From 5cc8d6682f6bb2934f5303786af6c57e68613a79 Mon Sep 17 00:00:00 2001 From: "macro.wave.z@gmail.com" Date: Thu, 8 Dec 2016 11:58:23 +0800 Subject: [PATCH] ARMv8: Enable SMC instruction PSCI implementation needs the SMC instruction to be enabled. Signed-off-by: Hongbo Zhang Reviewed-by: Tom Rini Reviewed-by: York Sun --- arch/arm/include/asm/macro.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index 2553e3e..e1916f7 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -182,11 +182,17 @@ lr .req x30 /* * The next lower exception level is AArch64, 64bit EL2 | HCE | - * SMD | RES1 (Bits[5:4]) | Non-secure EL0/EL1. + * RES1 (Bits[5:4]) | Non-secure EL0/EL1. + * and the SMD depends on requirements. */ +#ifdef CONFIG_ARMV8_PSCI + ldr \tmp, =(SCR_EL3_RW_AARCH64 | SCR_EL3_HCE_EN |\ + SCR_EL3_RES1 | SCR_EL3_NS_EN) +#else ldr \tmp, =(SCR_EL3_RW_AARCH64 | SCR_EL3_HCE_EN |\ SCR_EL3_SMD_DIS | SCR_EL3_RES1 |\ SCR_EL3_NS_EN) +#endif msr scr_el3, \tmp /* Return to the EL2_SP2 mode from EL3 */ -- 2.7.4