arch/avr32/cpu/cache.c

   1 /*
   2  * Copyright (C) 2004-2006 Atmel Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8
   9 #include <asm/arch/cacheflush.h>
  10
  11 void dcache_clean_range(volatile void *start, size_t size)
  12 {
  13         unsigned long v, begin, end, linesz;
  14
  15         linesz = CONFIG_SYS_DCACHE_LINESZ;
  16
  17         /* You asked for it, you got it */
  18         begin = (unsigned long)start & ~(linesz - 1);
  19         end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
  20
  21         for (v = begin; v < end; v += linesz)
  22                 dcache_clean_line((void *)v);
  23
  24         sync_write_buffer();
  25 }
  26
  27 void invalidate_dcache_range(unsigned long start, unsigned long stop)
  28 {
  29         unsigned long v, linesz;
  30
  31         linesz = CONFIG_SYS_DCACHE_LINESZ;
  32
  33         /* You asked for it, you got it */
  34         start = start & ~(linesz - 1);
  35         stop = (stop + linesz - 1) & ~(linesz - 1);
  36
  37         for (v = start; v < stop; v += linesz)
  38                 dcache_invalidate_line((void *)v);
  39 }
  40
  41 void flush_dcache_range(unsigned long start, unsigned long stop)
  42 {
  43         unsigned long v, linesz;
  44
  45         linesz = CONFIG_SYS_DCACHE_LINESZ;
  46
  47         /* You asked for it, you got it */
  48         start = start & ~(linesz - 1);
  49         stop = (stop + linesz - 1) & ~(linesz - 1);
  50
  51         for (v = start; v < stop; v += linesz)
  52                 dcache_flush_line((void *)v);
  53
  54         sync_write_buffer();
  55 }
  56
  57 void icache_invalidate_range(volatile void *start, size_t size)
  58 {
  59         unsigned long v, begin, end, linesz;
  60
  61         linesz = CONFIG_SYS_ICACHE_LINESZ;
  62
  63         /* You asked for it, you got it */
  64         begin = (unsigned long)start & ~(linesz - 1);
  65         end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
  66
  67         for (v = begin; v < end; v += linesz)
  68                 icache_invalidate_line((void *)v);
  69 }
  70
  71 /*
  72  * This is called after loading something into memory.  We need to
  73  * make sure that everything that was loaded is actually written to
  74  * RAM, and that the icache will look for it. Cleaning the dcache and
  75  * invalidating the icache will do the trick.
  76  */
  77 void  flush_cache (unsigned long start_addr, unsigned long size)
  78 {
  79         dcache_clean_range((void *)start_addr, size);
  80         icache_invalidate_range((void *)start_addr, size);
  81 }