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"
42 //#define HARD_DEBUG_PPC_IO
43 //#define DEBUG_PPC_IO
45 /* SMP is not enabled, for now */
50 #define BIOS_SIZE (1024 * 1024)
51 #define BIOS_FILENAME "ppc_rom.bin"
52 #define KERNEL_LOAD_ADDR 0x01000000
53 #define INITRD_LOAD_ADDR 0x01800000
55 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
59 #if defined (HARD_DEBUG_PPC_IO)
60 #define PPC_IO_DPRINTF(fmt, ...) \
62 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
63 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
65 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
68 #elif defined (DEBUG_PPC_IO)
69 #define PPC_IO_DPRINTF(fmt, ...) \
70 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
72 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
75 /* Constants for devices init */
76 static const int ide_iobase[2] = { 0x1f0, 0x170 };
77 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
78 static const int ide_irq[2] = { 13, 13 };
80 #define NE2000_NB_MAX 6
82 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
83 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
85 //static PITState *pit;
87 /* ISA IO ports bridge */
88 #define PPC_IO_BASE 0x80000000
91 /* Speaker port 0x61 */
92 static int speaker_data_on;
93 static int dummy_refresh_clock;
96 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
99 speaker_data_on = (val >> 1) & 1;
100 pit_set_gate(pit, 2, val & 1);
104 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
108 out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
109 dummy_refresh_clock ^= 1;
110 return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
111 (dummy_refresh_clock << 4);
116 /* PCI intack register */
117 /* Read-only register (?) */
118 static void _PPC_intack_write (void *opaque,
119 target_phys_addr_t addr, uint32_t value)
122 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
127 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr)
131 if ((addr & 0xf) == 0)
132 retval = pic_intack_read(isa_pic);
134 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
141 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
143 return _PPC_intack_read(addr);
146 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
148 #ifdef TARGET_WORDS_BIGENDIAN
149 return bswap16(_PPC_intack_read(addr));
151 return _PPC_intack_read(addr);
155 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
157 #ifdef TARGET_WORDS_BIGENDIAN
158 return bswap32(_PPC_intack_read(addr));
160 return _PPC_intack_read(addr);
164 static CPUWriteMemoryFunc * const PPC_intack_write[] = {
170 static CPUReadMemoryFunc * const PPC_intack_read[] = {
176 /* PowerPC control and status registers */
182 /* Control and status */
187 /* General purpose registers */
200 /* Error diagnostic */
203 static void PPC_XCSR_writeb (void *opaque,
204 target_phys_addr_t addr, uint32_t value)
206 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
210 static void PPC_XCSR_writew (void *opaque,
211 target_phys_addr_t addr, uint32_t value)
213 #ifdef TARGET_WORDS_BIGENDIAN
214 value = bswap16(value);
216 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
220 static void PPC_XCSR_writel (void *opaque,
221 target_phys_addr_t addr, uint32_t value)
223 #ifdef TARGET_WORDS_BIGENDIAN
224 value = bswap32(value);
226 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
230 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
234 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
240 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
244 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
246 #ifdef TARGET_WORDS_BIGENDIAN
247 retval = bswap16(retval);
253 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
257 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
259 #ifdef TARGET_WORDS_BIGENDIAN
260 retval = bswap32(retval);
266 static CPUWriteMemoryFunc * const PPC_XCSR_write[] = {
272 static CPUReadMemoryFunc * const PPC_XCSR_read[] = {
279 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
280 typedef struct sysctrl_t {
291 STATE_HARDFILE = 0x01,
294 static sysctrl_t *sysctrl;
296 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
298 sysctrl_t *sysctrl = opaque;
300 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
302 sysctrl->fake_io[addr - 0x0398] = val;
305 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
307 sysctrl_t *sysctrl = opaque;
309 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
310 sysctrl->fake_io[addr - 0x0398]);
311 return sysctrl->fake_io[addr - 0x0398];
314 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
316 sysctrl_t *sysctrl = opaque;
318 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
319 addr - PPC_IO_BASE, val);
322 /* Special port 92 */
323 /* Check soft reset asked */
325 qemu_irq_raise(sysctrl->reset_irq);
327 qemu_irq_lower(sysctrl->reset_irq);
337 /* Motorola CPU configuration register : read-only */
340 /* Motorola base module feature register : read-only */
343 /* Motorola base module status register : read-only */
346 /* Hardfile light register */
348 sysctrl->state |= STATE_HARDFILE;
350 sysctrl->state &= ~STATE_HARDFILE;
353 /* Password protect 1 register */
354 if (sysctrl->nvram != NULL)
355 m48t59_toggle_lock(sysctrl->nvram, 1);
358 /* Password protect 2 register */
359 if (sysctrl->nvram != NULL)
360 m48t59_toggle_lock(sysctrl->nvram, 2);
363 /* L2 invalidate register */
364 // tlb_flush(first_cpu, 1);
367 /* system control register */
368 sysctrl->syscontrol = val & 0x0F;
371 /* I/O map type register */
372 sysctrl->contiguous_map = val & 0x01;
375 printf("ERROR: unaffected IO port write: %04" PRIx32
376 " => %02" PRIx32"\n", addr, val);
381 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
383 sysctrl_t *sysctrl = opaque;
384 uint32_t retval = 0xFF;
388 /* Special port 92 */
392 /* Motorola CPU configuration register */
393 retval = 0xEF; /* MPC750 */
396 /* Motorola Base module feature register */
397 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
400 /* Motorola base module status register */
401 retval = 0xE0; /* Standard MPC750 */
404 /* Equipment present register:
406 * no upgrade processor
407 * no cards in PCI slots
413 /* Motorola base module extended feature register */
414 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
417 /* L2 invalidate: don't care */
424 /* system control register
425 * 7 - 6 / 1 - 0: L2 cache enable
427 retval = sysctrl->syscontrol;
431 retval = 0x03; /* no L2 cache */
434 /* I/O map type register */
435 retval = sysctrl->contiguous_map;
438 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
441 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
442 addr - PPC_IO_BASE, retval);
447 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
448 target_phys_addr_t addr)
450 if (sysctrl->contiguous_map == 0) {
451 /* 64 KB contiguous space for IOs */
454 /* 8 MB non-contiguous space for IOs */
455 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
461 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
464 sysctrl_t *sysctrl = opaque;
466 addr = prep_IO_address(sysctrl, addr);
467 cpu_outb(addr, value);
470 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
472 sysctrl_t *sysctrl = opaque;
475 addr = prep_IO_address(sysctrl, addr);
481 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
484 sysctrl_t *sysctrl = opaque;
486 addr = prep_IO_address(sysctrl, addr);
487 #ifdef TARGET_WORDS_BIGENDIAN
488 value = bswap16(value);
490 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
491 cpu_outw(addr, value);
494 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
496 sysctrl_t *sysctrl = opaque;
499 addr = prep_IO_address(sysctrl, addr);
501 #ifdef TARGET_WORDS_BIGENDIAN
504 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
509 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
512 sysctrl_t *sysctrl = opaque;
514 addr = prep_IO_address(sysctrl, addr);
515 #ifdef TARGET_WORDS_BIGENDIAN
516 value = bswap32(value);
518 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
519 cpu_outl(addr, value);
522 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
524 sysctrl_t *sysctrl = opaque;
527 addr = prep_IO_address(sysctrl, addr);
529 #ifdef TARGET_WORDS_BIGENDIAN
532 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
537 static CPUWriteMemoryFunc * const PPC_prep_io_write[] = {
543 static CPUReadMemoryFunc * const PPC_prep_io_read[] = {
549 #define NVRAM_SIZE 0x2000
551 static void cpu_request_exit(void *opaque, int irq, int level)
553 CPUState *env = cpu_single_env;
560 /* PowerPC PREP hardware initialisation */
561 static void ppc_prep_init (ram_addr_t ram_size,
562 const char *boot_device,
563 const char *kernel_filename,
564 const char *kernel_cmdline,
565 const char *initrd_filename,
566 const char *cpu_model)
568 CPUState *env = NULL;
573 int linux_boot, i, nb_nics1, bios_size;
574 ram_addr_t ram_offset, bios_offset;
575 uint32_t kernel_base, initrd_base;
576 long kernel_size, initrd_size;
579 qemu_irq *cpu_exit_irq;
581 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
582 DriveInfo *fd[MAX_FD];
584 sysctrl = qemu_mallocz(sizeof(sysctrl_t));
586 linux_boot = (kernel_filename != NULL);
589 if (cpu_model == NULL)
591 for (i = 0; i < smp_cpus; i++) {
592 env = cpu_init(cpu_model);
594 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
597 if (env->flags & POWERPC_FLAG_RTC_CLK) {
598 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
599 cpu_ppc_tb_init(env, 7812500UL);
601 /* Set time-base frequency to 100 Mhz */
602 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
604 qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
608 ram_offset = qemu_ram_alloc(NULL, "ppc_prep.ram", ram_size);
609 cpu_register_physical_memory(0, ram_size, ram_offset);
611 /* allocate and load BIOS */
612 bios_offset = qemu_ram_alloc(NULL, "ppc_prep.bios", BIOS_SIZE);
613 if (bios_name == NULL)
614 bios_name = BIOS_FILENAME;
615 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
617 bios_size = get_image_size(filename);
621 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
622 target_phys_addr_t bios_addr;
623 bios_size = (bios_size + 0xfff) & ~0xfff;
624 bios_addr = (uint32_t)(-bios_size);
625 cpu_register_physical_memory(bios_addr, bios_size,
626 bios_offset | IO_MEM_ROM);
627 bios_size = load_image_targphys(filename, bios_addr, bios_size);
629 if (bios_size < 0 || bios_size > BIOS_SIZE) {
630 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
635 if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
636 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
640 kernel_base = KERNEL_LOAD_ADDR;
641 /* now we can load the kernel */
642 kernel_size = load_image_targphys(kernel_filename, kernel_base,
643 ram_size - kernel_base);
644 if (kernel_size < 0) {
645 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
649 if (initrd_filename) {
650 initrd_base = INITRD_LOAD_ADDR;
651 initrd_size = load_image_targphys(initrd_filename, initrd_base,
652 ram_size - initrd_base);
653 if (initrd_size < 0) {
654 hw_error("qemu: could not load initial ram disk '%s'\n",
661 ppc_boot_device = 'm';
667 ppc_boot_device = '\0';
668 /* For now, OHW cannot boot from the network. */
669 for (i = 0; boot_device[i] != '\0'; i++) {
670 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
671 ppc_boot_device = boot_device[i];
675 if (ppc_boot_device == '\0') {
676 fprintf(stderr, "No valid boot device for Mac99 machine\n");
681 isa_mem_base = 0xc0000000;
682 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
683 hw_error("Only 6xx bus is supported on PREP machine\n");
685 i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
686 pci_bus = pci_prep_init(i8259);
687 /* Hmm, prep has no pci-isa bridge ??? */
690 // pci_bus = i440fx_init();
691 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
692 PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
693 PPC_prep_io_write, sysctrl);
694 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
696 /* init basic PC hardware */
697 pci_vga_init(pci_bus);
698 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
699 // pit = pit_init(0x40, i8259[0]);
700 rtc_init(2000, NULL);
703 serial_isa_init(0, serial_hds[0]);
705 if (nb_nics1 > NE2000_NB_MAX)
706 nb_nics1 = NE2000_NB_MAX;
707 for(i = 0; i < nb_nics1; i++) {
708 if (nd_table[i].model == NULL) {
709 nd_table[i].model = qemu_strdup("ne2k_isa");
711 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
712 isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
714 pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
718 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
719 fprintf(stderr, "qemu: too many IDE bus\n");
723 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
724 hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
727 for(i = 0; i < MAX_IDE_BUS; i++) {
728 isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
732 isa_create_simple("i8042");
734 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
735 DMA_init(1, cpu_exit_irq);
739 for(i = 0; i < MAX_FD; i++) {
740 fd[i] = drive_get(IF_FLOPPY, 0, i);
744 /* Register speaker port */
745 register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
746 register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
747 /* Register fake IO ports for PREP */
748 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
749 register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
750 register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
751 /* System control ports */
752 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
753 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
754 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
755 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
756 /* PCI intack location */
757 PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
758 PPC_intack_write, NULL);
759 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
760 /* PowerPC control and status register group */
762 PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
764 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
768 usb_ohci_init_pci(pci_bus, -1);
771 m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
774 sysctrl->nvram = m48t59;
776 /* Initialise NVRAM */
777 nvram.opaque = m48t59;
778 nvram.read_fn = &m48t59_read;
779 nvram.write_fn = &m48t59_write;
780 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
781 kernel_base, kernel_size,
783 initrd_base, initrd_size,
784 /* XXX: need an option to load a NVRAM image */
786 graphic_width, graphic_height, graphic_depth);
788 /* Special port to get debug messages from Open-Firmware */
789 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
792 static QEMUMachine prep_machine = {
794 .desc = "PowerPC PREP platform",
795 .init = ppc_prep_init,
796 .max_cpus = MAX_CPUS,
799 static void prep_machine_init(void)
801 qemu_register_machine(&prep_machine);
804 machine_init(prep_machine_init);