1/* SPDX-License-Identifier: GPL-2.0 */
2#include <asm/asm-offsets.h>
3#include <asm/thread_info.h>
4
5#define PAGE_SIZE _PAGE_SIZE
6
7/*
8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
9 * ensure that it has .bss alignment (64K).
10 */
11#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
12
13/* Cavium Octeon should not have a separate PT_NOTE Program Header. */
14#ifndef CONFIG_CAVIUM_OCTEON_SOC
15#define EMITS_PT_NOTE
16#endif
17
18#include <asm-generic/vmlinux.lds.h>
19
20#undef mips
21#define mips mips
22OUTPUT_ARCH(mips)
23ENTRY(kernel_entry)
24PHDRS {
25	text PT_LOAD FLAGS(7);	/* RWX */
26#ifndef CONFIG_CAVIUM_OCTEON_SOC
27	note PT_NOTE FLAGS(4);	/* R__ */
28#endif /* CAVIUM_OCTEON_SOC */
29}
30
31#ifdef CONFIG_32BIT
32	#ifdef CONFIG_CPU_LITTLE_ENDIAN
33		jiffies	 = jiffies_64;
34	#else
35		jiffies	 = jiffies_64 + 4;
36	#endif
37#else
38	jiffies	 = jiffies_64;
39#endif
40
41SECTIONS
42{
43#ifdef CONFIG_BOOT_ELF64
44	/* Read-only sections, merged into text segment: */
45	/* . = 0xc000000000000000; */
46
47	/* This is the value for an Origin kernel, taken from an IRIX kernel.  */
48	/* . = 0xc00000000001c000; */
49
50	/* Set the vaddr for the text segment to a value
51	 *   >= 0xa800 0000 0001 9000 if no symmon is going to configured
52	 *   >= 0xa800 0000 0030 0000 otherwise
53	 */
54
55	/* . = 0xa800000000300000; */
56	. = 0xffffffff80300000;
57#endif
58	. = LINKER_LOAD_ADDRESS;
59	/* read-only */
60	_text = .;	/* Text and read-only data */
61	.text : {
62		TEXT_TEXT
63		SCHED_TEXT
64		CPUIDLE_TEXT
65		LOCK_TEXT
66		KPROBES_TEXT
67		IRQENTRY_TEXT
68		SOFTIRQENTRY_TEXT
69		*(.text.*)
70		*(.fixup)
71		*(.gnu.warning)
72	} :text = 0
73	_etext = .;	/* End of text section */
74
75	EXCEPTION_TABLE(16)
76
77	/* Exception table for data bus errors */
78	__dbe_table : {
79		__start___dbe_table = .;
80		KEEP(*(__dbe_table))
81		__stop___dbe_table = .;
82	}
83
84	_sdata = .;			/* Start of data section */
85	RO_DATA(4096)
86
87	/* writeable */
88	.data : {	/* Data */
89		. = . + DATAOFFSET;		/* for CONFIG_MAPPED_KERNEL */
90
91		INIT_TASK_DATA(THREAD_SIZE)
92		NOSAVE_DATA
93		CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
94		READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
95		DATA_DATA
96		CONSTRUCTORS
97	}
98	BUG_TABLE
99	_gp = . + 0x8000;
100	.lit8 : {
101		*(.lit8)
102	}
103	.lit4 : {
104		*(.lit4)
105	}
106	/* We want the small data sections together, so single-instruction offsets
107	   can access them all, and initialized data all before uninitialized, so
108	   we can shorten the on-disk segment size.  */
109	.sdata : {
110		*(.sdata)
111	}
112	_edata =  .;			/* End of data section */
113
114	/* will be freed after init */
115	. = ALIGN(PAGE_SIZE);		/* Init code and data */
116	__init_begin = .;
117	INIT_TEXT_SECTION(PAGE_SIZE)
118	INIT_DATA_SECTION(16)
119
120	. = ALIGN(4);
121	.mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
122		__mips_machines_start = .;
123		KEEP(*(.mips.machines.init))
124		__mips_machines_end = .;
125	}
126
127	/* .exit.text is discarded at runtime, not link time, to deal with
128	 * references from .rodata
129	 */
130	.exit.text : {
131		EXIT_TEXT
132	}
133	.exit.data : {
134		EXIT_DATA
135	}
136#ifdef CONFIG_SMP
137	PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
138#endif
139
140#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
141	.appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
142		*(.appended_dtb)
143		KEEP(*(.appended_dtb))
144	}
145#endif
146
147#ifdef CONFIG_RELOCATABLE
148	. = ALIGN(4);
149
150	.data.reloc : {
151		_relocation_start = .;
152		/*
153		 * Space for relocation table
154		 * This needs to be filled so that the
155		 * relocs tool can overwrite the content.
156		 * An invalid value is left at the start of the
157		 * section to abort relocation if the table
158		 * has not been filled in.
159		 */
160		LONG(0xFFFFFFFF);
161		FILL(0);
162		. += CONFIG_RELOCATION_TABLE_SIZE - 4;
163		_relocation_end = .;
164	}
165#endif
166
167#ifdef CONFIG_MIPS_RAW_APPENDED_DTB
168	__appended_dtb = .;
169	/* leave space for appended DTB */
170	. += 0x100000;
171#endif
172	/*
173	 * Align to 64K in attempt to eliminate holes before the
174	 * .bss..swapper_pg_dir section at the start of .bss.  This
175	 * also satisfies PAGE_SIZE alignment as the largest page size
176	 * allowed is 64K.
177	 */
178	. = ALIGN(0x10000);
179	__init_end = .;
180	/* freed after init ends here */
181
182	/*
183	 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
184	 * gets that alignment.	 .sbss should be empty, so there will be
185	 * no holes after __init_end. */
186	BSS_SECTION(0, 0x10000, 8)
187
188	_end = . ;
189
190	/* These mark the ABI of the kernel for debuggers.  */
191	.mdebug.abi32 : {
192		KEEP(*(.mdebug.abi32))
193	}
194	.mdebug.abi64 : {
195		KEEP(*(.mdebug.abi64))
196	}
197
198	/* This is the MIPS specific mdebug section.  */
199	.mdebug : {
200		*(.mdebug)
201	}
202
203	STABS_DEBUG
204	DWARF_DEBUG
205	ELF_DETAILS
206
207	/* These must appear regardless of  .  */
208	.gptab.sdata : {
209		*(.gptab.data)
210		*(.gptab.sdata)
211	}
212	.gptab.sbss : {
213		*(.gptab.bss)
214		*(.gptab.sbss)
215	}
216
217	/* Sections to be discarded */
218	DISCARDS
219	/DISCARD/ : {
220		/* ABI crap starts here */
221		*(.MIPS.abiflags)
222		*(.MIPS.options)
223		*(.options)
224		*(.pdr)
225		*(.reginfo)
226		*(.eh_frame)
227	}
228}
229