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wdenk57b2d802003-06-27 21:31:46 +00001
wdenkabda5ca2003-05-31 18:35:21 +00002/*
3 * (C) Copyright 2002
4 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
26OUTPUT_ARCH(i386)
27ENTRY(_start)
28
29SECTIONS
wdenk57b2d802003-06-27 21:31:46 +000030{
wdenkabda5ca2003-05-31 18:35:21 +000031 . = 0x387c0000; /* Where bootcode in the flash is mapped */
32 .text : { *(.text); }
wdenk57b2d802003-06-27 21:31:46 +000033
34 . = ALIGN(4);
35 .rodata : { *(.rodata) }
wdenkabda5ca2003-05-31 18:35:21 +000036
wdenk57b2d802003-06-27 21:31:46 +000037 . = 0x400000; /* Ram data segment to use */
wdenkabda5ca2003-05-31 18:35:21 +000038 _i386boot_romdata_dest = ABSOLUTE(.);
wdenk57b2d802003-06-27 21:31:46 +000039 .data : AT ( LOADADDR(.rodata) + SIZEOF(.rodata) ) { *(.data) }
40 _i386boot_romdata_start = LOADADDR(.data);
wdenkabda5ca2003-05-31 18:35:21 +000041
wdenk57b2d802003-06-27 21:31:46 +000042 . = ALIGN(4);
43 .got : AT ( LOADADDR(.data) + SIZEOF(.data) ) { *(.got) }
44 _i386boot_romdata_size = SIZEOF(.data) + SIZEOF(.got);
wdenkabda5ca2003-05-31 18:35:21 +000045
46
wdenk57b2d802003-06-27 21:31:46 +000047 . = ALIGN(4);
wdenkabda5ca2003-05-31 18:35:21 +000048 _i386boot_bss_start = ABSOLUTE(.);
wdenk57b2d802003-06-27 21:31:46 +000049 .bss : { *(.bss) }
wdenkabda5ca2003-05-31 18:35:21 +000050 _i386boot_bss_size = SIZEOF(.bss);
wdenk57b2d802003-06-27 21:31:46 +000051
52
53 __u_boot_cmd_start = .;
54 .u_boot_cmd : { *(.u_boot_cmd) }
55 __u_boot_cmd_end = .;
56
57
wdenkabda5ca2003-05-31 18:35:21 +000058 /* 16bit realmode trampoline code */
59 .realmode 0x7c0 : AT ( LOADADDR(.got) + SIZEOF(.got) ) { *(.realmode) }
wdenk57b2d802003-06-27 21:31:46 +000060
wdenkabda5ca2003-05-31 18:35:21 +000061 _i386boot_realmode = LOADADDR(.realmode);
62 _i386boot_realmode_size = SIZEOF(.realmode);
wdenk57b2d802003-06-27 21:31:46 +000063
wdenkabda5ca2003-05-31 18:35:21 +000064 /* 16bit BIOS emulation code (just enough to boot Linux) */
65 .bios 0 : AT ( LOADADDR(.realmode) + SIZEOF(.realmode) ) { *(.bios) }
wdenk57b2d802003-06-27 21:31:46 +000066
wdenkabda5ca2003-05-31 18:35:21 +000067 _i386boot_bios = LOADADDR(.bios);
68 _i386boot_bios_size = SIZEOF(.bios);
wdenk57b2d802003-06-27 21:31:46 +000069
wdenkabda5ca2003-05-31 18:35:21 +000070
71 /* The load addresses below assumes that the flash
72 * will be mapped so that 0x387f0000 == 0xffff0000
73 * at reset time
74 *
wdenk57b2d802003-06-27 21:31:46 +000075 * The fe00 and ff00 offsets of the start32 and start16
wdenkabda5ca2003-05-31 18:35:21 +000076 * segments are arbitrary, the just have to be mapped
77 * at reset and the code have to fit.
78 * The fff0 offset of reset is important, however.
79 */
wdenk57b2d802003-06-27 21:31:46 +000080
81
wdenkabda5ca2003-05-31 18:35:21 +000082 . = 0xfffffe00;
wdenk57b2d802003-06-27 21:31:46 +000083 .start32 : AT (0x387ffe00) { *(.start32); }
84
wdenkabda5ca2003-05-31 18:35:21 +000085 . = 0xff00;
wdenk57b2d802003-06-27 21:31:46 +000086 .start16 : AT (0x387fff00) { *(.start16); }
87
wdenkabda5ca2003-05-31 18:35:21 +000088 . = 0xfff0;
wdenk57b2d802003-06-27 21:31:46 +000089 .reset : AT (0x387ffff0) { *(.reset); }
wdenkabda5ca2003-05-31 18:35:21 +000090 _i386boot_end = (LOADADDR(.reset) + SIZEOF(.reset) );
91}