libopenbios/ofmem_common.c

   1 /*
   2  *      <ofmem_sparc64.c>
   3  *
   4  *      OF Memory manager
   5  *
   6  *   Copyright (C) 1999-2004 Samuel Rydh (samuel@ibrium.se)
   7  *   Copyright (C) 2004 Stefan Reinauer
   8  *
   9  *   This program is free software; you can redistribute it and/or
  10  *   modify it under the terms of the GNU General Public License
  11  *   as published by the Free Software Foundation
  12  *
  13  */
  14
  15 #include "config.h"
  16 #include "libopenbios/bindings.h"
  17 #include "libopenbios/ofmem.h"
  18
  19 /*
  20  * define OFMEM_FILL_RANGE to claim any unclaimed virtual and
  21  * physical memory in the range for ofmem_map
  22  *
  23  * TODO: remove this macro and wrapped code if not needed by implementations
  24  */
  25 //#define OFMEM_FILL_RANGE
  26
  27
  28 static inline size_t ALIGN_SIZE(size_t x, size_t a)
  29 {
  30     return (x + a - 1) & ~(a-1);
  31 }
  32
  33 static ucell get_ram_size( void )
  34 {
  35         ofmem_t *ofmem = ofmem_arch_get_private();
  36         return ofmem->ramsize;
  37 }
  38
  39 /************************************************************************/
  40 /* debug                                                                */
  41 /************************************************************************/
  42
  43 #if 0
  44 static void
  45 print_range( range_t *r, char *str )
  46 {
  47         printk("--- Range %s ---\n", str );
  48         for( ; r; r=r->next )
  49                 printk("%08lx - %08lx\n", r->start, r->start + r->size -1 );
  50         printk("\n");
  51 }
  52
  53 static void
  54 print_phys_range()
  55 {
  56         print_range( ofmem.phys_range, "phys" );
  57 }
  58
  59 static void
  60 print_virt_range()
  61 {
  62         print_range( ofmem.virt_range, "virt" );
  63 }
  64
  65 static void
  66 print_trans( void )
  67 {
  68         translation_t *t = ofmem.trans;
  69
  70         printk("--- Translations ---\n");
  71         for( ; t; t=t->next )
  72                 printk("%08lx -> %08lx [size %lx]\n", t->virt, t->phys, t->size );
  73         printk("\n");
  74 }
  75 #endif
  76
  77 /************************************************************************/
  78 /* OF private allocations                                               */
  79 /************************************************************************/
  80
  81 void* ofmem_malloc( size_t size )
  82 {
  83         ofmem_t *ofmem = ofmem_arch_get_private();
  84         alloc_desc_t *d, **pp;
  85         char *ret;
  86         ucell top;
  87
  88         if( !size )
  89                 return NULL;
  90
  91         if( !ofmem->next_malloc )
  92                 ofmem->next_malloc = (char*)ofmem_arch_get_malloc_base();
  93
  94         size = ALIGN_SIZE(size + sizeof(alloc_desc_t), CONFIG_OFMEM_MALLOC_ALIGN);
  95
  96         /* look in the freelist */
  97         for( pp=&ofmem->mfree; *pp && (**pp).size < size; pp = &(**pp).next ) {
  98         }
  99
 100         /* waste at most 4K by taking an entry from the freelist */
 101         if( *pp && (**pp).size < size + 0x1000 ) {
 102                 ret = (char*)*pp + sizeof(alloc_desc_t);
 103                 memset( ret, 0, (**pp).size - sizeof(alloc_desc_t) );
 104                 *pp = (**pp).next;
 105                 return ret;
 106         }
 107
 108         top = ofmem_arch_get_heap_top();
 109
 110         if( (ucell)ofmem->next_malloc + size > top ) {
 111                 printk("out of malloc memory (%x)!\n", size );
 112                 return NULL;
 113         }
 114
 115         d = (alloc_desc_t*) ofmem->next_malloc;
 116         ofmem->next_malloc += size;
 117
 118         d->next = NULL;
 119         d->size = size;
 120
 121         ret = (char*)d + sizeof(alloc_desc_t);
 122         memset( ret, 0, size - sizeof(alloc_desc_t) );
 123
 124         return ret;
 125 }
 126
 127 void ofmem_free( void *ptr )
 128 {
 129         ofmem_t *ofmem = ofmem_arch_get_private();
 130         alloc_desc_t **pp, *d;
 131
 132         /* it is legal to free NULL pointers (size zero allocations) */
 133         if( !ptr )
 134                 return;
 135
 136         d = (alloc_desc_t*)((char *)ptr - sizeof(alloc_desc_t));
 137         d->next = ofmem->mfree;
 138
 139         /* insert in the (sorted) freelist */
 140         for( pp=&ofmem->mfree; *pp && (**pp).size < d->size ; pp = &(**pp).next ) {
 141         }
 142
 143         d->next = *pp;
 144         *pp = d;
 145 }
 146
 147 void* ofmem_realloc( void *ptr, size_t size )
 148 {
 149         alloc_desc_t *d = (alloc_desc_t*)((char *)ptr - sizeof(alloc_desc_t));
 150         char *p;
 151
 152         if( !ptr )
 153                 return malloc( size );
 154         if( !size ) {
 155                 free( ptr );
 156                 return NULL;
 157         }
 158         p = malloc( size );
 159         memcpy( p, ptr, MIN(d->size - sizeof(alloc_desc_t),size) );
 160         free( ptr );
 161         return p;
 162 }
 163
 164
 165 /************************************************************************/
 166 /* "translations" and "available" property tracking                     */
 167 /************************************************************************/
 168
 169 static phandle_t s_phandle_memory = 0;
 170 static phandle_t s_phandle_mmu = 0;
 171
 172 static void ofmem_update_mmu_translations( void )
 173 {
 174         ofmem_t *ofmem = ofmem_arch_get_private();
 175         translation_t *t;
 176         int ncells;
 177         ucell *props;
 178
 179         if (s_phandle_mmu == 0)
 180                 return;
 181
 182         for( t = ofmem->trans, ncells = 0; t ; t=t->next, ncells++ ) {
 183         }
 184
 185         props = malloc(ncells * sizeof(ucell) * ofmem_arch_get_translation_entry_size());
 186
 187         if (props == NULL)
 188                 return;
 189
 190         /* Call architecture-specific routines to generate translation entries */
 191         for( t = ofmem->trans, ncells = 0 ; t ; t=t->next ) {
 192                 ofmem_arch_create_translation_entry(&props[ncells], t);
 193                 ncells += ofmem_arch_get_translation_entry_size();
 194         }
 195
 196         set_property(s_phandle_mmu, "translations",
 197                         (char*)props, ncells * sizeof(props[0]));
 198
 199         free(props);
 200 }
 201
 202 static void ofmem_update_memory_available( phandle_t ph, range_t *range,
 203                 u64 top_address )
 204 {
 205         range_t *r;
 206         int ncells;
 207         ucell *props;
 208
 209         ucell start, size;
 210
 211         if (s_phandle_memory == 0)
 212                 return;
 213
 214         /* count phys_range list entries */
 215         for( r = range, ncells = 0; r ; r=r->next, ncells++ ) {
 216         }
 217
 218         /* inverse of phys_range list could take 2 more cells for the tail */
 219         props = malloc((ncells+1) * sizeof(ucell) * 2);
 220
 221         if (props == NULL) {
 222                 /* out of memory! */
 223                 return;
 224         }
 225
 226         start = 0;
 227         ncells = 0;
 228
 229         for (r = range; r; r=r->next) {
 230                 if (r->start >= top_address) {
 231                         break;
 232                 }
 233
 234                 size = r->start - start;
 235                 if (size) {
 236                         props[ncells++] = start;
 237                         props[ncells++] = size;
 238                 }
 239                 start = r->start + r->size;
 240         }
 241
 242         /* tail */
 243         if (start < top_address) {
 244                 props[ncells++] = start;
 245                 props[ncells++] = top_address - start;
 246         }
 247
 248         set_property(ph, "available",
 249                         (char*)props, ncells * sizeof(props[0]));
 250
 251         free(props);
 252 }
 253
 254 static void ofmem_update_translations( void )
 255 {
 256         ofmem_t *ofmem = ofmem_arch_get_private();
 257
 258         ofmem_update_memory_available(s_phandle_memory,
 259                         ofmem->phys_range, get_ram_size());
 260         ofmem_update_memory_available(s_phandle_mmu,
 261                         ofmem->virt_range, -1ULL);
 262         ofmem_update_mmu_translations();
 263 }
 264
 265
 266 /************************************************************************/
 267 /* client interface                                                     */
 268 /************************************************************************/
 269
 270 static int is_free( ucell ea, ucell size, range_t *r )
 271 {
 272         if( size == 0 )
 273                 return 1;
 274         for( ; r ; r=r->next ) {
 275                 if( r->start + r->size - 1 >= ea && r->start <= ea )
 276                         return 0;
 277                 if( r->start >= ea && r->start <= ea + size - 1 )
 278                         return 0;
 279         }
 280         return 1;
 281 }
 282
 283 static void add_entry_( ucell ea, ucell size, range_t **r )
 284 {
 285         range_t *nr;
 286
 287         for( ; *r && (**r).start < ea; r=&(**r).next ) {
 288         }
 289
 290         nr = (range_t*)malloc( sizeof(range_t) );
 291         nr->next = *r;
 292         nr->start = ea;
 293         nr->size = size;
 294         *r = nr;
 295 }
 296
 297 static int add_entry( ucell ea, ucell size, range_t **r )
 298 {
 299         if( !is_free( ea, size, *r ) ) {
 300                 OFMEM_TRACE("add_entry: range not free!\n");
 301                 return -1;
 302         }
 303         add_entry_( ea, size, r );
 304         return 0;
 305 }
 306
 307 #if defined(OFMEM_FILL_RANGE)
 308 static void join_ranges( range_t **rr )
 309 {
 310         range_t *n, *r = *rr;
 311         while( r ) {
 312                 if( !(n=r->next) )
 313                         break;
 314
 315                 if( r->start + r->size - 1 >= n->start -1 ) {
 316                         int s = n->size + (n->start - r->start - r->size);
 317                         if( s > 0 )
 318                                 r->size += s;
 319                         r->next = n->next;
 320                         free( n );
 321                         continue;
 322                 }
 323                 r=r->next;
 324         }
 325 }
 326
 327 static void fill_range( ucell ea, ucell size, range_t **rr )
 328 {
 329         add_entry_( ea, size, rr );
 330         join_ranges( rr );
 331 }
 332 #endif
 333
 334 static ucell find_area( ucell align, ucell size, range_t *r,
 335                 ucell min, ucell max, int reverse )
 336 {
 337         ucell base = min;
 338         range_t *r2;
 339
 340         if( (align & (align-1)) ) {
 341                 OFMEM_TRACE("bad alignment " FMT_ucell "\n", align);
 342                 align = 0x1000;
 343         }
 344         if( !align )
 345                 align = 0x1000;
 346
 347         base = reverse ? max - size : min;
 348         r2 = reverse ? NULL : r;
 349
 350         for( ;; ) {
 351                 if( !reverse ) {
 352                         base = (base + align - 1) & ~(align-1);
 353                         if( base < min )
 354                                 base = min;
 355                         if( base + size - 1 >= max -1 )
 356                                 break;
 357                 } else {
 358                         if( base > max - size )
 359                                 base = max - size;
 360                         base -= base & (align-1);
 361                 }
 362                 if( is_free( base, size, r ) )
 363                         return base;
 364
 365                 if( !reverse ) {
 366                         if( !r2 )
 367                                 break;
 368                         base = r2->start + r2->size;
 369                         r2 = r2->next;
 370                 } else {
 371                         range_t *rp;
 372
 373                         for( rp=r; rp && rp->next != r2 ; rp=rp->next ) {
 374                         }
 375
 376                         r2 = rp;
 377                         if( !r2 )
 378                                 break;
 379                         base = r2->start - size;
 380                 }
 381         }
 382         return -1;
 383 }
 384
 385 static ucell ofmem_claim_phys_( ucell phys, ucell size, ucell align,
 386                 ucell min, ucell max, int reverse )
 387 {
 388         ofmem_t *ofmem = ofmem_arch_get_private();
 389         if( !align ) {
 390                 if( !is_free( phys, size, ofmem->phys_range ) ) {
 391                         OFMEM_TRACE("Non-free physical memory claimed!\n");
 392                         return -1;
 393                 }
 394                 add_entry( phys, size, &ofmem->phys_range );
 395                 return phys;
 396         }
 397         phys = find_area( align, size, ofmem->phys_range, min, max, reverse );
 398         if( phys == -1 ) {
 399                 printk("ofmem_claim_phys - out of space (failed request for " FMT_ucellx " bytes)\n", size);
 400                 return -1;
 401         }
 402         add_entry( phys, size, &ofmem->phys_range );
 403
 404         ofmem_update_translations();
 405
 406         return phys;
 407 }
 408
 409 /* if align != 0, phys is ignored. Returns -1 on error */
 410 ucell ofmem_claim_phys( ucell phys, ucell size, ucell align )
 411 {
 412     OFMEM_TRACE("ofmem_claim phys=" FMT_ucellx " size=" FMT_ucellx
 413                 " align=" FMT_ucellx "\n",
 414                 phys, size, align);
 415
 416         return ofmem_claim_phys_( phys, size, align, 0, get_ram_size(), 0 );
 417 }
 418
 419 static ucell ofmem_claim_virt_( ucell virt, ucell size, ucell align,
 420                 ucell min, ucell max, int reverse )
 421 {
 422         ofmem_t *ofmem = ofmem_arch_get_private();
 423         if( !align ) {
 424                 if( !is_free( virt, size, ofmem->virt_range ) ) {
 425                         OFMEM_TRACE("Non-free virtual memory claimed!\n");
 426                         return -1;
 427                 }
 428                 add_entry( virt, size, &ofmem->virt_range );
 429                 return virt;
 430         }
 431
 432         virt = find_area( align, size, ofmem->virt_range, min, max, reverse );
 433         if( virt == -1 ) {
 434                 printk("ofmem_claim_virt - out of space (failed request for " FMT_ucellx " bytes)\n", size);
 435                 return -1;
 436         }
 437         add_entry( virt, size, &ofmem->virt_range );
 438         return virt;
 439 }
 440
 441 ucell ofmem_claim_virt( ucell virt, ucell size, ucell align )
 442 {
 443     OFMEM_TRACE("ofmem_claim_virt virt=" FMT_ucellx " size=" FMT_ucellx
 444                 " align=" FMT_ucellx "\n",
 445                 virt, size, align);
 446
 447         /* printk("+ ofmem_claim virt %08lx %lx %ld\n", virt, size, align ); */
 448         return ofmem_claim_virt_( virt, size, align,
 449                         get_ram_size(), ofmem_arch_get_virt_top(), 0 );
 450 }
 451
 452 /* if align != 0, phys is ignored. Returns -1 on error */
 453 ucell ofmem_retain( ucell phys, ucell size, ucell align )
 454 {
 455     retain_t *retained = ofmem_arch_get_retained();
 456     ucell retain_phys;
 457
 458     OFMEM_TRACE("ofmem_retain phys=" FMT_ucellx " size=" FMT_ucellx
 459                 " align=" FMT_ucellx "\n",
 460                 phys, size, align);
 461
 462         retain_phys = ofmem_claim_phys_( phys, size, align, 0, get_ram_size(), 0 );
 463
 464         /* Add to the retain_phys_range list */
 465         retained->retain_phys_range[retained->numentries].next = NULL;
 466         retained->retain_phys_range[retained->numentries].start = retain_phys;
 467         retained->retain_phys_range[retained->numentries].size = size;
 468         retained->numentries++;
 469
 470         return retain_phys;
 471 }
 472
 473 /* allocate both physical and virtual space and add a translation */
 474 ucell ofmem_claim( ucell addr, ucell size, ucell align )
 475 {
 476         ofmem_t *ofmem = ofmem_arch_get_private();
 477         ucell virt, phys;
 478         ucell offs = addr & 0xfff;
 479
 480         OFMEM_TRACE("ofmem_claim " FMT_ucellx " " FMT_ucellx " " FMT_ucellx "\n", addr, size, align );
 481         virt = phys = 0;
 482         if( !align ) {
 483                 if( is_free(addr, size, ofmem->virt_range) &&
 484                     is_free(addr, size, ofmem->phys_range) ) {
 485                         ofmem_claim_phys_( addr, size, 0, 0, 0, 0 );
 486                         ofmem_claim_virt_( addr, size, 0, 0, 0, 0 );
 487                         virt = phys = addr;
 488                 } else {
 489                         OFMEM_TRACE("**** ofmem_claim failure ***!\n");
 490                         return -1;
 491                 }
 492         } else {
 493                 if( align < 0x1000 )
 494                         align = 0x1000;
 495                 phys = ofmem_claim_phys_( addr, size, align, 0, get_ram_size(), 1 /* reverse */ );
 496                 virt = ofmem_claim_virt_( addr, size, align, 0, get_ram_size(), 1 /* reverse */ );
 497                 if( phys == -1 || virt == -1 ) {
 498                         OFMEM_TRACE("ofmem_claim failed\n");
 499                         return -1;
 500                 }
 501                 /* printk("...phys = %08lX, virt = %08lX, size = %08lX\n", phys, virt, size ); */
 502         }
 503
 504         /* align */
 505         if( phys & 0xfff ) {
 506                 size += (phys & 0xfff);
 507                 virt -= (phys & 0xfff);
 508                 phys &= ~0xfff;
 509         }
 510         if( size & 0xfff )
 511                 size = (size + 0xfff) & ~0xfff;
 512
 513         /* printk("...free memory found... phys: %08lX, virt: %08lX, size %lX\n", phys, virt, size ); */
 514         ofmem_map( phys, virt, size, -1 );
 515         return virt + offs;
 516 }
 517
 518
 519 /************************************************************************/
 520 /* keep track of ea -> phys translations                                */
 521 /************************************************************************/
 522
 523 static void split_trans( ucell virt )
 524 {
 525         ofmem_t *ofmem = ofmem_arch_get_private();
 526         translation_t *t, *t2;
 527
 528         for( t=ofmem->trans; t; t=t->next ) {
 529                 if( virt > t->virt && virt < t->virt + t->size-1 ) {
 530                         t2 = (translation_t*)malloc( sizeof(translation_t) );
 531                         t2->virt = virt;
 532                         t2->size = t->size - (virt - t->virt);
 533                         t->size = virt - t->virt;
 534                         t2->phys = t->phys + t->size;
 535                         t2->mode = t->mode;
 536                         t2->next = t->next;
 537                         t->next = t2;
 538                 }
 539         }
 540 }
 541
 542 int ofmem_map_page_range( ucell phys, ucell virt, ucell size, ucell mode )
 543 {
 544         ofmem_t *ofmem = ofmem_arch_get_private();
 545         translation_t *t, **tt;
 546
 547         OFMEM_TRACE("ofmem_map_page_range " FMT_ucellx
 548                         " -> " FMT_ucellx " " FMT_ucellx " mode " FMT_ucellx "\n",
 549                         virt, phys, size, mode );
 550
 551         split_trans( virt );
 552         split_trans( virt + size );
 553
 554         /* detect remappings */
 555         for( t=ofmem->trans; t; ) {
 556                 if( virt == t->virt || (virt < t->virt && virt + size > t->virt )) {
 557                         if( t->phys + virt - t->virt != phys ) {
 558                                 OFMEM_TRACE("mapping altered virt=" FMT_ucellx ")\n", t->virt );
 559                         } else if( t->mode != mode ){
 560                                 OFMEM_TRACE("mapping mode altered virt=" FMT_ucellx
 561                                                 " old mode=" FMT_ucellx " new mode=" FMT_ucellx "\n",
 562                                                 t->virt, t->mode, mode);
 563                         }
 564
 565                         for( tt=&ofmem->trans; *tt != t ; tt=&(**tt).next ) {
 566                         }
 567
 568                         *tt = t->next;
 569
 570                         /* really unmap these pages */
 571                         ofmem_arch_unmap_pages(t->virt, t->size);
 572
 573                         free((char*)t);
 574
 575                         t=ofmem->trans;
 576                         continue;
 577                 }
 578                 t=t->next;
 579         }
 580
 581         /* add mapping */
 582         for( tt=&ofmem->trans; *tt && (**tt).virt < virt ; tt=&(**tt).next ) {
 583         }
 584
 585         t = (translation_t*)malloc( sizeof(translation_t) );
 586         t->virt = virt;
 587         t->phys = phys;
 588         t->size = size;
 589         t->mode = mode;
 590         t->next = *tt;
 591         *tt = t;
 592
 593         ofmem_update_translations();
 594
 595         return 0;
 596 }
 597
 598 static int unmap_page_range( ucell virt, ucell size )
 599 {
 600         ofmem_t *ofmem = ofmem_arch_get_private();
 601         translation_t **plink;
 602
 603         /* make sure there is exactly one matching translation entry */
 604
 605         split_trans( virt );
 606         split_trans( virt + size );
 607
 608         /* find and unlink entries in range */
 609         plink = &ofmem->trans;
 610
 611         while (*plink && (*plink)->virt < virt+size) {
 612                 translation_t **plinkentry = plink;
 613                 translation_t *t = *plink;
 614
 615                 /* move ahead */
 616                 plink = &t->next;
 617
 618                 if (t->virt >= virt && t->virt + t->size <= virt+size) {
 619
 620                         /* unlink entry */
 621                         *plinkentry = t->next;
 622
 623                         OFMEM_TRACE("unmap_page_range found "
 624                                         FMT_ucellx " -> " FMT_ucellx " " FMT_ucellx
 625                                         " mode " FMT_ucellx "\n",
 626                                         t->virt, t->phys, t->size, t->mode );
 627
 628                         // really map these pages
 629                         ofmem_arch_unmap_pages(t->virt, t->size);
 630
 631                         free((char*)t);
 632                 }
 633         }
 634
 635         ofmem_update_translations();
 636
 637         return 0;
 638 }
 639
 640 int ofmem_map( ucell phys, ucell virt, ucell size, ucell mode )
 641 {
 642         /* printk("+ofmem_map: %08lX --> %08lX (size %08lX, mode 0x%02X)\n",
 643            virt, phys, size, mode ); */
 644
 645         if( (phys & 0xfff) || (virt & 0xfff) || (size & 0xfff) ) {
 646
 647                 OFMEM_TRACE("ofmem_map: Bad parameters ("
 648                                 FMT_ucellX " " FMT_ucellX " " FMT_ucellX ")\n",
 649                                 phys, virt, size );
 650
 651                 phys &= ~0xfff;
 652                 virt &= ~0xfff;
 653                 size = (size + 0xfff) & ~0xfff;
 654         }
 655
 656 #if defined(OFMEM_FILL_RANGE)
 657         {
 658                 ofmem_t *ofmem = ofmem_arch_get_private();
 659                 /* claim any unclaimed virtual memory in the range */
 660                 fill_range( virt, size, &ofmem->virt_range );
 661                 /* hmm... we better claim the physical range too */
 662                 fill_range( phys, size, &ofmem->phys_range );
 663         }
 664 #endif
 665
 666         if (mode==-1) {
 667                 mode = ofmem_arch_default_translation_mode(phys);
 668         }
 669
 670         /* install translations */
 671         ofmem_map_page_range(phys, virt, size, mode);
 672
 673         /* allow arch to install mappings early, e.g. for locked mappings */
 674         ofmem_arch_early_map_pages(phys, virt, size, mode);
 675
 676         return 0;
 677 }
 678
 679 int ofmem_unmap( ucell virt, ucell size )
 680 {
 681         OFMEM_TRACE("ofmem_unmap " FMT_ucellx " " FMT_ucellx "\n",
 682                         virt, size );
 683
 684         if( (virt & 0xfff) || (size & 0xfff) ) {
 685                 /* printk("ofmem_unmap: Bad parameters (%08lX %08lX)\n",
 686                                 virt, size ); */
 687                 virt &= ~0xfff;
 688                 size = (size + 0xfff) & ~0xfff;
 689         }
 690
 691         /* remove translations and unmap pages */
 692         unmap_page_range(virt, size);
 693
 694         return 0;
 695 }
 696
 697 /* virtual -> physical. */
 698 ucell ofmem_translate( ucell virt, ucell *mode )
 699 {
 700         ofmem_t *ofmem = ofmem_arch_get_private();
 701         translation_t *t;
 702
 703         for( t=ofmem->trans; t && t->virt <= virt ; t=t->next ) {
 704                 ucell offs;
 705                 if( t->virt + t->size - 1 < virt )
 706                         continue;
 707                 offs = virt - t->virt;
 708                 *mode = t->mode;
 709                 return t->phys + offs;
 710         }
 711
 712         /*printk("ofmem_translate: no translation defined (%08lx)\n", virt);*/
 713         /*print_trans();*/
 714         return -1;
 715 }
 716
 717 /* release memory allocated by ofmem_claim_phys */
 718 void ofmem_release_phys( ucell phys, ucell size )
 719 {
 720     OFMEM_TRACE("ofmem_release_phys addr=" FMT_ucellx " size=" FMT_ucellx "\n",
 721                 phys, size);
 722
 723         OFMEM_TRACE("ofmem_release_phys not implemented");
 724 }
 725
 726 /* release memory allocated by ofmem_claim_virt */
 727 void ofmem_release_virt( ucell virt, ucell size )
 728 {
 729     OFMEM_TRACE("ofmem_release_virt addr=" FMT_ucellx " size=" FMT_ucellx "\n",
 730                 virt, size);
 731
 732         OFMEM_TRACE("ofmem_release_virt not implemented");
 733 }
 734
 735 /************************************************************************/
 736 /* init / cleanup                                                       */
 737 /************************************************************************/
 738
 739 void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu )
 740 {
 741         s_phandle_memory = ph_memory;
 742         s_phandle_mmu = ph_mmu;
 743
 744         ofmem_update_translations();
 745 }