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 "exec/address-spaces.h"
45 //#define HARD_DEBUG_PPC_IO
46 //#define DEBUG_PPC_IO
48 /* SMP is not enabled, for now */
53 #define BIOS_SIZE (1024 * 1024)
54 #define BIOS_FILENAME "ppc_rom.bin"
55 #define KERNEL_LOAD_ADDR 0x01000000
56 #define INITRD_LOAD_ADDR 0x01800000
58 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
62 #if defined (HARD_DEBUG_PPC_IO)
63 #define PPC_IO_DPRINTF(fmt, ...) \
65 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
66 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
68 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
71 #elif defined (DEBUG_PPC_IO)
72 #define PPC_IO_DPRINTF(fmt, ...) \
73 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
75 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
78 /* Constants for devices init */
79 static const int ide_iobase[2] = { 0x1f0, 0x170 };
80 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
81 static const int ide_irq[2] = { 13, 13 };
83 #define NE2000_NB_MAX 6
85 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
86 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
88 /* ISA IO ports bridge */
89 #define PPC_IO_BASE 0x80000000
91 /* PowerPC control and status registers */
97 /* Control and status */
102 /* General purpose registers */
115 /* Error diagnostic */
118 static void PPC_XCSR_writeb (void *opaque,
119 hwaddr addr, uint32_t value)
121 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
125 static void PPC_XCSR_writew (void *opaque,
126 hwaddr addr, uint32_t value)
128 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
132 static void PPC_XCSR_writel (void *opaque,
133 hwaddr addr, uint32_t value)
135 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
139 static uint32_t PPC_XCSR_readb (void *opaque, hwaddr addr)
143 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
149 static uint32_t PPC_XCSR_readw (void *opaque, hwaddr addr)
153 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
159 static uint32_t PPC_XCSR_readl (void *opaque, hwaddr addr)
163 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
169 static const MemoryRegionOps PPC_XCSR_ops = {
171 .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, },
172 .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, },
174 .endianness = DEVICE_LITTLE_ENDIAN,
179 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
180 typedef struct sysctrl_t {
190 STATE_HARDFILE = 0x01,
193 static sysctrl_t *sysctrl;
195 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
197 sysctrl_t *sysctrl = opaque;
199 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
200 addr - PPC_IO_BASE, val);
203 /* Special port 92 */
204 /* Check soft reset asked */
206 qemu_irq_raise(sysctrl->reset_irq);
208 qemu_irq_lower(sysctrl->reset_irq);
218 /* Motorola CPU configuration register : read-only */
221 /* Motorola base module feature register : read-only */
224 /* Motorola base module status register : read-only */
227 /* Hardfile light register */
229 sysctrl->state |= STATE_HARDFILE;
231 sysctrl->state &= ~STATE_HARDFILE;
234 /* Password protect 1 register */
235 if (sysctrl->nvram != NULL)
236 m48t59_toggle_lock(sysctrl->nvram, 1);
239 /* Password protect 2 register */
240 if (sysctrl->nvram != NULL)
241 m48t59_toggle_lock(sysctrl->nvram, 2);
244 /* L2 invalidate register */
245 // tlb_flush(first_cpu, 1);
248 /* system control register */
249 sysctrl->syscontrol = val & 0x0F;
252 /* I/O map type register */
253 sysctrl->contiguous_map = val & 0x01;
256 printf("ERROR: unaffected IO port write: %04" PRIx32
257 " => %02" PRIx32"\n", addr, val);
262 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
264 sysctrl_t *sysctrl = opaque;
265 uint32_t retval = 0xFF;
269 /* Special port 92 */
273 /* Motorola CPU configuration register */
274 retval = 0xEF; /* MPC750 */
277 /* Motorola Base module feature register */
278 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
281 /* Motorola base module status register */
282 retval = 0xE0; /* Standard MPC750 */
285 /* Equipment present register:
287 * no upgrade processor
288 * no cards in PCI slots
294 /* Motorola base module extended feature register */
295 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
298 /* L2 invalidate: don't care */
305 /* system control register
306 * 7 - 6 / 1 - 0: L2 cache enable
308 retval = sysctrl->syscontrol;
312 retval = 0x03; /* no L2 cache */
315 /* I/O map type register */
316 retval = sysctrl->contiguous_map;
319 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
322 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
323 addr - PPC_IO_BASE, retval);
328 static inline hwaddr prep_IO_address(sysctrl_t *sysctrl,
331 if (sysctrl->contiguous_map == 0) {
332 /* 64 KB contiguous space for IOs */
335 /* 8 MB non-contiguous space for IOs */
336 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
342 static void PPC_prep_io_writeb (void *opaque, hwaddr addr,
345 sysctrl_t *sysctrl = opaque;
347 addr = prep_IO_address(sysctrl, addr);
348 cpu_outb(addr, value);
351 static uint32_t PPC_prep_io_readb (void *opaque, hwaddr addr)
353 sysctrl_t *sysctrl = opaque;
356 addr = prep_IO_address(sysctrl, addr);
362 static void PPC_prep_io_writew (void *opaque, hwaddr addr,
365 sysctrl_t *sysctrl = opaque;
367 addr = prep_IO_address(sysctrl, addr);
368 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
369 cpu_outw(addr, value);
372 static uint32_t PPC_prep_io_readw (void *opaque, hwaddr addr)
374 sysctrl_t *sysctrl = opaque;
377 addr = prep_IO_address(sysctrl, addr);
379 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
384 static void PPC_prep_io_writel (void *opaque, hwaddr addr,
387 sysctrl_t *sysctrl = opaque;
389 addr = prep_IO_address(sysctrl, addr);
390 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
391 cpu_outl(addr, value);
394 static uint32_t PPC_prep_io_readl (void *opaque, hwaddr addr)
396 sysctrl_t *sysctrl = opaque;
399 addr = prep_IO_address(sysctrl, addr);
401 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
406 static const MemoryRegionOps PPC_prep_io_ops = {
408 .read = { PPC_prep_io_readb, PPC_prep_io_readw, PPC_prep_io_readl },
409 .write = { PPC_prep_io_writeb, PPC_prep_io_writew, PPC_prep_io_writel },
411 .endianness = DEVICE_LITTLE_ENDIAN,
414 #define NVRAM_SIZE 0x2000
416 static void cpu_request_exit(void *opaque, int irq, int level)
418 CPUPPCState *env = cpu_single_env;
425 static void ppc_prep_reset(void *opaque)
427 PowerPCCPU *cpu = opaque;
432 /* PowerPC PREP hardware initialisation */
433 static void ppc_prep_init(QEMUMachineInitArgs *args)
435 ram_addr_t ram_size = args->ram_size;
436 const char *cpu_model = args->cpu_model;
437 const char *kernel_filename = args->kernel_filename;
438 const char *kernel_cmdline = args->kernel_cmdline;
439 const char *initrd_filename = args->initrd_filename;
440 const char *boot_device = args->boot_device;
441 MemoryRegion *sysmem = get_system_memory();
442 PowerPCCPU *cpu = NULL;
443 CPUPPCState *env = NULL;
447 MemoryRegion *PPC_io_memory = g_new(MemoryRegion, 1);
449 MemoryRegion *xcsr = g_new(MemoryRegion, 1);
451 int linux_boot, i, nb_nics1, bios_size;
452 MemoryRegion *ram = g_new(MemoryRegion, 1);
453 MemoryRegion *bios = g_new(MemoryRegion, 1);
454 uint32_t kernel_base, initrd_base;
455 long kernel_size, initrd_size;
457 PCIHostState *pcihost;
462 qemu_irq *cpu_exit_irq;
464 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
466 sysctrl = g_malloc0(sizeof(sysctrl_t));
468 linux_boot = (kernel_filename != NULL);
471 if (cpu_model == NULL)
473 for (i = 0; i < smp_cpus; i++) {
474 cpu = cpu_ppc_init(cpu_model);
476 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
481 if (env->flags & POWERPC_FLAG_RTC_CLK) {
482 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
483 cpu_ppc_tb_init(env, 7812500UL);
485 /* Set time-base frequency to 100 Mhz */
486 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
488 qemu_register_reset(ppc_prep_reset, cpu);
492 memory_region_init_ram(ram, "ppc_prep.ram", ram_size);
493 vmstate_register_ram_global(ram);
494 memory_region_add_subregion(sysmem, 0, ram);
496 /* allocate and load BIOS */
497 memory_region_init_ram(bios, "ppc_prep.bios", BIOS_SIZE);
498 memory_region_set_readonly(bios, true);
499 memory_region_add_subregion(sysmem, (uint32_t)(-BIOS_SIZE), bios);
500 vmstate_register_ram_global(bios);
501 if (bios_name == NULL)
502 bios_name = BIOS_FILENAME;
503 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
505 bios_size = get_image_size(filename);
509 if (bios_size > 0 && bios_size <= BIOS_SIZE) {
511 bios_size = (bios_size + 0xfff) & ~0xfff;
512 bios_addr = (uint32_t)(-bios_size);
513 bios_size = load_image_targphys(filename, bios_addr, bios_size);
515 if (bios_size < 0 || bios_size > BIOS_SIZE) {
516 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
523 kernel_base = KERNEL_LOAD_ADDR;
524 /* now we can load the kernel */
525 kernel_size = load_image_targphys(kernel_filename, kernel_base,
526 ram_size - kernel_base);
527 if (kernel_size < 0) {
528 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
532 if (initrd_filename) {
533 initrd_base = INITRD_LOAD_ADDR;
534 initrd_size = load_image_targphys(initrd_filename, initrd_base,
535 ram_size - initrd_base);
536 if (initrd_size < 0) {
537 hw_error("qemu: could not load initial ram disk '%s'\n",
544 ppc_boot_device = 'm';
550 ppc_boot_device = '\0';
551 /* For now, OHW cannot boot from the network. */
552 for (i = 0; boot_device[i] != '\0'; i++) {
553 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
554 ppc_boot_device = boot_device[i];
558 if (ppc_boot_device == '\0') {
559 fprintf(stderr, "No valid boot device for Mac99 machine\n");
564 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
565 hw_error("Only 6xx bus is supported on PREP machine\n");
568 dev = qdev_create(NULL, "raven-pcihost");
569 pcihost = PCI_HOST_BRIDGE(dev);
570 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
571 qdev_init_nofail(dev);
572 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
573 if (pci_bus == NULL) {
574 fprintf(stderr, "Couldn't create PCI host controller.\n");
578 /* PCI -> ISA bridge */
579 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
580 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
581 qdev_connect_gpio_out(&pci->qdev, 0,
582 first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
583 qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq);
584 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
585 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
586 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
587 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
588 isa_bus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&pci->qdev, "isa.0"));
590 /* Super I/O (parallel + serial ports) */
591 isa = isa_create(isa_bus, TYPE_PC87312);
592 qdev_prop_set_uint8(&isa->qdev, "config", 13); /* fdc, ser0, ser1, par0 */
593 qdev_init_nofail(&isa->qdev);
595 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
596 memory_region_init_io(PPC_io_memory, &PPC_prep_io_ops, sysctrl,
597 "ppc-io", 0x00800000);
598 memory_region_add_subregion(sysmem, 0x80000000, PPC_io_memory);
600 /* init basic PC hardware */
601 pci_vga_init(pci_bus);
604 if (nb_nics1 > NE2000_NB_MAX)
605 nb_nics1 = NE2000_NB_MAX;
606 for(i = 0; i < nb_nics1; i++) {
607 if (nd_table[i].model == NULL) {
608 nd_table[i].model = g_strdup("ne2k_isa");
610 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
611 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
614 pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
618 ide_drive_get(hd, MAX_IDE_BUS);
619 for(i = 0; i < MAX_IDE_BUS; i++) {
620 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
624 isa_create_simple(isa_bus, "i8042");
626 sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
627 /* System control ports */
628 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
629 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
630 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
631 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
632 /* PowerPC control and status register group */
634 memory_region_init_io(xcsr, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
635 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
638 if (usb_enabled(false)) {
639 pci_create_simple(pci_bus, -1, "pci-ohci");
642 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
645 sysctrl->nvram = m48t59;
647 /* Initialise NVRAM */
648 nvram.opaque = m48t59;
649 nvram.read_fn = &m48t59_read;
650 nvram.write_fn = &m48t59_write;
651 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
652 kernel_base, kernel_size,
654 initrd_base, initrd_size,
655 /* XXX: need an option to load a NVRAM image */
657 graphic_width, graphic_height, graphic_depth);
659 /* Special port to get debug messages from Open-Firmware */
660 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
662 /* Initialize audio subsystem */
663 audio_init(isa_bus, pci_bus);
666 static QEMUMachine prep_machine = {
668 .desc = "PowerPC PREP platform",
669 .init = ppc_prep_init,
670 .max_cpus = MAX_CPUS,
671 DEFAULT_MACHINE_OPTIONS,
674 static void prep_machine_init(void)
676 qemu_register_machine(&prep_machine);
679 machine_init(prep_machine_init);