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		. = ALIGN (4) ;
35		_etext = . ;
36	}
37
38	. = ALIGN (4) ;
39	__fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) {
40		_fdt_start = . ;		/* place for fdt blob */
41		*(__fdt_blob) ;			/* Any link-placed DTB */
42	        . = _fdt_start + 0x4000;	/* Pad up to 16kbyte */
43		_fdt_end = . ;
44	}
45
46	. = ALIGN(16);
47	RODATA
48	EXCEPTION_TABLE(16)
49
50	/*
51	 * sdata2 section can go anywhere, but must be word aligned
52	 * and SDA2_BASE must point to the middle of it
53	 */
54	.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
55		_ssrw = .;
56		. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
57		*(.sdata2)
58	. = ALIGN(8);
59	_essrw = .;
60	_ssrw_size = _essrw - _ssrw;
61	_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
62	}
63
64	_sdata = . ;
65	RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
66	_edata = . ;
67
68	/* Reserve some low RAM for r0 based memory references */
69	. = ALIGN(0x4) ;
70	r0_ram = . ;
71	. = . +  4096;	/* a page should be enough */
72
73	/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
74	. = ALIGN(8);
75	.sdata : AT(ADDR(.sdata) - LOAD_OFFSET) {
76		_ssro = .;
77		*(.sdata)
78	}
79
80	.sbss :	AT(ADDR(.sbss) - LOAD_OFFSET) {
81		_ssbss = .;
82		*(.sbss)
83		_esbss = .;
84		_essro = .;
85		_ssro_size = _essro - _ssro ;
86		_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
87	}
88
89	__init_begin = .;
90
91	INIT_TEXT_SECTION(PAGE_SIZE)
92
93	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
94		INIT_DATA
95	}
96
97	. = ALIGN(4);
98	.init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) {
99		__ivt_start = .;
100		*(.init.ivt)
101		__ivt_end = .;
102	}
103
104	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
105		INIT_SETUP(0)
106	}
107
108	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) {
109		INIT_CALLS
110	}
111
112	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
113		CON_INITCALL
114	}
115
116	SECURITY_INIT
117
118	__init_end_before_initramfs = .;
119
120	.init.ramfs ALIGN(4096) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
121		__initramfs_start = .;
122		*(.init.ramfs)
123		__initramfs_end = .;
124		. = ALIGN(4);
125		LONG(0);
126/*
127 * FIXME this can break initramfs for MMU.
128 * Pad init.ramfs up to page boundary,
129 * so that __init_end == __bss_start. This will make image.elf
130 * consistent with the image.bin
131 */
132		/* . = ALIGN(4096); */
133	}
134	__init_end = .;
135
136	.bss ALIGN (4096) : AT(ADDR(.bss) - LOAD_OFFSET) {
137		/* page aligned when MMU used */
138		__bss_start = . ;
139			*(.bss*)
140			*(COMMON)
141		. = ALIGN (4) ;
142		__bss_stop = . ;
143		_ebss = . ;
144	}
145	. = ALIGN(4096);
146	_end = .;
147
148	DISCARDS
149}
150