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/system.h>
38 DECLARE_GLOBAL_DATA_PTR;
41 static void cache_flush(void);
46 * setup up stacks if necessary
49 IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
50 FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
55 int cleanup_before_linux (void)
58 * this function is called just before we call linux
59 * it prepares the processor for linux
61 * just disable everything that can disturb booting linux
64 disable_interrupts ();
66 /* turn off I-cache */
77 static void cache_flush (void)
81 asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));