54d31236b9
sysemu/sysemu.h is a rather unfocused dumping ground for stuff related to the system-emulator. Evidence: * It's included widely: in my "build everything" tree, changing sysemu/sysemu.h still triggers a recompile of some 1100 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h, down from 5400 due to the previous two commits). * It pulls in more than a dozen additional headers. Split stuff related to run state management into its own header sysemu/runstate.h. Touching sysemu/sysemu.h now recompiles some 850 objects. qemu/uuid.h also drops from 1100 to 850, and qapi/qapi-types-run-state.h from 4400 to 4200. Touching new sysemu/runstate.h recompiles some 500 objects. Since I'm touching MAINTAINERS to add sysemu/runstate.h anyway, also add qemu/main-loop.h. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190812052359.30071-30-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [Unbreak OS-X build]
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
|
|
* IMX7 Secure Non-Volatile Storage
|
|
*
|
|
* Copyright (c) 2018, Impinj, Inc.
|
|
*
|
|
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
* Bare minimum emulation code needed to support being able to shut
|
|
* down linux guest gracefully.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/misc/imx7_snvs.h"
|
|
#include "qemu/log.h"
|
|
#include "qemu/module.h"
|
|
#include "sysemu/runstate.h"
|
|
|
|
static uint64_t imx7_snvs_read(void *opaque, hwaddr offset, unsigned size)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void imx7_snvs_write(void *opaque, hwaddr offset,
|
|
uint64_t v, unsigned size)
|
|
{
|
|
const uint32_t value = v;
|
|
const uint32_t mask = SNVS_LPCR_TOP | SNVS_LPCR_DP_EN;
|
|
|
|
if (offset == SNVS_LPCR && ((value & mask) == mask)) {
|
|
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
|
|
}
|
|
}
|
|
|
|
static const struct MemoryRegionOps imx7_snvs_ops = {
|
|
.read = imx7_snvs_read,
|
|
.write = imx7_snvs_write,
|
|
.endianness = DEVICE_NATIVE_ENDIAN,
|
|
.impl = {
|
|
/*
|
|
* Our device would not work correctly if the guest was doing
|
|
* unaligned access. This might not be a limitation on the real
|
|
* device but in practice there is no reason for a guest to access
|
|
* this device unaligned.
|
|
*/
|
|
.min_access_size = 4,
|
|
.max_access_size = 4,
|
|
.unaligned = false,
|
|
},
|
|
};
|
|
|
|
static void imx7_snvs_init(Object *obj)
|
|
{
|
|
SysBusDevice *sd = SYS_BUS_DEVICE(obj);
|
|
IMX7SNVSState *s = IMX7_SNVS(obj);
|
|
|
|
memory_region_init_io(&s->mmio, obj, &imx7_snvs_ops, s,
|
|
TYPE_IMX7_SNVS, 0x1000);
|
|
|
|
sysbus_init_mmio(sd, &s->mmio);
|
|
}
|
|
|
|
static void imx7_snvs_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->desc = "i.MX7 Secure Non-Volatile Storage Module";
|
|
}
|
|
|
|
static const TypeInfo imx7_snvs_info = {
|
|
.name = TYPE_IMX7_SNVS,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(IMX7SNVSState),
|
|
.instance_init = imx7_snvs_init,
|
|
.class_init = imx7_snvs_class_init,
|
|
};
|
|
|
|
static void imx7_snvs_register_type(void)
|
|
{
|
|
type_register_static(&imx7_snvs_info);
|
|
}
|
|
type_init(imx7_snvs_register_type)
|