2 * U-boot - blackfin_local.h
4 * Copyright (c) 2005-2007 Analog Devices Inc.
6 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef __BLACKFIN_LOCAL_H__
10 #define __BLACKFIN_LOCAL_H__
12 #include <asm/mem_map.h>
14 #define LO(con32) ((con32) & 0xFFFF)
15 #define lo(con32) ((con32) & 0xFFFF)
16 #define HI(con32) (((con32) >> 16) & 0xFFFF)
17 #define hi(con32) (((con32) >> 16) & 0xFFFF)
19 #define OFFSET_(x) (x & 0x0000FFFF)
20 #define MK_BMSK_(x) (1 << x)
22 /* Ideally this should be USEC not MSEC, but the USEC multiplication
23 * likes to overflow 32bit quantities which is all our assembler
24 * currently supports ;(
26 #define USEC_PER_MSEC 1000
27 #define MSEC_PER_SEC 1000
28 #define BFIN_SCLK (100000000)
29 #define SCLK_TO_MSEC(sclk) ((MSEC_PER_SEC * ((sclk) / USEC_PER_MSEC)) / (BFIN_SCLK / USEC_PER_MSEC))
30 #define MSEC_TO_SCLK(msec) ((((BFIN_SCLK / USEC_PER_MSEC) * (msec)) / MSEC_PER_SEC) * USEC_PER_MSEC)
32 #define L1_CACHE_SHIFT 5
33 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
35 #include <linux/linkage.h>
36 #include <asm/cache.h>
39 # ifdef SHARED_RESOURCES
40 # include <asm/shared_resources.h>
43 # include <linux/types.h>
45 extern u_long get_vco(void);
46 extern u_long get_cclk(void);
47 extern u_long get_sclk(void);
48 extern u_long get_sclk0(void);
49 extern u_long get_sclk1(void);
50 extern u_long get_dclk(void);
52 # define bfin_revid() (bfin_read_CHIPID() >> 28)
54 extern int bfin_os_log_check(void);
55 extern void bfin_os_log_dump(void);
57 extern void blackfin_icache_flush_range(const void *, const void *);
58 extern void blackfin_dcache_flush_range(const void *, const void *);
59 extern void blackfin_icache_dcache_flush_range(const void *, const void *);
60 extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
62 /* Use DMA to move data from on chip to external memory. The L1 instruction
63 * regions can only be accessed via DMA, so if the address in question is in
64 * that region, make sure we attempt to DMA indirectly.
67 /* Core B regions all need dma from Core A */
68 # define addr_bfin_on_chip_mem(addr) \
69 ((((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000) || \
70 (((unsigned long)(addr) & 0xFFC00000) == 0xFF400000))
72 # define addr_bfin_on_chip_mem(addr) \
73 (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
76 # include <asm/system.h>
79 # define NOP_PAD_ANOMALY_05000198 "nop;"
81 # define NOP_PAD_ANOMALY_05000198
84 #define BFIN_BUG() while (1) asm volatile("emuexcpt;");
86 #define _bfin_readX(addr, size, asm_size, asm_ext) ({ \
88 __asm__ __volatile__( \
89 NOP_PAD_ANOMALY_05000198 \
90 "%0 = " #asm_size "[%1]" #asm_ext ";" \
95 #define _bfin_writeX(addr, val, size, asm_size) \
96 __asm__ __volatile__( \
97 NOP_PAD_ANOMALY_05000198 \
98 #asm_size "[%0] = %1;" \
100 : "a" (addr), "d" ((u##size)(val)) \
104 #define bfin_read8(addr) _bfin_readX(addr, 8, b, (z))
105 #define bfin_read16(addr) _bfin_readX(addr, 16, w, (z))
106 #define bfin_read32(addr) _bfin_readX(addr, 32, , )
107 #define bfin_write8(addr, val) _bfin_writeX(addr, val, 8, b)
108 #define bfin_write16(addr, val) _bfin_writeX(addr, val, 16, w)
109 #define bfin_write32(addr, val) _bfin_writeX(addr, val, 32, )
111 #define bfin_read(addr) \
113 sizeof(*(addr)) == 1 ? bfin_read8(addr) : \
114 sizeof(*(addr)) == 2 ? bfin_read16(addr) : \
115 sizeof(*(addr)) == 4 ? bfin_read32(addr) : \
116 ({ BFIN_BUG(); 0; }); \
118 #define bfin_write(addr, val) \
120 switch (sizeof(*(addr))) { \
121 case 1: bfin_write8(addr, val); break; \
122 case 2: bfin_write16(addr, val); break; \
123 case 4: bfin_write32(addr, val); break; \
129 #define bfin_write_or(addr, bits) \
131 typeof(addr) __addr = (addr); \
132 bfin_write(__addr, bfin_read(__addr) | (bits)); \
135 #define bfin_write_and(addr, bits) \
137 typeof(addr) __addr = (addr); \
138 bfin_write(__addr, bfin_read(__addr) & (bits)); \
141 #define bfin_readPTR(addr) bfin_read32(addr)
142 #define bfin_writePTR(addr, val) bfin_write32(addr, val)
144 /* SSYNC implementation for C file */
145 static inline void SSYNC(void)
148 if (ANOMALY_05000312)
149 __asm__ __volatile__(
157 else if (ANOMALY_05000244)
158 __asm__ __volatile__(
165 __asm__ __volatile__("ssync;");
168 /* CSYNC implementation for C file */
169 static inline void CSYNC(void)
172 if (ANOMALY_05000312)
173 __asm__ __volatile__(
181 else if (ANOMALY_05000244)
182 __asm__ __volatile__(
189 __asm__ __volatile__("csync;");
192 #else /* __ASSEMBLY__ */
194 /* SSYNC & CSYNC implementations for assembly files */
196 #define ssync(x) SSYNC(x)
197 #define csync(x) CSYNC(x)
200 #define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch;
201 #define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch;
203 #elif ANOMALY_05000244
204 #define SSYNC(scratch) nop; nop; nop; SSYNC;
205 #define CSYNC(scratch) nop; nop; nop; CSYNC;
208 #define SSYNC(scratch) SSYNC;
209 #define CSYNC(scratch) CSYNC;
211 #endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */
213 #endif /* __ASSEMBLY__ */