LXR linux/arch/hexagon/kernel/vm_init

   1/*
   2 * Initial page table for Linux kernel under Hexagon VM,
   3 *
   4 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 and
   8 * only version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18 * 02110-1301, USA.
  19 */
  20
  21/*
  22 * These tables are pre-computed and linked into kernel.
  23 */
  24
  25#include <asm/vm_mmu.h>
  26/*  #include <asm/iomap.h>  */
  27
  28/*
  29 * Start with mapping PA=0 to both VA=0x0 and VA=0xc000000 as 16MB large pages.
  30 * No user mode access, RWX, write-back cache.  The entry needs
  31 * to be replicated for all 4 virtual segments mapping to the page.
  32 */
  33
  34/* "Big Kernel Page"  */
  35#define BKP(pa) (((pa) & __HVM_PTE_PGMASK_4MB)          \
  36                | __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X       \
  37                | __HEXAGON_C_WB_L2 << 6                        \
  38                | __HVM_PDE_S_16MB)
  39
  40/*  No cache version  */
  41
  42#define BKPG_IO(pa) (((pa) & __HVM_PTE_PGMASK_16MB) \
  43                        | __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
  44                        | __HVM_PDE_S_16MB | __HEXAGON_C_DEV << 6 )
  45
  46#define FOURK_IO(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
  47                        | __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
  48                        | __HEXAGON_C_DEV << 6 )
  49
  50#define L2_PTR(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
  51                        | __HVM_PDE_S_4KB  )
  52
  53#define X __HVM_PDE_S_INVALID
  54
  55        .p2align 12
  56        .globl swapper_pg_dir
  57        .globl _K_init_segtable
  58swapper_pg_dir:
  59/* VA 0x00000000 */
  60        .word X,X,X,X
  61        .word X,X,X,X
  62        .word X,X,X,X
  63        .word X,X,X,X
  64        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  65        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  66        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  67        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  68        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  69        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  70        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  71        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  72/* VA 0x40000000 */
  73        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  74        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  75        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  76        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  77        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  78        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  79        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  80        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  81/* VA 0x80000000 */
  82        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  83        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  84        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  85        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  86        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
  87/*0xa8*/.word X,X,X,X
  88#ifdef CONFIG_COMET_EARLY_UART_DEBUG
  89UART_PTE_ENTRY:
  90/*0xa9*/.word BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000)
  91#else
  92/*0xa9*/.word X,X,X,X
  93#endif
  94/*0xaa*/.word X,X,X,X
  95/*0xab*/.word X,X,X,X
  96/*0xac*/.word X,X,X,X
  97/*0xad*/.word X,X,X,X
  98/*0xae*/.word X,X,X,X
  99/*0xaf*/.word X,X,X,X
 100/*0xb0*/.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
 101        .word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
 102_K_init_segtable:
 103/* VA 0xC0000000 */
 104        .word BKP(0x00000000), BKP(0x00400000), BKP(0x00800000), BKP(0x00c00000)
 105        .word BKP(0x01000000), BKP(0x01400000), BKP(0x01800000), BKP(0x01c00000)
 106        .word BKP(0x02000000), BKP(0x02400000), BKP(0x02800000), BKP(0x02c00000)
 107        .word BKP(0x03000000), BKP(0x03400000), BKP(0x03800000), BKP(0x03c00000)
 108        .word BKP(0x04000000), BKP(0x04400000), BKP(0x04800000), BKP(0x04c00000)
 109        .word BKP(0x05000000), BKP(0x05400000), BKP(0x05800000), BKP(0x05c00000)
 110        .word BKP(0x06000000), BKP(0x06400000), BKP(0x06800000), BKP(0x06c00000)
 111        .word BKP(0x07000000), BKP(0x07400000), BKP(0x07800000), BKP(0x07c00000)
 112
 113        .word BKP(0x08000000), BKP(0x08400000), BKP(0x08800000), BKP(0x08c00000)
 114        .word BKP(0x09000000), BKP(0x09400000), BKP(0x09800000), BKP(0x09c00000)
 115        .word BKP(0x0a000000), BKP(0x0a400000), BKP(0x0a800000), BKP(0x0ac00000)
 116        .word BKP(0x0b000000), BKP(0x0b400000), BKP(0x0b800000), BKP(0x0bc00000)
 117        .word BKP(0x0c000000), BKP(0x0c400000), BKP(0x0c800000), BKP(0x0cc00000)
 118        .word BKP(0x0d000000), BKP(0x0d400000), BKP(0x0d800000), BKP(0x0dc00000)
 119        .word BKP(0x0e000000), BKP(0x0e400000), BKP(0x0e800000), BKP(0x0ec00000)
 120        .word BKP(0x0f000000), BKP(0x0f400000), BKP(0x0f800000), BKP(0x0fc00000)
 121
 122        .word BKP(0x10000000), BKP(0x10400000), BKP(0x10800000), BKP(0x10c00000)
 123        .word BKP(0x11000000), BKP(0x11400000), BKP(0x11800000), BKP(0x11c00000)
 124        .word BKP(0x12000000), BKP(0x12400000), BKP(0x12800000), BKP(0x12c00000)
 125        .word BKP(0x13000000), BKP(0x13400000), BKP(0x13800000), BKP(0x13c00000)
 126        .word BKP(0x14000000), BKP(0x14400000), BKP(0x14800000), BKP(0x14c00000)
 127        .word BKP(0x15000000), BKP(0x15400000), BKP(0x15800000), BKP(0x15c00000)
 128        .word BKP(0x16000000), BKP(0x16400000), BKP(0x16800000), BKP(0x16c00000)
 129        .word BKP(0x17000000), BKP(0x17400000), BKP(0x17800000), BKP(0x17c00000)
 130
 131        .word BKP(0x18000000), BKP(0x18400000), BKP(0x18800000), BKP(0x18c00000)
 132        .word BKP(0x19000000), BKP(0x19400000), BKP(0x19800000), BKP(0x19c00000)
 133        .word BKP(0x1a000000), BKP(0x1a400000), BKP(0x1a800000), BKP(0x1ac00000)
 134        .word BKP(0x1b000000), BKP(0x1b400000), BKP(0x1b800000), BKP(0x1bc00000)
 135        .word BKP(0x1c000000), BKP(0x1c400000), BKP(0x1c800000), BKP(0x1cc00000)
 136        .word BKP(0x1d000000), BKP(0x1d400000), BKP(0x1d800000), BKP(0x1dc00000)
 137        .word BKP(0x1e000000), BKP(0x1e400000), BKP(0x1e800000), BKP(0x1ec00000)
 138        .word BKP(0x1f000000), BKP(0x1f400000), BKP(0x1f800000), BKP(0x1fc00000)
 139
 140        .word BKP(0x20000000), BKP(0x20400000), BKP(0x20800000), BKP(0x20c00000)
 141        .word BKP(0x21000000), BKP(0x21400000), BKP(0x21800000), BKP(0x21c00000)
 142        .word BKP(0x22000000), BKP(0x22400000), BKP(0x22800000), BKP(0x22c00000)
 143        .word BKP(0x23000000), BKP(0x23400000), BKP(0x23800000), BKP(0x23c00000)
 144        .word BKP(0x24000000), BKP(0x24400000), BKP(0x24800000), BKP(0x24c00000)
 145        .word BKP(0x25000000), BKP(0x25400000), BKP(0x25800000), BKP(0x25c00000)
 146        .word BKP(0x26000000), BKP(0x26400000), BKP(0x26800000), BKP(0x26c00000)
 147        .word BKP(0x27000000), BKP(0x27400000), BKP(0x27800000), BKP(0x27c00000)
 148
 149        .word BKP(0x28000000), BKP(0x28400000), BKP(0x28800000), BKP(0x28c00000)
 150        .word BKP(0x29000000), BKP(0x29400000), BKP(0x29800000), BKP(0x29c00000)
 151        .word BKP(0x2a000000), BKP(0x2a400000), BKP(0x2a800000), BKP(0x2ac00000)
 152        .word BKP(0x2b000000), BKP(0x2b400000), BKP(0x2b800000), BKP(0x2bc00000)
 153        .word BKP(0x2c000000), BKP(0x2c400000), BKP(0x2c800000), BKP(0x2cc00000)
 154        .word BKP(0x2d000000), BKP(0x2d400000), BKP(0x2d800000), BKP(0x2dc00000)
 155        .word BKP(0x2e000000), BKP(0x2e400000), BKP(0x2e800000), BKP(0x2ec00000)
 156        .word BKP(0x2f000000), BKP(0x2f400000), BKP(0x2f800000), BKP(0x2fc00000)
 157
 158        .word BKP(0x30000000), BKP(0x30400000), BKP(0x30800000), BKP(0x30c00000)
 159        .word BKP(0x31000000), BKP(0x31400000), BKP(0x31800000), BKP(0x31c00000)
 160        .word BKP(0x32000000), BKP(0x32400000), BKP(0x32800000), BKP(0x32c00000)
 161        .word BKP(0x33000000), BKP(0x33400000), BKP(0x33800000), BKP(0x33c00000)
 162        .word BKP(0x34000000), BKP(0x34400000), BKP(0x34800000), BKP(0x34c00000)
 163        .word BKP(0x35000000), BKP(0x35400000), BKP(0x35800000), BKP(0x35c00000)
 164        .word BKP(0x36000000), BKP(0x36400000), BKP(0x36800000), BKP(0x36c00000)
 165        .word BKP(0x37000000), BKP(0x37400000), BKP(0x37800000), BKP(0x37c00000)
 166
 167        .word BKP(0x38000000), BKP(0x38400000), BKP(0x38800000), BKP(0x38c00000)
 168        .word BKP(0x39000000), BKP(0x39400000), BKP(0x39800000), BKP(0x39c00000)
 169        .word BKP(0x3a000000), BKP(0x3a400000), BKP(0x3a800000), BKP(0x3ac00000)
 170        .word BKP(0x3b000000), BKP(0x3b400000), BKP(0x3b800000), BKP(0x3bc00000)
 171        .word BKP(0x3c000000), BKP(0x3c400000), BKP(0x3c800000), BKP(0x3cc00000)
 172        .word BKP(0x3d000000), BKP(0x3d400000), BKP(0x3d800000), BKP(0x3dc00000)
 173_K_io_map:
 174        .word X,X,X,X /* 0x3e000000 - device IO early remap */
 175        .word X,X,X,X /* 0x3f000000 - hypervisor space*/
 176
 177#if 0
 178/*
 179 * This is in here as an example for devices which need to be mapped really
 180 * early.
 181 */
 182        .p2align 12
 183        .globl _K_io_kmap
 184        .globl _K_init_devicetable
 185_K_init_devicetable:  /*  Should be 4MB worth of entries  */
 186        .word FOURK_IO(MSM_GPIO1_PHYS),FOURK_IO(MSM_GPIO2_PHYS),FOURK_IO(MSM_SIRC_PHYS),X
 187        .word FOURK_IO(TLMM_GPIO1_PHYS),X,X,X
 188        .word X,X,X,X
 189        .word X,X,X,X
 190        .word X,X,X,X
 191        .word X,X,X,X
 192        .word X,X,X,X
 193        .word X,X,X,X
 194        .word X,X,X,X
 195        .word X,X,X,X
 196        .word X,X,X,X
 197        .word X,X,X,X
 198        .word X,X,X,X
 199        .word X,X,X,X
 200        .word X,X,X,X
 201        .word X,X,X,X
 202        .word X,X,X,X
 203        .word X,X,X,X
 204        .word X,X,X,X
 205        .word X,X,X,X
 206        .word X,X,X,X
 207        .word X,X,X,X
 208        .word X,X,X,X
 209        .word X,X,X,X
 210        .word X,X,X,X
 211        .word X,X,X,X
 212        .word X,X,X,X
 213        .word X,X,X,X
 214        .word X,X,X,X
 215        .word X,X,X,X
 216        .word X,X,X,X
 217        .word X,X,X,X
 218        .word X,X,X,X
 219        .word X,X,X,X
 220        .word X,X,X,X
 221        .word X,X,X,X
 222        .word X,X,X,X
 223        .word X,X,X,X
 224        .word X,X,X,X
 225        .word X,X,X,X
 226        .word X,X,X,X
 227        .word X,X,X,X
 228        .word X,X,X,X
 229        .word X,X,X,X
 230        .word X,X,X,X
 231        .word X,X,X,X
 232        .word X,X,X,X
 233        .word X,X,X,X
 234        .word X,X,X,X
 235        .word X,X,X,X
 236        .word X,X,X,X
 237        .word X,X,X,X
 238        .word X,X,X,X
 239        .word X,X,X,X
 240        .word X,X,X,X
 241        .word X,X,X,X
 242        .word X,X,X,X
 243        .word X,X,X,X
 244        .word X,X,X,X
 245        .word X,X,X,X
 246        .word X,X,X,X
 247        .word X,X,X,X
 248        .word X,X,X,X
 249        .word X,X,X,X
 250        .word X,X,X,X
 251        .word X,X,X,X
 252        .word X,X,X,X
 253        .word X,X,X,X
 254        .word X,X,X,X
 255        .word X,X,X,X
 256        .word X,X,X,X
 257        .word X,X,X,X
 258        .word X,X,X,X
 259        .word X,X,X,X
 260        .word X,X,X,X
 261        .word X,X,X,X
 262        .word X,X,X,X
 263        .word X,X,X,X
 264        .word X,X,X,X
 265        .word X,X,X,X
 266        .word X,X,X,X
 267        .word X,X,X,X
 268        .word X,X,X,X
 269        .word X,X,X,X
 270        .word X,X,X,X
 271        .word X,X,X,X
 272        .word X,X,X,X
 273        .word X,X,X,X
 274        .word X,X,X,X
 275        .word X,X,X,X
 276        .word X,X,X,X
 277        .word X,X,X,X
 278        .word X,X,X,X
 279        .word X,X,X,X
 280        .word X,X,X,X
 281        .word X,X,X,X
 282        .word X,X,X,X
 283        .word X,X,X,X
 284        .word X,X,X,X
 285        .word X,X,X,X
 286        .word X,X,X,X
 287        .word X,X,X,X
 288        .word X,X,X,X
 289        .word X,X,X,X
 290        .word X,X,X,X
 291        .word X,X,X,X
 292        .word X,X,X,X
 293        .word X,X,X,X
 294        .word X,X,X,X
 295        .word X,X,X,X
 296        .word X,X,X,X
 297        .word X,X,X,X
 298        .word X,X,X,X
 299        .word X,X,X,X
 300        .word X,X,X,X
 301        .word X,X,X,X
 302        .word X,X,X,X
 303        .word X,X,X,X
 304        .word X,X,X,X
 305        .word X,X,X,X
 306        .word X,X,X,X
 307        .word X,X,X,X
 308        .word X,X,X,X
 309        .word X,X,X,X
 310        .word X,X,X,X
 311        .word X,X,X,X
 312        .word X,X,X,X
 313        .word X,X,X,X
 314        .word X,X,X,X
 315        .word X,X,X,X
 316        .word X,X,X,X
 317        .word X,X,X,X
 318        .word X,X,X,X
 319        .word X,X,X,X
 320        .word X,X,X,X
 321        .word X,X,X,X
 322        .word X,X,X,X
 323        .word X,X,X,X
 324        .word X,X,X,X
 325        .word X,X,X,X
 326        .word X,X,X,X
 327        .word X,X,X,X
 328        .word X,X,X,X
 329        .word X,X,X,X
 330        .word X,X,X,X
 331        .word X,X,X,X
 332        .word X,X,X,X
 333        .word X,X,X,X
 334        .word X,X,X,X
 335        .word X,X,X,X
 336        .word X,X,X,X
 337        .word X,X,X,X
 338        .word X,X,X,X
 339        .word X,X,X,X
 340        .word X,X,X,X
 341        .word X,X,X,X
 342        .word X,X,X,X
 343        .word X,X,X,X
 344        .word X,X,X,X
 345        .word X,X,X,X
 346        .word X,X,X,X
 347        .word X,X,X,X
 348        .word X,X,X,X
 349        .word X,X,X,X
 350        .word X,X,X,X
 351        .word X,X,X,X
 352        .word X,X,X,X
 353        .word X,X,X,X
 354        .word X,X,X,X
 355        .word X,X,X,X
 356        .word X,X,X,X
 357        .word X,X,X,X
 358        .word X,X,X,X
 359        .word X,X,X,X
 360        .word X,X,X,X
 361        .word X,X,X,X
 362        .word X,X,X,X
 363        .word X,X,X,X
 364        .word X,X,X,X
 365        .word X,X,X,X
 366        .word X,X,X,X
 367        .word X,X,X,X
 368        .word X,X,X,X
 369        .word X,X,X,X
 370        .word X,X,X,X
 371        .word X,X,X,X
 372        .word X,X,X,X
 373        .word X,X,X,X
 374        .word X,X,X,X
 375        .word X,X,X,X
 376        .word X,X,X,X
 377        .word X,X,X,X
 378        .word X,X,X,X
 379        .word X,X,X,X
 380        .word X,X,X,X
 381        .word X,X,X,X
 382        .word X,X,X,X
 383        .word X,X,X,X
 384        .word X,X,X,X
 385        .word X,X,X,X
 386        .word X,X,X,X
 387        .word X,X,X,X
 388        .word X,X,X,X
 389        .word X,X,X,X
 390        .word X,X,X,X
 391        .word X,X,X,X
 392        .word X,X,X,X
 393        .word X,X,X,X
 394        .word X,X,X,X
 395        .word X,X,X,X
 396        .word X,X,X,X
 397        .word X,X,X,X
 398        .word X,X,X,X
 399        .word X,X,X,X
 400        .word X,X,X,X
 401        .word X,X,X,X
 402        .word X,X,X,X
 403        .word X,X,X,X
 404        .word X,X,X,X
 405        .word X,X,X,X
 406        .word X,X,X,X
 407        .word X,X,X,X
 408        .word X,X,X,X
 409        .word X,X,X,X
 410        .word X,X,X,X
 411        .word X,X,X,X
 412        .word X,X,X,X
 413        .word X,X,X,X
 414        .word X,X,X,X
 415        .word X,X,X,X
 416        .word X,X,X,X
 417        .word X,X,X,X
 418        .word X,X,X,X
 419        .word X,X,X,X
 420        .word X,X,X,X
 421        .word X,X,X,X
 422        .word X,X,X,X
 423        .word X,X,X,X
 424        .word X,X,X,X
 425        .word X,X,X,X
 426        .word X,X,X,X
 427        .word X,X,X,X
 428        .word X,X,X,X
 429        .word X,X,X,X
 430        .word X,X,X,X
 431        .word X,X,X,X
 432        .word X,X,X,X
 433        .word X,X,X,X
 434        .word X,X,X,X
 435        .word X,X,X,X
 436        .word X,X,X,X
 437        .word X,X,X,X
 438        .word X,X,X,X
 439        .word X,X,X,X
 440        .word X,X,X,X
 441        .word X,X,X,X
 442#endif
 443