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author | Björn Stenberg <bjorn@haxx.se> | 2002-03-28 15:09:10 +0000 |
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committer | Björn Stenberg <bjorn@haxx.se> | 2002-03-28 15:09:10 +0000 |
commit | d9eb5c76032867f2f1f03d591c61c59be799fa7a (patch) | |
tree | f0adb17755cc95ddc908842b7d5ff63f5cd4db4e /firmware/system.h | |
parent | cd0f122071947ea08edea827efe176413de07151 (diff) | |
download | rockbox-d9eb5c76032867f2f1f03d591c61c59be799fa7a.tar.gz rockbox-d9eb5c76032867f2f1f03d591c61c59be799fa7a.zip |
First version
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@60 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/system.h')
-rw-r--r-- | firmware/system.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/firmware/system.h b/firmware/system.h new file mode 100644 index 0000000000..bacf90ad66 --- /dev/null +++ b/firmware/system.h | |||
@@ -0,0 +1,267 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Alan Korr | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #ifndef __SYSTEM_H__ | ||
21 | #define __SYSTEM_H__ | ||
22 | #include <sh7034.h> | ||
23 | |||
24 | #define KB *1024 | ||
25 | #define MB *1024 KB | ||
26 | #define GB *1024 MB | ||
27 | |||
28 | #define Hz *1 | ||
29 | #define KHz *1000 Hz | ||
30 | #define MHz *1000 KHz | ||
31 | |||
32 | #define ns *1 | ||
33 | #define us *1000 ns | ||
34 | #define ms *1000 us | ||
35 | |||
36 | /* | ||
37 | * 11.059,200 MHz => 90.4224537037037037037037037037037... ns | ||
38 | * 12.000,000 MHz => 83.3333333333333333333333333333333... ns | ||
39 | */ | ||
40 | |||
41 | #define PHI ((int)(12.000000 MHz)) | ||
42 | #define BAUDRATE 9600 | ||
43 | |||
44 | //#define PHI ((int)(11.059200 MHz)) | ||
45 | //#define BAUDRATE 115200 /* 115200 - 9600 */ | ||
46 | |||
47 | #define SI(a) \ | ||
48 | (*((volatile int *)a)) /* single integer access - 32-bit */ | ||
49 | #define HI(a) \ | ||
50 | (*((volatile short *)a)) /* half integer access - 16-bit */ | ||
51 | #define QI(a) \ | ||
52 | (*((volatile char *)a)) /* quarter integer access - 8-bit */ | ||
53 | |||
54 | #define nop \ | ||
55 | asm volatile ("nop") | ||
56 | |||
57 | #define __set_mask_constant(mask,address) \ | ||
58 | asm \ | ||
59 | ("or.b\t%0,@(r0,gbr)" \ | ||
60 | : \ | ||
61 | : /* %0 */ "I"((char)(mask)), \ | ||
62 | /* %1 */ "z"(address-GBR)) | ||
63 | |||
64 | #define __clear_mask_constant(mask,address) \ | ||
65 | asm \ | ||
66 | ("and.b\t%0,@(r0,gbr)" \ | ||
67 | : \ | ||
68 | : /* %0 */ "I"((char)~(mask)), \ | ||
69 | /* %1 */ "z"(address-GBR)) | ||
70 | |||
71 | #define __toggle_mask_constant(mask,address) \ | ||
72 | asm \ | ||
73 | ("xor.b\t%0,@(r0,gbr)" \ | ||
74 | : \ | ||
75 | : /* %0 */ "I"((char)(mask)), \ | ||
76 | /* %1 */ "z"(address-GBR)) | ||
77 | |||
78 | #define __test_mask_constant(mask,address) \ | ||
79 | ({ \ | ||
80 | int result; \ | ||
81 | asm \ | ||
82 | ("tst.b\t%1,@(r0,gbr)\n\tmovt\t%0" \ | ||
83 | : "=r"(result) \ | ||
84 | : "I"((char)(mask)),"z"(address-GBR)); \ | ||
85 | result; \ | ||
86 | }) | ||
87 | |||
88 | #define __set_bit_constant(bit,address) \ | ||
89 | asm \ | ||
90 | ("or.b\t%0,@(r0,gbr)" \ | ||
91 | : \ | ||
92 | : /* %0 */ "I"((char)(1<<(bit))), \ | ||
93 | /* %1 */ "z"(address-GBR)) | ||
94 | |||
95 | #define __clear_bit_constant(bit,address) \ | ||
96 | asm \ | ||
97 | ("and.b\t%0,@(r0,gbr)" \ | ||
98 | : \ | ||
99 | : /* %0 */ "I"((char)~(1<<(bit))), \ | ||
100 | /* %1 */ "z"(address-GBR)) | ||
101 | |||
102 | #define __toggle_bit_constant(bit,address) \ | ||
103 | asm \ | ||
104 | ("xor.b\t%0,@(r0,gbr)" \ | ||
105 | : \ | ||
106 | : /* %0 */ "I"((char)(1<<(bit))), \ | ||
107 | /* %1 */ "z"(address-GBR)) | ||
108 | |||
109 | #define __test_bit_constant(bit,address) \ | ||
110 | ({ \ | ||
111 | int result; \ | ||
112 | asm \ | ||
113 | ("tst.b\t%1,@(r0,gbr)\n\tmovt\t%0" \ | ||
114 | : "=r"(result) \ | ||
115 | : "I"((char)(1<<(bit))),"z"(address-GBR)); \ | ||
116 | result; \ | ||
117 | }) | ||
118 | |||
119 | #define __set_mask(mask,address) /* FIXME */ | ||
120 | #define __test_mask(mask,address) 0 /* FIXME */ | ||
121 | #define __clear_mask(mask,address) /* FIXME */ | ||
122 | #define __toggle_mask(mask,address) /* FIXME */ | ||
123 | |||
124 | #define __set_bit(bit,address) /* FIXME */ | ||
125 | #define __test_bit(bit,address) 0 /* FIXME */ | ||
126 | #define __clear_bit(bit,address) /* FIXME */ | ||
127 | #define __toggle_bit(bit,address) /* FIXME */ | ||
128 | |||
129 | #define set_mask(mask,address) \ | ||
130 | if (__builtin_constant_p (mask)) \ | ||
131 | __set_mask_constant (mask,address); \ | ||
132 | else \ | ||
133 | __set_mask (mask,address) | ||
134 | |||
135 | #define clear_mask(mask,address) \ | ||
136 | if (__builtin_constant_p (mask)) \ | ||
137 | __clear_mask_constant (mask,address); \ | ||
138 | else \ | ||
139 | __clear_mask (mask,address) | ||
140 | |||
141 | #define toggle_mask(mask,address) \ | ||
142 | if (__builtin_constant_p (mask)) \ | ||
143 | __toggle_mask_constant (mask,address); \ | ||
144 | else \ | ||
145 | __toggle_mask (mask,address) | ||
146 | |||
147 | #define test_mask(mask,address) \ | ||
148 | ( \ | ||
149 | (__builtin_constant_p (mask)) \ | ||
150 | ? (int)__test_mask_constant (mask,address) \ | ||
151 | : (int)__test_mask (mask,address) \ | ||
152 | ) | ||
153 | |||
154 | |||
155 | #define set_bit(bit,address) \ | ||
156 | if (__builtin_constant_p (bit)) \ | ||
157 | __set_bit_constant (bit,address); \ | ||
158 | else \ | ||
159 | __set_bit (bit,address) | ||
160 | |||
161 | #define clear_bit(bit,address) \ | ||
162 | if (__builtin_constant_p (bit)) \ | ||
163 | __clear_bit_constant (bit,address); \ | ||
164 | else \ | ||
165 | __clear_bit (bit,address) | ||
166 | |||
167 | #define toggle_bit(bit,address) \ | ||
168 | if (__builtin_constant_p (bit)) \ | ||
169 | __toggle_bit_constant (bit,address); \ | ||
170 | else \ | ||
171 | __toggle_bit (bit,address) | ||
172 | |||
173 | #define test_bit(bit,address) \ | ||
174 | ( \ | ||
175 | (__builtin_constant_p (bit)) \ | ||
176 | ? (int)__test_bit_constant (bit,address) \ | ||
177 | : (int)__test_bit (bit,address) \ | ||
178 | ) | ||
179 | |||
180 | |||
181 | extern char __swap_bit[256]; | ||
182 | |||
183 | #define swap_bit(byte) \ | ||
184 | __swap_bit[byte] | ||
185 | |||
186 | static inline short swabHI (short value) | ||
187 | /* | ||
188 | result[15..8] = value[ 7..0]; | ||
189 | result[ 7..0] = value[15..8]; | ||
190 | */ | ||
191 | { | ||
192 | short result; | ||
193 | asm volatile ("swap.b\t%1,%0" : "=r"(result) : "r"(value)); | ||
194 | return result; | ||
195 | } | ||
196 | |||
197 | static inline int swawSI (int value) | ||
198 | /* | ||
199 | result[31..16] = value[15.. 0]; | ||
200 | result[15.. 0] = value[31..16]; | ||
201 | */ | ||
202 | { | ||
203 | int result; | ||
204 | asm volatile ("swap.w\t%1,%0" : "=r"(result) : "r"(value)); | ||
205 | return result; | ||
206 | } | ||
207 | |||
208 | static inline int swabSI (int value) // should be avoided as much as possible | ||
209 | /* | ||
210 | result[31..24] = value[ 7.. 0]; | ||
211 | result[23..16] = value[15.. 8]; | ||
212 | result[15.. 8] = value[23..16]; | ||
213 | result[ 7.. 0] = value[31..24]; | ||
214 | */ | ||
215 | { | ||
216 | return swabHI(swawSI(swabSI(value))); | ||
217 | } | ||
218 | |||
219 | /* Test And Set - UNTESTED */ | ||
220 | static inline int tas (volatile int *pointer) | ||
221 | { | ||
222 | int result; | ||
223 | asm volatile ("tas.b\t@%1;movt\t%0" : "=t"(result) : "r"((char *)pointer) : "memory"); | ||
224 | return result; | ||
225 | } | ||
226 | |||
227 | static inline void sti (void) | ||
228 | { | ||
229 | asm volatile ("ldc\t%0,sr" : : "r"(0<<4)); | ||
230 | } | ||
231 | |||
232 | static inline void cli (void) | ||
233 | { | ||
234 | asm volatile ("ldc\t%0,sr" : : "r"(15<<4)); | ||
235 | } | ||
236 | |||
237 | /* Compare And Swap */ | ||
238 | static inline int cas (volatile int *pointer,int requested_value,int new_value) | ||
239 | { | ||
240 | cli(); | ||
241 | if (*pointer == requested_value) | ||
242 | { | ||
243 | *pointer = new_value; | ||
244 | sti (); | ||
245 | return 1; | ||
246 | } | ||
247 | sti (); | ||
248 | return 0; | ||
249 | } | ||
250 | |||
251 | static inline int cas2 (volatile int *pointer1,volatile int *pointer2,int requested_value1,int requested_value2,int new_value1,int new_value2) | ||
252 | { | ||
253 | cli(); | ||
254 | if (*pointer1 == requested_value1 && *pointer2 == requested_value2) | ||
255 | { | ||
256 | *pointer1 = new_value1; | ||
257 | *pointer2 = new_value2; | ||
258 | sti (); | ||
259 | return 1; | ||
260 | } | ||
261 | sti (); | ||
262 | return 0; | ||
263 | } | ||
264 | |||
265 | extern void system_reboot (void); | ||
266 | |||
267 | #endif | ||