1 /* 2 * (C) Copyright 2002 3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 4 * Marius Groeger <mgroeger@sysgo.de> 5 * 6 * (C) Copyright 2002 7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 8 * Alex Zuepke <azu@sysgo.de> 9 * 10 * See file CREDITS for list of people who contributed to this 11 * project. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation; either version 2 of 16 * the License, or (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 26 * MA 02111-1307 USA 27 */ 28 29 /* 30 * CPU specific code 31 */ 32 33 #include <common.h> 34 #include <command.h> 35 #include <clps7111.h> 36 #include <asm/hardware.h> 37 #include <asm/system.h> 38 39 int cleanup_before_linux (void) 40 { 41 /* 42 * this function is called just before we call linux 43 * it prepares the processor for linux 44 * 45 * we turn off caches etc ... 46 * and we set the CPU-speed to 73 MHz - see start.S for details 47 */ 48 49 #if defined(CONFIG_NETARM) || defined(CONFIG_S3C4510B) || defined(CONFIG_LPC2292) 50 disable_interrupts (); 51 /* Nothing more needed */ 52 #elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR) 53 /* No cleanup before linux for IntegratorAP/CM720T as yet */ 54 #elif defined(CONFIG_TEGRA) 55 /* No cleanup before linux for tegra as yet */ 56 #else 57 #error No cleanup_before_linux() defined for this CPU type 58 #endif 59 return 0; 60 } 61