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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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // plf_misc.c
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4 //
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5 // HAL platform miscellaneous functions
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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): nickg
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43 // Contributors: nickg, jlarmour
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44 // Date: 1999-01-21
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45 // Purpose: HAL miscellaneous functions
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46 // Description: This file contains miscellaneous functions provided by the
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47 // HAL.
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //========================================================================*/
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52
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53 #include <pkgconf/hal.h>
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54
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55 #include <cyg/infra/cyg_type.h> // Base types
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56 #include <cyg/infra/cyg_trac.h> // tracing macros
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57 #include <cyg/infra/cyg_ass.h> // assertion macros
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58
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59 #include <cyg/hal/hal_arch.h> // architectural definitions
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60
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61 #include <cyg/hal/hal_intr.h> // Interrupt handling
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62
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63 #include <cyg/hal/hal_cache.h> // Cache handling
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64
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65 /*------------------------------------------------------------------------*/
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66
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67 extern void patch_dbg_syscalls(void * vector);
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68
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69 /*------------------------------------------------------------------------*/
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70
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71 void hal_platform_init(void)
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72 {
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73
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74 HAL_ICACHE_INVALIDATE_ALL();
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75 HAL_ICACHE_ENABLE();
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76 HAL_DCACHE_INVALIDATE_ALL();
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77 HAL_DCACHE_ENABLE();
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78
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79 #if !defined(CYGHWR_HAL_MIPS_TX39_JMR3904_ENABLE_TOE)
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80
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81 HAL_TX39_DEBUG_TOE_DISABLE();
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82
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83 #else
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84
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85 HAL_TX39_DEBUG_TOE_ENABLE();
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86
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87 #endif
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88
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89 #if defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && \
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90 defined(CYGSEM_HAL_USE_ROM_MONITOR_CygMon)
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91 {
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92 patch_dbg_syscalls( (void *)(&hal_vsr_table[0]) );
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93 }
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94 #endif
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95
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96 }
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97
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98 /*------------------------------------------------------------------------*/
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99 /* Functions to support the detection and execution of a user provoked */
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100 /* program break. These are usually called from interrupt routines. */
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101
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102 cyg_bool cyg_hal_is_break(char *buf, int size)
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103 {
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104 while( size )
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105 if( buf[--size] == 0x03 ) return true;
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106
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107 return false;
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108 }
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109
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110 void cyg_hal_user_break( CYG_ADDRWORD *regs )
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111 {
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112 #if defined(CYGSEM_HAL_USE_ROM_MONITOR_CygMon)
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113 // The following code should be at the very start of this function so
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114 // that it can access the RA register before it is saved and reused.
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115 register CYG_WORD32 ra;
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116 asm volatile ( "move %0,$31;" : "=r" (ra) );
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117
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118 {
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119 typedef void install_bpt_fn(void *epc);
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120 CYG_WORD32 pc;
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121 HAL_SavedRegisters *sreg = (HAL_SavedRegisters *)regs;
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122 install_bpt_fn *ibp = (install_bpt_fn *)hal_vsr_table[35];
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123
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124 if( regs == NULL ) pc = ra;
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125 else pc = sreg->pc;
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126
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127 if( ibp != NULL ) ibp((void *)pc);
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128 }
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129
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130 #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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131
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132 {
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133 extern void breakpoint(void);
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134 breakpoint();
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135 }
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136
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137 #else
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138
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139 HAL_BREAKPOINT(breakinst);
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140
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141 #endif
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142
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143 }
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144
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145 /*------------------------------------------------------------------------*/
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146 /* Control C ISR support */
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147
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148 #if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT)
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149
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150 #define DIAG_BASE 0xfffff300
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151 #define DIAG_SLCR (DIAG_BASE+0x00)
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152 #define DIAG_SLSR (DIAG_BASE+0x04)
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153 #define DIAG_SLDICR (DIAG_BASE+0x08)
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154 #define DIAG_SLDISR (DIAG_BASE+0x0C)
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155 #define DIAG_SFCR (DIAG_BASE+0x10)
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156 #define DIAG_SBRG (DIAG_BASE+0x14)
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157 #define DIAG_TFIFO (DIAG_BASE+0x20)
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158 #define DIAG_RFIFO (DIAG_BASE+0x30)
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159
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160 #define BRG_T0 0x0000
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161 #define BRG_T2 0x0100
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162 #define BRG_T4 0x0200
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163 #define BRG_T5 0x0300
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164
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165 struct Hal_SavedRegisters *hal_saved_interrupt_state;
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166
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167 void hal_ctrlc_isr_init(void)
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168 {
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169 CYG_WORD16 dicr;
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170
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171 HAL_READ_UINT16( DIAG_SLDICR , dicr );
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172 dicr = 0x0001;
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173 HAL_WRITE_UINT16( DIAG_SLDICR , dicr );
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174
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175 HAL_INTERRUPT_SET_LEVEL( CYGHWR_HAL_GDB_PORT_VECTOR, 1 );
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176 HAL_INTERRUPT_UNMASK( CYGHWR_HAL_GDB_PORT_VECTOR );
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177 }
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178
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179 cyg_uint32 hal_ctrlc_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
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180 {
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181 char c;
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182 CYG_WORD16 disr;
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183
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184 HAL_INTERRUPT_ACKNOWLEDGE( CYGHWR_HAL_GDB_PORT_VECTOR );
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185
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186 HAL_READ_UINT16( DIAG_SLDISR , disr );
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187
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188 if( disr & 0x0001 )
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189 {
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190
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191 disr = disr & ~0x0001;
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192
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193 HAL_READ_UINT8( DIAG_RFIFO, c );
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194
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195 HAL_WRITE_UINT16( DIAG_SLDISR , disr );
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196
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197 if( cyg_hal_is_break( &c , 1 ) )
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198 cyg_hal_user_break( (CYG_ADDRWORD *)hal_saved_interrupt_state );
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199 }
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200
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201 return 2;
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202 }
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203
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204 #endif
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205
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206 /*------------------------------------------------------------------------*/
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207 /* End of plf_misc.c */