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
11 #define RUNTIME_DISCARD_EXIT
13 #define SOFT_MASK_TABLE(align) \
15 __soft_mask_table : AT(ADDR(__soft_mask_table) - LOAD_OFFSET) { \
16 __start___soft_mask_table = .; \
17 KEEP(*(__soft_mask_table)) \
18 __stop___soft_mask_table = .; \
21 #define RESTART_TABLE(align) \
23 __restart_table : AT(ADDR(__restart_table) - LOAD_OFFSET) { \
24 __start___restart_table = .; \
25 KEEP(*(__restart_table)) \
26 __stop___restart_table = .; \
30 #include <asm-generic/vmlinux.lds.h>
31 #include <asm/cache.h>
32 #include <asm/thread_info.h>
34 #define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT)
36 #if STRICT_ALIGN_SIZE < PAGE_SIZE
37 #error "CONFIG_DATA_SHIFT must be >= PAGE_SHIFT"
43 text PT_LOAD FLAGS(7); /* RWX */
44 note PT_NOTE FLAGS(0);
48 OUTPUT_ARCH(powerpc:common64)
51 OUTPUT_ARCH(powerpc:common)
52 jiffies = jiffies_64 + 4;
59 * Text, read only data and other permanent read-only sections
67 * This needs to be in its own output section to avoid ld placing
68 * branch trampoline stubs randomly throughout the fixed sections,
69 * which it will do (even if the branch comes from another section)
70 * in order to optimize stub generation.
72 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
74 KEEP(*(.head.text.first_256B));
75 #ifdef CONFIG_PPC_BOOK3E_64
77 KEEP(*(.head.text.real_vectors));
78 *(.head.text.real_trampolines);
79 KEEP(*(.head.text.virt_vectors));
80 *(.head.text.virt_trampolines);
81 # if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
82 KEEP(*(.head.data.fwnmi_page));
85 #else /* !CONFIG_PPC64 */
94 * ALIGN(0) overrides the default output section alignment because
95 * this needs to start right after .head.text in order for fixed
96 * section placement to work.
98 .text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) {
99 #ifdef CONFIG_LD_HEAD_STUB_CATCH
100 KEEP(*(.linker_stub_catch));
105 .text : AT(ADDR(.text) - LOAD_OFFSET) {
108 /* careful! __ftr_alt_* sections need to be close to .text */
109 *(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text);
111 *(.tramp.ftrace.text);
120 * -Os builds call FP save/restore functions. The powerpc64
121 * linker generates those on demand in the .sfpr section.
122 * .sfpr gets placed at the beginning of a group of input
123 * sections, which can break start-of-text offset if it is
124 * included with the main text sections, so put it by itself.
127 *(.text.asan.* .text.tsan.*)
132 . = ALIGN(PAGE_SIZE);
134 PROVIDE32 (etext = .);
140 .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
145 .data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
146 *(.data.rel.ro .data.rel.ro.*)
149 .branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
154 .got1 : AT(ADDR(.got1) - LOAD_OFFSET) {
157 .got2 : AT(ADDR(.got2) - LOAD_OFFSET) {
162 .got : AT(ADDR(.got) - LOAD_OFFSET) {
166 .plt : AT(ADDR(.plt) - LOAD_OFFSET) {
167 /* XXX: is .plt (and .got.plt) required? */
171 #else /* CONFIG_PPC32 */
172 #ifndef CONFIG_PPC_KERNEL_PCREL
173 .toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) {
178 .got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
179 #ifdef CONFIG_PPC_KERNEL_PCREL
189 #ifdef CONFIG_PPC64_ELF_ABI_V1
190 .opd : AT(ADDR(.opd) - LOAD_OFFSET) {
198 __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
199 __start___stf_entry_barrier_fixup = .;
200 *(__stf_entry_barrier_fixup)
201 __stop___stf_entry_barrier_fixup = .;
205 __uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
206 __start___uaccess_flush_fixup = .;
207 *(__uaccess_flush_fixup)
208 __stop___uaccess_flush_fixup = .;
212 __entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
213 __start___entry_flush_fixup = .;
214 *(__entry_flush_fixup)
215 __stop___entry_flush_fixup = .;
219 __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
220 __start___scv_entry_flush_fixup = .;
221 *(__scv_entry_flush_fixup)
222 __stop___scv_entry_flush_fixup = .;
226 __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
227 __start___stf_exit_barrier_fixup = .;
228 *(__stf_exit_barrier_fixup)
229 __stop___stf_exit_barrier_fixup = .;
233 __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
234 __start___rfi_flush_fixup = .;
236 __stop___rfi_flush_fixup = .;
238 #endif /* CONFIG_PPC32 */
240 #ifdef CONFIG_PPC_BARRIER_NOSPEC
242 __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
243 __start___barrier_nospec_fixup = .;
244 *(__barrier_nospec_fixup)
245 __stop___barrier_nospec_fixup = .;
247 #endif /* CONFIG_PPC_BARRIER_NOSPEC */
249 #ifdef CONFIG_PPC_E500
251 __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
252 __start__btb_flush_fixup = .;
254 __stop__btb_flush_fixup = .;
259 * Various code relies on __init_begin being at the strict RWX boundary.
261 . = ALIGN(STRICT_ALIGN_SIZE);
267 * Init sections discarded at runtime
269 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
274 *.init.text might be RO so we must ensure this section ends on
277 . = ALIGN(PAGE_SIZE);
280 *(.tramp.ftrace.init);
284 /* .exit.text is discarded at runtime, not link time,
285 * to deal with references from __bug_table
287 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
291 . = ALIGN(PAGE_SIZE);
293 INIT_DATA_SECTION(16)
296 __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
297 __start___ftr_fixup = .;
299 __stop___ftr_fixup = .;
302 __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
303 __start___mmu_ftr_fixup = .;
304 KEEP(*(__mmu_ftr_fixup))
305 __stop___mmu_ftr_fixup = .;
308 __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
309 __start___lwsync_fixup = .;
310 KEEP(*(__lwsync_fixup))
311 __stop___lwsync_fixup = .;
315 __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
316 __start___fw_ftr_fixup = .;
317 KEEP(*(__fw_ftr_fixup))
318 __stop___fw_ftr_fixup = .;
322 PERCPU_SECTION(L1_CACHE_BYTES)
325 .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
326 __machine_desc_start = . ;
327 KEEP(*(.machine.desc))
328 __machine_desc_end = . ;
330 #ifdef CONFIG_RELOCATABLE
332 .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
334 __dynamic_symtab = .;
337 .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
338 .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
343 .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
344 .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
345 .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
346 .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
348 __rela_dyn_start = .;
352 /* .exit.data is discarded at runtime, not link time,
353 * to deal with references from .exit.text
355 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
359 /* freed after init ends here */
360 . = ALIGN(PAGE_SIZE);
364 * And now the various read/write data
367 . = ALIGN(PAGE_SIZE);
370 .data : AT(ADDR(.data) - LOAD_OFFSET) {
378 /* The initial task and kernel stack */
379 INIT_TASK_DATA_SECTION(THREAD_ALIGN)
381 .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
382 PAGE_ALIGNED_DATA(PAGE_SIZE)
385 .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
386 CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
389 .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
390 READ_MOSTLY_DATA(L1_CACHE_BYTES)
393 . = ALIGN(PAGE_SIZE);
394 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
400 . = ALIGN(PAGE_SIZE);
402 PROVIDE32 (edata = .);
405 * And finally the bss
410 . = ALIGN(PAGE_SIZE);
424 #ifndef CONFIG_RELOCATABLE