Winbond W39V040B on ASRock 939DUAL-VSTA

[Henne]

Hi there,

I want to give you some feedback for the W39V040B with flashrom-r893.

Probe works fine:

flashrom v0.9.1-runknown
No coreboot table found.
This chipset supports the following protocols: Non-SPI.
WARNING: No chipset found. Flash detection will most likely fail.
Calibrating delay loop... OK.
Found chip "Winbond W39V040B" (512 KB, LPC) at physical address 0xfff80000.

Reading works fine too, but there are 7451 differences between the original file I flashed with ASRocks tool
and the image I got with flashrom. Extracting both images with bios_extract results in identical files.

Most of the differences are 0xff from the original and 0x00 of flashrom.

Here are the dumps:

Original:

0005fff0  53 43 30 38 30 30 2d 74  20 40 95 d7 0c 00 83 df  |SC0800-t @......|
00060000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00070000  0c 79 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.y..............|

Flashrom:

0005fff0  53 43 30 38 30 30 2d 74  20 40 95 d7 0c 00 83 df  |SC0800-t @......|
00060000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
0006c000  05 00 00 00 00 08 00 00  10 00 01 ff ff ff ff ff  |................|
0006c010  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
0006c800  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0006c840  00 80 01 00 40 00 40 08  10 00 01 ff ff ff ff ff  |....@.@.........|
0006c850  00 13 8f c4 e7 bf 0d 00  ff ff ff ff ff ff ff ff  |................|
0006c860  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
0006c880  08 00 02 00 9a 00 80 08  10 00 01 ff ff ff ff ff  |................|
0006c890  f2 03 ac ce b6 00 00 00  00 00 00 00 00 00 00 00  |................|
0006c8a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0006c8b0  00 00 03 48 48 52 52 43  43 00 00 00 00 00 00 00  |...HHRRCC.......|
0006c8c0  00 00 00 02 00 01 03 04  05 06 07 00 00 00 00 01  |................|
0006c8d0  b9 ff 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0006c8e0  00 00 00 00 00 00 00 00  00 01 02 03 04 05 06 07  |................|
0006c8f0  08 09 0a 0b 00 00 00 00  01 52 5c 00 00 00 00 00  |.........R.....|
0006c900  00 00 01 03 01 00 00 00  00 01 ff d2 00 00 00 00  |................|
0006c910  00 00 00 01 02 03 00 00  00 00 00 00 00 00 00 00  |................|
0006c920  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0006e540  00 00 00 00 ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0006e550  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00070000  0c 79 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.y..............|

Erasing and Writing doesn't work. :(

Greets,
Henne