Adrian Bunk | 88278ca | 2008-05-19 16:53:02 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * linux/arch/sparc/kernel/setup.c |
| 3 | * |
| 4 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright (C) 2000 Anton Blanchard (anton@samba.org) |
| 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 <linux/initrd.h> |
| 17 | #include <asm/smp.h> |
| 18 | #include <linux/user.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 19 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/fs.h> |
| 22 | #include <linux/seq_file.h> |
| 23 | #include <linux/syscalls.h> |
| 24 | #include <linux/kdev_t.h> |
| 25 | #include <linux/major.h> |
| 26 | #include <linux/string.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/interrupt.h> |
| 29 | #include <linux/console.h> |
| 30 | #include <linux/spinlock.h> |
| 31 | #include <linux/root_dev.h> |
Bob Breuer | a8cbdce | 2006-06-20 00:28:33 -0700 | [diff] [blame] | 32 | #include <linux/cpu.h> |
Christoph Hellwig | 1eeb66a | 2007-05-08 00:27:03 -0700 | [diff] [blame] | 33 | #include <linux/kdebug.h> |
Paul Gortmaker | 7b64db6 | 2011-07-18 15:57:46 -0400 | [diff] [blame] | 34 | #include <linux/export.h> |
Sam Ravnborg | 4efb55e | 2012-05-25 21:20:08 +0000 | [diff] [blame] | 35 | #include <linux/start_kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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/traps.h> |
| 43 | #include <asm/vaddrs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <asm/mbus.h> |
| 45 | #include <asm/idprom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/cpudata.h> |
| 47 | #include <asm/setup.h> |
David Howells | d550bbd | 2012-03-28 18:30:03 +0100 | [diff] [blame] | 48 | #include <asm/cacheflush.h> |
Sam Ravnborg | 5b8b93c | 2012-05-25 21:20:09 +0000 | [diff] [blame] | 49 | #include <asm/sections.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Sam Ravnborg | 53ae341 | 2008-12-07 00:02:08 -0800 | [diff] [blame] | 51 | #include "kernel.h" |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | struct screen_info screen_info = { |
| 54 | 0, 0, /* orig-x, orig-y */ |
| 55 | 0, /* unused */ |
| 56 | 0, /* orig-video-page */ |
| 57 | 0, /* orig-video-mode */ |
| 58 | 128, /* orig-video-cols */ |
| 59 | 0,0,0, /* ega_ax, ega_bx, ega_cx */ |
| 60 | 54, /* orig-video-lines */ |
| 61 | 0, /* orig-video-isVGA */ |
| 62 | 16 /* orig-video-points */ |
| 63 | }; |
| 64 | |
| 65 | /* Typing sync at the prom prompt calls the function pointed to by |
| 66 | * romvec->pv_synchook which I set to the following function. |
| 67 | * This should sync all filesystems and return, for now it just |
| 68 | * prints out pretty messages and returns. |
| 69 | */ |
| 70 | |
| 71 | extern unsigned long trapbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | /* Pretty sick eh? */ |
Adrian Bunk | c61c65c | 2008-06-05 11:40:58 -0700 | [diff] [blame] | 74 | static void prom_sync_me(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
| 76 | unsigned long prom_tbr, flags; |
| 77 | |
| 78 | /* XXX Badly broken. FIX! - Anton */ |
| 79 | local_irq_save(flags); |
| 80 | __asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (prom_tbr)); |
| 81 | __asm__ __volatile__("wr %0, 0x0, %%tbr\n\t" |
| 82 | "nop\n\t" |
| 83 | "nop\n\t" |
| 84 | "nop\n\t" : : "r" (&trapbase)); |
| 85 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | prom_printf("PROM SYNC COMMAND...\n"); |
David Rientjes | 7bf02ea | 2011-05-24 17:11:16 -0700 | [diff] [blame] | 87 | show_free_areas(0); |
Paul E. McKenney | 29f043a | 2011-11-10 15:56:46 -0800 | [diff] [blame] | 88 | if (!is_idle_task(current)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | local_irq_enable(); |
| 90 | sys_sync(); |
| 91 | local_irq_disable(); |
| 92 | } |
| 93 | prom_printf("Returning to prom\n"); |
| 94 | |
| 95 | __asm__ __volatile__("wr %0, 0x0, %%tbr\n\t" |
| 96 | "nop\n\t" |
| 97 | "nop\n\t" |
| 98 | "nop\n\t" : : "r" (prom_tbr)); |
| 99 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
Adrian Bunk | c61c65c | 2008-06-05 11:40:58 -0700 | [diff] [blame] | 102 | static unsigned int boot_flags __initdata = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | #define BOOTME_DEBUG 0x1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | /* Exported for mm/init.c:paging_init. */ |
| 106 | unsigned long cmdline_memory_size __initdata = 0; |
| 107 | |
Daniel Hellstrom | 5fcafb7 | 2011-04-21 04:20:23 +0000 | [diff] [blame] | 108 | /* which CPU booted us (0xff = not set) */ |
| 109 | unsigned char boot_cpu_id = 0xff; /* 0xff will make it into DATA section... */ |
Daniel Hellstrom | 5fcafb7 | 2011-04-21 04:20:23 +0000 | [diff] [blame] | 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | static void |
| 112 | prom_console_write(struct console *con, const char *s, unsigned n) |
| 113 | { |
| 114 | prom_write(s, n); |
| 115 | } |
| 116 | |
Sam Ravnborg | 7671fa2 | 2011-04-21 15:47:35 -0700 | [diff] [blame] | 117 | static struct console prom_early_console = { |
| 118 | .name = "earlyprom", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | .write = prom_console_write, |
Sam Ravnborg | 7671fa2 | 2011-04-21 15:47:35 -0700 | [diff] [blame] | 120 | .flags = CON_PRINTBUFFER | CON_BOOT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | .index = -1, |
| 122 | }; |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* |
| 125 | * Process kernel command line switches that are specific to the |
| 126 | * SPARC or that require special low-level processing. |
| 127 | */ |
| 128 | static void __init process_switch(char c) |
| 129 | { |
| 130 | switch (c) { |
| 131 | case 'd': |
| 132 | boot_flags |= BOOTME_DEBUG; |
| 133 | break; |
| 134 | case 's': |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | break; |
| 136 | case 'h': |
| 137 | prom_printf("boot_flags_init: Halt!\n"); |
| 138 | prom_halt(); |
| 139 | break; |
| 140 | case 'p': |
David S. Miller | 11032c1 | 2011-09-21 12:48:06 -0700 | [diff] [blame] | 141 | prom_early_console.flags &= ~CON_BOOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | break; |
| 143 | default: |
| 144 | printk("Unknown boot switch (-%c)\n", c); |
| 145 | break; |
| 146 | } |
| 147 | } |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | static void __init boot_flags_init(char *commands) |
| 150 | { |
| 151 | while (*commands) { |
| 152 | /* Move to the start of the next "argument". */ |
| 153 | while (*commands && *commands == ' ') |
| 154 | commands++; |
| 155 | |
| 156 | /* Process any command switches, otherwise skip it. */ |
| 157 | if (*commands == '\0') |
| 158 | break; |
| 159 | if (*commands == '-') { |
| 160 | commands++; |
| 161 | while (*commands && *commands != ' ') |
| 162 | process_switch(*commands++); |
| 163 | continue; |
| 164 | } |
David S. Miller | c73fcc8 | 2007-07-20 16:59:26 -0700 | [diff] [blame] | 165 | if (!strncmp(commands, "mem=", 4)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | /* |
| 167 | * "mem=XXX[kKmM] overrides the PROM-reported |
| 168 | * memory size. |
| 169 | */ |
| 170 | cmdline_memory_size = simple_strtoul(commands + 4, |
| 171 | &commands, 0); |
| 172 | if (*commands == 'K' || *commands == 'k') { |
| 173 | cmdline_memory_size <<= 10; |
| 174 | commands++; |
| 175 | } else if (*commands=='M' || *commands=='m') { |
| 176 | cmdline_memory_size <<= 20; |
| 177 | commands++; |
| 178 | } |
| 179 | } |
| 180 | while (*commands && *commands != ' ') |
| 181 | commands++; |
| 182 | } |
| 183 | } |
| 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | extern unsigned short root_flags; |
| 186 | extern unsigned short root_dev; |
| 187 | extern unsigned short ram_flags; |
| 188 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
| 189 | #define RAMDISK_PROMPT_FLAG 0x8000 |
| 190 | #define RAMDISK_LOAD_FLAG 0x4000 |
| 191 | |
| 192 | extern int root_mountflags; |
| 193 | |
| 194 | char reboot_command[COMMAND_LINE_SIZE]; |
Sam Ravnborg | 6943f3d | 2009-01-08 16:58:05 -0800 | [diff] [blame] | 195 | |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 196 | struct cpuid_patch_entry { |
| 197 | unsigned int addr; |
| 198 | unsigned int sun4d[3]; |
| 199 | unsigned int leon[3]; |
| 200 | }; |
| 201 | extern struct cpuid_patch_entry __cpuid_patch, __cpuid_patch_end; |
| 202 | |
| 203 | static void __init per_cpu_patch(void) |
| 204 | { |
| 205 | struct cpuid_patch_entry *p; |
| 206 | |
| 207 | if (sparc_cpu_model == sun4m) { |
| 208 | /* Nothing to do, this is what the unpatched code |
| 209 | * targets. |
| 210 | */ |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | p = &__cpuid_patch; |
| 215 | while (p < &__cpuid_patch_end) { |
| 216 | unsigned long addr = p->addr; |
| 217 | unsigned int *insns; |
| 218 | |
| 219 | switch (sparc_cpu_model) { |
| 220 | case sun4d: |
| 221 | insns = &p->sun4d[0]; |
| 222 | break; |
| 223 | |
| 224 | case sparc_leon: |
| 225 | insns = &p->leon[0]; |
| 226 | break; |
| 227 | default: |
| 228 | prom_printf("Unknown cpu type, halting.\n"); |
| 229 | prom_halt(); |
| 230 | } |
| 231 | *(unsigned int *) (addr + 0) = insns[0]; |
Sam Ravnborg | 1edc178 | 2012-05-20 17:27:53 +0200 | [diff] [blame] | 232 | flushi(addr + 0); |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 233 | *(unsigned int *) (addr + 4) = insns[1]; |
Sam Ravnborg | 1edc178 | 2012-05-20 17:27:53 +0200 | [diff] [blame] | 234 | flushi(addr + 4); |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 235 | *(unsigned int *) (addr + 8) = insns[2]; |
Sam Ravnborg | 1edc178 | 2012-05-20 17:27:53 +0200 | [diff] [blame] | 236 | flushi(addr + 8); |
Sam Ravnborg | 9cd5f82 | 2012-05-20 17:24:20 +0200 | [diff] [blame] | 237 | |
| 238 | p++; |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 239 | } |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Sam Ravnborg | 5b8b93c | 2012-05-25 21:20:09 +0000 | [diff] [blame] | 242 | struct leon_1insn_patch_entry { |
| 243 | unsigned int addr; |
| 244 | unsigned int insn; |
| 245 | }; |
| 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | enum sparc_cpu sparc_cpu_model; |
Sam Ravnborg | 6943f3d | 2009-01-08 16:58:05 -0800 | [diff] [blame] | 248 | EXPORT_SYMBOL(sparc_cpu_model); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
Sam Ravnborg | 5b8b93c | 2012-05-25 21:20:09 +0000 | [diff] [blame] | 250 | static __init void leon_patch(void) |
| 251 | { |
| 252 | struct leon_1insn_patch_entry *start = (void *)__leon_1insn_patch; |
| 253 | struct leon_1insn_patch_entry *end = (void *)__leon_1insn_patch_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Sam Ravnborg | 5b8b93c | 2012-05-25 21:20:09 +0000 | [diff] [blame] | 255 | /* Default instruction is leon - no patching */ |
| 256 | if (sparc_cpu_model == sparc_leon) |
| 257 | return; |
| 258 | |
| 259 | while (start < end) { |
| 260 | unsigned long addr = start->addr; |
| 261 | |
| 262 | *(unsigned int *)(addr) = start->insn; |
| 263 | flushi(addr); |
| 264 | |
| 265 | start++; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | struct tt_entry *sparc_ttable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | struct pt_regs fake_swapper_regs; |
| 271 | |
Sam Ravnborg | 4efb55e | 2012-05-25 21:20:08 +0000 | [diff] [blame] | 272 | /* Called from head_32.S - before we have setup anything |
| 273 | * in the kernel. Be very careful with what you do here. |
| 274 | */ |
| 275 | void __init sparc32_start_kernel(struct linux_romvec *rp) |
| 276 | { |
| 277 | prom_init(rp); |
Sam Ravnborg | 5b8b93c | 2012-05-25 21:20:09 +0000 | [diff] [blame] | 278 | |
| 279 | /* Set sparc_cpu_model */ |
| 280 | sparc_cpu_model = sun_unknown; |
| 281 | if (!strcmp(&cputypval[0], "sun4m")) |
| 282 | sparc_cpu_model = sun4m; |
| 283 | if (!strcmp(&cputypval[0], "sun4s")) |
| 284 | sparc_cpu_model = sun4m; /* CP-1200 with PROM 2.30 -E */ |
| 285 | if (!strcmp(&cputypval[0], "sun4d")) |
| 286 | sparc_cpu_model = sun4d; |
| 287 | if (!strcmp(&cputypval[0], "sun4e")) |
| 288 | sparc_cpu_model = sun4e; |
| 289 | if (!strcmp(&cputypval[0], "sun4u")) |
| 290 | sparc_cpu_model = sun4u; |
| 291 | if (!strncmp(&cputypval[0], "leon" , 4)) |
| 292 | sparc_cpu_model = sparc_leon; |
| 293 | |
| 294 | leon_patch(); |
Sam Ravnborg | 4efb55e | 2012-05-25 21:20:08 +0000 | [diff] [blame] | 295 | start_kernel(); |
| 296 | } |
| 297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | void __init setup_arch(char **cmdline_p) |
| 299 | { |
| 300 | int i; |
| 301 | unsigned long highest_paddr; |
| 302 | |
Sam Ravnborg | e405ae7 | 2011-01-04 11:39:11 +0000 | [diff] [blame] | 303 | sparc_ttable = (struct tt_entry *) &trapbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
| 305 | /* Initialize PROM console and command line. */ |
| 306 | *cmdline_p = prom_getbootargs(); |
Alon Bar-Lev | 08e7ca1 | 2007-02-12 00:54:21 -0800 | [diff] [blame] | 307 | strcpy(boot_command_line, *cmdline_p); |
David S. Miller | 3fbe36d | 2008-09-10 23:40:32 -0700 | [diff] [blame] | 308 | parse_early_param(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Sam Ravnborg | 7671fa2 | 2011-04-21 15:47:35 -0700 | [diff] [blame] | 310 | boot_flags_init(*cmdline_p); |
| 311 | |
| 312 | register_console(&prom_early_console); |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | printk("ARCH: "); |
| 315 | switch(sparc_cpu_model) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | case sun4m: |
| 317 | printk("SUN4M\n"); |
| 318 | break; |
| 319 | case sun4d: |
| 320 | printk("SUN4D\n"); |
| 321 | break; |
| 322 | case sun4e: |
| 323 | printk("SUN4E\n"); |
| 324 | break; |
| 325 | case sun4u: |
| 326 | printk("SUN4U\n"); |
| 327 | break; |
Konrad Eisele | 0fd7ef1 | 2009-08-17 00:13:31 +0000 | [diff] [blame] | 328 | case sparc_leon: |
| 329 | printk("LEON\n"); |
| 330 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | default: |
| 332 | printk("UNKNOWN!\n"); |
| 333 | break; |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 334 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | #ifdef CONFIG_DUMMY_CONSOLE |
| 337 | conswitchp = &dummy_con; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | idprom_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | load_mmu(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | phys_base = 0xffffffffUL; |
| 344 | highest_paddr = 0UL; |
| 345 | for (i = 0; sp_banks[i].num_bytes != 0; i++) { |
| 346 | unsigned long top; |
| 347 | |
| 348 | if (sp_banks[i].base_addr < phys_base) |
| 349 | phys_base = sp_banks[i].base_addr; |
| 350 | top = sp_banks[i].base_addr + |
| 351 | sp_banks[i].num_bytes; |
| 352 | if (highest_paddr < top) |
| 353 | highest_paddr = top; |
| 354 | } |
| 355 | pfn_base = phys_base >> PAGE_SHIFT; |
| 356 | |
| 357 | if (!root_flags) |
| 358 | root_mountflags &= ~MS_RDONLY; |
| 359 | ROOT_DEV = old_decode_dev(root_dev); |
Al Viro | 5d2170a | 2006-06-22 14:47:14 -0700 | [diff] [blame] | 360 | #ifdef CONFIG_BLK_DEV_RAM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; |
| 362 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); |
| 363 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); |
| 364 | #endif |
| 365 | |
| 366 | prom_setsync(prom_sync_me); |
| 367 | |
| 368 | if((boot_flags&BOOTME_DEBUG) && (linux_dbvec!=0) && |
| 369 | ((*(short *)linux_dbvec) != -1)) { |
| 370 | printk("Booted under KADB. Syncing trap table.\n"); |
| 371 | (*(linux_dbvec->teach_debugger))(); |
| 372 | } |
| 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | init_task.thread.kregs = &fake_swapper_regs; |
| 375 | |
Sam Ravnborg | 1edc178 | 2012-05-20 17:27:53 +0200 | [diff] [blame] | 376 | /* Run-time patch instructions to match the cpu model */ |
David S. Miller | c68e5d3 | 2012-05-13 23:09:04 -0700 | [diff] [blame] | 377 | per_cpu_patch(); |
| 378 | |
Sam Ravnborg | 1edc178 | 2012-05-20 17:27:53 +0200 | [diff] [blame] | 379 | paging_init(); |
| 380 | |
Krzysztof Helt | a23b423 | 2006-08-25 00:46:02 -0700 | [diff] [blame] | 381 | smp_setup_cpu_possible_map(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } |
| 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | extern int stop_a_enabled; |
| 385 | |
| 386 | void sun_do_break(void) |
| 387 | { |
| 388 | if (!stop_a_enabled) |
| 389 | return; |
| 390 | |
| 391 | printk("\n"); |
| 392 | flush_user_windows(); |
| 393 | |
| 394 | prom_cmdline(); |
| 395 | } |
Sam Ravnborg | 6943f3d | 2009-01-08 16:58:05 -0800 | [diff] [blame] | 396 | EXPORT_SYMBOL(sun_do_break); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | int stop_a_enabled = 1; |
Bob Breuer | a8cbdce | 2006-06-20 00:28:33 -0700 | [diff] [blame] | 399 | |
| 400 | static int __init topology_init(void) |
| 401 | { |
| 402 | int i, ncpus, err; |
| 403 | |
| 404 | /* Count the number of physically present processors in |
| 405 | * the machine, even on uniprocessor, so that /proc/cpuinfo |
| 406 | * output is consistent with 2.4.x |
| 407 | */ |
| 408 | ncpus = 0; |
| 409 | while (!cpu_find_by_instance(ncpus, NULL, NULL)) |
| 410 | ncpus++; |
| 411 | ncpus_probed = ncpus; |
| 412 | |
| 413 | err = 0; |
| 414 | for_each_online_cpu(i) { |
| 415 | struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 416 | if (!p) |
| 417 | err = -ENOMEM; |
| 418 | else |
Andrew Morton | 9458377 | 2006-06-29 02:24:27 -0700 | [diff] [blame] | 419 | register_cpu(p, i); |
Bob Breuer | a8cbdce | 2006-06-20 00:28:33 -0700 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | return err; |
| 423 | } |
| 424 | |
| 425 | subsys_initcall(topology_init); |