1 /* 2 * arch/sh/kernel/cpu/sh2/probe.c 3 * 4 * CPU Subtype Probing for SH-2. 5 * 6 * Copyright (C) 2002 Paul Mundt 7 * 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 10 * for more details. 11 */ 12 13 14 #include <linux/init.h> 15 #include <asm/processor.h> 16 #include <asm/cache.h> 17 18 int __init detect_cpu_and_cache_system(void) 19 { 20 #if defined(CONFIG_CPU_SUBTYPE_SH7604) 21 current_cpu_data.type = CPU_SH7604; 22 current_cpu_data.dcache.ways = 4; 23 current_cpu_data.dcache.way_incr = (1<<10); 24 current_cpu_data.dcache.sets = 64; 25 current_cpu_data.dcache.entry_shift = 4; 26 current_cpu_data.dcache.linesz = L1_CACHE_BYTES; 27 current_cpu_data.dcache.flags = 0; 28 #elif defined(CONFIG_CPU_SUBTYPE_SH7619) 29 current_cpu_data.type = CPU_SH7619; 30 current_cpu_data.dcache.ways = 4; 31 current_cpu_data.dcache.way_incr = (1<<12); 32 current_cpu_data.dcache.sets = 256; 33 current_cpu_data.dcache.entry_shift = 4; 34 current_cpu_data.dcache.linesz = L1_CACHE_BYTES; 35 current_cpu_data.dcache.flags = 0; 36 #endif 37 /* 38 * SH-2 doesn't have separate caches 39 */ 40 current_cpu_data.dcache.flags |= SH_CACHE_COMBINED; 41 current_cpu_data.icache = current_cpu_data.dcache; 42 43 return 0; 44 } 45 46