Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $ |
| 2 | * linux/arch/sparc64/kernel/setup.c |
| 3 | * |
| 4 | * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | */ |
| 7 | |
| 8 | #include <linux/errno.h> |
| 9 | #include <linux/sched.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/stddef.h> |
| 13 | #include <linux/unistd.h> |
| 14 | #include <linux/ptrace.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <asm/smp.h> |
| 17 | #include <linux/user.h> |
| 18 | #include <linux/a.out.h> |
| 19 | #include <linux/tty.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/config.h> |
| 22 | #include <linux/fs.h> |
| 23 | #include <linux/seq_file.h> |
| 24 | #include <linux/syscalls.h> |
| 25 | #include <linux/kdev_t.h> |
| 26 | #include <linux/major.h> |
| 27 | #include <linux/string.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/inet.h> |
| 30 | #include <linux/console.h> |
| 31 | #include <linux/root_dev.h> |
| 32 | #include <linux/interrupt.h> |
| 33 | #include <linux/cpu.h> |
| 34 | #include <linux/initrd.h> |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <asm/system.h> |
| 37 | #include <asm/io.h> |
| 38 | #include <asm/processor.h> |
| 39 | #include <asm/oplib.h> |
| 40 | #include <asm/page.h> |
| 41 | #include <asm/pgtable.h> |
| 42 | #include <asm/idprom.h> |
| 43 | #include <asm/head.h> |
| 44 | #include <asm/starfire.h> |
| 45 | #include <asm/mmu_context.h> |
| 46 | #include <asm/timer.h> |
| 47 | #include <asm/sections.h> |
| 48 | #include <asm/setup.h> |
| 49 | #include <asm/mmu.h> |
| 50 | |
| 51 | #ifdef CONFIG_IP_PNP |
| 52 | #include <net/ipconfig.h> |
| 53 | #endif |
| 54 | |
| 55 | struct screen_info screen_info = { |
| 56 | 0, 0, /* orig-x, orig-y */ |
| 57 | 0, /* unused */ |
| 58 | 0, /* orig-video-page */ |
| 59 | 0, /* orig-video-mode */ |
| 60 | 128, /* orig-video-cols */ |
| 61 | 0, 0, 0, /* unused, ega_bx, unused */ |
| 62 | 54, /* orig-video-lines */ |
| 63 | 0, /* orig-video-isVGA */ |
| 64 | 16 /* orig-video-points */ |
| 65 | }; |
| 66 | |
| 67 | /* Typing sync at the prom prompt calls the function pointed to by |
| 68 | * the sync callback which I set to the following function. |
| 69 | * This should sync all filesystems and return, for now it just |
| 70 | * prints out pretty messages and returns. |
| 71 | */ |
| 72 | |
| 73 | void (*prom_palette)(int); |
| 74 | void (*prom_keyboard)(void); |
| 75 | |
| 76 | static void |
| 77 | prom_console_write(struct console *con, const char *s, unsigned n) |
| 78 | { |
| 79 | prom_write(s, n); |
| 80 | } |
| 81 | |
| 82 | static struct console prom_console = { |
| 83 | .name = "prom", |
| 84 | .write = prom_console_write, |
| 85 | .flags = CON_CONSDEV | CON_ENABLED, |
| 86 | .index = -1, |
| 87 | }; |
| 88 | |
| 89 | #define PROM_TRUE -1 |
| 90 | #define PROM_FALSE 0 |
| 91 | |
| 92 | /* Pretty sick eh? */ |
| 93 | int prom_callback(long *args) |
| 94 | { |
| 95 | struct console *cons, *saved_console = NULL; |
| 96 | unsigned long flags; |
| 97 | char *cmd; |
| 98 | extern spinlock_t prom_entry_lock; |
| 99 | |
| 100 | if (!args) |
| 101 | return -1; |
| 102 | if (!(cmd = (char *)args[0])) |
| 103 | return -1; |
| 104 | |
| 105 | /* |
| 106 | * The callback can be invoked on the cpu that first dropped |
| 107 | * into prom_cmdline after taking the serial interrupt, or on |
| 108 | * a slave processor that was smp_captured() if the |
| 109 | * administrator has done a switch-cpu inside obp. In either |
| 110 | * case, the cpu is marked as in-interrupt. Drop IRQ locks. |
| 111 | */ |
| 112 | irq_exit(); |
| 113 | |
| 114 | /* XXX Revisit the locking here someday. This is a debugging |
| 115 | * XXX feature so it isnt all that critical. -DaveM |
| 116 | */ |
| 117 | local_irq_save(flags); |
| 118 | |
| 119 | spin_unlock(&prom_entry_lock); |
| 120 | cons = console_drivers; |
| 121 | while (cons) { |
| 122 | unregister_console(cons); |
| 123 | cons->flags &= ~(CON_PRINTBUFFER); |
| 124 | cons->next = saved_console; |
| 125 | saved_console = cons; |
| 126 | cons = console_drivers; |
| 127 | } |
| 128 | register_console(&prom_console); |
| 129 | if (!strcmp(cmd, "sync")) { |
| 130 | prom_printf("PROM `%s' command...\n", cmd); |
| 131 | show_free_areas(); |
| 132 | if (current->pid != 0) { |
| 133 | local_irq_enable(); |
| 134 | sys_sync(); |
| 135 | local_irq_disable(); |
| 136 | } |
| 137 | args[2] = 0; |
| 138 | args[args[1] + 3] = -1; |
| 139 | prom_printf("Returning to PROM\n"); |
| 140 | } else if (!strcmp(cmd, "va>tte-data")) { |
| 141 | unsigned long ctx, va; |
| 142 | unsigned long tte = 0; |
| 143 | long res = PROM_FALSE; |
| 144 | |
| 145 | ctx = args[3]; |
| 146 | va = args[4]; |
| 147 | if (ctx) { |
| 148 | /* |
| 149 | * Find process owning ctx, lookup mapping. |
| 150 | */ |
| 151 | struct task_struct *p; |
| 152 | struct mm_struct *mm = NULL; |
| 153 | pgd_t *pgdp; |
| 154 | pud_t *pudp; |
| 155 | pmd_t *pmdp; |
| 156 | pte_t *ptep; |
Hugh Dickins | b8ae486 | 2005-11-07 14:08:46 -0800 | [diff] [blame] | 157 | pte_t pte; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | for_each_process(p) { |
| 160 | mm = p->mm; |
| 161 | if (CTX_NRBITS(mm->context) == ctx) |
| 162 | break; |
| 163 | } |
| 164 | if (!mm || |
| 165 | CTX_NRBITS(mm->context) != ctx) |
| 166 | goto done; |
| 167 | |
| 168 | pgdp = pgd_offset(mm, va); |
| 169 | if (pgd_none(*pgdp)) |
| 170 | goto done; |
| 171 | pudp = pud_offset(pgdp, va); |
| 172 | if (pud_none(*pudp)) |
| 173 | goto done; |
| 174 | pmdp = pmd_offset(pudp, va); |
| 175 | if (pmd_none(*pmdp)) |
| 176 | goto done; |
| 177 | |
| 178 | /* Preemption implicitly disabled by virtue of |
| 179 | * being called from inside OBP. |
| 180 | */ |
| 181 | ptep = pte_offset_map(pmdp, va); |
Hugh Dickins | b8ae486 | 2005-11-07 14:08:46 -0800 | [diff] [blame] | 182 | pte = *ptep; |
| 183 | if (pte_present(pte)) { |
| 184 | tte = pte_val(pte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | res = PROM_TRUE; |
| 186 | } |
| 187 | pte_unmap(ptep); |
| 188 | goto done; |
| 189 | } |
| 190 | |
| 191 | if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) { |
David S. Miller | 0835ae0 | 2005-10-04 15:23:20 -0700 | [diff] [blame] | 192 | extern unsigned long sparc64_kern_pri_context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | /* Spitfire Errata #32 workaround */ |
| 195 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" |
| 196 | "flush %%g6" |
| 197 | : /* No outputs */ |
David S. Miller | 0835ae0 | 2005-10-04 15:23:20 -0700 | [diff] [blame] | 198 | : "r" (sparc64_kern_pri_context), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | "r" (PRIMARY_CONTEXT), |
| 200 | "i" (ASI_DMMU)); |
| 201 | |
| 202 | /* |
| 203 | * Locked down tlb entry. |
| 204 | */ |
| 205 | |
| 206 | if (tlb_type == spitfire) |
| 207 | tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT); |
| 208 | else if (tlb_type == cheetah || tlb_type == cheetah_plus) |
| 209 | tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT); |
| 210 | |
| 211 | res = PROM_TRUE; |
| 212 | goto done; |
| 213 | } |
| 214 | |
| 215 | if (va < PGDIR_SIZE) { |
| 216 | /* |
| 217 | * vmalloc or prom_inherited mapping. |
| 218 | */ |
| 219 | pgd_t *pgdp; |
| 220 | pud_t *pudp; |
| 221 | pmd_t *pmdp; |
| 222 | pte_t *ptep; |
Hugh Dickins | b8ae486 | 2005-11-07 14:08:46 -0800 | [diff] [blame] | 223 | pte_t pte; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | int error; |
| 225 | |
| 226 | if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) { |
| 227 | tte = prom_virt_to_phys(va, &error); |
| 228 | if (!error) |
| 229 | res = PROM_TRUE; |
| 230 | goto done; |
| 231 | } |
| 232 | pgdp = pgd_offset_k(va); |
| 233 | if (pgd_none(*pgdp)) |
| 234 | goto done; |
| 235 | pudp = pud_offset(pgdp, va); |
| 236 | if (pud_none(*pudp)) |
| 237 | goto done; |
| 238 | pmdp = pmd_offset(pudp, va); |
| 239 | if (pmd_none(*pmdp)) |
| 240 | goto done; |
| 241 | |
| 242 | /* Preemption implicitly disabled by virtue of |
| 243 | * being called from inside OBP. |
| 244 | */ |
| 245 | ptep = pte_offset_kernel(pmdp, va); |
Hugh Dickins | b8ae486 | 2005-11-07 14:08:46 -0800 | [diff] [blame] | 246 | pte = *ptep; |
| 247 | if (pte_present(pte)) { |
| 248 | tte = pte_val(pte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | res = PROM_TRUE; |
| 250 | } |
| 251 | goto done; |
| 252 | } |
| 253 | |
| 254 | if (va < PAGE_OFFSET) { |
| 255 | /* |
| 256 | * No mappings here. |
| 257 | */ |
| 258 | goto done; |
| 259 | } |
| 260 | |
| 261 | if (va & (1UL << 40)) { |
| 262 | /* |
| 263 | * I/O page. |
| 264 | */ |
| 265 | |
| 266 | tte = (__pa(va) & _PAGE_PADDR) | |
| 267 | _PAGE_VALID | _PAGE_SZ4MB | |
| 268 | _PAGE_E | _PAGE_P | _PAGE_W; |
| 269 | res = PROM_TRUE; |
| 270 | goto done; |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * Normal page. |
| 275 | */ |
| 276 | tte = (__pa(va) & _PAGE_PADDR) | |
| 277 | _PAGE_VALID | _PAGE_SZ4MB | |
| 278 | _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W; |
| 279 | res = PROM_TRUE; |
| 280 | |
| 281 | done: |
| 282 | if (res == PROM_TRUE) { |
| 283 | args[2] = 3; |
| 284 | args[args[1] + 3] = 0; |
| 285 | args[args[1] + 4] = res; |
| 286 | args[args[1] + 5] = tte; |
| 287 | } else { |
| 288 | args[2] = 2; |
| 289 | args[args[1] + 3] = 0; |
| 290 | args[args[1] + 4] = res; |
| 291 | } |
| 292 | } else if (!strcmp(cmd, ".soft1")) { |
| 293 | unsigned long tte; |
| 294 | |
| 295 | tte = args[3]; |
| 296 | prom_printf("%lx:\"%s%s%s%s%s\" ", |
| 297 | (tte & _PAGE_SOFT) >> 7, |
| 298 | tte & _PAGE_MODIFIED ? "M" : "-", |
| 299 | tte & _PAGE_ACCESSED ? "A" : "-", |
| 300 | tte & _PAGE_READ ? "W" : "-", |
| 301 | tte & _PAGE_WRITE ? "R" : "-", |
| 302 | tte & _PAGE_PRESENT ? "P" : "-"); |
| 303 | |
| 304 | args[2] = 2; |
| 305 | args[args[1] + 3] = 0; |
| 306 | args[args[1] + 4] = PROM_TRUE; |
| 307 | } else if (!strcmp(cmd, ".soft2")) { |
| 308 | unsigned long tte; |
| 309 | |
| 310 | tte = args[3]; |
| 311 | prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50); |
| 312 | |
| 313 | args[2] = 2; |
| 314 | args[args[1] + 3] = 0; |
| 315 | args[args[1] + 4] = PROM_TRUE; |
| 316 | } else { |
| 317 | prom_printf("unknown PROM `%s' command...\n", cmd); |
| 318 | } |
| 319 | unregister_console(&prom_console); |
| 320 | while (saved_console) { |
| 321 | cons = saved_console; |
| 322 | saved_console = cons->next; |
| 323 | register_console(cons); |
| 324 | } |
| 325 | spin_lock(&prom_entry_lock); |
| 326 | local_irq_restore(flags); |
| 327 | |
| 328 | /* |
| 329 | * Restore in-interrupt status for a resume from obp. |
| 330 | */ |
| 331 | irq_enter(); |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | unsigned int boot_flags = 0; |
| 336 | #define BOOTME_DEBUG 0x1 |
| 337 | #define BOOTME_SINGLE 0x2 |
| 338 | |
| 339 | /* Exported for mm/init.c:paging_init. */ |
| 340 | unsigned long cmdline_memory_size = 0; |
| 341 | |
| 342 | static struct console prom_debug_console = { |
| 343 | .name = "debug", |
| 344 | .write = prom_console_write, |
| 345 | .flags = CON_PRINTBUFFER, |
| 346 | .index = -1, |
| 347 | }; |
| 348 | |
| 349 | /* XXX Implement this at some point... */ |
| 350 | void kernel_enter_debugger(void) |
| 351 | { |
| 352 | } |
| 353 | |
| 354 | int obp_system_intr(void) |
| 355 | { |
| 356 | if (boot_flags & BOOTME_DEBUG) { |
| 357 | printk("OBP: system interrupted\n"); |
| 358 | prom_halt(); |
| 359 | return 1; |
| 360 | } |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * Process kernel command line switches that are specific to the |
| 366 | * SPARC or that require special low-level processing. |
| 367 | */ |
| 368 | static void __init process_switch(char c) |
| 369 | { |
| 370 | switch (c) { |
| 371 | case 'd': |
| 372 | boot_flags |= BOOTME_DEBUG; |
| 373 | break; |
| 374 | case 's': |
| 375 | boot_flags |= BOOTME_SINGLE; |
| 376 | break; |
| 377 | case 'h': |
| 378 | prom_printf("boot_flags_init: Halt!\n"); |
| 379 | prom_halt(); |
| 380 | break; |
| 381 | case 'p': |
| 382 | /* Use PROM debug console. */ |
| 383 | register_console(&prom_debug_console); |
| 384 | break; |
David S. Miller | 816242d | 2005-05-23 15:52:08 -0700 | [diff] [blame] | 385 | case 'P': |
| 386 | /* Force UltraSPARC-III P-Cache on. */ |
| 387 | if (tlb_type != cheetah) { |
| 388 | printk("BOOT: Ignoring P-Cache force option.\n"); |
| 389 | break; |
| 390 | } |
| 391 | cheetah_pcache_forced_on = 1; |
| 392 | add_taint(TAINT_MACHINE_CHECK); |
| 393 | cheetah_enable_pcache(); |
| 394 | break; |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | default: |
| 397 | printk("Unknown boot switch (-%c)\n", c); |
| 398 | break; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | static void __init process_console(char *commands) |
| 403 | { |
| 404 | serial_console = 0; |
| 405 | commands += 8; |
| 406 | /* Linux-style serial */ |
| 407 | if (!strncmp(commands, "ttyS", 4)) |
| 408 | serial_console = simple_strtoul(commands + 4, NULL, 10) + 1; |
| 409 | else if (!strncmp(commands, "tty", 3)) { |
| 410 | char c = *(commands + 3); |
| 411 | /* Solaris-style serial */ |
| 412 | if (c == 'a' || c == 'b') { |
| 413 | serial_console = c - 'a' + 1; |
| 414 | prom_printf ("Using /dev/tty%c as console.\n", c); |
| 415 | } |
| 416 | /* else Linux-style fbcon, not serial */ |
| 417 | } |
| 418 | #if defined(CONFIG_PROM_CONSOLE) |
| 419 | if (!strncmp(commands, "prom", 4)) { |
| 420 | char *p; |
| 421 | |
| 422 | for (p = commands - 8; *p && *p != ' '; p++) |
| 423 | *p = ' '; |
| 424 | conswitchp = &prom_con; |
| 425 | } |
| 426 | #endif |
| 427 | } |
| 428 | |
| 429 | static void __init boot_flags_init(char *commands) |
| 430 | { |
| 431 | while (*commands) { |
| 432 | /* Move to the start of the next "argument". */ |
| 433 | while (*commands && *commands == ' ') |
| 434 | commands++; |
| 435 | |
| 436 | /* Process any command switches, otherwise skip it. */ |
| 437 | if (*commands == '\0') |
| 438 | break; |
| 439 | if (*commands == '-') { |
| 440 | commands++; |
| 441 | while (*commands && *commands != ' ') |
| 442 | process_switch(*commands++); |
| 443 | continue; |
| 444 | } |
| 445 | if (!strncmp(commands, "console=", 8)) { |
| 446 | process_console(commands); |
| 447 | } else if (!strncmp(commands, "mem=", 4)) { |
| 448 | /* |
| 449 | * "mem=XXX[kKmM]" overrides the PROM-reported |
| 450 | * memory size. |
| 451 | */ |
| 452 | cmdline_memory_size = simple_strtoul(commands + 4, |
| 453 | &commands, 0); |
| 454 | if (*commands == 'K' || *commands == 'k') { |
| 455 | cmdline_memory_size <<= 10; |
| 456 | commands++; |
| 457 | } else if (*commands=='M' || *commands=='m') { |
| 458 | cmdline_memory_size <<= 20; |
| 459 | commands++; |
| 460 | } |
| 461 | } |
| 462 | while (*commands && *commands != ' ') |
| 463 | commands++; |
| 464 | } |
| 465 | } |
| 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | extern void panic_setup(char *, int *); |
| 468 | |
| 469 | extern unsigned short root_flags; |
| 470 | extern unsigned short root_dev; |
| 471 | extern unsigned short ram_flags; |
| 472 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
| 473 | #define RAMDISK_PROMPT_FLAG 0x8000 |
| 474 | #define RAMDISK_LOAD_FLAG 0x4000 |
| 475 | |
| 476 | extern int root_mountflags; |
| 477 | |
| 478 | char reboot_command[COMMAND_LINE_SIZE]; |
| 479 | |
| 480 | static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; |
| 481 | |
| 482 | void register_prom_callbacks(void) |
| 483 | { |
| 484 | prom_setcallback(prom_callback); |
| 485 | prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; " |
| 486 | "' linux-va>tte-data to va>tte-data"); |
| 487 | prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; " |
| 488 | "' linux-.soft1 to .soft1"); |
| 489 | prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; " |
| 490 | "' linux-.soft2 to .soft2"); |
| 491 | } |
| 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | void __init setup_arch(char **cmdline_p) |
| 494 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | /* Initialize PROM console and command line. */ |
| 496 | *cmdline_p = prom_getbootargs(); |
| 497 | strcpy(saved_command_line, *cmdline_p); |
| 498 | |
| 499 | printk("ARCH: SUN4U\n"); |
| 500 | |
| 501 | #ifdef CONFIG_DUMMY_CONSOLE |
| 502 | conswitchp = &dummy_con; |
| 503 | #elif defined(CONFIG_PROM_CONSOLE) |
| 504 | conswitchp = &prom_con; |
| 505 | #endif |
| 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | /* Work out if we are starfire early on */ |
| 508 | check_if_starfire(); |
| 509 | |
| 510 | boot_flags_init(*cmdline_p); |
| 511 | |
| 512 | idprom_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | if (!root_flags) |
| 515 | root_mountflags &= ~MS_RDONLY; |
| 516 | ROOT_DEV = old_decode_dev(root_dev); |
| 517 | #ifdef CONFIG_BLK_DEV_INITRD |
| 518 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; |
| 519 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); |
| 520 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); |
| 521 | #endif |
| 522 | |
| 523 | init_task.thread_info->kregs = &fake_swapper_regs; |
| 524 | |
| 525 | #ifdef CONFIG_IP_PNP |
| 526 | if (!ic_set_manually) { |
| 527 | int chosen = prom_finddevice ("/chosen"); |
| 528 | u32 cl, sv, gw; |
| 529 | |
| 530 | cl = prom_getintdefault (chosen, "client-ip", 0); |
| 531 | sv = prom_getintdefault (chosen, "server-ip", 0); |
| 532 | gw = prom_getintdefault (chosen, "gateway-ip", 0); |
| 533 | if (cl && sv) { |
| 534 | ic_myaddr = cl; |
| 535 | ic_servaddr = sv; |
| 536 | if (gw) |
| 537 | ic_gateway = gw; |
| 538 | #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) |
| 539 | ic_proto_enabled = 0; |
| 540 | #endif |
| 541 | } |
| 542 | } |
| 543 | #endif |
| 544 | |
| 545 | paging_init(); |
| 546 | } |
| 547 | |
| 548 | static int __init set_preferred_console(void) |
| 549 | { |
| 550 | int idev, odev; |
| 551 | |
| 552 | /* The user has requested a console so this is already set up. */ |
| 553 | if (serial_console >= 0) |
| 554 | return -EBUSY; |
| 555 | |
| 556 | idev = prom_query_input_device(); |
| 557 | odev = prom_query_output_device(); |
| 558 | if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) { |
| 559 | serial_console = 0; |
| 560 | } else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) { |
| 561 | serial_console = 1; |
| 562 | } else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) { |
| 563 | serial_console = 2; |
| 564 | } else { |
| 565 | prom_printf("Inconsistent console: " |
| 566 | "input %d, output %d\n", |
| 567 | idev, odev); |
| 568 | prom_halt(); |
| 569 | } |
| 570 | |
| 571 | if (serial_console) |
| 572 | return add_preferred_console("ttyS", serial_console - 1, NULL); |
| 573 | |
| 574 | return -ENODEV; |
| 575 | } |
| 576 | console_initcall(set_preferred_console); |
| 577 | |
| 578 | /* BUFFER is PAGE_SIZE bytes long. */ |
| 579 | |
| 580 | extern char *sparc_cpu_type; |
| 581 | extern char *sparc_fpu_type; |
| 582 | |
| 583 | extern void smp_info(struct seq_file *); |
| 584 | extern void smp_bogo(struct seq_file *); |
| 585 | extern void mmu_info(struct seq_file *); |
| 586 | |
David S. Miller | 80dc0d6 | 2005-09-26 00:32:17 -0700 | [diff] [blame] | 587 | unsigned int dcache_parity_tl1_occurred; |
| 588 | unsigned int icache_parity_tl1_occurred; |
| 589 | |
David S. Miller | 4d45cba | 2005-11-11 12:48:56 -0800 | [diff] [blame] | 590 | static int ncpus_probed; |
| 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | static int show_cpuinfo(struct seq_file *m, void *__unused) |
| 593 | { |
| 594 | seq_printf(m, |
| 595 | "cpu\t\t: %s\n" |
| 596 | "fpu\t\t: %s\n" |
| 597 | "promlib\t\t: Version 3 Revision %d\n" |
| 598 | "prom\t\t: %d.%d.%d\n" |
| 599 | "type\t\t: sun4u\n" |
David S. Miller | 4d45cba | 2005-11-11 12:48:56 -0800 | [diff] [blame] | 600 | "ncpus probed\t: %d\n" |
| 601 | "ncpus active\t: %d\n" |
David S. Miller | 80dc0d6 | 2005-09-26 00:32:17 -0700 | [diff] [blame] | 602 | "D$ parity tl1\t: %u\n" |
| 603 | "I$ parity tl1\t: %u\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | #ifndef CONFIG_SMP |
| 605 | "Cpu0Bogo\t: %lu.%02lu\n" |
| 606 | "Cpu0ClkTck\t: %016lx\n" |
| 607 | #endif |
| 608 | , |
| 609 | sparc_cpu_type, |
| 610 | sparc_fpu_type, |
| 611 | prom_rev, |
| 612 | prom_prev >> 16, |
| 613 | (prom_prev >> 8) & 0xff, |
| 614 | prom_prev & 0xff, |
David S. Miller | 4d45cba | 2005-11-11 12:48:56 -0800 | [diff] [blame] | 615 | ncpus_probed, |
| 616 | num_online_cpus(), |
David S. Miller | 80dc0d6 | 2005-09-26 00:32:17 -0700 | [diff] [blame] | 617 | dcache_parity_tl1_occurred, |
| 618 | icache_parity_tl1_occurred |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | #ifndef CONFIG_SMP |
| 620 | , cpu_data(0).udelay_val/(500000/HZ), |
| 621 | (cpu_data(0).udelay_val/(5000/HZ)) % 100, |
| 622 | cpu_data(0).clock_tick |
| 623 | #endif |
| 624 | ); |
| 625 | #ifdef CONFIG_SMP |
| 626 | smp_bogo(m); |
| 627 | #endif |
| 628 | mmu_info(m); |
| 629 | #ifdef CONFIG_SMP |
| 630 | smp_info(m); |
| 631 | #endif |
| 632 | return 0; |
| 633 | } |
| 634 | |
| 635 | static void *c_start(struct seq_file *m, loff_t *pos) |
| 636 | { |
| 637 | /* The pointer we are returning is arbitrary, |
| 638 | * it just has to be non-NULL and not IS_ERR |
| 639 | * in the success case. |
| 640 | */ |
| 641 | return *pos == 0 ? &c_start : NULL; |
| 642 | } |
| 643 | |
| 644 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
| 645 | { |
| 646 | ++*pos; |
| 647 | return c_start(m, pos); |
| 648 | } |
| 649 | |
| 650 | static void c_stop(struct seq_file *m, void *v) |
| 651 | { |
| 652 | } |
| 653 | |
| 654 | struct seq_operations cpuinfo_op = { |
| 655 | .start =c_start, |
| 656 | .next = c_next, |
| 657 | .stop = c_stop, |
| 658 | .show = show_cpuinfo, |
| 659 | }; |
| 660 | |
| 661 | extern int stop_a_enabled; |
| 662 | |
| 663 | void sun_do_break(void) |
| 664 | { |
| 665 | if (!stop_a_enabled) |
| 666 | return; |
| 667 | |
| 668 | prom_printf("\n"); |
| 669 | flush_user_windows(); |
| 670 | |
| 671 | prom_cmdline(); |
| 672 | } |
| 673 | |
| 674 | int serial_console = -1; |
| 675 | int stop_a_enabled = 1; |
| 676 | |
| 677 | static int __init topology_init(void) |
| 678 | { |
| 679 | int i, err; |
| 680 | |
| 681 | err = -ENOMEM; |
David S. Miller | 4d45cba | 2005-11-11 12:48:56 -0800 | [diff] [blame] | 682 | |
| 683 | /* Count the number of physically present processors in |
| 684 | * the machine, even on uniprocessor, so that /proc/cpuinfo |
| 685 | * output is consistent with 2.4.x |
| 686 | */ |
| 687 | ncpus_probed = 0; |
| 688 | while (!cpu_find_by_instance(ncpus_probed, NULL, NULL)) |
| 689 | ncpus_probed++; |
| 690 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | for (i = 0; i < NR_CPUS; i++) { |
| 692 | if (cpu_possible(i)) { |
| 693 | struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL); |
| 694 | |
| 695 | if (p) { |
| 696 | memset(p, 0, sizeof(*p)); |
| 697 | register_cpu(p, i, NULL); |
| 698 | err = 0; |
| 699 | } |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | return err; |
| 704 | } |
| 705 | |
| 706 | subsys_initcall(topology_init); |