xref: /OK3568_Linux_fs/kernel/arch/mips/txx9/jmr3927/prom.c (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * BRIEF MODULE DESCRIPTION
3*4882a593Smuzhiyun  *    PROM library initialisation code, assuming a version of
4*4882a593Smuzhiyun  *    pmon is the boot code.
5*4882a593Smuzhiyun  *
6*4882a593Smuzhiyun  * Copyright 2001 MontaVista Software Inc.
7*4882a593Smuzhiyun  * Author: MontaVista Software, Inc.
8*4882a593Smuzhiyun  *              ahennessy@mvista.com
9*4882a593Smuzhiyun  *
10*4882a593Smuzhiyun  * Based on arch/mips/au1000/common/prom.c
11*4882a593Smuzhiyun  *
12*4882a593Smuzhiyun  * This file was derived from Carsten Langgaard's
13*4882a593Smuzhiyun  * arch/mips/mips-boards/xx files.
14*4882a593Smuzhiyun  *
15*4882a593Smuzhiyun  * Carsten Langgaard, carstenl@mips.com
16*4882a593Smuzhiyun  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
17*4882a593Smuzhiyun  *
18*4882a593Smuzhiyun  *  This program is free software; you can redistribute  it and/or modify it
19*4882a593Smuzhiyun  *  under  the terms of  the GNU General  Public License as published by the
20*4882a593Smuzhiyun  *  Free Software Foundation;  either version 2 of the  License, or (at your
21*4882a593Smuzhiyun  *  option) any later version.
22*4882a593Smuzhiyun  *
23*4882a593Smuzhiyun  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
24*4882a593Smuzhiyun  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
25*4882a593Smuzhiyun  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
26*4882a593Smuzhiyun  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
27*4882a593Smuzhiyun  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28*4882a593Smuzhiyun  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
29*4882a593Smuzhiyun  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
30*4882a593Smuzhiyun  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
31*4882a593Smuzhiyun  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32*4882a593Smuzhiyun  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33*4882a593Smuzhiyun  *
34*4882a593Smuzhiyun  *  You should have received a copy of the  GNU General Public License along
35*4882a593Smuzhiyun  *  with this program; if not, write  to the Free Software Foundation, Inc.,
36*4882a593Smuzhiyun  *  675 Mass Ave, Cambridge, MA 02139, USA.
37*4882a593Smuzhiyun  */
38*4882a593Smuzhiyun #include <linux/init.h>
39*4882a593Smuzhiyun #include <linux/kernel.h>
40*4882a593Smuzhiyun #include <linux/memblock.h>
41*4882a593Smuzhiyun #include <asm/txx9/generic.h>
42*4882a593Smuzhiyun #include <asm/txx9/jmr3927.h>
43*4882a593Smuzhiyun 
jmr3927_prom_init(void)44*4882a593Smuzhiyun void __init jmr3927_prom_init(void)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun 	/* CCFG */
47*4882a593Smuzhiyun 	if ((tx3927_ccfgptr->ccfg & TX3927_CCFG_TLBOFF) == 0)
48*4882a593Smuzhiyun 		pr_err("TX3927 TLB off\n");
49*4882a593Smuzhiyun 
50*4882a593Smuzhiyun 	memblock_add(0, JMR3927_SDRAM_SIZE);
51*4882a593Smuzhiyun 	txx9_sio_putchar_init(TX3927_SIO_REG(1));
52*4882a593Smuzhiyun }
53