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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 | /* * linux/arch/m68k/kernel/setup.c * * Copyright (C) 1995 Hamish Macdonald */ /* * This file handles the architecture-dependent parts of system setup */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/fs.h> #include <linux/console.h> #include <linux/genhd.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/init.h> #include <asm/bootinfo.h> #include <asm/setup.h> #include <asm/irq.h> #include <asm/io.h> #include <asm/machdep.h> #ifdef CONFIG_AMIGA #include <asm/amigahw.h> #endif #ifdef CONFIG_ATARI #include <asm/atarihw.h> #endif #ifdef CONFIG_BLK_DEV_INITRD #include <linux/blk.h> #include <asm/pgtable.h> #endif unsigned long m68k_machtype; unsigned long m68k_cputype; unsigned long m68k_fputype; unsigned long m68k_mmutype; int m68k_is040or060 = 0; extern int end; extern unsigned long availmem; int m68k_num_memory = 0; int m68k_realnum_memory = 0; struct mem_info m68k_memory[NUM_MEMINFO]; static struct mem_info m68k_ramdisk = { 0, 0 }; static char m68k_command_line[CL_SIZE]; char saved_command_line[CL_SIZE]; char m68k_debug_device[6] = ""; void (*mach_sched_init) (void (*handler)(int, void *, struct pt_regs *)) __initdata; /* machine dependent keyboard functions */ int (*mach_keyb_init) (void) __initdata; int (*mach_kbdrate) (struct kbd_repeat *) = NULL; void (*mach_kbd_leds) (unsigned int) = NULL; /* machine dependent irq functions */ void (*mach_init_IRQ) (void) __initdata; void (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL; void (*mach_get_model) (char *model) = NULL; int (*mach_get_hardware_list) (char *buffer) = NULL; int (*mach_get_irq_list) (char *) = NULL; void (*mach_process_int) (int, struct pt_regs *) = NULL; /* machine dependent timer functions */ unsigned long (*mach_gettimeoffset) (void); void (*mach_gettod) (int*, int*, int*, int*, int*, int*); int (*mach_hwclk) (int, struct hwclk_time*) = NULL; int (*mach_set_clock_mmss) (unsigned long) = NULL; void (*mach_reset)( void ); long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */ #if defined(CONFIG_AMIGA_FLOPPY) || defined(CONFIG_ATARI_FLOPPY) || defined(CONFIG_BLK_DEV_FD) void (*mach_floppy_setup) (char *, int *) __initdata = NULL; void (*mach_floppy_eject) (void) = NULL; #endif struct serial_struct; #ifdef CONFIG_SERIAL long serial_rs_init(void); int serial_register_serial(struct serial_struct *); void serial_unregister_serial(int); long ser_console_init(long, long ); #endif #if defined(CONFIG_USERIAL)||defined(CONFIG_BVME6000_SCC)||defined(CONFIG_MVME162_SCC)||defined(CONFIG_HPDCA)||defined(CONFIG_WHIPPET_SERIAL)||defined(CONFIG_MULTIFACE_III_TTY)||defined(CONFIG_GVPIOEXT)||defined(CONFIG_AMIGA_BUILTIN_SERIAL)||defined(CONFIG_MAC_SCC)||defined(CONFIG_ATARI_MIDI)||defined(CONFIG_ATARI_SCC)||defined(CONFIG_ATARI_MFPSER) #define M68K_SERIAL #endif #ifdef M68K_SERIAL long m68k_rs_init(void); int m68k_register_serial(struct serial_struct *); void m68k_unregister_serial(int); long m68k_serial_console_init(long, long ); #endif #ifdef CONFIG_HEARTBEAT void (*mach_heartbeat) (int) = NULL; #endif extern void base_trap_init(void); #ifdef CONFIG_MAGIC_SYSRQ int mach_sysrq_key = -1; int mach_sysrq_shift_state = 0; int mach_sysrq_shift_mask = 0; char *mach_sysrq_xlate = NULL; #endif extern int amiga_parse_bootinfo(const struct bi_record *); extern int atari_parse_bootinfo(const struct bi_record *); extern int mac_parse_bootinfo(const struct bi_record *); extern int q40_parse_bootinfo(const struct bi_record *); extern void config_amiga(void); extern void config_atari(void); extern void config_mac(void); extern void config_sun3(void); extern void config_apollo(void); extern void config_mvme147(void); extern void config_mvme16x(void); extern void config_bvme6000(void); extern void config_hp300(void); extern void config_q40(void); extern void config_sun3x(void); #define MASK_256K 0xfffc0000 __initfunc(static void m68k_parse_bootinfo(const struct bi_record *record)) { while (record->tag != BI_LAST) { int unknown = 0; const u_long *data = record->data; switch (record->tag) { case BI_MACHTYPE: case BI_CPUTYPE: case BI_FPUTYPE: case BI_MMUTYPE: /* Already set up by head.S */ break; case BI_MEMCHUNK: if (m68k_num_memory < NUM_MEMINFO) { m68k_memory[m68k_num_memory].addr = data[0]; m68k_memory[m68k_num_memory].size = data[1]; m68k_num_memory++; } else printk("m68k_parse_bootinfo: too many memory chunks\n"); break; case BI_RAMDISK: m68k_ramdisk.addr = data[0]; m68k_ramdisk.size = data[1]; break; case BI_COMMAND_LINE: strncpy(m68k_command_line, (const char *)data, CL_SIZE); m68k_command_line[CL_SIZE-1] = '\0'; break; default: if (MACH_IS_AMIGA) unknown = amiga_parse_bootinfo(record); else if (MACH_IS_ATARI) unknown = atari_parse_bootinfo(record); else if (MACH_IS_MAC) unknown = mac_parse_bootinfo(record); else if (MACH_IS_Q40) unknown = q40_parse_bootinfo(record); else unknown = 1; } if (unknown) printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n", record->tag); record = (struct bi_record *)((u_long)record+record->size); } m68k_realnum_memory = m68k_num_memory; #ifdef CONFIG_SINGLE_MEMORY_CHUNK if (m68k_num_memory > 1) { printk("Ignoring last %i chunks of physical memory\n", (m68k_num_memory - 1)); m68k_num_memory = 1; } #endif } __initfunc(void setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p)) { extern int _etext, _edata, _end; int i; char *p, *q; /* The bootinfo is located right after the kernel bss */ m68k_parse_bootinfo((const struct bi_record *)&_end); if (CPU_IS_040) m68k_is040or060 = 4; else if (CPU_IS_060) m68k_is040or060 = 6; base_trap_init(); /* clear the fpu if we have one */ if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) { volatile int zero = 0; asm __volatile__ ("frestore %0" : : "m" (zero)); } init_task.mm->start_code = PAGE_OFFSET; init_task.mm->end_code = (unsigned long) &_etext; init_task.mm->end_data = (unsigned long) &_edata; init_task.mm->brk = (unsigned long) &_end; *cmdline_p = m68k_command_line; memcpy(saved_command_line, *cmdline_p, CL_SIZE); /* Parse the command line for arch-specific options. * For the m68k, this is currently only "debug=xxx" to enable printing * certain kernel messages to some machine-specific device. */ for( p = *cmdline_p; p && *p; ) { i = 0; if (!strncmp( p, "debug=", 6 )) { strncpy( m68k_debug_device, p+6, sizeof(m68k_debug_device)-1 ); m68k_debug_device[sizeof(m68k_debug_device)-1] = 0; if ((q = strchr( m68k_debug_device, ' ' ))) *q = 0; i = 1; } #ifdef CONFIG_ATARI /* This option must be parsed very early */ if (!strncmp( p, "switches=", 9 )) { extern void atari_switches_setup( const char *, int ); atari_switches_setup( p+9, (q = strchr( p+9, ' ' )) ? (q - (p+9)) : strlen(p+9) ); i = 1; } #endif if (i) { /* option processed, delete it */ if ((q = strchr( p, ' ' ))) strcpy( p, q+1 ); else *p = 0; } else { if ((p = strchr( p, ' ' ))) ++p; } } switch (m68k_machtype) { #ifdef CONFIG_AMIGA case MACH_AMIGA: config_amiga(); break; #endif #ifdef CONFIG_ATARI case MACH_ATARI: config_atari(); break; #endif #ifdef CONFIG_MAC case MACH_MAC: config_mac(); break; #endif #ifdef CONFIG_SUN3 case MACH_SUN3: config_sun3(); break; #endif #ifdef CONFIG_APOLLO case MACH_APOLLO: config_apollo(); break; #endif #ifdef CONFIG_MVME147 case MACH_MVME147: config_mvme147(); break; #endif #ifdef CONFIG_MVME16x case MACH_MVME16x: config_mvme16x(); break; #endif #ifdef CONFIG_BVME6000 case MACH_BVME6000: config_bvme6000(); break; #endif #ifdef CONFIG_HP300 case MACH_HP300: config_hp300(); break; #endif #ifdef CONFIG_Q40 case MACH_Q40: config_q40(); break; #endif #ifdef CONFIG_SUN3X case MACH_SUN3X: config_sun3x(); break; #endif default: panic ("No configuration setup"); } #ifdef CONFIG_BLK_DEV_INITRD if (m68k_ramdisk.size) { initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr); initrd_end = initrd_start + m68k_ramdisk.size; } #endif *memory_start_p = availmem; *memory_end_p = 0; for (i = 0; i < m68k_num_memory; i++) *memory_end_p += m68k_memory[i].size & MASK_256K; } int get_cpuinfo(char * buffer) { const char *cpu, *mmu, *fpu; u_long clockfreq, clockfactor; #define LOOP_CYCLES_68020 (8) #define LOOP_CYCLES_68030 (8) #define LOOP_CYCLES_68040 (3) #define LOOP_CYCLES_68060 (1) if (CPU_IS_020) { cpu = "68020"; clockfactor = LOOP_CYCLES_68020; } else if (CPU_IS_030) { cpu = "68030"; clockfactor = LOOP_CYCLES_68030; } else if (CPU_IS_040) { cpu = "68040"; clockfactor = LOOP_CYCLES_68040; } else if (CPU_IS_060) { cpu = "68060"; clockfactor = LOOP_CYCLES_68060; } else { cpu = "680x0"; clockfactor = 0; } if (m68k_fputype & FPU_68881) fpu = "68881"; else if (m68k_fputype & FPU_68882) fpu = "68882"; else if (m68k_fputype & FPU_68040) fpu = "68040"; else if (m68k_fputype & FPU_68060) fpu = "68060"; else if (m68k_fputype & FPU_SUNFPA) fpu = "Sun FPA"; else fpu = "none"; if (m68k_mmutype & MMU_68851) mmu = "68851"; else if (m68k_mmutype & MMU_68030) mmu = "68030"; else if (m68k_mmutype & MMU_68040) mmu = "68040"; else if (m68k_mmutype & MMU_68060) mmu = "68060"; else if (m68k_mmutype & MMU_SUN3) mmu = "Sun-3"; else if (m68k_mmutype & MMU_APOLLO) mmu = "Apollo"; else mmu = "unknown"; clockfreq = loops_per_sec*clockfactor; return(sprintf(buffer, "CPU:\t\t%s\n" "MMU:\t\t%s\n" "FPU:\t\t%s\n" "Clocking:\t%lu.%1luMHz\n" "BogoMips:\t%lu.%02lu\n" "Calibration:\t%lu loops\n", cpu, mmu, fpu, clockfreq/1000000,(clockfreq/100000)%10, loops_per_sec/500000,(loops_per_sec/5000)%100, loops_per_sec)); } int get_hardware_list(char *buffer) { int len = 0; char model[80]; u_long mem; int i; if (mach_get_model) mach_get_model(model); else strcpy(model, "Unknown m68k"); len += sprintf(buffer+len, "Model:\t\t%s\n", model); len += get_cpuinfo(buffer+len); for (mem = 0, i = 0; i < m68k_num_memory; i++) mem += m68k_memory[i].size; len += sprintf(buffer+len, "System Memory:\t%ldK\n", mem>>10); if (mach_get_hardware_list) len += mach_get_hardware_list(buffer+len); return(len); } #if defined(CONFIG_SERIAL) || defined(M68K_SERIAL) int rs_init(void) { #ifdef CONFIG_SERIAL if (MACH_IS_Q40) return serial_rs_init(); #endif #ifdef M68K_SERIAL return m68k_rs_init(); #endif } int register_serial(struct serial_struct *p) { #ifdef CONFIG_SERIAL if (MACH_IS_Q40) return serial_register_serial(p); #endif #ifdef M68K_SERIAL return m68k_register_serial(p); #endif } void unregister_serial(int i) { #ifdef CONFIG_SERIAL if (MACH_IS_Q40) serial_unregister_serial(i); #endif #ifdef M68K_SERIAL m68k_unregister_serial(i); #endif } #ifdef CONFIG_SERIAL_CONSOLE long serial_console_init(long kmem_start, long kmem_end) { #ifdef CONFIG_SERIAL if (MACH_IS_Q40) return ser_console_init(kmem_start, kmem_end); #endif #if defined(M68K_SERIAL) && defined(CONFIG_SERIAL_CONSOLE) return m68k_serial_console_init(kmem_start, kmem_end); #endif } #endif #endif #if defined(CONFIG_AMIGA_FLOPPY) || defined(CONFIG_ATARI_FLOPPY) || defined(CONFIG_BLK_DEV_FD) __initfunc(void floppy_setup(char *str, int *ints)) { if (mach_floppy_setup) mach_floppy_setup (str, ints); } void floppy_eject(void) { if (mach_floppy_eject) mach_floppy_eject(); } #endif /* for "kbd-reset" cmdline param */ __initfunc(void kbd_reset_setup(char *str, int *ints)) { } void arch_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec) { if (mach_gettod) mach_gettod(year, mon, day, hour, min, sec); else *year = *mon = *day = *hour = *min = *sec = 0; } void check_bugs(void) { #ifndef CONFIG_FPU_EMU if (m68k_fputype == 0) { printk( KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, " "WHICH IS REQUIRED BY LINUX/M68K ***\n" ); printk( KERN_EMERG "Upgrade your hardware or join the FPU " "emulation project\n" ); printk( KERN_EMERG "(see http://no-fpu.linux-m68k.org)\n" ); panic( "no FPU" ); } #endif } |