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annotate packages/hal/powerpc/sim/current/src/sim.S @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 435cced73e2f
children d2c90368aeef
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1 #==============================================================================
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2 ##
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3 ## sim.S
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4 ##
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5 ## Simulator hardware setup
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6 ##
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7 ##=============================================================================
208
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8 #####ECOSGPLCOPYRIGHTBEGIN####
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9 # -------------------------------------------
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10 # This file is part of eCos, the Embedded Configurable Operating System.
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11 # Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 #
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13 # eCos is free software; you can redistribute it and/or modify it under
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14 # the terms of the GNU General Public License as published by the Free
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15 # Software Foundation; either version 2 or (at your option) any later version.
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16 #
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17 # eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 # WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 # for more details.
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21 #
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22 # You should have received a copy of the GNU General Public License along
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23 # with eCos; if not, write to the Free Software Foundation, Inc.,
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24 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 #
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26 # As a special exception, if other files instantiate templates or use macros
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27 # or inline functions from this file, or you compile this file and link it
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28 # with other works to produce a work based on this file, this file does not
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29 # by itself cause the resulting work to be covered by the GNU General Public
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30 # License. However the source code for this file must still be made available
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31 # in accordance with section (3) of the GNU General Public License.
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32 #
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33 # This exception does not invalidate any other reasons why a work based on
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34 # this file might be covered by the GNU General Public License.
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35 #
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36 # Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 # at http://sources.redhat.com/ecos/ecos-license
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38 # -------------------------------------------
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39 #####ECOSGPLCOPYRIGHTEND####
0
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40 ##=============================================================================
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41 #######DESCRIPTIONBEGIN####
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42 ##
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43 ## Author(s): nickg
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44 ## Contributors: nickg
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45 ## Date: 1997-11-11
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46 ## Purpose: Simulator hardware setup
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47 ## Description: This file contains any code needed to initialize the
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48 ## hardware on the PowerPC simulator.
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49 ##
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50 ######DESCRIPTIONEND####
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51 ##
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52 ##=============================================================================
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53
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54 #include <pkgconf/hal.h>
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55
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56 #include <cyg/hal/arch.inc>
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57
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58 #------------------------------------------------------------------------------
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59
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60 .globl hal_hardware_init
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61 hal_hardware_init:
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62
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63 #if 0
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64 # Set up the BAT registers to cover same address spaces
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65
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66 # ibat0
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67 # base addr 0xfff00000
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68 # length 1M
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69 # WIMG = 0000
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70 # covers ROM
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71 lwi r4,0xfff0001f
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72 mtibatu 0,r4
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73 lwi r4,0xfff00002
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74 mtibatl 0,r4
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75
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76 # ibat1
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77 # base addr 0x00000000
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78 # length 256M
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79 # WIMG = 0000
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80 # covers DRAM and slots
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81 lwi r4,0x00001fff
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82 mtibatu 1,r4
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83 lwi r4,0x00000002
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84 mtibatl 1,r4
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85
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86 # dbat0
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87 # base addr 0xfff00000
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88 # length 256M
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89 # WIMG = 0101
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90 # covers ROM for data access
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91 lwi r4,0xfff01fff
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92 mtdbatu 0,r4
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93 lwi r4,0xfff0002a
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94 mtdbatl 0,r4
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95
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96 # dbat1
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97 # base addr 0x00000000
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98 # length 256M
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99 # WIMG = 0000
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100 # covers DRAM and slots
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101 lwi r4,0x00001fff
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102 mtdbatu 1,r4
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103 lwi r4,0x00000002
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104 mtdbatl 1,r4
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105
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106 # Enable translation in the MSR
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107 mfmsr r3
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108 lwi r4,0x00000030
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109 or r3,r3,r4
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110 mtmsr r3
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111 #endif
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112 blr
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113
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114 #------------------------------------------------------------------------------
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115 # end of sim.S