Disable processor Cycle Counting in Secure state
In a system with ARMv8.5-PMU implemented:
- If EL3 is using AArch32, setting MDCR_EL3.SCCD to 1 disables counting
in Secure state in PMCCNTR.
- If EL3 is using AArch64, setting SDCR.SCCD to 1 disables counting in
Secure state in PMCCNTR_EL0.
So far this effect has been achieved by setting PMCR_EL0.DP (in AArch64)
or PMCR.DP (in AArch32) to 1 instead, but this isn't considered secure
as any EL can change that value.
Change-Id: I82cbb3e48f2e5a55c44d9c4445683c5881ef1f6f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h
index 76c3e27..c65b3a3 100644
--- a/include/arch/aarch64/arch.h
+++ b/include/arch/aarch64/arch.h
@@ -291,16 +291,17 @@
/* MDCR_EL3 definitions */
#define MDCR_SPD32(x) ((x) << 14)
-#define MDCR_SPD32_LEGACY U(0x0)
-#define MDCR_SPD32_DISABLE U(0x2)
-#define MDCR_SPD32_ENABLE U(0x3)
-#define MDCR_SDD_BIT (U(1) << 16)
+#define MDCR_SPD32_LEGACY ULL(0x0)
+#define MDCR_SPD32_DISABLE ULL(0x2)
+#define MDCR_SPD32_ENABLE ULL(0x3)
+#define MDCR_SDD_BIT (ULL(1) << 16)
#define MDCR_NSPB(x) ((x) << 12)
-#define MDCR_NSPB_EL1 U(0x3)
-#define MDCR_TDOSA_BIT (U(1) << 10)
-#define MDCR_TDA_BIT (U(1) << 9)
-#define MDCR_TPM_BIT (U(1) << 6)
-#define MDCR_EL3_RESET_VAL U(0x0)
+#define MDCR_NSPB_EL1 ULL(0x3)
+#define MDCR_TDOSA_BIT (ULL(1) << 10)
+#define MDCR_TDA_BIT (ULL(1) << 9)
+#define MDCR_TPM_BIT (ULL(1) << 6)
+#define MDCR_SCCD_BIT (ULL(1) << 23)
+#define MDCR_EL3_RESET_VAL ULL(0x0)
/* MDCR_EL2 definitions */
#define MDCR_EL2_TPMS (U(1) << 14)