Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2015 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. |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include <memlayout.h> |
| 17 | |
| 18 | /* This file is included inside a SECTIONS block */ |
| 19 | |
| 20 | /* First we place the code and read only data (typically const declared). |
| 21 | * This could theoretically be placed in rom. |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 22 | * The '.' in '.text . : {' is actually significant to prevent missing some |
| 23 | * SoC's entry points due to artificial alignment restrictions, see |
| 24 | * https://sourceware.org/binutils/docs/ld/Output-Section-Address.html |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 25 | */ |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 26 | .text . : { |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 27 | _program = .; |
| 28 | _text = .; |
Aaron Durbin | 14714e1 | 2015-09-04 12:06:05 -0500 | [diff] [blame] | 29 | /* |
| 30 | * The .rom.* sections are to acommodate x86 romstage. romcc as well |
| 31 | * as the assembly files put their text and data in these sections. |
| 32 | */ |
| 33 | *(.rom.text); |
| 34 | *(.rom.data); |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 35 | *(.text._start); |
| 36 | *(.text.stage_entry); |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 37 | KEEP(*(.id)); |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 38 | *(.text); |
| 39 | *(.text.*); |
| 40 | |
Aaron Durbin | 1e9a914 | 2016-09-16 16:23:21 -0500 | [diff] [blame] | 41 | #if ENV_RAMSTAGE || ENV_ROMSTAGE || ENV_POSTCAR |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 42 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 43 | _cbmem_init_hooks = .; |
| 44 | KEEP(*(.rodata.cbmem_init_hooks)); |
| 45 | _ecbmem_init_hooks = .; |
Stefan Reinauer | f6b1039 | 2016-05-20 15:17:17 -0700 | [diff] [blame] | 46 | #endif |
Lee Leahy | efcee9f | 2016-04-29 17:26:36 -0700 | [diff] [blame] | 47 | |
| 48 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 49 | _rsbe_init_begin = .; |
| 50 | KEEP(*(.rsbe_init)); |
| 51 | _ersbe_init_begin = .; |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 52 | |
Aaron Durbin | 83bc0db | 2015-09-06 10:45:18 -0500 | [diff] [blame] | 53 | #if ENV_RAMSTAGE |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 54 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 55 | _pci_drivers = .; |
| 56 | KEEP(*(.rodata.pci_driver)); |
| 57 | _epci_drivers = .; |
| 58 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 59 | _cpu_drivers = .; |
| 60 | KEEP(*(.rodata.cpu_driver)); |
| 61 | _ecpu_drivers = .; |
| 62 | #endif |
| 63 | |
| 64 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 65 | *(.rodata); |
| 66 | *(.rodata.*); |
| 67 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 68 | _etext = .; |
| 69 | } : to_load |
| 70 | |
| 71 | #if ENV_RAMSTAGE && IS_ENABLED(CONFIG_COVERAGE) |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 72 | .ctors . : { |
Patrick Georgi | 9cc8e92 | 2015-09-27 13:45:17 +0200 | [diff] [blame] | 73 | . = ALIGN(0x100); |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 74 | __CTOR_LIST__ = .; |
| 75 | KEEP(*(.ctors)); |
| 76 | LONG(0); |
| 77 | LONG(0); |
| 78 | __CTOR_END__ = .; |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | /* Include data, bss, and heap in that order. Not defined for all stages. */ |
| 83 | #if ARCH_STAGE_HAS_DATA_SECTION |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 84 | .data . : { |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 85 | . = ALIGN(ARCH_CACHELINE_ALIGN_SIZE); |
| 86 | _data = .; |
Aaron Durbin | dde7629 | 2015-09-05 12:59:26 -0500 | [diff] [blame] | 87 | |
Aaron Durbin | 7f8afe0 | 2016-03-18 12:21:23 -0500 | [diff] [blame] | 88 | /* |
| 89 | * The postcar phase uses a stack value that is located in the relocatable |
| 90 | * module section. While the postcar stage could be linked like smm and |
| 91 | * other rmodules the postcar stage needs similar semantics of the more |
| 92 | * traditional stages in the coreboot infrastructure. Therefore it's easier |
| 93 | * to specialize this case. |
| 94 | */ |
| 95 | #if ENV_RMODULE || ENV_POSTCAR |
Aaron Durbin | dde7629 | 2015-09-05 12:59:26 -0500 | [diff] [blame] | 96 | _rmodule_params = .; |
| 97 | KEEP(*(.module_parameters)); |
| 98 | _ermodule_params = .; |
| 99 | #endif |
| 100 | |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 101 | *(.data); |
| 102 | *(.data.*); |
Aaron Durbin | 9a2790e | 2016-10-28 12:24:48 -0500 | [diff] [blame] | 103 | *(.sdata); |
| 104 | *(.sdata.*); |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 105 | |
| 106 | #ifdef __PRE_RAM__ |
| 107 | PROVIDE(_preram_cbmem_console = .); |
| 108 | PROVIDE(_epreram_cbmem_console = _preram_cbmem_console); |
Aaron Durbin | 83bc0db | 2015-09-06 10:45:18 -0500 | [diff] [blame] | 109 | #elif ENV_RAMSTAGE |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 110 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 111 | _bs_init_begin = .; |
| 112 | KEEP(*(.bs_init)); |
| 113 | LONG(0); |
| 114 | LONG(0); |
| 115 | _ebs_init_begin = .; |
| 116 | #endif |
| 117 | |
| 118 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 119 | _edata = .; |
| 120 | } |
| 121 | #endif |
| 122 | |
| 123 | #if ARCH_STAGE_HAS_BSS_SECTION |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 124 | .bss . : { |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 125 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 126 | _bss = .; |
| 127 | *(.bss) |
| 128 | *(.bss.*) |
| 129 | *(.sbss) |
| 130 | *(.sbss.*) |
| 131 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 132 | _ebss = .; |
| 133 | } |
| 134 | #endif |
| 135 | |
| 136 | #if ARCH_STAGE_HAS_HEAP_SECTION |
Julius Werner | 52a9260 | 2015-09-11 16:17:50 -0700 | [diff] [blame] | 137 | .heap . : { |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 138 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 139 | _heap = .; |
Aaron Durbin | dde7629 | 2015-09-05 12:59:26 -0500 | [diff] [blame] | 140 | . += (ENV_RMODULE ? __heap_size : CONFIG_HEAP_SIZE); |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 141 | . = ALIGN(ARCH_POINTER_ALIGN_SIZE); |
| 142 | _eheap = .; |
| 143 | } |
| 144 | #endif |
| 145 | |
| 146 | _eprogram = .; |
| 147 | |
| 148 | /* Discard the sections we don't need/want */ |
| 149 | |
Patrick Georgi | fab8ae7 | 2016-04-13 20:55:34 +0200 | [diff] [blame] | 150 | zeroptr = 0; |
Patrick Georgi | ff8076d | 2016-01-27 08:18:16 +0100 | [diff] [blame] | 151 | |
Aaron Durbin | 4de29d4 | 2015-09-03 22:49:36 -0500 | [diff] [blame] | 152 | /DISCARD/ : { |
| 153 | *(.comment) |
| 154 | *(.comment.*) |
| 155 | *(.note) |
| 156 | *(.note.*) |
| 157 | *(.eh_frame); |
| 158 | } |