3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Alex Zuepke <azu@sysgo.de>
10 * See file CREDITS for list of people who contributed to this
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.
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.
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,
35 #include <asm/arch/pxa-regs.h>
36 #include <asm/system.h>
38 static void cache_flush(void);
45 int cleanup_before_linux (void)
48 * this function is called just before we call linux
49 * it prepares the processor for linux
51 * just disable everything that can disturb booting linux
54 disable_interrupts ();
56 /* turn off I-cache */
67 static void cache_flush (void)
71 asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
74 #ifndef CONFIG_CPU_MONAHANS
75 void set_GPIO_mode(int gpio_mode)
77 int gpio = gpio_mode & GPIO_MD_MASK_NR;
78 int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
81 if (gpio_mode & GPIO_MD_MASK_DIR)
83 GPDR(gpio) |= GPIO_bit(gpio);
87 GPDR(gpio) &= ~GPIO_bit(gpio);
89 gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
90 GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
92 #endif /* CONFIG_CPU_MONAHANS */