target-ppc: Add MMU model check for booke machines

Machines bamboo, e500 and virtex-ml507 assume a certain MMU model,
otherwise resulting in unpredictable behavior. Add apropriate checks
into *_init functions.

Signed-off-by: Valentin Plotkin <caliborn@sdf.org>

[regarding virtex parts]
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 6 insertions, 0 deletions

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 792bd79d39..f7df2388c1 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -827,6 +827,12 @@ void ppce500_init(MachineState *machine, PPCE500Params *params)
         env = &cpu->env;
         cs = CPU(cpu);
 
+        if (env->mmu_model != POWERPC_MMU_BOOKE206) {
+            fprintf(stderr, "MMU model %i not supported by this machine.\n",
+                env->mmu_model);
+            exit(1);
+        }
+
         if (!firstenv) {
             firstenv = env;
         }