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annotate packages/io/flash/current/src/flash.c @ 1744:f854ed1e81db

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Fix reads on legacy devices
author bartv
date Sun, 21 Nov 2004 12:09:40 +0000
parents 0d824ba900cc
children 172edf8a96d8
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 // flash.c
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4 //
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5 // Flash programming
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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) 2004 Andrew Lunn
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12 // Copyright (C) 2004 eCosCentric Ltd.
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13 // Copyright (C) 2003 Gary Thomas
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 // for more details.
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24 //
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25 // You should have received a copy of the GNU General Public License along
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26 // with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use macros
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30 // or inline functions from this file, or you compile this file and link it
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31 // with other works to produce a work based on this file, this file does not
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32 // by itself cause the resulting work to be covered by the GNU General Public
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33 // License. However the source code for this file must still be made available
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34 // in accordance with section (3) of the GNU General Public License.
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35 //
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36 // This exception does not invalidate any other reasons why a work based on
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37 // this file might be covered by the GNU General Public License.
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38 //
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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40 // at http://sources.redhat.com/ecos/ecos-license/
208
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41 // -------------------------------------------
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42 //####ECOSGPLCOPYRIGHTEND####
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43 //==========================================================================
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44 //#####DESCRIPTIONBEGIN####
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45 //
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46 // Author(s): gthomas
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47 // Contributors: gthomas, Andrew Lunn, Bart Veer
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48 // Date: 2000-07-26
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49 // Purpose:
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50 // Description:
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51 //
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52 //####DESCRIPTIONEND####
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53 //
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54 //==========================================================================
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55
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56 #include <pkgconf/system.h>
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57 #include <pkgconf/io_flash.h>
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58 #ifdef CYGPKG_KERNEL
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59 #include <cyg/kernel/kapi.h>
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60 #endif
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61 #include <cyg/hal/hal_arch.h>
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62 #include <cyg/hal/hal_intr.h>
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63 #include <cyg/hal/hal_cache.h>
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64 #include <cyg/hal/hal_tables.h>
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65 #include <cyg/infra/cyg_ass.h>
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66 #include <string.h>
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67
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68 #define _FLASH_PRIVATE_
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69 #include <cyg/io/flash.h>
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70
143
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71 // When this flag is set, do not actually jump to the relocated code.
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72 // This can be used for running the function in place (RAM startup
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73 // only), allowing calls to diag_printf() and similar.
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74 #undef RAM_FLASH_DEV_DEBUG
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75 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
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76 # warning "Can only enable the flash debugging when configured for RAM startup"
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77 #endif
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78
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79 // Optional verbosity. Using a macro here avoids lots of ifdefs in the
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80 // rest of the code.
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81 #ifdef CYGSEM_IO_FLASH_CHATTER
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82 # define CHATTER(_dev_, _fmt_, ...) (*(_dev_)->pf)((_fmt_), ## __VA_ARGS__)
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83 #else
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84 # define CHATTER(_dev_, _fmt_, ...) CYG_EMPTY_STATEMENT
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85 #endif
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86
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87 // Per-thread locking. Again using macros avoids lots of ifdefs
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88 #ifdef CYGPKG_KERNEL
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89 # define LOCK_INIT(_dev_) cyg_mutex_init(&((_dev_)->mutex))
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90 # define LOCK(_dev_) cyg_mutex_lock(&((_dev_)->mutex))
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91 # define UNLOCK(_dev_) cyg_mutex_unlock(&((_dev_)->mutex))
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92 #else
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93 # define LOCK_INIT(_dev_) CYG_EMPTY_STATEMENT
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94 # define LOCK(_dev_) CYG_EMPTY_STATEMENT
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95 # define UNLOCK(_dev_) CYG_EMPTY_STATEMENT
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96 #endif
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97
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98 // Software write-protect. Very rarely used.
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99 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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100 # define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) \
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101 CYG_MACRO_START \
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102 if (plf_flash_query_soft_wp((_addr_), (_len_))) \
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103 return CYG_FLASH_ERR_PROTECT; \
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104 CYG_MACRO_END
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105 #else
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106 #define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) CYG_EMPTY_STATEMENT
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107 #endif
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108
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109 // Has the FLASH IO library been initialise?
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110 static bool init = false;
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111 // We have a linked list of flash drivers. This is the head of the
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112 // list
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113 static struct cyg_flash_dev *flash_head = NULL;
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114
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115 // This array contains entries for all flash devices that are
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116 // installed in the system.
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117 __externC struct cyg_flash_dev cyg_flashdevtab[];
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118 CYG_HAL_TABLE_BEGIN(cyg_flashdevtab, cyg_flashdev);
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119
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120 // end of the flashdev table
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121 __externC struct cyg_flash_dev cyg_flashdevtab_end;
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122 CYG_HAL_TABLE_END(cyg_flashdevtab_end, cyg_flashdev);
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123
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124 // Sort the linked list into ascending order of flash address. Use a
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125 // primitive ripple sort, but since we don't expect to have many
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126 // devices this should be OK.
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127 static void flash_sort(void)
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128 {
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129 bool moved;
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130 struct cyg_flash_dev *dev, **previous_next;
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131
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132 // If there is zero or one device, short cut
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133 if (flash_head == NULL || flash_head->next == NULL)
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134 return;
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135
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136 do {
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137 moved=false;
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138 for (dev=flash_head, previous_next=&flash_head;
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139 dev->next;
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140 previous_next = &dev->next, dev=dev->next ){
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141 if (dev->start > dev->next->start) {
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142 *previous_next=dev->next;
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143 dev->next = (*previous_next)->next;
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144 (*previous_next)->next = dev;
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145 moved=true;
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146 break;
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147 }
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148 }
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149 } while (moved);
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150 }
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151
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152 // Walk the linked list and see if there are any overlaps in the
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153 // addresses the devices claim to use using.
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154 static bool flash_check_overlap(void)
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155 {
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156 struct cyg_flash_dev *dev;
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157
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158 // If there is zero or one device, short cut
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159 if (flash_head == NULL || flash_head->next == NULL)
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160 return false;
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161
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162 for (dev=flash_head; dev->next; dev=dev->next){
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163 if (dev->end >= dev->next->start)
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164 return true;
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165 }
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166 return false;
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167 }
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168
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169 // Initialise all registered device. Any device that fails to
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170 // initialise we leave dev->init as false. Then sort the devices into
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171 // ascending order of address and put them into a linked list. Lastly
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172 // check if we have any overlap of the addresses.
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173 __externC int
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174 cyg_flash_init(cyg_flash_printf *pf)
154
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175 {
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176 int err;
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177 struct cyg_flash_dev * dev;
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178
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179 if (init) return CYG_FLASH_ERR_OK;
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180 init = true;
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181
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182 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
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183 dev->pf = pf;
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184 LOCK_INIT(dev);
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185
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186 err = dev->funs->flash_init(dev);
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187 if (err != CYG_FLASH_ERR_OK) {
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188 continue;
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189 }
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190 CYG_ASSERT(dev->funs, "No flash functions");
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191 CYG_ASSERT(dev->num_block_infos, "No number of block infoss");
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192 CYG_ASSERT(dev->block_info, "No block infos");
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193 CYG_ASSERT(!(((cyg_flashaddr_t)dev->block_info >= dev->start) &&
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194 ((cyg_flashaddr_t)dev->block_info < dev->end)),
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195 "Block info is in the flash");
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196 CYG_ASSERT(dev->funs->flash_erase_block, "No erase function");
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197 CYG_ASSERT(dev->funs->flash_program, "No program function");
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198 CYG_ASSERT(dev->funs->flash_hwr_map_error, "No hwr map error function");
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199 #ifdef CYGDBG_USE_ASSERTS
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200 {
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201 int i;
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202 cyg_flashaddr_t addr = dev->start;
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203 for (i = 0; i < dev->num_block_infos; i++) {
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204 addr += dev->block_info[i].block_size * dev->block_info[i].blocks;
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205 }
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206 CYG_ASSERT(dev->end == addr-1, "Invalid end address");
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207 }
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208 #endif
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209 dev->init = true;
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210 dev->next = flash_head;
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211 flash_head = dev;
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212 }
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213
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214 flash_sort();
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215
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216 if (flash_check_overlap()) {
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217 return CYG_FLASH_ERR_INVALID;
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218 }
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219 return CYG_FLASH_ERR_OK;
154
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220 }
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221
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222 // Is the address within one of the flash drivers?
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223 __externC int
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224 cyg_flash_verify_addr(const cyg_flashaddr_t address)
143
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225 {
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226 struct cyg_flash_dev * dev;
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227
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228 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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229
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230 for (dev = flash_head; dev; dev=dev->next) {
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231 if ((dev->start <= address) && (address <= dev->end))
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232 return CYG_FLASH_ERR_OK;
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233 }
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234 return CYG_FLASH_ERR_INVALID;
143
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235 }
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236
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237 // See if a range of FLASH addresses overlaps currently running code
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238 __externC bool cyg_flash_code_overlaps(const cyg_flashaddr_t start,
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239 const cyg_flashaddr_t end)
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240 {
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241 extern char _stext[], _etext[];
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242
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243 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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244 ((unsigned long)&_stext < (unsigned long)end)) ||
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245 (((unsigned long)&_etext >= (unsigned long)start) &&
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246 ((unsigned long)&_etext < (unsigned long)end)));
115
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247 }
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248
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249 // Return information about the Nth driver
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250 __externC int
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251 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info)
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diff changeset
252 {
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253 struct cyg_flash_dev * dev;
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254
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255 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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256
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257 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--)
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diff changeset
258 ;
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diff changeset
259 if (dev && !Nth) {
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diff changeset
260 info->start = dev->start;
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261 info->end = dev->end;
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262 info->num_block_infos = dev->num_block_infos;
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263 info->block_info = dev->block_info;
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264 return CYG_FLASH_ERR_OK;
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diff changeset
265 }
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266 return CYG_FLASH_ERR_INVALID;
115
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267 }
157
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268
1706
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269 // Return information about the flash at the given address
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diff changeset
270 __externC int
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271 cyg_flash_get_info_addr(cyg_flashaddr_t flash_base, cyg_flash_info_t * info)
115
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272 {
1706
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diff changeset
273 struct cyg_flash_dev *dev;
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diff changeset
274
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275 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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276
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277 for (dev = flash_head; dev ; dev=dev->next) {
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diff changeset
278 if ((dev->start <= flash_base) && ( flash_base <= dev->end)) {
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diff changeset
279 info->start = dev->start;
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280 info->end = dev->end;
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281 info->num_block_infos = dev->num_block_infos;
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282 info->block_info = dev->block_info;
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diff changeset
283 return CYG_FLASH_ERR_OK;
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284 }
1706
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diff changeset
285 }
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diff changeset
286 return CYG_FLASH_ERR_INVALID;
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diff changeset
287 }
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288
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diff changeset
289 #ifdef CYGPKG_KERNEL
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
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diff changeset
290 // Lock the mutex's for a range of addresses
1706
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291 __externC int
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diff changeset
292 cyg_flash_mutex_lock(const cyg_flashaddr_t from, const size_t len)
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diff changeset
293 {
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diff changeset
294 struct cyg_flash_dev * dev;
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diff changeset
295 int err;
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diff changeset
296
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297 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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diff changeset
298
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299 for (dev = flash_head; dev ; dev=dev->next) {
1741
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diff changeset
300 if ((dev->start <= from) && ( from <= dev->end)) {
1706
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diff changeset
301 cyg_mutex_lock(&dev->mutex);
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diff changeset
302 if (dev->end > from+len) {
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diff changeset
303 return CYG_FLASH_ERR_OK;
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diff changeset
304 } else { // Check off by one?
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diff changeset
305 //The region is bigger than this driver. Recurse
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diff changeset
306 err = cyg_flash_mutex_lock(dev->end+1, (len - (dev->end - from)));
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diff changeset
307 if (err != CYG_FLASH_ERR_OK) {
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diff changeset
308 // Something went wrong, unlock what we just locked
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diff changeset
309 cyg_mutex_unlock(&dev->mutex);
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diff changeset
310 }
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diff changeset
311 return err;
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312 }
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 195
diff changeset
313 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
314 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
315 return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
316 }
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
317
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
318 // Unlock the mutex's for a range of addresses
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
319 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
320 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, const size_t len)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
321 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
322 struct cyg_flash_dev * dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
323 int err;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
324
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
325 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
326
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
327 for (dev = flash_head; dev ; dev=dev->next) {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
328 if ((dev->start <= from) && ( from <= dev->end)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
329 cyg_mutex_unlock(&dev->mutex);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
330 if (dev->end > from+len) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
331 return CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
332 } else { // Check off by one?
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
333 //The region is bigger than this driver. Recurse
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
334 err = cyg_flash_mutex_unlock(dev->end+1, (len - (dev->end - from)));
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
335 return err;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
336 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
337 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
338 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
339 return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
340 }
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
341 #endif
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
342
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
343 // Return the size of the block which is at the given address
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
344 static size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
345 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
346 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
347 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
348 size_t offset;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
349
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
350
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
351 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device");
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
352
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
353 offset = addr - dev->start;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
354 for (i=0; i < dev->num_block_infos; i++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
355 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size))
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
356 return dev->block_info[i].block_size;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
357 offset = offset -
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
358 (dev->block_info[i].blocks * dev->block_info[i].block_size);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
359 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
360 CYG_FAIL("Programming error");
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
361 return 0;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
362 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
363
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
364 // Return the size of the block which is at the given address
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
365 __externC size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
366 cyg_flash_block_size(const cyg_flashaddr_t flash_base)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
367 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
368 struct cyg_flash_dev * dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
369
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
370 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
371
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
372 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
373 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
374 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
375 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
376 if (!dev) return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
377
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
378 return flash_block_size(dev, flash_base);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
379 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
380
1723
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
381 // Return the first address of a block. The flash might not be aligned
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
382 // in terms of its block size. So we have to be careful and use
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
383 // offsets.
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
384 static inline cyg_flashaddr_t
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
385 flash_block_begin(cyg_flashaddr_t addr, struct cyg_flash_dev *dev)
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
386 {
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
387 size_t block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
388 cyg_flashaddr_t offset;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
389
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
390 block_size = flash_block_size(dev, addr);
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
391
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
392 offset = addr - dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
393 offset = (offset / block_size) * block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
394 return offset + dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
395 }
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
396
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 195
diff changeset
397
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
398 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
399 cyg_flash_erase(const cyg_flashaddr_t flash_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
400 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
401 cyg_flashaddr_t *err_address)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
402 {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
403 cyg_flashaddr_t block, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
404 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
405 size_t erase_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
406 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
407 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
408
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
409 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
410
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
411 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
412 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
413 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
414 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
415 if (!dev) return CYG_FLASH_ERR_INVALID;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
416
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
417 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
418
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
419 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
420
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
421 // Check whether or not we are going past the end of this device, on
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
422 // to the next one. If so the next device will be handled by a
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
423 // recursive call later on.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
424 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
425 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
426 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
427 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
428 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
429 // erase can only happen on a block boundary, so adjust for this
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
430 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
431 erase_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
432
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
433 CHATTER(dev, "... Erase from %p-%p: ", (void*)block, (void*)end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
434
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
435 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
436 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
437 while (erase_count > 0) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
438 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
439 unsigned char *dp;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
440 bool erased = false;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
441 size_t block_size = flash_block_size(dev, block);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
442
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
443 // Pad to the block boundary, if necessary
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
444 if (erase_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
445 erase_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
446 }
1723
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
447
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
448 // If there is a read function it probably means the flash
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
449 // cannot be read directly.
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
450 if (!dev->funs->flash_read) {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
451 erased = true;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
452 dp = (unsigned char *)block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
453 for (i = 0; i < block_size; i++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
454 if (*dp++ != (unsigned char)0xFF) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
455 erased = false;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
456 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
457 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
458 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
459 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
460 if (!erased) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
461 stat = dev->funs->flash_erase_block(dev,block);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
462 stat = dev->funs->flash_hwr_map_error(dev,stat);
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
463 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
464 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
465 *err_address = block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
466 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
467 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
468 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
469 erase_count -= block_size;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
470 CHATTER(dev, ".");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
471 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
472 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
473 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
474 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
475 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
476 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
477 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
478 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
479
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
480 // If there are multiple flash devices in series the erase operation
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
481 // may touch successive devices. This can be handled by recursion.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
482 // The stack overheads should be minimal because the number of
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
483 // devices will be small.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
484 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
485 return cyg_flash_erase(dev->end+1,
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
486 len - (dev->end + 1 - flash_base),
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
487 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
488 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
489 return CYG_FLASH_ERR_OK;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
490 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
491
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
492 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
493 cyg_flash_program(const cyg_flashaddr_t flash_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
494 void *ram_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
495 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
496 cyg_flashaddr_t *err_address)
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
497 {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
498 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
499 cyg_flashaddr_t addr, end_addr, block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
500 unsigned char * ram = ram_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
501 size_t write_count, offset;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
502 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
503 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
504
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
505 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
506
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
507 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
508 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
509 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
510 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
511 if (!dev) return CYG_FLASH_ERR_INVALID;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
512
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
513 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
514
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
515 LOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
516 addr = flash_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
517 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
518 end_addr = dev->end;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
519 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
520 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
521 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
522 write_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
523
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
524 // The first write may be in the middle of a block. Do the necessary
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
525 // adjustment here rather than inside the loop.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
526 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
527 if (addr == block) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
528 offset = 0;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
529 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
530 offset = addr - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
531 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
532
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
533 CHATTER(dev, "... Program from %p-%p to %p: ", ram_base, ((CYG_ADDRESS)ram_base)+write_count, addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
534
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
535 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
536 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
537 while (write_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
538 size_t block_size = flash_block_size(dev, addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
539 size_t this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
540 if (write_count > (block_size - offset)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
541 this_write = block_size - offset;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
542 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
543 this_write = write_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
544 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
545 // Only the first block may need the offset.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
546 offset = 0;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
547
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
548 stat = dev->funs->flash_program(dev, addr, ram, this_write);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
549 stat = dev->funs->flash_hwr_map_error(dev,stat);
157
b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST
jlarmour
parents: 156
diff changeset
550 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
551 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
552 if (!dev->funs->flash_read && memcmp((void *)addr, ram, this_write) != 0) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
553 stat = CYG_FLASH_ERR_DRV_VERIFY;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
554 CHATTER(dev, "V");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
555 }
157
b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST
jlarmour
parents: 156
diff changeset
556 #endif
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
557 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
558 *err_address = addr;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
559 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
560 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
561 CHATTER(dev, ".");
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
562 write_count -= this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
563 addr += this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
564 ram += this_write;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
565 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
566 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
567 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
568 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
569 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
570 if (stat != CYG_FLASH_ERR_OK) {
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
571 return (stat);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
572 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
573 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
574 return cyg_flash_program(dev->end+1, ram,
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
575 len - (dev->end + 1 - flash_base),
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
576 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
577 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
578 return CYG_FLASH_ERR_OK;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
579 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
580
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
581 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
582 cyg_flash_read(cyg_flashaddr_t flash_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
583 const void *ram_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
584 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
585 cyg_flashaddr_t *err_address)
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
586 {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
587 struct cyg_flash_dev * dev;
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
588 cyg_flashaddr_t addr, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
589 unsigned char * ram = (unsigned char *)ram_base;
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
590 size_t read_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
591 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
592
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
593 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
594
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
595 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
596 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
597 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
598 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
599 if (!dev) return CYG_FLASH_ERR_INVALID;
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
600
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
601 LOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
602 addr = flash_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
603 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
604 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
605 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
606 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
607 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
608 read_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
609
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
610 CHATTER(dev, "... Read from %p-%p to %p: ", addr, end_addr, ram_base);
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
611
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
612 // If the flash is directly accessible, just read it in one go. This
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
613 // still happens with the mutex locked to protect against concurrent
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
614 // programs/erases.
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
615 if (! dev->funs->flash_read) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
616 memcpy(ram, (void*)addr, read_count);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
617 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
618 #ifndef CYGHWR_IO_FLASH_INDIRECT_READS
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
619 CYG_FAIL("read function supplied but indirect reads not enabled");
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
620 stat = CYG_FLASH_ERR_PROTOCOL;
1744
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
621 if (err_address) {
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
622 *err_address = addr;
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
623 }
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
624 #else
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
625 // We have to indirect through the device driver.
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
626 // The first read may be in the middle of a block. Do the necessary
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
627 // adjustment here rather than inside the loop.
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
628 int d_cache, i_cache;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
629 size_t offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
630 cyg_flashaddr_t block = flash_block_begin(flash_base, dev);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
631 if (addr == block) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
632 offset = 0;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
633 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
634 offset = addr - block;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
635 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
636 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
637 FLASH_Enable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
638 while (read_count > 0) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
639 size_t block_size = flash_block_size(dev, addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
640 size_t this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
641 if (read_count > (block_size - offset)) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
642 this_read = block_size - offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
643 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
644 this_read = read_count;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
645 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
646 // Only the first block may need the offset
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
647 offset = 0;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
648
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
649 stat = dev->funs->flash_read(dev, addr, ram, this_read);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
650 stat = dev->funs->flash_hwr_map_error(dev,stat);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
651 if (CYG_FLASH_ERR_OK != stat && err_address) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
652 *err_address = addr;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
653 break;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
654 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
655 CHATTER(dev, ".");
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
656 read_count -= this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
657 addr += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
658 ram += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
659 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
660 FLASH_Disable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
661 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
662 #endif
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
663 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
664 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
665 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
666 if (stat != CYG_FLASH_ERR_OK) {
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
667 return (stat);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
668 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
669 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
670 return cyg_flash_read(dev->end+1, ram,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
671 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
672 err_address);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
673 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
674 return CYG_FLASH_ERR_OK;
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
675 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
676
177
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST
jlarmour
parents: 174
diff changeset
677 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
678 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
679 cyg_flash_lock(const cyg_flashaddr_t flash_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
680 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
681 cyg_flashaddr_t *err_address)
119
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
682 {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
683 cyg_flashaddr_t block, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
684 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
685 size_t lock_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
686 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
687 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
688
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
689 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
690
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
691 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
692 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
693 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
694 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
695 if (!dev) return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
696 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID;
119
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
697
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
698 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
699
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
700 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
701 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
702 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
703 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
704 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
705 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
706 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
707 lock_count = (end_addr + 1) - block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
708
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
709 CHATTER(dev, "... Locking from %p-%p: ", (void*)block, (void*)end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
710
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
711 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
712 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
713 while (lock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
714 size_t block_size = flash_block_size(dev, block);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
715 if (lock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
716 lock_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
717 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
718 stat = dev->funs->flash_block_lock(dev,block);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
719 stat = dev->funs->flash_hwr_map_error(dev,stat);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
720
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
721 if (CYG_FLASH_ERR_OK != stat && err_address) {
1715
868c3fa9315f * src/flash.c: Make the flock lock/unlock code compile without
asl
parents: 1706
diff changeset
722 *err_address = block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
723 break;
119
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
724 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
725 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
726 lock_count -= block_size;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
727 CHATTER(dev, ".");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
728 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
729 FLASH_Disable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
730 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
731 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
732 UNLOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
733 if (stat != CYG_FLASH_ERR_OK) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
734 return stat;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
735 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
736
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
737 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
738 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
739 return cyg_flash_lock(dev->end+1,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
740 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
741 err_address);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
742 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
743
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
744 return CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
745 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
746
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
747 __externC int
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
748 cyg_flash_unlock(const cyg_flashaddr_t flash_base,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
749 const size_t len,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
750 cyg_flashaddr_t *err_address)
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
751 {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
752 cyg_flashaddr_t block, end_addr;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
753 struct cyg_flash_dev * dev;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
754 size_t unlock_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
755 int stat = CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
756 int d_cache, i_cache;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
757
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
758 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
759
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
760 for (dev = flash_head;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
761 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end));
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
762 dev=dev->next)
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
763 ;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
764 if (!dev) return CYG_FLASH_ERR_INVALID;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
765 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
766
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
767 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
768
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
769 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
770 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
771 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
772 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
773 end_addr = flash_base + len - 1;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
774 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
775 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
776 unlock_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
777
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
778 CHATTER(dev, "... Unlocking from %p-%p: ", (void*)block, (void*)end_addr);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
779
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
780 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
781 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
782 while (unlock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
783 size_t block_size = flash_block_size(dev, block);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
784 if (unlock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
785 unlock_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
786 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
787 stat = dev->funs->flash_block_unlock(dev,block);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
788 stat = dev->funs->flash_hwr_map_error(dev,stat);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
789
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
790 if (CYG_FLASH_ERR_OK != stat && err_address) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
791 *err_address = block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
792 break;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
793 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
794 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
795 unlock_count -= block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
796
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
797 CHATTER(dev, ".");
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
798 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
799 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
800 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
801 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
802 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
803 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
804 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
805 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
806
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
807 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
808 if (len > (dev->end + 1 - flash_base)) {
1706
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diff changeset
809 return cyg_flash_lock(dev->end+1,
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
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parents: 1730
diff changeset
810 len - (dev->end + 1 - flash_base),
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diff changeset
811 err_address);
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812 }
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813 return CYG_FLASH_ERR_OK;
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814 }
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diff changeset
815 #endif
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816
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diff changeset
817 const char *
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818 cyg_flash_errmsg(const int err)
115
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819 {
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820 switch (err) {
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821 case CYG_FLASH_ERR_OK:
115
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822 return "No error - operation complete";
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823 case CYG_FLASH_ERR_ERASE_SUSPEND:
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diff changeset
824 return "Device is in erase suspend state";
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diff changeset
825 case CYG_FLASH_ERR_PROGRAM_SUSPEND:
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826 return "Device is in program suspend state";
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827 case CYG_FLASH_ERR_INVALID:
115
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828 return "Invalid FLASH address";
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diff changeset
829 case CYG_FLASH_ERR_ERASE:
115
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830 return "Error trying to erase";
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diff changeset
831 case CYG_FLASH_ERR_LOCK:
115
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832 return "Error trying to lock/unlock";
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diff changeset
833 case CYG_FLASH_ERR_PROGRAM:
115
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diff changeset
834 return "Error trying to program";
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asl
parents: 1675
diff changeset
835 case CYG_FLASH_ERR_PROTOCOL:
115
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diff changeset
836 return "Generic error";
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diff changeset
837 case CYG_FLASH_ERR_PROTECT:
115
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diff changeset
838 return "Device/region is write-protected";
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parents: 1675
diff changeset
839 case CYG_FLASH_ERR_NOT_INIT:
115
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parents:
diff changeset
840 return "FLASH sub-system not initialized";
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parents: 1675
diff changeset
841 case CYG_FLASH_ERR_DRV_VERIFY:
143
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parents: 141
diff changeset
842 return "Data verify failed after operation";
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parents: 1675
diff changeset
843 case CYG_FLASH_ERR_DRV_TIMEOUT:
154
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diff changeset
844 return "Driver timed out waiting for device";
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parents: 1675
diff changeset
845 case CYG_FLASH_ERR_DRV_WRONG_PART:
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parents: 151
diff changeset
846 return "Driver does not support device";
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parents: 1675
diff changeset
847 case CYG_FLASH_ERR_LOW_VOLTAGE:
156
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parents: 154
diff changeset
848 return "Device reports low voltage";
115
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parents:
diff changeset
849 default:
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parents:
diff changeset
850 return "Unknown error";
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parents:
diff changeset
851 }
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parents:
diff changeset
852 }
151
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diff changeset
853
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854 // EOF io/flash/..../flash.c