1/* SPDX-License-Identifier: GPL-2.0 */
  2#include <asm-generic/vmlinux.lds.h>
  3
  4#ifdef CONFIG_HOTPLUG_CPU
  5#define ARM_CPU_DISCARD(x)
  6#define ARM_CPU_KEEP(x)		x
  7#else
  8#define ARM_CPU_DISCARD(x)	x
  9#define ARM_CPU_KEEP(x)
 10#endif
 11
 12#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
 13	defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
 14#define ARM_EXIT_KEEP(x)	x
 15#define ARM_EXIT_DISCARD(x)
 16#else
 17#define ARM_EXIT_KEEP(x)
 18#define ARM_EXIT_DISCARD(x)	x
 19#endif
 20
 21#ifdef CONFIG_MMU
 22#define ARM_MMU_KEEP(x)		x
 23#define ARM_MMU_DISCARD(x)
 24#else
 25#define ARM_MMU_KEEP(x)
 26#define ARM_MMU_DISCARD(x)	x
 27#endif
 28
 29/*
 30 * ld.lld does not support NOCROSSREFS:
 31 * https://github.com/ClangBuiltLinux/linux/issues/1609
 32 */
 33#ifdef CONFIG_LD_IS_LLD
 34#define NOCROSSREFS
 35#endif
 36
 37/* Set start/end symbol names to the LMA for the section */
 38#define ARM_LMA(sym, section)						\
 39	sym##_start = LOADADDR(section);				\
 40	sym##_end = LOADADDR(section) + SIZEOF(section)
 41
 42#define PROC_INFO							\
 43		. = ALIGN(4);						\
 44		__proc_info_begin = .;					\
 45		KEEP(*(.proc.info.init))				\
 46		__proc_info_end = .;
 47
 48#define IDMAP_TEXT							\
 49		ALIGN_FUNCTION();					\
 50		__idmap_text_start = .;					\
 51		*(.idmap.text)						\
 52		__idmap_text_end = .;					\
 53
 54#define ARM_DISCARD							\
 55		*(.ARM.exidx.exit.text)					\
 56		*(.ARM.extab.exit.text)					\
 57		*(.ARM.exidx.text.exit)					\
 58		*(.ARM.extab.text.exit)					\
 59		ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))		\
 60		ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))		\
 61		ARM_EXIT_DISCARD(EXIT_TEXT)				\
 62		ARM_EXIT_DISCARD(EXIT_DATA)				\
 63		EXIT_CALL						\
 64		ARM_MMU_DISCARD(*(.text.fixup))				\
 65		ARM_MMU_DISCARD(*(__ex_table))				\
 66		COMMON_DISCARDS
 67
 68/*
 69 * Sections that should stay zero sized, which is safer to explicitly
 70 * check instead of blindly discarding.
 71 */
 72#define ARM_ASSERTS							\
 73	.plt : {							\
 74		*(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt)		\
 75	}								\
 76	ASSERT(SIZEOF(.plt) == 0,					\
 77	       "Unexpected run-time procedure linkages detected!")
 78
 79#define ARM_DETAILS							\
 80		ELF_DETAILS						\
 81		.ARM.attributes 0 : { *(.ARM.attributes) }
 82
 83#define ARM_STUBS_TEXT							\
 84		*(.gnu.warning)						\
 85		*(.glue_7)						\
 86		*(.glue_7t)						\
 87		*(.vfp11_veneer)                                        \
 88		*(.v4_bx)
 89
 90#define ARM_TEXT							\
 91		IDMAP_TEXT						\
 92		__entry_text_start = .;					\
 93		*(.entry.text)						\
 94		__entry_text_end = .;					\
 95		IRQENTRY_TEXT						\
 96		SOFTIRQENTRY_TEXT					\
 97		TEXT_TEXT						\
 98		SCHED_TEXT						\
 99		LOCK_TEXT						\
100		KPROBES_TEXT						\
101		ARM_STUBS_TEXT						\
102		. = ALIGN(4);						\
103		*(.got)			/* Global offset table */	\
104		ARM_CPU_KEEP(PROC_INFO)
105
106/* Stack unwinding tables */
107#define ARM_UNWIND_SECTIONS						\
108	. = ALIGN(8);							\
109	.ARM.unwind_idx : {						\
110		__start_unwind_idx = .;					\
111		*(.ARM.exidx*)						\
112		__stop_unwind_idx = .;					\
113	}								\
114	.ARM.unwind_tab : {						\
115		__start_unwind_tab = .;					\
116		*(.ARM.extab*)						\
117		__stop_unwind_tab = .;					\
118	}
119
120/*
121 * The vectors and stubs are relocatable code, and the
122 * only thing that matters is their relative offsets
123 */
124#define ARM_VECTORS							\
125	__vectors_lma = .;						\
126	OVERLAY 0xffff0000 : NOCROSSREFS AT(__vectors_lma) {		\
127		.vectors {						\
128			*(.vectors)					\
129		}							\
130		.vectors.bhb.loop8 {					\
131			*(.vectors.bhb.loop8)				\
132		}							\
133		.vectors.bhb.bpiall {					\
134			*(.vectors.bhb.bpiall)				\
135		}							\
136	}								\
137	ARM_LMA(__vectors, .vectors);					\
138	ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8);		\
139	ARM_LMA(__vectors_bhb_bpiall, .vectors.bhb.bpiall);		\
140	. = __vectors_lma + SIZEOF(.vectors) +				\
141		SIZEOF(.vectors.bhb.loop8) +				\
142		SIZEOF(.vectors.bhb.bpiall);				\
143									\
144	__stubs_lma = .;						\
145	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) {		\
146		*(.stubs)						\
147	}								\
148	ARM_LMA(__stubs, .stubs);					\
149	. = __stubs_lma + SIZEOF(.stubs);				\
150									\
151	PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
152
153#define ARM_TCM								\
154	__itcm_start = ALIGN(4);					\
155	.text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) {	\
156		__sitcm_text = .;					\
157		*(.tcm.text)						\
158		*(.tcm.rodata)						\
159		. = ALIGN(4);						\
160		__eitcm_text = .;					\
161	}								\
162	. = __itcm_start + SIZEOF(.text_itcm);				\
163									\
164	__dtcm_start = .;						\
165	.data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) {	\
166		__sdtcm_data = .;					\
167		*(.tcm.data)						\
168		. = ALIGN(4);						\
169		__edtcm_data = .;					\
170	}								\
171	. = __dtcm_start + SIZEOF(.data_dtcm);