src/arch/arm/armv4/cache.c

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /*
   3  * cache.c: Cache maintenance routines for ARMv7-A and ARMv7-R
   4  *
   5  * Reference: ARM Architecture Reference Manual, ARMv7-A and ARMv7-R edition
   6  */
   7
   8 #include <arch/cache.h>
   9
  10 void tlb_invalidate_all(void)
  11 {
  12 }
  13
  14 void dcache_clean_all(void)
  15 {
  16 }
  17
  18 void dcache_clean_invalidate_all(void)
  19 {
  20 }
  21
  22 void dcache_invalidate_all(void)
  23 {
  24 }
  25
  26 unsigned int dcache_line_bytes(void)
  27 {
  28         /*
  29          * TODO: Implement this correctly. For now we just return a
  30          * reasonable value. It was added during Nyan development and
  31          * may be used in bootblock code. It matters only if dcache is
  32          * turned on.
  33          */
  34         return 64;
  35 }
  36
  37 void dcache_clean_by_mva(void const *addr, size_t len)
  38 {
  39 }
  40
  41 void dcache_clean_invalidate_by_mva(void const *addr, size_t len)
  42 {
  43 }
  44
  45 void dcache_invalidate_by_mva(void const *addr, size_t len)
  46 {
  47 }
  48
  49 void dcache_mmu_disable(void)
  50 {
  51 }
  52
  53 void dcache_mmu_enable(void)
  54 {
  55 }
  56
  57 void cache_sync_instructions(void)
  58 {
  59 }