1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <asm-generic/vmlinux.lds.h> 3 4 #ifdef CONFIG_HOTPLUG_CPU 5 #define ARM_CPU_DISCARD(x) 6 #define ARM_CPU_KEEP(x) x 7 #else 8 #define ARM_CPU_DISCARD(x) x 9 #define ARM_CPU_KEEP(x) 10 #endif 11 12 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \ 13 defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL) 14 #define ARM_EXIT_KEEP(x) x 15 #define ARM_EXIT_DISCARD(x) 16 #else 17 #define ARM_EXIT_KEEP(x) 18 #define ARM_EXIT_DISCARD(x) x 19 #endif 20 21 #ifdef CONFIG_MMU 22 #define ARM_MMU_KEEP(x) x 23 #define ARM_MMU_DISCARD(x) 24 #else 25 #define ARM_MMU_KEEP(x) 26 #define ARM_MMU_DISCARD(x) x 27 #endif 28 29 /* 30 * ld.lld does not support NOCROSSREFS: 31 * https://github.com/ClangBuiltLinux/linux/issues/1609 32 */ 33 #ifdef CONFIG_LD_IS_LLD 34 #define NOCROSSREFS 35 #endif 36 37 /* Set start/end symbol names to the LMA for the section */ 38 #define ARM_LMA(sym, section) \ 39 sym##_start = LOADADDR(section); \ 40 sym##_end = LOADADDR(section) + SIZEOF(section) 41 42 #define PROC_INFO \ 43 . = ALIGN(4); \ 44 __proc_info_begin = .; \ 45 *(.proc.info.init) \ 46 __proc_info_end = .; 47 48 #define IDMAP_TEXT \ 49 ALIGN_FUNCTION(); \ 50 __idmap_text_start = .; \ 51 *(.idmap.text) \ 52 __idmap_text_end = .; \ 53 54 #define ARM_DISCARD \ 55 *(.ARM.exidx.exit.text) \ 56 *(.ARM.extab.exit.text) \ 57 *(.ARM.exidx.text.exit) \ 58 *(.ARM.extab.text.exit) \ 59 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \ 60 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \ 61 ARM_EXIT_DISCARD(EXIT_TEXT) \ 62 ARM_EXIT_DISCARD(EXIT_DATA) \ 63 EXIT_CALL \ 64 ARM_MMU_DISCARD(*(.text.fixup)) \ 65 ARM_MMU_DISCARD(*(__ex_table)) \ 66 COMMON_DISCARDS 67 68 /* 69 * Sections that should stay zero sized, which is safer to explicitly 70 * check instead of blindly discarding. 71 */ 72 #define ARM_ASSERTS \ 73 .plt : { \ 74 *(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt) \ 75 } \ 76 ASSERT(SIZEOF(.plt) == 0, \ 77 "Unexpected run-time procedure linkages detected!") 78 79 #define ARM_DETAILS \ 80 ELF_DETAILS \ 81 .ARM.attributes 0 : { *(.ARM.attributes) } 82 83 #define ARM_STUBS_TEXT \ 84 *(.gnu.warning) \ 85 *(.glue_7) \ 86 *(.glue_7t) \ 87 *(.vfp11_veneer) \ 88 *(.v4_bx) 89 90 #define ARM_TEXT \ 91 IDMAP_TEXT \ 92 __entry_text_start = .; \ 93 *(.entry.text) \ 94 __entry_text_end = .; \ 95 IRQENTRY_TEXT \ 96 SOFTIRQENTRY_TEXT \ 97 TEXT_TEXT \ 98 SCHED_TEXT \ 99 LOCK_TEXT \ 100 KPROBES_TEXT \ 101 ARM_STUBS_TEXT \ 102 . = ALIGN(4); \ 103 *(.got) /* Global offset table */ \ 104 ARM_CPU_KEEP(PROC_INFO) 105 106 /* Stack unwinding tables */ 107 #define ARM_UNWIND_SECTIONS \ 108 . = ALIGN(8); \ 109 .ARM.unwind_idx : { \ 110 __start_unwind_idx = .; \ 111 *(.ARM.exidx*) \ 112 __stop_unwind_idx = .; \ 113 } \ 114 .ARM.unwind_tab : { \ 115 __start_unwind_tab = .; \ 116 *(.ARM.extab*) \ 117 __stop_unwind_tab = .; \ 118 } 119 120 /* 121 * The vectors and stubs are relocatable code, and the 122 * only thing that matters is their relative offsets 123 */ 124 #define ARM_VECTORS \ 125 __vectors_lma = .; \ 126 OVERLAY 0xffff0000 : NOCROSSREFS AT(__vectors_lma) { \ 127 .vectors { \ 128 *(.vectors) \ 129 } \ 130 .vectors.bhb.loop8 { \ 131 *(.vectors.bhb.loop8) \ 132 } \ 133 .vectors.bhb.bpiall { \ 134 *(.vectors.bhb.bpiall) \ 135 } \ 136 } \ 137 ARM_LMA(__vectors, .vectors); \ 138 ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8); \ 139 ARM_LMA(__vectors_bhb_bpiall, .vectors.bhb.bpiall); \ 140 . = __vectors_lma + SIZEOF(.vectors) + \ 141 SIZEOF(.vectors.bhb.loop8) + \ 142 SIZEOF(.vectors.bhb.bpiall); \ 143 \ 144 __stubs_lma = .; \ 145 .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) { \ 146 *(.stubs) \ 147 } \ 148 ARM_LMA(__stubs, .stubs); \ 149 . = __stubs_lma + SIZEOF(.stubs); \ 150 \ 151 PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors)); 152 153 #define ARM_TCM \ 154 __itcm_start = ALIGN(4); \ 155 .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) { \ 156 __sitcm_text = .; \ 157 *(.tcm.text) \ 158 *(.tcm.rodata) \ 159 . = ALIGN(4); \ 160 __eitcm_text = .; \ 161 } \ 162 . = __itcm_start + SIZEOF(.text_itcm); \ 163 \ 164 __dtcm_start = .; \ 165 .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) { \ 166 __sdtcm_data = .; \ 167 *(.tcm.data) \ 168 . = ALIGN(4); \ 169 __edtcm_data = .; \ 170 } \ 171 . = __dtcm_start + SIZEOF(.data_dtcm); 172