From b02bad128669e567fce87d8df823b06a0144b8db Mon Sep 17 00:00:00 2001 From: Nobuhiro Iwamatsu Date: Sun, 23 Sep 2007 02:12:30 +0900 Subject: sh: Update core code of SuperH. Signed-off-by: Nobuhiro Iwamatsu --- cpu/sh4/cache.c | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 cpu/sh4/cache.c (limited to 'cpu/sh4/cache.c') diff --git a/cpu/sh4/cache.c b/cpu/sh4/cache.c new file mode 100644 index 0000000..55acb31 --- /dev/null +++ b/cpu/sh4/cache.c @@ -0,0 +1,108 @@ +/* + * (C) Copyright 2007 + * Nobuhiro Iwamatsu + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +/* + * Jump to P2 area. + * When handling TLB or caches, we need to do it from P2 area. + */ +#define jump_to_P2() \ + do { \ + unsigned long __dummy; \ + __asm__ __volatile__( \ + "mov.l 1f, %0\n\t" \ + "or %1, %0\n\t" \ + "jmp @%0\n\t" \ + " nop\n\t" \ + ".balign 4\n" \ + "1: .long 2f\n" \ + "2:" \ + : "=&r" (__dummy) \ + : "r" (0x20000000)); \ + } while (0) + +/* + * Back to P1 area. + */ +#define back_to_P1() \ + do { \ + unsigned long __dummy; \ + __asm__ __volatile__( \ + "nop;nop;nop;nop;nop;nop;nop\n\t" \ + "mov.l 1f, %0\n\t" \ + "jmp @%0\n\t" \ + " nop\n\t" \ + ".balign 4\n" \ + "1: .long 2f\n" \ + "2:" \ + : "=&r" (__dummy)); \ + } while (0) + +#define CACHE_VALID 1 +#define CACHE_UPDATED 2 + +static inline void cache_wback_all(void) +{ + unsigned long addr, data, i, j; + + jump_to_P2(); + for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++){ + for (j = 0; j < CACHE_OC_NUM_WAYS; j++) { + addr = CACHE_OC_ADDRESS_ARRAY | (j << CACHE_OC_WAY_SHIFT) + | (i << CACHE_OC_ENTRY_SHIFT); + data = inl(addr); + if (data & CACHE_UPDATED) { + data &= ~CACHE_UPDATED; + outl(data, addr); + } + } + } + back_to_P1(); +} + + +#define CACHE_ENABLE 0 +#define CACHE_DISABLE 1 + +int cache_control(unsigned int cmd) +{ + unsigned long ccr; + + jump_to_P2(); + ccr = inl(CCR); + + if (ccr & CCR_CACHE_ENABLE) + cache_wback_all(); + + if (cmd == CACHE_DISABLE) + outl(CCR_CACHE_STOP, CCR); + else + outl(CCR_CACHE_INIT, CCR); + back_to_P1(); + + return 0; +} -- cgit v1.1 From 61fb15c516fef5631e305f1976d7b3a679725856 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Thu, 27 Dec 2007 01:52:50 +0100 Subject: Fix coding style issues; update CHANGELOG. Signed-off-by: Wolfgang Denk --- cpu/sh4/cache.c | 48 ++++++++++++++++++++++++------------------------ 1 file changed, 24 insertions(+), 24 deletions(-) (limited to 'cpu/sh4/cache.c') diff --git a/cpu/sh4/cache.c b/cpu/sh4/cache.c index 55acb31..4e744d7 100644 --- a/cpu/sh4/cache.c +++ b/cpu/sh4/cache.c @@ -30,36 +30,36 @@ * Jump to P2 area. * When handling TLB or caches, we need to do it from P2 area. */ -#define jump_to_P2() \ - do { \ +#define jump_to_P2() \ + do { \ unsigned long __dummy; \ - __asm__ __volatile__( \ - "mov.l 1f, %0\n\t" \ - "or %1, %0\n\t" \ - "jmp @%0\n\t" \ - " nop\n\t" \ - ".balign 4\n" \ - "1: .long 2f\n" \ - "2:" \ - : "=&r" (__dummy) \ - : "r" (0x20000000)); \ + __asm__ __volatile__( \ + "mov.l 1f, %0\n\t" \ + "or %1, %0\n\t" \ + "jmp @%0\n\t" \ + " nop\n\t" \ + ".balign 4\n" \ + "1: .long 2f\n" \ + "2:" \ + : "=&r" (__dummy) \ + : "r" (0x20000000)); \ } while (0) /* * Back to P1 area. */ -#define back_to_P1() \ - do { \ - unsigned long __dummy; \ - __asm__ __volatile__( \ - "nop;nop;nop;nop;nop;nop;nop\n\t" \ - "mov.l 1f, %0\n\t" \ - "jmp @%0\n\t" \ - " nop\n\t" \ - ".balign 4\n" \ - "1: .long 2f\n" \ - "2:" \ - : "=&r" (__dummy)); \ +#define back_to_P1() \ + do { \ + unsigned long __dummy; \ + __asm__ __volatile__( \ + "nop;nop;nop;nop;nop;nop;nop\n\t" \ + "mov.l 1f, %0\n\t" \ + "jmp @%0\n\t" \ + " nop\n\t" \ + ".balign 4\n" \ + "1: .long 2f\n" \ + "2:" \ + : "=&r" (__dummy)); \ } while (0) #define CACHE_VALID 1 -- cgit v1.1