The MMIO 'test' device (TYPE_MMIO_TESTDEV) can be mapped almost
anywhere on the sysbus memory. Allow the 'none' machine to
instantiate it from the command line, such:
$ qemu-system-sh4 -M none -monitor stdio \
-device mmio-testdev,address=0x00000000 -monitor stdio
(qemu) info mtree
address-space: memory
0000000000000000-ffffffffffffffff (prio 0, i/o): system
0000000000000000-000000001fffffff (prio 0, i/o): testdev
0000000000000000-00000000000007ff (prio 0, ram): testdev-sram
0000000010000000-0000000017ffffff (prio 0, i/o): interleaver-container
0000000011608000-00000000116081ff (prio 0, i/o): interleaver-16x8
0000000013208000-00000000132083ff (prio 0, i/o): interleaver-32x8
0000000013216000-00000000132161ff (prio 0, i/o): interleaver-32x16
0000000016408000-00000000164087ff (prio 0, i/o): interleaver-64x8
0000000016416000-00000000164163ff (prio 0, i/o): interleaver-64x16
0000000016432000-00000000164321ff (prio 0, i/o): interleaver-64x32
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
---
hw/core/null-machine.c | 2 ++
hw/misc/mmio-testdev.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/hw/core/null-machine.c b/hw/core/null-machine.c
index 7e693523d7..d8be17092f 100644
--- a/hw/core/null-machine.c
+++ b/hw/core/null-machine.c
@@ -17,6 +17,7 @@
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "hw/core/cpu.h"
+#include "hw/misc/testdev.h"
static void machine_none_init(MachineState *mch)
{
@@ -55,6 +56,7 @@ static void machine_none_machine_init(MachineClass *mc)
mc->no_floppy = 1;
mc->no_cdrom = 1;
mc->no_sdcard = 1;
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_MMIO_TESTDEV);
}
DEFINE_MACHINE("none", machine_none_machine_init)
diff --git a/hw/misc/mmio-testdev.c b/hw/misc/mmio-testdev.c
index 3b7a8057b2..42eed16f2d 100644
--- a/hw/misc/mmio-testdev.c
+++ b/hw/misc/mmio-testdev.c
@@ -9,6 +9,10 @@
/*
* This device is mostly used to test QEMU internal MMIO devices.
* Accesses using CPU core are not allowed.
+ *
+ * This device is meant to be used for testing, like:
+ *
+ * qemu-system-sh4 -M none -device mmio-testdev,address=0x10000000
*/
#include "qemu/osdep.h"
--
2.26.2
