Subject: Relocating PPCBoot into SRAM

From: Arun Dharankar <[email-masked]>
Date: Sun, 16 Feb 2003 12:54:35 -0500

Greetings!

- 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.

- And if this possible, a re-relocation from SRAM back to
  SDRAM?

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.

And that these tests are part of PPCBoot commands (or
applications, perhaps).

Best regards,
-Arun.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/