[coreboot] Porting coreboot on ASUS M5A78L-M LX3

[Alexey Borovikov]

Hi community!

Good news. I was able to port Coreboot on the motherboard asus m5a78l-m lx3. I took for the base source code of two projects - amd mahogany_fam10 and asus m4a785-m. I've added support for DDR3 and graphics core HD3000.

The results are shown below:

     SeaBios 1.9
     Windows 7 SP1
     Ubuntu Linux 15.10
     
      Memory 1600 2 Gb 
     works
     works
     works
     
      Memory 1600 4 Gb 
     works
     works
     is not working USB
      (works only with kernel option mem = 4096M)
     
      Memory 1600 6 Gb
     not working
     not working
     not working
     
      Memory 1600 8 Gb
     works
     works
     not working (permanent reboot)
     
      Integrated video
     works
     works
     works
     
      Integrated Ethernet
     -
     works
     works
     
      Integrated audio
     -
     works
     works
     
      PCI-E 2.0 x1 (Ethernet)
     -
     works
     works
     
      PCI-E 2.0 x16 (video)
     works
     not tested
     works
     
      PCI (Ethernet)
     -
     works
     works
     
      USB 2.0 (8 ports)
     -
     works
     works
     
      SATA (4 ports)
     works
     works
     works
     



Now I have two problems that I can not solve:

1. Memtest86+ memory issues when testing the read / write errors occurs.
2. The problem with the amount of memory on Linux.
The above problems are also included in the projects - amd mahogany_fam10 and asus m4a785-m. These projects I tested the motherboard asus m4a785-m. Also on these issues was described here https://www.coreboot.org/Board:asus/m4a785-m and https://www.coreboot.org/Board:asus/m4a785t-m.
I would be grateful for any help.
Thank you!
From: Alexey Borovikov via coreboot  
Sent: Monday, June 27, 2016 7:37 PM
To: coreboot at coreboot.org 
Subject: Re: [coreboot] Porting coreboot on ASUS M5A78L-M LX3

I was able to start up the internal graphics core, but unfortunately only in text mode. I think the problem in the initialization in funcution - internal_gfx_pci_dev_init and rs780_internal_gfx_enable (src\southbridge\amd\rs780\gfx.c).
The lack of documentation does not give me the opportunity to properly install the necessary bits for gfx.
Thanks for any help.

From: Алексей Боровиковvia coreboot 
Sent: Thursday, May 19, 2016 9:43 PM
To: coreboot at coreboot.org 
Subject: [coreboot] Porting coreboot on ASUS M5A78L-M LX3

Hi!

I need help to porting coreboot Asus M4a785m on Asus M5a78l-m lx3.

I'm trying to porting coreboot on the motherboard Asus M5a78l-m lx3 (rs780l/sb710). I cannot find documentation for the northbridge rs780l.

My configuration:  cpu - Athlon 2 x2 220 (K10), memory - 2 + 2 Gb DDR3, video - Asus GT520, sata segate hdd 500Gb, sata asus dvd-rw.

I have a positive result for the configuration with memory 2Gb and external video card Asus GT520. I can load Linux kernel 2.6.

But, i have two problems:

1. I cannot load coreboot with internal graphics card (hd 3000). Coreboot stops loading and to print on console "Calling option ROM…". May be the problems with gfx configuration?

2. I cannot run Linux with memory 4Gb. Coreboot is loading, SeaBios is loading too, but  Linux stop load on usb3-2 and ata1 setup. May be the problems with memory map?

Please, help me. I can provide all the necessary information from the log coreboot, SeaBios and Linux.

Thanks.



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