From b9a348cb12f3925a27fcf0a38a146b40978588d0 Mon Sep 17 00:00:00 2001
From: Marc Zyngier <marc.zyngier@arm.com>
Date: Thu, 9 Aug 2012 10:43:29 +0100
Subject: [PATCH] ARM: opcodes: add __ERET/__MSR_ELR_HYP instruction encoding
Enabling boot from HYP mode requires the use of some more
virt-specific instructions ("eret" and "msr elr_hyp, reg").
Add the necessary encoding to asm/opcode-virt.h.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm/include/asm/opcodes-virt.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/include/asm/opcodes-virt.h b/arch/arm/include/asm/opcodes-virt.h
index b85665a96f8e32..efcfdf92d9d599 100644
--- a/arch/arm/include/asm/opcodes-virt.h
+++ b/arch/arm/include/asm/opcodes-virt.h
@@ -26,4 +26,14 @@
0xF7E08000 | (((imm16) & 0xF000) << 4) | ((imm16) & 0x0FFF) \
)
+#define __ERET __inst_arm_thumb32( \
+ 0xE160006E, \
+ 0xF3DE8F00 \
+)
+
+#define __MSR_ELR_HYP(regnum) __inst_arm_thumb32( \
+ 0xE12EF300 | regnum, \
+ 0xF3808E30 | (regnum << 16) \
+)
+
#endif /* ! __ASM_ARM_OPCODES_VIRT_H */
--
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