From 84ad688473bec2875e171b71040eb9e033c6c206 Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Mon, 12 Apr 2010 22:28:11 -0500 Subject: arm: Move cpu/$CPU to arch/arm/cpu/$CPU Signed-off-by: Peter Tyser --- arch/arm/cpu/arm1136/cpu.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 arch/arm/cpu/arm1136/cpu.c (limited to 'arch/arm/cpu/arm1136/cpu.c') diff --git a/arch/arm/cpu/arm1136/cpu.c b/arch/arm/cpu/arm1136/cpu.c new file mode 100644 index 0000000..ade7f46 --- /dev/null +++ b/arch/arm/cpu/arm1136/cpu.c @@ -0,0 +1,76 @@ +/* + * (C) Copyright 2004 Texas Insturments + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * 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 + */ + +/* + * CPU specific code + */ + +#include +#include +#include + +static void cache_flush(void); + +int cleanup_before_linux (void) +{ + /* + * this function is called just before we call linux + * it prepares the processor for linux + * + * we turn off caches etc ... + */ + + disable_interrupts (); + +#ifdef CONFIG_LCD + { + extern void lcd_disable(void); + extern void lcd_panel_disable(void); + + lcd_disable(); /* proper disable of lcd & panel */ + lcd_panel_disable(); + } +#endif + + /* turn off I/D-cache */ + icache_disable(); + dcache_disable(); + /* flush I/D-cache */ + cache_flush(); + + return 0; +} + +static void cache_flush(void) +{ + unsigned long i = 0; + + asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i)); /* invalidate both caches and flush btb */ + asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (i)); /* mem barrier to sync things */ +} -- cgit v1.1