It's SST 49LF004. It the replacement for SST49LF040. They use same argorithm to flash. I looked the flash_and_burn utility. That's the case there too.
beneo.
----- Original Message ----- From: YhLu To: beneo ; linuxbios@openbios.org Sent: Thursday, May 12, 2005 9:53 AM Subject: RE: [LinuxBIOS] flash issue with AMD Ref board
SST49LF004 or SST49LF040 ?
YH
---------------------------------------------------------------------------- From: beneo [mailto:beneo@comcast.net] Sent: Wednesday, May 11, 2005 7:20 PM To: beneo; YhLu; linuxbios@openbios.org Subject: Re: [LinuxBIOS] flash issue with AMD Ref board
YhLu,
EEPOM should be SST 49LF004, sorry.
I also get the CPU version, it's a print out from cat /proc/cpuinfo. Total two CPU, I put the the second CPU here.
processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 5 model name : 02/05 stepping : 8 cpu MHz : 1395.089 cache size : 1024 KB physical id : 0 siblings : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall mmxext l m 3dnowext 3dnow bogomips : 2785.28
Thanks
Beneo
----- Original Message ----- From: beneo To: YhLu ; linuxbios@openbios.org Sent: Wednesday, May 11, 2005 7:14 PM Subject: Re: [LinuxBIOS] flash issue with AMD Ref board
EEPROM is SST 48LF004.
I install 2GB to CPU0 and 2GB to CPU1. I use 512MB DIMM, 4 DIMM per CPU, so total should be 4GB. But linux command cat /proc/meminfo report one 2 GB when using LinuxBIOS.
I have two opteron CPU, I'm not sure the version though.
thanks
beneo
----- Original Message ----- From: YhLu To: beneo ; linuxbios@openbios.org Sent: Wednesday, May 11, 2005 7:27 PM Subject: RE: [LinuxBIOS] flash issue with AMD Ref board
what is EEPROM in your BIOS socket?
How do you install your DIMM? 4x1G in CPU0?
What is your cpu version?
YH
---------------------------------------------------------------------- From: beneo [mailto:beneo@comcast.net] Sent: Wednesday, May 11, 2005 6:57 PM To: linuxbios@openbios.org Subject: [LinuxBIOS] flash issue with AMD Ref board
I'm playing with the AMD seranede board. The flash_and_burn utility can not program linuxBIOS to the flash. but I can read the linuxbios and save to a file correctly.
If I boot from AMI BIOS, using same utility, I can program a linuxBIOS into the flash. That made me believe some setting by linuxBIOS on the AMD Ref board is not right. I just don't know what.
I used gdb to trace the code, Flash_and_burn utility enables flash by program two AMD Southbridge 8111 registers, One for enable 4MB window to flash (DevB, 0x43), one for enable write to the flash (DevB, 0x40). I checked the AMD datasheet, it seems all it need. But if I boot with LinuxBIOS, the flash erase command has no effect. with AMI BIOS, I can sucessfully erase a sector.
could anybody give me some pointer on what to check?
I should add, the linuxBIOS only reports 2GB memory when I really have 4GB in the system. I don't know if this have something to do with my issue.
Thanks
Beneo
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