[v3,27/38] target-microblaze: mmu: Add a configurable output address mask

Commit Message

Edgar E. Iglesias May 16, 2018, 6:51 p.m. UTC

From: "Edgar E. Iglesias" <[e-mail]>

Add a configurable output address mask, used to mimic the
configurable physical address bit width.

Reviewed-by: Alistair Francis <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
Signed-off-by: Edgar E. Iglesias <[e-mail]>
---
 target/microblaze/cpu.c | 1 +
 target/microblaze/mmu.c | 1 +
 target/microblaze/mmu.h | 1 +
 3 files changed, 3 insertions(+)

Patch

diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 2b3f8fa374..d0649fdaaa 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -128,6 +128,7 @@  static void mb_cpu_reset(CPUState *s)
     env->mmu.c_mmu = 3;
     env->mmu.c_mmu_tlb_access = 3;
     env->mmu.c_mmu_zones = 16;
+    env->mmu.c_addr_mask = MAKE_64BIT_MASK(0, cpu->cfg.addr_size);
 #endif
 }
 
diff --git a/target/microblaze/mmu.c b/target/microblaze/mmu.c
index a379968618..166c79908c 100644
--- a/target/microblaze/mmu.c
+++ b/target/microblaze/mmu.c
@@ -164,6 +164,7 @@  unsigned int mmu_translate(struct microblaze_mmu *mmu,
             tlb_rpn = d & TLB_RPN_MASK;
 
             lu->vaddr = tlb_tag;
+            lu->paddr = tlb_rpn & mmu->c_addr_mask;
             lu->paddr = tlb_rpn;
             lu->size = tlb_size;
             lu->err = ERR_HIT;
diff --git a/target/microblaze/mmu.h b/target/microblaze/mmu.h
index 1714caf82e..9fbdf38f36 100644
--- a/target/microblaze/mmu.h
+++ b/target/microblaze/mmu.h
@@ -72,6 +72,7 @@  struct microblaze_mmu
     int c_mmu;
     int c_mmu_tlb_access;
     int c_mmu_zones;
+    uint64_t c_addr_mask; /* Mask to apply to physical addresses.  */
 };
 
 struct microblaze_mmu_lookup