720  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000730  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000740  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000750  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000760  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000770  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000780  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00000790  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
000007F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................