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annotate packages/hal/sparc/erc32/current/src/hal_priv.c @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
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1 //===========================================================================
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2 //
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3 // hal_priv.c
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4 //
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5 // SPARC ERC32 Architecture sim-specific private variables
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6 //
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7 //===========================================================================
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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 Free Software Foundation, 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
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //===========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): hmt
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43 // Contributors: hmt
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44 // Date: 1999-02-20
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45 // Purpose: private vars for SPARC ERC32.
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46 //
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47 //####DESCRIPTIONEND####
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48 //
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49 //===========================================================================
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50
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51
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52 #include <cyg/hal/hal_intr.h>
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53 #include <cyg/hal/hal_arch.h>
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54
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55 // ------------------------------------------------------------------------
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56 // Clock static to keep period recorded.
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57 cyg_int32 cyg_hal_sparc_clock_period = 0;
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58
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59 // ------------------------------------------------------------------------
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60 // Board specific startups.
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61
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62 extern void hal_board_prestart( void );
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63 extern void hal_board_poststart( void );
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64
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65 void hal_board_prestart( void )
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66 {
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67 }
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68
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69 void hal_board_poststart( void )
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70 {
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71 HAL_ENABLE_INTERRUPTS();
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72 // OK to do this post constructors, and good for testing.
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73 }
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74
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75 cyg_uint32
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76 hal_lsbit_index(cyg_uint32 mask)
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77 {
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78 int i;
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79 for (i = 0; i < 32; i++) {
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80 if (mask & (1<<i)) return ((cyg_uint32)i);
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81 }
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82 return ((cyg_uint32)-1);
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83 }
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84
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85 cyg_uint32
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86 hal_msbit_index(cyg_uint32 mask)
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87 {
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88 int i;
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89 for (i = 31; i >= 0; i--) {
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90 if (mask & (1<<i)) return ((cyg_uint32)i);
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91 }
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92 return ((cyg_uint32)-1);
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93 }
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94
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95 void
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96 hal_idle_thread_action(cyg_uint32 loop_count)
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97 {
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98 *((volatile cyg_uint32 *) 0x01f80008) = 0;
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99 }
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100
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101
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102 // EOF hal_priv.c