I use those methods in Seabios.
And as soon as I unplug the power supply, load_state_from_nvram doesn't return
the value saved.
Is something wrong with my methods ?
#define K8T890_NVRAM_IO_BASE 0xf00
int save_state_to_nvram(u32 dword) {
int nvram_pos=64;
dprintf(1,"Writing %x of size 4 to nvram pos: %d\n", dword, nvram_pos);
//size=4
outl(dword, K8T890_NVRAM_IO_BASE+nvram_pos);
nvram_pos +=4;
return nvram_pos;
}
int load_state_from_nvram( u32 *old_dword) {
int nvram_pos=64;
//size=4
*old_dword = inl(K8T890_NVRAM_IO_BASE+nvram_pos);
nvram_pos +=4;
dprintf(1,"Loading %x of size 4 from nvram pos:%d\n", * old_dword,
nvram_pos-4);
return nvram_pos;
}
> Message du 05/02/10 à 20h38
> De : "Joseph Smith" <[email protected]>
> A : [email protected]
> Copie à : [email protected]
> Objet : Re: [coreboot] M2v-mx_se asus : nvram reset on power unplug
>
> On 02/05/2010 02:35 PM, [email protected] wrote:
> >
> >
> >
> >> Message du 05/02/10 à 19h52
> >> De : "Joseph Smith"<[email protected]>
> >> A : [email protected]
> >> Copie à : [email protected]
> >> Objet : Re: [coreboot] M2v-mx_se asus : nvram reset on power unplug
> >>
> >>
> >> On 02/05/2010 01:22 PM, [email protected] wrote:
> >>> Hello,
> >>>
> >>> When I shutdown my computer, my nvram datas are kept alive. But if I
> >>> unplug/plug the power supply, nvram is reset.
> >>> The clock is OK, so it is not a battery problem.
> >>>
> >>> How can I keep datas in nvram when I unplug the power supply ?
> >>>
> >>
> >> Either your CMOS battery is dead or you have RTC issue.
> >
> > But the clock is OK, so I don't think my CMOS battery is dead.
> > Could you tell me more about the RTC issue ?
> >
> Is this with coreboot?
>
>
> --
> Thanks,
> Joseph Smith
> Set-Top-Linux
> www.settoplinux.org
>
> --
> coreboot mailing list: [email protected]
> http://www.coreboot.org/mailman/listinfo/coreboot
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