feat(rme): add register definitions and helper functions for FEAT_RME
This patch adds new register and bit definitions for the Armv9-A
Realm Management Extension (RME) as described in the Arm
document DDI0615 (https://developer.arm.com/documentation/ddi0615/latest).
The patch also adds TLB maintenance functions and a function to
detect the presence of RME feature.
Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I03d2af7ea41a20a9e8a362a36b8099e3b4d18a11
diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 72b87c8..1aadf0b 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -540,6 +540,10 @@
/* DynamIQ Shared Unit power management */
DEFINE_RENAME_SYSREG_RW_FUNCS(clusterpwrdn_el1, CLUSTERPWRDN_EL1)
+/* Armv9.2 RME Registers */
+DEFINE_RENAME_SYSREG_RW_FUNCS(gptbr_el3, GPTBR_EL3)
+DEFINE_RENAME_SYSREG_RW_FUNCS(gpccr_el3, GPCCR_EL3)
+
#define IS_IN_EL(x) \
(GET_EL(read_CurrentEl()) == MODE_EL##x)
@@ -583,7 +587,28 @@
}
}
-/* Previously defined accesor functions with incomplete register names */
+/*
+ * TLBIPAALLOS instruction
+ * (TLB Inivalidate GPT Information by PA,
+ * All Entries, Outer Shareable)
+ */
+static inline void tlbipaallos(void)
+{
+ __asm__("SYS #6,c8,c1,#4");
+}
+
+/*
+ * Invalidate cached copies of GPT entries
+ * from TLBs by physical address
+ *
+ * @pa: the starting address for the range
+ * of invalidation
+ * @size: size of the range of invalidation
+ */
+void gpt_tlbi_by_pa(uint64_t pa, size_t size);
+
+
+/* Previously defined accessor functions with incomplete register names */
#define read_current_el() read_CurrentEl()