Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 1746:172edf8a96d8

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Eliminate cyg_flash_code_overlaps()
author bartv
date Sun, 21 Nov 2004 18:39:15 +0000
parents f854ed1e81db
children a221170fac3d
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/
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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
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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 // Return information about the Nth driver
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238 __externC int
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239 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info)
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240 {
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diff changeset
241 struct cyg_flash_dev * dev;
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242
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243 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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244
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245 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--)
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246 ;
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diff changeset
247 if (dev && !Nth) {
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diff changeset
248 info->start = dev->start;
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249 info->end = dev->end;
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250 info->num_block_infos = dev->num_block_infos;
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251 info->block_info = dev->block_info;
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252 return CYG_FLASH_ERR_OK;
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diff changeset
253 }
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254 return CYG_FLASH_ERR_INVALID;
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255 }
157
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256
1706
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257 // Return information about the flash at the given address
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diff changeset
258 __externC int
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diff changeset
259 cyg_flash_get_info_addr(cyg_flashaddr_t flash_base, cyg_flash_info_t * info)
115
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260 {
1706
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261 struct cyg_flash_dev *dev;
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diff changeset
262
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263 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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diff changeset
264
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diff changeset
265 for (dev = flash_head; dev ; dev=dev->next) {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
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diff changeset
266 if ((dev->start <= flash_base) && ( flash_base <= dev->end)) {
1706
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diff changeset
267 info->start = dev->start;
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diff changeset
268 info->end = dev->end;
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diff changeset
269 info->num_block_infos = dev->num_block_infos;
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270 info->block_info = dev->block_info;
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diff changeset
271 return CYG_FLASH_ERR_OK;
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272 }
1706
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273 }
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diff changeset
274 return CYG_FLASH_ERR_INVALID;
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diff changeset
275 }
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276
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diff changeset
277 #ifdef CYGPKG_KERNEL
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278 // Lock the mutex's for a range of addresses
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279 __externC int
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280 cyg_flash_mutex_lock(const cyg_flashaddr_t from, const size_t len)
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diff changeset
281 {
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282 struct cyg_flash_dev * dev;
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diff changeset
283 int err;
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diff changeset
284
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285 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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diff changeset
286
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287 for (dev = flash_head; dev ; dev=dev->next) {
1741
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diff changeset
288 if ((dev->start <= from) && ( from <= dev->end)) {
1706
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289 cyg_mutex_lock(&dev->mutex);
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diff changeset
290 if (dev->end > from+len) {
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diff changeset
291 return CYG_FLASH_ERR_OK;
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diff changeset
292 } else { // Check off by one?
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diff changeset
293 //The region is bigger than this driver. Recurse
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diff changeset
294 err = cyg_flash_mutex_lock(dev->end+1, (len - (dev->end - from)));
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diff changeset
295 if (err != CYG_FLASH_ERR_OK) {
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diff changeset
296 // Something went wrong, unlock what we just locked
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diff changeset
297 cyg_mutex_unlock(&dev->mutex);
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diff changeset
298 }
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diff changeset
299 return err;
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diff changeset
300 }
208
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diff changeset
301 }
1706
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diff changeset
302 }
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diff changeset
303 return CYG_FLASH_ERR_INVALID;
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diff changeset
304 }
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305
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
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diff changeset
306 // Unlock the mutex's for a range of addresses
1706
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diff changeset
307 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
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diff changeset
308 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, const size_t len)
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diff changeset
309 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
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diff changeset
310 struct cyg_flash_dev * dev;
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diff changeset
311 int err;
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diff changeset
312
3845779eca10 * src/flash.c: Major rewrite to implement a new API
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diff changeset
313 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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 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
316 if ((dev->start <= from) && ( from <= dev->end)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
317 cyg_mutex_unlock(&dev->mutex);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
318 if (dev->end > from+len) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
319 return CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
320 } else { // Check off by one?
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
321 //The region is bigger than this driver. Recurse
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
322 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
323 return 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 }
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 return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
328 }
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
329 #endif
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
330
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
331 // 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
332 static size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
333 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
334 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
335 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
336 size_t offset;
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 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
340
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
341 offset = addr - dev->start;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
342 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
343 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
344 return dev->block_info[i].block_size;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
345 offset = offset -
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
346 (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
347 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
348 CYG_FAIL("Programming error");
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
349 return 0;
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
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
352 // 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
353 __externC size_t
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
354 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
355 {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
356 struct cyg_flash_dev * dev;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
357
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
358 if (!init) return CYG_FLASH_ERR_NOT_INIT;
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 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
361 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
362 dev=dev->next)
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 if (!dev) return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
365
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
366 return flash_block_size(dev, 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
1723
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
369 // 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
370 // 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
371 // offsets.
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
372 static inline cyg_flashaddr_t
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
373 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
374 {
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
375 size_t block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
376 cyg_flashaddr_t offset;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
377
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
378 block_size = flash_block_size(dev, addr);
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
379
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
380 offset = addr - dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
381 offset = (offset / block_size) * block_size;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
382 return offset + dev->start;
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
383 }
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
384
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 195
diff changeset
385
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
386 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
387 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
388 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
389 cyg_flashaddr_t *err_address)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
390 {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
391 cyg_flashaddr_t block, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
392 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
393 size_t erase_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
394 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
395 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
396
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
397 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
398
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
399 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
400 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
401 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
402 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
403 if (!dev) return CYG_FLASH_ERR_INVALID;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
404
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
405 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
406
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
407 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
408
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
409 // 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
410 // 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
411 // recursive call later on.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
412 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
413 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
414 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
415 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
416 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
417 // 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
418 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
419 erase_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
420
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
421 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
422
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
423 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
424 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
425 while (erase_count > 0) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
426 int i;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
427 unsigned char *dp;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
428 bool erased = false;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
429 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
430
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
431 // Pad to the block boundary, if necessary
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
432 if (erase_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
433 erase_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
434 }
1723
0cc13d07a67e * src/flash.c: Support flash blocks of arbitary size. The
asl
parents: 1722
diff changeset
435
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
436 // 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
437 // cannot be read directly.
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
438 if (!dev->funs->flash_read) {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
439 erased = true;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
440 dp = (unsigned char *)block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
441 for (i = 0; i < block_size; i++) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
442 if (*dp++ != (unsigned char)0xFF) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
443 erased = false;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
444 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
445 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
446 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
447 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
448 if (!erased) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
449 stat = dev->funs->flash_erase_block(dev,block);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
450 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
451 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
452 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
453 *err_address = block;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
454 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
455 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
456 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
457 erase_count -= block_size;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
458 CHATTER(dev, ".");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
459 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
460 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
461 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
462 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
463 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
464 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
465 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
466 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
467
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
468 // 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
469 // 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
470 // 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
471 // devices will be small.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
472 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
473 return cyg_flash_erase(dev->end+1,
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
474 len - (dev->end + 1 - flash_base),
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
475 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
476 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
477 return CYG_FLASH_ERR_OK;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
478 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
479
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
480 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
481 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
482 void *ram_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
483 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
484 cyg_flashaddr_t *err_address)
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
485 {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
486 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
487 cyg_flashaddr_t addr, end_addr, block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
488 unsigned char * ram = ram_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
489 size_t write_count, offset;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
490 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
491 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
492
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
493 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
494
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
495 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
496 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
497 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
498 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
499 if (!dev) return CYG_FLASH_ERR_INVALID;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
500
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
501 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
502
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
503 LOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
504 addr = flash_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
505 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
506 end_addr = dev->end;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
507 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
508 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
509 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
510 write_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
511
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
512 // 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
513 // adjustment here rather than inside the loop.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
514 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
515 if (addr == block) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
516 offset = 0;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
517 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
518 offset = addr - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
519 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
520
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
521 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
522
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
523 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
524 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
525 while (write_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
526 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
527 size_t this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
528 if (write_count > (block_size - offset)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
529 this_write = block_size - offset;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
530 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
531 this_write = write_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
532 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
533 // Only the first block may need the offset.
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
534 offset = 0;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
535
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
536 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
537 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
538 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
539 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
540 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
541 stat = CYG_FLASH_ERR_DRV_VERIFY;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
542 CHATTER(dev, "V");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
543 }
157
b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST
jlarmour
parents: 156
diff changeset
544 #endif
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
545 if (CYG_FLASH_ERR_OK != stat && err_address) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
546 *err_address = addr;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
547 break;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
548 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
549 CHATTER(dev, ".");
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
550 write_count -= this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
551 addr += this_write;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
552 ram += this_write;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
553 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
554 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
555 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
556 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
557 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
558 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
559 return (stat);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
560 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
561 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
562 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
563 len - (dev->end + 1 - flash_base),
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
564 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
565 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
566 return CYG_FLASH_ERR_OK;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
567 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
568
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
569 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
570 cyg_flash_read(cyg_flashaddr_t flash_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
571 const void *ram_base,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
572 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
573 cyg_flashaddr_t *err_address)
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
574 {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
575 struct cyg_flash_dev * dev;
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
576 cyg_flashaddr_t addr, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
577 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
578 size_t read_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
579 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
580
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
581 if (!init) return CYG_FLASH_ERR_NOT_INIT;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
582
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
583 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
584 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
585 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
586 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
587 if (!dev) return CYG_FLASH_ERR_INVALID;
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
588
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
589 LOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
590 addr = flash_base;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
591 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
592 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
593 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
594 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
595 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
596 read_count = (end_addr + 1) - flash_base;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
597
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
598 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
599
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
600 // 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
601 // 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
602 // programs/erases.
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
603 if (! dev->funs->flash_read) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
604 memcpy(ram, (void*)addr, read_count);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
605 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
606 #ifndef CYGHWR_IO_FLASH_INDIRECT_READS
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
607 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
608 stat = CYG_FLASH_ERR_PROTOCOL;
1744
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
609 if (err_address) {
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
610 *err_address = addr;
f854ed1e81db Fix reads on legacy devices
bartv
parents: 1743
diff changeset
611 }
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
612 #else
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
613 // 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
614 // 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
615 // 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
616 int d_cache, i_cache;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
617 size_t offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
618 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
619 if (addr == block) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
620 offset = 0;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
621 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
622 offset = addr - block;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
623 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
624 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
625 FLASH_Enable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
626 while (read_count > 0) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
627 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
628 size_t this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
629 if (read_count > (block_size - offset)) {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
630 this_read = block_size - offset;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
631 } else {
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
632 this_read = read_count;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
633 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
634 // 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
635 offset = 0;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
636
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
637 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
638 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
639 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
640 *err_address = addr;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
641 break;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
642 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
643 CHATTER(dev, ".");
1742
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
644 read_count -= this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
645 addr += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
646 ram += this_read;
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
647 }
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
648 FLASH_Disable(flash_base, end_addr);
a668b95e5f2e Only include the support for indirect flash reads if there are devices
bartv
parents: 1741
diff changeset
649 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
650 #endif
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
651 }
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
652 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
653 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
654 if (stat != CYG_FLASH_ERR_OK) {
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
655 return (stat);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
656 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
657 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
658 return cyg_flash_read(dev->end+1, ram,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
659 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
660 err_address);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
661 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
662 return CYG_FLASH_ERR_OK;
1223
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
663 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it
gthomas
parents: 210
diff changeset
664
177
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST
jlarmour
parents: 174
diff changeset
665 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
666 __externC int
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
667 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
668 const size_t len,
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
669 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
670 {
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
671 cyg_flashaddr_t block, end_addr;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
672 struct cyg_flash_dev * dev;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
673 size_t lock_count;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
674 int stat = CYG_FLASH_ERR_OK;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
675 int d_cache, i_cache;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
676
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
677 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
678
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
679 for (dev = flash_head;
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
680 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
681 dev=dev->next)
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
682 ;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
683 if (!dev) return CYG_FLASH_ERR_INVALID;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
684 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
685
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
686 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
687
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
688 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
689 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
690 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
691 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
692 end_addr = flash_base + len - 1;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
693 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
694 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
695 lock_count = (end_addr + 1) - block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
696
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
697 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
698
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
699 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
700 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
701 while (lock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
702 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
703 if (lock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
704 lock_count = block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
705 }
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
706 stat = dev->funs->flash_block_lock(dev,block);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
707 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
708
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
709 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
710 *err_address = block;
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
711 break;
119
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
712 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
713 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
714 lock_count -= block_size;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
715 CHATTER(dev, ".");
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
716 }
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
717 FLASH_Disable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
718 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
719 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
720 UNLOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
721 if (stat != CYG_FLASH_ERR_OK) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
722 return stat;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
723 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
724
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
725 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
726 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
727 return cyg_flash_lock(dev->end+1,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
728 len - (dev->end + 1 - flash_base),
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
729 err_address);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
730 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
731
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
732 return CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
733 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
734
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
735 __externC int
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
736 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
737 const size_t len,
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
738 cyg_flashaddr_t *err_address)
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
739 {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
740 cyg_flashaddr_t block, end_addr;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
741 struct cyg_flash_dev * dev;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
742 size_t unlock_count;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
743 int stat = CYG_FLASH_ERR_OK;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
744 int d_cache, i_cache;
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 if (!init) return CYG_FLASH_ERR_NOT_INIT;
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
747
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
748 for (dev = flash_head;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
749 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
750 dev=dev->next)
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 if (!dev) return CYG_FLASH_ERR_INVALID;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
753 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
754
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
755 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
756
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
757 LOCK(dev);
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
758 if (len > (dev->end + 1 - flash_base)) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
759 end_addr = dev->end;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
760 } else {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
761 end_addr = flash_base + len - 1;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
762 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
763 block = flash_block_begin(flash_base, dev);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
764 unlock_count = (end_addr + 1) - block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
765
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
766 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
767
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
768 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
769 FLASH_Enable(flash_base, end_addr);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
770 while (unlock_count > 0) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
771 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
772 if (unlock_count < block_size) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
773 unlock_count = block_size;
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 stat = dev->funs->flash_block_unlock(dev,block);
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
776 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
777
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
778 if (CYG_FLASH_ERR_OK != stat && err_address) {
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
779 *err_address = block;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
780 break;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
781 }
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
782 block += block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
783 unlock_count -= block_size;
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
784
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
785 CHATTER(dev, ".");
1741
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 FLASH_Disable(flash_base, end_addr);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
788 HAL_FLASH_CACHES_ON(d_cache, i_cache);
1743
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
789 CHATTER(dev, "\n");
0d824ba900cc Encapsulate various bits of optional functionality inside macros, to
bartv
parents: 1742
diff changeset
790 UNLOCK(dev);
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
791 if (stat != CYG_FLASH_ERR_OK) {
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
792 return stat;
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
793 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
794
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
795 // Recurse if necessary for the next device
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
796 if (len > (dev->end + 1 - flash_base)) {
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
797 return cyg_flash_lock(dev->end+1,
1741
9464c6747e99 Sort out the various loops to cope with boundary conditions,
bartv
parents: 1730
diff changeset
798 len - (dev->end + 1 - flash_base),
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
799 err_address);
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
800 }
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
801 return CYG_FLASH_ERR_OK;
119
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
802 }
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
803 #endif
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents: 117
diff changeset
804
1706
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
805 const char *
3845779eca10 * src/flash.c: Major rewrite to implement a new API
asl
parents: 1675
diff changeset
806 cyg_flash_errmsg(const int err)
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
807 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
808 switch (err) {
1706
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809 case CYG_FLASH_ERR_OK:
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810 return "No error - operation complete";
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811 case CYG_FLASH_ERR_ERASE_SUSPEND:
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812 return "Device is in erase suspend state";
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813 case CYG_FLASH_ERR_PROGRAM_SUSPEND:
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814 return "Device is in program suspend state";
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815 case CYG_FLASH_ERR_INVALID:
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816 return "Invalid FLASH address";
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817 case CYG_FLASH_ERR_ERASE:
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818 return "Error trying to erase";
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819 case CYG_FLASH_ERR_LOCK:
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820 return "Error trying to lock/unlock";
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821 case CYG_FLASH_ERR_PROGRAM:
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822 return "Error trying to program";
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823 case CYG_FLASH_ERR_PROTOCOL:
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824 return "Generic error";
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825 case CYG_FLASH_ERR_PROTECT:
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826 return "Device/region is write-protected";
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diff changeset
827 case CYG_FLASH_ERR_NOT_INIT:
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828 return "FLASH sub-system not initialized";
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diff changeset
829 case CYG_FLASH_ERR_DRV_VERIFY:
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diff changeset
830 return "Data verify failed after operation";
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diff changeset
831 case CYG_FLASH_ERR_DRV_TIMEOUT:
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diff changeset
832 return "Driver timed out waiting for device";
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diff changeset
833 case CYG_FLASH_ERR_DRV_WRONG_PART:
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diff changeset
834 return "Driver does not support device";
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diff changeset
835 case CYG_FLASH_ERR_LOW_VOLTAGE:
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diff changeset
836 return "Device reports low voltage";
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837 default:
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diff changeset
838 return "Unknown error";
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diff changeset
839 }
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840 }
151
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841
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842 // EOF io/flash/..../flash.c