blob: df437c72a3a355a1b95ecb452ae6f06fdd54da34 [file] [log] [blame]
wdenk2262cfe2002-11-18 00:14:45 +00001/*
2 * (C) Copyright 2002
3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
25OUTPUT_ARCH(i386)
26ENTRY(_start)
27
28SECTIONS
wdenk8bde7f72003-06-27 21:31:46 +000029{
wdenk7a8e9bed2003-05-31 18:35:21 +000030 . = 0x387c0000; /* Where bootcode in the flash is mapped */
wdenk2262cfe2002-11-18 00:14:45 +000031 .text : { *(.text); }
wdenk2262cfe2002-11-18 00:14:45 +000032
wdenk8bde7f72003-06-27 21:31:46 +000033 . = ALIGN(4);
Trent Piephof62fb992009-02-18 15:22:05 -080034 .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
wdenk8bde7f72003-06-27 21:31:46 +000035
Wolfgang Denk53677ef2008-05-20 16:00:29 +020036 . = 0x400000; /* Ram data segment to use */
wdenk2262cfe2002-11-18 00:14:45 +000037 _i386boot_romdata_dest = ABSOLUTE(.);
wdenk8bde7f72003-06-27 21:31:46 +000038 .data : AT ( LOADADDR(.rodata) + SIZEOF(.rodata) ) { *(.data) }
39 _i386boot_romdata_start = LOADADDR(.data);
wdenk2262cfe2002-11-18 00:14:45 +000040
wdenk8bde7f72003-06-27 21:31:46 +000041 . = ALIGN(4);
42 .got : AT ( LOADADDR(.data) + SIZEOF(.data) ) { *(.got) }
43 _i386boot_romdata_size = SIZEOF(.data) + SIZEOF(.got);
wdenk2262cfe2002-11-18 00:14:45 +000044
45
wdenk8bde7f72003-06-27 21:31:46 +000046 . = ALIGN(4);
wdenk2262cfe2002-11-18 00:14:45 +000047 _i386boot_bss_start = ABSOLUTE(.);
Selvamuthukumar9b827cf2008-10-16 22:54:03 +053048 .bss (NOLOAD) : { *(.bss) . = ALIGN(4); }
wdenk2262cfe2002-11-18 00:14:45 +000049 _i386boot_bss_size = SIZEOF(.bss);
wdenk8bde7f72003-06-27 21:31:46 +000050
51
wdenk2262cfe2002-11-18 00:14:45 +000052 /* 16bit realmode trampoline code */
53 .realmode 0x7c0 : AT ( LOADADDR(.got) + SIZEOF(.got) ) { *(.realmode) }
wdenk8bde7f72003-06-27 21:31:46 +000054
wdenk2262cfe2002-11-18 00:14:45 +000055 _i386boot_realmode = LOADADDR(.realmode);
56 _i386boot_realmode_size = SIZEOF(.realmode);
wdenk8bde7f72003-06-27 21:31:46 +000057
wdenk2262cfe2002-11-18 00:14:45 +000058 /* 16bit BIOS emulation code (just enough to boot Linux) */
59 .bios 0 : AT ( LOADADDR(.realmode) + SIZEOF(.realmode) ) { *(.bios) }
wdenk8bde7f72003-06-27 21:31:46 +000060
wdenk2262cfe2002-11-18 00:14:45 +000061 _i386boot_bios = LOADADDR(.bios);
62 _i386boot_bios_size = SIZEOF(.bios);
wdenk8bde7f72003-06-27 21:31:46 +000063
64
Wolfgang Denk807d5d72005-08-31 12:28:00 +020065 . = .;
wdenk8bde7f72003-06-27 21:31:46 +000066 __u_boot_cmd_start = .;
67 .u_boot_cmd : { *(.u_boot_cmd) }
68 __u_boot_cmd_end = .;
69
wdenk2262cfe2002-11-18 00:14:45 +000070
71 /* The load addresses below assumes that the flash
72 * will be mapped so that 0x387f0000 == 0xffff0000
73 * at reset time
74 *
wdenk8bde7f72003-06-27 21:31:46 +000075 * The fe00 and ff00 offsets of the start32 and start16
wdenk2262cfe2002-11-18 00:14:45 +000076 * segments are arbitrary, the just have to be mapped
77 * at reset and the code have to fit.
Graeme Russ85ffbbd2008-12-07 10:28:58 +110078 * The fff0 offset of resetvec is important, however.
wdenk2262cfe2002-11-18 00:14:45 +000079 */
wdenk8bde7f72003-06-27 21:31:46 +000080
81
wdenk2262cfe2002-11-18 00:14:45 +000082 . = 0xfffffe00;
wdenk8bde7f72003-06-27 21:31:46 +000083 .start32 : AT (0x387ffe00) { *(.start32); }
84
wdenk2262cfe2002-11-18 00:14:45 +000085 . = 0xff00;
wdenk8bde7f72003-06-27 21:31:46 +000086 .start16 : AT (0x387fff00) { *(.start16); }
87
wdenk2262cfe2002-11-18 00:14:45 +000088 . = 0xfff0;
Graeme Russ85ffbbd2008-12-07 10:28:58 +110089 .resetvec : AT (0x387ffff0) { *(.resetvec); }
90 _i386boot_end = (LOADADDR(.resetvec) + SIZEOF(.resetvec) );
wdenk2262cfe2002-11-18 00:14:45 +000091}