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Opened 8 years ago

Last modified 5 years ago

#77 new defect

hang on the "Jumping to coreboot" step on via epia-m with 4-chip 128Mbyte DDR module

Reported by: bam80@… Owned by: somebody
Priority: major Milestone:
Component: coreboot Keywords: via epia-m ram init jumping to linuxbios hang
Cc: Dependencies:
Patch Status: there is no patch

Description

with 4-chip 128Mbyte single-sided ddr-400 module via epia-m hangs on the "Jumping to LinuxBIOS". With legacy via's bios no problem with this module. After changing to 256Mb 8-chips single-sided module the problem gone away. 512Mb 16-chips dual-sided module works also. 128mb module's chips have following label: KINGMAX KDL668P4LA-50 I used linuxbios image r2611 taken from http://qa.linuxbios.org/overview.php

Attachments (0)

Change History (7)

comment:1 follow-up: Changed 8 years ago by stepan

What Epia-M do you have?

I think the Epia-MII6000e does only support DDR266 (PC2100). Maybe LinuxBIOS clocks the memory too high?

comment:2 follow-up: Changed 8 years ago by stuge

I've always used DDR400 (PC3200) on my mii6000e without problems. I think this problem is due to either broken RAM setup in LB or broken RAM module. (Maybe the SPD EEPROM is lying? Can that be checked easily?)

comment:3 in reply to: ↑ 1 Changed 8 years ago by Andrey Butirskiy <mybigspam@…>

Replying to stepan:

What Epia-M do you have?

looks like VIA EPIA ME6000G, not MII

I think the Epia-MII6000e does only support DDR266 (PC2100). Maybe LinuxBIOS clocks the memory too high?

256mb and 512mb ddr400 modules works just fine

comment:4 in reply to: ↑ 2 Changed 8 years ago by Andrey Butirskiy <mybigspam@…>

Replying to stuge:

I've always used DDR400 (PC3200) on my mii6000e without problems. I think this problem is due to either broken RAM setup in LB or broken RAM module. (Maybe the SPD EEPROM is lying? Can that be checked easily?)

maybe, but legacy bios works fine with memory timings from SPD

comment:5 Changed 8 years ago by stepan

Can you provide north bridge dumps with the bad ram module from both linuxbios (after dram setup, before jumping to the ram part) and legacy bios?

Also, can you dump the spdrom?

There are functions in LinuxBIOS to do this.

comment:6 Changed 7 years ago by stepan

  • Summary changed from hang on the "Jumping to LinuxBIOS" step on via epia-m with 4-chip 128Mbyte ddr module to hang on the "Jumping to coreboot" step on via epia-m with 4-chip 128Mbyte DDR module

comment:7 Changed 5 years ago by stepan

The problem is documented on the VIA Epia-M Wiki page. Only 256MB modules are supported unless someone is willing to fix the code. (It reads like v1 did a better job)

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