Blame view

kernel/linux-rt-4.4.41/arch/mips/txx9/jmr3927/prom.c 2.06 KB
5113f6f70   김현기   kernel add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
  /*
   * BRIEF MODULE DESCRIPTION
   *    PROM library initialisation code, assuming a version of
   *    pmon is the boot code.
   *
   * Copyright 2001 MontaVista Software Inc.
   * Author: MontaVista Software, Inc.
   *              ahennessy@mvista.com
   *
   * Based on arch/mips/au1000/common/prom.c
   *
   * This file was derived from Carsten Langgaard's
   * arch/mips/mips-boards/xx files.
   *
   * Carsten Langgaard, carstenl@mips.com
   * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   *
   *  This program is free software; you can redistribute  it and/or modify it
   *  under  the terms of  the GNU General  Public License as published by the
   *  Free Software Foundation;  either version 2 of the  License, or (at your
   *  option) any later version.
   *
   *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
   *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
   *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
   *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
   *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
   *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
   *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *  You should have received a copy of the  GNU General Public License along
   *  with this program; if not, write  to the Free Software Foundation, Inc.,
   *  675 Mass Ave, Cambridge, MA 02139, USA.
   */
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <asm/bootinfo.h>
  #include <asm/txx9/generic.h>
  #include <asm/txx9/jmr3927.h>
  
  void __init jmr3927_prom_init(void)
  {
  	/* CCFG */
  	if ((tx3927_ccfgptr->ccfg & TX3927_CCFG_TLBOFF) == 0)
  		printk(KERN_ERR "TX3927 TLB off
  ");
  
  	add_memory_region(0, JMR3927_SDRAM_SIZE, BOOT_MEM_RAM);
  	txx9_sio_putchar_init(TX3927_SIO_REG(1));
  }