[LinuxBIOS] I855 raminit.c hang up

[Daniel Toussaint]

Hi,

I have a board with an I852/ICH4 chipset (lspci output attached).

i am trying to get something up and running based on the
digitallogic/adl855pc board.

During memory initialization , in northbridge/intel/i855pm/raminit.c
the system hangs up in do_ram_command() when executing read32(dword) ,
where dword is 0x0000

Ram Enable 3
P:10
R:11
R:00000000

Is this a known problem ? Any tips ? If not,  I will just keep on
trying to find out what is wrong, but given my limited
knowledge/experience with initialization of memory controllers, it may
take me a long time.

Thanks,

------> lspci <----------
0000:00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV
Processor to I/O Controller (rev 02)
0000:00:00.1 System peripheral: Intel Corporation 82852/82855
GM/GME/PM/GMV Processor to I/O Controller (rev 02)
0000:00:00.3 System peripheral: Intel Corporation 82852/82855
GM/GME/PM/GMV Processor to I/O Controller (rev 02)
0000:00:02.0 VGA compatible controller: Intel Corporation 82852/855GM
Integrated Graphics Device (rev 02)
0000:00:02.1 Display controller: Intel Corporation 82852/855GM
Integrated Graphics Device (rev 02)
0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 02)
0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 02)
0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM
(ICH4/ICH4-M) USB2 EHCI Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 82)
0000:00:1f.0 ISA bridge: Intel Corporation 82801DB/DBL (ICH4/ICH4-L)
LPC Interface Bridge (rev 02)
0000:00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE
Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 02)
0000:00:1f.5 Multimedia audio controller: Intel Corporation
82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 02)
0000:01:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE
(CNR) Ethernet Controller (rev 82)

[Ronald G Minnich]

Daniel Toussaint wrote:
> Hi,
>
> I have a board with an I852/ICH4 chipset (lspci output attached).
>
> i am trying to get something up and running based on the
> digitallogic/adl855pc board.
>
> During memory initialization , in northbridge/intel/i855pm/raminit.c
> the system hangs up in do_ram_command() when executing read32(dword) ,
> where dword is 0x0000
>
> Ram Enable 3
> P:10
> R:11
> R:00000000
>
> Is this a known problem ? Any tips ? If not,  I will just keep on
> trying to find out what is wrong, but given my limited
> knowledge/experience with initialization of memory controllers, it may
> take me a long time.

it's a known problem. The fix is to get intel to talk to you about this 
chipset. Good luck, they're not friendly. Can you move to some other 
non-Intel chipset instead of the adl855pc?

thanks

ron