0x54: 0x00000000 FREG0: WARNING: Flash Descriptor region (0x00000000-0x00000fff) is read-only.
0x58: 0x09ff0600 FREG1: BIOS region (0x00600000-0x009fffff) is read-write.
0x5C: 0x05ff0005 FREG2: WARNING: Management Engine region (0x00005000-0x005fffff) is locked.
0x60: 0x00040001 FREG3: Gigabit Ethernet region (0x00001000-0x00004fff) is read-write.
0x64: 0x00001fff FREG4: Platform Data region is unused.
The "Management Engine region" being locked seems to cause the ultimate read failure. By forcing the read to only capture the other sections (changing the address to flash->read in flashrom.c:1500) I can get about 4Mb of data. The data from the BIOS region section seems to be settings as opposed to the actual bios firmware.
I don't understand SPI enough to know why the remaning region is locked or where to start looking to see if I can unlock it. If anyone has any suggestions please let me know.
Cheers,
Dave
On Thu, Jun 21, 2012 at 10:37 AM, David Jones
<dj61451@gmail.com> wrote:
Hi,
I have a Dell E6520 laptop that I'd like to read the flash rom image from. No need to write (yet). Flashrom say its supports the chipset but then fails (using the latest svn version). To help you out I've attached the verbose output.
This laptop is not in use and happy to risk bricking it if it helps you guys out. If there's anything I can do just let me know, game for experimenting and jumping into the code if you can give some pointers.
Cheers,
Dave