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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>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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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