[LinuxBIOS] flash issue with AMD Ref board

YhLu YhLu at tyan.com
Thu May 12 20:17:31 CEST 2005


004 only can be use in intel platform. FW hub interface...
 
040 can be used in AMD platform. LPC interface...
 
PMC 004 support two interface...
 
YH


  _____  

From: beneo [mailto:beneo at comcast.net] 
Sent: Thursday, May 12, 2005 10:46 AM
To: YhLu; linuxbios at openbios.org
Subject: Re: [LinuxBIOS] flash issue with AMD Ref board


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 <mailto:YhLu at tyan.com>  
To: beneo <mailto:beneo at comcast.net>  ; linuxbios at openbios.org
<mailto:linuxbios at 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 at comcast.net] 
Sent: Wednesday, May 11, 2005 7:20 PM
To: beneo; YhLu; linuxbios at openbios.org <mailto:linuxbios at 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 <mailto:beneo at comcast.net>  
To: YhLu <mailto:YhLu at tyan.com>  ; linuxbios at openbios.org
<mailto:linuxbios at 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 <mailto:YhLu at tyan.com>  
To: beneo <mailto:beneo at comcast.net>  ; linuxbios at openbios.org
<mailto:linuxbios at 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 at comcast.net] 
Sent: Wednesday, May 11, 2005 6:57 PM
To: linuxbios at openbios.org <mailto:linuxbios at 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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