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annotate packages/hal/powerpc/sim/current/src/sim.S @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents bf00f99aec69
children e0c0827131d1
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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 ##=============================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
0
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30 #####COPYRIGHTEND####
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31 ##=============================================================================
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32 #######DESCRIPTIONBEGIN####
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33 ##
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34 ## Author(s): nickg
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35 ## Contributors: nickg
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36 ## Date: 1997-11-11
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37 ## Purpose: Simulator hardware setup
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38 ## Description: This file contains any code needed to initialize the
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39 ## hardware on the PowerPC simulator.
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40 ##
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41 ######DESCRIPTIONEND####
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42 ##
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43 ##=============================================================================
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44
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45 #include <pkgconf/hal.h>
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46
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47 #include <cyg/hal/arch.inc>
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48
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49 #------------------------------------------------------------------------------
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50
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51 .globl hal_hardware_init
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52 hal_hardware_init:
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53
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54 #if 0
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55 # Set up the BAT registers to cover same address spaces
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56
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57 # ibat0
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58 # base addr 0xfff00000
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59 # length 1M
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60 # WIMG = 0000
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61 # covers ROM
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62 lwi r4,0xfff0001f
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63 mtibatu 0,r4
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64 lwi r4,0xfff00002
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65 mtibatl 0,r4
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66
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67 # ibat1
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68 # base addr 0x00000000
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69 # length 256M
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70 # WIMG = 0000
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71 # covers DRAM and slots
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72 lwi r4,0x00001fff
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73 mtibatu 1,r4
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74 lwi r4,0x00000002
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75 mtibatl 1,r4
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76
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77 # dbat0
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78 # base addr 0xfff00000
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79 # length 256M
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80 # WIMG = 0101
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81 # covers ROM for data access
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82 lwi r4,0xfff01fff
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83 mtdbatu 0,r4
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84 lwi r4,0xfff0002a
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85 mtdbatl 0,r4
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86
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87 # dbat1
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88 # base addr 0x00000000
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89 # length 256M
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90 # WIMG = 0000
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91 # covers DRAM and slots
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92 lwi r4,0x00001fff
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93 mtdbatu 1,r4
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94 lwi r4,0x00000002
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95 mtdbatl 1,r4
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96
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97 # Enable translation in the MSR
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98 mfmsr r3
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99 lwi r4,0x00000030
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100 or r3,r3,r4
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101 mtmsr r3
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102 #endif
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103 blr
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104
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105 #------------------------------------------------------------------------------
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106 # end of sim.S