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annotate packages/hal/mn10300/am31/current/src/var_misc.c @ 36:e97d78785e2d ecos-sw-1999-09-12

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Merge from eCos master repository on 1999-09-12-15:40:34-BST
author jlarmour
date Sun, 12 Sep 1999 15:26:05 +0000
parents 641b639be825
children c38311975d4f
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1 //==========================================================================
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2 //
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3 // var_misc.c
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4 //
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5 // HAL CPU variant miscellaneous functions
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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) 1998,1999 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, jlarmour
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34 // Date: 1999-01-21
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35 // Purpose: HAL miscellaneous functions
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36 // Description: This file contains miscellaneous functions provided by the
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37 // HAL.
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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/infra/cyg_type.h> // Base types
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46 #include <cyg/infra/cyg_trac.h> // tracing macros
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47 #include <cyg/infra/cyg_ass.h> // assertion macros
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48
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49 #include <cyg/hal/hal_cache.h>
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50
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51 /*------------------------------------------------------------------------*/
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52 /* Variant specific initialization routine. */
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53
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54 void hal_variant_init(void)
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55 {
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56 }
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57
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58 /*------------------------------------------------------------------------*/
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59 /* Cache functions. */
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60
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61 #if !defined(CYG_HAL_MN10300_AM31_SIM)
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62 void cyg_hal_dcache_store(CYG_ADDRWORD base, int size)
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63 {
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64 volatile register CYG_BYTE *way0 = HAL_DCACHE_PURGE_WAY0;
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65 volatile register CYG_BYTE *way1 = HAL_DCACHE_PURGE_WAY1;
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66 register int i;
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67 register CYG_ADDRWORD state;
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68
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69 HAL_DCACHE_IS_ENABLED(state);
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70 if (state)
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71 HAL_DCACHE_DISABLE();
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72
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73 way0 += base & 0x000007f0;
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74 way1 += base & 0x000007f0;
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75 for( i = 0; i < size; i += HAL_DCACHE_LINE_SIZE )
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76 {
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77 *(CYG_ADDRWORD *)way0 = 0;
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78 *(CYG_ADDRWORD *)way1 = 0;
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79 way0 += HAL_DCACHE_LINE_SIZE;
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80 way1 += HAL_DCACHE_LINE_SIZE;
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81 }
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82 if (state)
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83 HAL_DCACHE_ENABLE();
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84 }
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85 #endif
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86
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87
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88 /*------------------------------------------------------------------------*/
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89 /* End of var_misc.c */