OK. I thought NVRAM was referring to CMOS in coreboot. You learn me a new thing again. Thank you very much Rudolf. Regards.
> Message du 08/02/10 à 18h02 > De : "Rudolf Marek" <[email protected]> > A : [email protected] > Copie à : "Joseph Smith" <[email protected]>, [email protected] > Objet : Re: [coreboot] M2v-mx_se asus : nvram reset on power unplug > > hi > > This NVRAM is for suspend/resume. So it is only powered if 5VSB is > there. So it is not a real battery backup device. > > The platform has 256 bytes of classic NVRAM (CMOS). I think you can use > ioports 74/75. to get access > to whole 256Bytes. > > (check if PCI 11.0 4e bit 3 is 1) I think it should be. > > Rudolf > > > > > > > > > [email protected] wrote: > > 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 > >> > > > > ____________________________________________________ > > > > Faites le plein d’amour, de cadeaux coquins et de poèmes romantiques avec > > Voila sur http://evenementiel.voila.fr/SaintValentin2010/ > > > > > > > > > > > > > > > -- > coreboot mailing list: [email protected] > http://www.coreboot.org/mailman/listinfo/coreboot ____________________________________________________ A défaut d’un cadeau, envoyez un petit mot ! Retrouvez nos cartes de saint Valentin sur http://carte-de-voeux.voila.fr/ -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
