[Minios-devel] [UNIKRAFT PATCHv4 38/43] plat/kvm: Implement shutdown for Arm64

[Wei Chen <Wei.Chen@xxxxxxx>]

QEMU/KVM provide a PSCI interface for virtual machine on
Arm64 platform. So we use this interface to implement
platform system off function.

Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
---
 plat/kvm/shutdown.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/plat/kvm/shutdown.c b/plat/kvm/shutdown.c
index a513df9..0f0a01f 100644
--- a/plat/kvm/shutdown.c
+++ b/plat/kvm/shutdown.c
@@ -22,7 +22,8 @@
  */
 
 #include <errno.h>
-#include <x86/cpu.h>
+#include <cpu.h>
+#include <irq.h>
 #include <uk/print.h>
 #include <uk/plat/bootstrap.h>
 
@@ -38,7 +39,11 @@ void ukplat_terminate(enum ukplat_gstate request __unused)
         * be 83 ('S', 41 << 1 | 1).
         */
        uk_printk("Unikraft halted\n");
+#if defined(__X86_64__)
        outw(0x501, 41);
+#elif defined(__ARM_64__)
+       system_off();
+#endif
 
        /*
         * If we got here, there is no way to initiate "shutdown" on virtio
@@ -49,7 +54,9 @@ void ukplat_terminate(enum ukplat_gstate request __unused)
 
 static void cpu_halt(void)
 {
-       __asm__ __volatile__("cli; hlt");
+       local_irq_disable();
+       halt();
+
        for (;;)
                ;
 }
-- 
2.17.1


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