1 | /* |
---|
2 | * This file contains directives for the GNU linker which are specific |
---|
3 | * to the helas-403 |
---|
4 | * This file is intended to be used together with flashentry.s |
---|
5 | * it will generate a ROM that can be started directly after powerup reset |
---|
6 | * $Id$ |
---|
7 | */ |
---|
8 | |
---|
9 | OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", |
---|
10 | "elf32-powerpc") |
---|
11 | OUTPUT_ARCH(powerpc) |
---|
12 | SEARCH_DIR(/usr/local/powerpc-rtems/lib); |
---|
13 | |
---|
14 | ENTRY(flash_entry) |
---|
15 | |
---|
16 | MEMORY |
---|
17 | { |
---|
18 | RAM : ORIGIN = 0, LENGTH = 8M |
---|
19 | FLASH : ORIGIN = 0xFFF00000, LENGTH = 512K |
---|
20 | } |
---|
21 | |
---|
22 | /* DIRTY TRICK: repeat addresses here, so we can work with them... */ |
---|
23 | flash.start = 0xFFF00000; |
---|
24 | flash.size = 512K; |
---|
25 | |
---|
26 | SECTIONS |
---|
27 | { |
---|
28 | .entry : |
---|
29 | { |
---|
30 | *(.entry) |
---|
31 | } > FLASH /* this is ROM for flash_entry */ |
---|
32 | .text : |
---|
33 | { |
---|
34 | text.start = . ; |
---|
35 | *(.entry2) |
---|
36 | *(.text) |
---|
37 | *(.rodata) |
---|
38 | *(.rodata1) |
---|
39 | *(.descriptors) |
---|
40 | *(rom_ver) |
---|
41 | etext = ALIGN(0x10); |
---|
42 | _etext = .; |
---|
43 | |
---|
44 | |
---|
45 | __CTOR_LIST__ = .; |
---|
46 | LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) |
---|
47 | *(.ctors) |
---|
48 | LONG(0) |
---|
49 | __CTOR_END__ = .; |
---|
50 | |
---|
51 | __DTOR_LIST__ = .; |
---|
52 | LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) |
---|
53 | *(.dtors) |
---|
54 | LONG(0) |
---|
55 | __DTOR_END__ = .; |
---|
56 | |
---|
57 | *(.lit) |
---|
58 | *(.shdata) |
---|
59 | _init = .; *(.init) |
---|
60 | _fini = .; *(.fini) |
---|
61 | . = ALIGN(0x10); |
---|
62 | _endtext = .; |
---|
63 | text.end = .; |
---|
64 | copy.src = .; |
---|
65 | copy.tmptop.txt = .; |
---|
66 | } > FLASH /* this is ROM for flash_entry */ |
---|
67 | |
---|
68 | text.size = text.end - text.start; |
---|
69 | |
---|
70 | /* R/W Data */ |
---|
71 | /* place vectors to start at offset 0x100... */ |
---|
72 | /* IMPORTANT: sections ".fill" and ".vectors" must be the first in RAM!!*/ |
---|
73 | .fill 0x00010000 : |
---|
74 | { |
---|
75 | . = . + 0x0100; |
---|
76 | } > RAM |
---|
77 | |
---|
78 | .vectors : AT (copy.src) |
---|
79 | { |
---|
80 | copy.dest = .; |
---|
81 | *(.vectors) |
---|
82 | . = ALIGN(0x10); |
---|
83 | copy.tmptop.vec = .; |
---|
84 | } > RAM |
---|
85 | |
---|
86 | .data : AT (copy.tmptop.vec - copy.dest + copy.src) |
---|
87 | { |
---|
88 | *(.data) |
---|
89 | *(.data1) |
---|
90 | PROVIDE (__SDATA_START__ = .); |
---|
91 | *(.sdata) |
---|
92 | . = ALIGN(0x10); |
---|
93 | copy.tmptop.dat = .; |
---|
94 | } > RAM |
---|
95 | |
---|
96 | PROVIDE (__EXCEPT_START__ = .); |
---|
97 | .gcc_except_table : AT (copy.tmptop.dat - copy.dest + copy.src) |
---|
98 | { |
---|
99 | *(.gcc_except_table) |
---|
100 | . = ALIGN(0x10); |
---|
101 | copy.tmptop.exc = .; |
---|
102 | } >RAM |
---|
103 | PROVIDE (__EXCEPT_END__ = .); |
---|
104 | |
---|
105 | __GOT_START__ = .; |
---|
106 | .got : AT (copy.tmptop.exc - copy.dest + copy.src) |
---|
107 | { |
---|
108 | s.got = .; |
---|
109 | *(.got.plt) *(.got) |
---|
110 | . = ALIGN(0x10); |
---|
111 | copy.tmptop.got = .; |
---|
112 | } > RAM |
---|
113 | __GOT_END__ = .; |
---|
114 | |
---|
115 | .got1 : AT (copy.tmptop.got - copy.dest + copy.src) |
---|
116 | { |
---|
117 | *(.got1) |
---|
118 | . = ALIGN(0x10); |
---|
119 | copy.tmptop.gt1 = .; |
---|
120 | } >RAM |
---|
121 | |
---|
122 | PROVIDE (__GOT2_START__ = .); |
---|
123 | PROVIDE (_GOT2_START_ = .); |
---|
124 | .got2 : AT (copy.tmptop.gt1 - copy.dest + copy.src) |
---|
125 | { |
---|
126 | *(.got2) |
---|
127 | . = ALIGN(0x10); |
---|
128 | copy.tmptop.gt2 = .; |
---|
129 | } >RAM |
---|
130 | PROVIDE (__GOT2_END__ = .); |
---|
131 | PROVIDE (_GOT2_END_ = .); |
---|
132 | |
---|
133 | PROVIDE (__FIXUP_START__ = .); |
---|
134 | PROVIDE (_FIXUP_START_ = .); |
---|
135 | .fixup : AT (copy.tmptop.gt2 - copy.dest + copy.src) |
---|
136 | { |
---|
137 | *(.fixup) |
---|
138 | . = ALIGN(0x10); |
---|
139 | copy.tmptop.fix = .; |
---|
140 | } >RAM |
---|
141 | PROVIDE (_FIXUP_END_ = .); |
---|
142 | PROVIDE (__FIXUP_END__ = .); |
---|
143 | |
---|
144 | PROVIDE (__SDATA2_START__ = .); |
---|
145 | .sdata2 : AT (copy.tmptop.fix - copy.dest + copy.src) |
---|
146 | { |
---|
147 | *(.sdata2) |
---|
148 | . = ALIGN(0x10); |
---|
149 | copy.tmptop.sda = .; |
---|
150 | } >RAM |
---|
151 | |
---|
152 | copy.size = copy.tmptop.sda - copy.dest; |
---|
153 | |
---|
154 | .sbss2 : |
---|
155 | { |
---|
156 | *(.sbss2) |
---|
157 | } >RAM |
---|
158 | PROVIDE (__SBSS2_END__ = .); |
---|
159 | |
---|
160 | __SBSS_START__ = .; |
---|
161 | .bss : |
---|
162 | { |
---|
163 | bss.start = .; |
---|
164 | *(.bss) *(.sbss) *(COMMON) |
---|
165 | bss.end = ALIGN(4); |
---|
166 | } > RAM |
---|
167 | __SBSS_END__ = .; |
---|
168 | |
---|
169 | bss.size = bss.end - bss.start; |
---|
170 | |
---|
171 | /* reserve 16KByte for stack... */ |
---|
172 | stack.end = bss.end + 16K; |
---|
173 | PROVIDE(_end = stack.end); |
---|
174 | |
---|
175 | |
---|
176 | /* Stabs debugging sections. */ |
---|
177 | .stab 0 : { *(.stab) } |
---|
178 | .stabstr 0 : { *(.stabstr) } |
---|
179 | .stab.excl 0 : { *(.stab.excl) } |
---|
180 | .stab.exclstr 0 : { *(.stab.exclstr) } |
---|
181 | .stab.index 0 : { *(.stab.index) } |
---|
182 | .stab.indexstr 0 : { *(.stab.indexstr) } |
---|
183 | .comment 0 : { *(.comment) } |
---|
184 | |
---|
185 | /* DWARF debug sections. |
---|
186 | Symbols in the DWARF debugging sections are relative to the beginning |
---|
187 | of the section so we begin them at 0. */ |
---|
188 | /* DWARF 1 */ |
---|
189 | .debug 0 : { *(.debug) } |
---|
190 | .line 0 : { *(.line) } |
---|
191 | |
---|
192 | /* GNU DWARF 1 extensions */ |
---|
193 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
---|
194 | .debug_sfnames 0 : { *(.debug_sfnames) } |
---|
195 | |
---|
196 | /* DWARF 1.1 and DWARF 2 */ |
---|
197 | .debug_aranges 0 : { *(.debug_aranges) } |
---|
198 | .debug_pubnames 0 : { *(.debug_pubnames) } |
---|
199 | |
---|
200 | /* DWARF 2 */ |
---|
201 | .debug_info 0 : { *(.debug_info) } |
---|
202 | .debug_abbrev 0 : { *(.debug_abbrev) } |
---|
203 | .debug_line 0 : { *(.debug_line) } |
---|
204 | .debug_frame 0 : { *(.debug_frame) } |
---|
205 | .debug_str 0 : { *(.debug_str) } |
---|
206 | .debug_loc 0 : { *(.debug_loc) } |
---|
207 | .debug_macinfo 0 : { *(.debug_macinfo) } |
---|
208 | |
---|
209 | /* SGI/MIPS DWARF 2 extensions */ |
---|
210 | .debug_weaknames 0 : { *(.debug_weaknames) } |
---|
211 | .debug_funcnames 0 : { *(.debug_funcnames) } |
---|
212 | .debug_typenames 0 : { *(.debug_typenames) } |
---|
213 | .debug_varnames 0 : { *(.debug_varnames) } |
---|
214 | |
---|
215 | /* These must appear regardless of . */ |
---|
216 | /* |
---|
217 | * place reset instruction into last word of FLASH |
---|
218 | * NOTE: after reset, PPC403 starts executing from address |
---|
219 | * 0xFFFFFFFC |
---|
220 | * The reset section is placed in ROM at 0xF7FFFFFC instead, |
---|
221 | * but a mirror of this address exists at 0xFFFFFFFC due to |
---|
222 | * the initial memory controller setup |
---|
223 | */ |
---|
224 | .reset flash.start - 4 + flash.size : |
---|
225 | { |
---|
226 | *(.reset) |
---|
227 | } > FLASH |
---|
228 | } |
---|
229 | |
---|
230 | |
---|