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annotate packages/hal/powerpc/sim/current/src/sim.S @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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3111d98ba7b3 Initial commit of eCos version 1.1
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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 Cygnus eCos Public License
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12 # Version 1.0 (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://sourceware.cygnus.com/ecos
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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 Cygnus Operating System, released
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22 # September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Cygnus. Portions created
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25 # by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
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26 # -------------------------------------------
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27 #
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28 #####COPYRIGHTEND####
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29 ##=============================================================================
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30 #######DESCRIPTIONBEGIN####
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31 ##
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32 ## Author(s): nickg
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33 ## Contributors: nickg
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34 ## Date: 1997-11-11
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35 ## Purpose: Simulator hardware setup
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36 ## Description: This file contains any code needed to initialize the
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37 ## hardware on the PowerPC simulator.
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38 ##
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39 ######DESCRIPTIONEND####
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40 ##
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41 ##=============================================================================
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42
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43 #include <pkgconf/hal.h>
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44
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45 #include "cyg/hal/ppc.inc"
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46
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47 #------------------------------------------------------------------------------
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48
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49 .globl hal_hardware_init
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50 hal_hardware_init:
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51
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52 #if 0
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53 # Set up the BAT registers to cover same address spaces
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54
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55 # ibat0
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56 # base addr 0xfff00000
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57 # length 1M
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58 # WIMG = 0000
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59 # covers ROM
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60 lwi r4,0xfff0001f
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61 mtibatu 0,r4
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62 lwi r4,0xfff00002
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63 mtibatl 0,r4
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64
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65 # ibat1
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66 # base addr 0x00000000
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67 # length 256M
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68 # WIMG = 0000
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69 # covers DRAM and slots
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70 lwi r4,0x00001fff
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71 mtibatu 1,r4
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72 lwi r4,0x00000002
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73 mtibatl 1,r4
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74
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75 # dbat0
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76 # base addr 0xfff00000
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77 # length 256M
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78 # WIMG = 0101
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79 # covers ROM for data access
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80 lwi r4,0xfff01fff
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81 mtdbatu 0,r4
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82 lwi r4,0xfff0002a
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83 mtdbatl 0,r4
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84
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85 # dbat1
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86 # base addr 0x00000000
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87 # length 256M
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88 # WIMG = 0000
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89 # covers DRAM and slots
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90 lwi r4,0x00001fff
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91 mtdbatu 1,r4
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92 lwi r4,0x00000002
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93 mtdbatl 1,r4
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94
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95 # Enable translation in the MSR
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96 mfmsr r3
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97 lwi r4,0x00000030
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98 or r3,r3,r4
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99 mtmsr r3
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100 #endif
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101 blr
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102
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103 #------------------------------------------------------------------------------
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104 # end of sim.S