Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mm/proc-arm1020e.S: MMU functions for ARM1020 |
| 3 | * |
| 4 | * Copyright (C) 2000 ARM Limited |
| 5 | * Copyright (C) 2000 Deep Blue Solutions Ltd. |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 6 | * hacked for non-paged-MM by Hyok S. Choi, 2003. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | * |
| 23 | * These are the low level assembler for performing cache and TLB |
| 24 | * functions on the arm1020e. |
| 25 | * |
| 26 | * CONFIG_CPU_ARM1020_CPU_IDLE -> nohlt |
| 27 | */ |
| 28 | #include <linux/linkage.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/init.h> |
| 30 | #include <asm/assembler.h> |
Sam Ravnborg | e6ae744 | 2005-09-09 21:08:59 +0200 | [diff] [blame] | 31 | #include <asm/asm-offsets.h> |
Russell King | 5ec9407 | 2008-09-07 19:15:31 +0100 | [diff] [blame] | 32 | #include <asm/hwcap.h> |
Russell King | 74945c8 | 2006-03-16 14:44:36 +0000 | [diff] [blame] | 33 | #include <asm/pgtable-hwdef.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/pgtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <asm/ptrace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
Russell King | 00eb0f6 | 2006-07-03 12:36:07 +0100 | [diff] [blame] | 37 | #include "proc-macros.S" |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | /* |
| 40 | * This is the maximum size of an area which will be invalidated |
| 41 | * using the single invalidate entry instructions. Anything larger |
| 42 | * than this, and we go for the whole cache. |
| 43 | * |
| 44 | * This value should be chosen such that we choose the cheapest |
| 45 | * alternative. |
| 46 | */ |
| 47 | #define MAX_AREA_SIZE 32768 |
| 48 | |
| 49 | /* |
| 50 | * The size of one data cache line. |
| 51 | */ |
| 52 | #define CACHE_DLINESIZE 32 |
| 53 | |
| 54 | /* |
| 55 | * The number of data cache segments. |
| 56 | */ |
| 57 | #define CACHE_DSEGMENTS 16 |
| 58 | |
| 59 | /* |
| 60 | * The number of lines in a cache segment. |
| 61 | */ |
| 62 | #define CACHE_DENTRIES 64 |
| 63 | |
| 64 | /* |
| 65 | * This is the size at which it becomes more efficient to |
| 66 | * clean the whole cache, rather than using the individual |
| 67 | * cache line maintainence instructions. |
| 68 | */ |
| 69 | #define CACHE_DLIMIT 32768 |
| 70 | |
| 71 | .text |
| 72 | /* |
| 73 | * cpu_arm1020e_proc_init() |
| 74 | */ |
| 75 | ENTRY(cpu_arm1020e_proc_init) |
| 76 | mov pc, lr |
| 77 | |
| 78 | /* |
| 79 | * cpu_arm1020e_proc_fin() |
| 80 | */ |
| 81 | ENTRY(cpu_arm1020e_proc_fin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | mrc p15, 0, r0, c1, c0, 0 @ ctrl register |
| 83 | bic r0, r0, #0x1000 @ ...i............ |
| 84 | bic r0, r0, #0x000e @ ............wca. |
| 85 | mcr p15, 0, r0, c1, c0, 0 @ disable caches |
Russell King | 9ca03a2 | 2010-07-26 12:22:12 +0100 | [diff] [blame] | 86 | mov pc, lr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | /* |
| 89 | * cpu_arm1020e_reset(loc) |
| 90 | * |
| 91 | * Perform a soft reset of the system. Put the CPU into the |
| 92 | * same state as it would be if it had been reset, and branch |
| 93 | * to what would be the reset vector. |
| 94 | * |
| 95 | * loc: location to jump to for soft reset |
| 96 | */ |
| 97 | .align 5 |
| 98 | ENTRY(cpu_arm1020e_reset) |
| 99 | mov ip, #0 |
| 100 | mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches |
| 101 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 102 | #ifdef CONFIG_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 104 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | mrc p15, 0, ip, c1, c0, 0 @ ctrl register |
| 106 | bic ip, ip, #0x000f @ ............wcam |
| 107 | bic ip, ip, #0x1100 @ ...i...s........ |
| 108 | mcr p15, 0, ip, c1, c0, 0 @ ctrl register |
| 109 | mov pc, r0 |
| 110 | |
| 111 | /* |
| 112 | * cpu_arm1020e_do_idle() |
| 113 | */ |
| 114 | .align 5 |
| 115 | ENTRY(cpu_arm1020e_do_idle) |
| 116 | mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt |
| 117 | mov pc, lr |
| 118 | |
| 119 | /* ================================= CACHE ================================ */ |
| 120 | |
| 121 | .align 5 |
| 122 | /* |
| 123 | * flush_user_cache_all() |
| 124 | * |
| 125 | * Invalidate all cache entries in a particular address |
| 126 | * space. |
| 127 | */ |
| 128 | ENTRY(arm1020e_flush_user_cache_all) |
| 129 | /* FALLTHROUGH */ |
| 130 | /* |
| 131 | * flush_kern_cache_all() |
| 132 | * |
| 133 | * Clean and invalidate the entire cache. |
| 134 | */ |
| 135 | ENTRY(arm1020e_flush_kern_cache_all) |
| 136 | mov r2, #VM_EXEC |
| 137 | mov ip, #0 |
| 138 | __flush_whole_cache: |
| 139 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 140 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 141 | mov r1, #(CACHE_DSEGMENTS - 1) << 5 @ 16 segments |
| 142 | 1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries |
| 143 | 2: mcr p15, 0, r3, c7, c14, 2 @ clean+invalidate D index |
| 144 | subs r3, r3, #1 << 26 |
| 145 | bcs 2b @ entries 63 to 0 |
| 146 | subs r1, r1, #1 << 5 |
| 147 | bcs 1b @ segments 15 to 0 |
| 148 | #endif |
| 149 | tst r2, #VM_EXEC |
| 150 | #ifndef CONFIG_CPU_ICACHE_DISABLE |
| 151 | mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache |
| 152 | #endif |
| 153 | mcrne p15, 0, ip, c7, c10, 4 @ drain WB |
| 154 | mov pc, lr |
| 155 | |
| 156 | /* |
| 157 | * flush_user_cache_range(start, end, flags) |
| 158 | * |
| 159 | * Invalidate a range of cache entries in the specified |
| 160 | * address space. |
| 161 | * |
| 162 | * - start - start address (inclusive) |
| 163 | * - end - end address (exclusive) |
| 164 | * - flags - vm_flags for this space |
| 165 | */ |
| 166 | ENTRY(arm1020e_flush_user_cache_range) |
| 167 | mov ip, #0 |
| 168 | sub r3, r1, r0 @ calculate total size |
| 169 | cmp r3, #CACHE_DLIMIT |
| 170 | bhs __flush_whole_cache |
| 171 | |
| 172 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 173 | 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry |
| 174 | add r0, r0, #CACHE_DLINESIZE |
| 175 | cmp r0, r1 |
| 176 | blo 1b |
| 177 | #endif |
| 178 | tst r2, #VM_EXEC |
| 179 | #ifndef CONFIG_CPU_ICACHE_DISABLE |
| 180 | mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache |
| 181 | #endif |
| 182 | mcrne p15, 0, ip, c7, c10, 4 @ drain WB |
| 183 | mov pc, lr |
| 184 | |
| 185 | /* |
| 186 | * coherent_kern_range(start, end) |
| 187 | * |
| 188 | * Ensure coherency between the Icache and the Dcache in the |
| 189 | * region described by start. If you have non-snooping |
| 190 | * Harvard caches, you need to implement this function. |
| 191 | * |
| 192 | * - start - virtual start address |
| 193 | * - end - virtual end address |
| 194 | */ |
| 195 | ENTRY(arm1020e_coherent_kern_range) |
| 196 | /* FALLTHROUGH */ |
| 197 | /* |
| 198 | * coherent_user_range(start, end) |
| 199 | * |
| 200 | * Ensure coherency between the Icache and the Dcache in the |
| 201 | * region described by start. If you have non-snooping |
| 202 | * Harvard caches, you need to implement this function. |
| 203 | * |
| 204 | * - start - virtual start address |
| 205 | * - end - virtual end address |
| 206 | */ |
| 207 | ENTRY(arm1020e_coherent_user_range) |
| 208 | mov ip, #0 |
| 209 | bic r0, r0, #CACHE_DLINESIZE - 1 |
| 210 | 1: |
| 211 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 212 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
| 213 | #endif |
| 214 | #ifndef CONFIG_CPU_ICACHE_DISABLE |
| 215 | mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry |
| 216 | #endif |
| 217 | add r0, r0, #CACHE_DLINESIZE |
| 218 | cmp r0, r1 |
| 219 | blo 1b |
| 220 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 221 | mov pc, lr |
| 222 | |
| 223 | /* |
Russell King | 2c9b9c8 | 2009-11-26 12:56:21 +0000 | [diff] [blame] | 224 | * flush_kern_dcache_area(void *addr, size_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | * |
| 226 | * Ensure no D cache aliasing occurs, either with itself or |
| 227 | * the I cache |
| 228 | * |
Russell King | 2c9b9c8 | 2009-11-26 12:56:21 +0000 | [diff] [blame] | 229 | * - addr - kernel address |
| 230 | * - size - region size |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | */ |
Russell King | 2c9b9c8 | 2009-11-26 12:56:21 +0000 | [diff] [blame] | 232 | ENTRY(arm1020e_flush_kern_dcache_area) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | mov ip, #0 |
| 234 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
Russell King | 2c9b9c8 | 2009-11-26 12:56:21 +0000 | [diff] [blame] | 235 | add r1, r0, r1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry |
| 237 | add r0, r0, #CACHE_DLINESIZE |
| 238 | cmp r0, r1 |
| 239 | blo 1b |
| 240 | #endif |
| 241 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 242 | mov pc, lr |
| 243 | |
| 244 | /* |
| 245 | * dma_inv_range(start, end) |
| 246 | * |
| 247 | * Invalidate (discard) the specified virtual address range. |
| 248 | * May not write back any entries. If 'start' or 'end' |
| 249 | * are not cache line aligned, those lines must be written |
| 250 | * back. |
| 251 | * |
| 252 | * - start - virtual start address |
| 253 | * - end - virtual end address |
| 254 | * |
| 255 | * (same as v4wb) |
| 256 | */ |
Russell King | 702b94b | 2009-11-26 16:24:19 +0000 | [diff] [blame] | 257 | arm1020e_dma_inv_range: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | mov ip, #0 |
| 259 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 260 | tst r0, #CACHE_DLINESIZE - 1 |
| 261 | bic r0, r0, #CACHE_DLINESIZE - 1 |
| 262 | mcrne p15, 0, r0, c7, c10, 1 @ clean D entry |
| 263 | tst r1, #CACHE_DLINESIZE - 1 |
| 264 | mcrne p15, 0, r1, c7, c10, 1 @ clean D entry |
| 265 | 1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry |
| 266 | add r0, r0, #CACHE_DLINESIZE |
| 267 | cmp r0, r1 |
| 268 | blo 1b |
| 269 | #endif |
| 270 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 271 | mov pc, lr |
| 272 | |
| 273 | /* |
| 274 | * dma_clean_range(start, end) |
| 275 | * |
| 276 | * Clean the specified virtual address range. |
| 277 | * |
| 278 | * - start - virtual start address |
| 279 | * - end - virtual end address |
| 280 | * |
| 281 | * (same as v4wb) |
| 282 | */ |
Russell King | 702b94b | 2009-11-26 16:24:19 +0000 | [diff] [blame] | 283 | arm1020e_dma_clean_range: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | mov ip, #0 |
| 285 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 286 | bic r0, r0, #CACHE_DLINESIZE - 1 |
| 287 | 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
| 288 | add r0, r0, #CACHE_DLINESIZE |
| 289 | cmp r0, r1 |
| 290 | blo 1b |
| 291 | #endif |
| 292 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 293 | mov pc, lr |
| 294 | |
| 295 | /* |
| 296 | * dma_flush_range(start, end) |
| 297 | * |
| 298 | * Clean and invalidate the specified virtual address range. |
| 299 | * |
| 300 | * - start - virtual start address |
| 301 | * - end - virtual end address |
| 302 | */ |
| 303 | ENTRY(arm1020e_dma_flush_range) |
| 304 | mov ip, #0 |
| 305 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 306 | bic r0, r0, #CACHE_DLINESIZE - 1 |
| 307 | 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry |
| 308 | add r0, r0, #CACHE_DLINESIZE |
| 309 | cmp r0, r1 |
| 310 | blo 1b |
| 311 | #endif |
| 312 | mcr p15, 0, ip, c7, c10, 4 @ drain WB |
| 313 | mov pc, lr |
| 314 | |
Russell King | a9c9147 | 2009-11-26 16:19:58 +0000 | [diff] [blame] | 315 | /* |
| 316 | * dma_map_area(start, size, dir) |
| 317 | * - start - kernel virtual start address |
| 318 | * - size - size of region |
| 319 | * - dir - DMA direction |
| 320 | */ |
| 321 | ENTRY(arm1020e_dma_map_area) |
| 322 | add r1, r1, r0 |
| 323 | cmp r2, #DMA_TO_DEVICE |
| 324 | beq arm1020e_dma_clean_range |
| 325 | bcs arm1020e_dma_inv_range |
| 326 | b arm1020e_dma_flush_range |
| 327 | ENDPROC(arm1020e_dma_map_area) |
| 328 | |
| 329 | /* |
| 330 | * dma_unmap_area(start, size, dir) |
| 331 | * - start - kernel virtual start address |
| 332 | * - size - size of region |
| 333 | * - dir - DMA direction |
| 334 | */ |
| 335 | ENTRY(arm1020e_dma_unmap_area) |
| 336 | mov pc, lr |
| 337 | ENDPROC(arm1020e_dma_unmap_area) |
| 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | ENTRY(arm1020e_cache_fns) |
| 340 | .long arm1020e_flush_kern_cache_all |
| 341 | .long arm1020e_flush_user_cache_all |
| 342 | .long arm1020e_flush_user_cache_range |
| 343 | .long arm1020e_coherent_kern_range |
| 344 | .long arm1020e_coherent_user_range |
Russell King | 2c9b9c8 | 2009-11-26 12:56:21 +0000 | [diff] [blame] | 345 | .long arm1020e_flush_kern_dcache_area |
Russell King | a9c9147 | 2009-11-26 16:19:58 +0000 | [diff] [blame] | 346 | .long arm1020e_dma_map_area |
| 347 | .long arm1020e_dma_unmap_area |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | .long arm1020e_dma_flush_range |
| 349 | |
| 350 | .align 5 |
| 351 | ENTRY(cpu_arm1020e_dcache_clean_area) |
| 352 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 353 | mov ip, #0 |
| 354 | 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
| 355 | add r0, r0, #CACHE_DLINESIZE |
| 356 | subs r1, r1, #CACHE_DLINESIZE |
| 357 | bhi 1b |
| 358 | #endif |
| 359 | mov pc, lr |
| 360 | |
| 361 | /* =============================== PageTable ============================== */ |
| 362 | |
| 363 | /* |
| 364 | * cpu_arm1020e_switch_mm(pgd) |
| 365 | * |
| 366 | * Set the translation base pointer to be as described by pgd. |
| 367 | * |
| 368 | * pgd: new page tables |
| 369 | */ |
| 370 | .align 5 |
| 371 | ENTRY(cpu_arm1020e_switch_mm) |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 372 | #ifdef CONFIG_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 374 | mcr p15, 0, r3, c7, c10, 4 |
| 375 | mov r1, #0xF @ 16 segments |
| 376 | 1: mov r3, #0x3F @ 64 entries |
| 377 | 2: mov ip, r3, LSL #26 @ shift up entry |
| 378 | orr ip, ip, r1, LSL #5 @ shift in/up index |
| 379 | mcr p15, 0, ip, c7, c14, 2 @ Clean & Inval DCache entry |
| 380 | mov ip, #0 |
| 381 | subs r3, r3, #1 |
| 382 | cmp r3, #0 |
| 383 | bge 2b @ entries 3F to 0 |
| 384 | subs r1, r1, #1 |
| 385 | cmp r1, #0 |
| 386 | bge 1b @ segments 15 to 0 |
| 387 | |
| 388 | #endif |
| 389 | mov r1, #0 |
| 390 | #ifndef CONFIG_CPU_ICACHE_DISABLE |
| 391 | mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache |
| 392 | #endif |
| 393 | mcr p15, 0, r1, c7, c10, 4 @ drain WB |
| 394 | mcr p15, 0, r0, c2, c0, 0 @ load page table pointer |
| 395 | mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 396 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | mov pc, lr |
| 398 | |
| 399 | /* |
| 400 | * cpu_arm1020e_set_pte(ptep, pte) |
| 401 | * |
| 402 | * Set a PTE and flush it out |
| 403 | */ |
| 404 | .align 5 |
Russell King | ad1ae2f | 2006-12-13 14:34:43 +0000 | [diff] [blame] | 405 | ENTRY(cpu_arm1020e_set_pte_ext) |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 406 | #ifdef CONFIG_MMU |
Russell King | da09165 | 2008-09-06 17:19:08 +0100 | [diff] [blame] | 407 | armv3_set_pte_ext |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | mov r0, r0 |
| 409 | #ifndef CONFIG_CPU_DCACHE_DISABLE |
| 410 | mcr p15, 0, r0, c7, c10, 1 @ clean D entry |
| 411 | #endif |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 412 | #endif /* CONFIG_MMU */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | mov pc, lr |
| 414 | |
| 415 | __INIT |
| 416 | |
| 417 | .type __arm1020e_setup, #function |
| 418 | __arm1020e_setup: |
| 419 | mov r0, #0 |
| 420 | mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 |
| 421 | mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 422 | #ifdef CONFIG_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 |
Hyok S. Choi | d090ddd | 2006-06-28 14:10:01 +0100 | [diff] [blame] | 424 | #endif |
Russell King | 22b19086 | 2006-06-29 15:09:57 +0100 | [diff] [blame] | 425 | adr r5, arm1020e_crval |
| 426 | ldmia r5, {r5, r6} |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | mrc p15, 0, r0, c1, c0 @ get control register v4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | bic r0, r0, r5 |
Russell King | 22b19086 | 2006-06-29 15:09:57 +0100 | [diff] [blame] | 429 | orr r0, r0, r6 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | #ifdef CONFIG_CPU_CACHE_ROUND_ROBIN |
| 431 | orr r0, r0, #0x4000 @ .R.. .... .... .... |
| 432 | #endif |
| 433 | mov pc, lr |
| 434 | .size __arm1020e_setup, . - __arm1020e_setup |
| 435 | |
| 436 | /* |
| 437 | * R |
| 438 | * .RVI ZFRS BLDP WCAM |
Catalin Marinas | abaf48a | 2005-06-30 17:04:14 +0100 | [diff] [blame] | 439 | * .011 1001 ..11 0101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | */ |
Russell King | 22b19086 | 2006-06-29 15:09:57 +0100 | [diff] [blame] | 441 | .type arm1020e_crval, #object |
| 442 | arm1020e_crval: |
| 443 | crval clear=0x00007f3f, mmuset=0x00003935, ucset=0x00001930 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
| 445 | __INITDATA |
| 446 | |
| 447 | /* |
| 448 | * Purpose : Function pointers used to access above functions - all calls |
| 449 | * come through these |
| 450 | */ |
| 451 | .type arm1020e_processor_functions, #object |
| 452 | arm1020e_processor_functions: |
| 453 | .word v4t_early_abort |
Kirill A. Shutemov | 4fb2847 | 2009-09-25 13:39:47 +0100 | [diff] [blame] | 454 | .word legacy_pabort |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | .word cpu_arm1020e_proc_init |
| 456 | .word cpu_arm1020e_proc_fin |
| 457 | .word cpu_arm1020e_reset |
| 458 | .word cpu_arm1020e_do_idle |
| 459 | .word cpu_arm1020e_dcache_clean_area |
| 460 | .word cpu_arm1020e_switch_mm |
Russell King | ad1ae2f | 2006-12-13 14:34:43 +0000 | [diff] [blame] | 461 | .word cpu_arm1020e_set_pte_ext |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | .size arm1020e_processor_functions, . - arm1020e_processor_functions |
| 463 | |
| 464 | .section ".rodata" |
| 465 | |
| 466 | .type cpu_arch_name, #object |
| 467 | cpu_arch_name: |
| 468 | .asciz "armv5te" |
| 469 | .size cpu_arch_name, . - cpu_arch_name |
| 470 | |
| 471 | .type cpu_elf_name, #object |
| 472 | cpu_elf_name: |
| 473 | .asciz "v5" |
| 474 | .size cpu_elf_name, . - cpu_elf_name |
| 475 | |
| 476 | .type cpu_arm1020e_name, #object |
| 477 | cpu_arm1020e_name: |
Russell King | 264edb3 | 2006-06-29 15:03:09 +0100 | [diff] [blame] | 478 | .asciz "ARM1020E" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | .size cpu_arm1020e_name, . - cpu_arm1020e_name |
| 480 | |
| 481 | .align |
| 482 | |
Ben Dooks | 02b7dd1 | 2005-09-20 16:35:03 +0100 | [diff] [blame] | 483 | .section ".proc.info.init", #alloc, #execinstr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
| 485 | .type __arm1020e_proc_info,#object |
| 486 | __arm1020e_proc_info: |
| 487 | .long 0x4105a200 @ ARM 1020TE (Architecture v5TE) |
| 488 | .long 0xff0ffff0 |
| 489 | .long PMD_TYPE_SECT | \ |
| 490 | PMD_BIT4 | \ |
| 491 | PMD_SECT_AP_WRITE | \ |
| 492 | PMD_SECT_AP_READ |
Russell King | 8799ee9 | 2006-06-29 18:24:21 +0100 | [diff] [blame] | 493 | .long PMD_TYPE_SECT | \ |
| 494 | PMD_BIT4 | \ |
| 495 | PMD_SECT_AP_WRITE | \ |
| 496 | PMD_SECT_AP_READ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | b __arm1020e_setup |
| 498 | .long cpu_arch_name |
| 499 | .long cpu_elf_name |
| 500 | .long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB | HWCAP_EDSP |
| 501 | .long cpu_arm1020e_name |
| 502 | .long arm1020e_processor_functions |
| 503 | .long v4wbi_tlb_fns |
| 504 | .long v4wb_user_fns |
| 505 | .long arm1020e_cache_fns |
| 506 | .size __arm1020e_proc_info, . - __arm1020e_proc_info |