1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define PROVIDE32(x) PROVIDE(__unused__##x)
5 #define PROVIDE32(x) PROVIDE(x)
8 #define BSS_FIRST_SECTIONS *(.bss.prominit)
10 #define RO_EXCEPTION_TABLE_ALIGN 0
13 #include <asm-generic/vmlinux.lds.h>
14 #include <asm/cache.h>
15 #include <asm/thread_info.h>
17 #define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT)
22 text PT_LOAD FLAGS(7); /* RWX */
23 note PT_NOTE FLAGS(0);
27 OUTPUT_ARCH(powerpc:common64)
30 OUTPUT_ARCH(powerpc:common)
31 jiffies = jiffies_64 + 4;
38 * Text, read only data and other permanent read-only sections
46 * This needs to be in its own output section to avoid ld placing
47 * branch trampoline stubs randomly throughout the fixed sections,
48 * which it will do (even if the branch comes from another section)
49 * in order to optimize stub generation.
51 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
53 KEEP(*(.head.text.first_256B));
54 #ifdef CONFIG_PPC_BOOK3E
56 KEEP(*(.head.text.real_vectors));
57 *(.head.text.real_trampolines);
58 KEEP(*(.head.text.virt_vectors));
59 *(.head.text.virt_trampolines);
60 # if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
61 KEEP(*(.head.data.fwnmi_page));
64 #else /* !CONFIG_PPC64 */
73 * ALIGN(0) overrides the default output section alignment because
74 * this needs to start right after .head.text in order for fixed
75 * section placement to work.
77 .text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) {
78 #ifdef CONFIG_LD_HEAD_STUB_CATCH
79 KEEP(*(.linker_stub_catch));
84 .text : AT(ADDR(.text) - LOAD_OFFSET) {
87 /* careful! __ftr_alt_* sections need to be close to .text */
88 *(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text);
90 *(.tramp.ftrace.text);
100 * -Os builds call FP save/restore functions. The powerpc64
101 * linker generates those on demand in the .sfpr section.
102 * .sfpr gets placed at the beginning of a group of input
103 * sections, which can break start-of-text offset if it is
104 * included with the main text sections, so put it by itself.
115 #endif /* CONFIG_PPC32 */
119 . = ALIGN(PAGE_SIZE);
121 PROVIDE32 (etext = .);
128 __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
129 __start___stf_entry_barrier_fixup = .;
130 *(__stf_entry_barrier_fixup)
131 __stop___stf_entry_barrier_fixup = .;
135 __uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
136 __start___uaccess_flush_fixup = .;
137 *(__uaccess_flush_fixup)
138 __stop___uaccess_flush_fixup = .;
142 __entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
143 __start___entry_flush_fixup = .;
144 *(__entry_flush_fixup)
145 __stop___entry_flush_fixup = .;
149 __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
150 __start___stf_exit_barrier_fixup = .;
151 *(__stf_exit_barrier_fixup)
152 __stop___stf_exit_barrier_fixup = .;
156 __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
157 __start___rfi_flush_fixup = .;
159 __stop___rfi_flush_fixup = .;
161 #endif /* CONFIG_PPC64 */
163 #ifdef CONFIG_PPC_BARRIER_NOSPEC
165 __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
166 __start___barrier_nospec_fixup = .;
167 *(__barrier_nospec_fixup)
168 __stop___barrier_nospec_fixup = .;
170 #endif /* CONFIG_PPC_BARRIER_NOSPEC */
172 #ifdef CONFIG_PPC_FSL_BOOK3E
174 __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
175 __start__btb_flush_fixup = .;
177 __stop__btb_flush_fixup = .;
182 * Init sections discarded at runtime
184 . = ALIGN(STRICT_ALIGN_SIZE);
186 . = ALIGN(PAGE_SIZE);
187 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
192 *.init.text might be RO so we must ensure this section ends on
195 . = ALIGN(PAGE_SIZE);
198 *(.tramp.ftrace.init);
202 /* .exit.text is discarded at runtime, not link time,
203 * to deal with references from __bug_table
205 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
209 . = ALIGN(PAGE_SIZE);
211 INIT_DATA_SECTION(16)
214 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
215 __start___ftr_fixup = .;
217 __stop___ftr_fixup = .;
220 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
221 __start___mmu_ftr_fixup = .;
222 KEEP(*(__mmu_ftr_fixup))
223 __stop___mmu_ftr_fixup = .;
226 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
227 __start___lwsync_fixup = .;
228 KEEP(*(__lwsync_fixup))
229 __stop___lwsync_fixup = .;
233 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
234 __start___fw_ftr_fixup = .;
235 KEEP(*(__fw_ftr_fixup))
236 __stop___fw_ftr_fixup = .;
240 PERCPU_SECTION(L1_CACHE_BYTES)
243 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
244 __machine_desc_start = . ;
245 KEEP(*(.machine.desc))
246 __machine_desc_end = . ;
248 #ifdef CONFIG_RELOCATABLE
250 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
253 __dynamic_symtab = .;
257 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
258 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
263 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
264 .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
265 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
266 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
268 __rela_dyn_start = .;
272 /* .exit.data is discarded at runtime, not link time,
273 * to deal with references from .exit.text
275 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
279 /* freed after init ends here */
280 . = ALIGN(PAGE_SIZE);
284 * And now the various read/write data
287 . = ALIGN(PAGE_SIZE);
291 .data : AT(ADDR(.data) - LOAD_OFFSET) {
294 *(.data..Lubsan_data*)
295 *(.data..Lubsan_type*)
305 .data : AT(ADDR(.data) - LOAD_OFFSET) {
308 *(.data..Lubsan_data*)
309 *(.data..Lubsan_type*)
316 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
323 .got : AT(ADDR(.got) - LOAD_OFFSET) {
325 #ifndef CONFIG_RELOCATABLE
326 __prom_init_toc_start = .;
327 arch/powerpc/kernel/prom_init.o*(.toc .got)
328 __prom_init_toc_end = .;
335 /* The initial task and kernel stack */
336 INIT_TASK_DATA_SECTION(THREAD_ALIGN)
338 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
339 PAGE_ALIGNED_DATA(PAGE_SIZE)
342 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
343 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
346 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
347 READ_MOSTLY_DATA(L1_CACHE_BYTES)
350 . = ALIGN(PAGE_SIZE);
351 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
357 . = ALIGN(PAGE_SIZE);
359 PROVIDE32 (edata = .);
362 * And finally the bss
367 . = ALIGN(PAGE_SIZE);
378 *(.glink .iplt .plt .rela* .comment)