MFH list (SPI Flash Layout)

From Inventec mail:

MFH Entry List
 Type                   ID Active Offset     Size       Label
cefdk_s1                00 YES    0x00000000 0x00010000
cefdk_s2                00 YES    0x00010000 0x0006F000
cefdk_s1h               00 YES    0x0007f000 0x00000800
cefdk_s2h               00 YES    0x0007f800 0x00000800
uc8051_fw               00 YES    0x00080800 0x00010000
splash                  00 YES    0x00090800 0x000FD236
script                  00 YES    0x0018da40 0x00000800
cefdk_params            00 YES    0x0018e240 0x000005F0
plat_params             00 YES    0x0018e830 0x00010000
kernel                  00 YES    0x0019e830 0x0030E2FC
user flash              00 NO     0x00300000 0x00000000

I downloaded spi_nor.bin, kbl kernel and reconfigured some parameters. Now on my board it looks like:

shell> mfh list
MFH Entry List
 Type                   ID Active Offset     Size       Label
cefdk_s1                00 YES    0x00000000 0x00010000 
cefdk_s2                00 YES    0x00010000 0x0006F000 
cefdk_s1h               00 YES    0x0007f000 0x00000800 
cefdk_s2h               00 YES    0x0007f800 0x00000800 
uc8051_fw               00 YES    0x00080800 0x00010000 
splash                  00 YES    0x00090800 0x000FD236 
script                  00 YES    0x0018da40 0x00000800 
cefdk_params            00 YES    0x0018e240 0x000005F0 
plat_params             00 YES    0x0018e830 0x00010000 
kernel                  00 YES    0x0019e830 0x0021F180 
user flash              00 NO     0x00300000 0x00000000 

Everything is the same with that of inventec mail, except for kernel size.

MTD device

From inventec email (pptx)

~ # dd if=/dev/mtdblock0 of=/serial.txt bs=1 count=11 skip=1697760
11+0 records in
11+0 records out
~ # cat /serial.txt
801DNN00006
~ # 

I downloaded the whole spi flash by dd

dd if=/dev/mtdblock0 of=spi_flash.bin

Examine this file with VI on pc

vim -b spi_flash.bin

# in VI
:%!xxd

We can find out

BASE: 0x0018e830 (plat_params) 

mac: 6 bytes, hex
00195830: 001e 3310 4005 3005 0000 0000 0000 0000  [email protected].........
offset: 00195830 - 0018e830 = 0x7000

p2p: 20 bytes, ascii
0019e780: 3132 3334 3536 3738 3930 3132 3334 3536  1234567890123456
0019e790: 3738 3930 0000 0000 0000 0000 0000 0000  7890............
offset: 0019e780 - 0018e830 = 0xFF50

S/N: 11 bytes, ascii
0019e7e0: 3830 3144 4e4e 3030 3030 3600 0000 0000  801DNN00006.....
offset: 0019e7e0 - 0018e830 = 0xFFB0

The hex/decimal offset and length

mac : 0x195830 / 1660976 (6)
p2p : 0x19e780 / 1697664 (20)
s/n : 0x19e7e0 / 1697760 (11)

Command

For MAC (this is only the mac address for on-board giga eth, the machine may have other mac, wired or wireless)

root@winsuntech:~# dd if=/dev/mtdblock0 of=file bs=1 skip=1660976 count=6
6+0 records in
6+0 records out
6 bytes (6 B) copied, 0.00287158 s, 2.1 kB/s
root@winsuntech:~# cat file | xxd -p
001e33104005
root@winsuntech:~# 

For P2P

root@winsuntech:~# dd if=/dev/mtdblock0 of=file bs=1 skip=1697664 count=20
20+0 records in
20+0 records out
20 bytes (20 B) copied, 0.00301802 s, 6.6 kB/s
root@winsuntech:~# cat file
12345678901234567890root@winsuntech:~# 

For S/N

root@winsuntech:~# dd if=/dev/mtdblock0 of=file bs=1 skip=1697760 count=11                                                                                                 
11+0 records in
11+0 records out
11 bytes (11 B) copied, 0.00287021 s, 3.8 kB/s
root@winsuntech:~# cat file
801DNN00006root@winsuntech:~#