Re: [Qemu-devel] [PATCH] Fix PReP NIP reset value

[Alexander Graf]

On 04/30/2013 05:07 PM, Fabien Chouteau wrote:
The value was changed by the "PPC: fix hreset_vector..." patch.
Signed-off-by: Fabien Chouteau<chout...@adacore.com>
---
  hw/ppc/prep.c |    3 +++
  1 file changed, 3 insertions(+)

diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index cceab3e..2d0c4fe 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -427,6 +427,9 @@ static void ppc_prep_reset(void *opaque)
      PowerPCCPU *cpu = opaque;

      cpu_reset(CPU(cpu));
+
+    /* Reset address */
+    cpu->env.nip = 0xfffffffc;

Why does PREP reset at this vector? Is it architected to that? Does 601 
reset to that offset?

As an interim fix, I think this patch is ok however.


Alex

  }

  /* PowerPC PREP hardware initialisation */