2 * arch/sh/kernel/cpu/sh2a/probe.c
4 * CPU Subtype Probing for SH-2A.
6 * Copyright (C) 2004 - 2007 Paul Mundt
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
12 #include <linux/init.h>
13 #include <asm/processor.h>
14 #include <asm/cache.h>
16 int __init detect_cpu_and_cache_system(void)
18 /* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */
19 boot_cpu_data.flags |= CPU_HAS_OP32;
21 #if defined(CONFIG_CPU_SUBTYPE_SH7203)
22 boot_cpu_data.type = CPU_SH7203;
23 /* SH7203 has an FPU.. */
24 boot_cpu_data.flags |= CPU_HAS_FPU;
25 #elif defined(CONFIG_CPU_SUBTYPE_SH7263)
26 boot_cpu_data.type = CPU_SH7263;
27 boot_cpu_data.flags |= CPU_HAS_FPU;
28 #elif defined(CONFIG_CPU_SUBTYPE_SH7206)
29 boot_cpu_data.type = CPU_SH7206;
30 /* While SH7206 has a DSP.. */
31 boot_cpu_data.flags |= CPU_HAS_DSP;
32 #elif defined(CONFIG_CPU_SUBTYPE_MXG)
33 boot_cpu_data.type = CPU_MXG;
34 boot_cpu_data.flags |= CPU_HAS_DSP;
37 boot_cpu_data.dcache.ways = 4;
38 boot_cpu_data.dcache.way_incr = (1 << 11);
39 boot_cpu_data.dcache.sets = 128;
40 boot_cpu_data.dcache.entry_shift = 4;
41 boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
42 boot_cpu_data.dcache.flags = 0;
45 * The icache is the same as the dcache as far as this setup is
46 * concerned. The only real difference in hardware is that the icache
47 * lacks the U bit that the dcache has, none of this has any bearing
50 boot_cpu_data.icache = boot_cpu_data.dcache;