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
25 #include "hw/timer/m48t59.h"
26 #include "hw/i386/pc.h"
27 #include "hw/char/serial.h"
28 #include "hw/block/fdc.h"
30 #include "sysemu/sysemu.h"
31 #include "hw/isa/isa.h"
32 #include "hw/pci/pci.h"
33 #include "hw/pci/pci_host.h"
34 #include "hw/ppc/ppc.h"
35 #include "hw/boards.h"
38 #include "hw/loader.h"
39 #include "hw/timer/mc146818rtc.h"
40 #include "hw/isa/pc87312.h"
41 #include "sysemu/blockdev.h"
42 #include "sysemu/arch_init.h"
43 #include "sysemu/qtest.h"
44 #include "exec/address-spaces.h"
47 //#define HARD_DEBUG_PPC_IO
48 //#define DEBUG_PPC_IO
50 /* SMP is not enabled, for now */
55 #define BIOS_SIZE (1024 * 1024)
56 #define BIOS_FILENAME "ppc_rom.bin"
57 #define KERNEL_LOAD_ADDR 0x01000000
58 #define INITRD_LOAD_ADDR 0x01800000
60 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
64 #if defined (HARD_DEBUG_PPC_IO)
65 #define PPC_IO_DPRINTF(fmt, ...) \
67 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
68 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
70 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
73 #elif defined (DEBUG_PPC_IO)
74 #define PPC_IO_DPRINTF(fmt, ...) \
75 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
77 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
80 /* Constants for devices init */
81 static const int ide_iobase[2] = { 0x1f0, 0x170 };
82 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
83 static const int ide_irq[2] = { 13, 13 };
85 #define NE2000_NB_MAX 6
87 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
88 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
90 /* ISA IO ports bridge */
91 #define PPC_IO_BASE 0x80000000
93 /* PowerPC control and status registers */
99 /* Control and status */
104 /* General purpose registers */
117 /* Error diagnostic */
120 static void PPC_XCSR_writeb (void *opaque,
121 hwaddr addr, uint32_t value)
123 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
127 static void PPC_XCSR_writew (void *opaque,
128 hwaddr addr, uint32_t value)
130 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
134 static void PPC_XCSR_writel (void *opaque,
135 hwaddr addr, uint32_t value)
137 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
141 static uint32_t PPC_XCSR_readb (void *opaque, hwaddr addr)
145 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
151 static uint32_t PPC_XCSR_readw (void *opaque, hwaddr addr)
155 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
161 static uint32_t PPC_XCSR_readl (void *opaque, hwaddr addr)
165 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
171 static const MemoryRegionOps PPC_XCSR_ops = {
173 .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, },
174 .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, },
176 .endianness = DEVICE_LITTLE_ENDIAN,
181 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
182 typedef struct sysctrl_t {
192 STATE_HARDFILE = 0x01,
195 static sysctrl_t *sysctrl;
197 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
199 sysctrl_t *sysctrl = opaque;
201 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
202 addr - PPC_IO_BASE, val);
205 /* Special port 92 */
206 /* Check soft reset asked */
208 qemu_irq_raise(sysctrl->reset_irq);
210 qemu_irq_lower(sysctrl->reset_irq);
220 /* Motorola CPU configuration register : read-only */
223 /* Motorola base module feature register : read-only */
226 /* Motorola base module status register : read-only */
229 /* Hardfile light register */
231 sysctrl->state |= STATE_HARDFILE;
233 sysctrl->state &= ~STATE_HARDFILE;
236 /* Password protect 1 register */
237 if (sysctrl->nvram != NULL)
238 m48t59_toggle_lock(sysctrl->nvram, 1);
241 /* Password protect 2 register */
242 if (sysctrl->nvram != NULL)
243 m48t59_toggle_lock(sysctrl->nvram, 2);
246 /* L2 invalidate register */
247 // tlb_flush(first_cpu, 1);
250 /* system control register */
251 sysctrl->syscontrol = val & 0x0F;
254 /* I/O map type register */
255 sysctrl->contiguous_map = val & 0x01;
258 printf("ERROR: unaffected IO port write: %04" PRIx32
259 " => %02" PRIx32"\n", addr, val);
264 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
266 sysctrl_t *sysctrl = opaque;
267 uint32_t retval = 0xFF;
271 /* Special port 92 */
272 retval = sysctrl->endian << 1;
275 /* Motorola CPU configuration register */
276 retval = 0xEF; /* MPC750 */
279 /* Motorola Base module feature register */
280 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
283 /* Motorola base module status register */
284 retval = 0xE0; /* Standard MPC750 */
287 /* Equipment present register:
289 * no upgrade processor
290 * no cards in PCI slots
296 /* Motorola base module extended feature register */
297 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
300 /* L2 invalidate: don't care */
307 /* system control register
308 * 7 - 6 / 1 - 0: L2 cache enable
310 retval = sysctrl->syscontrol;
314 retval = 0x03; /* no L2 cache */
317 /* I/O map type register */
318 retval = sysctrl->contiguous_map;
321 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
324 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
325 addr - PPC_IO_BASE, retval);
330 static inline hwaddr prep_IO_address(sysctrl_t *sysctrl,
333 if (sysctrl->contiguous_map == 0) {
334 /* 64 KB contiguous space for IOs */
337 /* 8 MB non-contiguous space for IOs */
338 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
344 static void PPC_prep_io_writeb (void *opaque, hwaddr addr,
347 sysctrl_t *sysctrl = opaque;
349 addr = prep_IO_address(sysctrl, addr);
350 cpu_outb(addr, value);
353 static uint32_t PPC_prep_io_readb (void *opaque, hwaddr addr)
355 sysctrl_t *sysctrl = opaque;
358 addr = prep_IO_address(sysctrl, addr);
364 static void PPC_prep_io_writew (void *opaque, hwaddr addr,
367 sysctrl_t *sysctrl = opaque;
369 addr = prep_IO_address(sysctrl, addr);
370 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
371 cpu_outw(addr, value);
374 static uint32_t PPC_prep_io_readw (void *opaque, hwaddr addr)
376 sysctrl_t *sysctrl = opaque;
379 addr = prep_IO_address(sysctrl, addr);
381 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
386 static void PPC_prep_io_writel (void *opaque, hwaddr addr,
389 sysctrl_t *sysctrl = opaque;
391 addr = prep_IO_address(sysctrl, addr);
392 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
393 cpu_outl(addr, value);
396 static uint32_t PPC_prep_io_readl (void *opaque, hwaddr addr)
398 sysctrl_t *sysctrl = opaque;
401 addr = prep_IO_address(sysctrl, addr);
403 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
408 static const MemoryRegionOps PPC_prep_io_ops = {
410 .read = { PPC_prep_io_readb, PPC_prep_io_readw, PPC_prep_io_readl },
411 .write = { PPC_prep_io_writeb, PPC_prep_io_writew, PPC_prep_io_writel },
413 .endianness = DEVICE_LITTLE_ENDIAN,
416 #define NVRAM_SIZE 0x2000
418 static void cpu_request_exit(void *opaque, int irq, int level)
420 CPUState *cpu = current_cpu;
427 static void ppc_prep_reset(void *opaque)
429 PowerPCCPU *cpu = opaque;
434 cpu->env.nip = 0xfffffffc;
437 static const MemoryRegionPortio prep_portio_list[] = {
438 /* System control ports */
439 { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
441 .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
442 /* Special port to get debug messages from Open-Firmware */
443 { 0x0F00, 4, 1, .write = PPC_debug_write, },
444 PORTIO_END_OF_LIST(),
447 /* PowerPC PREP hardware initialisation */
448 static void ppc_prep_init(QEMUMachineInitArgs *args)
450 ram_addr_t ram_size = args->ram_size;
451 const char *cpu_model = args->cpu_model;
452 const char *kernel_filename = args->kernel_filename;
453 const char *kernel_cmdline = args->kernel_cmdline;
454 const char *initrd_filename = args->initrd_filename;
455 const char *boot_device = args->boot_device;
456 MemoryRegion *sysmem = get_system_memory();
457 PowerPCCPU *cpu = NULL;
458 CPUPPCState *env = NULL;
462 MemoryRegion *PPC_io_memory = g_new(MemoryRegion, 1);
463 PortioList *port_list = g_new(PortioList, 1);
465 MemoryRegion *xcsr = g_new(MemoryRegion, 1);
467 int linux_boot, i, nb_nics1, bios_size;
468 MemoryRegion *ram = g_new(MemoryRegion, 1);
469 MemoryRegion *bios = g_new(MemoryRegion, 1);
470 uint32_t kernel_base, initrd_base;
471 long kernel_size, initrd_size;
473 PCIHostState *pcihost;
478 qemu_irq *cpu_exit_irq;
480 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
482 sysctrl = g_malloc0(sizeof(sysctrl_t));
484 linux_boot = (kernel_filename != NULL);
487 if (cpu_model == NULL)
489 for (i = 0; i < smp_cpus; i++) {
490 cpu = cpu_ppc_init(cpu_model);
492 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
497 if (env->flags & POWERPC_FLAG_RTC_CLK) {
498 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
499 cpu_ppc_tb_init(env, 7812500UL);
501 /* Set time-base frequency to 100 Mhz */
502 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
504 qemu_register_reset(ppc_prep_reset, cpu);
508 memory_region_init_ram(ram, NULL, "ppc_prep.ram", ram_size);
509 vmstate_register_ram_global(ram);
510 memory_region_add_subregion(sysmem, 0, ram);
512 /* allocate and load BIOS */
513 memory_region_init_ram(bios, NULL, "ppc_prep.bios", BIOS_SIZE);
514 memory_region_set_readonly(bios, true);
515 memory_region_add_subregion(sysmem, (uint32_t)(-BIOS_SIZE), bios);
516 vmstate_register_ram_global(bios);
517 if (bios_name == NULL)
518 bios_name = BIOS_FILENAME;
519 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
521 bios_size = load_elf(filename, NULL, NULL, NULL,
522 NULL, NULL, 1, ELF_MACHINE, 0);
524 bios_size = get_image_size(filename);
525 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
527 bios_size = (bios_size + 0xfff) & ~0xfff;
528 bios_addr = (uint32_t)(-bios_size);
529 bios_size = load_image_targphys(filename, bios_addr, bios_size);
531 if (bios_size > BIOS_SIZE) {
532 fprintf(stderr, "qemu: PReP bios '%s' is too large (0x%x)\n",
533 bios_name, bios_size);
540 if (bios_size < 0 && !qtest_enabled()) {
541 fprintf(stderr, "qemu: could not load PPC PReP bios '%s'\n",
550 kernel_base = KERNEL_LOAD_ADDR;
551 /* now we can load the kernel */
552 kernel_size = load_image_targphys(kernel_filename, kernel_base,
553 ram_size - kernel_base);
554 if (kernel_size < 0) {
555 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
559 if (initrd_filename) {
560 initrd_base = INITRD_LOAD_ADDR;
561 initrd_size = load_image_targphys(initrd_filename, initrd_base,
562 ram_size - initrd_base);
563 if (initrd_size < 0) {
564 hw_error("qemu: could not load initial ram disk '%s'\n",
571 ppc_boot_device = 'm';
577 ppc_boot_device = '\0';
578 /* For now, OHW cannot boot from the network. */
579 for (i = 0; boot_device[i] != '\0'; i++) {
580 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
581 ppc_boot_device = boot_device[i];
585 if (ppc_boot_device == '\0') {
586 fprintf(stderr, "No valid boot device for Mac99 machine\n");
591 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
592 hw_error("Only 6xx bus is supported on PREP machine\n");
595 dev = qdev_create(NULL, "raven-pcihost");
596 pcihost = PCI_HOST_BRIDGE(dev);
597 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
598 qdev_init_nofail(dev);
599 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
600 if (pci_bus == NULL) {
601 fprintf(stderr, "Couldn't create PCI host controller.\n");
605 /* PCI -> ISA bridge */
606 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
607 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
608 cpu = POWERPC_CPU(first_cpu);
609 qdev_connect_gpio_out(&pci->qdev, 0,
610 cpu->env.irq_inputs[PPC6xx_INPUT_INT]);
611 qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq);
612 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
613 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
614 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
615 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
616 isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0"));
618 /* Super I/O (parallel + serial ports) */
619 isa = isa_create(isa_bus, TYPE_PC87312);
621 qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */
622 qdev_init_nofail(dev);
624 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
625 memory_region_init_io(PPC_io_memory, NULL, &PPC_prep_io_ops, sysctrl,
626 "ppc-io", 0x00800000);
627 memory_region_add_subregion(sysmem, 0x80000000, PPC_io_memory);
629 /* init basic PC hardware */
630 pci_vga_init(pci_bus);
633 if (nb_nics1 > NE2000_NB_MAX)
634 nb_nics1 = NE2000_NB_MAX;
635 for(i = 0; i < nb_nics1; i++) {
636 if (nd_table[i].model == NULL) {
637 nd_table[i].model = g_strdup("ne2k_isa");
639 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
640 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
643 pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL);
647 ide_drive_get(hd, MAX_IDE_BUS);
648 for(i = 0; i < MAX_IDE_BUS; i++) {
649 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
653 isa_create_simple(isa_bus, "i8042");
655 cpu = POWERPC_CPU(first_cpu);
656 sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET];
658 portio_list_init(port_list, NULL, prep_portio_list, sysctrl, "prep");
659 portio_list_add(port_list, get_system_io(), 0x0);
661 /* PowerPC control and status register group */
663 memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
664 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
667 if (usb_enabled(false)) {
668 pci_create_simple(pci_bus, -1, "pci-ohci");
671 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
674 sysctrl->nvram = m48t59;
676 /* Initialise NVRAM */
677 nvram.opaque = m48t59;
678 nvram.read_fn = &m48t59_read;
679 nvram.write_fn = &m48t59_write;
680 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
681 kernel_base, kernel_size,
683 initrd_base, initrd_size,
684 /* XXX: need an option to load a NVRAM image */
686 graphic_width, graphic_height, graphic_depth);
689 static QEMUMachine prep_machine = {
691 .desc = "PowerPC PREP platform",
692 .init = ppc_prep_init,
693 .max_cpus = MAX_CPUS,
694 DEFAULT_MACHINE_OPTIONS,
697 static void prep_machine_init(void)
699 qemu_register_machine(&prep_machine);
702 machine_init(prep_machine_init);