Re: [coreboot] Does the Intel 3100 reboot?

[Carl-Daniel Hailfinger]

On 05.05.2008 00:00, Joe wrote:
> Ed this question is kind of for you but maybe anyone else can answer. I
> have had a few requests to get "reboot" or "shutdown -r now" working on the
> RCA RM4100. Linux goes to reboot it just fine but after the reset the
> memory starts to initialize and then it just hangs. I wondering if this
> code works on the 3100 for reboots?
> if (memory_initialized()) {
> 	asm volatile ("jmp __cpu_reset");
> }
>
> If so I am a little confused by it. It is saying if memory_initialized() is
> true (anything but 0); do the next part. But if you look at the function
> memory_initialized():
>
> static inline int memory_initialized(void)
> {
>    u32 drc;
>    drc = pci_read_config32(NB_DEV, DRC);
>    return (drc & (1<<29));
> }
>
> With the bit shift it is always going to be true (anything but 0). So, why
> the if statement?

It's only true if bit 29 of DRC is set.

Regards,
Carl-Daniel