1/* SPDX-License-Identifier: GPL-2.0 */ 2#include <asm/asm-offsets.h> 3#include <asm/thread_info.h> 4 5#define PAGE_SIZE _PAGE_SIZE 6 7/* 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will 9 * ensure that it has .bss alignment (64K). 10 */ 11#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir) 12 13/* Cavium Octeon should not have a separate PT_NOTE Program Header. */ 14#ifndef CONFIG_CAVIUM_OCTEON_SOC 15#define EMITS_PT_NOTE 16#endif 17 18#define RUNTIME_DISCARD_EXIT 19 20#include <asm-generic/vmlinux.lds.h> 21 22#undef mips 23#define mips mips 24OUTPUT_ARCH(mips) 25ENTRY(kernel_entry) 26PHDRS { 27 text PT_LOAD FLAGS(7); /* RWX */ 28#ifndef CONFIG_CAVIUM_OCTEON_SOC 29 note PT_NOTE FLAGS(4); /* R__ */ 30#endif /* CAVIUM_OCTEON_SOC */ 31} 32 33#ifdef CONFIG_32BIT 34 #ifdef CONFIG_CPU_LITTLE_ENDIAN 35 jiffies = jiffies_64; 36 #else 37 jiffies = jiffies_64 + 4; 38 #endif 39#else 40 jiffies = jiffies_64; 41#endif 42 43SECTIONS 44{ 45#ifdef CONFIG_BOOT_ELF64 46 /* Read-only sections, merged into text segment: */ 47 /* . = 0xc000000000000000; */ 48 49 /* This is the value for an Origin kernel, taken from an IRIX kernel. */ 50 /* . = 0xc00000000001c000; */ 51 52 /* Set the vaddr for the text segment to a value 53 * >= 0xa800 0000 0001 9000 if no symmon is going to configured 54 * >= 0xa800 0000 0030 0000 otherwise 55 */ 56 57 /* . = 0xa800000000300000; */ 58 . = 0xffffffff80300000; 59#endif 60 . = LINKER_LOAD_ADDRESS; 61 /* read-only */ 62 _text = .; /* Text and read-only data */ 63 .text : { 64 HEAD_TEXT 65 TEXT_TEXT 66 SCHED_TEXT 67 LOCK_TEXT 68 KPROBES_TEXT 69 IRQENTRY_TEXT 70 SOFTIRQENTRY_TEXT 71 *(.fixup) 72 *(.gnu.warning) 73 . = ALIGN(16); 74 *(.got) /* Global offset table */ 75 } :text = 0 76 _etext = .; /* End of text section */ 77 78 EXCEPTION_TABLE(16) 79 80 /* Exception table for data bus errors */ 81 __dbe_table : { 82 __start___dbe_table = .; 83 KEEP(*(__dbe_table)) 84 __stop___dbe_table = .; 85 } 86 87 _sdata = .; /* Start of data section */ 88 RO_DATA(4096) 89 90 /* writeable */ 91 .data : { /* Data */ 92 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */ 93 94 INIT_TASK_DATA(THREAD_SIZE) 95 NOSAVE_DATA 96 PAGE_ALIGNED_DATA(PAGE_SIZE) 97 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) 98 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) 99 DATA_DATA 100 CONSTRUCTORS 101 } 102 BUG_TABLE 103 _gp = . + 0x8000; 104 .lit8 : { 105 *(.lit8) 106 } 107 .lit4 : { 108 *(.lit4) 109 } 110 /* We want the small data sections together, so single-instruction offsets 111 can access them all, and initialized data all before uninitialized, so 112 we can shorten the on-disk segment size. */ 113 .sdata : { 114 *(.sdata) 115 } 116 _edata = .; /* End of data section */ 117 118 /* will be freed after init */ 119 . = ALIGN(PAGE_SIZE); /* Init code and data */ 120 __init_begin = .; 121 INIT_TEXT_SECTION(PAGE_SIZE) 122 INIT_DATA_SECTION(16) 123 124 . = ALIGN(4); 125 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) { 126 __mips_machines_start = .; 127 KEEP(*(.mips.machines.init)) 128 __mips_machines_end = .; 129 } 130 131 /* .exit.text is discarded at runtime, not link time, to deal with 132 * references from .rodata 133 */ 134 .exit.text : { 135 EXIT_TEXT 136 } 137 .exit.data : { 138 EXIT_DATA 139 } 140#ifdef CONFIG_SMP 141 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT) 142#endif 143 144 .rel.dyn : ALIGN(8) { 145 *(.rel) 146 *(.rel*) 147 } 148 149#ifdef CONFIG_MIPS_ELF_APPENDED_DTB 150 STRUCT_ALIGN(); 151 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) { 152 *(.appended_dtb) 153 KEEP(*(.appended_dtb)) 154 } 155#endif 156 157#ifdef CONFIG_RELOCATABLE 158 . = ALIGN(4); 159 160 .data.reloc : { 161 _relocation_start = .; 162 /* 163 * Space for relocation table 164 * This needs to be filled so that the 165 * relocs tool can overwrite the content. 166 * An invalid value is left at the start of the 167 * section to abort relocation if the table 168 * has not been filled in. 169 */ 170 LONG(0xFFFFFFFF); 171 FILL(0); 172 . += CONFIG_RELOCATION_TABLE_SIZE - 4; 173 _relocation_end = .; 174 } 175#endif 176 177#ifdef CONFIG_MIPS_RAW_APPENDED_DTB 178 .fill : { 179 FILL(0); 180 BYTE(0); 181 STRUCT_ALIGN(); 182 } 183 __appended_dtb = .; 184 /* leave space for appended DTB */ 185 . += 0x100000; 186#endif 187 /* 188 * Align to 64K in attempt to eliminate holes before the 189 * .bss..swapper_pg_dir section at the start of .bss. This 190 * also satisfies PAGE_SIZE alignment as the largest page size 191 * allowed is 64K. 192 */ 193 . = ALIGN(0x10000); 194 __init_end = .; 195 /* freed after init ends here */ 196 197 /* 198 * Force .bss to 64K alignment so that .bss..swapper_pg_dir 199 * gets that alignment. .sbss should be empty, so there will be 200 * no holes after __init_end. */ 201 BSS_SECTION(0, 0x10000, 8) 202 203 _end = . ; 204 205 /* These mark the ABI of the kernel for debuggers. */ 206 .mdebug.abi32 : { 207 KEEP(*(.mdebug.abi32)) 208 } 209 .mdebug.abi64 : { 210 KEEP(*(.mdebug.abi64)) 211 } 212 213 /* This is the MIPS specific mdebug section. */ 214 .mdebug : { 215 *(.mdebug) 216 } 217 218 STABS_DEBUG 219 DWARF_DEBUG 220 ELF_DETAILS 221 222 /* These must appear regardless of . */ 223 .gptab.sdata : { 224 *(.gptab.data) 225 *(.gptab.sdata) 226 } 227 .gptab.sbss : { 228 *(.gptab.bss) 229 *(.gptab.sbss) 230 } 231 232 /* Sections to be discarded */ 233 DISCARDS 234 /DISCARD/ : { 235 /* ABI crap starts here */ 236 *(.MIPS.abiflags) 237 *(.MIPS.options) 238 *(.gnu.attributes) 239 *(.options) 240 *(.pdr) 241 *(.reginfo) 242 } 243} 244