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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:11 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:24 +0200 |
commit | 84ad688473bec2875e171b71040eb9e033c6c206 (patch) | |
tree | cf181129cbdf5d833d55262f759ea2cd9cafaff7 /arch/arm/cpu/arm1176/cpu.c | |
parent | 8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba (diff) | |
download | u-boot-imx-84ad688473bec2875e171b71040eb9e033c6c206.zip u-boot-imx-84ad688473bec2875e171b71040eb9e033c6c206.tar.gz u-boot-imx-84ad688473bec2875e171b71040eb9e033c6c206.tar.bz2 |
arm: Move cpu/$CPU to arch/arm/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/arm/cpu/arm1176/cpu.c')
-rw-r--r-- | arch/arm/cpu/arm1176/cpu.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm1176/cpu.c b/arch/arm/cpu/arm1176/cpu.c new file mode 100644 index 0000000..befa0cd --- /dev/null +++ b/arch/arm/cpu/arm1176/cpu.c @@ -0,0 +1,70 @@ +/* + * (C) Copyright 2004 Texas Insturments + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> + * + * 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 <common.h> +#include <command.h> +#ifdef CONFIG_S3C64XX +#include <asm/arch/s3c6400.h> +#endif +#include <asm/system.h> + +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 (); + + /* turn off I/D-cache */ + icache_disable(); + dcache_disable(); + /* flush I/D-cache */ + cache_flush(); + + return 0; +} + +/* flush I/D-cache */ +static void cache_flush (void) +{ + /* invalidate both caches and flush btb */ + asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (0)); + /* mem barrier to sync things */ + asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (0)); +} |