blackfin_local.h 5.9 KB

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  1. /*
  2. * U-boot - blackfin_local.h
  3. *
  4. * Copyright (c) 2005-2007 Analog Devices Inc.
  5. *
  6. * See file CREDITS for list of people who contributed to this
  7. * project.
  8. *
  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.
  13. *
  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.
  18. *
  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,
  22. * MA 02110-1301 USA
  23. */
  24. #ifndef __BLACKFIN_LOCAL_H__
  25. #define __BLACKFIN_LOCAL_H__
  26. #include <asm/mem_map.h>
  27. #define LO(con32) ((con32) & 0xFFFF)
  28. #define lo(con32) ((con32) & 0xFFFF)
  29. #define HI(con32) (((con32) >> 16) & 0xFFFF)
  30. #define hi(con32) (((con32) >> 16) & 0xFFFF)
  31. #define OFFSET_(x) (x & 0x0000FFFF)
  32. #define MK_BMSK_(x) (1 << x)
  33. /* Ideally this should be USEC not MSEC, but the USEC multiplication
  34. * likes to overflow 32bit quantities which is all our assembler
  35. * currently supports ;(
  36. */
  37. #define USEC_PER_MSEC 1000
  38. #define MSEC_PER_SEC 1000
  39. #define BFIN_SCLK (100000000)
  40. #define SCLK_TO_MSEC(sclk) ((MSEC_PER_SEC * ((sclk) / USEC_PER_MSEC)) / (BFIN_SCLK / USEC_PER_MSEC))
  41. #define MSEC_TO_SCLK(msec) ((((BFIN_SCLK / USEC_PER_MSEC) * (msec)) / MSEC_PER_SEC) * USEC_PER_MSEC)
  42. #define L1_CACHE_SHIFT 5
  43. #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
  44. #include <linux/linkage.h>
  45. #include <asm/cache.h>
  46. #ifndef __ASSEMBLY__
  47. # ifdef SHARED_RESOURCES
  48. # include <asm/shared_resources.h>
  49. # endif
  50. # include <linux/types.h>
  51. extern u_long get_vco(void);
  52. extern u_long get_cclk(void);
  53. extern u_long get_sclk(void);
  54. extern u_long get_sclk0(void);
  55. extern u_long get_sclk1(void);
  56. extern u_long get_dclk(void);
  57. # define bfin_revid() (bfin_read_CHIPID() >> 28)
  58. extern bool bfin_os_log_check(void);
  59. extern void bfin_os_log_dump(void);
  60. extern void blackfin_icache_flush_range(const void *, const void *);
  61. extern void blackfin_dcache_flush_range(const void *, const void *);
  62. extern void blackfin_icache_dcache_flush_range(const void *, const void *);
  63. extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
  64. /* Use DMA to move data from on chip to external memory. The L1 instruction
  65. * regions can only be accessed via DMA, so if the address in question is in
  66. * that region, make sure we attempt to DMA indirectly.
  67. */
  68. # ifdef __ADSPBF561__
  69. /* Core B regions all need dma from Core A */
  70. # define addr_bfin_on_chip_mem(addr) \
  71. ((((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000) || \
  72. (((unsigned long)(addr) & 0xFFC00000) == 0xFF400000))
  73. # else
  74. # define addr_bfin_on_chip_mem(addr) \
  75. (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
  76. # endif
  77. # include <asm/system.h>
  78. #if ANOMALY_05000198
  79. # define NOP_PAD_ANOMALY_05000198 "nop;"
  80. #else
  81. # define NOP_PAD_ANOMALY_05000198
  82. #endif
  83. #define _bfin_readX(addr, size, asm_size, asm_ext) ({ \
  84. u32 __v; \
  85. __asm__ __volatile__( \
  86. NOP_PAD_ANOMALY_05000198 \
  87. "%0 = " #asm_size "[%1]" #asm_ext ";" \
  88. : "=d" (__v) \
  89. : "a" (addr) \
  90. ); \
  91. __v; })
  92. #define _bfin_writeX(addr, val, size, asm_size) \
  93. __asm__ __volatile__( \
  94. NOP_PAD_ANOMALY_05000198 \
  95. #asm_size "[%0] = %1;" \
  96. : \
  97. : "a" (addr), "d" ((u##size)(val)) \
  98. : "memory" \
  99. )
  100. #define bfin_read8(addr) _bfin_readX(addr, 8, b, (z))
  101. #define bfin_read16(addr) _bfin_readX(addr, 16, w, (z))
  102. #define bfin_read32(addr) _bfin_readX(addr, 32, , )
  103. #define bfin_write8(addr, val) _bfin_writeX(addr, val, 8, b)
  104. #define bfin_write16(addr, val) _bfin_writeX(addr, val, 16, w)
  105. #define bfin_write32(addr, val) _bfin_writeX(addr, val, 32, )
  106. #define bfin_read(addr) \
  107. ({ \
  108. sizeof(*(addr)) == 1 ? bfin_read8(addr) : \
  109. sizeof(*(addr)) == 2 ? bfin_read16(addr) : \
  110. sizeof(*(addr)) == 4 ? bfin_read32(addr) : \
  111. ({ BUG(); 0; }); \
  112. })
  113. #define bfin_write(addr, val) \
  114. do { \
  115. switch (sizeof(*(addr))) { \
  116. case 1: bfin_write8(addr, val); break; \
  117. case 2: bfin_write16(addr, val); break; \
  118. case 4: bfin_write32(addr, val); break; \
  119. default: BUG(); \
  120. } \
  121. } while (0)
  122. #define bfin_write_or(addr, bits) \
  123. do { \
  124. typeof(addr) __addr = (addr); \
  125. bfin_write(__addr, bfin_read(__addr) | (bits)); \
  126. } while (0)
  127. #define bfin_write_and(addr, bits) \
  128. do { \
  129. typeof(addr) __addr = (addr); \
  130. bfin_write(__addr, bfin_read(__addr) & (bits)); \
  131. } while (0)
  132. #define bfin_readPTR(addr) bfin_read32(addr)
  133. #define bfin_writePTR(addr, val) bfin_write32(addr, val)
  134. /* SSYNC implementation for C file */
  135. static inline void SSYNC(void)
  136. {
  137. int _tmp;
  138. if (ANOMALY_05000312)
  139. __asm__ __volatile__(
  140. "cli %0;"
  141. "nop;"
  142. "nop;"
  143. "ssync;"
  144. "sti %0;"
  145. : "=d" (_tmp)
  146. );
  147. else if (ANOMALY_05000244)
  148. __asm__ __volatile__(
  149. "nop;"
  150. "nop;"
  151. "nop;"
  152. "ssync;"
  153. );
  154. else
  155. __asm__ __volatile__("ssync;");
  156. }
  157. /* CSYNC implementation for C file */
  158. static inline void CSYNC(void)
  159. {
  160. int _tmp;
  161. if (ANOMALY_05000312)
  162. __asm__ __volatile__(
  163. "cli %0;"
  164. "nop;"
  165. "nop;"
  166. "csync;"
  167. "sti %0;"
  168. : "=d" (_tmp)
  169. );
  170. else if (ANOMALY_05000244)
  171. __asm__ __volatile__(
  172. "nop;"
  173. "nop;"
  174. "nop;"
  175. "csync;"
  176. );
  177. else
  178. __asm__ __volatile__("csync;");
  179. }
  180. #else /* __ASSEMBLY__ */
  181. /* SSYNC & CSYNC implementations for assembly files */
  182. #define ssync(x) SSYNC(x)
  183. #define csync(x) CSYNC(x)
  184. #if ANOMALY_05000312
  185. #define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch;
  186. #define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch;
  187. #elif ANOMALY_05000244
  188. #define SSYNC(scratch) nop; nop; nop; SSYNC;
  189. #define CSYNC(scratch) nop; nop; nop; CSYNC;
  190. #else
  191. #define SSYNC(scratch) SSYNC;
  192. #define CSYNC(scratch) CSYNC;
  193. #endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */
  194. #endif /* __ASSEMBLY__ */
  195. #endif