Index: sys/arm/arm/locore-v6.S =================================================================== --- sys/arm/arm/locore-v6.S +++ sys/arm/arm/locore-v6.S @@ -45,6 +45,13 @@ #define PTE1_SIZE L1_S_SIZE #endif +#if __ARM_ARCH >= 7 +#if ! (defined(GCC_VERSION) && GCC_VERSION < 4009) + /* For HYP support, either gcc > 4.9 or llvm > 3.6 */ + .arch_extension virt +#endif +#endif + /* A small statically-allocated stack used only during initarm() and AP startup. */ #define INIT_ARM_STACK_SIZE 2048 @@ -76,6 +83,24 @@ mov r10, r2 /* Save meta data */ mov r11, r3 /* Future expansion */ +#if __ARM_ARCH >= 7 + /* Leave HYP mode */ + mrs r0, cpsr + and r0, r0, #(PSR_MODE) /* Mode is in the low 5 bits of CPSR */ + teq r0, #(PSR_HYP32_MODE) /* Hyp Mode? */ + bne no_hyp + adr lr, no_hyp +#if (defined(GCC_VERSION) && GCC_VERSION < 4009) + MSR_ELR_HYP(14) + ERET +#else + msr elr_hyp, lr + eret +#endif + +no_hyp: +#endif + /* * Check whether data cache is enabled. If it is, then we know * current tags are valid (not power-on garbage values) and there @@ -398,6 +423,25 @@ #if defined(SMP) ASENTRY_NP(mpentry) + +#if __ARM_ARCH >= 7 + /* Leave HYP mode */ + mrs r0, cpsr + and r0, r0, #(PSR_MODE) /* Mode is in the low 5 bits of CPSR */ + teq r0, #(PSR_HYP32_MODE) /* Hyp Mode? */ + bne no_hyp_mp + adr lr, no_hyp_mp +#if (defined(GCC_VERSION) && GCC_VERSION < 4009) + MSR_ELR_HYP(14) + ERET +#else + msr elr_hyp, lr + eret +#endif + +no_hyp_mp: +#endif + /* Make sure interrupts are disabled. */ cpsid ifa Index: sys/arm/include/asm.h =================================================================== --- sys/arm/include/asm.h +++ sys/arm/include/asm.h @@ -228,6 +228,17 @@ #define DSB dsb #define DMB dmb #define WFI wfi +#if (defined(GCC_VERSION) && GCC_VERSION < 4009) +/* WORKAROUND: + * This is temporary workaround. Since we still support gcc compiler we + * must create a substitution for current version. When gcc support is + * dropped or gcc is upgraded to version 4.9 or higher (armv7ve) this + * shall be removed. + */ +#define MSR_ELR_HYP(regnum) .word (0xe12ef300 | regnum) +#define ERET .word 0xe160006e +/* WORKAROUND END */ +#endif /* GCC */ #elif __ARM_ARCH == 6 #define ISB mcr CP15_CP15ISB #define DSB mcr CP15_CP15DSB