xref: /openbmc/qemu/hw/ppc/mac_newworld.c (revision 39164c13)
1 /*
2  * QEMU PowerPC CHRP (currently NewWorld PowerMac) hardware System Emulator
3  *
4  * Copyright (c) 2004-2007 Fabrice Bellard
5  * Copyright (c) 2007 Jocelyn Mayer
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  *
25  * PCI bus layout on a real G5 (U3 based):
26  *
27  * 0000:f0:0b.0 Host bridge [0600]: Apple Computer Inc. U3 AGP [106b:004b]
28  * 0000:f0:10.0 VGA compatible controller [0300]: ATI Technologies Inc RV350 AP [Radeon 9600] [1002:4150]
29  * 0001:00:00.0 Host bridge [0600]: Apple Computer Inc. CPC945 HT Bridge [106b:004a]
30  * 0001:00:01.0 PCI bridge [0604]: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge [1022:7450] (rev 12)
31  * 0001:00:02.0 PCI bridge [0604]: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge [1022:7450] (rev 12)
32  * 0001:00:03.0 PCI bridge [0604]: Apple Computer Inc. K2 HT-PCI Bridge [106b:0045]
33  * 0001:00:04.0 PCI bridge [0604]: Apple Computer Inc. K2 HT-PCI Bridge [106b:0046]
34  * 0001:00:05.0 PCI bridge [0604]: Apple Computer Inc. K2 HT-PCI Bridge [106b:0047]
35  * 0001:00:06.0 PCI bridge [0604]: Apple Computer Inc. K2 HT-PCI Bridge [106b:0048]
36  * 0001:00:07.0 PCI bridge [0604]: Apple Computer Inc. K2 HT-PCI Bridge [106b:0049]
37  * 0001:01:07.0 Class [ff00]: Apple Computer Inc. K2 KeyLargo Mac/IO [106b:0041] (rev 20)
38  * 0001:01:08.0 USB Controller [0c03]: Apple Computer Inc. K2 KeyLargo USB [106b:0040]
39  * 0001:01:09.0 USB Controller [0c03]: Apple Computer Inc. K2 KeyLargo USB [106b:0040]
40  * 0001:02:0b.0 USB Controller [0c03]: NEC Corporation USB [1033:0035] (rev 43)
41  * 0001:02:0b.1 USB Controller [0c03]: NEC Corporation USB [1033:0035] (rev 43)
42  * 0001:02:0b.2 USB Controller [0c03]: NEC Corporation USB 2.0 [1033:00e0] (rev 04)
43  * 0001:03:0d.0 Class [ff00]: Apple Computer Inc. K2 ATA/100 [106b:0043]
44  * 0001:03:0e.0 FireWire (IEEE 1394) [0c00]: Apple Computer Inc. K2 FireWire [106b:0042]
45  * 0001:04:0f.0 Ethernet controller [0200]: Apple Computer Inc. K2 GMAC (Sun GEM) [106b:004c]
46  * 0001:05:0c.0 IDE interface [0101]: Broadcom K2 SATA [1166:0240]
47  *
48  */
49 #include "qemu/osdep.h"
50 #include "qapi/error.h"
51 #include "hw/hw.h"
52 #include "hw/ppc/ppc.h"
53 #include "hw/ppc/mac.h"
54 #include "hw/input/adb.h"
55 #include "hw/ppc/mac_dbdma.h"
56 #include "hw/timer/m48t59.h"
57 #include "hw/pci/pci.h"
58 #include "net/net.h"
59 #include "sysemu/sysemu.h"
60 #include "hw/boards.h"
61 #include "hw/nvram/fw_cfg.h"
62 #include "hw/char/escc.h"
63 #include "hw/ppc/openpic.h"
64 #include "hw/ide.h"
65 #include "hw/loader.h"
66 #include "elf.h"
67 #include "qemu/error-report.h"
68 #include "sysemu/kvm.h"
69 #include "kvm_ppc.h"
70 #include "hw/usb.h"
71 #include "sysemu/block-backend.h"
72 #include "exec/address-spaces.h"
73 #include "hw/sysbus.h"
74 #include "qemu/cutils.h"
75 #include "trace.h"
76 
77 #define MAX_IDE_BUS 2
78 #define CFG_ADDR 0xf0000510
79 #define TBFREQ (100UL * 1000UL * 1000UL)
80 #define CLOCKFREQ (266UL * 1000UL * 1000UL)
81 #define BUSFREQ (100UL * 1000UL * 1000UL)
82 
83 /* UniN device */
84 static void unin_write(void *opaque, hwaddr addr, uint64_t value,
85                        unsigned size)
86 {
87     trace_mac99_uninorth_write(addr, value);
88     if (addr == 0x0) {
89         *(int*)opaque = value;
90     }
91 }
92 
93 static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
94 {
95     uint32_t value;
96 
97     value = 0;
98     switch (addr) {
99     case 0:
100         value = *(int*)opaque;
101     }
102 
103     trace_mac99_uninorth_read(addr, value);
104 
105     return value;
106 }
107 
108 static const MemoryRegionOps unin_ops = {
109     .read = unin_read,
110     .write = unin_write,
111     .endianness = DEVICE_NATIVE_ENDIAN,
112 };
113 
114 static void fw_cfg_boot_set(void *opaque, const char *boot_device,
115                             Error **errp)
116 {
117     fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
118 }
119 
120 static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
121 {
122     return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;
123 }
124 
125 static hwaddr round_page(hwaddr addr)
126 {
127     return (addr + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;
128 }
129 
130 static void ppc_core99_reset(void *opaque)
131 {
132     PowerPCCPU *cpu = opaque;
133 
134     cpu_reset(CPU(cpu));
135     /* 970 CPUs want to get their initial IP as part of their boot protocol */
136     cpu->env.nip = PROM_ADDR + 0x100;
137 }
138 
139 /* PowerPC Mac99 hardware initialisation */
140 static void ppc_core99_init(MachineState *machine)
141 {
142     ram_addr_t ram_size = machine->ram_size;
143     const char *kernel_filename = machine->kernel_filename;
144     const char *kernel_cmdline = machine->kernel_cmdline;
145     const char *initrd_filename = machine->initrd_filename;
146     const char *boot_device = machine->boot_order;
147     PowerPCCPU *cpu = NULL;
148     CPUPPCState *env = NULL;
149     char *filename;
150     qemu_irq *pic, **openpic_irqs;
151     MemoryRegion *isa = g_new(MemoryRegion, 1);
152     MemoryRegion *unin_memory = g_new(MemoryRegion, 1);
153     MemoryRegion *unin2_memory = g_new(MemoryRegion, 1);
154     int linux_boot, i, j, k;
155     MemoryRegion *ram = g_new(MemoryRegion, 1), *bios = g_new(MemoryRegion, 1);
156     hwaddr kernel_base, initrd_base, cmdline_base = 0;
157     long kernel_size, initrd_size;
158     PCIBus *pci_bus;
159     PCIDevice *macio;
160     MACIOIDEState *macio_ide;
161     BusState *adb_bus;
162     MacIONVRAMState *nvr;
163     int bios_size;
164     MemoryRegion *pic_mem, *escc_mem;
165     MemoryRegion *escc_bar = g_new(MemoryRegion, 1);
166     int ppc_boot_device;
167     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
168     void *fw_cfg;
169     int machine_arch;
170     SysBusDevice *s;
171     DeviceState *dev;
172     int *token = g_new(int, 1);
173     hwaddr nvram_addr = 0xFFF04000;
174     uint64_t tbfreq;
175 
176     linux_boot = (kernel_filename != NULL);
177 
178     /* init CPUs */
179     if (machine->cpu_model == NULL) {
180 #ifdef TARGET_PPC64
181         machine->cpu_model = "970fx";
182 #else
183         machine->cpu_model = "G4";
184 #endif
185     }
186     for (i = 0; i < smp_cpus; i++) {
187         cpu = cpu_ppc_init(machine->cpu_model);
188         if (cpu == NULL) {
189             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
190             exit(1);
191         }
192         env = &cpu->env;
193 
194         /* Set time-base frequency to 100 Mhz */
195         cpu_ppc_tb_init(env, TBFREQ);
196         qemu_register_reset(ppc_core99_reset, cpu);
197     }
198 
199     /* allocate RAM */
200     memory_region_allocate_system_memory(ram, NULL, "ppc_core99.ram", ram_size);
201     memory_region_add_subregion(get_system_memory(), 0, ram);
202 
203     /* allocate and load BIOS */
204     memory_region_init_ram(bios, NULL, "ppc_core99.bios", BIOS_SIZE,
205                            &error_fatal);
206     vmstate_register_ram_global(bios);
207 
208     if (bios_name == NULL)
209         bios_name = PROM_FILENAME;
210     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
211     memory_region_set_readonly(bios, true);
212     memory_region_add_subregion(get_system_memory(), PROM_ADDR, bios);
213 
214     /* Load OpenBIOS (ELF) */
215     if (filename) {
216         bios_size = load_elf(filename, NULL, NULL, NULL,
217                              NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0);
218 
219         g_free(filename);
220     } else {
221         bios_size = -1;
222     }
223     if (bios_size < 0 || bios_size > BIOS_SIZE) {
224         error_report("could not load PowerPC bios '%s'", bios_name);
225         exit(1);
226     }
227 
228     if (linux_boot) {
229         uint64_t lowaddr = 0;
230         int bswap_needed;
231 
232 #ifdef BSWAP_NEEDED
233         bswap_needed = 1;
234 #else
235         bswap_needed = 0;
236 #endif
237         kernel_base = KERNEL_LOAD_ADDR;
238 
239         kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
240                                NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
241                                0, 0);
242         if (kernel_size < 0)
243             kernel_size = load_aout(kernel_filename, kernel_base,
244                                     ram_size - kernel_base, bswap_needed,
245                                     TARGET_PAGE_SIZE);
246         if (kernel_size < 0)
247             kernel_size = load_image_targphys(kernel_filename,
248                                               kernel_base,
249                                               ram_size - kernel_base);
250         if (kernel_size < 0) {
251             error_report("could not load kernel '%s'", kernel_filename);
252             exit(1);
253         }
254         /* load initrd */
255         if (initrd_filename) {
256             initrd_base = round_page(kernel_base + kernel_size + KERNEL_GAP);
257             initrd_size = load_image_targphys(initrd_filename, initrd_base,
258                                               ram_size - initrd_base);
259             if (initrd_size < 0) {
260                 error_report("could not load initial ram disk '%s'",
261                              initrd_filename);
262                 exit(1);
263             }
264             cmdline_base = round_page(initrd_base + initrd_size);
265         } else {
266             initrd_base = 0;
267             initrd_size = 0;
268             cmdline_base = round_page(kernel_base + kernel_size + KERNEL_GAP);
269         }
270         ppc_boot_device = 'm';
271     } else {
272         kernel_base = 0;
273         kernel_size = 0;
274         initrd_base = 0;
275         initrd_size = 0;
276         ppc_boot_device = '\0';
277         /* We consider that NewWorld PowerMac never have any floppy drive
278          * For now, OHW cannot boot from the network.
279          */
280         for (i = 0; boot_device[i] != '\0'; i++) {
281             if (boot_device[i] >= 'c' && boot_device[i] <= 'f') {
282                 ppc_boot_device = boot_device[i];
283                 break;
284             }
285         }
286         if (ppc_boot_device == '\0') {
287             fprintf(stderr, "No valid boot device for Mac99 machine\n");
288             exit(1);
289         }
290     }
291 
292     /* Register 8 MB of ISA IO space */
293     memory_region_init_alias(isa, NULL, "isa_mmio",
294                              get_system_io(), 0, 0x00800000);
295     memory_region_add_subregion(get_system_memory(), 0xf2000000, isa);
296 
297     /* UniN init: XXX should be a real device */
298     memory_region_init_io(unin_memory, NULL, &unin_ops, token, "unin", 0x1000);
299     memory_region_add_subregion(get_system_memory(), 0xf8000000, unin_memory);
300 
301     memory_region_init_io(unin2_memory, NULL, &unin_ops, token, "unin", 0x1000);
302     memory_region_add_subregion(get_system_memory(), 0xf3000000, unin2_memory);
303 
304     openpic_irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));
305     openpic_irqs[0] =
306         g_malloc0(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
307     for (i = 0; i < smp_cpus; i++) {
308         /* Mac99 IRQ connection between OpenPIC outputs pins
309          * and PowerPC input pins
310          */
311         switch (PPC_INPUT(env)) {
312         case PPC_FLAGS_INPUT_6xx:
313             openpic_irqs[i] = openpic_irqs[0] + (i * OPENPIC_OUTPUT_NB);
314             openpic_irqs[i][OPENPIC_OUTPUT_INT] =
315                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
316             openpic_irqs[i][OPENPIC_OUTPUT_CINT] =
317                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
318             openpic_irqs[i][OPENPIC_OUTPUT_MCK] =
319                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_MCP];
320             /* Not connected ? */
321             openpic_irqs[i][OPENPIC_OUTPUT_DEBUG] = NULL;
322             /* Check this */
323             openpic_irqs[i][OPENPIC_OUTPUT_RESET] =
324                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_HRESET];
325             break;
326 #if defined(TARGET_PPC64)
327         case PPC_FLAGS_INPUT_970:
328             openpic_irqs[i] = openpic_irqs[0] + (i * OPENPIC_OUTPUT_NB);
329             openpic_irqs[i][OPENPIC_OUTPUT_INT] =
330                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_INT];
331             openpic_irqs[i][OPENPIC_OUTPUT_CINT] =
332                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_INT];
333             openpic_irqs[i][OPENPIC_OUTPUT_MCK] =
334                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_MCP];
335             /* Not connected ? */
336             openpic_irqs[i][OPENPIC_OUTPUT_DEBUG] = NULL;
337             /* Check this */
338             openpic_irqs[i][OPENPIC_OUTPUT_RESET] =
339                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_HRESET];
340             break;
341 #endif /* defined(TARGET_PPC64) */
342         default:
343             error_report("Bus model not supported on mac99 machine");
344             exit(1);
345         }
346     }
347 
348     pic = g_new0(qemu_irq, 64);
349 
350     dev = qdev_create(NULL, TYPE_OPENPIC);
351     qdev_prop_set_uint32(dev, "model", OPENPIC_MODEL_RAVEN);
352     qdev_init_nofail(dev);
353     s = SYS_BUS_DEVICE(dev);
354     pic_mem = s->mmio[0].memory;
355     k = 0;
356     for (i = 0; i < smp_cpus; i++) {
357         for (j = 0; j < OPENPIC_OUTPUT_NB; j++) {
358             sysbus_connect_irq(s, k++, openpic_irqs[i][j]);
359         }
360     }
361 
362     for (i = 0; i < 64; i++) {
363         pic[i] = qdev_get_gpio_in(dev, i);
364     }
365 
366     if (PPC_INPUT(env) == PPC_FLAGS_INPUT_970) {
367         /* 970 gets a U3 bus */
368         pci_bus = pci_pmac_u3_init(pic, get_system_memory(), get_system_io());
369         machine_arch = ARCH_MAC99_U3;
370     } else {
371         pci_bus = pci_pmac_init(pic, get_system_memory(), get_system_io());
372         machine_arch = ARCH_MAC99;
373     }
374     object_property_set_bool(OBJECT(pci_bus), true, "realized", &error_abort);
375 
376     machine->usb |= defaults_enabled() && !machine->usb_disabled;
377 
378     /* Timebase Frequency */
379     if (kvm_enabled()) {
380         tbfreq = kvmppc_get_tbfreq();
381     } else {
382         tbfreq = TBFREQ;
383     }
384 
385     /* init basic PC hardware */
386     escc_mem = escc_init(0, pic[0x25], pic[0x24],
387                          serial_hds[0], serial_hds[1], ESCC_CLOCK, 4);
388     memory_region_init_alias(escc_bar, NULL, "escc-bar",
389                              escc_mem, 0, memory_region_size(escc_mem));
390 
391     macio = pci_create(pci_bus, -1, TYPE_NEWWORLD_MACIO);
392     dev = DEVICE(macio);
393     qdev_connect_gpio_out(dev, 0, pic[0x19]); /* CUDA */
394     qdev_connect_gpio_out(dev, 1, pic[0x0d]); /* IDE */
395     qdev_connect_gpio_out(dev, 2, pic[0x02]); /* IDE DMA */
396     qdev_connect_gpio_out(dev, 3, pic[0x0e]); /* IDE */
397     qdev_connect_gpio_out(dev, 4, pic[0x03]); /* IDE DMA */
398     qdev_prop_set_uint64(dev, "frequency", tbfreq);
399     macio_init(macio, pic_mem, escc_bar);
400 
401     /* We only emulate 2 out of 3 IDE controllers for now */
402     ide_drive_get(hd, ARRAY_SIZE(hd));
403 
404     macio_ide = MACIO_IDE(object_resolve_path_component(OBJECT(macio),
405                                                         "ide[0]"));
406     macio_ide_init_drives(macio_ide, hd);
407 
408     macio_ide = MACIO_IDE(object_resolve_path_component(OBJECT(macio),
409                                                         "ide[1]"));
410     macio_ide_init_drives(macio_ide, &hd[MAX_IDE_DEVS]);
411 
412     dev = DEVICE(object_resolve_path_component(OBJECT(macio), "cuda"));
413     adb_bus = qdev_get_child_bus(dev, "adb.0");
414     dev = qdev_create(adb_bus, TYPE_ADB_KEYBOARD);
415     qdev_init_nofail(dev);
416     dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
417     qdev_init_nofail(dev);
418 
419     if (machine->usb) {
420         pci_create_simple(pci_bus, -1, "pci-ohci");
421 
422         /* U3 needs to use USB for input because Linux doesn't support via-cuda
423         on PPC64 */
424         if (machine_arch == ARCH_MAC99_U3) {
425             USBBus *usb_bus = usb_bus_find(-1);
426 
427             usb_create_simple(usb_bus, "usb-kbd");
428             usb_create_simple(usb_bus, "usb-mouse");
429         }
430     }
431 
432     pci_vga_init(pci_bus);
433 
434     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8) {
435         graphic_depth = 15;
436     }
437 
438     for (i = 0; i < nb_nics; i++) {
439         pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL);
440     }
441 
442     /* The NewWorld NVRAM is not located in the MacIO device */
443 #ifdef CONFIG_KVM
444     if (kvm_enabled() && getpagesize() > 4096) {
445         /* We can't combine read-write and read-only in a single page, so
446            move the NVRAM out of ROM again for KVM */
447         nvram_addr = 0xFFE00000;
448     }
449 #endif
450     dev = qdev_create(NULL, TYPE_MACIO_NVRAM);
451     qdev_prop_set_uint32(dev, "size", 0x2000);
452     qdev_prop_set_uint32(dev, "it_shift", 1);
453     qdev_init_nofail(dev);
454     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, nvram_addr);
455     nvr = MACIO_NVRAM(dev);
456     pmac_format_nvram_partition(nvr, 0x2000);
457     /* No PCI init: the BIOS will do it */
458 
459     fw_cfg = fw_cfg_init_mem(CFG_ADDR, CFG_ADDR + 2);
460     fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
461     fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
462     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
463     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, machine_arch);
464     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
465     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
466     if (kernel_cmdline) {
467         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, cmdline_base);
468         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, kernel_cmdline);
469     } else {
470         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
471     }
472     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
473     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
474     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
475 
476     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
477     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
478     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
479 
480     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled());
481     if (kvm_enabled()) {
482 #ifdef CONFIG_KVM
483         uint8_t *hypercall;
484 
485         hypercall = g_malloc(16);
486         kvmppc_get_hypercall(env, hypercall, 16);
487         fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);
488         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());
489 #endif
490     }
491     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, tbfreq);
492     /* Mac OS X requires a "known good" clock-frequency value; pass it one. */
493     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_CLOCKFREQ, CLOCKFREQ);
494     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_BUSFREQ, BUSFREQ);
495     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_NVRAM_ADDR, nvram_addr);
496 
497     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
498 }
499 
500 static int core99_kvm_type(const char *arg)
501 {
502     /* Always force PR KVM */
503     return 2;
504 }
505 
506 static void core99_machine_class_init(ObjectClass *oc, void *data)
507 {
508     MachineClass *mc = MACHINE_CLASS(oc);
509 
510     mc->desc = "Mac99 based PowerMAC";
511     mc->init = ppc_core99_init;
512     mc->block_default_type = IF_IDE;
513     mc->max_cpus = MAX_CPUS;
514     mc->default_boot_order = "cd";
515     mc->kvm_type = core99_kvm_type;
516 }
517 
518 static const TypeInfo core99_machine_info = {
519     .name          = MACHINE_TYPE_NAME("mac99"),
520     .parent        = TYPE_MACHINE,
521     .class_init    = core99_machine_class_init,
522 };
523 
524 static void mac_machine_register_types(void)
525 {
526     type_register_static(&core99_machine_info);
527 }
528 
529 type_init(mac_machine_register_types)
530