diff options
Diffstat (limited to 'arch/arm/cpu/armv8/fwcall.c')
| -rw-r--r-- | arch/arm/cpu/armv8/fwcall.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm/cpu/armv8/fwcall.c b/arch/arm/cpu/armv8/fwcall.c index 079e250..6bb68f2 100644 --- a/arch/arm/cpu/armv8/fwcall.c +++ b/arch/arm/cpu/armv8/fwcall.c @@ -17,7 +17,7 @@ * x0~x7: input arguments * x0~x3: output arguments */ -void hvc_call(struct pt_regs *args) +static void hvc_call(struct pt_regs *args) { asm volatile( "ldr x0, %0\n" @@ -75,13 +75,21 @@ void smc_call(struct pt_regs *args) "x16", "x17"); } -void __noreturn psci_system_reset(bool conduit_smc) +/* + * For now, all systems we support run at least in EL2 and thus + * trigger PSCI calls to EL3 using SMC. If anyone ever wants to + * use PSCI on U-Boot running below a hypervisor, please detect + * this and set the flag accordingly. + */ +static const bool use_smc_for_psci = true; + +void __noreturn psci_system_reset(void) { struct pt_regs regs; regs.regs[0] = ARM_PSCI_0_2_FN_SYSTEM_RESET; - if (conduit_smc) + if (use_smc_for_psci) smc_call(®s); else hvc_call(®s); |