1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* ld script to make s390 Linux kernel
6 #include <asm/thread_info.h>
8 #include <asm/ftrace.lds.h>
11 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
12 * make sure it has 16k alignment.
14 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir) \
15 *(.bss..invalid_pg_dir)
17 /* Handle ro_after_init data on our own. */
18 #define RO_AFTER_INIT_DATA
22 #include <asm-generic/vmlinux.lds.h>
23 #include <asm/vmlinux.lds.h>
25 OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
26 OUTPUT_ARCH(s390:64-bit)
27 ENTRY(startup_continue)
31 text PT_LOAD FLAGS(5); /* R_E */
32 data PT_LOAD FLAGS(7); /* RWE */
33 note PT_NOTE FLAGS(0); /* ___ */
40 _stext = .; /* Start of text section */
41 _text = .; /* Text and read-only data */
50 FTRACE_HOTPATCH_TRAMPOLINES_TEXT
55 _etext = .; /* End of text section */
61 _sdata = .; /* Start of data section */
64 __start_ro_after_init = .;
65 .data..ro_after_init : {
66 *(.data..ro_after_init)
71 __end_ro_after_init = .;
73 RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
78 _start_amode31_refs = .;
80 _end_amode31_refs = .;
83 _edata = .; /* End of data section */
85 /* will be freed after init */
86 . = ALIGN(PAGE_SIZE); /* Init code and data */
90 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
98 * .exit.text is discarded at runtime, not link time,
99 * to deal with references from __bug_table
110 * struct alt_inst entries. From the header (alternative.h):
111 * "Alternative instructions for different CPU types or capabilities"
112 * Think locking instructions on spinlocks.
113 * Note, that it is a part of __init region.
117 __alt_instructions = .;
119 __alt_instructions_end = .;
123 * And here are the replacement instructions. The linker sticks
124 * them as binary blobs. The .altinstructions has enough data to
125 * get the address and the length of them to patch the kernel safely.
126 * Note, that it is a part of __init region.
128 .altinstr_replacement : {
129 *(.altinstr_replacement)
133 * Table with the patch locations to undo expolines
135 .nospec_call_table : {
136 __nospec_call_start = . ;
138 __nospec_call_end = . ;
140 .nospec_return_table : {
141 __nospec_return_start = . ;
143 __nospec_return_end = . ;
149 * .amode31 section for code, data, ex_table that need to stay
150 * below 2 GB, even when the kernel is relocated above 2 GB.
152 . = ALIGN(PAGE_SIZE);
157 *(.amode31.text.*_indirect_*)
158 . = ALIGN(PAGE_SIZE);
162 .amode31.ex_table : {
163 _start_amode31_ex_table = .;
164 KEEP(*(.amode31.ex_table))
165 _stop_amode31_ex_table = .;
167 . = ALIGN(PAGE_SIZE);
171 . = ALIGN(PAGE_SIZE);
174 /* early.c uses stsi, which requires page aligned data. */
175 . = ALIGN(PAGE_SIZE);
176 INIT_DATA_SECTION(0x100)
178 PERCPU_SECTION(0x100)
185 .rela.dyn ALIGN(8) : {
186 __rela_dyn_start = .;
191 . = ALIGN(PAGE_SIZE);
192 __init_end = .; /* freed after init ends here */
194 BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
199 * uncompressed image info used by the decompressor
200 * it should match struct vmlinux_info
202 .vmlinux.info 0 (INFO) : {
203 QUAD(_stext) /* default_lma */
204 QUAD(startup_continue) /* entry */
205 QUAD(__bss_start - _stext) /* image_size */
206 QUAD(__bss_stop - __bss_start) /* bss_size */
207 QUAD(__boot_data_start) /* bootdata_off */
208 QUAD(__boot_data_end - __boot_data_start) /* bootdata_size */
209 QUAD(__boot_data_preserved_start) /* bootdata_preserved_off */
210 QUAD(__boot_data_preserved_end -
211 __boot_data_preserved_start) /* bootdata_preserved_size */
212 QUAD(__dynsym_start) /* dynsym_start */
213 QUAD(__rela_dyn_start) /* rela_dyn_start */
214 QUAD(__rela_dyn_end) /* rela_dyn_end */
215 QUAD(_eamode31 - _samode31) /* amode31_size */
218 /* Debugging sections. */
223 /* Sections to be discarded */