The default value of MSRC001_001A (Top of Memory below the 4GB limit) according to BKDG for AMD Fam 10h rev. 3.06 is undefined (after Reset/power-on). However, AMD64 Architecture Programmer's Manual Volume 2: System Programming Rev. 3.14 states that the value of MSRC001_001A after Reset or power on is: 0000_0000_0400_0000h
Which one of this information is correct?
I need to know it because I want to know what is the default MMIO range after reset.
Thanks.
On Wed, Jan 20, 2010 at 2:13 AM, Darmawan Salihun darmawan.salihun@gmail.com wrote:
The default value of MSRC001_001A (Top of Memory below the 4GB limit) according to BKDG for AMD Fam 10h rev. 3.06 is undefined (after Reset/power-on). However, AMD64 Architecture Programmer's Manual Volume 2: System Programming Rev. 3.14 states that the value of MSRC001_001A after Reset or power on is: 0000_0000_0400_0000h
Which one of this information is correct?
I need to know it because I want to know what is the default MMIO range after reset.
Hi Darmawan,
I think that the BKDG is correct. I get 000_0001F_7780_0000 on a K8. You can take a look at cpu/amd/car/cache_as_ram.inc for the initial setup.
Marc
Hi Mark,
Thanks. I'll have a look.
-Darmawan
On 1/22/10, Marc Jones marcj303@gmail.com wrote:
On Wed, Jan 20, 2010 at 2:13 AM, Darmawan Salihun darmawan.salihun@gmail.com wrote:
The default value of MSRC001_001A (Top of Memory below the 4GB limit) according to BKDG for AMD Fam 10h rev. 3.06 is undefined (after Reset/power-on). However, AMD64 Architecture Programmer's Manual Volume 2: System Programming Rev. 3.14 states that the value of MSRC001_001A after Reset or power on is: 0000_0000_0400_0000h
Which one of this information is correct?
I need to know it because I want to know what is the default MMIO range after reset.
Hi Darmawan,
I think that the BKDG is correct. I get 000_0001F_7780_0000 on a K8. You can take a look at cpu/amd/car/cache_as_ram.inc for the initial setup.
Marc
-
Darmawan Salihun -
Marc Jones