RE: [LinuxBIOS] flash issue with AMD Ref board

YhLu Thu, 12 May 2005 09:36:08 -0700

SST49LF004 or SST49LF040 ?

From: beneo [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 11, 2005 7:20 PM
To: beneo; YhLu; [email protected]
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 ; [email protected]

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 ; [email protected]

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:[EMAIL PROTECTED]
Sent: Wednesday, May 11, 2005 6:57 PM
To: [email protected]
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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RE: [LinuxBIOS] flash issue with AMD Ref board

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