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Merge tag 'pull-loongarch-20241016' of https://gitlab.com/gaosong/qemu into staging
[qemu/armbru.git] / hw / m68k / virt.c
blobea5c4a5a570bba1a4525c76734bbf8726b19ea11
1 /*
2 * SPDX-License-Identifier: GPL-2.0-or-later
3 *
4 * QEMU Virtual M68K Machine
5 *
6 * (c) 2020 Laurent Vivier <laurent@vivier.eu>
7 *
8 */
9
10 #include "qemu/osdep.h"
11 #include "qemu/units.h"
12 #include "qemu/guest-random.h"
13 #include "sysemu/sysemu.h"
14 #include "cpu.h"
15 #include "hw/boards.h"
16 #include "hw/qdev-properties.h"
17 #include "elf.h"
18 #include "hw/loader.h"
19 #include "ui/console.h"
20 #include "hw/sysbus.h"
21 #include "standard-headers/asm-m68k/bootinfo.h"
22 #include "standard-headers/asm-m68k/bootinfo-virt.h"
23 #include "bootinfo.h"
24 #include "net/net.h"
25 #include "qapi/error.h"
26 #include "qemu/error-report.h"
27 #include "sysemu/qtest.h"
28 #include "sysemu/runstate.h"
29 #include "sysemu/reset.h"
30
31 #include "hw/intc/m68k_irqc.h"
32 #include "hw/misc/virt_ctrl.h"
33 #include "hw/char/goldfish_tty.h"
34 #include "hw/rtc/goldfish_rtc.h"
35 #include "hw/intc/goldfish_pic.h"
36 #include "hw/virtio/virtio-mmio.h"
37 #include "hw/virtio/virtio-blk.h"
38
39 /*
40 * 6 goldfish-pic for CPU IRQ #1 to IRQ #6
41 * CPU IRQ #1 -> PIC #1
42 * IRQ #1 to IRQ #31 -> unused
43 * IRQ #32 -> goldfish-tty
44 * CPU IRQ #2 -> PIC #2
45 * IRQ #1 to IRQ #32 -> virtio-mmio from 1 to 32
46 * CPU IRQ #3 -> PIC #3
47 * IRQ #1 to IRQ #32 -> virtio-mmio from 33 to 64
48 * CPU IRQ #4 -> PIC #4
49 * IRQ #1 to IRQ #32 -> virtio-mmio from 65 to 96
50 * CPU IRQ #5 -> PIC #5
51 * IRQ #1 to IRQ #32 -> virtio-mmio from 97 to 128
52 * CPU IRQ #6 -> PIC #6
53 * IRQ #1 -> goldfish-rtc
54 * IRQ #2 to IRQ #32 -> unused
55 * CPU IRQ #7 -> NMI
56 */
57
58 #define PIC_IRQ_BASE(num) (8 + (num - 1) * 32)
59 #define PIC_IRQ(num, irq) (PIC_IRQ_BASE(num) + irq - 1)
60 #define PIC_GPIO(pic_irq) (qdev_get_gpio_in(pic_dev[(pic_irq - 8) / 32], \
61 (pic_irq - 8) % 32))
62
63 #define VIRT_GF_PIC_MMIO_BASE 0xff000000 /* MMIO: 0xff000000 - 0xff005fff */
64 #define VIRT_GF_PIC_IRQ_BASE 1 /* IRQ: #1 -> #6 */
65 #define VIRT_GF_PIC_NB 6
66
67 /* 2 goldfish-rtc (and timer) */
68 #define VIRT_GF_RTC_MMIO_BASE 0xff006000 /* MMIO: 0xff006000 - 0xff007fff */
69 #define VIRT_GF_RTC_IRQ_BASE PIC_IRQ(6, 1) /* PIC: #6, IRQ: #1 */
70 #define VIRT_GF_RTC_NB 2
71
72 /* 1 goldfish-tty */
73 #define VIRT_GF_TTY_MMIO_BASE 0xff008000 /* MMIO: 0xff008000 - 0xff008fff */
74 #define VIRT_GF_TTY_IRQ_BASE PIC_IRQ(1, 32) /* PIC: #1, IRQ: #32 */
75
76 /* 1 virt-ctrl */
77 #define VIRT_CTRL_MMIO_BASE 0xff009000 /* MMIO: 0xff009000 - 0xff009fff */
78 #define VIRT_CTRL_IRQ_BASE PIC_IRQ(1, 1) /* PIC: #1, IRQ: #1 */
79
80 /*
81 * virtio-mmio size is 0x200 bytes
82 * we use 4 goldfish-pic to attach them,
83 * we can attach 32 virtio devices / goldfish-pic
84 * -> we can manage 32 * 4 = 128 virtio devices
85 */
86 #define VIRT_VIRTIO_MMIO_BASE 0xff010000 /* MMIO: 0xff010000 - 0xff01ffff */
87 #define VIRT_VIRTIO_IRQ_BASE PIC_IRQ(2, 1) /* PIC: 2, 3, 4, 5, IRQ: ALL */
88
89 typedef struct {
90 M68kCPU *cpu;
91 hwaddr initial_pc;
92 hwaddr initial_stack;
93 } ResetInfo;
94
95 static void main_cpu_reset(void *opaque)
96 {
97 ResetInfo *reset_info = opaque;
98 M68kCPU *cpu = reset_info->cpu;
99 CPUState *cs = CPU(cpu);
100
101 cpu_reset(cs);
102 cpu->env.aregs[7] = reset_info->initial_stack;
103 cpu->env.pc = reset_info->initial_pc;
104 }
105
106 static void rerandomize_rng_seed(void *opaque)
107 {
108 struct bi_record *rng_seed = opaque;
109 qemu_guest_getrandom_nofail((void *)rng_seed->data + 2,
110 be16_to_cpu(*(uint16_t *)rng_seed->data));
111 }
112
113 static void virt_init(MachineState *machine)
114 {
115 M68kCPU *cpu = NULL;
116 int32_t kernel_size;
117 uint64_t elf_entry;
118 ram_addr_t initrd_base;
119 int32_t initrd_size;
120 ram_addr_t ram_size = machine->ram_size;
121 const char *kernel_filename = machine->kernel_filename;
122 const char *initrd_filename = machine->initrd_filename;
123 const char *kernel_cmdline = machine->kernel_cmdline;
124 hwaddr parameters_base;
125 DeviceState *dev;
126 DeviceState *irqc_dev;
127 DeviceState *pic_dev[VIRT_GF_PIC_NB];
128 SysBusDevice *sysbus;
129 hwaddr io_base;
130 int i;
131 ResetInfo *reset_info;
132 uint8_t rng_seed[32];
133
134 if (ram_size > 3399672 * KiB) {
135 /*
136 * The physical memory can be up to 4 GiB - 16 MiB, but linux
137 * kernel crashes after this limit (~ 3.2 GiB)
138 */
139 error_report("Too much memory for this machine: %" PRId64 " KiB, "
140 "maximum 3399672 KiB", ram_size / KiB);
141 exit(1);
142 }
143
144 reset_info = g_new0(ResetInfo, 1);
145
146 /* init CPUs */
147 cpu = M68K_CPU(cpu_create(machine->cpu_type));
148
149 reset_info->cpu = cpu;
150 qemu_register_reset(main_cpu_reset, reset_info);
151
152 /* RAM */
153 memory_region_add_subregion(get_system_memory(), 0, machine->ram);
154
155 /* IRQ Controller */
156
157 irqc_dev = qdev_new(TYPE_M68K_IRQC);
158 object_property_set_link(OBJECT(irqc_dev), "m68k-cpu",
159 OBJECT(cpu), &error_abort);
160 sysbus_realize_and_unref(SYS_BUS_DEVICE(irqc_dev), &error_fatal);
161
162 /*
163 * 6 goldfish-pic
164 *
165 * map: 0xff000000 - 0xff006fff = 28 KiB
166 * IRQ: #1 (lower priority) -> #6 (higher priority)
167 *
168 */
169 io_base = VIRT_GF_PIC_MMIO_BASE;
170 for (i = 0; i < VIRT_GF_PIC_NB; i++) {
171 pic_dev[i] = qdev_new(TYPE_GOLDFISH_PIC);
172 sysbus = SYS_BUS_DEVICE(pic_dev[i]);
173 qdev_prop_set_uint8(pic_dev[i], "index", i);
174 sysbus_realize_and_unref(sysbus, &error_fatal);
175
176 sysbus_mmio_map(sysbus, 0, io_base);
177 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(irqc_dev, i));
178
179 io_base += 0x1000;
180 }
181
182 /* goldfish-rtc */
183 io_base = VIRT_GF_RTC_MMIO_BASE;
184 for (i = 0; i < VIRT_GF_RTC_NB; i++) {
185 dev = qdev_new(TYPE_GOLDFISH_RTC);
186 qdev_prop_set_bit(dev, "big-endian", true);
187 sysbus = SYS_BUS_DEVICE(dev);
188 sysbus_realize_and_unref(sysbus, &error_fatal);
189 sysbus_mmio_map(sysbus, 0, io_base);
190 sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_RTC_IRQ_BASE + i));
191
192 io_base += 0x1000;
193 }
194
195 /* goldfish-tty */
196 dev = qdev_new(TYPE_GOLDFISH_TTY);
197 sysbus = SYS_BUS_DEVICE(dev);
198 qdev_prop_set_chr(dev, "chardev", serial_hd(0));
199 sysbus_realize_and_unref(sysbus, &error_fatal);
200 sysbus_mmio_map(sysbus, 0, VIRT_GF_TTY_MMIO_BASE);
201 sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_TTY_IRQ_BASE));
202
203 /* virt controller */
204 dev = sysbus_create_simple(TYPE_VIRT_CTRL, VIRT_CTRL_MMIO_BASE,
205 PIC_GPIO(VIRT_CTRL_IRQ_BASE));
206
207 /* virtio-mmio */
208 io_base = VIRT_VIRTIO_MMIO_BASE;
209 for (i = 0; i < 128; i++) {
210 dev = qdev_new(TYPE_VIRTIO_MMIO);
211 qdev_prop_set_bit(dev, "force-legacy", false);
212 sysbus = SYS_BUS_DEVICE(dev);
213 sysbus_realize_and_unref(sysbus, &error_fatal);
214 sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_VIRTIO_IRQ_BASE + i));
215 sysbus_mmio_map(sysbus, 0, io_base);
216 io_base += 0x200;
217 }
218
219 if (kernel_filename) {
220 CPUState *cs = CPU(cpu);
221 uint64_t high;
222 void *param_blob, *param_ptr, *param_rng_seed;
223
224 if (kernel_cmdline) {
225 param_blob = g_malloc(strlen(kernel_cmdline) + 1024);
226 } else {
227 param_blob = g_malloc(1024);
228 }
229
230 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
231 &elf_entry, NULL, &high, NULL, 1,
232 EM_68K, 0, 0);
233 if (kernel_size < 0) {
234 error_report("could not load kernel '%s'", kernel_filename);
235 exit(1);
236 }
237 reset_info->initial_pc = elf_entry;
238 parameters_base = (high + 1) & ~1;
239 param_ptr = param_blob;
240
241 BOOTINFO1(param_ptr, BI_MACHTYPE, MACH_VIRT);
242 if (m68k_feature(&cpu->env, M68K_FEATURE_M68020)) {
243 BOOTINFO1(param_ptr, BI_CPUTYPE, CPU_68020);
244 } else if (m68k_feature(&cpu->env, M68K_FEATURE_M68030)) {
245 BOOTINFO1(param_ptr, BI_MMUTYPE, MMU_68030);
246 BOOTINFO1(param_ptr, BI_CPUTYPE, CPU_68030);
247 } else if (m68k_feature(&cpu->env, M68K_FEATURE_M68040)) {
248 BOOTINFO1(param_ptr, BI_FPUTYPE, FPU_68040);
249 BOOTINFO1(param_ptr, BI_MMUTYPE, MMU_68040);
250 BOOTINFO1(param_ptr, BI_CPUTYPE, CPU_68040);
251 } else if (m68k_feature(&cpu->env, M68K_FEATURE_M68060)) {
252 BOOTINFO1(param_ptr, BI_FPUTYPE, FPU_68060);
253 BOOTINFO1(param_ptr, BI_MMUTYPE, MMU_68060);
254 BOOTINFO1(param_ptr, BI_CPUTYPE, CPU_68060);
255 }
256 BOOTINFO2(param_ptr, BI_MEMCHUNK, 0, ram_size);
257
258 BOOTINFO1(param_ptr, BI_VIRT_QEMU_VERSION,
259 ((QEMU_VERSION_MAJOR << 24) | (QEMU_VERSION_MINOR << 16) |
260 (QEMU_VERSION_MICRO << 8)));
261 BOOTINFO2(param_ptr, BI_VIRT_GF_PIC_BASE,
262 VIRT_GF_PIC_MMIO_BASE, VIRT_GF_PIC_IRQ_BASE);
263 BOOTINFO2(param_ptr, BI_VIRT_GF_RTC_BASE,
264 VIRT_GF_RTC_MMIO_BASE, VIRT_GF_RTC_IRQ_BASE);
265 BOOTINFO2(param_ptr, BI_VIRT_GF_TTY_BASE,
266 VIRT_GF_TTY_MMIO_BASE, VIRT_GF_TTY_IRQ_BASE);
267 BOOTINFO2(param_ptr, BI_VIRT_CTRL_BASE,
268 VIRT_CTRL_MMIO_BASE, VIRT_CTRL_IRQ_BASE);
269 BOOTINFO2(param_ptr, BI_VIRT_VIRTIO_BASE,
270 VIRT_VIRTIO_MMIO_BASE, VIRT_VIRTIO_IRQ_BASE);
271
272 if (kernel_cmdline) {
273 BOOTINFOSTR(param_ptr, BI_COMMAND_LINE,
274 kernel_cmdline);
275 }
276
277 /* Pass seed to RNG. */
278 param_rng_seed = param_ptr;
279 qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed));
280 BOOTINFODATA(param_ptr, BI_RNG_SEED,
281 rng_seed, sizeof(rng_seed));
282
283 /* load initrd */
284 if (initrd_filename) {
285 initrd_size = get_image_size(initrd_filename);
286 if (initrd_size < 0) {
287 error_report("could not load initial ram disk '%s'",
288 initrd_filename);
289 exit(1);
290 }
291
292 initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK;
293 load_image_targphys(initrd_filename, initrd_base,
294 ram_size - initrd_base);
295 BOOTINFO2(param_ptr, BI_RAMDISK, initrd_base,
296 initrd_size);
297 } else {
298 initrd_base = 0;
299 initrd_size = 0;
300 }
301 BOOTINFO0(param_ptr, BI_LAST);
302 rom_add_blob_fixed_as("bootinfo", param_blob, param_ptr - param_blob,
303 parameters_base, cs->as);
304 qemu_register_reset_nosnapshotload(rerandomize_rng_seed,
305 rom_ptr_for_as(cs->as, parameters_base,
306 param_ptr - param_blob) +
307 (param_rng_seed - param_blob));
308 g_free(param_blob);
309 }
310 }
311
312 static void virt_machine_class_init(ObjectClass *oc, void *data)
313 {
314 MachineClass *mc = MACHINE_CLASS(oc);
315 mc->desc = "QEMU M68K Virtual Machine";
316 mc->init = virt_init;
317 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
318 mc->max_cpus = 1;
319 mc->no_floppy = 1;
320 mc->no_parallel = 1;
321 mc->default_ram_id = "m68k_virt.ram";
322 }
323
324 static const TypeInfo virt_machine_info = {
325 .name = MACHINE_TYPE_NAME("virt"),
326 .parent = TYPE_MACHINE,
327 .abstract = true,
328 .class_init = virt_machine_class_init,
329 };
330
331 static void virt_machine_register_types(void)
332 {
333 type_register_static(&virt_machine_info);
334 }
335
336 type_init(virt_machine_register_types)
337
338 #define DEFINE_VIRT_MACHINE_IMPL(latest, ...) \
339 static void MACHINE_VER_SYM(class_init, virt, __VA_ARGS__)( \
340 ObjectClass *oc, \
341 void *data) \
342 { \
343 MachineClass *mc = MACHINE_CLASS(oc); \
344 MACHINE_VER_SYM(options, virt, __VA_ARGS__)(mc); \
345 mc->desc = "QEMU " MACHINE_VER_STR(__VA_ARGS__) " M68K Virtual Machine"; \
346 MACHINE_VER_DEPRECATION(__VA_ARGS__); \
347 if (latest) { \
348 mc->alias = "virt"; \
349 } \
350 } \
351 static const TypeInfo MACHINE_VER_SYM(info, virt, __VA_ARGS__) = \
352 { \
353 .name = MACHINE_VER_TYPE_NAME("virt", __VA_ARGS__), \
354 .parent = MACHINE_TYPE_NAME("virt"), \
355 .class_init = MACHINE_VER_SYM(class_init, virt, __VA_ARGS__), \
356 }; \
357 static void MACHINE_VER_SYM(register, virt, __VA_ARGS__)(void) \
358 { \
359 MACHINE_VER_DELETION(__VA_ARGS__); \
360 type_register_static(&MACHINE_VER_SYM(info, virt, __VA_ARGS__)); \
361 } \
362 type_init(MACHINE_VER_SYM(register, virt, __VA_ARGS__));
363
364 #define DEFINE_VIRT_MACHINE_AS_LATEST(major, minor) \
365 DEFINE_VIRT_MACHINE_IMPL(true, major, minor)
366 #define DEFINE_VIRT_MACHINE(major, minor) \
367 DEFINE_VIRT_MACHINE_IMPL(false, major, minor)
368
369 static void virt_machine_9_2_options(MachineClass *mc)
370 {
371 }
372 DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
373
374 static void virt_machine_9_1_options(MachineClass *mc)
375 {
376 virt_machine_9_2_options(mc);
377 compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
378 }
379 DEFINE_VIRT_MACHINE(9, 1)
380
381 static void virt_machine_9_0_options(MachineClass *mc)
382 {
383 virt_machine_9_1_options(mc);
384 compat_props_add(mc->compat_props, hw_compat_9_0, hw_compat_9_0_len);
385 }
386 DEFINE_VIRT_MACHINE(9, 0)
387
388 static void virt_machine_8_2_options(MachineClass *mc)
389 {
390 virt_machine_9_0_options(mc);
391 compat_props_add(mc->compat_props, hw_compat_8_2, hw_compat_8_2_len);
392 }
393 DEFINE_VIRT_MACHINE(8, 2)
394
395 static void virt_machine_8_1_options(MachineClass *mc)
396 {
397 virt_machine_8_2_options(mc);
398 compat_props_add(mc->compat_props, hw_compat_8_1, hw_compat_8_1_len);
399 }
400 DEFINE_VIRT_MACHINE(8, 1)
401
402 static void virt_machine_8_0_options(MachineClass *mc)
403 {
404 virt_machine_8_1_options(mc);
405 compat_props_add(mc->compat_props, hw_compat_8_0, hw_compat_8_0_len);
406 }
407 DEFINE_VIRT_MACHINE(8, 0)
408
409 static void virt_machine_7_2_options(MachineClass *mc)
410 {
411 virt_machine_8_0_options(mc);
412 compat_props_add(mc->compat_props, hw_compat_7_2, hw_compat_7_2_len);
413 }
414 DEFINE_VIRT_MACHINE(7, 2)
415
416 static void virt_machine_7_1_options(MachineClass *mc)
417 {
418 virt_machine_7_2_options(mc);
419 compat_props_add(mc->compat_props, hw_compat_7_1, hw_compat_7_1_len);
420 }
421 DEFINE_VIRT_MACHINE(7, 1)
422
423 static void virt_machine_7_0_options(MachineClass *mc)
424 {
425 virt_machine_7_1_options(mc);
426 compat_props_add(mc->compat_props, hw_compat_7_0, hw_compat_7_0_len);
427 }
428 DEFINE_VIRT_MACHINE(7, 0)
429
430 static void virt_machine_6_2_options(MachineClass *mc)
431 {
432 virt_machine_7_0_options(mc);
433 compat_props_add(mc->compat_props, hw_compat_6_2, hw_compat_6_2_len);
434 }
435 DEFINE_VIRT_MACHINE(6, 2)
436
437 static void virt_machine_6_1_options(MachineClass *mc)
438 {
439 virt_machine_6_2_options(mc);
440 compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len);
441 }
442 DEFINE_VIRT_MACHINE(6, 1)
443
444 static void virt_machine_6_0_options(MachineClass *mc)
445 {
446 virt_machine_6_1_options(mc);
447 compat_props_add(mc->compat_props, hw_compat_6_0, hw_compat_6_0_len);
448 }
449 DEFINE_VIRT_MACHINE(6, 0)
armbru's QEMU hackery