2 * QEMU PPC PREP hardware System Emulator
4 * Copyright (c) 2003-2004 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
27 //#define HARD_DEBUG_PPC_IO
28 //#define DEBUG_PPC_IO
33 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
37 #if defined (HARD_DEBUG_PPC_IO)
38 #define PPC_IO_DPRINTF(fmt, args...) \
41 fprintf(logfile, "%s: " fmt, __func__ , ##args); \
43 printf("%s : " fmt, __func__ , ##args); \
46 #elif defined (DEBUG_PPC_IO)
47 #define PPC_IO_DPRINTF(fmt, args...) \
50 fprintf(logfile, "%s: " fmt, __func__ , ##args); \
54 #define PPC_IO_DPRINTF(fmt, args...) do { } while (0)
57 #define BIOS_FILENAME "ppc_rom.bin"
59 #define KERNEL_LOAD_ADDR 0x00000000
60 #define KERNEL_STACK_ADDR 0x00400000
61 #define INITRD_LOAD_ADDR 0x00800000
63 int load_kernel(const char *filename, uint8_t *addr,
69 fd = open(filename, O_RDONLY);
73 /* load 16 bit code */
74 if (read(fd, real_addr, 512) != 512)
76 setup_sects = real_addr[0x1F1];
79 if (read(fd, real_addr + 512, setup_sects * 512) !=
83 /* load 32 bit code */
84 size = read(fd, addr, 16 * 1024 * 1024);
94 static const int ide_iobase[2] = { 0x1f0, 0x170 };
95 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
96 static const int ide_irq[2] = { 13, 13 };
98 #define NE2000_NB_MAX 6
100 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
101 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
103 /* IO ports emulation */
104 #define PPC_IO_BASE 0x80000000
106 static void PPC_io_writeb (target_phys_addr_t addr, uint32_t value)
108 /* Don't polute serial port output */
110 if ((addr < 0x800003F0 || addr > 0x80000400) &&
111 (addr < 0x80000074 || addr > 0x80000077) &&
112 (addr < 0x80000020 || addr > 0x80000021) &&
113 (addr < 0x800000a0 || addr > 0x800000a1) &&
114 (addr < 0x800001f0 || addr > 0x800001f7) &&
115 (addr < 0x80000170 || addr > 0x80000177))
118 PPC_IO_DPRINTF("0x%08x => 0x%02x\n", addr - PPC_IO_BASE, value);
120 cpu_outb(NULL, addr - PPC_IO_BASE, value);
123 static uint32_t PPC_io_readb (target_phys_addr_t addr)
125 uint32_t ret = cpu_inb(NULL, addr - PPC_IO_BASE);
128 if ((addr < 0x800003F0 || addr > 0x80000400) &&
129 (addr < 0x80000074 || addr > 0x80000077) &&
130 (addr < 0x80000020 || addr > 0x80000021) &&
131 (addr < 0x800000a0 || addr > 0x800000a1) &&
132 (addr < 0x800001f0 || addr > 0x800001f7) &&
133 (addr < 0x80000170 || addr > 0x80000177) &&
134 (addr < 0x8000060 || addr > 0x8000064))
137 PPC_IO_DPRINTF("0x%08x <= 0x%02x\n", addr - PPC_IO_BASE, ret);
142 static void PPC_io_writew (target_phys_addr_t addr, uint32_t value)
144 if ((addr < 0x800001f0 || addr > 0x800001f7) &&
145 (addr < 0x80000170 || addr > 0x80000177)) {
146 PPC_IO_DPRINTF("0x%08x => 0x%04x\n", addr - PPC_IO_BASE, value);
148 #ifdef TARGET_WORDS_BIGENDIAN
149 value = bswap16(value);
151 cpu_outw(NULL, addr - PPC_IO_BASE, value);
154 static uint32_t PPC_io_readw (target_phys_addr_t addr)
156 uint32_t ret = cpu_inw(NULL, addr - PPC_IO_BASE);
157 #ifdef TARGET_WORDS_BIGENDIAN
160 if ((addr < 0x800001f0 || addr > 0x800001f7) &&
161 (addr < 0x80000170 || addr > 0x80000177)) {
162 PPC_IO_DPRINTF("0x%08x <= 0x%04x\n", addr - PPC_IO_BASE, ret);
167 static void PPC_io_writel (target_phys_addr_t addr, uint32_t value)
169 PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, value);
170 #ifdef TARGET_WORDS_BIGENDIAN
171 value = bswap32(value);
173 cpu_outl(NULL, addr - PPC_IO_BASE, value);
176 static uint32_t PPC_io_readl (target_phys_addr_t addr)
178 uint32_t ret = cpu_inl(NULL, addr - PPC_IO_BASE);
180 #ifdef TARGET_WORDS_BIGENDIAN
183 PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, ret);
187 static CPUWriteMemoryFunc *PPC_io_write[] = {
193 static CPUReadMemoryFunc *PPC_io_read[] = {
199 /* Read-only register (?) */
200 static void _PPC_ioB_write (target_phys_addr_t addr, uint32_t value)
202 // printf("%s: 0x%08x => 0x%08x\n", __func__, addr, value);
205 static uint32_t _PPC_ioB_read (target_phys_addr_t addr)
209 if (addr == 0xBFFFFFF0)
210 retval = pic_intack_read(NULL);
211 // printf("%s: 0x%08x <= %d\n", __func__, addr, retval);
216 static CPUWriteMemoryFunc *PPC_ioB_write[] = {
222 static CPUReadMemoryFunc *PPC_ioB_read[] = {
229 static CPUWriteMemoryFunc *PPC_io3_write[] = {
235 static CPUReadMemoryFunc *PPC_io3_read[] = {
242 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
243 static uint8_t PREP_fake_io[2];
244 static uint8_t NVRAM_lock;
246 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
248 PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
249 PREP_fake_io[addr - 0x0398] = val;
252 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
254 PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, PREP_fake_io[addr - 0x0398]);
255 return PREP_fake_io[addr - 0x0398];
258 static uint8_t syscontrol;
260 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
262 PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
265 /* Special port 92 */
266 /* Check soft reset asked */
268 printf("Soft reset asked... Stop emulation\n");
273 printf("Little Endian mode isn't supported (yet ?)\n");
278 /* Hardfile light register: don't care */
281 /* Password protect 1 register */
285 /* Password protect 2 register */
289 /* L2 invalidate register: don't care */
292 /* system control register */
296 /* I/O map type register */
298 printf("No support for non-continuous I/O map mode\n");
307 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
309 uint32_t retval = 0xFF;
313 /* Special port 92 */
317 /* Equipment present register:
319 * no upgrade processor
320 * no cards in PCI slots
330 /* system control register
331 * 7 - 6 / 1 - 0: L2 cache enable
337 retval = 0x03; /* no L2 cache */
340 /* I/O map type register */
346 PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, retval);
351 #define NVRAM_SIZE 0x2000
352 #define NVRAM_END 0x1FF0
353 #define NVRAM_OSAREA_SIZE 512
354 #define NVRAM_CONFSIZE 1024
356 static inline void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value)
358 m48t59_set_addr(nvram, addr);
359 m48t59_write(nvram, value);
362 static inline uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr)
364 m48t59_set_addr(nvram, addr);
365 return m48t59_read(nvram);
368 static inline void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
370 m48t59_set_addr(nvram, addr);
371 m48t59_write(nvram, value >> 8);
372 m48t59_set_addr(nvram, addr + 1);
373 m48t59_write(nvram, value & 0xFF);
376 static inline uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr)
380 m48t59_set_addr(nvram, addr);
381 tmp = m48t59_read(nvram) << 8;
382 m48t59_set_addr(nvram, addr + 1);
383 tmp |= m48t59_read(nvram);
388 static inline void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr,
391 m48t59_set_addr(nvram, addr);
392 m48t59_write(nvram, value >> 24);
393 m48t59_set_addr(nvram, addr + 1);
394 m48t59_write(nvram, (value >> 16) & 0xFF);
395 m48t59_set_addr(nvram, addr + 2);
396 m48t59_write(nvram, (value >> 8) & 0xFF);
397 m48t59_set_addr(nvram, addr + 3);
398 m48t59_write(nvram, value & 0xFF);
401 static inline uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
405 m48t59_set_addr(nvram, addr);
406 tmp = m48t59_read(nvram) << 24;
407 m48t59_set_addr(nvram, addr + 1);
408 tmp |= m48t59_read(nvram) << 16;
409 m48t59_set_addr(nvram, addr + 2);
410 tmp |= m48t59_read(nvram) << 8;
411 m48t59_set_addr(nvram, addr + 3);
412 tmp |= m48t59_read(nvram);
417 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
420 uint16_t pd, pd1, pd2;
425 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
426 tmp ^= (pd1 << 3) | (pd1 << 8);
427 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
432 static void NVRAM_set_crc (m48t59_t *nvram, uint32_t addr,
433 uint32_t start, uint32_t count)
436 uint16_t crc = 0xFFFF;
442 for (i = 0; i != count; i++) {
443 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
446 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
448 NVRAM_set_word(nvram, addr, crc);
451 static void prep_NVRAM_init (void)
455 nvram = m48t59_init(8, 0x0074, NVRAM_SIZE);
457 /* 0x00: NVRAM size in kB */
458 NVRAM_set_word(nvram, 0x00, NVRAM_SIZE >> 10);
459 /* 0x02: NVRAM version */
460 NVRAM_set_byte(nvram, 0x02, 0x01);
461 /* 0x03: NVRAM revision */
462 NVRAM_set_byte(nvram, 0x03, 0x01);
464 NVRAM_set_byte(nvram, 0x08, 0x00); /* Unknown */
466 NVRAM_set_byte(nvram, 0x09, 'B'); /* Big-endian */
467 /* 0x0A: OSArea usage */
468 NVRAM_set_byte(nvram, 0x0A, 0x00); /* Empty */
470 NVRAM_set_byte(nvram, 0x0B, 0x00); /* Normal */
471 /* Restart block description record */
472 /* 0x0C: restart block version */
473 NVRAM_set_word(nvram, 0x0C, 0x01);
474 /* 0x0E: restart block revision */
475 NVRAM_set_word(nvram, 0x0E, 0x01);
476 /* 0x20: restart address */
477 NVRAM_set_lword(nvram, 0x20, 0x00);
478 /* 0x24: save area address */
479 NVRAM_set_lword(nvram, 0x24, 0x00);
480 /* 0x28: save area length */
481 NVRAM_set_lword(nvram, 0x28, 0x00);
482 /* 0x1C: checksum of restart block */
483 NVRAM_set_crc(nvram, 0x1C, 0x0C, 32);
485 /* Security section */
486 /* Set all to zero */
487 /* 0xC4: pointer to global environment area */
488 NVRAM_set_lword(nvram, 0xC4, 0x0100);
489 /* 0xC8: size of global environment area */
490 NVRAM_set_lword(nvram, 0xC8,
491 NVRAM_END - NVRAM_OSAREA_SIZE - NVRAM_CONFSIZE - 0x0100);
492 /* 0xD4: pointer to configuration area */
493 NVRAM_set_lword(nvram, 0xD4, NVRAM_END - NVRAM_CONFSIZE);
494 /* 0xD8: size of configuration area */
495 NVRAM_set_lword(nvram, 0xD8, NVRAM_CONFSIZE);
496 /* 0xE8: pointer to OS specific area */
497 NVRAM_set_lword(nvram, 0xE8,
498 NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE);
499 /* 0xD8: size of OS specific area */
500 NVRAM_set_lword(nvram, 0xEC, NVRAM_OSAREA_SIZE);
502 /* Configuration area */
504 // NVRAM_set_lword(nvram, 0x1FFC, 0x50);
506 /* 0x04: checksum 0 => OS area */
507 NVRAM_set_crc(nvram, 0x04, 0x00,
508 NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE);
509 /* 0x06: checksum of config area */
510 NVRAM_set_crc(nvram, 0x06, NVRAM_END - NVRAM_CONFSIZE, NVRAM_CONFSIZE);
513 int load_initrd (const char *filename, uint8_t *addr)
517 printf("Load initrd\n");
518 fd = open(filename, O_RDONLY);
521 size = read(fd, addr, 16 * 1024 * 1024);
525 printf("Load initrd: %d\n", size);
529 printf("Load initrd failed\n");
533 /* Quick hack for PPC memory infos... */
534 static void put_long (void *addr, uint32_t l)
537 pos[0] = (l >> 24) & 0xFF;
538 pos[1] = (l >> 16) & 0xFF;
539 pos[2] = (l >> 8) & 0xFF;
543 /* bootloader infos are in the form:
545 * uint32_t TAG_size (from TAG to next TAG).
549 #if !defined (USE_OPEN_FIRMWARE)
550 static void *set_bootinfo_tag (void *addr, uint32_t tag, uint32_t size,
557 put_long(pos, size + 8);
559 memcpy(pos, data, size);
566 typedef struct boot_dev_t {
567 const unsigned char *name;
572 static boot_dev_t boot_devs[] =
574 { "/dev/fd0", 2, 0, },
575 { "/dev/fd1", 2, 1, },
576 { "/dev/hda", 3, 1, },
577 // { "/dev/ide/host0/bus0/target0/lun0/part1", 3, 1, },
578 // { "/dev/hdc", 22, 0, },
579 { "/dev/hdc", 22, 1, },
580 { "/dev/ram0 init=/linuxrc", 1, 0, },
584 * BEPI : bloc virtual address
585 * BL : area size bits (128 kB is 0, 256 1, 512 3, ...
588 * BPRN : bloc real address align on 4MB boundary
589 * WIMG : cache access mode : not used
590 * PP : protection bits
592 static void setup_BAT (CPUPPCState *env, int BAT,
593 uint32_t virtual, uint32_t physical,
594 uint32_t size, int Vs, int Vp, int PP)
596 uint32_t sz_bits, tmp_sz, align, tmp;
600 for (tmp_sz = size / 131072; tmp_sz != 1; tmp_sz = tmp_sz >> 1) {
601 sz_bits = (sz_bits << 1) + 1;
604 tmp = virtual & ~(align - 1); /* Align virtual area start */
605 tmp |= sz_bits << 2; /* Fix BAT size */
606 tmp |= Vs << 1; /* Supervisor access */
607 tmp |= Vp; /* User access */
608 env->DBAT[0][BAT] = tmp;
609 env->IBAT[0][BAT] = tmp;
610 tmp = physical & ~(align - 1); /* Align physical area start */
611 tmp |= 0; /* Don't care about WIMG */
612 tmp |= PP; /* Protection */
613 env->DBAT[1][BAT] = tmp;
614 env->IBAT[1][BAT] = tmp;
615 printf("Set BATU0 to 0x%08x BATL0 to 0x%08x\n",
616 env->DBAT[0][BAT], env->DBAT[1][BAT]);
619 static void VGA_printf (uint8_t *s)
622 unsigned int format_width, i;
624 uint16_t arg, digit, nibble;
627 arg_ptr = (uint16_t *)((void *)&s);
630 while ((c = *s) != '\0') {
634 } else if (in_format) {
635 if ((c >= '0') && (c <= '9')) {
636 format_width = (format_width * 10) + (c - '0');
637 } else if (c == 'x') {
638 arg_ptr++; // increment to next arg
640 if (format_width == 0)
642 digit = format_width - 1;
643 for (i = 0; i < format_width; i++) {
644 nibble = (arg >> (4 * digit)) & 0x000f;
646 PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + '0');
648 PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + 'A');
653 //else if (c == 'd') {
657 PPC_io_writeb(PPC_IO_BASE + 0x500, c);
663 static void VGA_init (void)
665 /* Basic VGA init, inspired by plex86 VGAbios */
666 printf("Init VGA...\n");
668 /* switch to color mode and enable CPU access 480 lines */
669 PPC_io_writeb(PPC_IO_BASE + 0x3C2, 0xC3);
670 /* more than 64k 3C4/04 */
671 PPC_io_writeb(PPC_IO_BASE + 0x3C4, 0x04);
672 PPC_io_writeb(PPC_IO_BASE + 0x3C5, 0x02);
674 VGA_printf("PPC VGA BIOS...\n");
677 extern CPUPPCState *global_env;
679 static uint32_t get_le32 (void *addr)
681 return le32_to_cpu(*((uint32_t *)addr));
684 void PPC_init_hw (/*CPUPPCState *env,*/ uint32_t mem_size,
685 uint32_t kernel_addr, uint32_t kernel_size,
686 uint32_t stack_addr, int boot_device,
687 const unsigned char *initrd_file)
689 CPUPPCState *env = global_env;
691 #if !defined (USE_OPEN_FIRMWARE)
696 printf("RAM size: %u 0x%08x (%u)\n", mem_size, mem_size, mem_size >> 20);
697 #if defined (USE_OPEN_FIRMWARE)
698 setup_memory(env, mem_size);
701 /* Fake bootloader */
704 uint32_t offset = get_le32(phys_ram_base + kernel_addr);
706 uint32_t offset = 12;
708 env->nip = kernel_addr + offset;
709 printf("Start address: 0x%08x\n", env->nip);
711 /* Set up msr according to PREP specification */
714 msr_pr = 0; /* Start in supervisor mode */
716 msr_fe0 = msr_fe1 = 0;
720 msr_le = msr_ile = 0;
721 env->gpr[1] = stack_addr; /* Let's have a stack */
723 env->gpr[8] = kernel_addr;
724 /* There is a bug in 2.4 kernels:
725 * if a decrementer exception is pending when it enables msr_ee,
726 * it's not ready to handle it...
728 env->decr = 0xFFFFFFFF;
729 p = phys_ram_base + kernel_addr;
730 #if !defined (USE_OPEN_FIRMWARE)
731 /* Let's register the whole memory available only in supervisor mode */
732 setup_BAT(env, 0, 0x00000000, 0x00000000, mem_size, 1, 0, 2);
733 /* Avoid open firmware init call (to get a console)
734 * This will make the kernel think we are a PREP machine...
736 put_long(p, 0xdeadc0de);
737 /* Build a real stack room */
738 p = phys_ram_base + stack_addr;
739 put_long(p, stack_addr);
742 /* Pretend there are no residual data */
744 if (initrd_file != NULL) {
746 env->gpr[4] = (kernel_addr + kernel_size + 4095) & ~4095;
747 size = load_initrd(initrd_file,
748 phys_ram_base + env->gpr[4]);
751 env->gpr[4] = env->gpr[5] = 0;
756 printf("Initrd loaded at 0x%08x (%d) (0x%08x 0x%08x)\n",
757 env->gpr[4], env->gpr[5], kernel_addr, kernel_size);
759 env->gpr[4] = env->gpr[5] = 0;
761 /* We have to put bootinfos after the BSS
762 * The BSS starts after the kernel end.
765 p = phys_ram_base + kernel_addr +
766 kernel_size + (1 << 20) - 1) & ~((1 << 20) - 1);
768 p = phys_ram_base + kernel_addr + 0x400000;
771 fprintf(logfile, "bootinfos: %p 0x%08x\n",
772 p, (int)(p - phys_ram_base));
774 printf("bootinfos: %p 0x%08x\n",
775 p, (int)(p - phys_ram_base));
777 /* Command line: let's put it after bootinfos */
779 sprintf(p + 0x1000, "console=ttyS0,9600 root=%02x%02x mem=%dM",
780 boot_devs[boot_device - 'a'].major,
781 boot_devs[boot_device - 'a'].minor,
784 sprintf(p + 0x1000, "console=ttyS0,9600 console=tty0 root=%s mem=%dM",
785 boot_devs[boot_device - 'a'].name,
788 env->gpr[6] = p + 0x1000 - phys_ram_base;
789 env->gpr[7] = env->gpr[6] + strlen(p + 0x1000);
791 fprintf(logfile, "cmdline: %p 0x%08x [%s]\n",
792 p + 0x1000, env->gpr[6], p + 0x1000);
794 printf("cmdline: %p 0x%08x [%s]\n",
795 p + 0x1000, env->gpr[6], p + 0x1000);
798 p = set_bootinfo_tag(p, 0x1010, 0, 0);
800 p = set_bootinfo_tag(p, 0x1012, env->gpr[7] - env->gpr[6],
801 env->gpr[6] + phys_ram_base);
804 tmp[0] = (mem_size >> 24) & 0xFF;
805 tmp[1] = (mem_size >> 16) & 0xFF;
806 tmp[2] = (mem_size >> 8) & 0xFF;
807 tmp[3] = mem_size & 0xFF;
808 p = set_bootinfo_tag(p, 0x1017, 4, tmpi);
810 tmp[0] = (env->gpr[4] >> 24) & 0xFF;
811 tmp[1] = (env->gpr[4] >> 16) & 0xFF;
812 tmp[2] = (env->gpr[4] >> 8) & 0xFF;
813 tmp[3] = env->gpr[4] & 0xFF;
814 tmp[4] = (env->gpr[5] >> 24) & 0xFF;
815 tmp[5] = (env->gpr[5] >> 16) & 0xFF;
816 tmp[6] = (env->gpr[5] >> 8) & 0xFF;
817 tmp[7] = env->gpr[5] & 0xFF;
818 p = set_bootinfo_tag(p, 0x1014, 8, tmpi);
819 env->gpr[4] = env->gpr[5] = 0;
821 p = set_bootinfo_tag(p, 0x1011, 0, 0);
824 * kernel is loaded at kernel_addr and wants to be seen at 0x01000000
826 setup_BAT(env, 0, 0x01000000, kernel_addr, 0x00400000, 1, 0, 2);
829 uint32_t offset = get_le32(phys_ram_base + kernel_addr);
831 uint32_t offset = 12;
833 env->nip = 0x01000000 | (kernel_addr + offset);
834 printf("Start address: 0x%08x\n", env->nip);
836 env->gpr[1] = env->nip + (1 << 22);
837 p = phys_ram_base + stack_addr;
838 put_long(p - 32, stack_addr);
840 printf("Kernel starts at 0x%08x stack 0x%08x\n", env->nip, env->gpr[1]);
841 /* We want all lower address not to be translated */
842 setup_BAT(env, 1, 0x00000000, 0x00000000, 0x010000000, 1, 1, 2);
843 /* We also need a BAT to access OF */
844 setup_BAT(env, 2, 0xFFFE0000, mem_size - 131072, 131072, 1, 0, 1);
845 /* Setup OF entry point */
848 p = (char *)phys_ram_base + mem_size - 131072;
849 /* Special opcode to call OF */
850 *p++ = 0x18; *p++ = 0x00; *p++ = 0x00; *p++ = 0x02;
852 *p++ = 0x4E; *p++ = 0x80; *p++ = 0x00; *p++ = 0x20;
854 env->gpr[5] = 0xFFFE0000;
855 /* Register translations */
857 OF_transl_t translations[3] = {
858 { 0x01000000, 0x00400000, kernel_addr, 0x00000002, },
859 { 0x00000000, 0x01000000, 0x00000000, 0x00000002, },
860 { 0xFFFE0000, 0x00020000, mem_size - (128 * 1024),
863 OF_register_translations(3, translations);
865 /* Quite artificial, for now */
866 OF_register_bus("isa", "isa");
867 OF_register_serial("isa", "serial", 4, 0x3f8);
868 OF_register_stdio("serial", "serial");
869 /* Set up RTAS service */
871 /* Command line: let's put it just over the stack */
874 p = phys_ram_base + kernel_addr +
875 kernel_size + (1 << 20) - 1) & ~((1 << 20) - 1);
877 p = phys_ram_base + kernel_addr + 0x400000;
880 sprintf(p, "console=ttyS0,9600 root=%02x%02x mem=%dM",
881 boot_devs[boot_device - 'a'].major,
882 boot_devs[boot_device - 'a'].minor,
885 sprintf(p, "console=ttyS0,9600 root=%s mem=%dM ne2000=0x300,9",
886 boot_devs[boot_device - 'a'].name,
889 OF_register_bootargs(p);
894 void PPC_end_init (void)
899 /* PowerPC PREP hardware initialisation */
900 void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
901 DisplayState *ds, const char **fd_filename, int snapshot,
902 const char *kernel_filename, const char *kernel_cmdline,
903 const char *initrd_filename)
907 int ret, linux_boot, initrd_size, i, nb_nics1, fd;
909 linux_boot = (kernel_filename != NULL);
912 cpu_register_physical_memory(0, ram_size, 0);
914 isa_mem_base = 0xc0000000;
917 /* now we can load the kernel */
918 ret = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
920 fprintf(stderr, "qemu: could not load kernel '%s'\n",
927 if (initrd_filename) {
928 initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
929 if (initrd_size < 0) {
930 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
936 PPC_init_hw(/*env,*/ ram_size, KERNEL_LOAD_ADDR, ret,
937 KERNEL_STACK_ADDR, boot_device, initrd_filename);
940 // snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
941 snprintf(buf, sizeof(buf), "%s", BIOS_FILENAME);
942 printf("load BIOS at %p\n", phys_ram_base + 0x000f0000);
943 ret = load_image(buf, phys_ram_base + 0x000f0000);
944 if (ret != 0x10000) {
945 fprintf(stderr, "qemu: could not load PPC bios '%s' (%d)\n%m\n",
951 /* init basic PC hardware */
952 vga_initialize(ds, phys_ram_base + ram_size, ram_size,
956 // pit_init(0x40, 0);
958 fd = serial_open_device();
959 serial_init(0x3f8, 4, fd);
962 if (nb_nics1 > NE2000_NB_MAX)
963 nb_nics1 = NE2000_NB_MAX;
964 for(i = 0; i < nb_nics1; i++) {
965 ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
969 for(i = 0; i < 2; i++) {
970 ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
971 bs_table[2 * i], bs_table[2 * i + 1]);
978 fdctrl_init(6, 2, 0, 0x3f0, fd_table);
980 /* Register 64 kB of IO space */
981 PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write);
982 cpu_register_physical_memory(0x80000000, 0x10000, PPC_io_memory);
983 /* Register fake IO ports for PREP */
984 register_ioport_read(0x398, 2, 1, &PREP_io_read, NULL);
985 register_ioport_write(0x398, 2, 1, &PREP_io_write, NULL);
986 /* System control ports */
987 register_ioport_write(0x0092, 0x1, 1, &PREP_io_800_writeb, NULL);
988 register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, NULL);
989 register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, NULL);
990 /* PCI intack location (0xfef00000 / 0xbffffff0) */
991 PPC_io_memory = cpu_register_io_memory(0, PPC_ioB_read, PPC_ioB_write);
992 cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
993 // cpu_register_physical_memory(0xFEF00000, 0x4, PPC_io_memory);