2 * (C) Copyright 2004 Texas Insturments
5 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Marius Groeger <mgroeger@sysgo.de>
9 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
36 #include <asm/system.h>
39 DECLARE_GLOBAL_DATA_PTR;
42 static void cache_flush(void);
47 * setup up stacks if necessary
50 IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
51 FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
56 int cleanup_before_linux (void)
59 * this function is called just before we call linux
60 * it prepares the processor for linux
62 * we turn off caches etc ...
65 disable_interrupts ();
69 extern void lcd_disable(void);
70 extern void lcd_panel_disable(void);
72 lcd_disable(); /* proper disable of lcd & panel */
77 /* turn off I/D-cache */
86 static void cache_flush(void)
90 asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i)); /* invalidate both caches and flush btb */
91 asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (i)); /* mem barrier to sync things */