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
39 #include "mc146818rtc.h"
41 //#define HARD_DEBUG_PPC_IO
42 //#define DEBUG_PPC_IO
44 /* SMP is not enabled, for now */
49 #define BIOS_SIZE (1024 * 1024)
50 #define BIOS_FILENAME "ppc_rom.bin"
51 #define KERNEL_LOAD_ADDR 0x01000000
52 #define INITRD_LOAD_ADDR 0x01800000
54 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
58 #if defined (HARD_DEBUG_PPC_IO)
59 #define PPC_IO_DPRINTF(fmt, ...) \
61 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
62 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
64 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
67 #elif defined (DEBUG_PPC_IO)
68 #define PPC_IO_DPRINTF(fmt, ...) \
69 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
71 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
74 /* Constants for devices init */
75 static const int ide_iobase[2] = { 0x1f0, 0x170 };
76 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
77 static const int ide_irq[2] = { 13, 13 };
79 #define NE2000_NB_MAX 6
81 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
82 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
84 //static PITState *pit;
86 /* ISA IO ports bridge */
87 #define PPC_IO_BASE 0x80000000
90 /* Speaker port 0x61 */
91 static int speaker_data_on;
92 static int dummy_refresh_clock;
95 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
98 speaker_data_on = (val >> 1) & 1;
99 pit_set_gate(pit, 2, val & 1);
103 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
107 out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
108 dummy_refresh_clock ^= 1;
109 return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
110 (dummy_refresh_clock << 4);
115 /* PCI intack register */
116 /* Read-only register (?) */
117 static void _PPC_intack_write (void *opaque,
118 target_phys_addr_t addr, uint32_t value)
121 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
126 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr)
130 if ((addr & 0xf) == 0)
131 retval = pic_intack_read(isa_pic);
133 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
140 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
142 return _PPC_intack_read(addr);
145 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
147 #ifdef TARGET_WORDS_BIGENDIAN
148 return bswap16(_PPC_intack_read(addr));
150 return _PPC_intack_read(addr);
154 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
156 #ifdef TARGET_WORDS_BIGENDIAN
157 return bswap32(_PPC_intack_read(addr));
159 return _PPC_intack_read(addr);
163 static CPUWriteMemoryFunc * const PPC_intack_write[] = {
169 static CPUReadMemoryFunc * const PPC_intack_read[] = {
175 /* PowerPC control and status registers */
181 /* Control and status */
186 /* General purpose registers */
199 /* Error diagnostic */
202 static void PPC_XCSR_writeb (void *opaque,
203 target_phys_addr_t addr, uint32_t value)
205 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
209 static void PPC_XCSR_writew (void *opaque,
210 target_phys_addr_t addr, uint32_t value)
212 #ifdef TARGET_WORDS_BIGENDIAN
213 value = bswap16(value);
215 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
219 static void PPC_XCSR_writel (void *opaque,
220 target_phys_addr_t addr, uint32_t value)
222 #ifdef TARGET_WORDS_BIGENDIAN
223 value = bswap32(value);
225 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
229 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
233 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
239 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
243 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
245 #ifdef TARGET_WORDS_BIGENDIAN
246 retval = bswap16(retval);
252 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
256 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
258 #ifdef TARGET_WORDS_BIGENDIAN
259 retval = bswap32(retval);
265 static CPUWriteMemoryFunc * const PPC_XCSR_write[] = {
271 static CPUReadMemoryFunc * const PPC_XCSR_read[] = {
278 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
279 typedef struct sysctrl_t {
290 STATE_HARDFILE = 0x01,
293 static sysctrl_t *sysctrl;
295 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
297 sysctrl_t *sysctrl = opaque;
299 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
301 sysctrl->fake_io[addr - 0x0398] = val;
304 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
306 sysctrl_t *sysctrl = opaque;
308 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
309 sysctrl->fake_io[addr - 0x0398]);
310 return sysctrl->fake_io[addr - 0x0398];
313 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
315 sysctrl_t *sysctrl = opaque;
317 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
318 addr - PPC_IO_BASE, val);
321 /* Special port 92 */
322 /* Check soft reset asked */
324 qemu_irq_raise(sysctrl->reset_irq);
326 qemu_irq_lower(sysctrl->reset_irq);
336 /* Motorola CPU configuration register : read-only */
339 /* Motorola base module feature register : read-only */
342 /* Motorola base module status register : read-only */
345 /* Hardfile light register */
347 sysctrl->state |= STATE_HARDFILE;
349 sysctrl->state &= ~STATE_HARDFILE;
352 /* Password protect 1 register */
353 if (sysctrl->nvram != NULL)
354 m48t59_toggle_lock(sysctrl->nvram, 1);
357 /* Password protect 2 register */
358 if (sysctrl->nvram != NULL)
359 m48t59_toggle_lock(sysctrl->nvram, 2);
362 /* L2 invalidate register */
363 // tlb_flush(first_cpu, 1);
366 /* system control register */
367 sysctrl->syscontrol = val & 0x0F;
370 /* I/O map type register */
371 sysctrl->contiguous_map = val & 0x01;
374 printf("ERROR: unaffected IO port write: %04" PRIx32
375 " => %02" PRIx32"\n", addr, val);
380 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
382 sysctrl_t *sysctrl = opaque;
383 uint32_t retval = 0xFF;
387 /* Special port 92 */
391 /* Motorola CPU configuration register */
392 retval = 0xEF; /* MPC750 */
395 /* Motorola Base module feature register */
396 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
399 /* Motorola base module status register */
400 retval = 0xE0; /* Standard MPC750 */
403 /* Equipment present register:
405 * no upgrade processor
406 * no cards in PCI slots
412 /* Motorola base module extended feature register */
413 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
416 /* L2 invalidate: don't care */
423 /* system control register
424 * 7 - 6 / 1 - 0: L2 cache enable
426 retval = sysctrl->syscontrol;
430 retval = 0x03; /* no L2 cache */
433 /* I/O map type register */
434 retval = sysctrl->contiguous_map;
437 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
440 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
441 addr - PPC_IO_BASE, retval);
446 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
447 target_phys_addr_t addr)
449 if (sysctrl->contiguous_map == 0) {
450 /* 64 KB contiguous space for IOs */
453 /* 8 MB non-contiguous space for IOs */
454 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
460 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
463 sysctrl_t *sysctrl = opaque;
465 addr = prep_IO_address(sysctrl, addr);
466 cpu_outb(addr, value);
469 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
471 sysctrl_t *sysctrl = opaque;
474 addr = prep_IO_address(sysctrl, addr);
480 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
483 sysctrl_t *sysctrl = opaque;
485 addr = prep_IO_address(sysctrl, addr);
486 #ifdef TARGET_WORDS_BIGENDIAN
487 value = bswap16(value);
489 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
490 cpu_outw(addr, value);
493 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
495 sysctrl_t *sysctrl = opaque;
498 addr = prep_IO_address(sysctrl, addr);
500 #ifdef TARGET_WORDS_BIGENDIAN
503 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
508 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
511 sysctrl_t *sysctrl = opaque;
513 addr = prep_IO_address(sysctrl, addr);
514 #ifdef TARGET_WORDS_BIGENDIAN
515 value = bswap32(value);
517 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
518 cpu_outl(addr, value);
521 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
523 sysctrl_t *sysctrl = opaque;
526 addr = prep_IO_address(sysctrl, addr);
528 #ifdef TARGET_WORDS_BIGENDIAN
531 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
536 static CPUWriteMemoryFunc * const PPC_prep_io_write[] = {
542 static CPUReadMemoryFunc * const PPC_prep_io_read[] = {
548 #define NVRAM_SIZE 0x2000
550 static void cpu_request_exit(void *opaque, int irq, int level)
552 CPUState *env = cpu_single_env;
559 /* PowerPC PREP hardware initialisation */
560 static void ppc_prep_init (ram_addr_t ram_size,
561 const char *boot_device,
562 const char *kernel_filename,
563 const char *kernel_cmdline,
564 const char *initrd_filename,
565 const char *cpu_model)
567 CPUState *env = NULL, *envs[MAX_CPUS];
572 int linux_boot, i, nb_nics1, bios_size;
573 ram_addr_t ram_offset, bios_offset;
574 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
577 qemu_irq *cpu_exit_irq;
579 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
580 DriveInfo *fd[MAX_FD];
582 sysctrl = qemu_mallocz(sizeof(sysctrl_t));
584 linux_boot = (kernel_filename != NULL);
587 if (cpu_model == NULL)
589 for (i = 0; i < smp_cpus; i++) {
590 env = cpu_init(cpu_model);
592 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
595 if (env->flags & POWERPC_FLAG_RTC_CLK) {
596 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
597 cpu_ppc_tb_init(env, 7812500UL);
599 /* Set time-base frequency to 100 Mhz */
600 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
602 qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
607 ram_offset = qemu_ram_alloc(NULL, "ppc_prep.ram", ram_size);
608 cpu_register_physical_memory(0, ram_size, ram_offset);
610 /* allocate and load BIOS */
611 bios_offset = qemu_ram_alloc(NULL, "ppc_prep.bios", BIOS_SIZE);
612 if (bios_name == NULL)
613 bios_name = BIOS_FILENAME;
614 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
616 bios_size = get_image_size(filename);
620 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
621 target_phys_addr_t bios_addr;
622 bios_size = (bios_size + 0xfff) & ~0xfff;
623 bios_addr = (uint32_t)(-bios_size);
624 cpu_register_physical_memory(bios_addr, bios_size,
625 bios_offset | IO_MEM_ROM);
626 bios_size = load_image_targphys(filename, bios_addr, bios_size);
628 if (bios_size < 0 || bios_size > BIOS_SIZE) {
629 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
634 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
635 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
639 kernel_base = KERNEL_LOAD_ADDR;
640 /* now we can load the kernel */
641 kernel_size = load_image_targphys(kernel_filename, kernel_base,
642 ram_size - kernel_base);
643 if (kernel_size < 0) {
644 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
648 if (initrd_filename) {
649 initrd_base = INITRD_LOAD_ADDR;
650 initrd_size = load_image_targphys(initrd_filename, initrd_base,
651 ram_size - initrd_base);
652 if (initrd_size < 0) {
653 hw_error("qemu: could not load initial ram disk '%s'\n",
660 ppc_boot_device = 'm';
666 ppc_boot_device = '\0';
667 /* For now, OHW cannot boot from the network. */
668 for (i = 0; boot_device[i] != '\0'; i++) {
669 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
670 ppc_boot_device = boot_device[i];
674 if (ppc_boot_device == '\0') {
675 fprintf(stderr, "No valid boot device for Mac99 machine\n");
680 isa_mem_base = 0xc0000000;
681 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
682 hw_error("Only 6xx bus is supported on PREP machine\n");
684 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
685 pci_bus = pci_prep_init(i8259);
686 /* Hmm, prep has no pci-isa bridge ??? */
689 // pci_bus = i440fx_init();
690 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
691 PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
692 PPC_prep_io_write, sysctrl);
693 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
695 /* init basic PC hardware */
696 pci_vga_init(pci_bus, 0, 0);
697 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
698 // pit = pit_init(0x40, i8259[0]);
699 rtc_init(2000, NULL);
702 serial_isa_init(0, serial_hds[0]);
704 if (nb_nics1 > NE2000_NB_MAX)
705 nb_nics1 = NE2000_NB_MAX;
706 for(i = 0; i < nb_nics1; i++) {
707 if (nd_table[i].model == NULL) {
708 nd_table[i].model = qemu_strdup("ne2k_isa");
710 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
711 isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
713 pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
717 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
718 fprintf(stderr, "qemu: too many IDE bus\n");
722 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
723 hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
726 for(i = 0; i < MAX_IDE_BUS; i++) {
727 isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
731 isa_create_simple("i8042");
733 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
734 DMA_init(1, cpu_exit_irq);
738 for(i = 0; i < MAX_FD; i++) {
739 fd[i] = drive_get(IF_FLOPPY, 0, i);
743 /* Register speaker port */
744 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
745 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
746 /* Register fake IO ports for PREP */
747 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
748 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
749 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
750 /* System control ports */
751 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
752 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
753 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
754 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
755 /* PCI intack location */
756 PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
757 PPC_intack_write, NULL);
758 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
759 /* PowerPC control and status register group */
761 PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
763 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
767 usb_ohci_init_pci(pci_bus, -1);
770 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
773 sysctrl->nvram = m48t59;
775 /* Initialise NVRAM */
776 nvram.opaque = m48t59;
777 nvram.read_fn = &m48t59_read;
778 nvram.write_fn = &m48t59_write;
779 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
780 kernel_base, kernel_size,
782 initrd_base, initrd_size,
783 /* XXX: need an option to load a NVRAM image */
785 graphic_width, graphic_height, graphic_depth);
787 /* Special port to get debug messages from Open-Firmware */
788 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
791 static QEMUMachine prep_machine = {
793 .desc = "PowerPC PREP platform",
794 .init = ppc_prep_init,
795 .max_cpus = MAX_CPUS,
798 static void prep_machine_init(void)
800 qemu_register_machine(&prep_machine);
803 machine_init(prep_machine_init);