AArch32: Disable Secure Cycle Counter
This patch changes implementation for disabling Secure Cycle
Counter. For ARMv8.5 the counter gets disabled by setting
SDCR.SCCD bit on CPU cold/warm boot. For the earlier
architectures PMCR register is saved/restored on secure
world entry/exit from/to Non-secure state, and cycle counting
gets disabled by setting PMCR.DP bit.
In 'include\aarch32\arch.h' header file new
ARMv8.5-PMU related definitions were added.
Change-Id: Ia8845db2ebe8de940d66dff479225a5b879316f8
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
diff --git a/include/arch/aarch32/arch.h b/include/arch/aarch32/arch.h
index 34036d7..2017548 100644
--- a/include/arch/aarch32/arch.h
+++ b/include/arch/aarch32/arch.h
@@ -162,6 +162,7 @@
#define SDCR_SPD_DISABLE U(0x2)
#define SDCR_SPD_ENABLE U(0x3)
#define SDCR_SCCD_BIT (U(1) << 23)
+#define SDCR_SPME_BIT (U(1) << 17)
#define SDCR_RESET_VAL U(0x0)
/* HSCTLR definitions */
@@ -243,6 +244,8 @@
#define VTTBR_BADDR_SHIFT U(0)
/* HDCR definitions */
+#define HDCR_HLP_BIT (U(1) << 26)
+#define HDCR_HPME_BIT (U(1) << 7)
#define HDCR_RESET_VAL U(0x0)
/* HSTR definitions */
@@ -419,8 +422,10 @@
#define PMCR_N_SHIFT U(11)
#define PMCR_N_MASK U(0x1f)
#define PMCR_N_BITS (PMCR_N_MASK << PMCR_N_SHIFT)
+#define PMCR_LP_BIT (U(1) << 7)
#define PMCR_LC_BIT (U(1) << 6)
#define PMCR_DP_BIT (U(1) << 5)
+#define PMCR_RESET_VAL U(0x0)
/*******************************************************************************
* Definitions of register offsets, fields and macros for CPU system