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author | Karl Kurbjun <kkurbjun@gmail.com> | 2007-09-30 16:29:21 +0000 |
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committer | Karl Kurbjun <kkurbjun@gmail.com> | 2007-09-30 16:29:21 +0000 |
commit | a56b65342f1c1021472eb2899ab46e69a666f7f8 (patch) | |
tree | c4a0fcb647db0b7e9983ce5f11bdab0d945b895f /firmware/target/arm/tms320dm320/mrobe-500/crt0.S | |
parent | 5be5674b066b63ac8994db86f34c83c2c7f956ed (diff) | |
download | rockbox-a56b65342f1c1021472eb2899ab46e69a666f7f8.tar.gz rockbox-a56b65342f1c1021472eb2899ab46e69a666f7f8.zip |
Move some more files around and get the main build compiling
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14919 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tms320dm320/mrobe-500/crt0.S')
-rwxr-xr-x | firmware/target/arm/tms320dm320/mrobe-500/crt0.S | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/firmware/target/arm/tms320dm320/mrobe-500/crt0.S b/firmware/target/arm/tms320dm320/mrobe-500/crt0.S deleted file mode 100755 index 193470fd4a..0000000000 --- a/firmware/target/arm/tms320dm320/mrobe-500/crt0.S +++ /dev/null | |||
@@ -1,206 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * Arm bootloader and startup code based on startup.s from the iPodLinux loader | ||
13 | * | ||
14 | * Copyright (c) 2003, Daniel Palffy (dpalffy (at) rainstorm.org) | ||
15 | * Copyright (c) 2005, Bernard Leach <leachbj@bouncycastle.org> | ||
16 | * | ||
17 | * All files in this archive are subject to the GNU General Public License. | ||
18 | * See the file COPYING in the source tree root for full license agreement. | ||
19 | * | ||
20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
21 | * KIND, either express or implied. | ||
22 | * | ||
23 | ****************************************************************************/ | ||
24 | #include "config.h" | ||
25 | #include "cpu.h" | ||
26 | |||
27 | .section .init.text,"ax",%progbits | ||
28 | |||
29 | .global start | ||
30 | start: | ||
31 | msr cpsr, #0xd3 /* enter supervisor mode, disable IRQ */ | ||
32 | |||
33 | #if !defined(DEBUG) | ||
34 | /* Copy exception handler code to address 0 */ | ||
35 | ldr r2, =_vectorsstart | ||
36 | ldr r3, =_vectorsend | ||
37 | ldr r4, =_vectorscopy | ||
38 | 1: | ||
39 | cmp r3, r2 | ||
40 | ldrhi r5, [r4], #4 | ||
41 | strhi r5, [r2], #4 | ||
42 | bhi 1b | ||
43 | #else | ||
44 | ldr r1, =vectors | ||
45 | ldr r0, =irq_handler | ||
46 | str r0, [r1, #24] | ||
47 | ldr r0, =fiq_handler | ||
48 | str r0, [r1, #28] | ||
49 | #endif | ||
50 | |||
51 | /* Disable high vectors (at 0xffff0000 instead of 0x00000000) */ | ||
52 | mrc p15, 0, r0, c1, c0 | ||
53 | and r0, r0, #~(1<<13) | ||
54 | mcr p15, 0, r0, c1, c0 | ||
55 | |||
56 | #if !defined(BOOTLOADER) | ||
57 | |||
58 | #if !defined(STUB) | ||
59 | /* Zero out IBSS */ | ||
60 | ldr r2, =_iedata | ||
61 | ldr r3, =_iend | ||
62 | mov r4, #0 | ||
63 | 1: | ||
64 | cmp r3, r2 | ||
65 | strhi r4, [r2], #4 | ||
66 | bhi 1b | ||
67 | |||
68 | /* Copy the IRAM */ | ||
69 | ldr r2, =_iramcopy | ||
70 | ldr r3, =_iramstart | ||
71 | ldr r4, =_iramend | ||
72 | 1: | ||
73 | cmp r4, r3 | ||
74 | ldrhi r5, [r2], #4 | ||
75 | strhi r5, [r3], #4 | ||
76 | bhi 1b | ||
77 | #endif /* !STUB */ | ||
78 | #endif /* !BOOTLOADER */ | ||
79 | |||
80 | /* Initialise bss section to zero */ | ||
81 | ldr r2, =_edata | ||
82 | ldr r3, =_end | ||
83 | mov r4, #0 | ||
84 | 1: | ||
85 | cmp r3, r2 | ||
86 | strhi r4, [r2], #4 | ||
87 | bhi 1b | ||
88 | |||
89 | /* Set up some stack and munge it with 0xdeadbeef */ | ||
90 | ldr r3, =stackend | ||
91 | ldr r2, =stackbegin | ||
92 | ldr r4, =0xdeadbeef | ||
93 | 1: | ||
94 | cmp r3, r2 | ||
95 | strhi r4, [r2], #4 | ||
96 | bhi 1b | ||
97 | |||
98 | /* Set up stack for IRQ mode */ | ||
99 | msr cpsr_c, #0xd2 | ||
100 | ldr sp, =irq_stack | ||
101 | /* Set up stack for FIQ mode */ | ||
102 | msr cpsr_c, #0xd1 | ||
103 | ldr sp, =fiq_stack | ||
104 | |||
105 | /* Let abort and undefined modes use IRQ stack */ | ||
106 | msr cpsr_c, #0xd7 | ||
107 | ldr sp, =irq_stack | ||
108 | msr cpsr_c, #0xdb | ||
109 | ldr sp, =irq_stack | ||
110 | /* Switch to supervisor mode (no IRQ) */ | ||
111 | msr cpsr_c, #0xd3 | ||
112 | ldr sp, =stackend | ||
113 | |||
114 | #ifdef BOOTLOADER | ||
115 | /* get the high part of our execute address */ | ||
116 | ldr r2, =0xffffff00 | ||
117 | and r4, pc, r2 | ||
118 | |||
119 | /* Copy bootloader to safe area - 0x01900000 */ | ||
120 | mov r5, #0x00900000 | ||
121 | add r5, r5, #0x01000000 | ||
122 | ldr r6, = _dataend | ||
123 | sub r0, r6, r5 /* length of loader */ | ||
124 | add r0, r4, r0 /* r0 points to start of loader */ | ||
125 | 1: | ||
126 | cmp r5, r6 | ||
127 | ldrcc r2, [r4], #4 | ||
128 | strcc r2, [r5], #4 | ||
129 | bcc 1b | ||
130 | |||
131 | ldr pc, =start_loc /* jump to the relocated start_loc: */ | ||
132 | |||
133 | #endif | ||
134 | |||
135 | start_loc: | ||
136 | bl main | ||
137 | /* main() should never return */ | ||
138 | |||
139 | /* Exception handlers. Will be copied to address 0 after memory remapping */ | ||
140 | .section .vectors,"aw" | ||
141 | ldr pc, [pc, #24] | ||
142 | ldr pc, [pc, #24] | ||
143 | ldr pc, [pc, #24] | ||
144 | ldr pc, [pc, #24] | ||
145 | ldr pc, [pc, #24] | ||
146 | ldr pc, [pc, #24] | ||
147 | ldr pc, [pc, #24] | ||
148 | ldr pc, [pc, #24] | ||
149 | |||
150 | /* Exception vectors */ | ||
151 | .global vectors | ||
152 | vectors: | ||
153 | .word start | ||
154 | .word undef_instr_handler | ||
155 | .word software_int_handler | ||
156 | .word prefetch_abort_handler | ||
157 | .word data_abort_handler | ||
158 | .word reserved_handler | ||
159 | .word irq_handler | ||
160 | .word fiq_handler | ||
161 | |||
162 | .text | ||
163 | |||
164 | #if !defined(STUB) | ||
165 | .global irq | ||
166 | .global fiq | ||
167 | .global UIE | ||
168 | #endif | ||
169 | |||
170 | /* All illegal exceptions call into UIE with exception address as first | ||
171 | parameter. This is calculated differently depending on which exception | ||
172 | we're in. Second parameter is exception number, used for a string lookup | ||
173 | in UIE. | ||
174 | */ | ||
175 | undef_instr_handler: | ||
176 | mov r0, lr | ||
177 | mov r1, #0 | ||
178 | b UIE | ||
179 | |||
180 | /* We run supervisor mode most of the time, and should never see a software | ||
181 | exception being thrown. Perhaps make it illegal and call UIE? | ||
182 | */ | ||
183 | software_int_handler: | ||
184 | reserved_handler: | ||
185 | movs pc, lr | ||
186 | |||
187 | prefetch_abort_handler: | ||
188 | sub r0, lr, #4 | ||
189 | mov r1, #1 | ||
190 | b UIE | ||
191 | |||
192 | data_abort_handler: | ||
193 | sub r0, lr, #8 | ||
194 | mov r1, #2 | ||
195 | b UIE | ||
196 | |||
197 | UIE: | ||
198 | b UIE | ||
199 | |||
200 | /* 256 words of IRQ stack */ | ||
201 | .space 256*4 | ||
202 | irq_stack: | ||
203 | |||
204 | /* 256 words of FIQ stack */ | ||
205 | .space 256*4 | ||
206 | fiq_stack: | ||