> -----Original Message----- > From: Heiko Schocher [mailto:h...@denx.de] > Sent: Thursday, July 09, 2009 12:05 PM > To: Prafulla Wadaskar > Cc: Wolfgang Denk; U-Boot user list; Prabhanjan Sarnaik; > Ashish Karkare > Subject: Re: [U-Boot] bootcount support on arm/kirkwood > > Hello Prafulla, > > Prafulla Wadaskar wrote: > >> -----Original Message----- > >> From: Wolfgang Denk [mailto:w...@denx.de] > >> Sent: Thursday, July 09, 2009 12:29 AM > >> To: Prafulla Wadaskar > >> Cc: h...@denx.de; U-Boot user list; Prabhanjan Sarnaik; > Ashish Karkare > >> Subject: Re: [U-Boot] bootcount support on arm/kirkwood > >> > >> Dear Prafulla Wadaskar, > >> > >> In message > >> <73173d32e9439e4abb5151606c3e19e202dd54d...@sc-vexch1.marvell. > >> com> you wrote: > >>> > >>>> I searched for some space on this CPU for implementing > >> this feature, > >>>> but could not find any (at least 4 bytes = 1 register), > which not > >>>> lost his value on a reset of this CPU. > >>> There is reset counter register on Kirkwood which counts > >> the time for which H/w Reset is pressed-n-hold. This is generally > >> used to trigger "Factory Reset" Kind of function using reset key. > >>> I don't think you are searching for the same. Do you? > >> No, he doesn't. He needs a register that is guaranteed to > keep it''s > >> values across a processor reset. > > > > With Kirkwood, the only way to implement it is with flash assist > > No chance? Is there really no register/mem array which keep > its value across a processor reset? > > There is a "Security Accelerator SRAM" on this chip. Couldn;t > I use it? (I looked at it, but it seems, the SRAM gets > initialized by reset, but maybe there is a way to deactivate > this initialization?) Do you want only across reboots(i.e. resets)? How about re-power cycle? Regards.. Prafulla . .
> > thanks in advance > Heiko > -- > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
