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- /*
- * Low-level initialization for EP93xx
- *
- * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
- *
- * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.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
- */
- #include <version.h>
- #include <asm/arch/ep93xx.h>
- .globl lowlevel_init
- lowlevel_init:
- /* backup return address */
- ldr r1, =SYSCON_SCRATCH0
- str lr, [r1]
- /* Turn on both LEDs */
- bl red_LED_on
- bl green_LED_on
- /* Configure flash wait states before we switch to the PLL */
- bl flash_cfg
- /* Set up PLL */
- bl pll_cfg
- /* Turn off the Green LED and leave the Red LED on */
- bl green_LED_off
- /* Setup SDRAM */
- bl sdram_cfg
- /* Turn on Green LED, Turn off the Red LED */
- bl green_LED_on
- bl red_LED_off
- /* FIXME: we use async mode for now */
- mrc p15, 0, r0, c1, c0, 0
- orr r0, r0, #0xc0000000
- mcr p15, 0, r0, c1, c0, 0
- /* restore return address */
- ldr r1, =SYSCON_SCRATCH0
- ldr lr, [r1]
- mov pc, lr
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