From f74c31d50c3c568abf315f9b8b206a4ec7b9c9f6 Mon Sep 17 00:00:00 2001
From: Jesper Nilsson <jespern@stork.se.axis.com>
Date: Thu, 29 Nov 2007 17:24:10 +0100
Subject: CRIS v32: Add L2 cache initialization code.

---
 arch/cris/arch-v32/mm/l2cache.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 arch/cris/arch-v32/mm/l2cache.c

(limited to 'arch/cris')

diff --git a/arch/cris/arch-v32/mm/l2cache.c b/arch/cris/arch-v32/mm/l2cache.c
new file mode 100644
index 00000000000..332ff10dcc6
--- /dev/null
+++ b/arch/cris/arch-v32/mm/l2cache.c
@@ -0,0 +1,29 @@
+#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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