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)
115 // printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
118 static always_inline uint32_t _PPC_intack_read (target_phys_addr_t addr)
122 if ((addr & 0xf) == 0)
123 retval = pic_intack_read(isa_pic);
124 // printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
129 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
131 return _PPC_intack_read(addr);
134 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
136 #ifdef TARGET_WORDS_BIGENDIAN
137 return bswap16(_PPC_intack_read(addr));
139 return _PPC_intack_read(addr);
143 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
145 #ifdef TARGET_WORDS_BIGENDIAN
146 return bswap32(_PPC_intack_read(addr));
148 return _PPC_intack_read(addr);
152 static CPUWriteMemoryFunc *PPC_intack_write[] = {
158 static CPUReadMemoryFunc *PPC_intack_read[] = {
164 /* PowerPC control and status registers */
170 /* Control and status */
175 /* General purpose registers */
188 /* Error diagnostic */
191 static void PPC_XCSR_writeb (void *opaque,
192 target_phys_addr_t addr, uint32_t value)
194 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
197 static void PPC_XCSR_writew (void *opaque,
198 target_phys_addr_t addr, uint32_t value)
200 #ifdef TARGET_WORDS_BIGENDIAN
201 value = bswap16(value);
203 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
206 static void PPC_XCSR_writel (void *opaque,
207 target_phys_addr_t addr, uint32_t value)
209 #ifdef TARGET_WORDS_BIGENDIAN
210 value = bswap32(value);
212 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
215 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
219 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
224 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
228 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
229 #ifdef TARGET_WORDS_BIGENDIAN
230 retval = bswap16(retval);
236 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
240 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
241 #ifdef TARGET_WORDS_BIGENDIAN
242 retval = bswap32(retval);
248 static CPUWriteMemoryFunc *PPC_XCSR_write[] = {
254 static CPUReadMemoryFunc *PPC_XCSR_read[] = {
261 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
262 typedef struct sysctrl_t {
273 STATE_HARDFILE = 0x01,
276 static sysctrl_t *sysctrl;
278 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
280 sysctrl_t *sysctrl = opaque;
282 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
284 sysctrl->fake_io[addr - 0x0398] = val;
287 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
289 sysctrl_t *sysctrl = opaque;
291 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
292 sysctrl->fake_io[addr - 0x0398]);
293 return sysctrl->fake_io[addr - 0x0398];
296 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
298 sysctrl_t *sysctrl = opaque;
300 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
301 addr - PPC_IO_BASE, val);
304 /* Special port 92 */
305 /* Check soft reset asked */
307 qemu_irq_raise(sysctrl->reset_irq);
309 qemu_irq_lower(sysctrl->reset_irq);
319 /* Motorola CPU configuration register : read-only */
322 /* Motorola base module feature register : read-only */
325 /* Motorola base module status register : read-only */
328 /* Hardfile light register */
330 sysctrl->state |= STATE_HARDFILE;
332 sysctrl->state &= ~STATE_HARDFILE;
335 /* Password protect 1 register */
336 if (sysctrl->nvram != NULL)
337 m48t59_toggle_lock(sysctrl->nvram, 1);
340 /* Password protect 2 register */
341 if (sysctrl->nvram != NULL)
342 m48t59_toggle_lock(sysctrl->nvram, 2);
345 /* L2 invalidate register */
346 // tlb_flush(first_cpu, 1);
349 /* system control register */
350 sysctrl->syscontrol = val & 0x0F;
353 /* I/O map type register */
354 sysctrl->contiguous_map = val & 0x01;
357 printf("ERROR: unaffected IO port write: %04" PRIx32
358 " => %02" PRIx32"\n", addr, val);
363 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
365 sysctrl_t *sysctrl = opaque;
366 uint32_t retval = 0xFF;
370 /* Special port 92 */
374 /* Motorola CPU configuration register */
375 retval = 0xEF; /* MPC750 */
378 /* Motorola Base module feature register */
379 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
382 /* Motorola base module status register */
383 retval = 0xE0; /* Standard MPC750 */
386 /* Equipment present register:
388 * no upgrade processor
389 * no cards in PCI slots
395 /* Motorola base module extended feature register */
396 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
399 /* L2 invalidate: don't care */
406 /* system control register
407 * 7 - 6 / 1 - 0: L2 cache enable
409 retval = sysctrl->syscontrol;
413 retval = 0x03; /* no L2 cache */
416 /* I/O map type register */
417 retval = sysctrl->contiguous_map;
420 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
423 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
424 addr - PPC_IO_BASE, retval);
429 static always_inline target_phys_addr_t prep_IO_address (sysctrl_t *sysctrl,
433 if (sysctrl->contiguous_map == 0) {
434 /* 64 KB contiguous space for IOs */
437 /* 8 MB non-contiguous space for IOs */
438 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
444 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
447 sysctrl_t *sysctrl = opaque;
449 addr = prep_IO_address(sysctrl, addr);
450 cpu_outb(NULL, addr, value);
453 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
455 sysctrl_t *sysctrl = opaque;
458 addr = prep_IO_address(sysctrl, addr);
459 ret = cpu_inb(NULL, addr);
464 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
467 sysctrl_t *sysctrl = opaque;
469 addr = prep_IO_address(sysctrl, addr);
470 #ifdef TARGET_WORDS_BIGENDIAN
471 value = bswap16(value);
473 PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
474 cpu_outw(NULL, addr, value);
477 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
479 sysctrl_t *sysctrl = opaque;
482 addr = prep_IO_address(sysctrl, addr);
483 ret = cpu_inw(NULL, addr);
484 #ifdef TARGET_WORDS_BIGENDIAN
487 PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
492 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
495 sysctrl_t *sysctrl = opaque;
497 addr = prep_IO_address(sysctrl, addr);
498 #ifdef TARGET_WORDS_BIGENDIAN
499 value = bswap32(value);
501 PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
502 cpu_outl(NULL, addr, value);
505 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
507 sysctrl_t *sysctrl = opaque;
510 addr = prep_IO_address(sysctrl, addr);
511 ret = cpu_inl(NULL, addr);
512 #ifdef TARGET_WORDS_BIGENDIAN
515 PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
520 static CPUWriteMemoryFunc *PPC_prep_io_write[] = {
526 static CPUReadMemoryFunc *PPC_prep_io_read[] = {
532 #define NVRAM_SIZE 0x2000
534 /* PowerPC PREP hardware initialisation */
535 static void ppc_prep_init (ram_addr_t ram_size,
536 const char *boot_device,
537 const char *kernel_filename,
538 const char *kernel_cmdline,
539 const char *initrd_filename,
540 const char *cpu_model)
542 CPUState *env = NULL, *envs[MAX_CPUS];
547 int linux_boot, i, nb_nics1, bios_size;
548 ram_addr_t ram_offset, bios_offset;
549 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
554 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
555 BlockDriverState *fd[MAX_FD];
557 sysctrl = qemu_mallocz(sizeof(sysctrl_t));
559 linux_boot = (kernel_filename != NULL);
562 if (cpu_model == NULL)
563 cpu_model = "default";
564 for (i = 0; i < smp_cpus; i++) {
565 env = cpu_init(cpu_model);
567 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
570 if (env->flags & POWERPC_FLAG_RTC_CLK) {
571 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
572 cpu_ppc_tb_init(env, 7812500UL);
574 /* Set time-base frequency to 100 Mhz */
575 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
577 qemu_register_reset(&cpu_ppc_reset, env);
582 ram_offset = qemu_ram_alloc(ram_size);
583 cpu_register_physical_memory(0, ram_size, ram_offset);
585 /* allocate and load BIOS */
586 bios_offset = qemu_ram_alloc(BIOS_SIZE);
587 if (bios_name == NULL)
588 bios_name = BIOS_FILENAME;
589 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
591 bios_size = get_image_size(filename);
595 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
596 target_phys_addr_t bios_addr;
597 bios_size = (bios_size + 0xfff) & ~0xfff;
598 bios_addr = (uint32_t)(-bios_size);
599 cpu_register_physical_memory(bios_addr, bios_size,
600 bios_offset | IO_MEM_ROM);
601 bios_size = load_image_targphys(filename, bios_addr, bios_size);
603 if (bios_size < 0 || bios_size > BIOS_SIZE) {
604 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
609 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
610 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
614 kernel_base = KERNEL_LOAD_ADDR;
615 /* now we can load the kernel */
616 kernel_size = load_image_targphys(kernel_filename, kernel_base,
617 ram_size - kernel_base);
618 if (kernel_size < 0) {
619 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
623 if (initrd_filename) {
624 initrd_base = INITRD_LOAD_ADDR;
625 initrd_size = load_image_targphys(initrd_filename, initrd_base,
626 ram_size - initrd_base);
627 if (initrd_size < 0) {
628 hw_error("qemu: could not load initial ram disk '%s'\n",
635 ppc_boot_device = 'm';
641 ppc_boot_device = '\0';
642 /* For now, OHW cannot boot from the network. */
643 for (i = 0; boot_device[i] != '\0'; i++) {
644 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
645 ppc_boot_device = boot_device[i];
649 if (ppc_boot_device == '\0') {
650 fprintf(stderr, "No valid boot device for Mac99 machine\n");
655 isa_mem_base = 0xc0000000;
656 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
657 hw_error("Only 6xx bus is supported on PREP machine\n");
659 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
660 pci_bus = pci_prep_init(i8259);
661 // pci_bus = i440fx_init();
662 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
663 PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
664 PPC_prep_io_write, sysctrl);
665 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
667 /* init basic PC hardware */
668 pci_vga_init(pci_bus, 0, 0);
669 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
670 // pit = pit_init(0x40, i8259[0]);
671 rtc_init(0x70, i8259[8], 2000);
673 serial_init(0x3f8, i8259[4], 115200, serial_hds[0]);
675 if (nb_nics1 > NE2000_NB_MAX)
676 nb_nics1 = NE2000_NB_MAX;
677 for(i = 0; i < nb_nics1; i++) {
678 if (nd_table[i].model == NULL) {
679 nd_table[i].model = "ne2k_isa";
681 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
682 isa_ne2000_init(ne2000_io[i], i8259[ne2000_irq[i]], &nd_table[i]);
684 pci_nic_init(&nd_table[i], "ne2k_pci", NULL);
688 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
689 fprintf(stderr, "qemu: too many IDE bus\n");
693 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
694 dinfo = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
695 hd[i] = dinfo ? dinfo->bdrv : NULL;
698 for(i = 0; i < MAX_IDE_BUS; i++) {
699 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
703 i8042_init(i8259[1], i8259[12], 0x60);
707 for(i = 0; i < MAX_FD; i++) {
708 dinfo = drive_get(IF_FLOPPY, 0, i);
709 fd[i] = dinfo ? dinfo->bdrv : NULL;
711 fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
713 /* Register speaker port */
714 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
715 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
716 /* Register fake IO ports for PREP */
717 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
718 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
719 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
720 /* System control ports */
721 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
722 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
723 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
724 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
725 /* PCI intack location */
726 PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
727 PPC_intack_write, NULL);
728 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
729 /* PowerPC control and status register group */
731 PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
733 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
737 usb_ohci_init_pci(pci_bus, 3, -1);
740 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
743 sysctrl->nvram = m48t59;
745 /* Initialise NVRAM */
746 nvram.opaque = m48t59;
747 nvram.read_fn = &m48t59_read;
748 nvram.write_fn = &m48t59_write;
749 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
750 kernel_base, kernel_size,
752 initrd_base, initrd_size,
753 /* XXX: need an option to load a NVRAM image */
755 graphic_width, graphic_height, graphic_depth);
757 /* Special port to get debug messages from Open-Firmware */
758 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
761 static QEMUMachine prep_machine = {
763 .desc = "PowerPC PREP platform",
764 .init = ppc_prep_init,
765 .max_cpus = MAX_CPUS,
768 static void prep_machine_init(void)
770 qemu_register_machine(&prep_machine);
773 machine_init(prep_machine_init);