Hi Dave, > As a recap I was trying to get 2 specific DDR modules working with the > epia-m. One has ICT chips and the other has GET chips. The ICT module works > with the hardcoded dram configuration, but the GET module doesn't. > ICT = 1 bank 128M colbits = 10 > GET = 2 banks 64M colbits = 9 Same here, but if I set 0x58 to 0xc0, both works.
> I had tried hardcoding the dram settings to the ones award bios uses for the > GET module, but it wasn't working. I figured out what the problem was. > I need to do the ddr setup for each bank on the ddr module, not just the > first one. The hardcoded settings correspond to a ddr with just a single bank. That's right because EPIA-M has only 1 ddr bank. If some custom has more that 1 bank, I can check it. > SPD contents is very easy to access. The epia-m code is including > src/northbridge/via/vt8623/raminit.inc > to initialize ram. I found problems with this, the jedec ddr init spec > sequence calls for reads of the ddr memory, this source actually does some > writes. Thanks for the catch. It has been fixed. The funny thing is writes work, too!!! > I'm wondering what the preferred way of implementing spd for epia-m would > be. Should instead of including src/northbridge/via/vt8623/raminit.inc I put > that code in with the epia-m code, mix it with the smbus SPD read code, > and leave the result in the epia-m tree? Or should I modify the > src/northbridge/via/vt8623/raminit.inc file directly? I don't see how that > can work since the SMBUS/SPD is accessed with the vt8235 registers, but the > DDR dram control registers are part of the northbridge. SMBUS/SPD should be in southbridge like other platforms. Then, mainboard's Config can include those code such that raminit.inc can call later. E7500 is a very nice reference. -Andrew -- Andrew Ip Email: [EMAIL PROTECTED] Tel: (852) 2542 2046 Fax: (852) 2542 2036 Mobile: (852) 9201 9866 Cwlinux Limited Unit 202B 2/F Lai Cheong Factory Building, 479-479A Castle Peak Road, Lai Chi Kok, Kowloon, Hong Kong. Tel: (852)2542 2046 Fax: (852)2542 2036 For public pgp key, please obtain it from http://www.keyserver.net/en. _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
