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