u-boot/arch/arm/cpu/armv7/omap4/lowlevel_init.S

/*
 * Board specific setup info
 *
 * (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/arch/omap4.h>

.globl lowlevel_init
lowlevel_init:
	/*
	 * Setup a temporary stack
	 */
	ldr	sp, =LOW_LEVEL_SRAM_STACK

	/*
	 * 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}

.globl set_pl310_ctrl_reg
set_pl310_ctrl_reg:
	PUSH	{r4-r11, lr}	@ save registers - ROM code may pollute
				@ our registers
	LDR	r12, =0x102	@ Set PL310 control register - value in R0
	.word	0xe1600070	@ SMC #0 - hand assembled because -march=armv5
				@ call ROM Code API to set control register
	POP	{r4-r11, pc}