2 FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License** as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 ***************************************************************************
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29 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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31 * This is a concise, step by step, 'hands on' guide that describes both *
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32 * general multitasking concepts and FreeRTOS specifics. It presents and *
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33 * explains numerous examples that are written using the FreeRTOS API. *
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34 * Full source code for all the examples is provided in an accompanying *
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37 ***************************************************************************
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38 ***************************************************************************
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40 Please ensure to read the configuration and relevant port sections of the
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41 online documentation.
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43 http://www.FreeRTOS.org - Documentation, latest information, license and
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46 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 licensing and training services.
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58 .extern __text_start
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61 .equ MCF5XXX_RAMBAR_SPV, 0x00000200
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62 .equ MCF5XXX_RAMBAR_V, 0x00000001
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67 .word 0x2C80 /* write to CSR */
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73 /* disable all interrupts on startup. */
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76 /* prepare internal SRAM. */
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78 ori.l #( MCF5XXX_RAMBAR_SPV | MCF5XXX_RAMBAR_V ), d0
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81 /* prepare stack and frame pointer. */
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85 /* initialize hardware. */
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88 /* zero out the bss section. */
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89 move.l #__bss_start, d1
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102 /* Relocate the data section. */
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103 move.l #__data_load_start, %a0 /* .data in ROM */
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104 move.l #copy_start, %a1 /* .data in RAM */
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106 /* Test if the two sections overlap. This is the case when we are working
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107 * with the debugger and the debugger loads the .data section.
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112 /* Have we already copied everything. */
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113 cmpa.l #__data_load_end, %a0
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115 move.b (%a0)+, (%a1)+
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121 move.l #__FINI_SECTION__, -(%sp)
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123 jsr __INIT_SECTION__
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125 /* call main(int argc, char *argv[] */
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132 /* stop on exit from main. */
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