Re: [coreboot] Microcode problem with Braswell CPU

[Alexander Böcken]

Hello Zoran,

again, thanks for your clues to this problem. I don't think post code 0x52 is about
memory configuration. The post code appears when I call TempRamInit which is supposed to
enable Cache-as-RAM. Real memory is initialized at a later call to FspMemoryInit. coreboot
supplies the location of the microcode and a cachable region to TempRamInit. Additionally,
there are some settings that can be applied to the FSP image with Intel's Binary
Configuration Tool. I don't know if these are used during TempRamInit, but I'll
try and fiddle around with them.

I agree, it would be helpful to have a list of post codes that can be output by FSP.
Otherwise it's all speculation as what is wrong.

Regards,
Alex

Microcode problem with Braswell CPU

[Zoran Stojsavljevic]

Hello Alex,

It is awhile... Opportunity just did struck (suddenly/plotzlich), so I am
back!

While lurking around in Coreboot, trying to solve some "Mystery of digital
Orga.ni.sms", I ran into very interesting file:
./src/include/console/post_codes.h

Coreboot tree I am using: [zoran@localhost coreboot-09.06.2016]$ git
describe<CR>
4.4-455-g538b324

Maybe, it is worth looking into it. You tell us?

Zoran

On Tue, May 3, 2016 at 10:28 AM, Alexander Böcken <
Alexander.Boecken(a)junger-audio.com&gt; wrote:

  Hello Zoran,

 again, thanks for your clues to this problem. I don't think post code 0x52
 is about memory configuration. The post code appears when I call
 TempRamInit which is supposed to enable Cache-as-RAM. Real memory is
 initialized at a later call to FspMemoryInit. coreboot supplies the
 location of the microcode and a cachable region to TempRamInit.
 Additionally, there are some settings that can be applied to the FSP image
 with Intel's Binary Configuration Tool. I don't know if these are used
 during TempRamInit, but I'll try and fiddle around with them.

 I agree, it would be helpful to have a list of post codes that can be
 output by FSP. Otherwise it's all speculation as what is wrong.

 Regards,
 Alex