/* SPDX-License-Identifier: GPL-2.0 */ /* ld script to make ARM Linux kernel * taken from the i386 version by Russell King * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> */ #ifdef CONFIG_XIP_KERNEL #include "vmlinux-xip.lds.S" #else #include <linux/pgtable.h> #include <asm/vmlinux.lds.h> #include <asm/cache.h> #include <asm/thread_info.h> #include <asm/memory.h> #include <asm/mpu.h> #include <asm/page.h> OUTPUT_ARCH(arm) ENTRY(stext) #ifndef __ARMEB__ jiffies = jiffies_64; #else jiffies = jiffies_64 + 4; #endif SECTIONS { /* * XXX: The linker does not define how output sections are * assigned to input sections when there are multiple statements * matching the same input section name. There is no documented * order of matching. * * unwind exit sections must be discarded before the rest of the * unwind sections get included. */ /DISCARD/ : { ARM_DISCARD #ifndef CONFIG_SMP_ON_UP *(.alt.smp.init) #endif #ifndef CONFIG_ARM_UNWIND *(.ARM.exidx) *(.ARM.exidx.*) *(.ARM.extab) *(.ARM.extab.*) #endif } . = KERNEL_OFFSET + TEXT_OFFSET; .head.text : { _text = .; HEAD_TEXT } #ifdef CONFIG_STRICT_KERNEL_RWX . = ALIGN(1<<SECTION_SHIFT); #endif #ifdef CONFIG_ARM_MPU . = ALIGN(PMSAv8_MINALIGN); #endif .text : { /* Real text segment */ _stext = .; /* Text and read-only data */ ARM_TEXT } #ifdef CONFIG_DEBUG_ALIGN_RODATA . = ALIGN(1<<SECTION_SHIFT); #endif _etext = .; /* End of text section */ RO_DATA(PAGE_SIZE) . = ALIGN(4); __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { __start___ex_table = .; ARM_MMU_KEEP(*(__ex_table)) __stop___ex_table = .; } #ifdef CONFIG_ARM_UNWIND ARM_UNWIND_SECTIONS #endif #ifdef CONFIG_STRICT_KERNEL_RWX . = ALIGN(1<<SECTION_SHIFT); #else . = ALIGN(PAGE_SIZE); #endif __init_begin = .; ARM_VECTORS INIT_TEXT_SECTION(8) .exit.text : { ARM_EXIT_KEEP(EXIT_TEXT) } .init.proc.info : { ARM_CPU_DISCARD(PROC_INFO) } .init.arch.info : { __arch_info_begin = .; *(.arch.info.init) __arch_info_end = .; } .init.tagtable : { __tagtable_begin = .; *(.taglist.init) __tagtable_end = .; } #ifdef CONFIG_SMP_ON_UP .init.smpalt : { __smpalt_begin = .; *(.alt.smp.init) __smpalt_end = .; } #endif .init.pv_table : { __pv_table_begin = .; *(.pv_table) __pv_table_end = .; } INIT_DATA_SECTION(16) .exit.data : { ARM_EXIT_KEEP(EXIT_DATA) } #ifdef CONFIG_SMP PERCPU_SECTION(L1_CACHE_BYTES) #endif #ifdef CONFIG_HAVE_TCM ARM_TCM #endif #ifdef CONFIG_STRICT_KERNEL_RWX . = ALIGN(1<<SECTION_SHIFT); #else . = ALIGN(THREAD_SIZE); #endif __init_end = .; _sdata = .; RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) _edata = .; BSS_SECTION(0, 0, 0) #ifdef CONFIG_ARM_MPU . = ALIGN(PMSAv8_MINALIGN); #endif _end = .; STABS_DEBUG DWARF_DEBUG ARM_DETAILS ARM_ASSERTS } #ifdef CONFIG_STRICT_KERNEL_RWX /* * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will * be the first section-aligned location after __start_rodata. Otherwise, * it will be equal to __start_rodata. */ __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT); #endif /* * These must never be empty * If you have to comment these two assert statements out, your * binutils is too old (for other reasons as well) */ ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support") #ifndef CONFIG_COMPILE_TEST ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") #endif #endif /* CONFIG_XIP_KERNEL */