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/block-backend.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 NvramClass *k = NVRAM_GET_CLASS(sysctrl->nvram);
240 (k->toggle_lock)(sysctrl->nvram, 1);
244 /* Password protect 2 register */
245 if (sysctrl->nvram != NULL) {
246 NvramClass *k = NVRAM_GET_CLASS(sysctrl->nvram);
247 (k->toggle_lock)(sysctrl->nvram, 2);
251 /* L2 invalidate register */
252 // tlb_flush(first_cpu, 1);
255 /* system control register */
256 sysctrl->syscontrol = val & 0x0F;
259 /* I/O map type register */
260 sysctrl->contiguous_map = val & 0x01;
261 qemu_set_irq(sysctrl->contiguous_map_irq, sysctrl->contiguous_map);
264 printf("ERROR: unaffected IO port write: %04" PRIx32
265 " => %02" PRIx32"\n", addr, val);
270 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
272 sysctrl_t *sysctrl = opaque;
273 uint32_t retval = 0xFF;
277 /* Special port 92 */
278 retval = sysctrl->endian << 1;
281 /* Motorola CPU configuration register */
282 retval = 0xEF; /* MPC750 */
285 /* Motorola Base module feature register */
286 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
289 /* Motorola base module status register */
290 retval = 0xE0; /* Standard MPC750 */
293 /* Equipment present register:
295 * no upgrade processor
296 * no cards in PCI slots
302 /* Motorola base module extended feature register */
303 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
306 /* L2 invalidate: don't care */
313 /* system control register
314 * 7 - 6 / 1 - 0: L2 cache enable
316 retval = sysctrl->syscontrol;
320 retval = 0x03; /* no L2 cache */
323 /* I/O map type register */
324 retval = sysctrl->contiguous_map;
327 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
330 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
331 addr - PPC_IO_BASE, retval);
337 #define NVRAM_SIZE 0x2000
339 static void ppc_prep_reset(void *opaque)
341 PowerPCCPU *cpu = opaque;
346 static const MemoryRegionPortio prep_portio_list[] = {
347 /* System control ports */
348 { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
350 .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
351 /* Special port to get debug messages from Open-Firmware */
352 { 0x0F00, 4, 1, .write = PPC_debug_write, },
353 PORTIO_END_OF_LIST(),
356 static PortioList prep_port_list;
358 /*****************************************************************************/
360 static inline uint32_t nvram_read(Nvram *nvram, uint32_t addr)
362 NvramClass *k = NVRAM_GET_CLASS(sysctrl->nvram);
363 return (k->read)(nvram, addr);
366 static inline void nvram_write(Nvram *nvram, uint32_t addr, uint32_t val)
368 NvramClass *k = NVRAM_GET_CLASS(sysctrl->nvram);
369 (k->write)(nvram, addr, val);
372 static void NVRAM_set_byte(Nvram *nvram, uint32_t addr, uint8_t value)
374 nvram_write(nvram, addr, value);
377 static uint8_t NVRAM_get_byte(Nvram *nvram, uint32_t addr)
379 return nvram_read(nvram, addr);
382 static void NVRAM_set_word(Nvram *nvram, uint32_t addr, uint16_t value)
384 nvram_write(nvram, addr, value >> 8);
385 nvram_write(nvram, addr + 1, value & 0xFF);
388 static uint16_t NVRAM_get_word(Nvram *nvram, uint32_t addr)
392 tmp = nvram_read(nvram, addr) << 8;
393 tmp |= nvram_read(nvram, addr + 1);
398 static void NVRAM_set_lword(Nvram *nvram, uint32_t addr, uint32_t value)
400 nvram_write(nvram, addr, value >> 24);
401 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
402 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
403 nvram_write(nvram, addr + 3, value & 0xFF);
406 static void NVRAM_set_string(Nvram *nvram, uint32_t addr, const char *str,
411 for (i = 0; i < max && str[i] != '\0'; i++) {
412 nvram_write(nvram, addr + i, str[i]);
414 nvram_write(nvram, addr + i, str[i]);
415 nvram_write(nvram, addr + max - 1, '\0');
418 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
421 uint16_t pd, pd1, pd2;
426 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
427 tmp ^= (pd1 << 3) | (pd1 << 8);
428 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
433 static uint16_t NVRAM_compute_crc (Nvram *nvram, uint32_t start, uint32_t count)
436 uint16_t crc = 0xFFFF;
441 for (i = 0; i != count; i++) {
442 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
445 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
451 #define CMDLINE_ADDR 0x017ff000
453 static int PPC_NVRAM_set_params (Nvram *nvram, uint16_t NVRAM_size,
455 uint32_t RAM_size, int boot_device,
456 uint32_t kernel_image, uint32_t kernel_size,
458 uint32_t initrd_image, uint32_t initrd_size,
459 uint32_t NVRAM_image,
460 int width, int height, int depth)
464 /* Set parameters for Open Hack'Ware BIOS */
465 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
466 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
467 NVRAM_set_word(nvram, 0x14, NVRAM_size);
468 NVRAM_set_string(nvram, 0x20, arch, 16);
469 NVRAM_set_lword(nvram, 0x30, RAM_size);
470 NVRAM_set_byte(nvram, 0x34, boot_device);
471 NVRAM_set_lword(nvram, 0x38, kernel_image);
472 NVRAM_set_lword(nvram, 0x3C, kernel_size);
474 /* XXX: put the cmdline in NVRAM too ? */
475 pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR,
477 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
478 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
480 NVRAM_set_lword(nvram, 0x40, 0);
481 NVRAM_set_lword(nvram, 0x44, 0);
483 NVRAM_set_lword(nvram, 0x48, initrd_image);
484 NVRAM_set_lword(nvram, 0x4C, initrd_size);
485 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
487 NVRAM_set_word(nvram, 0x54, width);
488 NVRAM_set_word(nvram, 0x56, height);
489 NVRAM_set_word(nvram, 0x58, depth);
490 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
491 NVRAM_set_word(nvram, 0xFC, crc);
496 /* PowerPC PREP hardware initialisation */
497 static void ppc_prep_init(MachineState *machine)
499 ram_addr_t ram_size = machine->ram_size;
500 const char *kernel_filename = machine->kernel_filename;
501 const char *kernel_cmdline = machine->kernel_cmdline;
502 const char *initrd_filename = machine->initrd_filename;
503 const char *boot_device = machine->boot_order;
504 MemoryRegion *sysmem = get_system_memory();
505 PowerPCCPU *cpu = NULL;
506 CPUPPCState *env = NULL;
509 MemoryRegion *xcsr = g_new(MemoryRegion, 1);
511 int linux_boot, i, nb_nics1;
512 MemoryRegion *ram = g_new(MemoryRegion, 1);
513 uint32_t kernel_base, initrd_base;
514 long kernel_size, initrd_size;
516 PCIHostState *pcihost;
522 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
524 sysctrl = g_malloc0(sizeof(sysctrl_t));
526 linux_boot = (kernel_filename != NULL);
529 if (machine->cpu_model == NULL)
530 machine->cpu_model = "602";
531 for (i = 0; i < smp_cpus; i++) {
532 cpu = cpu_ppc_init(machine->cpu_model);
534 fprintf(stderr, "Unable to find PowerPC CPU definition\n");
539 if (env->flags & POWERPC_FLAG_RTC_CLK) {
540 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
541 cpu_ppc_tb_init(env, 7812500UL);
543 /* Set time-base frequency to 100 Mhz */
544 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
546 qemu_register_reset(ppc_prep_reset, cpu);
550 memory_region_allocate_system_memory(ram, NULL, "ppc_prep.ram", ram_size);
551 memory_region_add_subregion(sysmem, 0, ram);
554 kernel_base = KERNEL_LOAD_ADDR;
555 /* now we can load the kernel */
556 kernel_size = load_image_targphys(kernel_filename, kernel_base,
557 ram_size - kernel_base);
558 if (kernel_size < 0) {
559 hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
563 if (initrd_filename) {
564 initrd_base = INITRD_LOAD_ADDR;
565 initrd_size = load_image_targphys(initrd_filename, initrd_base,
566 ram_size - initrd_base);
567 if (initrd_size < 0) {
568 hw_error("qemu: could not load initial ram disk '%s'\n",
575 ppc_boot_device = 'm';
581 ppc_boot_device = '\0';
582 /* For now, OHW cannot boot from the network. */
583 for (i = 0; boot_device[i] != '\0'; i++) {
584 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
585 ppc_boot_device = boot_device[i];
589 if (ppc_boot_device == '\0') {
590 fprintf(stderr, "No valid boot device for Mac99 machine\n");
595 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
596 hw_error("Only 6xx bus is supported on PREP machine\n");
599 dev = qdev_create(NULL, "raven-pcihost");
600 if (bios_name == NULL) {
601 bios_name = BIOS_FILENAME;
603 qdev_prop_set_string(dev, "bios-name", bios_name);
604 qdev_prop_set_uint32(dev, "elf-machine", ELF_MACHINE);
605 pcihost = PCI_HOST_BRIDGE(dev);
606 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
607 qdev_init_nofail(dev);
608 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
609 if (pci_bus == NULL) {
610 fprintf(stderr, "Couldn't create PCI host controller.\n");
613 sysctrl->contiguous_map_irq = qdev_get_gpio_in(dev, 0);
615 /* PCI -> ISA bridge */
616 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
617 cpu = POWERPC_CPU(first_cpu);
618 qdev_connect_gpio_out(&pci->qdev, 0,
619 cpu->env.irq_inputs[PPC6xx_INPUT_INT]);
620 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
621 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
622 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
623 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
624 isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0"));
626 /* Super I/O (parallel + serial ports) */
627 isa = isa_create(isa_bus, TYPE_PC87312);
629 qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */
630 qdev_init_nofail(dev);
632 /* init basic PC hardware */
633 pci_vga_init(pci_bus);
636 if (nb_nics1 > NE2000_NB_MAX)
637 nb_nics1 = NE2000_NB_MAX;
638 for(i = 0; i < nb_nics1; i++) {
639 if (nd_table[i].model == NULL) {
640 nd_table[i].model = g_strdup("ne2k_isa");
642 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
643 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
646 pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL);
650 ide_drive_get(hd, ARRAY_SIZE(hd));
651 for(i = 0; i < MAX_IDE_BUS; i++) {
652 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
656 isa_create_simple(isa_bus, "i8042");
658 cpu = POWERPC_CPU(first_cpu);
659 sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET];
661 portio_list_init(&prep_port_list, NULL, prep_portio_list, sysctrl, "prep");
662 portio_list_add(&prep_port_list, isa_address_space_io(isa), 0x0);
664 /* PowerPC control and status register group */
666 memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
667 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
671 pci_create_simple(pci_bus, -1, "pci-ohci");
674 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 2000, 59);
677 sysctrl->nvram = m48t59;
679 /* Initialise NVRAM */
680 PPC_NVRAM_set_params(m48t59, NVRAM_SIZE, "PREP", ram_size,
682 kernel_base, kernel_size,
684 initrd_base, initrd_size,
685 /* XXX: need an option to load a NVRAM image */
687 graphic_width, graphic_height, graphic_depth);
690 static void prep_machine_init(MachineClass *mc)
692 mc->desc = "PowerPC PREP platform";
693 mc->init = ppc_prep_init;
694 mc->max_cpus = MAX_CPUS;
695 mc->default_boot_order = "cad";
698 DEFINE_MACHINE("prep", prep_machine_init)