Staging
v0.8.1
https://github.com/torvalds/linux
Raw File
Tip revision: 33688abb2802ff3a230bd2441f765477b94cc89e authored by Linus Torvalds on 20 June 2016, 04:30:02 UTC
Linux 4.7-rc4
Tip revision: 33688ab
l2cache.c
#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;
}

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