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io/nand: Deparent CYGPKG_IO_NAND from CYGPKG_IO, for consistency in the configtool with most other packages.
author Ross Younger <wry@ecoscentric.com>
date Fri, 16 Jan 2015 11:39:54 +1300
parents 7905ed422fdf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # ====================================================================
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2 #
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3 # nand.cdl
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4 #
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5 # eCos NAND flash library
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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) 2009 eCosCentric Limited.
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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): wry
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43 # Date: 2009-02-23
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44 #
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45 #####DESCRIPTIONEND####
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46 #
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47 # ====================================================================
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48
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49
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50 cdl_package CYGPKG_IO_NAND {
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51 display "NAND Flash access library"
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52 include_dir cyg/nand
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53 doc ref/nand.html
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54 description "
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55 This package provides support for NAND flash devices. It provides
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56 both an application and a device interface. Further
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57 platform-specific package(s) are required to implement drivers for
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58 the particular devices present."
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59
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60 requires CYGINT_ISO_ERRNO_CODES
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61 requires CYGPKG_ISOINFRA
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62 requires CYGPKG_LIBC_STRING
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63 requires CYGINT_ISO_STRING_MEMFUNCS
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64 requires CYGPKG_LIBC_STDLIB
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65
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66 # If YAFFS is loaded, ensure that is knows how to drive us.
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67 requires ( CYGPKG_FS_YAFFS implies CYGSEM_FS_YAFFS_NAND_APPINTERFACE > 1)
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68
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69 compile nand.c nand_bbt.c nand_oob.c util.c
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70 compile nand_ecc_mtd.c
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71 compile nand_ecc_mtd_fast.c
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72 compile -library=libextras.a nandinit.cxx
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73
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74 cdl_option CYGSEM_IO_NAND_APPINTERFACE_VERSION {
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75 display "NAND application interface version"
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76 flavor data
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77 calculated 2
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78 description "The current version of the application
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79 interface provided by
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80 the NAND layer. As the NAND device interface evolves, this
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81 version number will be incremented; applications may require
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82 that the layer provide a certain level in order
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83 to function correctly."
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84 }
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85
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86 cdl_option CYGSEM_IO_NAND_INTERFACE_VERSION {
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87 display "NAND device interface version"
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88 flavor data
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89 calculated 2
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90 description "The current version of the device interface
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91 provided by
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92 the NAND layer. As the NAND device interface evolves, this
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93 version number will be incremented; devices may require
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94 that the infrastructure provide a certain level in order
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95 to function correctly."
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96 }
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97
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98 cdl_component CYGPKG_IO_NAND_OPTIONS {
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99 display "NAND library build options"
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100 flavor none
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101 description "
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102 Package specific build options including control over
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103 compiler flags used only in building the NAND library
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104 flash driver."
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105
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106 cdl_option CYGPKG_IO_NAND_CFLAGS_ADD {
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107 display "Additional compiler flags"
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108 flavor data
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109 no_define
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110 default_value { "-Werror" }
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111 description "
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112 This option modifies the set of compiler flags for
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113 building the NAND flash library. These flags
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114 are used in addition to the set of global flags."
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115 }
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116 cdl_option CYGPKG_IO_NAND_CFLAGS_REMOVE {
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117 display "Suppressed compiler flags"
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118 flavor data
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119 no_define
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120 default_value { "" }
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121 description "
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122 This option modifies the set of compiler flags for
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123 building the NAND flash library. These flags
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124 are removed from the set of global flags if present."
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125 }
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126 }
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127
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128 cdl_interface CYGHWR_IO_NAND_DEVICE {
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129 display "Hardware NAND device drivers"
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130 requires { CYGHWR_IO_NAND_DEVICE >= 1 }
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131 description "
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132 This calculated option shows the number of NAND devices on
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133 the current platform. The generic NAND support is disabled
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134 unless at least one device is present."
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135 }
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136
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137 cdl_component CYGSEM_IO_NAND_DEBUG {
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138 display "NAND debug output"
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139 default_value 1
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140 description "
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141 The NAND library has the ability to report debugging information
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142 by sending it to a printf-like function.
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143 This option is the master switch for all such output.
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144 "
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145
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146 cdl_option CYGSEM_IO_NAND_DEBUG_FN_DEFAULT {
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147 display "Global output function"
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148 flavor data
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149 default_value { "cyg_nand_defaultprintf" }
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150 description "
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151 This is the default function to use to send debugging output
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152 from the NAND library.
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153 (It may be overridden by individual device drivers.)
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154 The default value is a wrapper to diag_printf.
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155 "
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156 }
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157
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158 cdl_option CYGSEM_IO_NAND_DEBUG_LEVEL {
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159 display "Debug chatter level"
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160 flavor data
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161 legal_values 0 to 9
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162 default_value 1
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163 description "
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164 This option configures the degree to which the NAND code will
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165 print status messages as various operations are undertaken.
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166 Setting it to zero disables the status chatter altogether.
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167 Messages, when enabled, are printed using the printf-like
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168 function provided when the library is initialised.
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169 (Note that serious problems are always reported via
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170 the output function, regardless of this setting.)"
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171 compile nand_chatter.c
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172 }
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173 }
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174
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175 cdl_option CYGSEM_IO_NAND_READONLY {
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176 display "NAND layer is read-only"
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177 flavor bool
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178 default_value 0
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179 description "
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180 Selecting this option will globally disable all code which
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181 writes to NAND devices."
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182 }
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183
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184 cdl_component CYGSEM_IO_NAND_USE_BBT {
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185 display "NAND layer uses bad-block tables"
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186 flavor bool
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187 default_value 1
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188 description "
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189 Select this option to instruct the NAND library to use
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190 a Bad Block Table to keep track of blocks marked bad
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191 at the factory and any bad blocks which may develop during
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192 the life of the device. This is strongly recommended."
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193
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194 cdl_option CYGSEM_IO_NAND_ALLOW_ERASE_WORNBAD {
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195 flavor bool
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196 default_value 0
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197 display "Allow worn-bad blocks to be erased"
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198 description "Normally, if a block is marked as worn-bad
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199 in the Bad Block Table, it cannot be read, written
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200 or erased. This option allows such blocks to be erased."
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201 }
2948
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202 }
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203
2930
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204 cdl_option CYGNUM_NAND_PAGEBUFFER {
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205 display "Largest page size to support"
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206 flavor data
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207 default_value 0
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208 description "
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209 This package requires a certain amount of RAM to use as a
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210 page buffer from time to time. This value is the
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211 size of that buffer. You should not normally require to
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212 edit this; it is affected by whichever NAND chip driver
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213 packages are present."
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214 }
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215
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216 cdl_option CYGNUM_NAND_MAX_READ_RETRIES {
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217 display "Automatic read retry limit"
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218 flavor data
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219 default_value 2
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220 description "
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221 Typical NAND chips may exhibit occasional bit errors,
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222 which may be transient. This library implements
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223 an Error Correcting Code in order to detect and
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224 automatically repair these. If you are unlucky,
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225 a combination of errors may cause an indication of
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226 an uncorrectable error, which would normally be returned to
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227 the caller as EIO. This setting causes the library
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228 to automatically retry a read, up to this many times,
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229 in the hope that the error is transient;
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230 set to 0 if you wish to disable this behaviour."
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231 }
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232
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233 cdl_option CYGNUM_NAND_MAX_PARTITIONS {
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234 display "Maximum number of partitions on a NAND chip"
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235 flavor data
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236 default_value 4
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237 legal_values 1 to 0x7fffffff
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238 description "
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239 Within every NAND device there are one or more logical partitions,
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240 akin to partitions on a hard drive. This setting is the
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241 largest number of partitions that the NAND library and
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242 drivers will support. The default, 4, should be enough for
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243 most purposes. (Higher settings consume more RAM at runtime.)
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244
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245 N.B. This setting does not configure how partitions are defined;
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246 that is set up in the platform HAL."
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247 }
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248
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249 # We do not currently provide CDL options to switch the choice of
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250 # ECC algorithm, OOB area layout and BBT semantics on and off.
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251 # This could easily be added in future if there was a demand for it.
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252 # Bear in mind that as well as conditioning the code in/out, each
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253 # chip instance must select its own semantics individually (in case
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254 # of multiple devices with different requirements), so there may
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255 # well not be a need for a top-level switch.
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256
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257 cdl_option CYGBLD_IO_NAND_BUILD_UTILS {
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258 display "Build NAND library utilities"
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259 default_value 0
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260 no_define
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261 description "If set, builds the NAND library utilities at the
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262 same time as the tests. Beware that misuse of these utilities
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263 can seriously mess up your NAND chip; they should not be
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264 played with lightly."
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265 }
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266
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267 cdl_option CYGSEM_IO_NAND_INSTRUMENT_TIMING {
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268 display "Instrument NAND call timings"
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269 default_value 0
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270 description "This option enables timing instrumentation within
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271 the NAND library. It is intended only to assist driver
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272 authors during development.
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273 Normal users should not set this option."
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274 }
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275
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276 cdl_option CYGBLD_IO_NAND_UTILS {
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277 display "The list of utilities to build."
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278 flavor data
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279 calculated { " utils/erasenand utils/erase_bbt_dangerous" }
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280 no_define
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281 }
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282
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283 cdl_option CYGPKG_IO_NAND_TESTS {
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284 display "NAND library tests"
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285 flavor data
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286 no_define
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287 calculated { "tests/nandunit tests/nand_readlimits tests/nand_readwrite"
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288 . " tests/nand_rwbenchmark tests/nand_sweccwalk tests/nand_eccequiv"
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289 . (CYGBLD_IO_NAND_BUILD_UTILS ? CYGBLD_IO_NAND_UTILS : "")
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290 }
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291 description "This special option specifies the set of NAND
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292 library tests (and utilities, if enabled) to build."
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293 }
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294
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295 cdl_option CYGNUM_IO_NAND_TEST_PARTITION {
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296 display "The NAND partition to use for tests."
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297 flavor data
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298 default_value 0
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299 legal_values 0 to CYGNUM_NAND_MAX_PARTITIONS-1
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300 description "Some of the NAND library tests need to write to
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301 a device. This controls which partition to use."
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302 }
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303
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304 cdl_option CYGSEM_IO_NAND_ECC_SPLIT_FUNCTION {
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305 flavor bool
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306 calculated 1
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307 display "ECC interface has split calculate function"
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308 description "This marker option signals to NAND drivers that the
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309 split calculate-ECC function is present. Some require it."
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310 no_define
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311 }
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312
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313 }