[Qemu-devel] [PATCH v8 26/27] target-arm: make MAIR0/1 banked

[Greg Bellows <greg.bellows@linaro.org>]

Added CP register info entries for the ARMv7 MAIR0/1 secure banks.

Signed-off-by: Greg Bellows <greg.bellows@linaro.org>

---

v5 -> v6
- Changed _el field variants to be array based
---
 target-arm/cpu.h    | 12 +++++++++++-
 target-arm/helper.c |  8 +++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 348ce73..1a76fc6 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -305,7 +305,17 @@ typedef struct CPUARMState {
         uint32_t c9_pmxevtyper; /* perf monitor event type */
         uint32_t c9_pmuserenr; /* perf monitor user enable */
         uint32_t c9_pminten; /* perf monitor interrupt enables */
-        uint64_t mair_el1;
+        union { /* Memory attribute redirection */
+            struct {
+                uint64_t _unused_mair_0;
+                uint32_t mair0_ns;
+                uint32_t mair1_ns;
+                uint64_t _unused_mair_1;
+                uint32_t mair0_s;
+                uint32_t mair1_s;
+            };
+            uint64_t mair_el[4];
+        };
         union { /* vector base address register */
             struct {
                 uint64_t _unused_vbar;
diff --git a/target-arm/helper.c b/target-arm/helper.c
index d782897..fd5f074 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -939,7 +939,7 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
      */
     { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
-      .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el1),
+      .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
       .resetvalue = 0 },
     /* For non-long-descriptor page tables these are PRRR and NMRR;
      * regardless they still act as reads-as-written for QEMU.
@@ -948,11 +948,13 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
      */
     { .name = "MAIR0", .state = ARM_CP_STATE_AA32, .type = ARM_CP_OVERRIDE,
       .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW,
-      .fieldoffset = offsetoflow32(CPUARMState, cp15.mair_el1),
+      .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s),
+                             offsetof(CPUARMState, cp15.mair0_ns) },
       .resetfn = arm_cp_reset_ignore },
     { .name = "MAIR1", .state = ARM_CP_STATE_AA32, .type = ARM_CP_OVERRIDE,
       .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW,
-      .fieldoffset = offsetofhigh32(CPUARMState, cp15.mair_el1),
+      .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s),
+                             offsetof(CPUARMState, cp15.mair1_ns) },
       .resetfn = arm_cp_reset_ignore },
     { .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0,
-- 
1.8.3.2