In message <200302161254.35753.ADharankar at ATTBI.Com> you wrote: > > - On MPC75x and MPC7410 boards with MPC8260 in companion > mode, SRAM on 1M and 2M respectively are available. > > - Is it possible to relocate PPCBoot to this SRAM mapped > as private memory? Note that, this is a second relocation; > the first would already have occured when it is relocated > from Flash to SDRAM.
This makes little sense to me. If you want to run U-Boot / PPCBoot from SRAM, then relocate it to that memory in the first place. > - And if this possible, a re-relocation from SRAM back to > SDRAM? Well, _everything_ is possible. But it is not wise to do (or try) everything. > > If this is possible, what needs to be done? The idea I > would like to explore is to do a full memory test (walking > bit, aligned/non-aligned access, refresh, alternating > pattern, random pattern test - basically extensive testing) > without executing PPCBoot in SDRAM. You don't have to do is that complicated. There are many easier ways, for ewxample: You can implement your memory test (which should be non-destructive) as a U-Boot standalone application which gets loaded into and started from SRAM. No nood to relocate U-Boot at all. Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de See us @ Embedded World, Nuremberg, Feb 18-20, Hall 12.0 Booth 12-442 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
