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53 lines
1.5 KiB
53 lines
1.5 KiB
/*
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* arch/sh/kernel/cpu/sh2a/probe.c
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*
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* CPU Subtype Probing for SH-2A.
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*
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* Copyright (C) 2004 - 2007 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <asm/processor.h>
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#include <asm/cache.h>
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int __init detect_cpu_and_cache_system(void)
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{
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/* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */
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boot_cpu_data.flags |= CPU_HAS_OP32;
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#if defined(CONFIG_CPU_SUBTYPE_SH7203)
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boot_cpu_data.type = CPU_SH7203;
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/* SH7203 has an FPU.. */
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boot_cpu_data.flags |= CPU_HAS_FPU;
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#elif defined(CONFIG_CPU_SUBTYPE_SH7263)
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boot_cpu_data.type = CPU_SH7263;
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boot_cpu_data.flags |= CPU_HAS_FPU;
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#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
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boot_cpu_data.type = CPU_SH7206;
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/* While SH7206 has a DSP.. */
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boot_cpu_data.flags |= CPU_HAS_DSP;
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#elif defined(CONFIG_CPU_SUBTYPE_MXG)
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boot_cpu_data.type = CPU_MXG;
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boot_cpu_data.flags |= CPU_HAS_DSP;
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#endif
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boot_cpu_data.dcache.ways = 4;
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boot_cpu_data.dcache.way_incr = (1 << 11);
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boot_cpu_data.dcache.sets = 128;
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boot_cpu_data.dcache.entry_shift = 4;
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boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
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boot_cpu_data.dcache.flags = 0;
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/*
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* The icache is the same as the dcache as far as this setup is
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* concerned. The only real difference in hardware is that the icache
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* lacks the U bit that the dcache has, none of this has any bearing
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* on the cache info.
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*/
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boot_cpu_data.icache = boot_cpu_data.dcache;
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return 0;
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}
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