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 {
188 qemu_irq contiguous_map_irq;
193 STATE_HARDFILE = 0x01,
196 static sysctrl_t *sysctrl;
198 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
200 sysctrl_t *sysctrl = opaque;
202 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
203 addr - PPC_IO_BASE, val);
206 /* Special port 92 */
207 /* Check soft reset asked */
209 qemu_irq_raise(sysctrl->reset_irq);
211 qemu_irq_lower(sysctrl->reset_irq);
221 /* Motorola CPU configuration register : read-only */
224 /* Motorola base module feature register : read-only */
227 /* Motorola base module status register : read-only */
230 /* Hardfile light register */
232 sysctrl->state |= STATE_HARDFILE;
234 sysctrl->state &= ~STATE_HARDFILE;
237 /* Password protect 1 register */
238 if (sysctrl->nvram != NULL)
239 m48t59_toggle_lock(sysctrl->nvram, 1);
242 /* Password protect 2 register */
243 if (sysctrl->nvram != NULL)
244 m48t59_toggle_lock(sysctrl->nvram, 2);
247 /* L2 invalidate register */
248 // tlb_flush(first_cpu, 1);
251 /* system control register */
252 sysctrl->syscontrol = val & 0x0F;
255 /* I/O map type register */
256 sysctrl->contiguous_map = val & 0x01;
257 qemu_set_irq(sysctrl->contiguous_map_irq, sysctrl->contiguous_map);
260 printf("ERROR: unaffected IO port write: %04" PRIx32
261 " => %02" PRIx32"\n", addr, val);
266 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
268 sysctrl_t *sysctrl = opaque;
269 uint32_t retval = 0xFF;
273 /* Special port 92 */
274 retval = sysctrl->endian << 1;
277 /* Motorola CPU configuration register */
278 retval = 0xEF; /* MPC750 */
281 /* Motorola Base module feature register */
282 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
285 /* Motorola base module status register */
286 retval = 0xE0; /* Standard MPC750 */
289 /* Equipment present register:
291 * no upgrade processor
292 * no cards in PCI slots
298 /* Motorola base module extended feature register */
299 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
302 /* L2 invalidate: don't care */
309 /* system control register
310 * 7 - 6 / 1 - 0: L2 cache enable
312 retval = sysctrl->syscontrol;
316 retval = 0x03; /* no L2 cache */
319 /* I/O map type register */
320 retval = sysctrl->contiguous_map;
323 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
326 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
327 addr - PPC_IO_BASE, retval);
333 #define NVRAM_SIZE 0x2000
335 static void cpu_request_exit(void *opaque, int irq, int level)
337 CPUState *cpu = current_cpu;
344 static void ppc_prep_reset(void *opaque)
346 PowerPCCPU *cpu = opaque;
351 cpu->env.nip = 0xfffffffc;
354 static const MemoryRegionPortio prep_portio_list[] = {
355 /* System control ports */
356 { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
358 .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
359 /* Special port to get debug messages from Open-Firmware */
360 { 0x0F00, 4, 1, .write = PPC_debug_write, },
361 PORTIO_END_OF_LIST(),
364 static PortioList prep_port_list;
366 /* PowerPC PREP hardware initialisation */
367 static void ppc_prep_init(QEMUMachineInitArgs *args)
369 ram_addr_t ram_size = args->ram_size;
370 const char *cpu_model = args->cpu_model;
371 const char *kernel_filename = args->kernel_filename;
372 const char *kernel_cmdline = args->kernel_cmdline;
373 const char *initrd_filename = args->initrd_filename;
374 const char *boot_device = args->boot_order;
375 MemoryRegion *sysmem = get_system_memory();
376 PowerPCCPU *cpu = NULL;
377 CPUPPCState *env = NULL;
381 MemoryRegion *xcsr = g_new(MemoryRegion, 1);
383 int linux_boot, i, nb_nics1;
384 MemoryRegion *ram = g_new(MemoryRegion, 1);
385 MemoryRegion *vga = g_new(MemoryRegion, 1);
386 uint32_t kernel_base, initrd_base;
387 long kernel_size, initrd_size;
389 PCIHostState *pcihost;
394 qemu_irq *cpu_exit_irq;
396 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
398 sysctrl = g_malloc0(sizeof(sysctrl_t));
400 linux_boot = (kernel_filename != NULL);
403 if (cpu_model == NULL)
405 for (i = 0; i < smp_cpus; i++) {
406 cpu = cpu_ppc_init(cpu_model);
408 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
413 if (env->flags & POWERPC_FLAG_RTC_CLK) {
414 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
415 cpu_ppc_tb_init(env, 7812500UL);
417 /* Set time-base frequency to 100 Mhz */
418 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
420 qemu_register_reset(ppc_prep_reset, cpu);
424 memory_region_init_ram(ram, NULL, "ppc_prep.ram", ram_size);
425 vmstate_register_ram_global(ram);
426 memory_region_add_subregion(sysmem, 0, ram);
429 kernel_base = KERNEL_LOAD_ADDR;
430 /* now we can load the kernel */
431 kernel_size = load_image_targphys(kernel_filename, kernel_base,
432 ram_size - kernel_base);
433 if (kernel_size < 0) {
434 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
438 if (initrd_filename) {
439 initrd_base = INITRD_LOAD_ADDR;
440 initrd_size = load_image_targphys(initrd_filename, initrd_base,
441 ram_size - initrd_base);
442 if (initrd_size < 0) {
443 hw_error("qemu: could not load initial ram disk '%s'\n",
450 ppc_boot_device = 'm';
456 ppc_boot_device = '\0';
457 /* For now, OHW cannot boot from the network. */
458 for (i = 0; boot_device[i] != '\0'; i++) {
459 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
460 ppc_boot_device = boot_device[i];
464 if (ppc_boot_device == '\0') {
465 fprintf(stderr, "No valid boot device for Mac99 machine\n");
470 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
471 hw_error("Only 6xx bus is supported on PREP machine\n");
474 dev = qdev_create(NULL, "raven-pcihost");
475 if (bios_name == NULL) {
476 bios_name = BIOS_FILENAME;
478 qdev_prop_set_string(dev, "bios-name", bios_name);
479 qdev_prop_set_uint32(dev, "elf-machine", ELF_MACHINE);
480 pcihost = PCI_HOST_BRIDGE(dev);
481 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
482 qdev_init_nofail(dev);
483 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
484 if (pci_bus == NULL) {
485 fprintf(stderr, "Couldn't create PCI host controller.\n");
488 sysctrl->contiguous_map_irq = qdev_get_gpio_in(dev, 0);
490 /* PCI -> ISA bridge */
491 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
492 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
493 cpu = POWERPC_CPU(first_cpu);
494 qdev_connect_gpio_out(&pci->qdev, 0,
495 cpu->env.irq_inputs[PPC6xx_INPUT_INT]);
496 qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq);
497 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
498 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
499 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
500 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
501 isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0"));
503 /* Super I/O (parallel + serial ports) */
504 isa = isa_create(isa_bus, TYPE_PC87312);
506 qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */
507 qdev_init_nofail(dev);
509 /* init basic PC hardware */
510 pci_vga_init(pci_bus);
511 /* Open Hack'Ware hack: PCI BAR#0 is programmed to 0xf0000000.
512 * While bios will access framebuffer at 0xf0000000, real physical
513 * address is 0xf0000000 + 0xc0000000 (PCI memory base).
514 * Alias the wrong memory accesses to the right place.
516 memory_region_init_alias(vga, NULL, "vga-alias", pci_address_space(pci),
517 0xf0000000, 0x1000000);
518 memory_region_add_subregion_overlap(sysmem, 0xf0000000, vga, 10);
521 if (nb_nics1 > NE2000_NB_MAX)
522 nb_nics1 = NE2000_NB_MAX;
523 for(i = 0; i < nb_nics1; i++) {
524 if (nd_table[i].model == NULL) {
525 nd_table[i].model = g_strdup("ne2k_isa");
527 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
528 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
531 pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL);
535 ide_drive_get(hd, MAX_IDE_BUS);
536 for(i = 0; i < MAX_IDE_BUS; i++) {
537 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
541 isa_create_simple(isa_bus, "i8042");
543 cpu = POWERPC_CPU(first_cpu);
544 sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET];
546 portio_list_init(&prep_port_list, NULL, prep_portio_list, sysctrl, "prep");
547 portio_list_add(&prep_port_list, isa_address_space_io(isa), 0x0);
549 /* PowerPC control and status register group */
551 memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
552 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
555 if (usb_enabled(false)) {
556 pci_create_simple(pci_bus, -1, "pci-ohci");
559 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
562 sysctrl->nvram = m48t59;
564 /* Initialise NVRAM */
565 nvram.opaque = m48t59;
566 nvram.read_fn = &m48t59_read;
567 nvram.write_fn = &m48t59_write;
568 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
569 kernel_base, kernel_size,
571 initrd_base, initrd_size,
572 /* XXX: need an option to load a NVRAM image */
574 graphic_width, graphic_height, graphic_depth);
577 static QEMUMachine prep_machine = {
579 .desc = "PowerPC PREP platform",
580 .init = ppc_prep_init,
581 .max_cpus = MAX_CPUS,
582 .default_boot_order = "cad",
585 static void prep_machine_init(void)
587 qemu_register_machine(&prep_machine);
590 machine_init(prep_machine_init);