some GPIO need to be enabled. I guess.
You need to check the schematic in AMD NDA web site to find out which GPIO control that.
YH
-----Original Message----- From: beneo [mailto:beneo@comcast.net] Sent: Thursday, May 12, 2005 10:57 AM To: Ronald G. Minnich Cc: linuxbios@openbios.org; YhLu Subject: Re: [LinuxBIOS] flash issue with AMD Ref board
Ron,
I was also thinking if the AMD senanade board has some special hardware to protect eeprom write. but after I tried to boot with AMI BIOS into Linux and use same flash_and_burn utility to flash LinuxBIOS into the EEPROM sucessufully, I started to be convienced there are some setup issue within LinuxBIOS caused this.
I spent sometime to check 8111 southbridge, but I couldn't find anything there.
Is that possible some setting in the Opteron that prevent write access to the EEPROM address be passed down southbridge? I'm not farmilar with the Opteron NB and CPU, if you guys can give me some pointers, that would help me a lot.
I don't have a scope now, I will see if I can get one.
Thanks
beneo
----- Original Message ----- From: "Ronald G. Minnich" rminnich@lanl.gov To: "beneo" beneo@comcast.net Cc: linuxbios@openbios.org; "YhLu" YhLu@tyan.com Sent: Thursday, May 12, 2005 7:51 AM Subject: Re: [LinuxBIOS] flash issue with AMD Ref board
the flash problem: this sounds more to me like an enable
line that has
been added for FLASHWR.
Beneo, do you have a scope? it is often useful to put a
scope on the WR
line and see if it is toggling.
ron
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