F2A85-M coreboot not working

[Rostislav Lisovy]

Hello;
I am trying to run coreboot on F2A85-M motherboard (without VGA support
enabled). The CPU used is AMD Trinity A8-5600K, RAM is Kingston HyperX
PnP 4GB (2x2GB) DDR3 1866
(http://www.kingston.com/datasheets/KHX1866C11D3P1K2_4G.pdf).

I cloned the coreboot repository and ran 'make menuconfig'. The only
options I set were motherboard vendor and type (RAM voltage is the
default value of 1.5V). The desired payload is the default SeaBIOS. I
have no interest in enabling VGA, thus I did not try to enable it.
I used flashrom to flash the image. When I try to boot, execution fails
with the following message (full log in the attachment):

Enabling resources...

Fam15 - domain_enable_resources: AmdInitMid.
  agesawrapper_amdinitmid Unexpected Exception: 0 @ 10:0022fabf - Halting
  Code: 0 eflags: 00010046
  eax: 0002e630 ebx: 0000014d ecx: 00000002 edx: 00000000
  edi: 100123e3 esi: 00000000 ebp: 10000660 esp: 002bcd60

The number on my PCI POST card is "0x1".

Unfortunately I have no other RAM modules to try. I tried to change the
position from blue slots to black slots but then I got:

coreboot-4.0-5584-ge92155f-dirty Sat Mar  1 21:05:40 CET 2014 starting...
  BSP Family_Model: 00610f01 
  cpu_init_detectedx = 00000000 
  agesawrapper_amdinitreset Fch OEM config in INIT RESET Done
  Got past agesawrapper_amdinitearly
  ASSERTION FAILED: file 'src/vendorcode/amd/agesa/f15tn/Proc/Mem/Main/mmExcludeDimm.c',  line 236

The command 'make crossgcc' also seems not to help at all.

I will appreciate any ideas.

Regards;
Rostislav Lisovy

[Scott Duplichan]

Rostislav Lisovy [mailto:[e-mail]] wrote:

]Hello;
]I am trying to run coreboot on F2A85-M motherboard (without VGA support
]enabled). The CPU used is AMD Trinity A8-5600K, RAM is Kingston HyperX
]PnP 4GB (2x2GB) DDR3 1866
](http://www.kingston.com/datasheets/KHX1866C11D3P1K2_4G.pdf).
]
]I cloned the coreboot repository and ran 'make menuconfig'. The only
]options I set were motherboard vendor and type (RAM voltage is the
]default value of 1.5V). The desired payload is the default SeaBIOS. I
]have no interest in enabling VGA, thus I did not try to enable it.
]I used flashrom to flash the image. When I try to boot, execution fails
]with the following message (full log in the attachment):
]
]  Enabling resources...
]
]  Fam15 - domain_enable_resources: AmdInitMid.
]  agesawrapper_amdinitmid Unexpected Exception: 0 @ 10:0022fabf - Halting
]  Code: 0 eflags: 00010046
]  eax: 0002e630 ebx: 0000014d ecx: 00000002 edx: 00000000
]  edi: 100123e3 esi: 00000000 ebp: 10000660 esp: 002bcd60

This looks like a divide exception. Finding the source code
for the failing divide might help narrow down the problem. I
can't recreate your binary exactly so I can't find the failing
instruction from the eip value. But based on register values,
it looks like it is somewhere around line 334 of file
amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c
You might be able to use the link map, disassembly, or debug
prints to figure out the exact source line that is failing.
Thanks,
Scott

]The number on my PCI POST card is "0x1".
]
]Unfortunately I have no other RAM modules to try. I tried to change the
]position from blue slots to black slots but then I got:
]
]  coreboot-4.0-5584-ge92155f-dirty Sat Mar  1 21:05:40 CET 2014 starting...
]  BSP Family_Model: 00610f01 
]  cpu_init_detectedx = 00000000 
]  agesawrapper_amdinitreset Fch OEM config in INIT RESET Done
]  Got past agesawrapper_amdinitearly
]  ASSERTION FAILED: file 'src/vendorcode/amd/agesa/f15tn/Proc/Mem/Main/mmExcludeDimm.c',  line 236
]
]The command 'make crossgcc' also seems not to help at all.
]
]I will appreciate any ideas.
]
]Regards;
]Rostislav Lisovy

[Rostislav Lisovy]

On Sun, 2014-03-02 at 00:00 -0600, Scott Duplichan wrote:
> This looks like a divide exception. Finding the source code
> for the failing divide might help narrow down the problem. I
> can't recreate your binary exactly so I can't find the failing
> instruction from the eip value. But based on register values,
> it looks like it is somewhere around line 334 of file
> amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c
> You might be able to use the link map, disassembly, or debug
> prints to figure out the exact source line that is failing.

I compiled the GDB support and connected to it from the other computer.
The outcome of the debugging:

_text () at src/arch/x86/lib/c_start.S:89
warning: Source file is more recent than executable.
89		call	main
(gdb) c
Continuing.

Program received signal SIGFPE, Arithmetic exception.
0x0022fabf in GfxGmcInitializeSequencerTN (Gfx=0x10000660) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c:334
warning: Source file is more recent than executable.
334	  scale_mp0 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps0_freq;

(gdb) p memps0_freq
$1 = 0

(gdb) p Gfx
$2 = (GFX_PLATFORM_CONFIG *) 0x10000660

(gdb) l
329	  }
330	
331	  //scale_mp0 = sclk_max_freq / memps0_freq
332	  //scale_mp1 = sclk_max_freq / memps1_freq
333	  //Multiply it by 100 to avoid dealing with floating point values
334	  scale_mp0 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps0_freq;
335	  scale_mp1 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps1_freq;
336	
337	  GnbRegisterReadTN (TYPE_GMM , 0x2774 , &ex1047.Value, 0, GnbLibGetHeader (Gfx));
338	  GnbRegisterReadTN (TYPE_GMM , 0x2778 , &ex1048.Value, 0, GnbLibGetHeader (Gfx));

(gdb) p memps1_freq
$5 = 333

Regards;
Rostislav Lisovy

[Scott Duplichan]

Rostislav Lisovy [mailto:[e-mail]] wrote:

]On Sun, 2014-03-02 at 00:00 -0600, Scott Duplichan wrote:
]> This looks like a divide exception. Finding the source code
]> for the failing divide might help narrow down the problem. I
]> can't recreate your binary exactly so I can't find the failing
]> instruction from the eip value. But based on register values,
]> it looks like it is somewhere around line 334 of file
]> amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c
]> You might be able to use the link map, disassembly, or debug
]> prints to figure out the exact source line that is failing.
]
]I compiled the GDB support and connected to it from the other computer.
]The outcome of the debugging:
]
]_text () at src/arch/x86/lib/c_start.S:89
]warning: Source file is more recent than executable.
]89		call	main
](gdb) c
]Continuing.
]
]Program received signal SIGFPE, Arithmetic exception.
]0x0022fabf in GfxGmcInitializeSequencerTN (Gfx=0x10000660) at
]src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c:334
]warning: Source file is more recent than executable.
]334	  scale_mp0 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps0_freq;
]
](gdb) p memps0_freq
]$1 = 0
]
](gdb) p Gfx
]$2 = (GFX_PLATFORM_CONFIG *) 0x10000660
]
](gdb) l
]329	  }
]330	
]331	  //scale_mp0 = sclk_max_freq / memps0_freq
]332	  //scale_mp1 = sclk_max_freq / memps1_freq
]333	  //Multiply it by 100 to avoid dealing with floating point values
]334	  scale_mp0 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps0_freq;
]335	  scale_mp1 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps1_freq;
]336	
]337	  GnbRegisterReadTN (TYPE_GMM , 0x2774 , &ex1047.Value, 0, GnbLibGetHeader (Gfx));
]338	  GnbRegisterReadTN (TYPE_GMM , 0x2778 , &ex1048.Value, 0, GnbLibGetHeader (Gfx));
]
](gdb) p memps1_freq
]$5 = 333

It is good to see you have a debugger working. That confirms the problem
really is line 334. You dumped memps1_freq, but line 334 divides by
memps0_freq. Presumable memps0_freq is zero. If the failing instruction 
is "div esi", then memps0_freq=0 is confirmed by your original email that
shows value 0 in the esi register.

Apparently something is going wrong with the code a few lines above
that initializes memps0_freq. You could step through that code and try
to understand the problem. You could also try forcing a non-zero value
such as 333 into memps0_freq to see how much farther execution gets.
Thanks,
Scott

]Regards;
]Rostislav Lisovy

[Rostislav Lisovy]

On Sun, 2014-03-02 at 00:00 -0600, Scott Duplichan wrote:
> This looks like a divide exception. Finding the source code
> for the failing divide might help narrow down the problem. I
> can't recreate your binary exactly so I can't find the failing
> instruction from the eip value. But based on register values,
> it looks like it is somewhere around line 334 of file
> amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c
> You might be able to use the link map, disassembly, or debug
> prints to figure out the exact source line that is failing.

I forgot to add backtrace so here it comes:

Program received signal SIGFPE, Arithmetic exception.
0x0022fabf in GfxGmcInitializeSequencerTN (Gfx=0x10000660) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c:334
warning: Source file is more recent than executable.
334	  scale_mp0 = (GfxLibGetMaxSclk (GnbLibGetHeader (Gfx)) * 100) / memps0_freq;

(gdb) bt
#0  0x0022fabf in GfxGmcInitializeSequencerTN (Gfx=0x10000660) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c:334
#1  GfxGmcInitTN (Gfx=0x10000660) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxGmcInitTN.c:534
#2  0x00231898 in GfxMidInterfaceTN (StdHeader=0x100123e3) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxMidInitTN.c:183
#3  0x00239f90 in GnbLibDispatchFeatures (ConfigTable=0x2b1a10 <GnbMidFeatureTable+12>, StdHeader=StdHeader@entry=0x100123e3)
    at src/vendorcode/amd/agesa/f15tn/Proc/GNB/Common/GnbLibFeatures.c:99
#4  0x0023a107 in GnbInitAtMid (MidParamsPtr=MidParamsPtr@entry=0x100123e3) at src/vendorcode/amd/agesa/f15tn/Proc/GNB/GnbInitAtMid.c:92
#5  0x00246d98 in AmdInitMid (MidParams=0x100123e3) at src/vendorcode/amd/agesa/f15tn/Proc/Common/AmdInitMid.c:159
#6  0x00262629 in agesawrapper_amdinitmid () at src/mainboard/asus/f2a85-m/agesawrapper.c:398
#7  0x00260308 in domain_enable_resources (dev=0x2afab4 <_dev5>) at src/northbridge/amd/agesa/family15tn/northbridge.c:570
#8  0x0026a4f1 in enable_resources (link=0x2af680 <dev_root_links>) at src/device/device.c:876
#9  0x0026b64f in dev_enable () at src/device/device.c:1121
#10 0x00264a65 in bs_dev_enable (arg=0x0) at src/lib/hardwaremain.c:163
#11 0x00277749 in bs_walk_state_machine () at src/lib/hardwaremain.c:382
#12 main () at src/lib/hardwaremain.c:479

Thanks;
Rostislav Lisovy

[Rudolf Marek]

Hi all,

I'm back. Any news on this issue?

Thanks
Rudolf

[Rostislav Lisovy]

On Mon, 2014-03-10 at 18:13 +0100, Rudolf Marek wrote:
> I'm back. Any news on this issue?

Hello Rudolf;
I tried to debug it but with no success.
I will hopefully continue when I will have more time.

Regards;
Rostislav