src/include/memlayout.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* This file contains macro definitions for memlayout.ld linker scripts. */
   4
   5 #ifndef __MEMLAYOUT_H
   6 #define __MEMLAYOUT_H
   7
   8 #include <arch/memlayout.h>
   9 #include <vb2_constants.h>
  10
  11 #include "fmap_config.h"
  12
  13 /* Macros that the architecture can override. */
  14 #ifndef ARCH_POINTER_ALIGN_SIZE
  15 #define ARCH_POINTER_ALIGN_SIZE 8
  16 #endif
  17
  18 #ifndef ARCH_CACHELINE_ALIGN_SIZE
  19 #define ARCH_CACHELINE_ALIGN_SIZE 64
  20 #endif
  21
  22 #define STR(x) XSTR(x)
  23 #define XSTR(x) #x
  24
  25 #define ALIGN_COUNTER(align) \
  26         . = ALIGN(align);
  27
  28 #define SET_COUNTER(name, addr) \
  29         _ = ASSERT(. <= addr, STR(name overlaps the previous region!)); \
  30         . = addr;
  31
  32 #define SYMBOL(name, addr) \
  33         SET_COUNTER(name, addr) \
  34         _##name = ABSOLUTE(.);
  35
  36 #define RECORD_SIZE(name) \
  37         _##name##_size = ABSOLUTE(_e##name - _##name);
  38
  39 #define REGION(name, addr, size, expected_align) \
  40         SYMBOL(name, addr) \
  41         _ = ASSERT(. == ALIGN(expected_align), \
  42                 STR(name must be aligned to expected_align!)); \
  43         SYMBOL(e##name, addr + size) \
  44         RECORD_SIZE(name)
  45
  46 #define ALIAS_REGION(name, alias) \
  47         _##alias = ABSOLUTE(_##name); \
  48         _e##alias = ABSOLUTE(_e##name); \
  49         RECORD_SIZE(alias)
  50
  51 #define REGION_START(name, addr) SYMBOL(name, addr)
  52
  53 #define REGION_END(name, addr) \
  54         SYMBOL(e##name, addr) \
  55         RECORD_SIZE(name)
  56
  57 /* Declare according to SRAM/DRAM ranges in SoC hardware-defined address map. */
  58 #define SRAM_START(addr) REGION_START(sram, addr)
  59
  60 #define SRAM_END(addr) REGION_END(sram, addr)
  61
  62 #define DRAM_START(addr) REGION_START(dram, addr)
  63
  64 #define TIMESTAMP(addr, size) \
  65         REGION(timestamp, addr, size, 8) \
  66         _ = ASSERT(size >= 212, "Timestamp region must fit timestamp_cache!");
  67
  68 #define PRERAM_CBMEM_CONSOLE(addr, size) \
  69         REGION(preram_cbmem_console, addr, size, 4)
  70
  71 #define EARLYRAM_STACK(addr, size) \
  72         REGION(earlyram_stack, addr, size, ARCH_STACK_ALIGN_SIZE)
  73
  74 /* Use either CBFS_CACHE (unified) or both (PRERAM|POSTRAM)_CBFS_CACHE */
  75 #define CBFS_CACHE(addr, size) \
  76         REGION(cbfs_cache, addr, size, 4) \
  77         ALIAS_REGION(cbfs_cache, preram_cbfs_cache) \
  78         ALIAS_REGION(cbfs_cache, postram_cbfs_cache)
  79
  80 #define FMAP_CACHE(addr, sz) \
  81         REGION(fmap_cache, addr, sz, 4) \
  82         _ = ASSERT(sz >= FMAP_SIZE, \
  83                    STR(FMAP does not fit in FMAP_CACHE! (sz < FMAP_SIZE)));
  84
  85 #define CBFS_MCACHE(addr, sz) \
  86         REGION(cbfs_mcache, addr, sz, 4)
  87
  88 #if ENV_ROMSTAGE_OR_BEFORE
  89         #define PRERAM_CBFS_CACHE(addr, size) \
  90                 REGION(preram_cbfs_cache, addr, size, 4) \
  91                 ALIAS_REGION(preram_cbfs_cache, cbfs_cache)
  92         #define POSTRAM_CBFS_CACHE(addr, size) \
  93                 REGION(postram_cbfs_cache, addr, size, 4)
  94 #else
  95         #define PRERAM_CBFS_CACHE(addr, size) \
  96                 REGION(preram_cbfs_cache, addr, size, 4)
  97         #define POSTRAM_CBFS_CACHE(addr, size) \
  98                 REGION(postram_cbfs_cache, addr, size, 4) \
  99                 ALIAS_REGION(postram_cbfs_cache, cbfs_cache)
 100 #endif
 101
 102 /* Careful: 'INCLUDE <filename>' must always be at the end of the output line */
 103 #if ENV_DECOMPRESSOR
 104         #define DECOMPRESSOR(addr, sz) \
 105                 SYMBOL(decompressor, addr) \
 106                 _edecompressor = ABSOLUTE(_decompressor + sz); \
 107                 RECORD_SIZE(decompressor) \
 108                 _ = ASSERT(_eprogram - _program <= sz, \
 109                         STR(decompressor exceeded its allotted size! (sz))); \
 110                 INCLUDE "decompressor/lib/program.ld"
 111
 112         #define OVERLAP_DECOMPRESSOR_ROMSTAGE(addr, sz) DECOMPRESSOR(addr, sz)
 113         #define OVERLAP_DECOMPRESSOR_VERSTAGE_ROMSTAGE(addr, sz) \
 114                 DECOMPRESSOR(addr, sz)
 115 #else
 116         #define DECOMPRESSOR(addr, sz) \
 117                 REGION(decompressor, addr, sz, 1)
 118
 119         #define OVERLAP_DECOMPRESSOR_ROMSTAGE(addr, sz) ROMSTAGE(addr, sz)
 120         #define OVERLAP_DECOMPRESSOR_VERSTAGE_ROMSTAGE(addr, sz) \
 121                 OVERLAP_VERSTAGE_ROMSTAGE(addr, sz)
 122 #endif
 123
 124 #if ENV_BOOTBLOCK
 125         #define BOOTBLOCK(addr, sz) \
 126                 SYMBOL(bootblock, addr) \
 127                 _ebootblock = ABSOLUTE(_bootblock + sz); \
 128                 RECORD_SIZE(bootblock) \
 129                 _ = ASSERT(_eprogram - _program <= sz, \
 130                         STR(Bootblock exceeded its allotted size! (sz))); \
 131                 INCLUDE "bootblock/lib/program.ld"
 132 #else
 133         #define BOOTBLOCK(addr, sz) \
 134                 REGION(bootblock, addr, sz, 1)
 135 #endif
 136
 137 #if ENV_SEPARATE_ROMSTAGE
 138         #define ROMSTAGE(addr, sz) \
 139                 SYMBOL(romstage, addr) \
 140                 _eromstage = ABSOLUTE(_romstage + sz); \
 141                 RECORD_SIZE(romstage) \
 142                 _ = ASSERT(_eprogram - _program <= sz, \
 143                         STR(Romstage exceeded its allotted size! (sz))); \
 144                 INCLUDE "romstage/lib/program.ld"
 145 #else
 146         #define ROMSTAGE(addr, sz) \
 147                 REGION(romstage, addr, sz, 1)
 148 #endif
 149
 150 #if ENV_RAMSTAGE
 151         #define RAMSTAGE(addr, sz) \
 152                 SYMBOL(ramstage, addr) \
 153                 _eramstage = ABSOLUTE(_ramstage + sz); \
 154                 RECORD_SIZE(ramstage) \
 155                 _ = ASSERT(_eprogram - _program <= sz, \
 156                         STR(Ramstage exceeded its allotted size! (sz))); \
 157                 INCLUDE "ramstage/lib/program.ld"
 158 #else
 159         #define RAMSTAGE(addr, sz) \
 160                 REGION(ramstage, addr, sz, 1)
 161 #endif
 162
 163 /* VBOOT2_WORK must always use VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE for its
 164  * size argument.  The constant is imported via 2constants.h.  */
 165 #define VBOOT2_WORK(addr, sz) \
 166         REGION(vboot2_work, addr, sz, 16) \
 167         _ = ASSERT(sz == VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE, \
 168                 STR(vboot2 work buffer size must be equivalent to \
 169                         VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE! (sz)));
 170
 171 #define TPM_LOG(addr, size) \
 172         REGION(tpm_log, addr, size, 16) \
 173         _ = ASSERT(size >= 2K, "tpm log buffer must be at least 2K!");
 174
 175 #if ENV_SEPARATE_VERSTAGE
 176         #define VERSTAGE(addr, sz) \
 177                 SYMBOL(verstage, addr) \
 178                 _everstage = ABSOLUTE(_verstage + sz); \
 179                 RECORD_SIZE(verstage) \
 180                 _ = ASSERT(_eprogram - _program <= sz, \
 181                         STR(Verstage exceeded its allotted size! (sz))); \
 182                 INCLUDE "verstage/lib/program.ld"
 183
 184         #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) \
 185                 _ = ASSERT(CONFIG(VBOOT_RETURN_FROM_VERSTAGE) == 1, \
 186                         "Must set RETURN_FROM_VERSTAGE to overlap romstage."); \
 187                 VERSTAGE(addr, size)
 188 #else
 189         #define VERSTAGE(addr, sz) \
 190                 REGION(verstage, addr, sz, 1)
 191
 192         #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size)
 193 #endif
 194
 195 #if ENV_POSTCAR
 196         #define POSTCAR(addr, sz) \
 197                 SYMBOL(postcar, addr) \
 198                 _epostcar = ABSOLUTE(_postcar + sz); \
 199                 RECORD_SIZE(postcar) \
 200                 _ = ASSERT(_eprogram - _program <= sz, \
 201                         STR(Aftercar exceeded its allotted size! (sz))); \
 202                 INCLUDE "postcar/lib/program.ld"
 203 #else
 204         #define POSTCAR(addr, sz) \
 205                 REGION(postcar, addr, sz, 1)
 206 #endif
 207
 208 #define WATCHDOG_TOMBSTONE(addr, size) \
 209         REGION(watchdog_tombstone, addr, size, 4) \
 210         _ = ASSERT(size == 4, "watchdog tombstones should be exactly 4 byte!");
 211
 212 #endif /* __MEMLAYOUT_H */