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/*
* VMApple Configuration Region
*
* Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "hw/vmapple/vmapple.h"
#include "hw/sysbus.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "qapi/error.h"
#include "net/net.h"
OBJECT_DECLARE_SIMPLE_TYPE(VMAppleCfgState, VMAPPLE_CFG)
#define VMAPPLE_CFG_SIZE 0x00010000
typedef struct VMAppleCfg {
uint32_t version; /* 0x000 */
uint32_t nr_cpus; /* 0x004 */
uint32_t unk1; /* 0x008 */
uint32_t unk2; /* 0x00c */
uint32_t unk3; /* 0x010 */
uint32_t unk4; /* 0x014 */
uint64_t ecid; /* 0x018 */
uint64_t ram_size; /* 0x020 */
uint32_t run_installer1; /* 0x028 */
uint32_t unk5; /* 0x02c */
uint32_t unk6; /* 0x030 */
uint32_t run_installer2; /* 0x034 */
uint32_t rnd; /* 0x038 */
uint32_t unk7; /* 0x03c */
MACAddr mac_en0; /* 0x040 */
uint8_t pad1[2];
MACAddr mac_en1; /* 0x048 */
uint8_t pad2[2];
MACAddr mac_wifi0; /* 0x050 */
uint8_t pad3[2];
MACAddr mac_bt0; /* 0x058 */
uint8_t pad4[2];
uint8_t reserved[0xa0]; /* 0x060 */
uint32_t cpu_ids[0x80]; /* 0x100 */
uint8_t scratch[0x200]; /* 0x180 */
char serial[32]; /* 0x380 */
char unk8[32]; /* 0x3a0 */
char model[32]; /* 0x3c0 */
uint8_t unk9[32]; /* 0x3e0 */
uint32_t unk10; /* 0x400 */
char soc_name[32]; /* 0x404 */
} VMAppleCfg;
struct VMAppleCfgState {
SysBusDevice parent_obj;
VMAppleCfg cfg;
MemoryRegion mem;
char *serial;
char *model;
char *soc_name;
};
static void vmapple_cfg_reset(Object *obj, ResetType type)
{
VMAppleCfgState *s = VMAPPLE_CFG(obj);
VMAppleCfg *cfg;
cfg = memory_region_get_ram_ptr(&s->mem);
memset(cfg, 0, VMAPPLE_CFG_SIZE);
*cfg = s->cfg;
}
static bool set_fixlen_property_or_error(char *restrict dst,
const char *restrict src,
size_t dst_size, Error **errp,
const char *property_name)
{
ERRP_GUARD();
size_t len;
len = g_strlcpy(dst, src, dst_size);
if (len < dst_size) { /* len does not count nul terminator */
return true;
}
error_setg(errp, "Provided value too long for property '%s'", property_name);
error_append_hint(errp, "length (%zu) exceeds maximum of %zu\n",
len, dst_size - 1);
return false;
}
#define set_fixlen_property_or_return(dst_array, src, errp, property_name) \
do { \
if (!set_fixlen_property_or_error((dst_array), (src), \
ARRAY_SIZE(dst_array), \
(errp), (property_name))) { \
return; \
} \
} while (0)
static void vmapple_cfg_realize(DeviceState *dev, Error **errp)
{
VMAppleCfgState *s = VMAPPLE_CFG(dev);
uint32_t i;
if (!s->serial) {
s->serial = g_strdup("1234");
}
if (!s->model) {
s->model = g_strdup("VM0001");
}
if (!s->soc_name) {
s->soc_name = g_strdup("Apple M1 (Virtual)");
}
set_fixlen_property_or_return(s->cfg.serial, s->serial, errp, "serial");
set_fixlen_property_or_return(s->cfg.model, s->model, errp, "model");
set_fixlen_property_or_return(s->cfg.soc_name, s->soc_name, errp, "soc_name");
set_fixlen_property_or_return(s->cfg.unk8, "D/A", errp, "unk8");
s->cfg.version = 2;
s->cfg.unk1 = 1;
s->cfg.unk2 = 1;
s->cfg.unk3 = 0x20;
s->cfg.unk4 = 0;
s->cfg.unk5 = 1;
s->cfg.unk6 = 1;
s->cfg.unk7 = 0;
s->cfg.unk10 = 1;
if (s->cfg.nr_cpus > ARRAY_SIZE(s->cfg.cpu_ids)) {
error_setg(errp,
"Failed to create %u CPUs, vmapple machine supports %zu max",
s->cfg.nr_cpus, ARRAY_SIZE(s->cfg.cpu_ids));
return;
}
for (i = 0; i < s->cfg.nr_cpus; i++) {
s->cfg.cpu_ids[i] = i;
}
}
static void vmapple_cfg_init(Object *obj)
{
VMAppleCfgState *s = VMAPPLE_CFG(obj);
memory_region_init_ram(&s->mem, obj, "VMApple Config", VMAPPLE_CFG_SIZE,
&error_fatal);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mem);
}
static const Property vmapple_cfg_properties[] = {
DEFINE_PROP_UINT32("nr-cpus", VMAppleCfgState, cfg.nr_cpus, 1),
DEFINE_PROP_UINT64("ecid", VMAppleCfgState, cfg.ecid, 0),
DEFINE_PROP_UINT64("ram-size", VMAppleCfgState, cfg.ram_size, 0),
DEFINE_PROP_UINT32("run_installer1", VMAppleCfgState, cfg.run_installer1, 0),
DEFINE_PROP_UINT32("run_installer2", VMAppleCfgState, cfg.run_installer2, 0),
DEFINE_PROP_UINT32("rnd", VMAppleCfgState, cfg.rnd, 0),
DEFINE_PROP_MACADDR("mac-en0", VMAppleCfgState, cfg.mac_en0),
DEFINE_PROP_MACADDR("mac-en1", VMAppleCfgState, cfg.mac_en1),
DEFINE_PROP_MACADDR("mac-wifi0", VMAppleCfgState, cfg.mac_wifi0),
DEFINE_PROP_MACADDR("mac-bt0", VMAppleCfgState, cfg.mac_bt0),
DEFINE_PROP_STRING("serial", VMAppleCfgState, serial),
DEFINE_PROP_STRING("model", VMAppleCfgState, model),
DEFINE_PROP_STRING("soc_name", VMAppleCfgState, soc_name),
};
static void vmapple_cfg_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
ResettableClass *rc = RESETTABLE_CLASS(klass);
dc->realize = vmapple_cfg_realize;
dc->desc = "VMApple Configuration Region";
device_class_set_props(dc, vmapple_cfg_properties);
rc->phases.hold = vmapple_cfg_reset;
}
static const TypeInfo vmapple_cfg_info = {
.name = TYPE_VMAPPLE_CFG,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(VMAppleCfgState),
.instance_init = vmapple_cfg_init,
.class_init = vmapple_cfg_class_init,
};
static void vmapple_cfg_register_types(void)
{
type_register_static(&vmapple_cfg_info);
}
type_init(vmapple_cfg_register_types)
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