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 # define bfin_revid() (bfin_read_CHIPID() >> 28)
47 extern int bfin_os_log_check(void);
48 extern void bfin_os_log_dump(void);
50 extern void blackfin_icache_flush_range(const void *, const void *);
51 extern void blackfin_dcache_flush_range(const void *, const void *);
52 extern void blackfin_icache_dcache_flush_range(const void *, const void *);
53 extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
55 /* Use DMA to move data from on chip to external memory. The L1 instruction
56 * regions can only be accessed via DMA, so if the address in question is in
57 * that region, make sure we attempt to DMA indirectly.
60 /* Core B regions all need dma from Core A */
61 # define addr_bfin_on_chip_mem(addr) \
62 ((((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000) || \
63 (((unsigned long)(addr) & 0xFFC00000) == 0xFF400000))
65 # define addr_bfin_on_chip_mem(addr) \
66 (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
69 # include <asm/system.h>
72 # define NOP_PAD_ANOMALY_05000198 "nop;"
74 # define NOP_PAD_ANOMALY_05000198
77 #define BFIN_BUG() while (1) asm volatile("emuexcpt;");
79 #define _bfin_readX(addr, size, asm_size, asm_ext) ({ \
81 __asm__ __volatile__( \
82 NOP_PAD_ANOMALY_05000198 \
83 "%0 = " #asm_size "[%1]" #asm_ext ";" \
88 #define _bfin_writeX(addr, val, size, asm_size) \
89 __asm__ __volatile__( \
90 NOP_PAD_ANOMALY_05000198 \
91 #asm_size "[%0] = %1;" \
93 : "a" (addr), "d" ((u##size)(val)) \
97 #define bfin_read8(addr) _bfin_readX(addr, 8, b, (z))
98 #define bfin_read16(addr) _bfin_readX(addr, 16, w, (z))
99 #define bfin_read32(addr) _bfin_readX(addr, 32, , )
100 #define bfin_write8(addr, val) _bfin_writeX(addr, val, 8, b)
101 #define bfin_write16(addr, val) _bfin_writeX(addr, val, 16, w)
102 #define bfin_write32(addr, val) _bfin_writeX(addr, val, 32, )
104 #define bfin_read(addr) \
106 sizeof(*(addr)) == 1 ? bfin_read8(addr) : \
107 sizeof(*(addr)) == 2 ? bfin_read16(addr) : \
108 sizeof(*(addr)) == 4 ? bfin_read32(addr) : \
109 ({ BFIN_BUG(); 0; }); \
111 #define bfin_write(addr, val) \
113 switch (sizeof(*(addr))) { \
114 case 1: bfin_write8(addr, val); break; \
115 case 2: bfin_write16(addr, val); break; \
116 case 4: bfin_write32(addr, val); break; \
122 #define bfin_write_or(addr, bits) \
124 typeof(addr) __addr = (addr); \
125 bfin_write(__addr, bfin_read(__addr) | (bits)); \
128 #define bfin_write_and(addr, bits) \
130 typeof(addr) __addr = (addr); \
131 bfin_write(__addr, bfin_read(__addr) & (bits)); \
134 #define bfin_readPTR(addr) bfin_read32(addr)
135 #define bfin_writePTR(addr, val) bfin_write32(addr, val)
137 /* SSYNC implementation for C file */
138 static inline void SSYNC(void)
141 if (ANOMALY_05000312)
142 __asm__ __volatile__(
150 else if (ANOMALY_05000244)
151 __asm__ __volatile__(
158 __asm__ __volatile__("ssync;");
161 /* CSYNC implementation for C file */
162 static inline void CSYNC(void)
165 if (ANOMALY_05000312)
166 __asm__ __volatile__(
174 else if (ANOMALY_05000244)
175 __asm__ __volatile__(
182 __asm__ __volatile__("csync;");
185 #else /* __ASSEMBLY__ */
187 /* SSYNC & CSYNC implementations for assembly files */
189 #define ssync(x) SSYNC(x)
190 #define csync(x) CSYNC(x)
193 #define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch;
194 #define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch;
196 #elif ANOMALY_05000244
197 #define SSYNC(scratch) nop; nop; nop; SSYNC;
198 #define CSYNC(scratch) nop; nop; nop; CSYNC;
201 #define SSYNC(scratch) SSYNC;
202 #define CSYNC(scratch) CSYNC;
204 #endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */
206 #endif /* __ASSEMBLY__ */