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_FILENAME "ppc_rom.bin"
45 #define KERNEL_LOAD_ADDR 0x01000000
46 #define INITRD_LOAD_ADDR 0x01800000
48 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
52 #if defined (HARD_DEBUG_PPC_IO)
53 #define PPC_IO_DPRINTF(fmt, args...) \
55 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
56 qemu_log("%s: " fmt, __func__ , ##args); \
58 printf("%s : " fmt, __func__ , ##args); \
61 #elif defined (DEBUG_PPC_IO)
62 #define PPC_IO_DPRINTF(fmt, args...) qemu_log_mask(CPU_LOG_IOPORT, ## __VA_ARGS__)
64 #define PPC_IO_DPRINTF(fmt, args...) do { } while (0)
67 /* Constants for devices init */
68 static const int ide_iobase[2] = { 0x1f0, 0x170 };
69 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
70 static const int ide_irq[2] = { 13, 13 };
72 #define NE2000_NB_MAX 6
74 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
75 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
77 //static PITState *pit;
79 /* ISA IO ports bridge */
80 #define PPC_IO_BASE 0x80000000
83 /* Speaker port 0x61 */
84 static int speaker_data_on;
85 static int dummy_refresh_clock;
88 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
91 speaker_data_on = (val >> 1) & 1;
92 pit_set_gate(pit, 2, val & 1);
96 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
100 out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
101 dummy_refresh_clock ^= 1;
102 return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
103 (dummy_refresh_clock << 4);
108 /* PCI intack register */
109 /* Read-only register (?) */
110 static void _PPC_intack_write (void *opaque,
111 target_phys_addr_t addr, uint32_t value)
113 // printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
116 static always_inline uint32_t _PPC_intack_read (target_phys_addr_t addr)
120 if ((addr & 0xf) == 0)
121 retval = pic_intack_read(isa_pic);
122 // printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
127 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
129 return _PPC_intack_read(addr);
132 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
134 #ifdef TARGET_WORDS_BIGENDIAN
135 return bswap16(_PPC_intack_read(addr));
137 return _PPC_intack_read(addr);
141 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
143 #ifdef TARGET_WORDS_BIGENDIAN
144 return bswap32(_PPC_intack_read(addr));
146 return _PPC_intack_read(addr);
150 static CPUWriteMemoryFunc *PPC_intack_write[] = {
156 static CPUReadMemoryFunc *PPC_intack_read[] = {
162 /* PowerPC control and status registers */
168 /* Control and status */
173 /* General purpose registers */
186 /* Error diagnostic */
189 static void PPC_XCSR_writeb (void *opaque,
190 target_phys_addr_t addr, uint32_t value)
192 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
195 static void PPC_XCSR_writew (void *opaque,
196 target_phys_addr_t addr, uint32_t value)
198 #ifdef TARGET_WORDS_BIGENDIAN
199 value = bswap16(value);
201 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
204 static void PPC_XCSR_writel (void *opaque,
205 target_phys_addr_t addr, uint32_t value)
207 #ifdef TARGET_WORDS_BIGENDIAN
208 value = bswap32(value);
210 printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
213 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
217 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
222 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
226 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
227 #ifdef TARGET_WORDS_BIGENDIAN
228 retval = bswap16(retval);
234 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
238 printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
239 #ifdef TARGET_WORDS_BIGENDIAN
240 retval = bswap32(retval);
246 static CPUWriteMemoryFunc *PPC_XCSR_write[] = {
252 static CPUReadMemoryFunc *PPC_XCSR_read[] = {
259 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
260 typedef struct sysctrl_t {
271 STATE_HARDFILE = 0x01,
274 static sysctrl_t *sysctrl;
276 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
278 sysctrl_t *sysctrl = opaque;
280 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
282 sysctrl->fake_io[addr - 0x0398] = val;
285 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
287 sysctrl_t *sysctrl = opaque;
289 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
290 sysctrl->fake_io[addr - 0x0398]);
291 return sysctrl->fake_io[addr - 0x0398];
294 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
296 sysctrl_t *sysctrl = opaque;
298 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
299 addr - PPC_IO_BASE, val);
302 /* Special port 92 */
303 /* Check soft reset asked */
305 qemu_irq_raise(sysctrl->reset_irq);
307 qemu_irq_lower(sysctrl->reset_irq);
317 /* Motorola CPU configuration register : read-only */
320 /* Motorola base module feature register : read-only */
323 /* Motorola base module status register : read-only */
326 /* Hardfile light register */
328 sysctrl->state |= STATE_HARDFILE;
330 sysctrl->state &= ~STATE_HARDFILE;
333 /* Password protect 1 register */
334 if (sysctrl->nvram != NULL)
335 m48t59_toggle_lock(sysctrl->nvram, 1);
338 /* Password protect 2 register */
339 if (sysctrl->nvram != NULL)
340 m48t59_toggle_lock(sysctrl->nvram, 2);
343 /* L2 invalidate register */
344 // tlb_flush(first_cpu, 1);
347 /* system control register */
348 sysctrl->syscontrol = val & 0x0F;
351 /* I/O map type register */
352 sysctrl->contiguous_map = val & 0x01;
355 printf("ERROR: unaffected IO port write: %04" PRIx32
356 " => %02" PRIx32"\n", addr, val);
361 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
363 sysctrl_t *sysctrl = opaque;
364 uint32_t retval = 0xFF;
368 /* Special port 92 */
372 /* Motorola CPU configuration register */
373 retval = 0xEF; /* MPC750 */
376 /* Motorola Base module feature register */
377 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
380 /* Motorola base module status register */
381 retval = 0xE0; /* Standard MPC750 */
384 /* Equipment present register:
386 * no upgrade processor
387 * no cards in PCI slots
393 /* Motorola base module extended feature register */
394 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
397 /* L2 invalidate: don't care */
404 /* system control register
405 * 7 - 6 / 1 - 0: L2 cache enable
407 retval = sysctrl->syscontrol;
411 retval = 0x03; /* no L2 cache */
414 /* I/O map type register */
415 retval = sysctrl->contiguous_map;
418 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
421 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
422 addr - PPC_IO_BASE, retval);
427 static always_inline target_phys_addr_t prep_IO_address (sysctrl_t *sysctrl,
431 if (sysctrl->contiguous_map == 0) {
432 /* 64 KB contiguous space for IOs */
435 /* 8 MB non-contiguous space for IOs */
436 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
442 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
445 sysctrl_t *sysctrl = opaque;
447 addr = prep_IO_address(sysctrl, addr);
448 cpu_outb(NULL, addr, value);
451 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
453 sysctrl_t *sysctrl = opaque;
456 addr = prep_IO_address(sysctrl, addr);
457 ret = cpu_inb(NULL, addr);
462 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
465 sysctrl_t *sysctrl = opaque;
467 addr = prep_IO_address(sysctrl, addr);
468 #ifdef TARGET_WORDS_BIGENDIAN
469 value = bswap16(value);
471 PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
472 cpu_outw(NULL, addr, value);
475 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
477 sysctrl_t *sysctrl = opaque;
480 addr = prep_IO_address(sysctrl, addr);
481 ret = cpu_inw(NULL, addr);
482 #ifdef TARGET_WORDS_BIGENDIAN
485 PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
490 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
493 sysctrl_t *sysctrl = opaque;
495 addr = prep_IO_address(sysctrl, addr);
496 #ifdef TARGET_WORDS_BIGENDIAN
497 value = bswap32(value);
499 PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
500 cpu_outl(NULL, addr, value);
503 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
505 sysctrl_t *sysctrl = opaque;
508 addr = prep_IO_address(sysctrl, addr);
509 ret = cpu_inl(NULL, addr);
510 #ifdef TARGET_WORDS_BIGENDIAN
513 PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
518 static CPUWriteMemoryFunc *PPC_prep_io_write[] = {
524 static CPUReadMemoryFunc *PPC_prep_io_read[] = {
530 #define NVRAM_SIZE 0x2000
532 /* PowerPC PREP hardware initialisation */
533 static void ppc_prep_init (ram_addr_t ram_size, int vga_ram_size,
534 const char *boot_device,
535 const char *kernel_filename,
536 const char *kernel_cmdline,
537 const char *initrd_filename,
538 const char *cpu_model)
540 CPUState *env = NULL, *envs[MAX_CPUS];
545 int linux_boot, i, nb_nics1, bios_size;
546 unsigned long bios_offset;
547 uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
552 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
553 BlockDriverState *fd[MAX_FD];
555 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 cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
584 /* allocate and load BIOS */
585 bios_offset = ram_size + vga_ram_size;
586 if (bios_name == NULL)
587 bios_name = BIOS_FILENAME;
588 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
589 bios_size = load_image(buf, phys_ram_base + bios_offset);
590 if (bios_size < 0 || bios_size > BIOS_SIZE) {
591 cpu_abort(env, "qemu: could not load PPC PREP bios '%s'\n", buf);
594 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
595 cpu_abort(env, "PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
597 bios_size = (bios_size + 0xfff) & ~0xfff;
598 cpu_register_physical_memory((uint32_t)(-bios_size),
599 bios_size, bios_offset | IO_MEM_ROM);
602 kernel_base = KERNEL_LOAD_ADDR;
603 /* now we can load the kernel */
604 kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
605 if (kernel_size < 0) {
606 cpu_abort(env, "qemu: could not load kernel '%s'\n",
611 if (initrd_filename) {
612 initrd_base = INITRD_LOAD_ADDR;
613 initrd_size = load_image(initrd_filename,
614 phys_ram_base + initrd_base);
615 if (initrd_size < 0) {
616 cpu_abort(env, "qemu: could not load initial ram disk '%s'\n",
624 ppc_boot_device = 'm';
630 ppc_boot_device = '\0';
631 /* For now, OHW cannot boot from the network. */
632 for (i = 0; boot_device[i] != '\0'; i++) {
633 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
634 ppc_boot_device = boot_device[i];
638 if (ppc_boot_device == '\0') {
639 fprintf(stderr, "No valid boot device for Mac99 machine\n");
644 isa_mem_base = 0xc0000000;
645 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
646 cpu_abort(env, "Only 6xx bus is supported on PREP machine\n");
649 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
650 pci_bus = pci_prep_init(i8259);
651 // pci_bus = i440fx_init();
652 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
653 PPC_io_memory = cpu_register_io_memory(0, PPC_prep_io_read,
654 PPC_prep_io_write, sysctrl);
655 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
657 /* init basic PC hardware */
658 pci_vga_init(pci_bus, phys_ram_base + ram_size, ram_size,
660 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
661 // pit = pit_init(0x40, i8259[0]);
662 rtc_init(0x70, i8259[8]);
664 serial_init(0x3f8, i8259[4], 115200, serial_hds[0]);
666 if (nb_nics1 > NE2000_NB_MAX)
667 nb_nics1 = NE2000_NB_MAX;
668 for(i = 0; i < nb_nics1; i++) {
669 if (nd_table[i].model == NULL) {
670 nd_table[i].model = "ne2k_isa";
672 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
673 isa_ne2000_init(ne2000_io[i], i8259[ne2000_irq[i]], &nd_table[i]);
675 pci_nic_init(pci_bus, &nd_table[i], -1, "ne2k_pci");
679 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
680 fprintf(stderr, "qemu: too many IDE bus\n");
684 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
685 index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
687 hd[i] = drives_table[index].bdrv;
692 for(i = 0; i < MAX_IDE_BUS; i++) {
693 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
697 i8042_init(i8259[1], i8259[12], 0x60);
702 for(i = 0; i < MAX_FD; i++) {
703 index = drive_get_index(IF_FLOPPY, 0, i);
705 fd[i] = drives_table[index].bdrv;
709 fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
711 /* Register speaker port */
712 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
713 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
714 /* Register fake IO ports for PREP */
715 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
716 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
717 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
718 /* System control ports */
719 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
720 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
721 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
722 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
723 /* PCI intack location */
724 PPC_io_memory = cpu_register_io_memory(0, PPC_intack_read,
725 PPC_intack_write, NULL);
726 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
727 /* PowerPC control and status register group */
729 PPC_io_memory = cpu_register_io_memory(0, PPC_XCSR_read, PPC_XCSR_write,
731 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
735 usb_ohci_init_pci(pci_bus, 3, -1);
738 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
741 sysctrl->nvram = m48t59;
743 /* Initialise NVRAM */
744 nvram.opaque = m48t59;
745 nvram.read_fn = &m48t59_read;
746 nvram.write_fn = &m48t59_write;
747 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
748 kernel_base, kernel_size,
750 initrd_base, initrd_size,
751 /* XXX: need an option to load a NVRAM image */
753 graphic_width, graphic_height, graphic_depth);
755 /* Special port to get debug messages from Open-Firmware */
756 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
759 QEMUMachine prep_machine = {
761 .desc = "PowerPC PREP platform",
762 .init = ppc_prep_init,
763 .ram_require = BIOS_SIZE + VGA_RAM_SIZE,
764 .max_cpus = MAX_CPUS,