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hw/mips: Add Loongson-3 machine support
[qemu/ar7.git] / hw / mips / loongson3_virt.c
blobd4a82fa53674c0804af322e9c341e1a41e020795
1 /*
2 * Generic Loongson-3 Platform support
3 *
4 * Copyright (c) 2018-2020 Huacai Chen (chenhc@lemote.com)
5 * Copyright (c) 2018-2020 Jiaxun Yang <jiaxun.yang@flygoat.com>
6 *
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
19 */
20
21 /*
22 * Generic virtualized PC Platform based on Loongson-3 CPU (MIPS64R2 with
23 * extensions, 800~2000MHz)
24 */
25
26 #include "qemu/osdep.h"
27 #include "qemu-common.h"
28 #include "qemu/units.h"
29 #include "qemu/cutils.h"
30 #include "qemu/datadir.h"
31 #include "qapi/error.h"
32 #include "cpu.h"
33 #include "elf.h"
34 #include "kvm_mips.h"
35 #include "hw/boards.h"
36 #include "hw/char/serial.h"
37 #include "hw/intc/loongson_liointc.h"
38 #include "hw/mips/mips.h"
39 #include "hw/mips/cpudevs.h"
40 #include "hw/mips/fw_cfg.h"
41 #include "hw/mips/loongson3_bootp.h"
42 #include "hw/misc/unimp.h"
43 #include "hw/intc/i8259.h"
44 #include "hw/loader.h"
45 #include "hw/isa/superio.h"
46 #include "hw/pci/msi.h"
47 #include "hw/pci/pci.h"
48 #include "hw/pci/pci_host.h"
49 #include "hw/pci-host/gpex.h"
50 #include "hw/usb.h"
51 #include "net/net.h"
52 #include "exec/address-spaces.h"
53 #include "sysemu/kvm.h"
54 #include "sysemu/qtest.h"
55 #include "sysemu/reset.h"
56 #include "sysemu/runstate.h"
57 #include "qemu/log.h"
58 #include "qemu/error-report.h"
59
60 #define PM_CNTL_MODE 0x10
61
62 #define LOONGSON_MAX_VCPUS 16
63
64 /*
65 * Loongson-3's virtual machine BIOS can be obtained here:
66 * 1, https://github.com/loongson-community/firmware-nonfree
67 * 2, http://dev.lemote.com:8000/files/firmware/UEFI/KVM/bios_loongson3.bin
68 */
69 #define LOONGSON3_BIOSNAME "bios_loongson3.bin"
70
71 #define UART_IRQ 0
72 #define RTC_IRQ 1
73 #define PCIE_IRQ_BASE 2
74
75 const struct MemmapEntry virt_memmap[] = {
76 [VIRT_LOWMEM] = { 0x00000000, 0x10000000 },
77 [VIRT_PM] = { 0x10080000, 0x100 },
78 [VIRT_FW_CFG] = { 0x10080100, 0x100 },
79 [VIRT_RTC] = { 0x10081000, 0x1000 },
80 [VIRT_PCIE_PIO] = { 0x18000000, 0x80000 },
81 [VIRT_PCIE_ECAM] = { 0x1a000000, 0x2000000 },
82 [VIRT_BIOS_ROM] = { 0x1fc00000, 0x200000 },
83 [VIRT_UART] = { 0x1fe001e0, 0x8 },
84 [VIRT_LIOINTC] = { 0x3ff01400, 0x64 },
85 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 },
86 [VIRT_HIGHMEM] = { 0x80000000, 0x0 }, /* Variable */
87 };
88
89 static const struct MemmapEntry loader_memmap[] = {
90 [LOADER_KERNEL] = { 0x00000000, 0x4000000 },
91 [LOADER_INITRD] = { 0x04000000, 0x0 }, /* Variable */
92 [LOADER_CMDLINE] = { 0x0ff00000, 0x100000 },
93 };
94
95 static const struct MemmapEntry loader_rommap[] = {
96 [LOADER_BOOTROM] = { 0x1fc00000, 0x1000 },
97 [LOADER_PARAM] = { 0x1fc01000, 0x10000 },
98 };
99
100 struct LoongsonMachineState {
101 MachineState parent_obj;
102 MemoryRegion *pio_alias;
103 MemoryRegion *mmio_alias;
104 MemoryRegion *ecam_alias;
105 };
106 typedef struct LoongsonMachineState LoongsonMachineState;
107
108 #define TYPE_LOONGSON_MACHINE MACHINE_TYPE_NAME("loongson3-virt")
109 DECLARE_INSTANCE_CHECKER(LoongsonMachineState, LOONGSON_MACHINE, TYPE_LOONGSON_MACHINE)
110
111 static struct _loaderparams {
112 uint64_t cpu_freq;
113 uint64_t ram_size;
114 const char *kernel_cmdline;
115 const char *kernel_filename;
116 const char *initrd_filename;
117 uint64_t kernel_entry;
118 uint64_t a0, a1, a2;
119 } loaderparams;
120
121 static uint64_t loongson3_pm_read(void *opaque, hwaddr addr, unsigned size)
122 {
123 return 0;
124 }
125
126 static void loongson3_pm_write(void *opaque, hwaddr addr,
127 uint64_t val, unsigned size)
128 {
129 if (addr != PM_CNTL_MODE) {
130 return;
131 }
132
133 switch (val) {
134 case 0x00:
135 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
136 return;
137 case 0xff:
138 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
139 return;
140 default:
141 return;
142 }
143 }
144
145 static const MemoryRegionOps loongson3_pm_ops = {
146 .read = loongson3_pm_read,
147 .write = loongson3_pm_write,
148 .endianness = DEVICE_NATIVE_ENDIAN,
149 .valid = {
150 .min_access_size = 1,
151 .max_access_size = 1
152 }
153 };
154
155 #define DEF_LOONGSON3_FREQ (800 * 1000 * 1000)
156
157 static uint64_t get_cpu_freq_hz(void)
158 {
159 #ifdef CONFIG_KVM
160 int ret;
161 uint64_t freq;
162 struct kvm_one_reg freq_reg = {
163 .id = KVM_REG_MIPS_COUNT_HZ,
164 .addr = (uintptr_t)(&freq)
165 };
166
167 if (kvm_enabled()) {
168 ret = kvm_vcpu_ioctl(first_cpu, KVM_GET_ONE_REG, &freq_reg);
169 if (ret >= 0) {
170 return freq * 2;
171 }
172 }
173 #endif
174 return DEF_LOONGSON3_FREQ;
175 }
176
177 static void init_boot_param(void)
178 {
179 static void *p;
180 struct boot_params *bp;
181
182 p = g_malloc0(loader_rommap[LOADER_PARAM].size);
183 bp = p;
184
185 bp->efi.smbios.vers = cpu_to_le16(1);
186 init_reset_system(&(bp->reset_system));
187 p += ROUND_UP(sizeof(struct boot_params), 64);
188 init_loongson_params(&(bp->efi.smbios.lp), p,
189 loaderparams.cpu_freq, loaderparams.ram_size);
190
191 rom_add_blob_fixed("params_rom", bp,
192 loader_rommap[LOADER_PARAM].size,
193 loader_rommap[LOADER_PARAM].base);
194
195 g_free(bp);
196
197 loaderparams.a2 = cpu_mips_phys_to_kseg0(NULL,
198 loader_rommap[LOADER_PARAM].base);
199 }
200
201 static void init_boot_rom(void)
202 {
203 const unsigned int boot_code[] = {
204 0x40086000, /* mfc0 t0, CP0_STATUS */
205 0x240900E4, /* li t1, 0xe4 #set kx, sx, ux, erl */
206 0x01094025, /* or t0, t0, t1 */
207 0x3C090040, /* lui t1, 0x40 #set bev */
208 0x01094025, /* or t0, t0, t1 */
209 0x40886000, /* mtc0 t0, CP0_STATUS */
210 0x00000000,
211 0x40806800, /* mtc0 zero, CP0_CAUSE */
212 0x00000000,
213 0x400A7801, /* mfc0 t2, $15, 1 */
214 0x314A00FF, /* andi t2, 0x0ff */
215 0x3C089000, /* dli t0, 0x900000003ff01000 */
216 0x00084438,
217 0x35083FF0,
218 0x00084438,
219 0x35081000,
220 0x314B0003, /* andi t3, t2, 0x3 #local cpuid */
221 0x000B5A00, /* sll t3, 8 */
222 0x010B4025, /* or t0, t0, t3 */
223 0x314C000C, /* andi t4, t2, 0xc #node id */
224 0x000C62BC, /* dsll t4, 42 */
225 0x010C4025, /* or t0, t0, t4 */
226 /* WaitForInit: */
227 0xDD020020, /* ld v0, FN_OFF(t0) #FN_OFF 0x020 */
228 0x1040FFFE, /* beqz v0, WaitForInit */
229 0x00000000, /* nop */
230 0xDD1D0028, /* ld sp, SP_OFF(t0) #FN_OFF 0x028 */
231 0xDD1C0030, /* ld gp, GP_OFF(t0) #FN_OFF 0x030 */
232 0xDD050038, /* ld a1, A1_OFF(t0) #FN_OFF 0x038 */
233 0x00400008, /* jr v0 #byebye */
234 0x00000000, /* nop */
235 0x1000FFFF, /* 1: b 1b */
236 0x00000000, /* nop */
237
238 /* Reset */
239 0x3C0C9000, /* dli t0, 0x9000000010080010 */
240 0x358C0000,
241 0x000C6438,
242 0x358C1008,
243 0x000C6438,
244 0x358C0010,
245 0x240D0000, /* li t1, 0x00 */
246 0xA18D0000, /* sb t1, (t0) */
247 0x1000FFFF, /* 1: b 1b */
248 0x00000000, /* nop */
249
250 /* Shutdown */
251 0x3C0C9000, /* dli t0, 0x9000000010080010 */
252 0x358C0000,
253 0x000C6438,
254 0x358C1008,
255 0x000C6438,
256 0x358C0010,
257 0x240D00FF, /* li t1, 0xff */
258 0xA18D0000, /* sb t1, (t0) */
259 0x1000FFFF, /* 1: b 1b */
260 0x00000000 /* nop */
261 };
262
263 rom_add_blob_fixed("boot_rom", boot_code, sizeof(boot_code),
264 loader_rommap[LOADER_BOOTROM].base);
265 }
266
267 static void fw_cfg_boot_set(void *opaque, const char *boot_device,
268 Error **errp)
269 {
270 fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
271 }
272
273 static void fw_conf_init(unsigned long ram_size)
274 {
275 FWCfgState *fw_cfg;
276 hwaddr cfg_addr = virt_memmap[VIRT_FW_CFG].base;
277
278 fw_cfg = fw_cfg_init_mem_wide(cfg_addr, cfg_addr + 8, 8, 0, NULL);
279 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)current_machine->smp.cpus);
280 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)current_machine->smp.max_cpus);
281 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
282 fw_cfg_add_i32(fw_cfg, FW_CFG_MACHINE_VERSION, 1);
283 fw_cfg_add_i64(fw_cfg, FW_CFG_CPU_FREQ, get_cpu_freq_hz());
284 qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
285 }
286
287 static int set_prom_cmdline(ram_addr_t initrd_offset, long initrd_size)
288 {
289 int ret = 0;
290 void *cmdline_buf;
291 hwaddr cmdline_vaddr;
292 unsigned int *parg_env;
293
294 /* Allocate cmdline_buf for command line. */
295 cmdline_buf = g_malloc0(loader_memmap[LOADER_CMDLINE].size);
296 cmdline_vaddr = cpu_mips_phys_to_kseg0(NULL,
297 loader_memmap[LOADER_CMDLINE].base);
298
299 /*
300 * Layout of cmdline_buf looks like this:
301 * argv[0], argv[1], 0, env[0], env[1], ... env[i], 0,
302 * argv[0]'s data, argv[1]'s data, env[0]'data, ..., env[i]'s data, 0
303 */
304 parg_env = (void *)cmdline_buf;
305
306 ret = (3 + 1) * 4;
307 *parg_env++ = cmdline_vaddr + ret;
308 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "g"));
309
310 /* argv1 */
311 *parg_env++ = cmdline_vaddr + ret;
312 if (initrd_size > 0)
313 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret,
314 "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s",
315 cpu_mips_phys_to_kseg0(NULL, initrd_offset),
316 initrd_size, loaderparams.kernel_cmdline));
317 else
318 ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "%s",
319 loaderparams.kernel_cmdline));
320
321 /* argv2 */
322 *parg_env++ = cmdline_vaddr + 4 * ret;
323
324 rom_add_blob_fixed("cmdline", cmdline_buf,
325 loader_memmap[LOADER_CMDLINE].size,
326 loader_memmap[LOADER_CMDLINE].base);
327
328 g_free(cmdline_buf);
329
330 loaderparams.a0 = 2;
331 loaderparams.a1 = cmdline_vaddr;
332
333 return 0;
334 }
335
336 static uint64_t load_kernel(CPUMIPSState *env)
337 {
338 long kernel_size;
339 ram_addr_t initrd_offset;
340 uint64_t kernel_entry, kernel_low, kernel_high, initrd_size;
341
342 kernel_size = load_elf(loaderparams.kernel_filename, NULL,
343 cpu_mips_kseg0_to_phys, NULL,
344 (uint64_t *)&kernel_entry,
345 (uint64_t *)&kernel_low, (uint64_t *)&kernel_high,
346 NULL, 0, EM_MIPS, 1, 0);
347 if (kernel_size < 0) {
348 error_report("could not load kernel '%s': %s",
349 loaderparams.kernel_filename,
350 load_elf_strerror(kernel_size));
351 exit(1);
352 }
353
354 /* load initrd */
355 initrd_size = 0;
356 initrd_offset = 0;
357 if (loaderparams.initrd_filename) {
358 initrd_size = get_image_size(loaderparams.initrd_filename);
359 if (initrd_size > 0) {
360 initrd_offset = MAX(loader_memmap[LOADER_INITRD].base,
361 ROUND_UP(kernel_high, INITRD_PAGE_SIZE));
362
363 if (initrd_offset + initrd_size > loaderparams.ram_size) {
364 error_report("memory too small for initial ram disk '%s'",
365 loaderparams.initrd_filename);
366 exit(1);
367 }
368
369 initrd_size = load_image_targphys(loaderparams.initrd_filename,
370 initrd_offset,
371 loaderparams.ram_size - initrd_offset);
372 }
373
374 if (initrd_size == (target_ulong) -1) {
375 error_report("could not load initial ram disk '%s'",
376 loaderparams.initrd_filename);
377 exit(1);
378 }
379 }
380
381 /* Setup prom cmdline. */
382 set_prom_cmdline(initrd_offset, initrd_size);
383
384 return kernel_entry;
385 }
386
387 static void main_cpu_reset(void *opaque)
388 {
389 MIPSCPU *cpu = opaque;
390 CPUMIPSState *env = &cpu->env;
391
392 cpu_reset(CPU(cpu));
393
394 /* Loongson-3 reset stuff */
395 if (loaderparams.kernel_filename) {
396 if (cpu == MIPS_CPU(first_cpu)) {
397 env->active_tc.gpr[4] = loaderparams.a0;
398 env->active_tc.gpr[5] = loaderparams.a1;
399 env->active_tc.gpr[6] = loaderparams.a2;
400 env->active_tc.PC = loaderparams.kernel_entry;
401 }
402 env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL));
403 }
404 }
405
406 static inline void loongson3_virt_devices_init(MachineState *machine,
407 DeviceState *pic)
408 {
409 int i;
410 qemu_irq irq;
411 PCIBus *pci_bus;
412 DeviceState *dev;
413 MemoryRegion *mmio_reg, *ecam_reg;
414 LoongsonMachineState *s = LOONGSON_MACHINE(machine);
415
416 dev = qdev_new(TYPE_GPEX_HOST);
417 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
418 pci_bus = PCI_HOST_BRIDGE(dev)->bus;
419
420 s->ecam_alias = g_new0(MemoryRegion, 1);
421 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
422 memory_region_init_alias(s->ecam_alias, OBJECT(dev), "pcie-ecam",
423 ecam_reg, 0, virt_memmap[VIRT_PCIE_ECAM].size);
424 memory_region_add_subregion(get_system_memory(),
425 virt_memmap[VIRT_PCIE_ECAM].base,
426 s->ecam_alias);
427
428 s->mmio_alias = g_new0(MemoryRegion, 1);
429 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
430 memory_region_init_alias(s->mmio_alias, OBJECT(dev), "pcie-mmio",
431 mmio_reg, virt_memmap[VIRT_PCIE_MMIO].base,
432 virt_memmap[VIRT_PCIE_MMIO].size);
433 memory_region_add_subregion(get_system_memory(),
434 virt_memmap[VIRT_PCIE_MMIO].base,
435 s->mmio_alias);
436
437 s->pio_alias = g_new0(MemoryRegion, 1);
438 memory_region_init_alias(s->pio_alias, OBJECT(dev), "pcie-pio",
439 get_system_io(), 0,
440 virt_memmap[VIRT_PCIE_PIO].size);
441 memory_region_add_subregion(get_system_memory(),
442 virt_memmap[VIRT_PCIE_PIO].base, s->pio_alias);
443 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, virt_memmap[VIRT_PCIE_PIO].base);
444
445 for (i = 0; i < GPEX_NUM_IRQS; i++) {
446 irq = qdev_get_gpio_in(pic, PCIE_IRQ_BASE + i);
447 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq);
448 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ_BASE + i);
449 }
450 msi_nonbroken = true;
451
452 pci_vga_init(pci_bus);
453
454 if (defaults_enabled()) {
455 pci_create_simple(pci_bus, -1, "pci-ohci");
456 usb_create_simple(usb_bus_find(-1), "usb-kbd");
457 usb_create_simple(usb_bus_find(-1), "usb-tablet");
458 }
459
460 for (i = 0; i < nb_nics; i++) {
461 NICInfo *nd = &nd_table[i];
462
463 if (!nd->model) {
464 nd->model = g_strdup("virtio");
465 }
466
467 pci_nic_init_nofail(nd, pci_bus, nd->model, NULL);
468 }
469 }
470
471 static void mips_loongson3_virt_init(MachineState *machine)
472 {
473 int i;
474 long bios_size;
475 MIPSCPU *cpu;
476 Clock *cpuclk;
477 CPUMIPSState *env;
478 DeviceState *liointc;
479 char *filename;
480 const char *kernel_cmdline = machine->kernel_cmdline;
481 const char *kernel_filename = machine->kernel_filename;
482 const char *initrd_filename = machine->initrd_filename;
483 ram_addr_t ram_size = machine->ram_size;
484 MemoryRegion *address_space_mem = get_system_memory();
485 MemoryRegion *ram = g_new(MemoryRegion, 1);
486 MemoryRegion *bios = g_new(MemoryRegion, 1);
487 MemoryRegion *iomem = g_new(MemoryRegion, 1);
488
489 /* TODO: TCG will support all CPU types */
490 if (!kvm_enabled()) {
491 if (!machine->cpu_type) {
492 machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A1000");
493 }
494 if (!strstr(machine->cpu_type, "Loongson-3A1000")) {
495 error_report("Loongson-3/TCG needs cpu type Loongson-3A1000");
496 exit(1);
497 }
498 } else {
499 if (!machine->cpu_type) {
500 machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A4000");
501 }
502 if (!strstr(machine->cpu_type, "Loongson-3A4000")) {
503 error_report("Loongson-3/KVM needs cpu type Loongson-3A4000");
504 exit(1);
505 }
506 }
507
508 if (ram_size < 512 * MiB) {
509 error_report("Loongson-3 machine needs at least 512MB memory");
510 exit(1);
511 }
512
513 /*
514 * The whole MMIO range among configure registers doesn't generate
515 * exception when accessing invalid memory. Create some unimplememted
516 * devices to emulate this feature.
517 */
518 create_unimplemented_device("mmio fallback 0", 0x10000000, 256 * MiB);
519 create_unimplemented_device("mmio fallback 1", 0x30000000, 256 * MiB);
520
521 liointc = qdev_new("loongson.liointc");
522 sysbus_realize_and_unref(SYS_BUS_DEVICE(liointc), &error_fatal);
523
524 sysbus_mmio_map(SYS_BUS_DEVICE(liointc), 0, virt_memmap[VIRT_LIOINTC].base);
525
526 serial_mm_init(address_space_mem, virt_memmap[VIRT_UART].base, 0,
527 qdev_get_gpio_in(liointc, UART_IRQ), 115200, serial_hd(0),
528 DEVICE_NATIVE_ENDIAN);
529
530 sysbus_create_simple("goldfish_rtc", virt_memmap[VIRT_RTC].base,
531 qdev_get_gpio_in(liointc, RTC_IRQ));
532
533 cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
534 clock_set_hz(cpuclk, DEF_LOONGSON3_FREQ);
535
536 for (i = 0; i < machine->smp.cpus; i++) {
537 int ip;
538
539 /* init CPUs */
540 cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
541
542 /* Init internal devices */
543 cpu_mips_irq_init_cpu(cpu);
544 cpu_mips_clock_init(cpu);
545 qemu_register_reset(main_cpu_reset, cpu);
546
547 if (i >= 4) {
548 continue; /* Only node-0 can be connected to LIOINTC */
549 }
550
551 for (ip = 0; ip < 4 ; ip++) {
552 int pin = i * 4 + ip;
553 sysbus_connect_irq(SYS_BUS_DEVICE(liointc),
554 pin, cpu->env.irq[ip + 2]);
555 }
556 }
557 env = &MIPS_CPU(first_cpu)->env;
558
559 /* Allocate RAM/BIOS, 0x00000000~0x10000000 is alias of 0x80000000~0x90000000 */
560 memory_region_init_rom(bios, NULL, "loongson3.bios",
561 virt_memmap[VIRT_BIOS_ROM].size, &error_fatal);
562 memory_region_init_alias(ram, NULL, "loongson3.lowmem",
563 machine->ram, 0, virt_memmap[VIRT_LOWMEM].size);
564 memory_region_init_io(iomem, NULL, &loongson3_pm_ops,
565 NULL, "loongson3_pm", virt_memmap[VIRT_PM].size);
566
567 memory_region_add_subregion(address_space_mem,
568 virt_memmap[VIRT_LOWMEM].base, ram);
569 memory_region_add_subregion(address_space_mem,
570 virt_memmap[VIRT_BIOS_ROM].base, bios);
571 memory_region_add_subregion(address_space_mem,
572 virt_memmap[VIRT_HIGHMEM].base, machine->ram);
573 memory_region_add_subregion(address_space_mem,
574 virt_memmap[VIRT_PM].base, iomem);
575
576 /*
577 * We do not support flash operation, just loading bios.bin as raw BIOS.
578 * Please use -L to set the BIOS path and -bios to set bios name.
579 */
580
581 if (kernel_filename) {
582 loaderparams.cpu_freq = get_cpu_freq_hz();
583 loaderparams.ram_size = ram_size;
584 loaderparams.kernel_filename = kernel_filename;
585 loaderparams.kernel_cmdline = kernel_cmdline;
586 loaderparams.initrd_filename = initrd_filename;
587 loaderparams.kernel_entry = load_kernel(env);
588
589 init_boot_rom();
590 init_boot_param();
591 } else {
592 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS,
593 machine->firmware ?: LOONGSON3_BIOSNAME);
594 if (filename) {
595 bios_size = load_image_targphys(filename,
596 virt_memmap[VIRT_BIOS_ROM].base,
597 virt_memmap[VIRT_BIOS_ROM].size);
598 g_free(filename);
599 } else {
600 bios_size = -1;
601 }
602
603 if ((bios_size < 0 || bios_size > virt_memmap[VIRT_BIOS_ROM].size) &&
604 !kernel_filename && !qtest_enabled()) {
605 error_report("Could not load MIPS bios '%s'", machine->firmware);
606 exit(1);
607 }
608
609 fw_conf_init(ram_size);
610 }
611
612 loongson3_virt_devices_init(machine, liointc);
613 }
614
615 static void loongson3v_machine_class_init(ObjectClass *oc, void *data)
616 {
617 MachineClass *mc = MACHINE_CLASS(oc);
618
619 mc->desc = "Loongson-3 Virtualization Platform";
620 mc->init = mips_loongson3_virt_init;
621 mc->block_default_type = IF_IDE;
622 mc->max_cpus = LOONGSON_MAX_VCPUS;
623 mc->default_ram_id = "loongson3.highram";
624 mc->default_ram_size = 1600 * MiB;
625 mc->kvm_type = mips_kvm_type;
626 mc->minimum_page_bits = 14;
627 }
628
629 static const TypeInfo loongson3_machine_types[] = {
630 {
631 .name = TYPE_LOONGSON_MACHINE,
632 .parent = TYPE_MACHINE,
633 .instance_size = sizeof(LoongsonMachineState),
634 .class_init = loongson3v_machine_class_init,
635 }
636 };
637
638 DEFINE_TYPES(loongson3_machine_types)
AR7 emulation for QEMU