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