* Sven Schnelle svens@stackframe.org [110321 21:52]:
Hi List,
one of the last remaining problems with the ThinkPad X60 port is that coreboot does a full reset on ACPI S3 wakeup. There's an explicit check that the DRAM self refresh bits in PMSTS (MCHBAR offset 0xf14) are set.
For (yet) unknown reasons, those bits are not set on my Thinkpad after Wakeup, even though suspending works for several days, without the DRAM being refreshed by the Chipset, so i guess Self Refresh is working. I've commented the check out, with the following diff:
Does anyone have an idea why that check fails?
Can you try setting the bits instead? (Maybe in SMM?)
I am very hesitant to let the below patch go in, as certain ram misconfigurations can only be corrected with a cold boot if it goes in.
Stefan
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c index 8b7ffa1..e6990f7 100644 --- a/src/northbridge/intel/i945/raminit.c +++ b/src/northbridge/intel/i945/raminit.c @@ -312,10 +312,12 @@ static void sdram_detect_errors(struct sys_info *sysinfo) }
if (do_reset) {
printk(BIOS_DEBUG, "Reset required.\n");
printk(BIOS_DEBUG, "Reset required. (ignored)\n");+#if 0 outb(0x00, 0xcf9); outb(0x0e, 0xcf9); for (;;) asm("hlt"); /* Wait for reset! */ +#endif } }
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