1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* ld script to make ARM Linux kernel
3 * taken from the i386 version by Russell King
4 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
7 #ifdef CONFIG_XIP_KERNEL
8 #include "vmlinux-xip.lds.S"
11 #include <asm-generic/vmlinux.lds.h>
12 #include <asm/cache.h>
13 #include <asm/thread_info.h>
14 #include <asm/memory.h>
17 #include <asm/pgtable.h>
19 #include "vmlinux.lds.h"
27 jiffies = jiffies_64 + 4;
33 * XXX: The linker does not define how output sections are
34 * assigned to input sections when there are multiple statements
35 * matching the same input section name. There is no documented
38 * unwind exit sections must be discarded before the rest of the
39 * unwind sections get included.
43 #ifndef CONFIG_SMP_ON_UP
48 . = PAGE_OFFSET + TEXT_OFFSET;
54 #ifdef CONFIG_STRICT_KERNEL_RWX
55 . = ALIGN(1<<SECTION_SHIFT);
59 . = ALIGN(PMSAv8_MINALIGN);
61 .text : { /* Real text segment */
62 _stext = .; /* Text and read-only data */
66 #ifdef CONFIG_DEBUG_ALIGN_RODATA
67 . = ALIGN(1<<SECTION_SHIFT);
69 _etext = .; /* End of text section */
74 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
75 __start___ex_table = .;
76 ARM_MMU_KEEP(*(__ex_table))
77 __stop___ex_table = .;
80 #ifdef CONFIG_ARM_UNWIND
84 #ifdef CONFIG_STRICT_KERNEL_RWX
85 . = ALIGN(1<<SECTION_SHIFT);
94 ARM_EXIT_KEEP(EXIT_TEXT)
97 ARM_CPU_DISCARD(PROC_INFO)
100 __arch_info_begin = .;
105 __tagtable_begin = .;
109 #ifdef CONFIG_SMP_ON_UP
117 __pv_table_begin = .;
122 INIT_DATA_SECTION(16)
125 ARM_EXIT_KEEP(EXIT_DATA)
129 PERCPU_SECTION(L1_CACHE_BYTES)
132 #ifdef CONFIG_HAVE_TCM
136 #ifdef CONFIG_STRICT_KERNEL_RWX
137 . = ALIGN(1<<SECTION_SHIFT);
139 . = ALIGN(THREAD_SIZE);
144 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
148 #ifdef CONFIG_ARM_MPU
149 . = ALIGN(PMSAv8_MINALIGN);
156 #ifdef CONFIG_STRICT_KERNEL_RWX
158 * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
159 * be the first section-aligned location after __start_rodata. Otherwise,
160 * it will be equal to __start_rodata.
162 __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
166 * These must never be empty
167 * If you have to comment these two assert statements out, your
168 * binutils is too old (for other reasons as well)
170 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
171 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
174 * The HYP init code can't be more than a page long,
175 * and should not cross a page boundary.
176 * The above comment applies as well.
178 ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE,
179 "HYP init code too big or misaligned")
181 #endif /* CONFIG_XIP_KERNEL */