diff options
Diffstat (limited to 'arch/arm/cpu/armv7/lowlevel_init.S')
-rw-r--r-- | arch/arm/cpu/armv7/lowlevel_init.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/lowlevel_init.S b/arch/arm/cpu/armv7/lowlevel_init.S new file mode 100644 index 00000000000..0d45528e999 --- /dev/null +++ b/arch/arm/cpu/armv7/lowlevel_init.S @@ -0,0 +1,51 @@ +/* + * A lowlevel_init function that sets up the stack to call a C function to + * perform further init. + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * + * 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 <asm-offsets.h> +#include <config.h> +#include <linux/linkage.h> + +ENTRY(lowlevel_init) + /* + * Setup a temporary stack + */ + ldr sp, =CONFIG_SYS_INIT_SP_ADDR + bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ + + /* + * Save the old lr(passed in ip) and the current lr to stack + */ + push {ip, lr} + + /* + * go setup pll, mux, memory + */ + bl s_init + pop {ip, pc} +ENDPROC(lowlevel_init) |