arch/arm/cpu/armv7/tegra2/lowlevel_init.S

/*
 * SoC-specific setup info
 *
 * (C) Copyright 2010,2011
 * NVIDIA Corporation <www.nvidia.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 <config.h>
#include <version.h>

_TEXT_BASE:
	.word	CONFIG_SYS_TEXT_BASE	@ sdram load addr from config file

.global invalidate_dcache
invalidate_dcache:
	mov pc, lr

	.align	5
.global reset_cpu
reset_cpu:
	ldr	r1, rstctl			@ get addr for global reset
						@ reg
	ldr	r3, [r1]
	orr	r3, r3, #0x10
	str	r3, [r1]			@ force reset
	mov	r0, r0
_loop_forever:
	b	_loop_forever
rstctl:
	.word	PRM_RSTCTRL

.globl lowlevel_init
lowlevel_init:
	ldr	sp, SRAM_STACK
	str	ip, [sp]
	mov	ip, lr
	bl	s_init				@ go setup pll, mux & memory
	ldr	ip, [sp]
	mov	lr, ip

	mov	pc, lr				@ back to arch calling code

	@ the literal pools origin
	.ltorg

SRAM_STACK:
	.word LOW_LEVEL_SRAM_STACK