On Wed, 2007-05-09 at 19:58 +0200, Uwe Hermann wrote:
On Wed, May 09, 2007 at 08:20:56AM -0700, roger wrote:
I get random hangs during sdram init.
Hm. My guess is that some RAM parameters don't match your system (66 MHz vs. 100 MHz system bus frequency, or such), or are just plain wrong.
Don't forget, the current code is hardcoded to the S1846 (which I'll fix soon, I hope).
FYI: Attached is the current linuxbios boot log of the DFI P2XBL board using asus/p2b profile.
Seems to be *consistently* hanging at RAM3 (during Northbridge prior to SDRAM init). (Although yanking out 2 dimms gets me a step or two further ... with failing errors.)
The board has 3 PC100 SDRAM 128MB modules with only 3 DIMM sockets for a total of ~384MB.
(Dunno if the following dmesg of this motherboard will help. I'll probably be studying DRAM structure and a good 82443BX chip pdf tonight.)
BIOS-provided physical RAM map: sanitize start sanitize end copy_e820_map() start: 0000000000000000 size: 00000000000a0000 end: 00000000000a0000 type: 1 copy_e820_map() type is E820_RAM copy_e820_map() start: 00000000000f0000 size: 0000000000010000 end: 0000000000100000 type: 2 copy_e820_map() start: 0000000000100000 size: 0000000017ef0000 end: 0000000017ff0000 type: 1 copy_e820_map() type is E820_RAM copy_e820_map() start: 0000000017ff0000 size: 0000000000003000 end: 0000000017ff3000 type: 4 copy_e820_map() start: 0000000017ff3000 size: 000000000000d000 end: 0000000018000000 type: 3 copy_e820_map() start: 00000000ffff0000 size: 0000000000010000 end: 0000000100000000 type: 2 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 0000000017ff0000 (usable) BIOS-e820: 0000000017ff0000 - 0000000017ff3000 (ACPI NVS) BIOS-e820: 0000000017ff3000 - 0000000018000000 (ACPI data) BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved) 383MB LOWMEM available
-- Roger http://www.eskimo.com/~roger/index.html Key fingerprint = 8977 A252 2623 F567 70CD 1261 640F C963 1005 1D61
Wed May 9 16:04:48 PDT 2007