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 __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
150 __start___scv_entry_flush_fixup = .;
151 *(__scv_entry_flush_fixup)
152 __stop___scv_entry_flush_fixup = .;
156 __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
157 __start___stf_exit_barrier_fixup = .;
158 *(__stf_exit_barrier_fixup)
159 __stop___stf_exit_barrier_fixup = .;
163 __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
164 __start___rfi_flush_fixup = .;
166 __stop___rfi_flush_fixup = .;
168 #endif /* CONFIG_PPC64 */
170 #ifdef CONFIG_PPC_BARRIER_NOSPEC
172 __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
173 __start___barrier_nospec_fixup = .;
174 *(__barrier_nospec_fixup)
175 __stop___barrier_nospec_fixup = .;
177 #endif /* CONFIG_PPC_BARRIER_NOSPEC */
179 #ifdef CONFIG_PPC_FSL_BOOK3E
181 __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
182 __start__btb_flush_fixup = .;
184 __stop__btb_flush_fixup = .;
189 * Init sections discarded at runtime
191 . = ALIGN(STRICT_ALIGN_SIZE);
193 . = ALIGN(PAGE_SIZE);
194 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
199 *.init.text might be RO so we must ensure this section ends on
202 . = ALIGN(PAGE_SIZE);
205 *(.tramp.ftrace.init);
209 /* .exit.text is discarded at runtime, not link time,
210 * to deal with references from __bug_table
212 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
216 . = ALIGN(PAGE_SIZE);
218 INIT_DATA_SECTION(16)
221 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
222 __start___ftr_fixup = .;
224 __stop___ftr_fixup = .;
227 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
228 __start___mmu_ftr_fixup = .;
229 KEEP(*(__mmu_ftr_fixup))
230 __stop___mmu_ftr_fixup = .;
233 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
234 __start___lwsync_fixup = .;
235 KEEP(*(__lwsync_fixup))
236 __stop___lwsync_fixup = .;
240 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
241 __start___fw_ftr_fixup = .;
242 KEEP(*(__fw_ftr_fixup))
243 __stop___fw_ftr_fixup = .;
247 PERCPU_SECTION(L1_CACHE_BYTES)
250 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
251 __machine_desc_start = . ;
252 KEEP(*(.machine.desc))
253 __machine_desc_end = . ;
255 #ifdef CONFIG_RELOCATABLE
257 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
260 __dynamic_symtab = .;
264 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
265 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
270 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
271 .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
272 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
273 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
275 __rela_dyn_start = .;
279 /* .exit.data is discarded at runtime, not link time,
280 * to deal with references from .exit.text
282 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
286 /* freed after init ends here */
287 . = ALIGN(PAGE_SIZE);
291 * And now the various read/write data
294 . = ALIGN(PAGE_SIZE);
298 .data : AT(ADDR(.data) - LOAD_OFFSET) {
301 *(.data..Lubsan_data*)
302 *(.data..Lubsan_type*)
312 .data : AT(ADDR(.data) - LOAD_OFFSET) {
315 *(.data..Lubsan_data*)
316 *(.data..Lubsan_type*)
323 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
330 .got : AT(ADDR(.got) - LOAD_OFFSET) {
332 #ifndef CONFIG_RELOCATABLE
333 __prom_init_toc_start = .;
334 arch/powerpc/kernel/prom_init.o*(.toc .got)
335 __prom_init_toc_end = .;
342 /* The initial task and kernel stack */
343 INIT_TASK_DATA_SECTION(THREAD_ALIGN)
345 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
346 PAGE_ALIGNED_DATA(PAGE_SIZE)
349 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
350 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
353 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
354 READ_MOSTLY_DATA(L1_CACHE_BYTES)
357 . = ALIGN(PAGE_SIZE);
358 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
364 . = ALIGN(PAGE_SIZE);
366 PROVIDE32 (edata = .);
369 * And finally the bss
374 . = ALIGN(PAGE_SIZE);
385 *(.glink .iplt .plt .rela* .comment)