/* * (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 <asm/arch/pxa-regs.h> #include <asm/system.h> static void cache_flush(void); int cleanup_before_linux (void) { /* * this function is called just before we call linux * it prepares the processor for linux * * just disable everything that can disturb booting linux */ disable_interrupts (); /* turn off I-cache */ icache_disable(); dcache_disable(); /* flush I-cache */ cache_flush(); return (0); } /* flush I/D-cache */ static void cache_flush (void) { unsigned long i = 0; asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); } #ifndef CONFIG_CPU_MONAHANS void set_GPIO_mode(int gpio_mode) { int gpio = gpio_mode & GPIO_MD_MASK_NR; int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; int gafr; if (gpio_mode & GPIO_MD_MASK_DIR) { GPDR(gpio) |= GPIO_bit(gpio); } else { GPDR(gpio) &= ~GPIO_bit(gpio); } gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); } #endif /* CONFIG_CPU_MONAHANS */