petalogix-ml605: added SPI controller with n25q128
[qemu-kvm.git] / hw / ppc_prep.c
blob15444303e4b32b8af956591756628b4cec7d595a
1 /*
2 * QEMU PPC PREP hardware System Emulator
4 * Copyright (c) 2003-2007 Jocelyn Mayer
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
24 #include "hw.h"
25 #include "nvram.h"
26 #include "pc.h"
27 #include "fdc.h"
28 #include "net.h"
29 #include "sysemu.h"
30 #include "isa.h"
31 #include "pci.h"
32 #include "pci_host.h"
33 #include "ppc.h"
34 #include "boards.h"
35 #include "qemu-log.h"
36 #include "ide.h"
37 #include "loader.h"
38 #include "mc146818rtc.h"
39 #include "blockdev.h"
40 #include "arch_init.h"
41 #include "exec-memory.h"
43 //#define HARD_DEBUG_PPC_IO
44 //#define DEBUG_PPC_IO
46 /* SMP is not enabled, for now */
47 #define MAX_CPUS 1
49 #define MAX_IDE_BUS 2
51 #define BIOS_SIZE (1024 * 1024)
52 #define BIOS_FILENAME "ppc_rom.bin"
53 #define KERNEL_LOAD_ADDR 0x01000000
54 #define INITRD_LOAD_ADDR 0x01800000
56 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
57 #define DEBUG_PPC_IO
58 #endif
60 #if defined (HARD_DEBUG_PPC_IO)
61 #define PPC_IO_DPRINTF(fmt, ...) \
62 do { \
63 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
64 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
65 } else { \
66 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
67 } \
68 } while (0)
69 #elif defined (DEBUG_PPC_IO)
70 #define PPC_IO_DPRINTF(fmt, ...) \
71 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
72 #else
73 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
74 #endif
76 /* Constants for devices init */
77 static const int ide_iobase[2] = { 0x1f0, 0x170 };
78 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
79 static const int ide_irq[2] = { 13, 13 };
81 #define NE2000_NB_MAX 6
83 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
84 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
86 /* ISA IO ports bridge */
87 #define PPC_IO_BASE 0x80000000
89 /* PowerPC control and status registers */
90 #if 0 // Not used
91 static struct {
92 /* IDs */
93 uint32_t veni_devi;
94 uint32_t revi;
95 /* Control and status */
96 uint32_t gcsr;
97 uint32_t xcfr;
98 uint32_t ct32;
99 uint32_t mcsr;
100 /* General purpose registers */
101 uint32_t gprg[6];
102 /* Exceptions */
103 uint32_t feen;
104 uint32_t fest;
105 uint32_t fema;
106 uint32_t fecl;
107 uint32_t eeen;
108 uint32_t eest;
109 uint32_t eecl;
110 uint32_t eeint;
111 uint32_t eemck0;
112 uint32_t eemck1;
113 /* Error diagnostic */
114 } XCSR;
116 static void PPC_XCSR_writeb (void *opaque,
117 target_phys_addr_t addr, uint32_t value)
119 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
120 value);
123 static void PPC_XCSR_writew (void *opaque,
124 target_phys_addr_t addr, uint32_t value)
126 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
127 value);
130 static void PPC_XCSR_writel (void *opaque,
131 target_phys_addr_t addr, uint32_t value)
133 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
134 value);
137 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
139 uint32_t retval = 0;
141 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
142 retval);
144 return retval;
147 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
149 uint32_t retval = 0;
151 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
152 retval);
154 return retval;
157 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
159 uint32_t retval = 0;
161 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
162 retval);
164 return retval;
167 static const MemoryRegionOps PPC_XCSR_ops = {
168 .old_mmio = {
169 .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, },
170 .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, },
172 .endianness = DEVICE_LITTLE_ENDIAN,
175 #endif
177 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
178 typedef struct sysctrl_t {
179 qemu_irq reset_irq;
180 M48t59State *nvram;
181 uint8_t state;
182 uint8_t syscontrol;
183 uint8_t fake_io[2];
184 int contiguous_map;
185 int endian;
186 } sysctrl_t;
188 enum {
189 STATE_HARDFILE = 0x01,
192 static sysctrl_t *sysctrl;
194 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
196 sysctrl_t *sysctrl = opaque;
198 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
199 val);
200 sysctrl->fake_io[addr - 0x0398] = val;
203 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
205 sysctrl_t *sysctrl = opaque;
207 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
208 sysctrl->fake_io[addr - 0x0398]);
209 return sysctrl->fake_io[addr - 0x0398];
212 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
214 sysctrl_t *sysctrl = opaque;
216 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
217 addr - PPC_IO_BASE, val);
218 switch (addr) {
219 case 0x0092:
220 /* Special port 92 */
221 /* Check soft reset asked */
222 if (val & 0x01) {
223 qemu_irq_raise(sysctrl->reset_irq);
224 } else {
225 qemu_irq_lower(sysctrl->reset_irq);
227 /* Check LE mode */
228 if (val & 0x02) {
229 sysctrl->endian = 1;
230 } else {
231 sysctrl->endian = 0;
233 break;
234 case 0x0800:
235 /* Motorola CPU configuration register : read-only */
236 break;
237 case 0x0802:
238 /* Motorola base module feature register : read-only */
239 break;
240 case 0x0803:
241 /* Motorola base module status register : read-only */
242 break;
243 case 0x0808:
244 /* Hardfile light register */
245 if (val & 1)
246 sysctrl->state |= STATE_HARDFILE;
247 else
248 sysctrl->state &= ~STATE_HARDFILE;
249 break;
250 case 0x0810:
251 /* Password protect 1 register */
252 if (sysctrl->nvram != NULL)
253 m48t59_toggle_lock(sysctrl->nvram, 1);
254 break;
255 case 0x0812:
256 /* Password protect 2 register */
257 if (sysctrl->nvram != NULL)
258 m48t59_toggle_lock(sysctrl->nvram, 2);
259 break;
260 case 0x0814:
261 /* L2 invalidate register */
262 // tlb_flush(first_cpu, 1);
263 break;
264 case 0x081C:
265 /* system control register */
266 sysctrl->syscontrol = val & 0x0F;
267 break;
268 case 0x0850:
269 /* I/O map type register */
270 sysctrl->contiguous_map = val & 0x01;
271 break;
272 default:
273 printf("ERROR: unaffected IO port write: %04" PRIx32
274 " => %02" PRIx32"\n", addr, val);
275 break;
279 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
281 sysctrl_t *sysctrl = opaque;
282 uint32_t retval = 0xFF;
284 switch (addr) {
285 case 0x0092:
286 /* Special port 92 */
287 retval = 0x00;
288 break;
289 case 0x0800:
290 /* Motorola CPU configuration register */
291 retval = 0xEF; /* MPC750 */
292 break;
293 case 0x0802:
294 /* Motorola Base module feature register */
295 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
296 break;
297 case 0x0803:
298 /* Motorola base module status register */
299 retval = 0xE0; /* Standard MPC750 */
300 break;
301 case 0x080C:
302 /* Equipment present register:
303 * no L2 cache
304 * no upgrade processor
305 * no cards in PCI slots
306 * SCSI fuse is bad
308 retval = 0x3C;
309 break;
310 case 0x0810:
311 /* Motorola base module extended feature register */
312 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
313 break;
314 case 0x0814:
315 /* L2 invalidate: don't care */
316 break;
317 case 0x0818:
318 /* Keylock */
319 retval = 0x00;
320 break;
321 case 0x081C:
322 /* system control register
323 * 7 - 6 / 1 - 0: L2 cache enable
325 retval = sysctrl->syscontrol;
326 break;
327 case 0x0823:
328 /* */
329 retval = 0x03; /* no L2 cache */
330 break;
331 case 0x0850:
332 /* I/O map type register */
333 retval = sysctrl->contiguous_map;
334 break;
335 default:
336 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
337 break;
339 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
340 addr - PPC_IO_BASE, retval);
342 return retval;
345 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
346 target_phys_addr_t addr)
348 if (sysctrl->contiguous_map == 0) {
349 /* 64 KB contiguous space for IOs */
350 addr &= 0xFFFF;
351 } else {
352 /* 8 MB non-contiguous space for IOs */
353 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
356 return addr;
359 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
360 uint32_t value)
362 sysctrl_t *sysctrl = opaque;
364 addr = prep_IO_address(sysctrl, addr);
365 cpu_outb(addr, value);
368 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
370 sysctrl_t *sysctrl = opaque;
371 uint32_t ret;
373 addr = prep_IO_address(sysctrl, addr);
374 ret = cpu_inb(addr);
376 return ret;
379 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
380 uint32_t value)
382 sysctrl_t *sysctrl = opaque;
384 addr = prep_IO_address(sysctrl, addr);
385 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
386 cpu_outw(addr, value);
389 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
391 sysctrl_t *sysctrl = opaque;
392 uint32_t ret;
394 addr = prep_IO_address(sysctrl, addr);
395 ret = cpu_inw(addr);
396 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
398 return ret;
401 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
402 uint32_t value)
404 sysctrl_t *sysctrl = opaque;
406 addr = prep_IO_address(sysctrl, addr);
407 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
408 cpu_outl(addr, value);
411 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
413 sysctrl_t *sysctrl = opaque;
414 uint32_t ret;
416 addr = prep_IO_address(sysctrl, addr);
417 ret = cpu_inl(addr);
418 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
420 return ret;
423 static const MemoryRegionOps PPC_prep_io_ops = {
424 .old_mmio = {
425 .read = { PPC_prep_io_readb, PPC_prep_io_readw, PPC_prep_io_readl },
426 .write = { PPC_prep_io_writeb, PPC_prep_io_writew, PPC_prep_io_writel },
428 .endianness = DEVICE_LITTLE_ENDIAN,
431 #define NVRAM_SIZE 0x2000
433 static void cpu_request_exit(void *opaque, int irq, int level)
435 CPUPPCState *env = cpu_single_env;
437 if (env && level) {
438 cpu_exit(env);
442 static void ppc_prep_reset(void *opaque)
444 PowerPCCPU *cpu = opaque;
446 cpu_reset(CPU(cpu));
449 /* PowerPC PREP hardware initialisation */
450 static void ppc_prep_init (ram_addr_t ram_size,
451 const char *boot_device,
452 const char *kernel_filename,
453 const char *kernel_cmdline,
454 const char *initrd_filename,
455 const char *cpu_model)
457 MemoryRegion *sysmem = get_system_memory();
458 PowerPCCPU *cpu = NULL;
459 CPUPPCState *env = NULL;
460 char *filename;
461 nvram_t nvram;
462 M48t59State *m48t59;
463 MemoryRegion *PPC_io_memory = g_new(MemoryRegion, 1);
464 #if 0
465 MemoryRegion *xcsr = g_new(MemoryRegion, 1);
466 #endif
467 int linux_boot, i, nb_nics1, bios_size;
468 MemoryRegion *ram = g_new(MemoryRegion, 1);
469 MemoryRegion *bios = g_new(MemoryRegion, 1);
470 uint32_t kernel_base, initrd_base;
471 long kernel_size, initrd_size;
472 DeviceState *dev;
473 PCIHostState *pcihost;
474 PCIBus *pci_bus;
475 PCIDevice *pci;
476 ISABus *isa_bus;
477 qemu_irq *cpu_exit_irq;
478 int ppc_boot_device;
479 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
480 DriveInfo *fd[MAX_FD];
482 sysctrl = g_malloc0(sizeof(sysctrl_t));
484 linux_boot = (kernel_filename != NULL);
486 /* init CPUs */
487 if (cpu_model == NULL)
488 cpu_model = "602";
489 for (i = 0; i < smp_cpus; i++) {
490 cpu = cpu_ppc_init(cpu_model);
491 if (cpu == NULL) {
492 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
493 exit(1);
495 env = &cpu->env;
497 if (env->flags & POWERPC_FLAG_RTC_CLK) {
498 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
499 cpu_ppc_tb_init(env, 7812500UL);
500 } else {
501 /* Set time-base frequency to 100 Mhz */
502 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
504 qemu_register_reset(ppc_prep_reset, cpu);
507 /* allocate RAM */
508 memory_region_init_ram(ram, "ppc_prep.ram", ram_size);
509 vmstate_register_ram_global(ram);
510 memory_region_add_subregion(sysmem, 0, ram);
512 /* allocate and load BIOS */
513 memory_region_init_ram(bios, "ppc_prep.bios", BIOS_SIZE);
514 memory_region_set_readonly(bios, true);
515 memory_region_add_subregion(sysmem, (uint32_t)(-BIOS_SIZE), bios);
516 vmstate_register_ram_global(bios);
517 if (bios_name == NULL)
518 bios_name = BIOS_FILENAME;
519 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
520 if (filename) {
521 bios_size = get_image_size(filename);
522 } else {
523 bios_size = -1;
525 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
526 target_phys_addr_t bios_addr;
527 bios_size = (bios_size + 0xfff) & ~0xfff;
528 bios_addr = (uint32_t)(-bios_size);
529 bios_size = load_image_targphys(filename, bios_addr, bios_size);
531 if (bios_size < 0 || bios_size > BIOS_SIZE) {
532 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
534 if (filename) {
535 g_free(filename);
538 if (linux_boot) {
539 kernel_base = KERNEL_LOAD_ADDR;
540 /* now we can load the kernel */
541 kernel_size = load_image_targphys(kernel_filename, kernel_base,
542 ram_size - kernel_base);
543 if (kernel_size < 0) {
544 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
545 exit(1);
547 /* load initrd */
548 if (initrd_filename) {
549 initrd_base = INITRD_LOAD_ADDR;
550 initrd_size = load_image_targphys(initrd_filename, initrd_base,
551 ram_size - initrd_base);
552 if (initrd_size < 0) {
553 hw_error("qemu: could not load initial ram disk '%s'\n",
554 initrd_filename);
556 } else {
557 initrd_base = 0;
558 initrd_size = 0;
560 ppc_boot_device = 'm';
561 } else {
562 kernel_base = 0;
563 kernel_size = 0;
564 initrd_base = 0;
565 initrd_size = 0;
566 ppc_boot_device = '\0';
567 /* For now, OHW cannot boot from the network. */
568 for (i = 0; boot_device[i] != '\0'; i++) {
569 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
570 ppc_boot_device = boot_device[i];
571 break;
574 if (ppc_boot_device == '\0') {
575 fprintf(stderr, "No valid boot device for Mac99 machine\n");
576 exit(1);
580 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
581 hw_error("Only 6xx bus is supported on PREP machine\n");
584 dev = qdev_create(NULL, "raven-pcihost");
585 pcihost = PCI_HOST_BRIDGE(dev);
586 pcihost->address_space = get_system_memory();
587 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
588 qdev_init_nofail(dev);
589 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
590 if (pci_bus == NULL) {
591 fprintf(stderr, "Couldn't create PCI host controller.\n");
592 exit(1);
595 /* PCI -> ISA bridge */
596 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
597 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
598 qdev_connect_gpio_out(&pci->qdev, 0,
599 first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
600 qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq);
601 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
602 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
603 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
604 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
605 isa_bus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&pci->qdev, "isa.0"));
607 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
608 memory_region_init_io(PPC_io_memory, &PPC_prep_io_ops, sysctrl,
609 "ppc-io", 0x00800000);
610 memory_region_add_subregion(sysmem, 0x80000000, PPC_io_memory);
612 /* init basic PC hardware */
613 pci_vga_init(pci_bus);
615 if (serial_hds[0])
616 serial_isa_init(isa_bus, 0, serial_hds[0]);
617 nb_nics1 = nb_nics;
618 if (nb_nics1 > NE2000_NB_MAX)
619 nb_nics1 = NE2000_NB_MAX;
620 for(i = 0; i < nb_nics1; i++) {
621 if (nd_table[i].model == NULL) {
622 nd_table[i].model = g_strdup("ne2k_isa");
624 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
625 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
626 &nd_table[i]);
627 } else {
628 pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
632 ide_drive_get(hd, MAX_IDE_BUS);
633 for(i = 0; i < MAX_IDE_BUS; i++) {
634 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
635 hd[2 * i],
636 hd[2 * i + 1]);
638 isa_create_simple(isa_bus, "i8042");
640 // SB16_init();
642 for(i = 0; i < MAX_FD; i++) {
643 fd[i] = drive_get(IF_FLOPPY, 0, i);
645 fdctrl_init_isa(isa_bus, fd);
647 /* Register fake IO ports for PREP */
648 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
649 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
650 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
651 /* System control ports */
652 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
653 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
654 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
655 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
656 /* PowerPC control and status register group */
657 #if 0
658 memory_region_init_io(xcsr, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
659 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
660 #endif
662 if (usb_enabled) {
663 pci_create_simple(pci_bus, -1, "pci-ohci");
666 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
667 if (m48t59 == NULL)
668 return;
669 sysctrl->nvram = m48t59;
671 /* Initialise NVRAM */
672 nvram.opaque = m48t59;
673 nvram.read_fn = &m48t59_read;
674 nvram.write_fn = &m48t59_write;
675 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
676 kernel_base, kernel_size,
677 kernel_cmdline,
678 initrd_base, initrd_size,
679 /* XXX: need an option to load a NVRAM image */
681 graphic_width, graphic_height, graphic_depth);
683 /* Special port to get debug messages from Open-Firmware */
684 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
686 /* Initialize audio subsystem */
687 audio_init(isa_bus, pci_bus);
690 static QEMUMachine prep_machine = {
691 .name = "prep",
692 .desc = "PowerPC PREP platform",
693 .init = ppc_prep_init,
694 .max_cpus = MAX_CPUS,
697 static void prep_machine_init(void)
699 qemu_register_machine(&prep_machine);
702 machine_init(prep_machine_init);