1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
|
/*
* SPDX-License-Identifer: GPL-2.0-or-later
*
* QEMU Vitual M68K Machine
*
* (c) 2020 Laurent Vivier <laurent@vivier.eu>
*
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu-common.h"
#include "sysemu/sysemu.h"
#include "cpu.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "elf.h"
#include "hw/loader.h"
#include "ui/console.h"
#include "exec/address-spaces.h"
#include "hw/sysbus.h"
#include "standard-headers/asm-m68k/bootinfo.h"
#include "standard-headers/asm-m68k/bootinfo-virt.h"
#include "bootinfo.h"
#include "net/net.h"
#include "qapi/error.h"
#include "sysemu/qtest.h"
#include "sysemu/runstate.h"
#include "sysemu/reset.h"
#include "hw/intc/m68k_irqc.h"
#include "hw/misc/virt_ctrl.h"
#include "hw/char/goldfish_tty.h"
#include "hw/rtc/goldfish_rtc.h"
#include "hw/intc/goldfish_pic.h"
#include "hw/virtio/virtio-mmio.h"
#include "hw/virtio/virtio-blk.h"
/*
* 6 goldfish-pic for CPU IRQ #1 to IRQ #6
* CPU IRQ #1 -> PIC #1
* IRQ #1 to IRQ #31 -> unused
* IRQ #32 -> goldfish-tty
* CPU IRQ #2 -> PIC #2
* IRQ #1 to IRQ #32 -> virtio-mmio from 1 to 32
* CPU IRQ #3 -> PIC #3
* IRQ #1 to IRQ #32 -> virtio-mmio from 33 to 64
* CPU IRQ #4 -> PIC #4
* IRQ #1 to IRQ #32 -> virtio-mmio from 65 to 96
* CPU IRQ #5 -> PIC #5
* IRQ #1 to IRQ #32 -> virtio-mmio from 97 to 128
* CPU IRQ #6 -> PIC #6
* IRQ #1 -> goldfish-rtc
* IRQ #2 to IRQ #32 -> unused
* CPU IRQ #7 -> NMI
*/
#define PIC_IRQ_BASE(num) (8 + (num - 1) * 32)
#define PIC_IRQ(num, irq) (PIC_IRQ_BASE(num) + irq - 1)
#define PIC_GPIO(pic_irq) (qdev_get_gpio_in(pic_dev[(pic_irq - 8) / 32], \
(pic_irq - 8) % 32))
#define VIRT_GF_PIC_MMIO_BASE 0xff000000 /* MMIO: 0xff000000 - 0xff005fff */
#define VIRT_GF_PIC_IRQ_BASE 1 /* IRQ: #1 -> #6 */
#define VIRT_GF_PIC_NB 6
/* 2 goldfish-rtc (and timer) */
#define VIRT_GF_RTC_MMIO_BASE 0xff006000 /* MMIO: 0xff006000 - 0xff007fff */
#define VIRT_GF_RTC_IRQ_BASE PIC_IRQ(6, 1) /* PIC: #6, IRQ: #1 */
#define VIRT_GF_RTC_NB 2
/* 1 goldfish-tty */
#define VIRT_GF_TTY_MMIO_BASE 0xff008000 /* MMIO: 0xff008000 - 0xff008fff */
#define VIRT_GF_TTY_IRQ_BASE PIC_IRQ(1, 32) /* PIC: #1, IRQ: #32 */
/* 1 virt-ctrl */
#define VIRT_CTRL_MMIO_BASE 0xff009000 /* MMIO: 0xff009000 - 0xff009fff */
#define VIRT_CTRL_IRQ_BASE PIC_IRQ(1, 1) /* PIC: #1, IRQ: #1 */
/*
* virtio-mmio size is 0x200 bytes
* we use 4 goldfish-pic to attach them,
* we can attach 32 virtio devices / goldfish-pic
* -> we can manage 32 * 4 = 128 virtio devices
*/
#define VIRT_VIRTIO_MMIO_BASE 0xff010000 /* MMIO: 0xff010000 - 0xff01ffff */
#define VIRT_VIRTIO_IRQ_BASE PIC_IRQ(2, 1) /* PIC: 2, 3, 4, 5, IRQ: ALL */
static void main_cpu_reset(void *opaque)
{
M68kCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
cpu_reset(cs);
cpu->env.aregs[7] = ldl_phys(cs->as, 0);
cpu->env.pc = ldl_phys(cs->as, 4);
}
static void virt_init(MachineState *machine)
{
M68kCPU *cpu = NULL;
int32_t kernel_size;
uint64_t elf_entry;
ram_addr_t initrd_base;
int32_t initrd_size;
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
const char *initrd_filename = machine->initrd_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
hwaddr parameters_base;
DeviceState *dev;
DeviceState *irqc_dev;
DeviceState *pic_dev[VIRT_GF_PIC_NB];
SysBusDevice *sysbus;
hwaddr io_base;
int i;
if (ram_size > 3399672 * KiB) {
/*
* The physical memory can be up to 4 GiB - 16 MiB, but linux
* kernel crashes after this limit (~ 3.2 GiB)
*/
error_report("Too much memory for this machine: %" PRId64 " KiB, "
"maximum 3399672 KiB", ram_size / KiB);
exit(1);
}
/* init CPUs */
cpu = M68K_CPU(cpu_create(machine->cpu_type));
qemu_register_reset(main_cpu_reset, cpu);
/* RAM */
memory_region_add_subregion(get_system_memory(), 0, machine->ram);
/* IRQ Controller */
irqc_dev = qdev_new(TYPE_M68K_IRQC);
sysbus_realize_and_unref(SYS_BUS_DEVICE(irqc_dev), &error_fatal);
/*
* 6 goldfish-pic
*
* map: 0xff000000 - 0xff006fff = 28 KiB
* IRQ: #1 (lower priority) -> #6 (higher priority)
*
*/
io_base = VIRT_GF_PIC_MMIO_BASE;
for (i = 0; i < VIRT_GF_PIC_NB; i++) {
pic_dev[i] = qdev_new(TYPE_GOLDFISH_PIC);
sysbus = SYS_BUS_DEVICE(pic_dev[i]);
qdev_prop_set_uint8(pic_dev[i], "index", i);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, io_base);
sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(irqc_dev, i));
io_base += 0x1000;
}
/* goldfish-rtc */
io_base = VIRT_GF_RTC_MMIO_BASE;
for (i = 0; i < VIRT_GF_RTC_NB; i++) {
dev = qdev_new(TYPE_GOLDFISH_RTC);
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, io_base);
sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_RTC_IRQ_BASE + i));
io_base += 0x1000;
}
/* goldfish-tty */
dev = qdev_new(TYPE_GOLDFISH_TTY);
sysbus = SYS_BUS_DEVICE(dev);
qdev_prop_set_chr(dev, "chardev", serial_hd(0));
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, VIRT_GF_TTY_MMIO_BASE);
sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_TTY_IRQ_BASE));
/* virt controller */
dev = qdev_new(TYPE_VIRT_CTRL);
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_mmio_map(sysbus, 0, VIRT_CTRL_MMIO_BASE);
sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_CTRL_IRQ_BASE));
/* virtio-mmio */
io_base = VIRT_VIRTIO_MMIO_BASE;
for (i = 0; i < 128; i++) {
dev = qdev_new(TYPE_VIRTIO_MMIO);
qdev_prop_set_bit(dev, "force-legacy", false);
sysbus = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(sysbus, &error_fatal);
sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_VIRTIO_IRQ_BASE + i));
sysbus_mmio_map(sysbus, 0, io_base);
io_base += 0x200;
}
if (kernel_filename) {
CPUState *cs = CPU(cpu);
uint64_t high;
kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
&elf_entry, NULL, &high, NULL, 1,
EM_68K, 0, 0);
if (kernel_size < 0) {
error_report("could not load kernel '%s'", kernel_filename);
exit(1);
}
stl_phys(cs->as, 4, elf_entry); /* reset initial PC */
parameters_base = (high + 1) & ~1;
BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_VIRT);
BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, FPU_68040);
BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, MMU_68040);
BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, CPU_68040);
BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size);
BOOTINFO1(cs->as, parameters_base, BI_VIRT_QEMU_VERSION,
((QEMU_VERSION_MAJOR << 24) | (QEMU_VERSION_MINOR << 16) |
(QEMU_VERSION_MICRO << 8)));
BOOTINFO2(cs->as, parameters_base, BI_VIRT_GF_PIC_BASE,
VIRT_GF_PIC_MMIO_BASE, VIRT_GF_PIC_IRQ_BASE);
BOOTINFO2(cs->as, parameters_base, BI_VIRT_GF_RTC_BASE,
VIRT_GF_RTC_MMIO_BASE, VIRT_GF_RTC_IRQ_BASE);
BOOTINFO2(cs->as, parameters_base, BI_VIRT_GF_TTY_BASE,
VIRT_GF_TTY_MMIO_BASE, VIRT_GF_TTY_IRQ_BASE);
BOOTINFO2(cs->as, parameters_base, BI_VIRT_CTRL_BASE,
VIRT_CTRL_MMIO_BASE, VIRT_CTRL_IRQ_BASE);
BOOTINFO2(cs->as, parameters_base, BI_VIRT_VIRTIO_BASE,
VIRT_VIRTIO_MMIO_BASE, VIRT_VIRTIO_IRQ_BASE);
if (kernel_cmdline) {
BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE,
kernel_cmdline);
}
/* load initrd */
if (initrd_filename) {
initrd_size = get_image_size(initrd_filename);
if (initrd_size < 0) {
error_report("could not load initial ram disk '%s'",
initrd_filename);
exit(1);
}
initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK;
load_image_targphys(initrd_filename, initrd_base,
ram_size - initrd_base);
BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base,
initrd_size);
} else {
initrd_base = 0;
initrd_size = 0;
}
BOOTINFO0(cs->as, parameters_base, BI_LAST);
}
}
static void virt_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "QEMU M68K Virtual Machine";
mc->init = virt_init;
mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
mc->max_cpus = 1;
mc->no_floppy = 1;
mc->no_parallel = 1;
mc->default_ram_id = "m68k_virt.ram";
}
static const TypeInfo virt_machine_info = {
.name = MACHINE_TYPE_NAME("virt"),
.parent = TYPE_MACHINE,
.abstract = true,
.class_init = virt_machine_class_init,
};
static void virt_machine_register_types(void)
{
type_register_static(&virt_machine_info);
}
type_init(virt_machine_register_types)
#define DEFINE_VIRT_MACHINE(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
void *data) \
{ \
MachineClass *mc = MACHINE_CLASS(oc); \
virt_machine_##major##_##minor##_options(mc); \
mc->desc = "QEMU " # major "." # minor " M68K Virtual Machine"; \
if (latest) { \
mc->alias = "virt"; \
} \
} \
static const TypeInfo machvirt_##major##_##minor##_info = { \
.name = MACHINE_TYPE_NAME("virt-" # major "." # minor), \
.parent = MACHINE_TYPE_NAME("virt"), \
.class_init = virt_##major##_##minor##_class_init, \
}; \
static void machvirt_machine_##major##_##minor##_init(void) \
{ \
type_register_static(&machvirt_##major##_##minor##_info); \
} \
type_init(machvirt_machine_##major##_##minor##_init);
static void virt_machine_6_0_options(MachineClass *mc)
{
}
DEFINE_VIRT_MACHINE(6, 0, true)
|
