2 * U-boot - blackfin_local.h
4 * Copyright (c) 2005-2007 Analog Devices Inc.
6 * See file CREDITS for list of people who contributed to this
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.
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.
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., 51 Franklin St, Fifth Floor, Boston,
25 #ifndef __BLACKFIN_LOCAL_H__
26 #define __BLACKFIN_LOCAL_H__
28 #define LO(con32) ((con32) & 0xFFFF)
29 #define lo(con32) ((con32) & 0xFFFF)
30 #define HI(con32) (((con32) >> 16) & 0xFFFF)
31 #define hi(con32) (((con32) >> 16) & 0xFFFF)
33 #define OFFSET_(x) (x & 0x0000FFFF)
34 #define MK_BMSK_(x) (1 << x)
36 /* Ideally this should be USEC not MSEC, but the USEC multiplication
37 * likes to overflow 32bit quantities which is all our assembler
38 * currently supports ;(
40 #define USEC_PER_MSEC 1000
41 #define MSEC_PER_SEC 1000
42 #define BFIN_SCLK (100000000)
43 #define SCLK_TO_MSEC(sclk) ((MSEC_PER_SEC * ((sclk) / USEC_PER_MSEC)) / (BFIN_SCLK / USEC_PER_MSEC))
44 #define MSEC_TO_SCLK(msec) ((((BFIN_SCLK / USEC_PER_MSEC) * (msec)) / MSEC_PER_SEC) * USEC_PER_MSEC)
46 #define L1_CACHE_SHIFT 5
47 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
49 #include <asm/linkage.h>
52 # ifdef SHARED_RESOURCES
53 # include <asm/shared_resources.h>
56 # include <linux/types.h>
58 extern u_long get_vco(void);
59 extern u_long get_cclk(void);
60 extern u_long get_sclk(void);
62 # define bfin_revid() (*pCHIPID >> 28)
64 extern bool bfin_os_log_check(void);
65 extern void bfin_os_log_dump(void);
67 extern void blackfin_icache_flush_range(const void *, const void *);
68 extern void blackfin_dcache_flush_range(const void *, const void *);
69 extern void blackfin_icache_dcache_flush_range(const void *, const void *);
70 extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
72 /* Use DMA to move data from on chip to external memory. The L1 instruction
73 * regions can only be accessed via DMA, so if the address in question is in
74 * that region, make sure we attempt to DMA indirectly.
76 # define addr_bfin_on_chip_mem(addr) (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
78 # include <asm/system.h>
81 # define NOP_PAD_ANOMALY_05000198 "nop;"
83 # define NOP_PAD_ANOMALY_05000198
86 #define bfin_read8(addr) ({ \
88 __asm__ __volatile__( \
89 NOP_PAD_ANOMALY_05000198 \
96 #define bfin_read16(addr) ({ \
98 __asm__ __volatile__( \
99 NOP_PAD_ANOMALY_05000198 \
106 #define bfin_read32(addr) ({ \
108 __asm__ __volatile__( \
109 NOP_PAD_ANOMALY_05000198 \
116 #define bfin_readPTR(addr) bfin_read32(addr)
118 #define bfin_write8(addr, val) \
119 __asm__ __volatile__( \
120 NOP_PAD_ANOMALY_05000198 \
123 : "a" (addr), "d" (val) \
127 #define bfin_write16(addr, val) \
128 __asm__ __volatile__( \
129 NOP_PAD_ANOMALY_05000198 \
132 : "a" (addr), "d" (val) \
136 #define bfin_write32(addr, val) \
137 __asm__ __volatile__( \
138 NOP_PAD_ANOMALY_05000198 \
141 : "a" (addr), "d" (val) \
145 #define bfin_writePTR(addr, val) bfin_write32(addr, val)
147 /* SSYNC implementation for C file */
148 static inline void SSYNC(void)
151 if (ANOMALY_05000312)
152 __asm__ __volatile__(
160 else if (ANOMALY_05000244)
161 __asm__ __volatile__(
168 __asm__ __volatile__("ssync;");
171 /* CSYNC implementation for C file */
172 static inline void CSYNC(void)
175 if (ANOMALY_05000312)
176 __asm__ __volatile__(
184 else if (ANOMALY_05000244)
185 __asm__ __volatile__(
192 __asm__ __volatile__("csync;");
195 #else /* __ASSEMBLY__ */
197 /* SSYNC & CSYNC implementations for assembly files */
199 #define ssync(x) SSYNC(x)
200 #define csync(x) CSYNC(x)
203 #define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch;
204 #define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch;
206 #elif ANOMALY_05000244
207 #define SSYNC(scratch) nop; nop; nop; SSYNC;
208 #define CSYNC(scratch) nop; nop; nop; CSYNC;
211 #define SSYNC(scratch) SSYNC;
212 #define CSYNC(scratch) CSYNC;
214 #endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */
216 #endif /* __ASSEMBLY__ */