This register does not exist in hardware. It is here to allow the guest
code to cause Qemu to exit when required.
The register address chosen is unused in the emulated machines
datasheets.
Signed-off-by: Joel Stanley <j...@jms.id.au>
---
hw/misc/aspeed_scu.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c
index c8217740efc1..aa17d032ba93 100644
--- a/hw/misc/aspeed_scu.c
+++ b/hw/misc/aspeed_scu.c
@@ -16,6 +16,7 @@
#include "qapi/visitor.h"
#include "qemu/bitops.h"
#include "qemu/log.h"
+#include "sysemu/sysemu.h"
#include "crypto/random.h"
#include "trace.h"
@@ -84,6 +85,7 @@
#define SRAM_DECODE_BASE1 TO_REG(0x194)
#define SRAM_DECODE_BASE2 TO_REG(0x198)
#define BMC_REV TO_REG(0x19C)
+#define POWEROFF TO_REG(0x1A0)
#define BMC_DEV_ID TO_REG(0x1A4)
#define SCU_IO_REGION_SIZE 0x1000
@@ -264,6 +266,9 @@ static void aspeed_scu_write(void *opaque, hwaddr offset,
uint64_t data,
}
/* Avoid assignment below, we've handled everything */
return;
+ case POWEROFF:
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ break;
case FREQ_CNTR_EVAL:
case VGA_SCRATCH1 ... VGA_SCRATCH8:
case RNG_DATA:
--
2.19.1
