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devs/nand/micron_mt29: Remove defunct references (in comments) to mt29f2g08_oob_ecc.
author Ross Younger <wry@ecoscentric.com>
date Sun, 18 Jan 2015 17:59:01 +1300
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, pjo
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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 #include <cyg/hal/plf_misc.h>
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66
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67 #include <cyg/hal/hal_io.h>
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68
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69 #ifdef CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT
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70 #include <cyg/hal/hal_if.h>
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71 #endif
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72
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73 #ifdef CYGPKG_KERNEL
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74 #include <pkgconf/kernel.h>
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75 #include <cyg/kernel/ktypes.h>
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76 #include <cyg/kernel/kapi.h>
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77 #endif /* CYGPKG_KERNEL */
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78
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79 /*------------------------------------------------------------------------*/
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80
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81 extern void patch_dbg_syscalls(void * vector);
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82
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83 extern void hal_pcmb_init(void);
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84
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85 #ifdef CYGPKG_HAL_SMP_SUPPORT
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86 __externC void cyg_hal_smp_init(void);
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87 #endif
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88
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89 CYG_ADDRWORD cyg_hal_pc_memsize_base;
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90 CYG_ADDRWORD cyg_hal_pc_memsize_extended;
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91
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92 //----------------------------------------------------------------------------
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93 // ISR tables
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94
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95 volatile CYG_ADDRESS hal_interrupt_handlers[CYGNUM_HAL_ISR_COUNT];
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96 volatile CYG_ADDRWORD hal_interrupt_data[CYGNUM_HAL_ISR_COUNT];
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97 volatile CYG_ADDRESS hal_interrupt_objects[CYGNUM_HAL_ISR_COUNT];
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98
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99 //-----------------------------------------------------------------------------
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100 // IDT interrupt gate initialization
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101
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102 externC void cyg_hal_pc_set_idt_entry(CYG_ADDRESS routine,short *idtEntry)
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103 {
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104
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105 idtEntry[0]=routine & 0xFFFF;
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106 idtEntry[1]=8;
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107 idtEntry[2]=0x8E00;
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108 idtEntry[3]=routine >> 16;
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109 }
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110
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111 /*------------------------------------------------------------------------*/
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112
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113 void hal_platform_init(void)
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114 {
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115 int vector;
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116
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117 HAL_ICACHE_INVALIDATE_ALL();
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118 HAL_ICACHE_ENABLE();
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119 HAL_DCACHE_INVALIDATE_ALL();
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120 HAL_DCACHE_ENABLE();
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121
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122 #ifdef CYGPKG_HAL_I386_PC_MEMSIZE_HARDCODE
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123 cyg_hal_pc_memsize_base = CYGNUM_HAL_I386_PC_MEMSIZE_BASE;
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124 cyg_hal_pc_memsize_extended = CYGNUM_HAL_I386_PC_MEMSIZE_EXTENDED;
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125 #endif
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126
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127 #ifdef CYGPKG_HAL_I386_PC_MEMSIZE_BIOS
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128 cyg_uint8 lo,hi;
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129
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130 HAL_READ_CMOS( 0x15, lo );
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131 HAL_READ_CMOS( 0x16, hi );
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132
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133 cyg_hal_pc_memsize_base = ((hi<<8)+lo)*1024;
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134
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135 #ifndef CYG_HAL_STARTUP_ROM
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136 // If we started up under a BIOS, then it will have put
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137 // the discovered extended memory size in CMOS bytes 30/31.
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138 HAL_READ_CMOS( 0x30, lo );
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139 HAL_READ_CMOS( 0x31, hi );
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140 #else
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141 //
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142 HAL_READ_CMOS( 0x17, lo );
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143 HAL_READ_CMOS( 0x18, hi );
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144 #endif
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145
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146 cyg_hal_pc_memsize_extended = ((hi<<8)+lo)*1024;
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147 #endif
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148
161
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149 // Call motherboard init function
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150 hal_pcmb_init();
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151
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152 // ISR table setup: plant the default ISR in all interrupt handlers
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153 // and the default interrupt VSR in the equivalent VSR table slots.
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154 for (vector = CYGNUM_HAL_ISR_MIN; vector <= CYGNUM_HAL_ISR_MAX; vector++)
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155 {
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156 cyg_uint32 index;
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157 HAL_TRANSLATE_VECTOR( vector, index );
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158 hal_interrupt_handlers[index] = (CYG_ADDRESS) HAL_DEFAULT_ISR;
182
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159 HAL_VSR_SET( vector, &__default_interrupt_vsr, NULL );
161
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160 }
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161
182
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162 #if !defined(CYG_HAL_STARTUP_RAM)
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163 for (vector = CYGNUM_HAL_EXCEPTION_MIN;
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164 vector <= CYGNUM_HAL_EXCEPTION_MAX;
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165 vector++)
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166 {
440
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167 #if defined(CYGHWR_HAL_I386_FPU_SWITCH_LAZY)
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168 // If we are doing lazy FPU switching, the FPU switch VSR has
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169 // already been installed, so avoid overwriting it.
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170 if( vector != CYGNUM_HAL_VECTOR_NO_DEVICE )
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171 #endif
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172 {
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173 HAL_VSR_SET( vector, &__default_exception_vsr, NULL );
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174 }
182
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175 }
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176 #endif
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177
161
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178 #ifdef CYGPKG_REDBOOT
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179
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180 // Start the timer device running if we are in a RedBoot
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181 // configuration.
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182
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183 HAL_CLOCK_INITIALIZE( CYGNUM_HAL_RTC_PERIOD );
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184
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185 #endif
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186
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187 hal_if_init();
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188
440
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189 #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) || \
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190 defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
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191 {
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192 void hal_ctrlc_isr_init(void);
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193 hal_ctrlc_isr_init();
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194 }
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195
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196 #endif
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197
208
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198 #ifdef CYGPKG_HAL_SMP_SUPPORT
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199
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200 cyg_hal_smp_init();
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201
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202 #endif
182
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203
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204 }
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205
1966
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206 cyg_uint8 *hal_i386_mem_real_region_top( cyg_uint8 *regionend )
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207 {
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208 CYG_ASSERT( cyg_hal_pc_memsize_base > 0 , "No base RAM size set!");
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209 CYG_ASSERT( cyg_hal_pc_memsize_extended > 0 , "No extended RAM size set!");
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210
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211 if( (CYG_ADDRESS)regionend <= 0x000A0000 )
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212 regionend = (cyg_uint8 *)cyg_hal_pc_memsize_base;
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213 else if( (CYG_ADDRESS)regionend >= 0x00100000 )
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214 regionend = (cyg_uint8 *)cyg_hal_pc_memsize_extended+0x00100000;
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215
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216 return regionend;
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217 }
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218
76
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219 /*------------------------------------------------------------------------*/
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220
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221 void hal_pc_reset(void)
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222 {
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223 /* Use Intel's IDT triple-fault trick. */
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224 asm("movl $badIdt, %eax\n"
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225 "lidt (%eax)\n"
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226 "int $3\n"
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227 "hlt\n"
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228
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229 ".align 4\n"
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230
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231 "badIdt:\n"
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232 ".word 0\n"
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233 ".long 0\n"
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234 ) ;
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235 }
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236
161
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237 /*------------------------------------------------------------------------*/
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238
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239 void
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240 hal_delay_us(int us)
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241 {
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242 while( us > 0 )
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243 {
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244 cyg_uint32 us1 = us;
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245 cyg_int32 ticks;
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246 cyg_uint32 cval1, cval2;
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247
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248 // Wait in bursts of 1s to avoid overflow problems with the
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249 // multiply by 1000 below.
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250
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251 if( us1 > 1000000 )
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252 us1 = 1000000;
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253
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254 us -= us1;
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255
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256 // The PC clock ticks at 838ns per tick. So we convert the us
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257 // value we were given to clock ticks and wait for that many
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258 // to pass.
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259
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260 ticks = (us1 * 1000UL) / 838UL;
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261
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262 HAL_CLOCK_READ( &cval1 );
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263
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264 // We just loop, waiting for clock ticks to happen,
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265 // and subtracting them from ticks when they do.
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266
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267 while( ticks > 0 )
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268 {
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269 cyg_int32 diff;
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270 HAL_CLOCK_READ( &cval2 );
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271
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272 diff = cval2 - cval1;
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273
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274 // Cope with counter wrap-around.
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275 if( diff < 0 )
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276 diff += CYGNUM_HAL_RTC_PERIOD;
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277
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278 ticks -= diff;
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279 cval1 = cval2;
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280
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281 }
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282 }
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283 }
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284
76
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285
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286 /*------------------------------------------------------------------------*/
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287 /* End of plf_misc.c */