summaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/cpu/sh2/probe.c
blob: 108e81b682ed0cb18cfb72f72892f1d08316002c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
 * arch/sh/kernel/cpu/sh2/probe.c
 *
 * CPU Subtype Probing for SH-2.
 *
 * Copyright (C) 2002 Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */


#include <linux/init.h>
#include <asm/processor.h>
#include <asm/cache.h>

int __init detect_cpu_and_cache_system(void)
{
#if defined(CONFIG_CPU_SUBTYPE_SH7604)
	current_cpu_data.type			= CPU_SH7604;
	current_cpu_data.dcache.ways		= 4;
	current_cpu_data.dcache.way_incr	= (1<<10);
	current_cpu_data.dcache.sets		= 64;
	current_cpu_data.dcache.entry_shift	= 4;
	current_cpu_data.dcache.linesz		= L1_CACHE_BYTES;
	current_cpu_data.dcache.flags		= 0;
#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
	current_cpu_data.type			= CPU_SH7619;
	current_cpu_data.dcache.ways		= 4;
	current_cpu_data.dcache.way_incr	= (1<<12);
	current_cpu_data.dcache.sets		= 256;
	current_cpu_data.dcache.entry_shift	= 4;
	current_cpu_data.dcache.linesz		= L1_CACHE_BYTES;
	current_cpu_data.dcache.flags		= 0;
#endif
	/*
	 * SH-2 doesn't have separate caches
	 */
	current_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
	current_cpu_data.icache = current_cpu_data.dcache;

	return 0;
}

OpenPOWER on IntegriCloud