Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/m32r/kernel/setup.c |
| 3 | * |
| 4 | * Setup routines for Renesas M32R |
| 5 | * |
| 6 | * Copyright (c) 2001, 2002 Hiroyuki Kondo, Hirokazu Takata, |
| 7 | * Hitoshi Yamamoto |
| 8 | */ |
| 9 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <linux/init.h> |
Hirokazu Takata | 7c1c4e5 | 2006-04-10 22:53:18 -0700 | [diff] [blame] | 11 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/stddef.h> |
| 13 | #include <linux/fs.h> |
| 14 | #include <linux/sched.h> |
| 15 | #include <linux/ioport.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/bootmem.h> |
| 18 | #include <linux/console.h> |
| 19 | #include <linux/initrd.h> |
| 20 | #include <linux/major.h> |
| 21 | #include <linux/root_dev.h> |
| 22 | #include <linux/seq_file.h> |
| 23 | #include <linux/timex.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 24 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/cpu.h> |
| 26 | #include <linux/nodemask.h> |
Dave Hansen | 22a9835 | 2006-03-27 01:16:04 -0800 | [diff] [blame] | 27 | #include <linux/pfn.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | #include <asm/processor.h> |
| 30 | #include <asm/pgtable.h> |
| 31 | #include <asm/io.h> |
| 32 | #include <asm/mmu_context.h> |
| 33 | #include <asm/m32r.h> |
| 34 | #include <asm/setup.h> |
| 35 | #include <asm/sections.h> |
| 36 | |
| 37 | #ifdef CONFIG_MMU |
| 38 | extern void init_mmu(void); |
| 39 | #endif |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | extern char _end[]; |
| 42 | |
| 43 | /* |
| 44 | * Machine setup.. |
| 45 | */ |
| 46 | struct cpuinfo_m32r boot_cpu_data; |
| 47 | |
| 48 | #ifdef CONFIG_BLK_DEV_RAM |
| 49 | extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */ |
| 50 | extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */ |
| 51 | extern int rd_image_start; /* starting block # of image */ |
| 52 | #endif |
| 53 | |
| 54 | #if defined(CONFIG_VGA_CONSOLE) |
| 55 | struct screen_info screen_info = { |
| 56 | .orig_video_lines = 25, |
| 57 | .orig_video_cols = 80, |
| 58 | .orig_video_mode = 0, |
| 59 | .orig_video_ega_bx = 0, |
| 60 | .orig_video_isVGA = 1, |
| 61 | .orig_video_points = 8 |
| 62 | }; |
| 63 | #endif |
| 64 | |
| 65 | extern int root_mountflags; |
| 66 | |
Alon Bar-Lev | 3561794 | 2007-02-12 00:54:13 -0800 | [diff] [blame] | 67 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | static struct resource data_resource = { |
| 70 | .name = "Kernel data", |
| 71 | .start = 0, |
| 72 | .end = 0, |
| 73 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 74 | }; |
| 75 | |
| 76 | static struct resource code_resource = { |
| 77 | .name = "Kernel code", |
| 78 | .start = 0, |
| 79 | .end = 0, |
| 80 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 81 | }; |
| 82 | |
| 83 | unsigned long memory_start; |
| 84 | unsigned long memory_end; |
| 85 | |
| 86 | void __init setup_arch(char **); |
| 87 | int get_cpuinfo(char *); |
| 88 | |
| 89 | static __inline__ void parse_mem_cmdline(char ** cmdline_p) |
| 90 | { |
| 91 | char c = ' '; |
| 92 | char *to = command_line; |
| 93 | char *from = COMMAND_LINE; |
| 94 | int len = 0; |
| 95 | int usermem = 0; |
| 96 | |
| 97 | /* Save unparsed command line copy for /proc/cmdline */ |
Alon Bar-Lev | 3561794 | 2007-02-12 00:54:13 -0800 | [diff] [blame] | 98 | memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE); |
| 99 | boot_command_line[COMMAND_LINE_SIZE-1] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
| 101 | memory_start = (unsigned long)CONFIG_MEMORY_START+PAGE_OFFSET; |
| 102 | memory_end = memory_start+(unsigned long)CONFIG_MEMORY_SIZE; |
| 103 | |
| 104 | for ( ; ; ) { |
| 105 | if (c == ' ' && !memcmp(from, "mem=", 4)) { |
| 106 | if (to != command_line) |
| 107 | to--; |
| 108 | |
| 109 | { |
| 110 | unsigned long mem_size; |
| 111 | |
| 112 | usermem = 1; |
| 113 | mem_size = memparse(from+4, &from); |
| 114 | memory_end = memory_start + mem_size; |
| 115 | } |
| 116 | } |
| 117 | c = *(from++); |
| 118 | if (!c) |
| 119 | break; |
| 120 | |
| 121 | if (COMMAND_LINE_SIZE <= ++len) |
| 122 | break; |
| 123 | |
| 124 | *(to++) = c; |
| 125 | } |
| 126 | *to = '\0'; |
| 127 | *cmdline_p = command_line; |
| 128 | if (usermem) |
| 129 | printk(KERN_INFO "user-defined physical RAM map:\n"); |
| 130 | } |
| 131 | |
| 132 | #ifndef CONFIG_DISCONTIGMEM |
| 133 | static unsigned long __init setup_memory(void) |
| 134 | { |
| 135 | unsigned long start_pfn, max_low_pfn, bootmap_size; |
| 136 | |
| 137 | start_pfn = PFN_UP( __pa(_end) ); |
| 138 | max_low_pfn = PFN_DOWN( __pa(memory_end) ); |
| 139 | |
| 140 | /* |
| 141 | * Initialize the boot-time allocator (with low memory only): |
| 142 | */ |
| 143 | bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn, |
| 144 | CONFIG_MEMORY_START>>PAGE_SHIFT, max_low_pfn); |
| 145 | |
| 146 | /* |
| 147 | * Register fully available low RAM pages with the bootmem allocator. |
| 148 | */ |
| 149 | { |
| 150 | unsigned long curr_pfn; |
| 151 | unsigned long last_pfn; |
| 152 | unsigned long pages; |
| 153 | |
| 154 | /* |
| 155 | * We are rounding up the start address of usable memory: |
| 156 | */ |
| 157 | curr_pfn = PFN_UP(__pa(memory_start)); |
| 158 | |
| 159 | /* |
| 160 | * ... and at the end of the usable range downwards: |
| 161 | */ |
| 162 | last_pfn = PFN_DOWN(__pa(memory_end)); |
| 163 | |
| 164 | if (last_pfn > max_low_pfn) |
| 165 | last_pfn = max_low_pfn; |
| 166 | |
| 167 | pages = last_pfn - curr_pfn; |
| 168 | free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages)); |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * Reserve the kernel text and |
| 173 | * Reserve the bootmem bitmap. We do this in two steps (first step |
| 174 | * was init_bootmem()), because this catches the (definitely buggy) |
| 175 | * case of us accidentally initializing the bootmem allocator with |
| 176 | * an invalid RAM area. |
| 177 | */ |
| 178 | reserve_bootmem(CONFIG_MEMORY_START + PAGE_SIZE, |
| 179 | (PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE - 1) |
| 180 | - CONFIG_MEMORY_START); |
| 181 | |
| 182 | /* |
| 183 | * reserve physical page 0 - it's a special BIOS page on many boxes, |
| 184 | * enabling clean reboots, SMP operation, laptop functions. |
| 185 | */ |
| 186 | reserve_bootmem(CONFIG_MEMORY_START, PAGE_SIZE); |
| 187 | |
| 188 | /* |
| 189 | * reserve memory hole |
| 190 | */ |
| 191 | #ifdef CONFIG_MEMHOLE |
| 192 | reserve_bootmem(CONFIG_MEMHOLE_START, CONFIG_MEMHOLE_SIZE); |
| 193 | #endif |
| 194 | |
| 195 | #ifdef CONFIG_BLK_DEV_INITRD |
| 196 | if (LOADER_TYPE && INITRD_START) { |
| 197 | if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) { |
| 198 | reserve_bootmem(INITRD_START, INITRD_SIZE); |
Henry Nestler | 19e5d9c | 2006-12-06 20:37:45 -0800 | [diff] [blame] | 199 | initrd_start = INITRD_START + PAGE_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | initrd_end = initrd_start + INITRD_SIZE; |
| 201 | printk("initrd:start[%08lx],size[%08lx]\n", |
| 202 | initrd_start, INITRD_SIZE); |
| 203 | } else { |
| 204 | printk("initrd extends beyond end of memory " |
| 205 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", |
| 206 | INITRD_START + INITRD_SIZE, |
| 207 | max_low_pfn << PAGE_SHIFT); |
| 208 | |
| 209 | initrd_start = 0; |
| 210 | } |
| 211 | } |
| 212 | #endif |
| 213 | |
| 214 | return max_low_pfn; |
| 215 | } |
| 216 | #else /* CONFIG_DISCONTIGMEM */ |
| 217 | extern unsigned long setup_memory(void); |
| 218 | #endif /* CONFIG_DISCONTIGMEM */ |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | void __init setup_arch(char **cmdline_p) |
| 221 | { |
| 222 | ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); |
| 223 | |
| 224 | boot_cpu_data.cpu_clock = M32R_CPUCLK; |
| 225 | boot_cpu_data.bus_clock = M32R_BUSCLK; |
| 226 | boot_cpu_data.timer_divide = M32R_TIMER_DIVIDE; |
| 227 | |
| 228 | #ifdef CONFIG_BLK_DEV_RAM |
| 229 | rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; |
| 230 | rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); |
| 231 | rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); |
| 232 | #endif |
| 233 | |
| 234 | if (!MOUNT_ROOT_RDONLY) |
| 235 | root_mountflags &= ~MS_RDONLY; |
| 236 | |
| 237 | #ifdef CONFIG_VT |
| 238 | #if defined(CONFIG_VGA_CONSOLE) |
| 239 | conswitchp = &vga_con; |
| 240 | #elif defined(CONFIG_DUMMY_CONSOLE) |
| 241 | conswitchp = &dummy_con; |
| 242 | #endif |
| 243 | #endif |
| 244 | |
| 245 | #ifdef CONFIG_DISCONTIGMEM |
| 246 | nodes_clear(node_online_map); |
| 247 | node_set_online(0); |
| 248 | node_set_online(1); |
| 249 | #endif /* CONFIG_DISCONTIGMEM */ |
| 250 | |
| 251 | init_mm.start_code = (unsigned long) _text; |
| 252 | init_mm.end_code = (unsigned long) _etext; |
| 253 | init_mm.end_data = (unsigned long) _edata; |
| 254 | init_mm.brk = (unsigned long) _end; |
| 255 | |
| 256 | code_resource.start = virt_to_phys(_text); |
| 257 | code_resource.end = virt_to_phys(_etext)-1; |
| 258 | data_resource.start = virt_to_phys(_etext); |
| 259 | data_resource.end = virt_to_phys(_edata)-1; |
| 260 | |
| 261 | parse_mem_cmdline(cmdline_p); |
| 262 | |
| 263 | setup_memory(); |
| 264 | |
| 265 | paging_init(); |
| 266 | } |
| 267 | |
Hirokazu Takata | 7c1c4e5 | 2006-04-10 22:53:18 -0700 | [diff] [blame] | 268 | static struct cpu cpu_devices[NR_CPUS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
| 270 | static int __init topology_init(void) |
| 271 | { |
Hirokazu Takata | 7c1c4e5 | 2006-04-10 22:53:18 -0700 | [diff] [blame] | 272 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Hirokazu Takata | 7c1c4e5 | 2006-04-10 22:53:18 -0700 | [diff] [blame] | 274 | for_each_present_cpu(i) |
KAMEZAWA Hiroyuki | 76b67ed | 2006-06-27 02:53:41 -0700 | [diff] [blame] | 275 | register_cpu(&cpu_devices[i], i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | subsys_initcall(topology_init); |
| 281 | |
| 282 | #ifdef CONFIG_PROC_FS |
| 283 | /* |
| 284 | * Get CPU information for use by the procfs. |
| 285 | */ |
| 286 | static int show_cpuinfo(struct seq_file *m, void *v) |
| 287 | { |
| 288 | struct cpuinfo_m32r *c = v; |
| 289 | unsigned long cpu = c - cpu_data; |
| 290 | |
| 291 | #ifdef CONFIG_SMP |
| 292 | if (!cpu_online(cpu)) |
| 293 | return 0; |
| 294 | #endif /* CONFIG_SMP */ |
| 295 | |
| 296 | seq_printf(m, "processor\t: %ld\n", cpu); |
| 297 | |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 298 | #if defined(CONFIG_CHIP_VDEC2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | seq_printf(m, "cpu family\t: VDEC2\n" |
| 300 | "cache size\t: Unknown\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 301 | #elif defined(CONFIG_CHIP_M32700) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | seq_printf(m,"cpu family\t: M32700\n" |
| 303 | "cache size\t: I-8KB/D-8KB\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 304 | #elif defined(CONFIG_CHIP_M32102) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | seq_printf(m,"cpu family\t: M32102\n" |
| 306 | "cache size\t: I-8KB\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 307 | #elif defined(CONFIG_CHIP_OPSP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | seq_printf(m,"cpu family\t: OPSP\n" |
| 309 | "cache size\t: I-8KB/D-8KB\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 310 | #elif defined(CONFIG_CHIP_MP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | seq_printf(m, "cpu family\t: M32R-MP\n" |
| 312 | "cache size\t: I-xxKB/D-xxKB\n"); |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 313 | #elif defined(CONFIG_CHIP_M32104) |
| 314 | seq_printf(m,"cpu family\t: M32104\n" |
| 315 | "cache size\t: I-8KB/D-8KB\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | #else |
| 317 | seq_printf(m, "cpu family\t: Unknown\n"); |
| 318 | #endif |
| 319 | seq_printf(m, "bogomips\t: %lu.%02lu\n", |
| 320 | c->loops_per_jiffy/(500000/HZ), |
| 321 | (c->loops_per_jiffy/(5000/HZ)) % 100); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 322 | #if defined(CONFIG_PLAT_MAPPI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | seq_printf(m, "Machine\t\t: Mappi Evaluation board\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 324 | #elif defined(CONFIG_PLAT_MAPPI2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | seq_printf(m, "Machine\t\t: Mappi-II Evaluation board\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 326 | #elif defined(CONFIG_PLAT_MAPPI3) |
Hirokazu Takata | 2368086 | 2005-06-21 17:16:10 -0700 | [diff] [blame] | 327 | seq_printf(m, "Machine\t\t: Mappi-III Evaluation board\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 328 | #elif defined(CONFIG_PLAT_M32700UT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | seq_printf(m, "Machine\t\t: M32700UT Evaluation board\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 330 | #elif defined(CONFIG_PLAT_OPSPUT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | seq_printf(m, "Machine\t\t: OPSPUT Evaluation board\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 332 | #elif defined(CONFIG_PLAT_USRV) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | seq_printf(m, "Machine\t\t: uServer\n"); |
Hirokazu Takata | c978b01 | 2005-10-30 15:00:04 -0800 | [diff] [blame] | 334 | #elif defined(CONFIG_PLAT_OAKS32R) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | seq_printf(m, "Machine\t\t: OAKS32R\n"); |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 336 | #elif defined(CONFIG_PLAT_M32104UT) |
| 337 | seq_printf(m, "Machine\t\t: M3T-M32104UT uT Engine board\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | #else |
| 339 | seq_printf(m, "Machine\t\t: Unknown\n"); |
| 340 | #endif |
| 341 | |
| 342 | #define PRINT_CLOCK(name, value) \ |
| 343 | seq_printf(m, name " clock\t: %d.%02dMHz\n", \ |
| 344 | ((value) / 1000000), ((value) % 1000000)/10000) |
| 345 | |
| 346 | PRINT_CLOCK("CPU", (int)c->cpu_clock); |
| 347 | PRINT_CLOCK("Bus", (int)c->bus_clock); |
| 348 | |
| 349 | seq_printf(m, "\n"); |
| 350 | |
| 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | static void *c_start(struct seq_file *m, loff_t *pos) |
| 355 | { |
| 356 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; |
| 357 | } |
| 358 | |
| 359 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
| 360 | { |
| 361 | ++*pos; |
| 362 | return c_start(m, pos); |
| 363 | } |
| 364 | |
| 365 | static void c_stop(struct seq_file *m, void *v) |
| 366 | { |
| 367 | } |
| 368 | |
| 369 | struct seq_operations cpuinfo_op = { |
Al Viro | 7857a7f | 2006-10-11 17:24:25 +0100 | [diff] [blame] | 370 | .start = c_start, |
| 371 | .next = c_next, |
| 372 | .stop = c_stop, |
| 373 | .show = show_cpuinfo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | }; |
| 375 | #endif /* CONFIG_PROC_FS */ |
| 376 | |
| 377 | unsigned long cpu_initialized __initdata = 0; |
| 378 | |
| 379 | /* |
| 380 | * cpu_init() initializes state that is per-CPU. Some data is already |
| 381 | * initialized (naturally) in the bootstrap process. |
| 382 | * We reload them nevertheless, this function acts as a |
| 383 | * 'CPU state barrier', nothing should get across. |
| 384 | */ |
| 385 | #if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \ |
| 386 | || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \ |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 387 | || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | void __init cpu_init (void) |
| 389 | { |
| 390 | int cpu_id = smp_processor_id(); |
| 391 | |
| 392 | if (test_and_set_bit(cpu_id, &cpu_initialized)) { |
| 393 | printk(KERN_WARNING "CPU#%d already initialized!\n", cpu_id); |
| 394 | for ( ; ; ) |
| 395 | local_irq_enable(); |
| 396 | } |
| 397 | printk(KERN_INFO "Initializing CPU#%d\n", cpu_id); |
| 398 | |
| 399 | /* Set up and load the per-CPU TSS and LDT */ |
| 400 | atomic_inc(&init_mm.mm_count); |
| 401 | current->active_mm = &init_mm; |
| 402 | if (current->mm) |
| 403 | BUG(); |
| 404 | |
| 405 | /* Force FPU initialization */ |
| 406 | current_thread_info()->status = 0; |
| 407 | clear_used_math(); |
| 408 | |
| 409 | #ifdef CONFIG_MMU |
| 410 | /* Set up MMU */ |
| 411 | init_mmu(); |
| 412 | #endif |
| 413 | |
| 414 | /* Set up ICUIMASK */ |
| 415 | outl(0x00070000, M32R_ICU_IMASK_PORTL); /* imask=111 */ |
| 416 | } |
| 417 | #endif /* defined(CONFIG_CHIP_VDEC2) ... */ |