1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* U-boot - blackfin_local.h
*
* Copyright (c) 2005-2007 Analog Devices Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#ifndef __BLACKFIN_LOCAL_H__
#define __BLACKFIN_LOCAL_H__
#include <asm/mem_map.h>
#define LO(con32) ((con32) & 0xFFFF)
#define lo(con32) ((con32) & 0xFFFF)
#define HI(con32) (((con32) >> 16) & 0xFFFF)
#define hi(con32) (((con32) >> 16) & 0xFFFF)
#define OFFSET_(x) (x & 0x0000FFFF)
#define MK_BMSK_(x) (1 << x)
/* Ideally this should be USEC not MSEC, but the USEC multiplication
* likes to overflow 32bit quantities which is all our assembler
* currently supports ;(
*/
#define USEC_PER_MSEC 1000
#define MSEC_PER_SEC 1000
#define BFIN_SCLK (100000000)
#define SCLK_TO_MSEC(sclk) ((MSEC_PER_SEC * ((sclk) / USEC_PER_MSEC)) / (BFIN_SCLK / USEC_PER_MSEC))
#define MSEC_TO_SCLK(msec) ((((BFIN_SCLK / USEC_PER_MSEC) * (msec)) / MSEC_PER_SEC) * USEC_PER_MSEC)
#define L1_CACHE_SHIFT 5
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
#include <asm/linkage.h>
#ifndef __ASSEMBLY__
# ifdef SHARED_RESOURCES
# include <asm/shared_resources.h>
# endif
# include <linux/types.h>
extern u_long get_vco(void);
extern u_long get_cclk(void);
extern u_long get_sclk(void);
# define bfin_revid() (bfin_read_CHIPID() >> 28)
extern bool bfin_os_log_check(void);
extern void bfin_os_log_dump(void);
extern void blackfin_icache_flush_range(const void *, const void *);
extern void blackfin_dcache_flush_range(const void *, const void *);
extern void blackfin_icache_dcache_flush_range(const void *, const void *);
extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
/* Use DMA to move data from on chip to external memory. The L1 instruction
* regions can only be accessed via DMA, so if the address in question is in
* that region, make sure we attempt to DMA indirectly.
*/
# define addr_bfin_on_chip_mem(addr) (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
# include <asm/system.h>
#if ANOMALY_05000198
# define NOP_PAD_ANOMALY_05000198 "nop;"
#else
# define NOP_PAD_ANOMALY_05000198
#endif
#define bfin_read8(addr) ({ \
uint8_t __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = b[%1] (z);" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define bfin_read16(addr) ({ \
uint16_t __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = w[%1] (z);" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define bfin_read32(addr) ({ \
uint32_t __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = [%1];" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define bfin_readPTR(addr) bfin_read32(addr)
#define bfin_write8(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"b[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_write16(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"w[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_write32(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_writePTR(addr, val) bfin_write32(addr, val)
/* SSYNC implementation for C file */
static inline void SSYNC(void)
{
int _tmp;
if (ANOMALY_05000312)
__asm__ __volatile__(
"cli %0;"
"nop;"
"nop;"
"ssync;"
"sti %0;"
: "=d" (_tmp)
);
else if (ANOMALY_05000244)
__asm__ __volatile__(
"nop;"
"nop;"
"nop;"
"ssync;"
);
else
__asm__ __volatile__("ssync;");
}
/* CSYNC implementation for C file */
static inline void CSYNC(void)
{
int _tmp;
if (ANOMALY_05000312)
__asm__ __volatile__(
"cli %0;"
"nop;"
"nop;"
"csync;"
"sti %0;"
: "=d" (_tmp)
);
else if (ANOMALY_05000244)
__asm__ __volatile__(
"nop;"
"nop;"
"nop;"
"csync;"
);
else
__asm__ __volatile__("csync;");
}
#else /* __ASSEMBLY__ */
/* SSYNC & CSYNC implementations for assembly files */
#define ssync(x) SSYNC(x)
#define csync(x) CSYNC(x)
#if ANOMALY_05000312
#define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch;
#define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch;
#elif ANOMALY_05000244
#define SSYNC(scratch) nop; nop; nop; SSYNC;
#define CSYNC(scratch) nop; nop; nop; CSYNC;
#else
#define SSYNC(scratch) SSYNC;
#define CSYNC(scratch) CSYNC;
#endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */
#endif /* __ASSEMBLY__ */
#endif
|
