source: SVN/rincon/u-boot/cpu/i386/cpu.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 1.6 KB
Line 
1/*
2 * (C) Copyright 2002
3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
4 *
5 * (C) Copyright 2002
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
8 *
9 * (C) Copyright 2002
10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Alex Zuepke <azu@sysgo.de>
12 *
13 * See file CREDITS for list of people who contributed to this
14 * project.
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation; either version 2 of
19 * the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * MA 02111-1307 USA
30 */
31
32/*
33 * CPU specific code
34 */
35
36#include <common.h>
37#include <command.h>
38
39int cpu_init(void)
40{
41        /* initialize FPU, reset EM, set MP and NE */
42        asm ("fninit\n" \
43             "movl %cr0, %eax\n" \
44             "andl $~0x4, %eax\n" \
45             "orl  $0x22, %eax\n" \
46             "movl %eax, %cr0\n" );
47
48        return 0;
49}
50
51int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
52{
53        printf ("resetting ...\n");
54        udelay(50000);                          /* wait 50 ms */
55        disable_interrupts();
56        reset_cpu(0);
57
58        /*NOTREACHED*/
59        return 0;
60}
61
62void  flush_cache (unsigned long dummy1, unsigned long dummy2)
63{
64        asm("wbinvd\n");
65        return;
66}
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