mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
6d01f51086
This adds support for the SH7203 (SH-2A) CPU. Signed-off-by: Kieran Bingham <kbingham@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
|
|
* 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;
|
|
}
|