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/*
* arch/sh/kernel/cpu/sh2a/probe.c
*
* CPU Subtype Probing for SH-2A.
*
* Copyright (C) 2004 - 2007 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)
{
/* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */
boot_cpu_data.flags |= CPU_HAS_OP32;
#if defined(CONFIG_CPU_SUBTYPE_SH7203)
boot_cpu_data.type = CPU_SH7203;
/* SH7203 has an FPU.. */
boot_cpu_data.flags |= CPU_HAS_FPU;
#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
boot_cpu_data.type = CPU_SH7206;
/* While SH7206 has a DSP.. */
boot_cpu_data.flags |= CPU_HAS_DSP;
#endif
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.dcache.way_incr = (1 << 11);
boot_cpu_data.dcache.sets = 128;
boot_cpu_data.dcache.entry_shift = 4;
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.flags = 0;
/*
* The icache is the same as the dcache as far as this setup is
* concerned. The only real difference in hardware is that the icache
* lacks the U bit that the dcache has, none of this has any bearing
* on the cache info.
*/
boot_cpu_data.icache = boot_cpu_data.dcache;
return 0;
}
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