src/include/symbols.h

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright 2014 Google Inc.
   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 as published by
   8  * the Free Software Foundation; version 2 of the License.
   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
  16 #ifndef __SYMBOLS_H
  17 #define __SYMBOLS_H
  18
  19 #include <types.h>
  20
  21 extern u8 _sram[];
  22 extern u8 _esram[];
  23 #define _sram_size (_esram - _sram)
  24
  25 extern u8 _dram[];
  26
  27 extern u8 _timestamp[];
  28 extern u8 _etimestamp[];
  29 #define _timestamp_size (_etimestamp - _timestamp)
  30
  31 extern u8 _preram_cbmem_console[];
  32 extern u8 _epreram_cbmem_console[];
  33 #define _preram_cbmem_console_size \
  34                 (_epreram_cbmem_console - _preram_cbmem_console)
  35
  36 extern u8 _cbmem_init_hooks[];
  37 extern u8 _ecbmem_init_hooks[];
  38 #define _cbmem_init_hooks_size (_ecbmem_init_hooks - _cbmem_init_hooks)
  39
  40 extern u8 _stack[];
  41 extern u8 _estack[];
  42 #define _stack_size (_estack - _stack)
  43
  44 extern u8 _pagetables[];
  45 extern u8 _epagetables[];
  46 #define _pagetables_size (_epagetables - _pagetables)
  47
  48 extern u8 _preram_cbfs_cache[];
  49 extern u8 _epreram_cbfs_cache[];
  50 #define _preram_cbfs_cache_size (_epreram_cbfs_cache - _preram_cbfs_cache)
  51
  52 extern u8 _postram_cbfs_cache[];
  53 extern u8 _epostram_cbfs_cache[];
  54 #define _postram_cbfs_cache_size (_epostram_cbfs_cache - _postram_cbfs_cache)
  55
  56 extern u8 _cbfs_cache[];
  57 extern u8 _ecbfs_cache[];
  58 #define _cbfs_cache_size (_ecbfs_cache - _cbfs_cache)
  59
  60 extern u8 _payload[];
  61 extern u8 _epayload[];
  62 #define _payload_size (_epayload - _payload)
  63
  64 /* "program" always refers to the current execution unit. */
  65 extern u8 _program[];
  66 extern u8 _eprogram[];
  67 #define _program_size (_eprogram - _program)
  68
  69 /* _<stage>_size is always the maximum amount allocated in memlayout, whereas
  70  * _program_size gives the actual memory footprint *used* by current stage. */
  71 extern u8 _decompressor[];
  72 extern u8 _edecompressor[];
  73 #define _decompressor_size (_edecompressor - _decompressor)
  74
  75 extern u8 _bootblock[];
  76 extern u8 _ebootblock[];
  77 #define _bootblock_size (_ebootblock - _bootblock)
  78
  79 extern u8 _romstage[];
  80 extern u8 _eromstage[];
  81 #define _romstage_size (_eromstage - _romstage)
  82
  83 extern u8 _ramstage[];
  84 extern u8 _eramstage[];
  85 #define _ramstage_size (_eramstage - _ramstage)
  86
  87 extern u8 _verstage[];
  88 extern u8 _everstage[];
  89 #define _verstage_size (_everstage - _verstage)
  90
  91 /* Arch-specific, move to <arch/symbols.h> if they become too many. */
  92
  93 extern u8 _ttb[];
  94 extern u8 _ettb[];
  95 #define _ttb_size (_ettb - _ttb)
  96
  97 extern u8 _ttb_subtables[];
  98 extern u8 _ettb_subtables[];
  99 #define _ttb_subtables_size (_ettb_subtables - _ttb_subtables)
 100
 101 extern u8 _dma_coherent[];
 102 extern u8 _edma_coherent[];
 103 #define _dma_coherent_size (_edma_coherent - _dma_coherent)
 104
 105 extern u8 _soc_registers[];
 106 extern u8 _esoc_registers[];
 107 #define _soc_registers_size (_esoc_registers - _soc_registers)
 108
 109 extern u8 _framebuffer[];
 110 extern u8 _eframebuffer[];
 111 #define _framebuffer_size (_eframebuffer - _framebuffer)
 112
 113 extern u8 _pdpt[];
 114 extern u8 _epdpt[];
 115 #define _pdpt_size (_epdpt - _pdpt)
 116
 117 /* Put this into a .c file accessing a linker script region to mark that region
 118  * as "optional". If it is defined in memlayout.ld (or anywhere else), the
 119  * values from that definition will be used. If not, start, end and size will
 120  * all evaluate to 0. (We can't explicitly assign the symbols to 0 in the
 121  * assembly due to https://sourceware.org/bugzilla/show_bug.cgi?id=1038.) */
 122 #define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name)
 123
 124 #endif /* __SYMBOLS_H */