On Wed, 18 Feb 2015 16:26:35 +0300 "nicolae788 ." nicolae788@gmail.com wrote:
Hello,
I am trying to write a chip SST 49LF008A in a P5W-DH board. This is not the original chip of the board, it's a hot flash. The flashrom properly detects the ICH7R chipset and the chip described above, but can only read from it no erase or write. The problem is that it does not enable the TBL pin on the chip, it stays low. I checked if the pin can be enabled by using the onboard flash utility from whitin the original BIOS of this board an i get a high on that pin ( +3.3V ) so it means that the chipset it's doing the work if properly enabled. […] Can someone please instruct me on how to proceed further? Thank you very much for your kindness.
Hi,
as the name suggests a board enable is rather board-specific. It is usually required to toggle a GPIO pin of the southbridge that is connected to the TBL or #WP pin of the flash chip. What needs to be done is actually encoded in the BIOS image (not the flash tool) so it can be recovered by reverse engineering. See http://flashrom.org/Board_Enable for more details.
Thank you very much for your response. I will check the link and hope to manage and enable it. One last question: if a board recognizes a 512kb chip is it normal to not recognize the above described ( SST 49LF008A ) 1Mb chip ??? I have a board with which i could do the flash procedure, it is fully supported by flashrom, flash chip, chipset, board, but it doesn;t seem to find the chip i want to flash. The original 512 Kb chip it's listed when i run flashrom, but when i change chips with the 1Mb one and run again flashrom the new chip it's not recognized...
Thank you
On Wed, Feb 18, 2015 at 11:26 PM, Stefan Tauner < stefan.tauner@alumni.tuwien.ac.at> wrote:
On Wed, 18 Feb 2015 16:26:35 +0300 "nicolae788 ." nicolae788@gmail.com wrote:
Hello,
I am trying to write a chip SST 49LF008A in a P5W-DH board. This is not
the
original chip of the board, it's a hot flash. The flashrom properly
detects
the ICH7R chipset and the chip described above, but can only read from it no erase or write. The problem is that it does not enable the TBL pin on the chip, it stays low. I checked if the pin can be enabled by using the onboard flash utility from whitin the original BIOS of this board an i
get
a high on that pin ( +3.3V ) so it means that the chipset it's doing the work if properly enabled. […] Can someone please instruct me on how to proceed further? Thank you very much for your kindness.
Hi,
as the name suggests a board enable is rather board-specific. It is usually required to toggle a GPIO pin of the southbridge that is connected to the TBL or #WP pin of the flash chip. What needs to be done is actually encoded in the BIOS image (not the flash tool) so it can be recovered by reverse engineering. See http://flashrom.org/Board_Enable for more details. -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner
-
nicolae788 . -
Stefan Tauner