LXR linux/arch/cris/arch-v32/mm/l2cache.c

   1#include <linux/init.h>
   2#include <linux/kernel.h>
   3#include <linux/string.h>
   4#include <memmap.h>
   5#include <hwregs/reg_map.h>
   6#include <hwregs/reg_rdwr.h>
   7#include <hwregs/l2cache_defs.h>
   8#include <asm/io.h>
   9
  10#define L2CACHE_SIZE 64
  11
  12int __init l2cache_init(void)
  13{
  14        reg_l2cache_rw_ctrl ctrl = {0};
  15        reg_l2cache_rw_cfg cfg = {.en = regk_l2cache_yes};
  16
  17        ctrl.csize = L2CACHE_SIZE;
  18        ctrl.cbase = L2CACHE_SIZE / 4 + (L2CACHE_SIZE % 4 ? 1 : 0);
  19        REG_WR(l2cache, regi_l2cache, rw_ctrl, ctrl);
  20
  21        /* Flush the tag memory */
  22        memset((void *)(MEM_INTMEM_START | MEM_NON_CACHEABLE), 0, 2*1024);
  23
  24        /* Enable the cache */
  25        REG_WR(l2cache, regi_l2cache, rw_cfg, cfg);
  26
  27        return 0;
  28}
  29
  30