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
36 //#define HARD_DEBUG_PPC_IO
37 //#define DEBUG_PPC_IO
39 /* SMP is not enabled, for now */
44 #define BIOS_SIZE (1024 * 1024)
45 #define BIOS_FILENAME "ppc_rom.bin"
46 #define KERNEL_LOAD_ADDR 0x01000000
47 #define INITRD_LOAD_ADDR 0x01800000
49 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
53 #if defined (HARD_DEBUG_PPC_IO)
54 #define PPC_IO_DPRINTF(fmt, ...) \
56 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
57 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
59 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
62 #elif defined (DEBUG_PPC_IO)
63 #define PPC_IO_DPRINTF(fmt, ...) \
64 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
66 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
69 /* Constants for devices init */
70 static const int ide_iobase[2] = { 0x1f0, 0x170 };
71 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
72 static const int ide_irq[2] = { 13, 13 };
74 #define NE2000_NB_MAX 6
76 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
77 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
79 //static PITState *pit;
81 /* ISA IO ports bridge */
82 #define PPC_IO_BASE 0x80000000
85 /* Speaker port 0x61 */
86 static int speaker_data_on;
87 static int dummy_refresh_clock;
90 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
93 speaker_data_on = (val >> 1) & 1;
94 pit_set_gate(pit, 2, val & 1);
98 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
102 out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
103 dummy_refresh_clock ^= 1;
104 return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
105 (dummy_refresh_clock << 4);
110 /* PCI intack register */
111 /* Read-only register (?) */
112 static void _PPC_intack_write (void *opaque,
113 target_phys_addr_t addr, uint32_t value)
116 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
121 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr)
125 if ((addr & 0xf) == 0)
126 retval = pic_intack_read(isa_pic);
128 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
135 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
137 return _PPC_intack_read(addr);
140 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
142 #ifdef TARGET_WORDS_BIGENDIAN
143 return bswap16(_PPC_intack_read(addr));
145 return _PPC_intack_read(addr);
149 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
151 #ifdef TARGET_WORDS_BIGENDIAN
152 return bswap32(_PPC_intack_read(addr));
154 return _PPC_intack_read(addr);
158 static CPUWriteMemoryFunc * const PPC_intack_write[] = {
164 static CPUReadMemoryFunc * const PPC_intack_read[] = {
170 /* PowerPC control and status registers */
176 /* Control and status */
181 /* General purpose registers */
194 /* Error diagnostic */
197 static void PPC_XCSR_writeb (void *opaque,
198 target_phys_addr_t addr, uint32_t value)
200 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
204 static void PPC_XCSR_writew (void *opaque,
205 target_phys_addr_t addr, uint32_t value)
207 #ifdef TARGET_WORDS_BIGENDIAN
208 value = bswap16(value);
210 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
214 static void PPC_XCSR_writel (void *opaque,
215 target_phys_addr_t addr, uint32_t value)
217 #ifdef TARGET_WORDS_BIGENDIAN
218 value = bswap32(value);
220 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
224 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
228 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
234 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
238 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
240 #ifdef TARGET_WORDS_BIGENDIAN
241 retval = bswap16(retval);
247 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
251 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
253 #ifdef TARGET_WORDS_BIGENDIAN
254 retval = bswap32(retval);
260 static CPUWriteMemoryFunc * const PPC_XCSR_write[] = {
266 static CPUReadMemoryFunc * const PPC_XCSR_read[] = {
273 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
274 typedef struct sysctrl_t {
285 STATE_HARDFILE = 0x01,
288 static sysctrl_t *sysctrl;
290 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
292 sysctrl_t *sysctrl = opaque;
294 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
296 sysctrl->fake_io[addr - 0x0398] = val;
299 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
301 sysctrl_t *sysctrl = opaque;
303 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
304 sysctrl->fake_io[addr - 0x0398]);
305 return sysctrl->fake_io[addr - 0x0398];
308 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
310 sysctrl_t *sysctrl = opaque;
312 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
313 addr - PPC_IO_BASE, val);
316 /* Special port 92 */
317 /* Check soft reset asked */
319 qemu_irq_raise(sysctrl->reset_irq);
321 qemu_irq_lower(sysctrl->reset_irq);
331 /* Motorola CPU configuration register : read-only */
334 /* Motorola base module feature register : read-only */
337 /* Motorola base module status register : read-only */
340 /* Hardfile light register */
342 sysctrl->state |= STATE_HARDFILE;
344 sysctrl->state &= ~STATE_HARDFILE;
347 /* Password protect 1 register */
348 if (sysctrl->nvram != NULL)
349 m48t59_toggle_lock(sysctrl->nvram, 1);
352 /* Password protect 2 register */
353 if (sysctrl->nvram != NULL)
354 m48t59_toggle_lock(sysctrl->nvram, 2);
357 /* L2 invalidate register */
358 // tlb_flush(first_cpu, 1);
361 /* system control register */
362 sysctrl->syscontrol = val & 0x0F;
365 /* I/O map type register */
366 sysctrl->contiguous_map = val & 0x01;
369 printf("ERROR: unaffected IO port write: %04" PRIx32
370 " => %02" PRIx32"\n", addr, val);
375 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
377 sysctrl_t *sysctrl = opaque;
378 uint32_t retval = 0xFF;
382 /* Special port 92 */
386 /* Motorola CPU configuration register */
387 retval = 0xEF; /* MPC750 */
390 /* Motorola Base module feature register */
391 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
394 /* Motorola base module status register */
395 retval = 0xE0; /* Standard MPC750 */
398 /* Equipment present register:
400 * no upgrade processor
401 * no cards in PCI slots
407 /* Motorola base module extended feature register */
408 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
411 /* L2 invalidate: don't care */
418 /* system control register
419 * 7 - 6 / 1 - 0: L2 cache enable
421 retval = sysctrl->syscontrol;
425 retval = 0x03; /* no L2 cache */
428 /* I/O map type register */
429 retval = sysctrl->contiguous_map;
432 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
435 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
436 addr - PPC_IO_BASE, retval);
441 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
442 target_phys_addr_t addr)
444 if (sysctrl->contiguous_map == 0) {
445 /* 64 KB contiguous space for IOs */
448 /* 8 MB non-contiguous space for IOs */
449 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
455 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
458 sysctrl_t *sysctrl = opaque;
460 addr = prep_IO_address(sysctrl, addr);
461 cpu_outb(NULL, addr, value);
464 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
466 sysctrl_t *sysctrl = opaque;
469 addr = prep_IO_address(sysctrl, addr);
470 ret = cpu_inb(NULL, addr);
475 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
478 sysctrl_t *sysctrl = opaque;
480 addr = prep_IO_address(sysctrl, addr);
481 #ifdef TARGET_WORDS_BIGENDIAN
482 value = bswap16(value);
484 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
485 cpu_outw(NULL, addr, value);
488 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
490 sysctrl_t *sysctrl = opaque;
493 addr = prep_IO_address(sysctrl, addr);
494 ret = cpu_inw(NULL, addr);
495 #ifdef TARGET_WORDS_BIGENDIAN
498 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
503 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
506 sysctrl_t *sysctrl = opaque;
508 addr = prep_IO_address(sysctrl, addr);
509 #ifdef TARGET_WORDS_BIGENDIAN
510 value = bswap32(value);
512 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
513 cpu_outl(NULL, addr, value);
516 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
518 sysctrl_t *sysctrl = opaque;
521 addr = prep_IO_address(sysctrl, addr);
522 ret = cpu_inl(NULL, addr);
523 #ifdef TARGET_WORDS_BIGENDIAN
526 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
531 static CPUWriteMemoryFunc * const PPC_prep_io_write[] = {
537 static CPUReadMemoryFunc * const PPC_prep_io_read[] = {
543 #define NVRAM_SIZE 0x2000
545 /* PowerPC PREP hardware initialisation */
546 static void ppc_prep_init (ram_addr_t ram_size,
547 const char *boot_device,
548 const char *kernel_filename,
549 const char *kernel_cmdline,
550 const char *initrd_filename,
551 const char *cpu_model)
553 CPUState *env = NULL, *envs[MAX_CPUS];
558 int linux_boot, i, nb_nics1, bios_size;
559 ram_addr_t ram_offset, bios_offset;
560 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
565 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
566 BlockDriverState *fd[MAX_FD];
568 sysctrl = qemu_mallocz(sizeof(sysctrl_t));
570 linux_boot = (kernel_filename != NULL);
573 if (cpu_model == NULL)
574 cpu_model = "default";
575 for (i = 0; i < smp_cpus; i++) {
576 env = cpu_init(cpu_model);
578 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
581 if (env->flags & POWERPC_FLAG_RTC_CLK) {
582 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
583 cpu_ppc_tb_init(env, 7812500UL);
585 /* Set time-base frequency to 100 Mhz */
586 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
588 qemu_register_reset(&cpu_ppc_reset, env);
593 ram_offset = qemu_ram_alloc(ram_size);
594 cpu_register_physical_memory(0, ram_size, ram_offset);
596 /* allocate and load BIOS */
597 bios_offset = qemu_ram_alloc(BIOS_SIZE);
598 if (bios_name == NULL)
599 bios_name = BIOS_FILENAME;
600 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
602 bios_size = get_image_size(filename);
606 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
607 target_phys_addr_t bios_addr;
608 bios_size = (bios_size + 0xfff) & ~0xfff;
609 bios_addr = (uint32_t)(-bios_size);
610 cpu_register_physical_memory(bios_addr, bios_size,
611 bios_offset | IO_MEM_ROM);
612 bios_size = load_image_targphys(filename, bios_addr, bios_size);
614 if (bios_size < 0 || bios_size > BIOS_SIZE) {
615 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
620 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
621 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
625 kernel_base = KERNEL_LOAD_ADDR;
626 /* now we can load the kernel */
627 kernel_size = load_image_targphys(kernel_filename, kernel_base,
628 ram_size - kernel_base);
629 if (kernel_size < 0) {
630 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
634 if (initrd_filename) {
635 initrd_base = INITRD_LOAD_ADDR;
636 initrd_size = load_image_targphys(initrd_filename, initrd_base,
637 ram_size - initrd_base);
638 if (initrd_size < 0) {
639 hw_error("qemu: could not load initial ram disk '%s'\n",
646 ppc_boot_device = 'm';
652 ppc_boot_device = '\0';
653 /* For now, OHW cannot boot from the network. */
654 for (i = 0; boot_device[i] != '\0'; i++) {
655 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
656 ppc_boot_device = boot_device[i];
660 if (ppc_boot_device == '\0') {
661 fprintf(stderr, "No valid boot device for Mac99 machine\n");
666 isa_mem_base = 0xc0000000;
667 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
668 hw_error("Only 6xx bus is supported on PREP machine\n");
670 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
671 pci_bus = pci_prep_init(i8259);
672 // pci_bus = i440fx_init();
673 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
674 PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
675 PPC_prep_io_write, sysctrl);
676 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
678 /* init basic PC hardware */
679 pci_vga_init(pci_bus, 0, 0);
680 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
681 // pit = pit_init(0x40, i8259[0]);
682 rtc_init(0x70, i8259[8], 2000);
684 serial_init(0x3f8, i8259[4], 115200, serial_hds[0]);
686 if (nb_nics1 > NE2000_NB_MAX)
687 nb_nics1 = NE2000_NB_MAX;
688 for(i = 0; i < nb_nics1; i++) {
689 if (nd_table[i].model == NULL) {
690 nd_table[i].model = "ne2k_isa";
692 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
693 isa_ne2000_init(ne2000_io[i], i8259[ne2000_irq[i]], &nd_table[i]);
695 pci_nic_init(&nd_table[i], "ne2k_pci", NULL);
699 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
700 fprintf(stderr, "qemu: too many IDE bus\n");
704 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
705 dinfo = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
706 hd[i] = dinfo ? dinfo->bdrv : NULL;
709 for(i = 0; i < MAX_IDE_BUS; i++) {
710 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
714 i8042_init(i8259[1], i8259[12], 0x60);
718 for(i = 0; i < MAX_FD; i++) {
719 dinfo = drive_get(IF_FLOPPY, 0, i);
720 fd[i] = dinfo ? dinfo->bdrv : NULL;
722 fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
724 /* Register speaker port */
725 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
726 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
727 /* Register fake IO ports for PREP */
728 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
729 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
730 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
731 /* System control ports */
732 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
733 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
734 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
735 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
736 /* PCI intack location */
737 PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
738 PPC_intack_write, NULL);
739 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
740 /* PowerPC control and status register group */
742 PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
744 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
748 usb_ohci_init_pci(pci_bus, 3, -1);
751 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
754 sysctrl->nvram = m48t59;
756 /* Initialise NVRAM */
757 nvram.opaque = m48t59;
758 nvram.read_fn = &m48t59_read;
759 nvram.write_fn = &m48t59_write;
760 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
761 kernel_base, kernel_size,
763 initrd_base, initrd_size,
764 /* XXX: need an option to load a NVRAM image */
766 graphic_width, graphic_height, graphic_depth);
768 /* Special port to get debug messages from Open-Firmware */
769 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
772 static QEMUMachine prep_machine = {
774 .desc = "PowerPC PREP platform",
775 .init = ppc_prep_init,
776 .max_cpus = MAX_CPUS,
779 static void prep_machine_init(void)
781 qemu_register_machine(&prep_machine);
784 machine_init(prep_machine_init);