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
36 //#define HARD_DEBUG_PPC_IO
37 //#define DEBUG_PPC_IO
39 /* SMP is not enabled, for now */
44 #define BIOS_SIZE (1024 * 1024)
45 #define BIOS_FILENAME "ppc_rom.bin"
46 #define KERNEL_LOAD_ADDR 0x01000000
47 #define INITRD_LOAD_ADDR 0x01800000
49 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
53 #if defined (HARD_DEBUG_PPC_IO)
54 #define PPC_IO_DPRINTF(fmt, ...) \
56 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \
57 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
59 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \
62 #elif defined (DEBUG_PPC_IO)
63 #define PPC_IO_DPRINTF(fmt, ...) \
64 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
66 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
69 /* Constants for devices init */
70 static const int ide_iobase
[2] = { 0x1f0, 0x170 };
71 static const int ide_iobase2
[2] = { 0x3f6, 0x376 };
72 static const int ide_irq
[2] = { 13, 13 };
74 #define NE2000_NB_MAX 6
76 static uint32_t ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
77 static int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
79 //static PITState *pit;
81 /* ISA IO ports bridge */
82 #define PPC_IO_BASE 0x80000000
85 /* Speaker port 0x61 */
86 static int speaker_data_on
;
87 static int dummy_refresh_clock
;
90 static void speaker_ioport_write (void *opaque
, uint32_t addr
, uint32_t val
)
93 speaker_data_on
= (val
>> 1) & 1;
94 pit_set_gate(pit
, 2, val
& 1);
98 static uint32_t speaker_ioport_read (void *opaque
, uint32_t addr
)
102 out
= pit_get_out(pit
, 2, qemu_get_clock(vm_clock
));
103 dummy_refresh_clock
^= 1;
104 return (speaker_data_on
<< 1) | pit_get_gate(pit
, 2) | (out
<< 5) |
105 (dummy_refresh_clock
<< 4);
110 /* PCI intack register */
111 /* Read-only register (?) */
112 static void _PPC_intack_write (void *opaque
,
113 target_phys_addr_t addr
, uint32_t value
)
115 // printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
118 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr
)
122 if ((addr
& 0xf) == 0)
123 retval
= pic_intack_read(isa_pic
);
124 // printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
129 static uint32_t PPC_intack_readb (void *opaque
, target_phys_addr_t addr
)
131 return _PPC_intack_read(addr
);
134 static uint32_t PPC_intack_readw (void *opaque
, target_phys_addr_t addr
)
136 #ifdef TARGET_WORDS_BIGENDIAN
137 return bswap16(_PPC_intack_read(addr
));
139 return _PPC_intack_read(addr
);
143 static uint32_t PPC_intack_readl (void *opaque
, target_phys_addr_t addr
)
145 #ifdef TARGET_WORDS_BIGENDIAN
146 return bswap32(_PPC_intack_read(addr
));
148 return _PPC_intack_read(addr
);
152 static CPUWriteMemoryFunc
*PPC_intack_write
[] = {
158 static CPUReadMemoryFunc
*PPC_intack_read
[] = {
164 /* PowerPC control and status registers */
170 /* Control and status */
175 /* General purpose registers */
188 /* Error diagnostic */
191 static void PPC_XCSR_writeb (void *opaque
,
192 target_phys_addr_t addr
, uint32_t value
)
194 printf("%s: 0x" PADDRX
" => 0x%08" PRIx32
"\n", __func__
, addr
, value
);
197 static void PPC_XCSR_writew (void *opaque
,
198 target_phys_addr_t addr
, uint32_t value
)
200 #ifdef TARGET_WORDS_BIGENDIAN
201 value
= bswap16(value
);
203 printf("%s: 0x" PADDRX
" => 0x%08" PRIx32
"\n", __func__
, addr
, value
);
206 static void PPC_XCSR_writel (void *opaque
,
207 target_phys_addr_t addr
, uint32_t value
)
209 #ifdef TARGET_WORDS_BIGENDIAN
210 value
= bswap32(value
);
212 printf("%s: 0x" PADDRX
" => 0x%08" PRIx32
"\n", __func__
, addr
, value
);
215 static uint32_t PPC_XCSR_readb (void *opaque
, target_phys_addr_t addr
)
219 printf("%s: 0x" PADDRX
" <= %08" PRIx32
"\n", __func__
, addr
, retval
);
224 static uint32_t PPC_XCSR_readw (void *opaque
, target_phys_addr_t addr
)
228 printf("%s: 0x" PADDRX
" <= %08" PRIx32
"\n", __func__
, addr
, retval
);
229 #ifdef TARGET_WORDS_BIGENDIAN
230 retval
= bswap16(retval
);
236 static uint32_t PPC_XCSR_readl (void *opaque
, target_phys_addr_t addr
)
240 printf("%s: 0x" PADDRX
" <= %08" PRIx32
"\n", __func__
, addr
, retval
);
241 #ifdef TARGET_WORDS_BIGENDIAN
242 retval
= bswap32(retval
);
248 static CPUWriteMemoryFunc
*PPC_XCSR_write
[] = {
254 static CPUReadMemoryFunc
*PPC_XCSR_read
[] = {
261 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
262 typedef struct sysctrl_t
{
273 STATE_HARDFILE
= 0x01,
276 static sysctrl_t
*sysctrl
;
278 static void PREP_io_write (void *opaque
, uint32_t addr
, uint32_t val
)
280 sysctrl_t
*sysctrl
= opaque
;
282 PPC_IO_DPRINTF("0x%08" PRIx32
" => 0x%02" PRIx32
"\n", addr
- PPC_IO_BASE
,
284 sysctrl
->fake_io
[addr
- 0x0398] = val
;
287 static uint32_t PREP_io_read (void *opaque
, uint32_t addr
)
289 sysctrl_t
*sysctrl
= opaque
;
291 PPC_IO_DPRINTF("0x%08" PRIx32
" <= 0x%02" PRIx32
"\n", addr
- PPC_IO_BASE
,
292 sysctrl
->fake_io
[addr
- 0x0398]);
293 return sysctrl
->fake_io
[addr
- 0x0398];
296 static void PREP_io_800_writeb (void *opaque
, uint32_t addr
, uint32_t val
)
298 sysctrl_t
*sysctrl
= opaque
;
300 PPC_IO_DPRINTF("0x%08" PRIx32
" => 0x%02" PRIx32
"\n",
301 addr
- PPC_IO_BASE
, val
);
304 /* Special port 92 */
305 /* Check soft reset asked */
307 qemu_irq_raise(sysctrl
->reset_irq
);
309 qemu_irq_lower(sysctrl
->reset_irq
);
319 /* Motorola CPU configuration register : read-only */
322 /* Motorola base module feature register : read-only */
325 /* Motorola base module status register : read-only */
328 /* Hardfile light register */
330 sysctrl
->state
|= STATE_HARDFILE
;
332 sysctrl
->state
&= ~STATE_HARDFILE
;
335 /* Password protect 1 register */
336 if (sysctrl
->nvram
!= NULL
)
337 m48t59_toggle_lock(sysctrl
->nvram
, 1);
340 /* Password protect 2 register */
341 if (sysctrl
->nvram
!= NULL
)
342 m48t59_toggle_lock(sysctrl
->nvram
, 2);
345 /* L2 invalidate register */
346 // tlb_flush(first_cpu, 1);
349 /* system control register */
350 sysctrl
->syscontrol
= val
& 0x0F;
353 /* I/O map type register */
354 sysctrl
->contiguous_map
= val
& 0x01;
357 printf("ERROR: unaffected IO port write: %04" PRIx32
358 " => %02" PRIx32
"\n", addr
, val
);
363 static uint32_t PREP_io_800_readb (void *opaque
, uint32_t addr
)
365 sysctrl_t
*sysctrl
= opaque
;
366 uint32_t retval
= 0xFF;
370 /* Special port 92 */
374 /* Motorola CPU configuration register */
375 retval
= 0xEF; /* MPC750 */
378 /* Motorola Base module feature register */
379 retval
= 0xAD; /* No ESCC, PMC slot neither ethernet */
382 /* Motorola base module status register */
383 retval
= 0xE0; /* Standard MPC750 */
386 /* Equipment present register:
388 * no upgrade processor
389 * no cards in PCI slots
395 /* Motorola base module extended feature register */
396 retval
= 0x39; /* No USB, CF and PCI bridge. NVRAM present */
399 /* L2 invalidate: don't care */
406 /* system control register
407 * 7 - 6 / 1 - 0: L2 cache enable
409 retval
= sysctrl
->syscontrol
;
413 retval
= 0x03; /* no L2 cache */
416 /* I/O map type register */
417 retval
= sysctrl
->contiguous_map
;
420 printf("ERROR: unaffected IO port: %04" PRIx32
" read\n", addr
);
423 PPC_IO_DPRINTF("0x%08" PRIx32
" <= 0x%02" PRIx32
"\n",
424 addr
- PPC_IO_BASE
, retval
);
429 static inline target_phys_addr_t
prep_IO_address(sysctrl_t
*sysctrl
,
430 target_phys_addr_t addr
)
432 if (sysctrl
->contiguous_map
== 0) {
433 /* 64 KB contiguous space for IOs */
436 /* 8 MB non-contiguous space for IOs */
437 addr
= (addr
& 0x1F) | ((addr
& 0x007FFF000) >> 7);
443 static void PPC_prep_io_writeb (void *opaque
, target_phys_addr_t addr
,
446 sysctrl_t
*sysctrl
= opaque
;
448 addr
= prep_IO_address(sysctrl
, addr
);
449 cpu_outb(NULL
, addr
, value
);
452 static uint32_t PPC_prep_io_readb (void *opaque
, target_phys_addr_t addr
)
454 sysctrl_t
*sysctrl
= opaque
;
457 addr
= prep_IO_address(sysctrl
, addr
);
458 ret
= cpu_inb(NULL
, addr
);
463 static void PPC_prep_io_writew (void *opaque
, target_phys_addr_t addr
,
466 sysctrl_t
*sysctrl
= opaque
;
468 addr
= prep_IO_address(sysctrl
, addr
);
469 #ifdef TARGET_WORDS_BIGENDIAN
470 value
= bswap16(value
);
472 PPC_IO_DPRINTF("0x" PADDRX
" => 0x%08" PRIx32
"\n", addr
, value
);
473 cpu_outw(NULL
, addr
, value
);
476 static uint32_t PPC_prep_io_readw (void *opaque
, target_phys_addr_t addr
)
478 sysctrl_t
*sysctrl
= opaque
;
481 addr
= prep_IO_address(sysctrl
, addr
);
482 ret
= cpu_inw(NULL
, addr
);
483 #ifdef TARGET_WORDS_BIGENDIAN
486 PPC_IO_DPRINTF("0x" PADDRX
" <= 0x%08" PRIx32
"\n", addr
, ret
);
491 static void PPC_prep_io_writel (void *opaque
, target_phys_addr_t addr
,
494 sysctrl_t
*sysctrl
= opaque
;
496 addr
= prep_IO_address(sysctrl
, addr
);
497 #ifdef TARGET_WORDS_BIGENDIAN
498 value
= bswap32(value
);
500 PPC_IO_DPRINTF("0x" PADDRX
" => 0x%08" PRIx32
"\n", addr
, value
);
501 cpu_outl(NULL
, addr
, value
);
504 static uint32_t PPC_prep_io_readl (void *opaque
, target_phys_addr_t addr
)
506 sysctrl_t
*sysctrl
= opaque
;
509 addr
= prep_IO_address(sysctrl
, addr
);
510 ret
= cpu_inl(NULL
, addr
);
511 #ifdef TARGET_WORDS_BIGENDIAN
514 PPC_IO_DPRINTF("0x" PADDRX
" <= 0x%08" PRIx32
"\n", addr
, ret
);
519 static CPUWriteMemoryFunc
*PPC_prep_io_write
[] = {
525 static CPUReadMemoryFunc
*PPC_prep_io_read
[] = {
531 #define NVRAM_SIZE 0x2000
533 /* PowerPC PREP hardware initialisation */
534 static void ppc_prep_init (ram_addr_t ram_size
,
535 const char *boot_device
,
536 const char *kernel_filename
,
537 const char *kernel_cmdline
,
538 const char *initrd_filename
,
539 const char *cpu_model
)
541 CPUState
*env
= NULL
, *envs
[MAX_CPUS
];
546 int linux_boot
, i
, nb_nics1
, bios_size
;
547 ram_addr_t ram_offset
, bios_offset
;
548 uint32_t kernel_base
, kernel_size
, initrd_base
, initrd_size
;
553 BlockDriverState
*hd
[MAX_IDE_BUS
* MAX_IDE_DEVS
];
554 BlockDriverState
*fd
[MAX_FD
];
556 sysctrl
= qemu_mallocz(sizeof(sysctrl_t
));
558 linux_boot
= (kernel_filename
!= NULL
);
561 if (cpu_model
== NULL
)
562 cpu_model
= "default";
563 for (i
= 0; i
< smp_cpus
; i
++) {
564 env
= cpu_init(cpu_model
);
566 fprintf(stderr
, "Unable to find PowerPC CPU definition\n");
569 if (env
->flags
& POWERPC_FLAG_RTC_CLK
) {
570 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
571 cpu_ppc_tb_init(env
, 7812500UL);
573 /* Set time-base frequency to 100 Mhz */
574 cpu_ppc_tb_init(env
, 100UL * 1000UL * 1000UL);
576 qemu_register_reset(&cpu_ppc_reset
, env
);
581 ram_offset
= qemu_ram_alloc(ram_size
);
582 cpu_register_physical_memory(0, ram_size
, ram_offset
);
584 /* allocate and load BIOS */
585 bios_offset
= qemu_ram_alloc(BIOS_SIZE
);
586 if (bios_name
== NULL
)
587 bios_name
= BIOS_FILENAME
;
588 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, bios_name
);
590 bios_size
= get_image_size(filename
);
594 if (bios_size
> 0 && bios_size
<= BIOS_SIZE
) {
595 target_phys_addr_t bios_addr
;
596 bios_size
= (bios_size
+ 0xfff) & ~0xfff;
597 bios_addr
= (uint32_t)(-bios_size
);
598 cpu_register_physical_memory(bios_addr
, bios_size
,
599 bios_offset
| IO_MEM_ROM
);
600 bios_size
= load_image_targphys(filename
, bios_addr
, bios_size
);
602 if (bios_size
< 0 || bios_size
> BIOS_SIZE
) {
603 hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name
);
608 if (env
->nip
< 0xFFF80000 && bios_size
< 0x00100000) {
609 hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
613 kernel_base
= KERNEL_LOAD_ADDR
;
614 /* now we can load the kernel */
615 kernel_size
= load_image_targphys(kernel_filename
, kernel_base
,
616 ram_size
- kernel_base
);
617 if (kernel_size
< 0) {
618 hw_error("qemu: could not load kernel '%s'\n", kernel_filename
);
622 if (initrd_filename
) {
623 initrd_base
= INITRD_LOAD_ADDR
;
624 initrd_size
= load_image_targphys(initrd_filename
, initrd_base
,
625 ram_size
- initrd_base
);
626 if (initrd_size
< 0) {
627 hw_error("qemu: could not load initial ram disk '%s'\n",
634 ppc_boot_device
= 'm';
640 ppc_boot_device
= '\0';
641 /* For now, OHW cannot boot from the network. */
642 for (i
= 0; boot_device
[i
] != '\0'; i
++) {
643 if (boot_device
[i
] >= 'a' && boot_device
[i
] <= 'f') {
644 ppc_boot_device
= boot_device
[i
];
648 if (ppc_boot_device
== '\0') {
649 fprintf(stderr
, "No valid boot device for Mac99 machine\n");
654 isa_mem_base
= 0xc0000000;
655 if (PPC_INPUT(env
) != PPC_FLAGS_INPUT_6xx
) {
656 hw_error("Only 6xx bus is supported on PREP machine\n");
658 i8259
= i8259_init(first_cpu
->irq_inputs
[PPC6xx_INPUT_INT
]);
659 pci_bus
= pci_prep_init(i8259
);
660 // pci_bus = i440fx_init();
661 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
662 PPC_io_memory
= cpu_register_io_memory(PPC_prep_io_read
,
663 PPC_prep_io_write
, sysctrl
);
664 cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory
);
666 /* init basic PC hardware */
667 pci_vga_init(pci_bus
, 0, 0);
668 // openpic = openpic_init(0x00000000, 0xF0000000, 1);
669 // pit = pit_init(0x40, i8259[0]);
670 rtc_init(0x70, i8259
[8], 2000);
672 serial_init(0x3f8, i8259
[4], 115200, serial_hds
[0]);
674 if (nb_nics1
> NE2000_NB_MAX
)
675 nb_nics1
= NE2000_NB_MAX
;
676 for(i
= 0; i
< nb_nics1
; i
++) {
677 if (nd_table
[i
].model
== NULL
) {
678 nd_table
[i
].model
= "ne2k_isa";
680 if (strcmp(nd_table
[i
].model
, "ne2k_isa") == 0) {
681 isa_ne2000_init(ne2000_io
[i
], i8259
[ne2000_irq
[i
]], &nd_table
[i
]);
683 pci_nic_init(&nd_table
[i
], "ne2k_pci", NULL
);
687 if (drive_get_max_bus(IF_IDE
) >= MAX_IDE_BUS
) {
688 fprintf(stderr
, "qemu: too many IDE bus\n");
692 for(i
= 0; i
< MAX_IDE_BUS
* MAX_IDE_DEVS
; i
++) {
693 dinfo
= drive_get(IF_IDE
, i
/ MAX_IDE_DEVS
, i
% MAX_IDE_DEVS
);
694 hd
[i
] = dinfo
? dinfo
->bdrv
: NULL
;
697 for(i
= 0; i
< MAX_IDE_BUS
; i
++) {
698 isa_ide_init(ide_iobase
[i
], ide_iobase2
[i
], i8259
[ide_irq
[i
]],
702 i8042_init(i8259
[1], i8259
[12], 0x60);
706 for(i
= 0; i
< MAX_FD
; i
++) {
707 dinfo
= drive_get(IF_FLOPPY
, 0, i
);
708 fd
[i
] = dinfo
? dinfo
->bdrv
: NULL
;
710 fdctrl_init(i8259
[6], 2, 0, 0x3f0, fd
);
712 /* Register speaker port */
713 register_ioport_read(0x61, 1, 1, speaker_ioport_read
, NULL
);
714 register_ioport_write(0x61, 1, 1, speaker_ioport_write
, NULL
);
715 /* Register fake IO ports for PREP */
716 sysctrl
->reset_irq
= first_cpu
->irq_inputs
[PPC6xx_INPUT_HRESET
];
717 register_ioport_read(0x398, 2, 1, &PREP_io_read
, sysctrl
);
718 register_ioport_write(0x398, 2, 1, &PREP_io_write
, sysctrl
);
719 /* System control ports */
720 register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb
, sysctrl
);
721 register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb
, sysctrl
);
722 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb
, sysctrl
);
723 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb
, sysctrl
);
724 /* PCI intack location */
725 PPC_io_memory
= cpu_register_io_memory(PPC_intack_read
,
726 PPC_intack_write
, NULL
);
727 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory
);
728 /* PowerPC control and status register group */
730 PPC_io_memory
= cpu_register_io_memory(PPC_XCSR_read
, PPC_XCSR_write
,
732 cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory
);
736 usb_ohci_init_pci(pci_bus
, 3, -1);
739 m48t59
= m48t59_init(i8259
[8], 0, 0x0074, NVRAM_SIZE
, 59);
742 sysctrl
->nvram
= m48t59
;
744 /* Initialise NVRAM */
745 nvram
.opaque
= m48t59
;
746 nvram
.read_fn
= &m48t59_read
;
747 nvram
.write_fn
= &m48t59_write
;
748 PPC_NVRAM_set_params(&nvram
, NVRAM_SIZE
, "PREP", ram_size
, ppc_boot_device
,
749 kernel_base
, kernel_size
,
751 initrd_base
, initrd_size
,
752 /* XXX: need an option to load a NVRAM image */
754 graphic_width
, graphic_height
, graphic_depth
);
756 /* Special port to get debug messages from Open-Firmware */
757 register_ioport_write(0x0F00, 4, 1, &PPC_debug_write
, NULL
);
760 static QEMUMachine prep_machine
= {
762 .desc
= "PowerPC PREP platform",
763 .init
= ppc_prep_init
,
764 .max_cpus
= MAX_CPUS
,
767 static void prep_machine_init(void)
769 qemu_register_machine(&prep_machine
);
772 machine_init(prep_machine_init
);