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annotate packages/hal/powerpc/vads/current/src/hal_aux.c @ 461:aae52574f8c5

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Add support for PowerPC/8260 based platforms. Contributed by Patrick Doyle <wpd@delcomsys.com>
author gthomas
date Thu, 12 Dec 2002 21:15:24 +0000
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461
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1 //=============================================================================
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2 //
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3 // hal_aux.c
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4 //
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5 // HAL auxiliary objects and code; per platform
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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 Red Hat, Inc.
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12 // Copyright (C) 2002 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // 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 along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //=============================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): hmt
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45 // Contributors:hmt
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46 // Date: 1999-06-08
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47 // Purpose: HAL aux objects: startup tables.
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48 // Description: Tables for per-platform initialization
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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 #include <cyg/hal/hal_mem.h> // HAL memory definitions
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56 #include <cyg/infra/cyg_type.h>
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57
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58 // The memory map is weakly defined, allowing the application to redefine
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59 // it if necessary. The regions defined below are the minimum requirements.
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60 CYGARC_MEMDESC_TABLE CYGBLD_ATTRIB_WEAK = {
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61 // Mapping for the Motorola MPC8260 development board
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62 CYGARC_MEMDESC_CACHE( 0x00000000, 0x01000000 ), // Main memory 60x SDRAM
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63 CYGARC_MEMDESC_NOCACHEGUARD( 0x04000000, 0x00400000 ), // Local Bus SDRAM
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64 // The BCSR are actually only 8 registers, but they repeatedly map
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65 // into the 1 MB space described here.
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66 // The BAT register uses a Block Length of 4MB so that both the BCSRs
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67 // and the IMMR space is Managed thru the MMU. In fact, the ATM UNI
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68 // Proc. Control is also mapped into this block.
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69 // See MPC8260 PowerQUICC II ADS User's Manual, p. 3-35, note 2
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70 CYGARC_MEMDESC_NOCACHE( 0x04500000, 0x00400000 ), // BCSR registers
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71 CYGARC_MEMDESC_NOCACHE( 0xff800000, 0x00800000 ), // ROM region
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72
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73 CYGARC_MEMDESC_TABLE_END
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74 };
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75
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76 static volatile CYG_WORD *BCSR0 = (CYG_WORD *)0x04500000;
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77 static volatile CYG_WORD *BCSR1 = (CYG_WORD *)0x04500004;
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78 static volatile CYG_WORD *BCSR2 = (CYG_WORD *)0x04500008;
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79
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80 // Some macros used for debugging
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81 #define GREEN_LED_ON (*BCSR0 &= 0xFDFFFFFF)
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82 #define RED_LED_OFF (*BCSR0 |= 0x01000000)
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83 #define GREEN_LED_OFF (*BCSR0 |= 0x02000000)
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84 #define RED_LED_ON (*BCSR0 &= 0xFEFFFFFF)
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85
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86 //--------------------------------------------------------------------------
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87 // Platform init code.
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88 void
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89 hal_platform_init(void)
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90 {
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91 /*----------------------------------------------------------------------*/
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92 /* Enable RS232 interface on the VADS board via BCSR1. BCSR1 is a Board */
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93 /* Control and Status Register that resides in a programmable logic */
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94 /* device. */
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95 /*----------------------------------------------------------------------*/
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96
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97 //*BCSR1 &= 0xFFFFFFFD; /* Assert the RS232EN_1/ bit */
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98 /* The Pilot revision of the MPC8260ADS board has moved the 8 bits
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99 * in the 32 bit BCSR0 and BCSR1 from D24-D31 to D0-D7.
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100 */
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101 *BCSR1 &= 0xFDFFFFFF; /* Assert the RS232EN_1/ bit */
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102
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103 hal_if_init();
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104 }
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105
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106 // EOF hal_aux.c