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1 /*
2 * QEMU Motorla 680x0 Macintosh hardware System Emulator
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
21 */
22
23 #include "qemu/osdep.h"
24 #include "qemu/units.h"
25 #include "qemu-common.h"
26 #include "qemu/datadir.h"
27 #include "sysemu/sysemu.h"
28 #include "cpu.h"
29 #include "hw/boards.h"
30 #include "hw/or-irq.h"
31 #include "elf.h"
32 #include "hw/loader.h"
33 #include "ui/console.h"
34 #include "hw/char/escc.h"
35 #include "hw/sysbus.h"
36 #include "hw/scsi/esp.h"
37 #include "standard-headers/asm-m68k/bootinfo.h"
38 #include "standard-headers/asm-m68k/bootinfo-mac.h"
39 #include "bootinfo.h"
40 #include "hw/misc/mac_via.h"
41 #include "hw/input/adb.h"
42 #include "hw/nubus/mac-nubus-bridge.h"
43 #include "hw/display/macfb.h"
44 #include "hw/block/swim.h"
45 #include "net/net.h"
46 #include "qapi/error.h"
47 #include "sysemu/qtest.h"
48 #include "sysemu/runstate.h"
49 #include "sysemu/reset.h"
50 #include "migration/vmstate.h"
51
52 #define MACROM_ADDR 0x40800000
53 #define MACROM_SIZE 0x00100000
54
55 #define MACROM_FILENAME "MacROM.bin"
56
57 #define IO_BASE 0x50000000
58 #define IO_SLICE 0x00040000
59 #define IO_SIZE 0x04000000
60
61 #define VIA_BASE (IO_BASE + 0x00000)
62 #define SONIC_PROM_BASE (IO_BASE + 0x08000)
63 #define SONIC_BASE (IO_BASE + 0x0a000)
64 #define SCC_BASE (IO_BASE + 0x0c020)
65 #define ESP_BASE (IO_BASE + 0x10000)
66 #define ESP_PDMA (IO_BASE + 0x10100)
67 #define ASC_BASE (IO_BASE + 0x14000)
68 #define SWIM_BASE (IO_BASE + 0x1E000)
69
70 #define NUBUS_SUPER_SLOT_BASE 0x60000000
71 #define NUBUS_SLOT_BASE 0xf0000000
72
73 #define SONIC_PROM_SIZE 0x1000
74
75 /*
76 * the video base, whereas it a Nubus address,
77 * is needed by the kernel to have early display and
78 * thus provided by the bootloader
79 */
80 #define VIDEO_BASE 0xf9001000
81
82 #define MAC_CLOCK 3686418
83
84 /*
85 * The GLUE (General Logic Unit) is an Apple custom integrated circuit chip
86 * that performs a variety of functions (RAM management, clock generation, ...).
87 * The GLUE chip receives interrupt requests from various devices,
88 * assign priority to each, and asserts one or more interrupt line to the
89 * CPU.
90 */
91
92 #define TYPE_GLUE "q800-glue"
93 OBJECT_DECLARE_SIMPLE_TYPE(GLUEState, GLUE)
94
95 struct GLUEState {
96 SysBusDevice parent_obj;
97 M68kCPU *cpu;
98 uint8_t ipr;
99 };
100
101 static void GLUE_set_irq(void *opaque, int irq, int level)
102 {
103 GLUEState *s = opaque;
104 int i;
105
106 if (level) {
107 s->ipr |= 1 << irq;
108 } else {
109 s->ipr &= ~(1 << irq);
110 }
111
112 for (i = 7; i >= 0; i--) {
113 if ((s->ipr >> i) & 1) {
114 m68k_set_irq_level(s->cpu, i + 1, i + 25);
115 return;
116 }
117 }
118 m68k_set_irq_level(s->cpu, 0, 0);
119 }
120
121 static void glue_reset(DeviceState *dev)
122 {
123 GLUEState *s = GLUE(dev);
124
125 s->ipr = 0;
126 }
127
128 static const VMStateDescription vmstate_glue = {
129 .name = "q800-glue",
130 .version_id = 0,
131 .minimum_version_id = 0,
132 .fields = (VMStateField[]) {
133 VMSTATE_UINT8(ipr, GLUEState),
134 VMSTATE_END_OF_LIST(),
135 },
136 };
137
138 /*
139 * If the m68k CPU implemented its inbound irq lines as GPIO lines
140 * rather than via the m68k_set_irq_level() function we would not need
141 * this cpu link property and could instead provide outbound IRQ lines
142 * that the board could wire up to the CPU.
143 */
144 static Property glue_properties[] = {
145 DEFINE_PROP_LINK("cpu", GLUEState, cpu, TYPE_M68K_CPU, M68kCPU *),
146 DEFINE_PROP_END_OF_LIST(),
147 };
148
149 static void glue_init(Object *obj)
150 {
151 DeviceState *dev = DEVICE(obj);
152
153 qdev_init_gpio_in(dev, GLUE_set_irq, 8);
154 }
155
156 static void glue_class_init(ObjectClass *klass, void *data)
157 {
158 DeviceClass *dc = DEVICE_CLASS(klass);
159
160 dc->vmsd = &vmstate_glue;
161 dc->reset = glue_reset;
162 device_class_set_props(dc, glue_properties);
163 }
164
165 static const TypeInfo glue_info = {
166 .name = TYPE_GLUE,
167 .parent = TYPE_SYS_BUS_DEVICE,
168 .instance_size = sizeof(GLUEState),
169 .instance_init = glue_init,
170 .class_init = glue_class_init,
171 };
172
173 static void main_cpu_reset(void *opaque)
174 {
175 M68kCPU *cpu = opaque;
176 CPUState *cs = CPU(cpu);
177
178 cpu_reset(cs);
179 cpu->env.aregs[7] = ldl_phys(cs->as, 0);
180 cpu->env.pc = ldl_phys(cs->as, 4);
181 }
182
183 static uint8_t fake_mac_rom[] = {
184 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
185
186 /* offset: 0xa - mac_reset */
187
188 /* via2[vDirB] |= VIA2B_vPower */
189 0x20, 0x7C, 0x50, 0xF0, 0x24, 0x00, /* moveal VIA2_BASE+vDirB,%a0 */
190 0x10, 0x10, /* moveb %a0@,%d0 */
191 0x00, 0x00, 0x00, 0x04, /* orib #4,%d0 */
192 0x10, 0x80, /* moveb %d0,%a0@ */
193
194 /* via2[vBufB] &= ~VIA2B_vPower */
195 0x20, 0x7C, 0x50, 0xF0, 0x20, 0x00, /* moveal VIA2_BASE+vBufB,%a0 */
196 0x10, 0x10, /* moveb %a0@,%d0 */
197 0x02, 0x00, 0xFF, 0xFB, /* andib #-5,%d0 */
198 0x10, 0x80, /* moveb %d0,%a0@ */
199
200 /* while (true) ; */
201 0x60, 0xFE /* bras [self] */
202 };
203
204 static void q800_init(MachineState *machine)
205 {
206 M68kCPU *cpu = NULL;
207 int linux_boot;
208 int32_t kernel_size;
209 uint64_t elf_entry;
210 char *filename;
211 int bios_size;
212 ram_addr_t initrd_base;
213 int32_t initrd_size;
214 MemoryRegion *rom;
215 MemoryRegion *io;
216 MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1);
217 uint8_t *prom;
218 const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1;
219 int i, checksum;
220 ram_addr_t ram_size = machine->ram_size;
221 const char *kernel_filename = machine->kernel_filename;
222 const char *initrd_filename = machine->initrd_filename;
223 const char *kernel_cmdline = machine->kernel_cmdline;
224 const char *bios_name = machine->firmware ?: MACROM_FILENAME;
225 hwaddr parameters_base;
226 CPUState *cs;
227 DeviceState *dev;
228 DeviceState *via_dev;
229 DeviceState *escc_orgate;
230 SysBusESPState *sysbus_esp;
231 ESPState *esp;
232 SysBusDevice *sysbus;
233 BusState *adb_bus;
234 NubusBus *nubus;
235 DeviceState *glue;
236 DriveInfo *dinfo;
237
238 linux_boot = (kernel_filename != NULL);
239
240 if (ram_size > 1 * GiB) {
241 error_report("Too much memory for this machine: %" PRId64 " MiB, "
242 "maximum 1024 MiB", ram_size / MiB);
243 exit(1);
244 }
245
246 /* init CPUs */
247 cpu = M68K_CPU(cpu_create(machine->cpu_type));
248 qemu_register_reset(main_cpu_reset, cpu);
249
250 /* RAM */
251 memory_region_add_subregion(get_system_memory(), 0, machine->ram);
252
253 /*
254 * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated
255 * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE
256 */
257 io = g_new(MemoryRegion, io_slice_nb);
258 for (i = 0; i < io_slice_nb; i++) {
259 char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1);
260
261 memory_region_init_alias(&io[i], NULL, name, get_system_memory(),
262 IO_BASE, IO_SLICE);
263 memory_region_add_subregion(get_system_memory(),
264 IO_BASE + (i + 1) * IO_SLICE, &io[i]);
265 g_free(name);
266 }
267
268 /* IRQ Glue */
269 glue = qdev_new(TYPE_GLUE);
270 object_property_set_link(OBJECT(glue), "cpu", OBJECT(cpu), &error_abort);
271 sysbus_realize_and_unref(SYS_BUS_DEVICE(glue), &error_fatal);
272
273 /* VIA */
274
275 via_dev = qdev_new(TYPE_MAC_VIA);
276 dinfo = drive_get(IF_MTD, 0, 0);
277 if (dinfo) {
278 qdev_prop_set_drive(via_dev, "drive", blk_by_legacy_dinfo(dinfo));
279 }
280 sysbus = SYS_BUS_DEVICE(via_dev);
281 sysbus_realize_and_unref(sysbus, &error_fatal);
282 sysbus_mmio_map(sysbus, 0, VIA_BASE);
283 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0,
284 qdev_get_gpio_in(glue, 0));
285 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1,
286 qdev_get_gpio_in(glue, 1));
287
288
289 adb_bus = qdev_get_child_bus(via_dev, "adb.0");
290 dev = qdev_new(TYPE_ADB_KEYBOARD);
291 qdev_realize_and_unref(dev, adb_bus, &error_fatal);
292 dev = qdev_new(TYPE_ADB_MOUSE);
293 qdev_realize_and_unref(dev, adb_bus, &error_fatal);
294
295 /* MACSONIC */
296
297 if (nb_nics > 1) {
298 error_report("q800 can only have one ethernet interface");
299 exit(1);
300 }
301
302 qemu_check_nic_model(&nd_table[0], "dp83932");
303
304 /*
305 * MacSonic driver needs an Apple MAC address
306 * Valid prefix are:
307 * 00:05:02 Apple
308 * 00:80:19 Dayna Communications, Inc.
309 * 00:A0:40 Apple
310 * 08:00:07 Apple
311 * (Q800 use the last one)
312 */
313 nd_table[0].macaddr.a[0] = 0x08;
314 nd_table[0].macaddr.a[1] = 0x00;
315 nd_table[0].macaddr.a[2] = 0x07;
316
317 dev = qdev_new("dp8393x");
318 qdev_set_nic_properties(dev, &nd_table[0]);
319 qdev_prop_set_uint8(dev, "it_shift", 2);
320 qdev_prop_set_bit(dev, "big_endian", true);
321 object_property_set_link(OBJECT(dev), "dma_mr",
322 OBJECT(get_system_memory()), &error_abort);
323 sysbus = SYS_BUS_DEVICE(dev);
324 sysbus_realize_and_unref(sysbus, &error_fatal);
325 sysbus_mmio_map(sysbus, 0, SONIC_BASE);
326 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(glue, 2));
327
328 memory_region_init_rom(dp8393x_prom, NULL, "dp8393x-q800.prom",
329 SONIC_PROM_SIZE, &error_fatal);
330 memory_region_add_subregion(get_system_memory(), SONIC_PROM_BASE,
331 dp8393x_prom);
332
333 /* Add MAC address with valid checksum to PROM */
334 prom = memory_region_get_ram_ptr(dp8393x_prom);
335 checksum = 0;
336 for (i = 0; i < 6; i++) {
337 prom[i] = bitrev8(nd_table[0].macaddr.a[i]);
338 checksum ^= prom[i];
339 }
340 prom[7] = 0xff - checksum;
341
342 /* SCC */
343
344 dev = qdev_new(TYPE_ESCC);
345 qdev_prop_set_uint32(dev, "disabled", 0);
346 qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK);
347 qdev_prop_set_uint32(dev, "it_shift", 1);
348 qdev_prop_set_bit(dev, "bit_swap", true);
349 qdev_prop_set_chr(dev, "chrA", serial_hd(0));
350 qdev_prop_set_chr(dev, "chrB", serial_hd(1));
351 qdev_prop_set_uint32(dev, "chnBtype", 0);
352 qdev_prop_set_uint32(dev, "chnAtype", 0);
353 sysbus = SYS_BUS_DEVICE(dev);
354 sysbus_realize_and_unref(sysbus, &error_fatal);
355
356 /* Logically OR both its IRQs together */
357 escc_orgate = DEVICE(object_new(TYPE_OR_IRQ));
358 object_property_set_int(OBJECT(escc_orgate), "num-lines", 2, &error_fatal);
359 qdev_realize_and_unref(escc_orgate, NULL, &error_fatal);
360 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(escc_orgate, 0));
361 sysbus_connect_irq(sysbus, 1, qdev_get_gpio_in(escc_orgate, 1));
362 qdev_connect_gpio_out(DEVICE(escc_orgate), 0, qdev_get_gpio_in(glue, 3));
363 sysbus_mmio_map(sysbus, 0, SCC_BASE);
364
365 /* SCSI */
366
367 dev = qdev_new(TYPE_SYSBUS_ESP);
368 sysbus_esp = SYSBUS_ESP(dev);
369 esp = &sysbus_esp->esp;
370 esp->dma_memory_read = NULL;
371 esp->dma_memory_write = NULL;
372 esp->dma_opaque = NULL;
373 sysbus_esp->it_shift = 4;
374 esp->dma_enabled = 1;
375
376 sysbus = SYS_BUS_DEVICE(dev);
377 sysbus_realize_and_unref(sysbus, &error_fatal);
378 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev,
379 "via2-irq",
380 VIA2_IRQ_SCSI_BIT));
381 sysbus_connect_irq(sysbus, 1,
382 qdev_get_gpio_in_named(via_dev, "via2-irq",
383 VIA2_IRQ_SCSI_DATA_BIT));
384 sysbus_mmio_map(sysbus, 0, ESP_BASE);
385 sysbus_mmio_map(sysbus, 1, ESP_PDMA);
386
387 scsi_bus_legacy_handle_cmdline(&esp->bus);
388
389 /* SWIM floppy controller */
390
391 dev = qdev_new(TYPE_SWIM);
392 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
393 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE);
394
395 /* NuBus */
396
397 dev = qdev_new(TYPE_MAC_NUBUS_BRIDGE);
398 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
399 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE);
400 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE);
401
402 nubus = MAC_NUBUS_BRIDGE(dev)->bus;
403
404 /* framebuffer in nubus slot #9 */
405
406 dev = qdev_new(TYPE_NUBUS_MACFB);
407 qdev_prop_set_uint32(dev, "width", graphic_width);
408 qdev_prop_set_uint32(dev, "height", graphic_height);
409 qdev_prop_set_uint8(dev, "depth", graphic_depth);
410 qdev_realize_and_unref(dev, BUS(nubus), &error_fatal);
411
412 cs = CPU(cpu);
413 if (linux_boot) {
414 uint64_t high;
415 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
416 &elf_entry, NULL, &high, NULL, 1,
417 EM_68K, 0, 0);
418 if (kernel_size < 0) {
419 error_report("could not load kernel '%s'", kernel_filename);
420 exit(1);
421 }
422 stl_phys(cs->as, 4, elf_entry); /* reset initial PC */
423 parameters_base = (high + 1) & ~1;
424
425 BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC);
426 BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, FPU_68040);
427 BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, MMU_68040);
428 BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, CPU_68040);
429 BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, CPUB_68040);
430 BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, MAC_MODEL_Q800);
431 BOOTINFO1(cs->as, parameters_base,
432 BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */
433 BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size);
434 BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE);
435 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth);
436 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM,
437 (graphic_height << 16) | graphic_width);
438 BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW,
439 (graphic_width * graphic_depth + 7) / 8);
440 BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE);
441
442 rom = g_malloc(sizeof(*rom));
443 memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom",
444 sizeof(fake_mac_rom), fake_mac_rom);
445 memory_region_set_readonly(rom, true);
446 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
447
448 if (kernel_cmdline) {
449 BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE,
450 kernel_cmdline);
451 }
452
453 /* load initrd */
454 if (initrd_filename) {
455 initrd_size = get_image_size(initrd_filename);
456 if (initrd_size < 0) {
457 error_report("could not load initial ram disk '%s'",
458 initrd_filename);
459 exit(1);
460 }
461
462 initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK;
463 load_image_targphys(initrd_filename, initrd_base,
464 ram_size - initrd_base);
465 BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base,
466 initrd_size);
467 } else {
468 initrd_base = 0;
469 initrd_size = 0;
470 }
471 BOOTINFO0(cs->as, parameters_base, BI_LAST);
472 } else {
473 uint8_t *ptr;
474 /* allocate and load BIOS */
475 rom = g_malloc(sizeof(*rom));
476 memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE,
477 &error_abort);
478 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
479 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
480
481 /* Load MacROM binary */
482 if (filename) {
483 bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE);
484 g_free(filename);
485 } else {
486 bios_size = -1;
487 }
488
489 /* Remove qtest_enabled() check once firmware files are in the tree */
490 if (!qtest_enabled()) {
491 if (bios_size < 0 || bios_size > MACROM_SIZE) {
492 error_report("could not load MacROM '%s'", bios_name);
493 exit(1);
494 }
495
496 ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE);
497 stl_phys(cs->as, 0, ldl_p(ptr)); /* reset initial SP */
498 stl_phys(cs->as, 4,
499 MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */
500 }
501 }
502 }
503
504 static void q800_machine_class_init(ObjectClass *oc, void *data)
505 {
506 MachineClass *mc = MACHINE_CLASS(oc);
507 mc->desc = "Macintosh Quadra 800";
508 mc->init = q800_init;
509 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
510 mc->max_cpus = 1;
511 mc->block_default_type = IF_SCSI;
512 mc->default_ram_id = "m68k_mac.ram";
513 }
514
515 static const TypeInfo q800_machine_typeinfo = {
516 .name = MACHINE_TYPE_NAME("q800"),
517 .parent = TYPE_MACHINE,
518 .class_init = q800_machine_class_init,
519 };
520
521 static void q800_machine_register_types(void)
522 {
523 type_register_static(&q800_machine_typeinfo);
524 type_register_static(&glue_info);
525 }
526
527 type_init(q800_machine_register_types)