IPL for PPC 603e

I download RTP 6.1 and I would like to make a BSP for PPC603e. I did not
find IPL for that processor so I download PPC603 data sheet to have a
exemple of boot code. I’ve written a IPL but it does not work.
I do this:

  • Re-program the MSR(IP) to ensure the vector interrupt table starts at
  • Invalidate all TLB entries
  • Init HIDO for cache
  • init IPL’s stack
  • and jump to _main

I can see that I don’t have to init IBAT and DBAT for MMU becouse there are
handle by the kernel, is it right ?
Is there anything else to do (SDA SDA2) ?
Does anybody have a exemple of IPL for PPC603e ?