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
86 #ifdef CONFIG_STRICT_KERNEL_RWX
87 . = ALIGN(1<<SECTION_SHIFT);
96 ARM_EXIT_KEEP(EXIT_TEXT)
99 ARM_CPU_DISCARD(PROC_INFO)
102 __arch_info_begin = .;
107 __tagtable_begin = .;
111 #ifdef CONFIG_SMP_ON_UP
119 __pv_table_begin = .;
124 INIT_DATA_SECTION(16)
127 ARM_EXIT_KEEP(EXIT_DATA)
131 PERCPU_SECTION(L1_CACHE_BYTES)
134 #ifdef CONFIG_HAVE_TCM
138 #ifdef CONFIG_STRICT_KERNEL_RWX
139 . = ALIGN(1<<SECTION_SHIFT);
141 . = ALIGN(THREAD_SIZE);
146 RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
150 #ifdef CONFIG_ARM_MPU
151 . = ALIGN(PMSAv8_MINALIGN);
158 #ifdef CONFIG_STRICT_KERNEL_RWX
160 * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
161 * be the first section-aligned location after __start_rodata. Otherwise,
162 * it will be equal to __start_rodata.
164 __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
168 * These must never be empty
169 * If you have to comment these two assert statements out, your
170 * binutils is too old (for other reasons as well)
172 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
173 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
176 * The HYP init code can't be more than a page long,
177 * and should not cross a page boundary.
178 * The above comment applies as well.
180 ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE,
181 "HYP init code too big or misaligned")
183 #endif /* CONFIG_XIP_KERNEL */