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Merge from eCos master repository on 2001-07-28-00:17:32-BST
author jlarmour
date Sun, 29 Jul 2001 02:00:07 +0000
parents 11b54a94cf58
children 4c750ce71ae3
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435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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1 # ====================================================================
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2 #
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3 # hal.cdl
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4 #
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5 # HAL configuration data
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6 #
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7 # ====================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
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30 #####COPYRIGHTEND####
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31 # ====================================================================
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32 ######DESCRIPTIONBEGIN####
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33 #
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34 # Author(s): bartv
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35 # Original data: nickg,jskov,jlarmour
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36 # Contributors: dmoseley
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37 # Date: 1999-06-13
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38 #
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39 #####DESCRIPTIONEND####
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40 #
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41 # ====================================================================
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42
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43 cdl_package CYGPKG_HAL {
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44 display "eCos HAL"
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45 include_dir cyg/hal
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46 description "
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47 The eCos HAL package provide a porting layer for
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48 higher-level parts of the system such as the kernel and the
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49 C library. Each installation should have HAL packages for
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50 one or more architectures, and for each architecture there
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51 may be one or more supported platforms. It is necessary to
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52 select one target architecture and one platform for that
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53 architecture. There are also a number of configuration
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54 options that are common to all HAL packages."
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55 doc redirect/the-ecos-hardware-abstraction-layer-hal.html
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56
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57 compile generic-stub.c thread-packets.c hal_stub.c drv_api.c bplist-dynamic.c
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58 compile -library=libextras.a dummy.c
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59
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60 make -priority 250 {
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61 <PREFIX>/lib/extras.o: <PREFIX>/lib/libextras.a
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62 $(CC) $(CFLAGS) -nostdlib -Wl,-r -Wl,--whole-archive -o $@ $<
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63 }
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64
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66 cdl_component CYGPKG_HAL_COMMON {
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67 display "Platform-independent HAL options"
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68 flavor none
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69 description "
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70 A number of configuration options are common to most or all
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71 HAL packages, for example options controlling how much state
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72 should be saved during a context switch. The implementations
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73 of these options will vary from architecture to architecture."
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74
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75 script common.cdl
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76 }
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77
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78 cdl_component CYGPKG_HAL_COMMON_INTERRUPTS {
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79 display "HAL interrupt handling"
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80 flavor none
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81 description "
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82 A number of configuration options related to interrupt
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83 handling are common to most or all HAL packages, even though
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84 the implementations will vary from architecture to
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85 architecture."
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86
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87 script interrupts.cdl
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88 }
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89
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90 cdl_component CYGPKG_HAL_COMMON_CONTEXT {
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91 display "HAL context switch support"
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92 flavor none
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93 description "
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94 A number of configuration options related to thread contexts
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95 are common to most or all HAL packages, even though the
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96 implementations will vary from architecture to architecture."
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97
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98 cdl_option CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM {
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99 display "Use minimum thread context"
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100 parent CYGPKG_HAL_COMMON_CONTEXT
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101 default_value 1
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102 description "
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103 The thread context switch code can exploit the calling
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104 conventions defined for a given architecture to reduce the
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105 amount of state that has to be saved during a context
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106 switch. Generally this improves performance and reduces
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107 code size. However it can make source-level debugging more
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108 difficult."
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109 }
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110 }
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111
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112 cdl_component CYGPKG_HAL_CACHE_CONTROL {
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113 display "Explicit control over cache behaviour"
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114 flavor none
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115 no_define
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116 description "
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117 These options let the default behaviour of the caches
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118 be easily configurable."
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119
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120 cdl_option CYGSEM_HAL_ENABLE_DCACHE_ON_STARTUP {
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121 display "Enable DATA cache on startup"
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122 default_value 1
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123 description "
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124 Enabling this option will cause the data cache to be enabled
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125 as soon as practicable when eCos starts up. One would choose
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126 to disable this if the data cache cannot safely be turned on,
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127 such as a case where the cache(s) require additional platform
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128 specific setup."
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129 }
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130
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131 cdl_option CYGSEM_HAL_ENABLE_ICACHE_ON_STARTUP {
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132 display "Enable INSTRUCTION cache on startup"
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133 default_value 1
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134 description "
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135 Enabling this option will cause the instruction cache to be enabled
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136 as soon as practicable when eCos starts up. One would choose
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137 to disable this if the instruction cache cannot safely be turned on,
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138 such as a case where the cache(s) require additional platform
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139 specific setup."
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140 }
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141 }
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142
76
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143 cdl_component CYGPKG_HAL_DEBUG {
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144 display "Source-level debugging support"
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145 flavor none
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146 description "
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147 If the source level debugger gdb is to be used for debugging
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148 application code then it may be necessary to configure in support
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149 for this in the HAL."
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150
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151 script debugging.cdl
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152 }
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153
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154 cdl_component CYGPKG_HAL_ROM_MONITOR {
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155 display "ROM monitor support"
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156 flavor none
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157 no_define
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158 description "
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159 Support for ROM monitors can be built in to your application.
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160 It may also be relevant to build your application as a ROM monitor
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161 itself. Such options are contained here if relevant for your chosen
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162 platform. The options and ROM monitors available to choose are
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163 platform-dependent."
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164
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165
101
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166
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167 cdl_interface CYGINT_HAL_VIRTUAL_VECTOR_SUPPORT {
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168 display "Target has virtual vector support"
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169 no_define
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170 }
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171
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172
156
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173 cdl_interface CYGINT_HAL_VIRTUAL_VECTOR_SUPPORT_NOT_GUARANTEED {
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174 display "The platform port predates virtual vectors"
101
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175 no_define
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176 description "
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177 Many platform HALs have adopted the virtual vector support
156
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178 only after its introduction. On those platforms, old ROM
101
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179 monitors will not provide the necessary services - and
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180 so the use of these services should be disabled per default.
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181 Newer ports, however, guarantee to provide the necessary
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182 services in all ROM monitors, and so default to use the
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183 services."
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184 }
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185
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186 cdl_component CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT {
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187 display "Enable use of virtual vector calling interface"
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188 active_if CYGINT_HAL_VIRTUAL_VECTOR_SUPPORT
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189 calculated 1
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190 description "
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191 Virtual vector support allows the HAL to let the ROM
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192 monitor handle certain operations. The virtual vector table
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193 defines a calling interface between applications running in
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194 RAM and the ROM monitor."
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195 compile hal_if.c hal_misc.c
151
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196
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197
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198 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_INHERIT_CONSOLE {
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199 display "Inherit console settings from ROM monitor"
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200 active_if CYGSEM_HAL_USE_ROM_MONITOR
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201 default_value { !CYGINT_HAL_VIRTUAL_VECTOR_SUPPORT_NOT_GUARANTEED \
151
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202 && !CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_COMMS }
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203 description "
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204 When this option is set, the application will inherit
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205 the console as set up by the ROM monitor. This means
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206 that the application will use whatever channel and
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207 mangling style was used by the ROM monitor when
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208 the application was launched."
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209 }
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210
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211 cdl_option CYGPRI_HAL_VIRTUAL_VECTOR_DEBUG_CHANNEL_CONFIGURABLE {
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212 display "Debug channel is configurable"
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213 calculated { CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_COMMS }
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214 description "
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215 This option is a configuration hint - it is enabled
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216 when the HAL initialization code will make use
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217 of the debug channel configuration option."
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218 }
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219
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220 cdl_option CYGPRI_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL_CONFIGURABLE {
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221 display "Console channel is configurable"
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222 calculated { !CYGSEM_HAL_VIRTUAL_VECTOR_INHERIT_CONSOLE \
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223 && !CYGDBG_HAL_DIAG_TO_DEBUG_CHAN }
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224 description "
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225 This option is a configuration hint - it is enabled
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226 when the HAL initialization code will make use
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227 of the console channel configuration option."
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228 }
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229
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230
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231 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE {
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232 display "Initialize whole of virtual vector table"
156
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233 default_value { CYG_HAL_STARTUP != "RAM" || !CYGSEM_HAL_USE_ROM_MONITOR || CYGINT_HAL_VIRTUAL_VECTOR_SUPPORT_NOT_GUARANTEED }
151
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234 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_ICTRL
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235 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_RESET
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236 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DELAY_US
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237 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_CACHE
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238 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DATA
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239 requires CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_COMMS
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240 description "
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241 This option will cause the whole of the virtual
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242 vector table to be initialized with dummy values on
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243 startup. When this option is enabled, all the
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244 options below must also be enabled - or the
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245 table would be empty when the application
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246 launches.
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247
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248 On targets where older ROM monitors without
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249 virtual vector support may still be in use, it is
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250 necessary for RAM applictions to initialize the
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251 table (since all HAL diagnostics and debug IO
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252 happens via the table). The default setting of
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253 this option will see to this, but it is still
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254 possible to override the option when a target with
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255 a newer ROM monitor is used."
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256 }
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257
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258 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT {
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259 display "Claim virtual vector table entries by default"
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260 active_if !CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE
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261 default_value 1
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262 description "
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263 By default most virtual vectors will be claimed by
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264 RAM startup configurations, meaning that the RAM
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265 application will provide the services. The
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266 exception is COMMS support (HAL
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267 diagnostics/debugging IO) which is left in the
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268 control of the ROM monitor.
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269
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270 The reasoning behind this is to get as much of the
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271 code exercised during regular development so it
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272 is known to be working the few times a new ROM
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273 monitor or a ROM production configuration is used
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274 - COMMS are excluded only by necessity in order to
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275 avoid breaking an existing debugger connections
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276 (there may be ways around this).
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277
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278 For production RAM configurations this option can
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279 be switched off, causing the appliction to rely on
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280 the ROM monitor for these services, thus
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281 saving some space.
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282
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283 Individual vectors may also be left unclaimed,
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284 controlled by the below options (meaning that the
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285 associated service provided by the ROM monitor
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286 will be used)."
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287 }
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288
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289 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_ICTRL {
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290 display "Claim ictrl/exc virtual vectors"
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291 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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292 || CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT }
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293 description "
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294 This option will cause the ictrl/exc virtual
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295 vectors to be claimed. These are pointers to
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296 the HAL interrupt handlers table and the HAL VSR
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297 table."
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298 }
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299
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300 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_RESET {
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301 display "Claim reset virtual vectors"
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302 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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303 || CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT }
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304 description "
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305 This option will cause the reset and kill_by_reset
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306 virtual vectors to be claimed."
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307 }
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308
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309 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DELAY_US {
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310 display "Claim delay_us virtual vector"
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311 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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312 || CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT }
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313 description "
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314 This option will cause the delay_us
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315 virtual vector to be claimed."
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316 }
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317
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318 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_CACHE {
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319 display "Claim cache virtual vectors"
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320 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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321 || CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT }
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322 description "
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323 This option will cause the cache virtual vectors
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324 to be claimed."
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325 }
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326
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327 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DATA {
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328 display "Claim data virtual vectors"
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329 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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330 || CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT }
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331 description "
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332 This option will cause the data virtual vectors
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333 to be claimed. These are (unused at present)
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334 pointers to CPU, board and debug information."
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335 }
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336
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337 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_COMMS {
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338 display "Claim comms virtual vectors"
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339 default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE \
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340 || CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS }
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341 description "
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342 This option will cause the communication tables
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343 that are part of the virtual vectors mechanism to
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344 be claimed. Note that doing this may cause an
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345 existing ROM monitor communication connection to
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346 be closed. For this reason, the option is disabled
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347 per default for normal application
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348 configurations."
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349 }
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350
101
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351 cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_DIAG {
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352 display "Do diagnostic IO via virtual vector table"
151
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353 calculated 1
101
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354 description "
151
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355 All HAL IO happens via the virtual vector table / comm
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356 tables when those tables are supported by the HAL.
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357
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358 If so desired, the low-level IO functions can
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359 still be provided by the RAM application by
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360 enabling the CLAIM_COMMS option."
101
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361 }
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362 }
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363
76
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364 cdl_option CYGBLD_BUILD_COMMON_GDB_STUBS {
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365 display "Build common GDB stub ROM image"
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366 default_value 0
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367 parent CYGBLD_GLOBAL_OPTIONS
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368 requires CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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369 no_define
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370 description "
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371 Unless a target board has specific requirements to the
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372 stub implementation, it can use a simple common stub.
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373 This option, which gets enabled by platform HALs as
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374 appropriate, controls the building of the common stub."
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375
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376 make -priority 315 {
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377 <PREFIX>/bin/gdb_module.img : <PACKAGE>/src/stubrom/stubrom.c <PREFIX>/lib/extras.o <PREFIX>/lib/libtarget.a <PREFIX>/lib/target.ld <PREFIX>/lib/vectors.o
76
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378 @sh -c "mkdir -p src/stubrom $(dir $@)"
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379 $(CC) -c $(INCLUDE_PATH) -Wp,-MD,deps.tmp -I$(dir $<) $(CFLAGS) -o src/stubrom/gdb_module.o $<
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380 @echo $@ ": \\" > $(notdir $@).deps
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381 @echo $(wildcard $(PREFIX)/lib/*) " \\" >> $(notdir $@).deps
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382 @tail +2 deps.tmp >> $(notdir $@).deps
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383 @echo >> $(notdir $@).deps
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384 @rm deps.tmp
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385 $(CC) $(LDFLAGS) -L$(PREFIX)/lib -Ttarget.ld -o $@ src/stubrom/gdb_module.o
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386 }
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387 }
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388
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389
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390 }
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391
156
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392 # Does platform need special I/O initializations?
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393 cdl_interface CYGINT_HAL_PLF_IF_INIT {
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394 display "Platform defined I/O channels."
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395 description "
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396 Platforms which provide additional I/O channels can implement
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397 this interface, indicating that the function plf_if_init()
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398 needs to be called."
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399 }
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400
174
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401 # Does platform provide IDE I/O macros?
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402 cdl_interface CYGINT_HAL_PLF_IF_IDE {
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403 display "Platform IDE I/O support."
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404 description "
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405 Platforms which provide IDE controllers can implement
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406 this interface, indicating that IDE I/O macros are
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407 available."
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408 }
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409
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410 define_proc {
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411 puts $::cdl_header "/***** proc output start *****/"
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412 puts $::cdl_header "#include <pkgconf/system.h>"
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413
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414 puts $::cdl_header "#include CYGBLD_HAL_TARGET_H"
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415 puts $::cdl_header "#ifdef CYGBLD_HAL_VARIANT_H"
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416 puts $::cdl_header "#include CYGBLD_HAL_VARIANT_H"
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417 puts $::cdl_header "#endif"
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418 puts $::cdl_header "#include CYGBLD_HAL_PLATFORM_H"
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419
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420 puts $::cdl_header "/****** proc output end ******/"
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421
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422 }
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423
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424 cdl_option CYGPKG_HAL_TESTS {
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425 display "Common HAL tests"
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426 flavor data
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427 no_define
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428 calculated { "tests/cache tests/context tests/intr tests/cpp1" }
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429 description "
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430 This option specifies the set of tests for the common HAL."
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431 }
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432 }