[U-Boot] [PATCH 8/8] ARMv8: PSCI: Enable SMC

Arnab Basu arnab.basu at freescale.com
Wed Aug 27 22:30:01 CEST 2014


Enable the SMC instruction so that the kernel can use the psci code

Signed-off-by: Arnab Basu <arnab.basu at freescale.com>
Reviewed-by: Bhupesh Sharma <bhupesh.sharma at freescale.com>
Cc: Marc Zyngier <marc.zyngier at arm.com>
---
 arch/arm/include/asm/macro.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h
index 0009c28..94a1e68 100644
--- a/arch/arm/include/asm/macro.h
+++ b/arch/arm/include/asm/macro.h
@@ -106,7 +106,11 @@ lr	.req	x30
 .endm
 
 .macro armv8_switch_to_el2_m, xreg1
+#ifdef CONFIG_ARMV8_PSCI
+	mov	\xreg1, #0x531	/* Non-secure EL0/EL1 | HVC | 64bit EL2 */
+#else
 	mov	\xreg1, #0x5b1	/* Non-secure EL0/EL1 | HVC | 64bit EL2 */
+#endif
 	msr	scr_el3, \xreg1
 	msr	cptr_el3, xzr	/* Disable coprocessor traps to EL3 */
 	mov	\xreg1, #0x33ff
-- 
1.7.7.4



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