| /* |
| * (C) Copyright 2002 |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| * Marius Groeger <mgroeger@sysgo.de> |
| * |
| * (C) Copyright 2002 |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| * Alex Zuepke <azu@sysgo.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 |
| */ |
| |
| /* |
| * CPU specific code |
| */ |
| |
| #include <common.h> |
| #include <command.h> |
| #include <clps7111.h> |
| #include <asm/hardware.h> |
| #include <asm/system.h> |
| |
| #if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO) |
| static void cache_flush(void); |
| #endif |
| |
| int cpu_init (void) |
| { |
| return 0; |
| } |
| |
| int cleanup_before_linux (void) |
| { |
| /* |
| * this function is called just before we call linux |
| * it prepares the processor for linux |
| * |
| * we turn off caches etc ... |
| * and we set the CPU-speed to 73 MHz - see start.S for details |
| */ |
| |
| #if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO) |
| disable_interrupts (); |
| |
| /* turn off I-cache */ |
| icache_disable(); |
| dcache_disable(); |
| |
| /* flush I-cache */ |
| cache_flush(); |
| #ifdef CONFIG_ARM7_REVD |
| /* go to high speed */ |
| IO_SYSCON3 = (IO_SYSCON3 & ~CLKCTL) | CLKCTL_73; |
| #endif |
| #elif defined(CONFIG_NETARM) || defined(CONFIG_S3C4510B) || defined(CONFIG_LPC2292) |
| disable_interrupts (); |
| /* Nothing more needed */ |
| #elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR) |
| /* No cleanup before linux for IntegratorAP/CM720T as yet */ |
| #else |
| #error No cleanup_before_linux() defined for this CPU type |
| #endif |
| return 0; |
| } |
| |
| #if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO) |
| /* flush I/D-cache */ |
| static void cache_flush (void) |
| { |
| unsigned long i = 0; |
| |
| asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); |
| } |
| #elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR) |
| /* No specific cache setup for IntegratorAP/CM720T as yet */ |
| void icache_enable (void) |
| { |
| } |
| #endif |