1/*
2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
3 * Copyright (C) 2008-2009 PetaLogix
4 * Copyright (C) 2006 Atmark Techno, Inc.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
12OUTPUT_ARCH(microblaze)
13ENTRY(_start)
14
15#include <asm/page.h>
16#include <asm-generic/vmlinux.lds.h>
17#include <asm/thread_info.h>
18
19jiffies = jiffies_64 + 4;
20
21SECTIONS {
22	. = CONFIG_KERNEL_START;
23	_start = CONFIG_KERNEL_BASE_ADDR;
24	.text : AT(ADDR(.text) - LOAD_OFFSET) {
25		_text = . ;
26		_stext = . ;
27		*(.text .text.*)
28		*(.fixup)
29		EXIT_TEXT
30		EXIT_CALL
31		SCHED_TEXT
32		LOCK_TEXT
33		KPROBES_TEXT
34		IRQENTRY_TEXT
35		. = ALIGN (4) ;
36		_etext = . ;
37	}
38
39	. = ALIGN (4) ;
40	__fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) {
41		_fdt_start = . ;		/* place for fdt blob */
42		*(__fdt_blob) ;			/* Any link-placed DTB */
43	        . = _fdt_start + 0x4000;	/* Pad up to 16kbyte */
44		_fdt_end = . ;
45	}
46
47	. = ALIGN(16);
48	RODATA
49	EXCEPTION_TABLE(16)
50
51	/*
52	 * sdata2 section can go anywhere, but must be word aligned
53	 * and SDA2_BASE must point to the middle of it
54	 */
55	.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
56		_ssrw = .;
57		. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
58		*(.sdata2)
59	. = ALIGN(8);
60	_essrw = .;
61	_ssrw_size = _essrw - _ssrw;
62	_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
63	}
64
65	_sdata = . ;
66	RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
67	_edata = . ;
68
69	/* Reserve some low RAM for r0 based memory references */
70	. = ALIGN(0x4) ;
71	r0_ram = . ;
72	. = . +  4096;	/* a page should be enough */
73
74	/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
75	. = ALIGN(8);
76	.sdata : AT(ADDR(.sdata) - LOAD_OFFSET) {
77		_ssro = .;
78		*(.sdata)
79	}
80
81	.sbss :	AT(ADDR(.sbss) - LOAD_OFFSET) {
82		_ssbss = .;
83		*(.sbss)
84		_esbss = .;
85		_essro = .;
86		_ssro_size = _essro - _ssro ;
87		_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
88	}
89
90	. = ALIGN(PAGE_SIZE);
91	__init_begin = .;
92
93	INIT_TEXT_SECTION(PAGE_SIZE)
94
95	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
96		INIT_DATA
97	}
98
99	. = ALIGN(4);
100	.init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) {
101		__ivt_start = .;
102		*(.init.ivt)
103		__ivt_end = .;
104	}
105
106	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
107		INIT_SETUP(0)
108	}
109
110	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) {
111		INIT_CALLS
112	}
113
114	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
115		CON_INITCALL
116	}
117
118	SECURITY_INIT
119
120	__init_end_before_initramfs = .;
121
122	.init.ramfs ALIGN(4096) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
123		__initramfs_start = .;
124		*(.init.ramfs)
125		__initramfs_end = .;
126		. = ALIGN(4);
127		LONG(0);
128/*
129 * FIXME this can break initramfs for MMU.
130 * Pad init.ramfs up to page boundary,
131 * so that __init_end == __bss_start. This will make image.elf
132 * consistent with the image.bin
133 */
134		/* . = ALIGN(4096); */
135	}
136	__init_end = .;
137
138	.bss ALIGN (4096) : AT(ADDR(.bss) - LOAD_OFFSET) {
139		/* page aligned when MMU used */
140		__bss_start = . ;
141			*(.bss*)
142			*(COMMON)
143		. = ALIGN (4) ;
144		__bss_stop = . ;
145		_ebss = . ;
146	}
147	. = ALIGN(4096);
148	_end = .;
149
150	DISCARDS
151}
152