| /* |
| * 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 <mach/ep93xx-regs.h> |
| |
| .globl board_init_lowlevel |
| board_init_lowlevel: |
| /* 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 |
| |
| /* switch to async mode */ |
| 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 |
