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CRIS v32: Add L2 cache initialization code.

hifive-unleashed-5.1
Jesper Nilsson 2007-11-29 17:24:10 +01:00 committed by Jesper Nilsson
parent 58d0831928
commit f74c31d50c
1 changed files with 29 additions and 0 deletions
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29
arch/cris/arch-v32/mm/l2cache.c 100644
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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;
}