diff options
Diffstat (limited to 'arch/sh/kernel/cpu/sh2a/probe.c')
| -rw-r--r-- | arch/sh/kernel/cpu/sh2a/probe.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh2a/probe.c b/arch/sh/kernel/cpu/sh2a/probe.c new file mode 100644 index 000000000..3f8797108 --- /dev/null +++ b/arch/sh/kernel/cpu/sh2a/probe.c @@ -0,0 +1,60 @@ +/* + * 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> + +void cpu_probe(void) +{ + boot_cpu_data.family = CPU_FAMILY_SH2A; + + /* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */ + boot_cpu_data.flags |= CPU_HAS_OP32; + +#if defined(CONFIG_CPU_SUBTYPE_SH7201) + boot_cpu_data.type = CPU_SH7201; + boot_cpu_data.flags |= CPU_HAS_FPU; +#elif defined(CONFIG_CPU_SUBTYPE_SH7203) + boot_cpu_data.type = CPU_SH7203; + boot_cpu_data.flags |= CPU_HAS_FPU; +#elif defined(CONFIG_CPU_SUBTYPE_SH7263) + boot_cpu_data.type = CPU_SH7263; + boot_cpu_data.flags |= CPU_HAS_FPU; +#elif defined(CONFIG_CPU_SUBTYPE_SH7264) + boot_cpu_data.type = CPU_SH7264; + boot_cpu_data.flags |= CPU_HAS_FPU; +#elif defined(CONFIG_CPU_SUBTYPE_SH7269) + boot_cpu_data.type = CPU_SH7269; + boot_cpu_data.flags |= CPU_HAS_FPU; +#elif defined(CONFIG_CPU_SUBTYPE_SH7206) + boot_cpu_data.type = CPU_SH7206; + boot_cpu_data.flags |= CPU_HAS_DSP; +#elif defined(CONFIG_CPU_SUBTYPE_MXG) + boot_cpu_data.type = CPU_MXG; + 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; +} |