l2cache.c

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#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <memmap.h>
#include <hwregs/reg_map.h>
#include <hwregs/reg_rdwr.h>
#include <hwregs/l2cache_defs.h>
#include <asm/io.h>

#define L2CACHE_SIZE 64

int __init l2cache_init(void)
{
    reg_l2cache_rw_ctrl ctrl = {0};
    reg_l2cache_rw_cfg cfg = {.en = regk_l2cache_yes};

    ctrl.csize = L2CACHE_SIZE;
    ctrl.cbase = L2CACHE_SIZE / 4 + (L2CACHE_SIZE % 4 ? 1 : 0);
    REG_WR(l2cache, regi_l2cache, rw_ctrl, ctrl);

    /* Flush the tag memory */
    memset((void *)(MEM_INTMEM_START | MEM_NON_CACHEABLE), 0, 2*1024);

    /* Enable the cache */
    REG_WR(l2cache, regi_l2cache, rw_cfg, cfg);

    return 0;
}