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[PATCH 02/17] target/arm: add arm_is_el2_enabled() helper
From: |
remi . denis . courmont |
Subject: |
[PATCH 02/17] target/arm: add arm_is_el2_enabled() helper |
Date: |
Mon, 9 Nov 2020 16:10:05 +0200 |
From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
This checks if EL2 is enabled (meaning EL2 registers take effects) in
the current security context.
Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
---
target/arm/cpu.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index c18a916766..adaded6bab 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2040,6 +2040,17 @@ static inline bool arm_is_secure(CPUARMState *env)
return arm_is_secure_below_el3(env);
}
+/* Return true if the current security state has AArch64 EL2 or AArch32 Hyp.
+ * This corresponds to the pseudocode EL2Enabled()
+ */
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+ if (arm_feature(env, ARM_FEATURE_EL2)) {
+ return !arm_is_secure_below_el3(env);
+ }
+ return false;
+}
+
#else
static inline bool arm_is_secure_below_el3(CPUARMState *env)
{
@@ -2050,6 +2061,11 @@ static inline bool arm_is_secure(CPUARMState *env)
{
return false;
}
+
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+ return false;
+}
#endif
/**
--
2.29.2
- [PATCHv2 00/17] ARM Secure EL2 extension, Rémi Denis-Courmont, 2020/11/09
- [PATCH 01/17] target/arm: remove redundant tests, remi . denis . courmont, 2020/11/09
- [PATCH 04/17] target/arm: use arm_hcr_el2_eff() where applicable, remi . denis . courmont, 2020/11/09
- [PATCH 05/17] target/arm: factor MDCR_EL2 common handling, remi . denis . courmont, 2020/11/09
- [PATCH 02/17] target/arm: add arm_is_el2_enabled() helper,
remi . denis . courmont <=
- [PATCH 03/17] target/arm: use arm_is_el2_enabled() where applicable, remi . denis . courmont, 2020/11/09
- [PATCH 06/17] target/arm: declare new AA64PFR0 bit-fields, remi . denis . courmont, 2020/11/09
- [PATCH 11/17] target/arm: do S1_ptw_translate() before address space lookup, remi . denis . courmont, 2020/11/09
- [PATCH 08/17] target/arm: return the stage 2 index for stage 1, remi . denis . courmont, 2020/11/09
- [PATCH 07/17] target/arm: add 64-bit S-EL2 to EL exception table, remi . denis . courmont, 2020/11/09
- [PATCH 09/17] target/arm: add MMU stage 1 for Secure EL2, remi . denis . courmont, 2020/11/09
- [PATCH 14/17] target/arm: set HPFAR_EL2.NS on secure stage 2 faults, remi . denis . courmont, 2020/11/09