arch/arm-sun4i/boot/support.c

   1 /*
   2     Copyright © 2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8
   9 #include "boot.h"
  10
  11 #include <sys/types.h>
  12
  13 void arm_flush_cache(uint32_t addr, uint32_t length) {
  14         while (length) {
  15                 __asm__ __volatile__("mcr p15, 0, %0, c7, c14, 1"::"r"(addr));
  16                 addr += 32;
  17                 length -= 32;
  18         }
  19         __asm__ __volatile__("mcr p15, 0, %0, c7, c10, 4"::"r"(addr));
  20 }
  21
  22 void arm_icache_invalidate(uint32_t addr, uint32_t length) {
  23         while (length) {
  24                 __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 1"::"r"(addr));
  25                 addr += 32;
  26                 length -= 32;
  27         }
  28         __asm__ __volatile__("mcr p15, 0, %0, c7, c10, 4"::"r"(addr));
  29 }
  30
  31 void arm_dcache_invalidate(uint32_t addr, uint32_t length) {
  32         while (length) {
  33                 __asm__ __volatile__("mcr p15, 0, %0, c7, c6, 1"::"r"(addr));
  34                 addr += 32;
  35                 length -= 32;
  36         }
  37         __asm__ __volatile__("mcr p15, 0, %0, c7, c10, 4"::"r"(addr));
  38 }
  39
  40 int32_t strlen(const char *c) {
  41         int32_t result = 0;
  42         while (*c++)
  43                 result++;
  44
  45         return result;
  46 }
  47
  48 const char *remove_path(const char *in) {
  49     const char *p = &in[strlen(in)-1];
  50     while (p > in && p[-1] != '/' && p[-1] != ':') p--;
  51     return p;
  52 }