336fe1d6c2
A lot of randconfig builds end up not selecting any machine type at all. This is generally fine for the purpose of compile testing, but of course it means that the kernel is not usable on actual hardware, and it causes a warning about this fact. As most of the build bots now force-enable CONFIG_COMPILE_TEST for randconfig builds, use that as a guard to control whether we warn on this type of broken configuration. We could do the same for the missing-cpu-type warning, but those configurations fail to build much earlier. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
182 lines
3.4 KiB
ArmAsm
182 lines
3.4 KiB
ArmAsm
/* 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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. = KERNEL_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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#ifndef CONFIG_COMPILE_TEST
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ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
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#endif
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#endif /* CONFIG_XIP_KERNEL */
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