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(microblaze_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 microblaze_start = CONFIG_KERNEL_BASE_ADDR; 24 .text : AT(ADDR(.text) - LOAD_OFFSET) { 25 _text = . ; 26 _stext = . ; 27 HEAD_TEXT 28 TEXT_TEXT 29 *(.fixup) 30 EXIT_TEXT 31 EXIT_CALL 32 SCHED_TEXT 33 LOCK_TEXT 34 KPROBES_TEXT 35 IRQENTRY_TEXT 36 . = ALIGN (4) ; 37 _etext = . ; 38 } 39 40 . = ALIGN (4) ; 41 __fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET) { 42 _fdt_start = . ; /* place for fdt blob */ 43 *(__fdt_blob) ; /* Any link-placed DTB */ 44 . = _fdt_start + 0x4000; /* Pad up to 16kbyte */ 45 _fdt_end = . ; 46 } 47 48 . = ALIGN(16); 49 RODATA 50 EXCEPTION_TABLE(16) 51 52 /* 53 * sdata2 section can go anywhere, but must be word aligned 54 * and SDA2_BASE must point to the middle of it 55 */ 56 .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) { 57 _ssrw = .; 58 . = ALIGN(PAGE_SIZE); /* page aligned when MMU used */ 59 *(.sdata2) 60 . = ALIGN(8); 61 _essrw = .; 62 _ssrw_size = _essrw - _ssrw; 63 _KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2); 64 } 65 66 _sdata = . ; 67 RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE) 68 _edata = . ; 69 70 /* Reserve some low RAM for r0 based memory references */ 71 . = ALIGN(0x4) ; 72 r0_ram = . ; 73 . = . + PAGE_SIZE; /* a page should be enough */ 74 75 /* Under the microblaze ABI, .sdata and .sbss must be contiguous */ 76 . = ALIGN(8); 77 .sdata : AT(ADDR(.sdata) - LOAD_OFFSET) { 78 _ssro = .; 79 *(.sdata) 80 } 81 82 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { 83 _ssbss = .; 84 *(.sbss) 85 _esbss = .; 86 _essro = .; 87 _ssro_size = _essro - _ssro ; 88 _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ; 89 } 90 91 . = ALIGN(PAGE_SIZE); 92 __init_begin = .; 93 94 INIT_TEXT_SECTION(PAGE_SIZE) 95 96 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { 97 INIT_DATA 98 } 99 100 . = ALIGN(4); 101 .init.ivt : AT(ADDR(.init.ivt) - LOAD_OFFSET) { 102 __ivt_start = .; 103 *(.init.ivt) 104 __ivt_end = .; 105 } 106 107 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { 108 INIT_SETUP(0) 109 } 110 111 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET ) { 112 INIT_CALLS 113 } 114 115 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { 116 CON_INITCALL 117 } 118 119 SECURITY_INIT 120 121 __init_end_before_initramfs = .; 122 123 .init.ramfs ALIGN(PAGE_SIZE) : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { 124 __initramfs_start = .; 125 *(.init.ramfs) 126 __initramfs_end = .; 127 . = ALIGN(4); 128 LONG(0); 129/* 130 * FIXME this can break initramfs for MMU. 131 * Pad init.ramfs up to page boundary, 132 * so that __init_end == __bss_start. This will make image.elf 133 * consistent with the image.bin 134 */ 135 /* . = ALIGN(PAGE_SIZE); */ 136 } 137 __init_end = .; 138 139 .bss ALIGN (PAGE_SIZE) : AT(ADDR(.bss) - LOAD_OFFSET) { 140 /* page aligned when MMU used */ 141 __bss_start = . ; 142 *(.bss*) 143 *(COMMON) 144 . = ALIGN (4) ; 145 __bss_stop = . ; 146 _ebss = . ; 147 } 148 . = ALIGN(PAGE_SIZE); 149 _end = .; 150 151 DISCARDS 152} 153