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[PATCH 02/19] target/arm: add arm_is_el2_enabled() helper
From: |
remi . denis . courmont |
Subject: |
[PATCH 02/19] target/arm: add arm_is_el2_enabled() helper |
Date: |
Tue, 12 Jan 2021 12:44:54 +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>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/cpu.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index ad37ff61c6..0881e0157d 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2072,6 +2072,18 @@ 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)
{
@@ -2082,6 +2094,11 @@ static inline bool arm_is_secure(CPUARMState *env)
{
return false;
}
+
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+ return false;
+}
#endif
/**
--
2.30.0
- [PATCHv5 00/19] ARMv8.4-A Secure EL2, Rémi Denis-Courmont, 2021/01/12
- [PATCH 01/19] target/arm: remove redundant tests, remi . denis . courmont, 2021/01/12
- [PATCH 04/19] target/arm: use arm_hcr_el2_eff() where applicable, remi . denis . courmont, 2021/01/12
- [PATCH 02/19] target/arm: add arm_is_el2_enabled() helper,
remi . denis . courmont <=
- [PATCH 05/19] target/arm: factor MDCR_EL2 common handling, remi . denis . courmont, 2021/01/12
- [PATCH 08/19] target/arm: add MMU stage 1 for Secure EL2, remi . denis . courmont, 2021/01/12
- [PATCH 10/19] target/arm: handle VMID change in secure state, remi . denis . courmont, 2021/01/12
- [PATCH 09/19] target/arm: add ARMv8.4-SEL2 system registers, remi . denis . courmont, 2021/01/12
- [PATCH 06/19] target/arm: declare new AA64PFR0 bit-fields, remi . denis . courmont, 2021/01/12
- [PATCH 03/19] target/arm: use arm_is_el2_enabled() where applicable, remi . denis . courmont, 2021/01/12
- [PATCH 11/19] target/arm: do S1_ptw_translate() before address space lookup, remi . denis . courmont, 2021/01/12
- [PATCH 14/19] target/arm: secure stage 2 translation regime, remi . denis . courmont, 2021/01/12
- [PATCH 12/19] target/arm: translate NS bit in page-walks, remi . denis . courmont, 2021/01/12