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[Qemu-devel] [PULL 20/36] target-arm: Add QOM property for Secure memory
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PULL 20/36] target-arm: Add QOM property for Secure memory region |
Date: |
Thu, 21 Jan 2016 14:56:13 +0000 |
Add QOM property to the ARM CPU which boards can use to tell us what
memory region to use for secure accesses. Nonsecure accesses
go via the memory region specified with the base CPU class 'memory'
property.
By default, if no secure region is specified it is the same as the
nonsecure region, and if no nonsecure region is specified we will use
address_space_memory.
Signed-off-by: Peter Maydell <address@hidden>
Acked-by: Edgar E. Iglesias <address@hidden>
---
target-arm/cpu-qom.h | 3 +++
target-arm/cpu.c | 32 ++++++++++++++++++++++++++++++++
target-arm/cpu.h | 6 ++++++
3 files changed, 41 insertions(+)
diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h
index 5bd9b7b..333af58 100644
--- a/target-arm/cpu-qom.h
+++ b/target-arm/cpu-qom.h
@@ -87,6 +87,9 @@ typedef struct ARMCPU {
/* GPIO outputs for generic timer */
qemu_irq gt_timer_outputs[NUM_GTIMERS];
+ /* MemoryRegion to use for secure physical accesses */
+ MemoryRegion *secure_memory;
+
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 3f5f8e8..57f1754 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -543,6 +543,15 @@ static void arm_cpu_post_init(Object *obj)
*/
qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el3_property,
&error_abort);
+
+#ifndef CONFIG_USER_ONLY
+ object_property_add_link(obj, "secure-memory",
+ TYPE_MEMORY_REGION,
+ (Object **)&cpu->secure_memory,
+ qdev_prop_allow_set_link_before_realize,
+ OBJ_PROP_LINK_UNREF_ON_RELEASE,
+ &error_abort);
+#endif
}
if (arm_feature(&cpu->env, ARM_FEATURE_MPU)) {
@@ -666,6 +675,29 @@ static void arm_cpu_realizefn(DeviceState *dev, Error
**errp)
init_cpreg_list(cpu);
+#ifndef CONFIG_USER_ONLY
+ if (cpu->has_el3) {
+ cs->num_ases = 2;
+ } else {
+ cs->num_ases = 1;
+ }
+
+ if (cpu->has_el3) {
+ AddressSpace *as;
+
+ if (!cpu->secure_memory) {
+ cpu->secure_memory = cs->memory;
+ }
+ as = address_space_init_shareable(cpu->secure_memory,
+ "cpu-secure-memory");
+ cpu_address_space_init(cs, as, ARMASIdx_S);
+ }
+ cpu_address_space_init(cs,
+ address_space_init_shareable(cs->memory,
+ "cpu-memory"),
+ ARMASIdx_NS);
+#endif
+
qemu_init_vcpu(cs);
cpu_reset(cs);
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 815fef8..9108b5b 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1720,6 +1720,12 @@ static inline int cpu_mmu_index(CPUARMState *env, bool
ifetch)
return el;
}
+/* Indexes used when registering address spaces with cpu_address_space_init */
+typedef enum ARMASIdx {
+ ARMASIdx_NS = 0,
+ ARMASIdx_S = 1,
+} ARMASIdx;
+
/* Return the Exception Level targeted by debug exceptions;
* currently always EL1 since we don't implement EL2 or EL3.
*/
--
1.9.1
- [Qemu-devel] [PULL 00/36] target-arm queue, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 35/36] target-arm: ignore ELR_ELx[1] for exception return to 32-bit ARM mode, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 33/36] target-arm: Handle exception return from AArch64 to non-EL0 AArch32, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 32/36] target-arm: Fix wrong AArch64 entry offset for EL2/EL3 target, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 31/36] target-arm: Pull semihosting handling out to arm_cpu_do_interrupt(), Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 28/36] target-arm: Properly support EL2 and EL3 in arm_el_is_aa64(), Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 20/36] target-arm: Add QOM property for Secure memory region,
Peter Maydell <=
- [Qemu-devel] [PULL 27/36] arm_gic: Update ID registers based on revision, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 23/36] target-arm: Support multiple address spaces in page table walks, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 29/36] target-arm: Move aarch64_cpu_do_interrupt() to helper.c, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 26/36] hw/arm/virt: Add always-on property to the virt board timer, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 30/36] target-arm: Use a single entry point for AArch64 and AArch32 exceptions, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 36/36] target-arm: Implement FPEXC32_EL2 system register, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 08/36] exec.c: Don't set cpu->as until cpu_address_space_init, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 18/36] memory: Add address_space_init_shareable(), Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 24/36] hw/arm/virt: Wire up memory region to CPUs explicitly, Peter Maydell, 2016/01/21
- [Qemu-devel] [PULL 12/36] cpu: Add new asidx_from_attrs() method, Peter Maydell, 2016/01/21