feat(brbe): add BRBE support for NS world
This patch enables access to the branch record buffer control registers
in non-secure EL2 and EL1 using the new build option ENABLE_BRBE_FOR_NS.
It is disabled for all secure world, and cannot be used with ENABLE_RME.
This option is disabled by default, however, the FVP platform makefile
enables it for FVP builds.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I576a49d446a8a73286ea6417c16bd0b8de71fca0
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h
index b4608ae..bbbc77a 100644
--- a/include/arch/aarch64/arch.h
+++ b/include/arch/aarch64/arch.h
@@ -234,6 +234,11 @@
#define ID_AA64DFR0_MTPMU_MASK ULL(0xf)
#define ID_AA64DFR0_MTPMU_SUPPORTED ULL(1)
+/* ID_AA64DFR0_EL1.BRBE definitions */
+#define ID_AA64DFR0_BRBE_SHIFT U(52)
+#define ID_AA64DFR0_BRBE_MASK ULL(0xf)
+#define ID_AA64DFR0_BRBE_SUPPORTED ULL(1)
+
/* ID_AA64ISAR0_EL1 definitions */
#define ID_AA64ISAR0_RNDR_SHIFT U(60)
#define ID_AA64ISAR0_RNDR_MASK ULL(0xf)
@@ -512,6 +517,8 @@
#define MDCR_EnPMSN_BIT (ULL(1) << 36)
#define MDCR_MPMX_BIT (ULL(1) << 35)
#define MDCR_MCCD_BIT (ULL(1) << 34)
+#define MDCR_SBRBE_SHIFT U(32)
+#define MDCR_SBRBE_MASK ULL(0x3)
#define MDCR_NSTB(x) ((x) << 24)
#define MDCR_NSTB_EL1 ULL(0x3)
#define MDCR_NSTBE (ULL(1) << 26)