include/plat/common/common_def.h

   1 /*
   2  * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6 #ifndef COMMON_DEF_H
   7 #define COMMON_DEF_H
   8
   9 #include <platform_def.h>
  10
  11 #include <common/bl_common.h>
  12 #include <lib/utils_def.h>
  13 #include <lib/xlat_tables/xlat_tables_defs.h>
  14
  15 /******************************************************************************
  16  * Required platform porting definitions that are expected to be common to
  17  * all platforms
  18  *****************************************************************************/
  19
  20 /*
  21  * Platform binary types for linking
  22  */
  23 #ifdef AARCH32
  24 #define PLATFORM_LINKER_FORMAT          "elf32-littlearm"
  25 #define PLATFORM_LINKER_ARCH            arm
  26 #else
  27 #define PLATFORM_LINKER_FORMAT          "elf64-littleaarch64"
  28 #define PLATFORM_LINKER_ARCH            aarch64
  29 #endif /* AARCH32 */
  30
  31 /*
  32  * Generic platform constants
  33  */
  34 #define FIRMWARE_WELCOME_STR            "Booting Trusted Firmware\n"
  35
  36 #define BL2_IMAGE_DESC {                                \
  37         .image_id = BL2_IMAGE_ID,                       \
  38         SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,     \
  39                 VERSION_2, image_info_t, 0),            \
  40         .image_info.image_base = BL2_BASE,              \
  41         .image_info.image_max_size = BL2_LIMIT - BL2_BASE,\
  42         SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,        \
  43                 VERSION_2, entry_point_info_t, SECURE | EXECUTABLE),\
  44         .ep_info.pc = BL2_BASE,                         \
  45 }
  46
  47 /*
  48  * The following constants identify the extents of the code & read-only data
  49  * regions. These addresses are used by the MMU setup code and therefore they
  50  * must be page-aligned.
  51  *
  52  * When the code and read-only data are mapped as a single atomic section
  53  * (i.e. when SEPARATE_CODE_AND_RODATA=0) then we treat the whole section as
  54  * code by specifying the read-only data section as empty.
  55  *
  56  * BL1 is different than the other images in the sense that its read-write data
  57  * originally lives in Trusted ROM and needs to be relocated in Trusted SRAM at
  58  * run-time. Therefore, the read-write data in ROM can be mapped with the same
  59  * memory attributes as the read-only data region. For this reason, BL1 uses
  60  * different macros.
  61  *
  62  * Note that BL1_ROM_END is not necessarily aligned on a page boundary as it
  63  * just points to the end of BL1's actual content in Trusted ROM. Therefore it
  64  * needs to be rounded up to the next page size in order to map the whole last
  65  * page of it with the right memory attributes.
  66  */
  67 #if SEPARATE_CODE_AND_RODATA
  68
  69 #define BL1_CODE_END            BL_CODE_END
  70 #define BL1_RO_DATA_BASE        BL_RO_DATA_BASE
  71 #define BL1_RO_DATA_END         round_up(BL1_ROM_END, PAGE_SIZE)
  72 #if BL2_IN_XIP_MEM
  73 #define BL2_CODE_END            BL_CODE_END
  74 #define BL2_RO_DATA_BASE        BL_RO_DATA_BASE
  75 #define BL2_RO_DATA_END         round_up(BL2_ROM_END, PAGE_SIZE)
  76 #endif /* BL2_IN_XIP_MEM */
  77 #else
  78 #define BL_RO_DATA_BASE         UL(0)
  79 #define BL_RO_DATA_END          UL(0)
  80 #define BL1_CODE_END            round_up(BL1_ROM_END, PAGE_SIZE)
  81 #if BL2_IN_XIP_MEM
  82 #define BL2_RO_DATA_BASE        UL(0)
  83 #define BL2_RO_DATA_END         UL(0)
  84 #define BL2_CODE_END            round_up(BL2_ROM_END, PAGE_SIZE)
  85 #endif /* BL2_IN_XIP_MEM */
  86 #endif /* SEPARATE_CODE_AND_RODATA */
  87
  88 #endif /* COMMON_DEF_H */