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
40 //#define HARD_DEBUG_PPC_IO
41 //#define DEBUG_PPC_IO
43 /* SMP is not enabled, for now */
48 #define BIOS_SIZE (1024 * 1024)
49 #define BIOS_FILENAME "ppc_rom.bin"
50 #define KERNEL_LOAD_ADDR 0x01000000
51 #define INITRD_LOAD_ADDR 0x01800000
53 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
57 #if defined (HARD_DEBUG_PPC_IO)
58 #define PPC_IO_DPRINTF(fmt, ...) \
60 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
61 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
63 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
66 #elif defined (DEBUG_PPC_IO)
67 #define PPC_IO_DPRINTF(fmt, ...) \
68 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
70 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
73 /* Constants for devices init */
74 static const int ide_iobase[2] = { 0x1f0, 0x170 };
75 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
76 static const int ide_irq[2] = { 13, 13 };
78 #define NE2000_NB_MAX 6
80 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
81 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
83 //static PITState *pit;
85 /* ISA IO ports bridge */
86 #define PPC_IO_BASE 0x80000000
89 /* Speaker port 0x61 */
90 static int speaker_data_on;
91 static int dummy_refresh_clock;
94 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
97 speaker_data_on = (val >> 1) & 1;
98 pit_set_gate(pit, 2, val & 1);
102 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
106 out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
107 dummy_refresh_clock ^= 1;
108 return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
109 (dummy_refresh_clock << 4);
114 /* PCI intack register */
115 /* Read-only register (?) */
116 static void _PPC_intack_write (void *opaque,
117 target_phys_addr_t addr, uint32_t value)
120 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
125 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr)
129 if ((addr & 0xf) == 0)
130 retval = pic_intack_read(isa_pic);
132 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
139 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
141 return _PPC_intack_read(addr);
144 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
146 #ifdef TARGET_WORDS_BIGENDIAN
147 return bswap16(_PPC_intack_read(addr));
149 return _PPC_intack_read(addr);
153 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
155 #ifdef TARGET_WORDS_BIGENDIAN
156 return bswap32(_PPC_intack_read(addr));
158 return _PPC_intack_read(addr);
162 static CPUWriteMemoryFunc * const PPC_intack_write[] = {
168 static CPUReadMemoryFunc * const PPC_intack_read[] = {
174 /* PowerPC control and status registers */
180 /* Control and status */
185 /* General purpose registers */
198 /* Error diagnostic */
201 static void PPC_XCSR_writeb (void *opaque,
202 target_phys_addr_t addr, uint32_t value)
204 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
208 static void PPC_XCSR_writew (void *opaque,
209 target_phys_addr_t addr, uint32_t value)
211 #ifdef TARGET_WORDS_BIGENDIAN
212 value = bswap16(value);
214 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
218 static void PPC_XCSR_writel (void *opaque,
219 target_phys_addr_t addr, uint32_t value)
221 #ifdef TARGET_WORDS_BIGENDIAN
222 value = bswap32(value);
224 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
228 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
232 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
238 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
242 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
244 #ifdef TARGET_WORDS_BIGENDIAN
245 retval = bswap16(retval);
251 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
255 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
257 #ifdef TARGET_WORDS_BIGENDIAN
258 retval = bswap32(retval);
264 static CPUWriteMemoryFunc * const PPC_XCSR_write[] = {
270 static CPUReadMemoryFunc * const PPC_XCSR_read[] = {
277 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
278 typedef struct sysctrl_t {
289 STATE_HARDFILE = 0x01,
292 static sysctrl_t *sysctrl;
294 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
296 sysctrl_t *sysctrl = opaque;
298 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
300 sysctrl->fake_io[addr - 0x0398] = val;
303 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
305 sysctrl_t *sysctrl = opaque;
307 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
308 sysctrl->fake_io[addr - 0x0398]);
309 return sysctrl->fake_io[addr - 0x0398];
312 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
314 sysctrl_t *sysctrl = opaque;
316 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
317 addr - PPC_IO_BASE, val);
320 /* Special port 92 */
321 /* Check soft reset asked */
323 qemu_irq_raise(sysctrl->reset_irq);
325 qemu_irq_lower(sysctrl->reset_irq);
335 /* Motorola CPU configuration register : read-only */
338 /* Motorola base module feature register : read-only */
341 /* Motorola base module status register : read-only */
344 /* Hardfile light register */
346 sysctrl->state |= STATE_HARDFILE;
348 sysctrl->state &= ~STATE_HARDFILE;
351 /* Password protect 1 register */
352 if (sysctrl->nvram != NULL)
353 m48t59_toggle_lock(sysctrl->nvram, 1);
356 /* Password protect 2 register */
357 if (sysctrl->nvram != NULL)
358 m48t59_toggle_lock(sysctrl->nvram, 2);
361 /* L2 invalidate register */
362 // tlb_flush(first_cpu, 1);
365 /* system control register */
366 sysctrl->syscontrol = val & 0x0F;
369 /* I/O map type register */
370 sysctrl->contiguous_map = val & 0x01;
373 printf("ERROR: unaffected IO port write: %04" PRIx32
374 " => %02" PRIx32"\n", addr, val);
379 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
381 sysctrl_t *sysctrl = opaque;
382 uint32_t retval = 0xFF;
386 /* Special port 92 */
390 /* Motorola CPU configuration register */
391 retval = 0xEF; /* MPC750 */
394 /* Motorola Base module feature register */
395 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
398 /* Motorola base module status register */
399 retval = 0xE0; /* Standard MPC750 */
402 /* Equipment present register:
404 * no upgrade processor
405 * no cards in PCI slots
411 /* Motorola base module extended feature register */
412 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
415 /* L2 invalidate: don't care */
422 /* system control register
423 * 7 - 6 / 1 - 0: L2 cache enable
425 retval = sysctrl->syscontrol;
429 retval = 0x03; /* no L2 cache */
432 /* I/O map type register */
433 retval = sysctrl->contiguous_map;
436 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
439 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
440 addr - PPC_IO_BASE, retval);
445 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
446 target_phys_addr_t addr)
448 if (sysctrl->contiguous_map == 0) {
449 /* 64 KB contiguous space for IOs */
452 /* 8 MB non-contiguous space for IOs */
453 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
459 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
462 sysctrl_t *sysctrl = opaque;
464 addr = prep_IO_address(sysctrl, addr);
465 cpu_outb(addr, value);
468 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
470 sysctrl_t *sysctrl = opaque;
473 addr = prep_IO_address(sysctrl, addr);
479 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
482 sysctrl_t *sysctrl = opaque;
484 addr = prep_IO_address(sysctrl, addr);
485 #ifdef TARGET_WORDS_BIGENDIAN
486 value = bswap16(value);
488 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
489 cpu_outw(addr, value);
492 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
494 sysctrl_t *sysctrl = opaque;
497 addr = prep_IO_address(sysctrl, addr);
499 #ifdef TARGET_WORDS_BIGENDIAN
502 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
507 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
510 sysctrl_t *sysctrl = opaque;
512 addr = prep_IO_address(sysctrl, addr);
513 #ifdef TARGET_WORDS_BIGENDIAN
514 value = bswap32(value);
516 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
517 cpu_outl(addr, value);
520 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
522 sysctrl_t *sysctrl = opaque;
525 addr = prep_IO_address(sysctrl, addr);
527 #ifdef TARGET_WORDS_BIGENDIAN
530 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
535 static CPUWriteMemoryFunc * const PPC_prep_io_write[] = {
541 static CPUReadMemoryFunc * const PPC_prep_io_read[] = {
547 #define NVRAM_SIZE 0x2000
549 /* PowerPC PREP hardware initialisation */
550 static void ppc_prep_init (ram_addr_t ram_size,
551 const char *boot_device,
552 const char *kernel_filename,
553 const char *kernel_cmdline,
554 const char *initrd_filename,
555 const char *cpu_model)
557 CPUState *env = NULL, *envs[MAX_CPUS];
562 int linux_boot, i, nb_nics1, bios_size;
563 ram_addr_t ram_offset, bios_offset;
564 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
568 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
569 DriveInfo *fd[MAX_FD];
571 sysctrl = qemu_mallocz(sizeof(sysctrl_t));
573 linux_boot = (kernel_filename != NULL);
576 if (cpu_model == NULL)
578 for (i = 0; i < smp_cpus; i++) {
579 env = cpu_init(cpu_model);
581 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
584 if (env->flags & POWERPC_FLAG_RTC_CLK) {
585 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
586 cpu_ppc_tb_init(env, 7812500UL);
588 /* Set time-base frequency to 100 Mhz */
589 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
591 qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
596 ram_offset = qemu_ram_alloc(ram_size);
597 cpu_register_physical_memory(0, ram_size, ram_offset);
599 /* allocate and load BIOS */
600 bios_offset = qemu_ram_alloc(BIOS_SIZE);
601 if (bios_name == NULL)
602 bios_name = BIOS_FILENAME;
603 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
605 bios_size = get_image_size(filename);
609 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
610 target_phys_addr_t bios_addr;
611 bios_size = (bios_size + 0xfff) & ~0xfff;
612 bios_addr = (uint32_t)(-bios_size);
613 cpu_register_physical_memory(bios_addr, bios_size,
614 bios_offset | IO_MEM_ROM);
615 bios_size = load_image_targphys(filename, bios_addr, bios_size);
617 if (bios_size < 0 || bios_size > BIOS_SIZE) {
618 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
623 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
624 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
628 kernel_base = KERNEL_LOAD_ADDR;
629 /* now we can load the kernel */
630 kernel_size = load_image_targphys(kernel_filename, kernel_base,
631 ram_size - kernel_base);
632 if (kernel_size < 0) {
633 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
637 if (initrd_filename) {
638 initrd_base = INITRD_LOAD_ADDR;
639 initrd_size = load_image_targphys(initrd_filename, initrd_base,
640 ram_size - initrd_base);
641 if (initrd_size < 0) {
642 hw_error("qemu: could not load initial ram disk '%s'\n",
649 ppc_boot_device = 'm';
655 ppc_boot_device = '\0';
656 /* For now, OHW cannot boot from the network. */
657 for (i = 0; boot_device[i] != '\0'; i++) {
658 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
659 ppc_boot_device = boot_device[i];
663 if (ppc_boot_device == '\0') {
664 fprintf(stderr, "No valid boot device for Mac99 machine\n");
669 isa_mem_base = 0xc0000000;
670 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
671 hw_error("Only 6xx bus is supported on PREP machine\n");
673 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
674 pci_bus = pci_prep_init(i8259);
675 /* Hmm, prep has no pci-isa bridge ??? */
678 // pci_bus = i440fx_init();
679 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
680 PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
681 PPC_prep_io_write, sysctrl);
682 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
684 /* init basic PC hardware */
685 pci_vga_init(pci_bus, 0, 0);
686 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
687 // pit = pit_init(0x40, i8259[0]);
691 serial_isa_init(0, serial_hds[0]);
693 if (nb_nics1 > NE2000_NB_MAX)
694 nb_nics1 = NE2000_NB_MAX;
695 for(i = 0; i < nb_nics1; i++) {
696 if (nd_table[i].model == NULL) {
697 nd_table[i].model = qemu_strdup("ne2k_isa");
699 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
700 isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
702 pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
706 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
707 fprintf(stderr, "qemu: too many IDE bus\n");
711 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
712 hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
715 for(i = 0; i < MAX_IDE_BUS; i++) {
716 isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
720 isa_create_simple("i8042");
724 for(i = 0; i < MAX_FD; i++) {
725 fd[i] = drive_get(IF_FLOPPY, 0, i);
729 /* Register speaker port */
730 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
731 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
732 /* Register fake IO ports for PREP */
733 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
734 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
735 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
736 /* System control ports */
737 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
738 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
739 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
740 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
741 /* PCI intack location */
742 PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
743 PPC_intack_write, NULL);
744 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
745 /* PowerPC control and status register group */
747 PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
749 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
753 usb_ohci_init_pci(pci_bus, -1);
756 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
759 sysctrl->nvram = m48t59;
761 /* Initialise NVRAM */
762 nvram.opaque = m48t59;
763 nvram.read_fn = &m48t59_read;
764 nvram.write_fn = &m48t59_write;
765 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
766 kernel_base, kernel_size,
768 initrd_base, initrd_size,
769 /* XXX: need an option to load a NVRAM image */
771 graphic_width, graphic_height, graphic_depth);
773 /* Special port to get debug messages from Open-Firmware */
774 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
777 static QEMUMachine prep_machine = {
779 .desc = "PowerPC PREP platform",
780 .init = ppc_prep_init,
781 .max_cpus = MAX_CPUS,
784 static void prep_machine_init(void)
786 qemu_register_machine(&prep_machine);
789 machine_init(prep_machine_init);