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https://github.com/AsahiLinux/u-boot
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65 lines
1.6 KiB
ArmAsm
65 lines
1.6 KiB
ArmAsm
/*
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* Low-level initialization for EP93xx
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*
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* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
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*
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* Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <version.h>
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#include <asm/arch/ep93xx.h>
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.globl lowlevel_init
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lowlevel_init:
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/* backup return address */
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ldr r1, =SYSCON_SCRATCH0
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str lr, [r1]
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/* Turn on both LEDs */
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bl red_LED_on
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bl green_LED_on
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/* Configure flash wait states before we switch to the PLL */
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bl flash_cfg
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/* Set up PLL */
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bl pll_cfg
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/* Turn off the Green LED and leave the Red LED on */
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bl green_LED_off
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/* Setup SDRAM */
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bl sdram_cfg
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/* Turn on Green LED, Turn off the Red LED */
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bl green_LED_on
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bl red_LED_off
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/* FIXME: we use async mode for now */
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #0xc0000000
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mcr p15, 0, r0, c1, c0, 0
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/* restore return address */
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ldr r1, =SYSCON_SCRATCH0
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ldr lr, [r1]
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mov pc, lr
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