Mercurial > flash_v2
annotate packages/io/flash/current/src/flash.c @ 1722:c4240af0fa28
* removed the functions cyg_flash_get_limits and
cyg_flash_get_block_info. Reimplemented the legacy functions
that depended on them and flashiodev.c
| author | asl |
|---|---|
| date | Sat, 21 Aug 2004 13:47:55 +0000 |
| parents | 868c3fa9315f |
| children | 0cc13d07a67e |
| 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) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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12 // Copyright (C) 2003 Gary Thomas |
| 1706 | 13 // Copyright (C) 2004 Andrew Lunn |
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14 // |
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15 // eCos is free software; you can redistribute it and/or modify it under |
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16 // the terms of the GNU General Public License as published by the Free |
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17 // Software Foundation; either version 2 or (at your option) any later version. |
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18 // |
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19 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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20 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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21 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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22 // for more details. |
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23 // |
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24 // You should have received a copy of the GNU General Public License along |
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25 // with eCos; if not, write to the Free Software Foundation, Inc., |
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26 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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27 // |
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28 // As a special exception, if other files instantiate templates or use macros |
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29 // or inline functions from this file, or you compile this file and link it |
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30 // with other works to produce a work based on this file, this file does not |
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31 // by itself cause the resulting work to be covered by the GNU General Public |
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32 // License. However the source code for this file must still be made available |
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33 // in accordance with section (3) of the GNU General Public License. |
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34 // |
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35 // This exception does not invalidate any other reasons why a work based on |
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36 // this file might be covered by the GNU General Public License. |
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37 // |
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38 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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39 // at http://sources.redhat.com/ecos/ecos-license/ |
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40 // ------------------------------------------- |
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41 //####ECOSGPLCOPYRIGHTEND#### |
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42 //========================================================================== |
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43 //#####DESCRIPTIONBEGIN#### |
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44 // |
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45 // Author(s): gthomas |
| 1706 | 46 // Contributors: gthomas, Andrew Lunn |
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47 // Date: 2000-07-26 |
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48 // Purpose: |
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49 // Description: |
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50 // |
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51 //####DESCRIPTIONEND#### |
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52 // |
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53 //========================================================================== |
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54 |
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55 #include <pkgconf/system.h> |
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56 #include <pkgconf/io_flash.h> |
| 1706 | 57 #ifdef CYGPKG_KERNEL |
| 58 #include <cyg/kernel/kapi.h> | |
| 59 #endif | |
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60 #include <cyg/hal/hal_arch.h> |
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61 #include <cyg/hal/hal_intr.h> |
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62 #include <cyg/hal/hal_cache.h> |
| 1706 | 63 #include <cyg/hal/hal_tables.h> |
| 64 #include <cyg/infra/cyg_ass.h> | |
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65 #include <string.h> |
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66 |
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67 #define _FLASH_PRIVATE_ |
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68 #include <cyg/io/flash.h> |
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69 |
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70 // When this flag is set, do not actually jump to the relocated code. |
| 1706 | 71 // This can be used for running the function in place (RAM startup |
| 72 // only), allowing calls to diag_printf() and similar. | |
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73 #undef RAM_FLASH_DEV_DEBUG |
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74 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG) |
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75 # warning "Can only enable the flash debugging when configured for RAM startup" |
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76 #endif |
| 1706 | 77 #ifndef MIN |
| 78 #define MIN(x,y) ((x)<(y) ? (x) : (y)) | |
| 79 #endif | |
| 1400 | 80 |
| 1706 | 81 // Has the FLASH IO library been initialise? |
| 82 static bool init = false; | |
| 83 // We have a linked list of flash drivers. This is the head of the | |
| 84 // list | |
| 85 static struct cyg_flash_dev *flash_head = NULL; | |
| 86 | |
| 87 // This array contains entries for all flash devices that are | |
| 88 // installed in the system. | |
| 89 __externC struct cyg_flash_dev cyg_flashdevtab[]; | |
| 90 CYG_HAL_TABLE_BEGIN(cyg_flashdevtab, cyg_flashdev); | |
| 91 | |
| 92 // end of the flashdev table | |
| 93 __externC struct cyg_flash_dev cyg_flashdevtab_end; | |
| 94 CYG_HAL_TABLE_END(cyg_flashdevtab_end, cyg_flashdev); | |
| 1400 | 95 |
| 1706 | 96 // Sort the linked list into ascending order of flash address. Use a |
| 97 // primitive ripple sort, but since we don't expect to have many | |
| 98 // devices this should be OK. | |
| 99 static void flash_sort(void) | |
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100 { |
| 1706 | 101 bool moved; |
| 102 struct cyg_flash_dev *dev, **previous_next; | |
| 103 | |
| 104 // If there is zero or one device, short cut | |
| 105 if (flash_head == NULL || flash_head->next == NULL) | |
| 106 return; | |
| 107 | |
| 108 do { | |
| 109 moved=false; | |
| 110 for (dev=flash_head, previous_next=&flash_head; | |
| 111 dev->next; | |
| 112 previous_next = &dev->next, dev=dev->next ){ | |
| 113 if (dev->start > dev->next->start) { | |
| 114 *previous_next=dev->next; | |
| 115 dev->next = (*previous_next)->next; | |
| 116 (*previous_next)->next = dev; | |
| 117 moved=true; | |
| 118 break; | |
| 119 } | |
| 120 } | |
| 121 } while (moved); | |
| 122 } | |
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123 |
| 1706 | 124 // Walk the linked list and see if there are any overlaps in the |
| 125 // addresses the devices claim to use using. | |
| 126 static bool flash_check_overlap(void) | |
| 127 { | |
| 128 struct cyg_flash_dev *dev; | |
| 129 | |
| 130 // If there is zero or one device, short cut | |
| 131 if (flash_head == NULL || flash_head->next == NULL) | |
| 132 return false; | |
| 133 | |
| 134 for (dev=flash_head; dev->next; dev=dev->next){ | |
| 135 if (dev->end >= dev->next->start) | |
| 136 return true; | |
| 137 } | |
| 138 return false; | |
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139 } |
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140 |
| 1706 | 141 // Initialise all registered device. Any device that fails to |
| 142 // initialise we leave dev->init as false. Then sort the devices into | |
| 143 // ascending order of address and put them into a linked list. Lastly | |
| 144 // check if we have any overlap of the addresses. | |
| 145 __externC int | |
| 146 cyg_flash_init(cyg_flash_printf *pf) | |
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147 { |
| 1706 | 148 int err; |
| 149 struct cyg_flash_dev * dev; | |
| 150 | |
| 151 if (init) return CYG_FLASH_ERR_OK; | |
| 152 init = true; | |
| 153 | |
| 154 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) { | |
| 155 dev->pf = pf; | |
| 156 #ifdef CYGPKG_KERNEL | |
| 157 cyg_mutex_init(&dev->mutex); | |
| 158 #endif | |
| 159 | |
| 160 err = dev->funs->flash_init(dev); | |
| 161 if (err != CYG_FLASH_ERR_OK) { | |
| 162 continue; | |
| 163 } | |
| 164 CYG_ASSERT(dev->funs, "No flash functions"); | |
| 165 CYG_ASSERT(dev->num_block_infos, "No number of block infoss"); | |
| 166 CYG_ASSERT(dev->block_info, "No block infos"); | |
| 167 CYG_ASSERT(!(((cyg_flashaddr_t)dev->block_info >= dev->start) && | |
| 168 ((cyg_flashaddr_t)dev->block_info < dev->end)), | |
| 169 "Block info is in the flash"); | |
| 170 CYG_ASSERT(dev->funs->flash_erase_block, "No erase function"); | |
| 171 CYG_ASSERT(dev->funs->flash_program, "No program function"); | |
| 172 CYG_ASSERT(dev->funs->flash_hwr_map_error, "No hwr map error function"); | |
| 173 | |
| 174 dev->init = true; | |
| 175 dev->next = flash_head; | |
| 176 flash_head = dev; | |
| 177 } | |
| 178 | |
| 179 flash_sort(); | |
| 180 | |
| 181 if (flash_check_overlap()) { | |
| 182 return CYG_FLASH_ERR_INVALID; | |
| 183 } | |
| 184 return CYG_FLASH_ERR_OK; | |
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185 } |
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186 |
| 1706 | 187 // Is the address within one of the flash drivers? |
| 188 __externC int | |
| 189 cyg_flash_verify_addr(const cyg_flashaddr_t address) | |
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190 { |
| 1706 | 191 struct cyg_flash_dev * dev; |
| 192 | |
| 193 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 194 | |
| 195 for (dev = flash_head; dev; dev=dev->next) { | |
| 196 if ((dev->start <= address) && (dev->end > address)) | |
| 197 return CYG_FLASH_ERR_OK; | |
| 198 } | |
| 199 return CYG_FLASH_ERR_INVALID; | |
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200 } |
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201 |
| 1706 | 202 // See if a range of FLASH addresses overlaps currently running code |
| 203 __externC bool cyg_flash_code_overlaps(const cyg_flashaddr_t start, | |
| 204 const cyg_flashaddr_t end) | |
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205 { |
| 1706 | 206 extern char _stext[], _etext[]; |
| 207 | |
| 208 return ((((unsigned long)&_stext >= (unsigned long)start) && | |
| 209 ((unsigned long)&_stext < (unsigned long)end)) || | |
| 210 (((unsigned long)&_etext >= (unsigned long)start) && | |
| 211 ((unsigned long)&_etext < (unsigned long)end))); | |
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212 } |
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213 |
| 1706 | 214 // Return information about the Nth driver |
| 215 __externC int | |
| 216 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info) | |
| 217 { | |
| 218 struct cyg_flash_dev * dev; | |
| 219 | |
| 220 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 221 | |
| 222 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--) | |
| 223 ; | |
| 224 if (dev && !Nth) { | |
| 225 info->start = dev->start; | |
| 226 info->end = dev->end; | |
| 227 info->num_block_infos = dev->num_block_infos; | |
| 228 info->block_info = dev->block_info; | |
| 229 return CYG_FLASH_ERR_OK; | |
| 230 } | |
| 231 return CYG_FLASH_ERR_INVALID; | |
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232 } |
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233 |
| 1706 | 234 // Return information about the flash at the given address |
| 235 __externC int | |
| 236 cyg_flash_get_info_addr(cyg_flashaddr_t flash_base, cyg_flash_info_t * info) | |
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237 { |
| 1706 | 238 struct cyg_flash_dev *dev; |
| 239 | |
| 240 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 241 | |
| 242 for (dev = flash_head; dev ; dev=dev->next) { | |
| 243 if ((dev->start <= flash_base) && ( dev->end > flash_base)) { | |
| 244 info->start = dev->start; | |
| 245 info->end = dev->end; | |
| 246 info->num_block_infos = dev->num_block_infos; | |
| 247 info->block_info = dev->block_info; | |
| 248 return CYG_FLASH_ERR_OK; | |
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249 } |
| 1706 | 250 } |
| 251 return CYG_FLASH_ERR_INVALID; | |
| 252 } | |
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253 |
| 1706 | 254 #ifdef CYGPKG_KERNEL |
| 255 //Lock the mutex's for a range of addresses | |
| 256 __externC int | |
| 257 cyg_flash_mutex_lock(const cyg_flashaddr_t from, const size_t len) | |
| 258 { | |
| 259 struct cyg_flash_dev * dev; | |
| 260 int err; | |
| 261 | |
| 262 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 263 | |
| 264 for (dev = flash_head; dev ; dev=dev->next) { | |
| 265 if ((dev->start <= from) && ( dev->end > from)) { | |
| 266 cyg_mutex_lock(&dev->mutex); | |
| 267 if (dev->end > from+len) { | |
| 268 return CYG_FLASH_ERR_OK; | |
| 269 } else { // Check off by one? | |
| 270 //The region is bigger than this driver. Recurse | |
| 271 err = cyg_flash_mutex_lock(dev->end+1, (len - (dev->end - from))); | |
| 272 if (err != CYG_FLASH_ERR_OK) { | |
| 273 // Something went wrong, unlock what we just locked | |
| 274 cyg_mutex_unlock(&dev->mutex); | |
| 275 } | |
| 276 return err; | |
| 277 } | |
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278 } |
| 1706 | 279 } |
| 280 return CYG_FLASH_ERR_INVALID; | |
| 281 } | |
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282 |
| 1706 | 283 //Unlock the mutex's for a range of addresses |
| 284 __externC int | |
| 285 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, const size_t len) | |
| 286 { | |
| 287 struct cyg_flash_dev * dev; | |
| 288 int err; | |
| 289 | |
| 290 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 291 | |
| 292 for (dev = flash_head; dev ; dev=dev->next) { | |
| 293 if ((dev->start <= from) && ( dev->end > from)) { | |
| 294 cyg_mutex_unlock(&dev->mutex); | |
| 295 if (dev->end > from+len) { | |
| 296 return CYG_FLASH_ERR_OK; | |
| 297 } else { // Check off by one? | |
| 298 //The region is bigger than this driver. Recurse | |
| 299 err = cyg_flash_mutex_unlock(dev->end+1, (len - (dev->end - from))); | |
| 300 return err; | |
| 301 } | |
| 302 } | |
| 303 } | |
| 304 return CYG_FLASH_ERR_INVALID; | |
| 305 } | |
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306 #endif |
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307 |
| 1706 | 308 // Return the size of the block which is at the given address |
| 309 static size_t | |
| 310 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr) | |
| 311 { | |
| 312 int i; | |
| 313 size_t offset; | |
| 314 | |
| 315 | |
| 316 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device"); | |
| 317 | |
| 318 offset = addr - dev->start; | |
| 319 for (i=0; i < dev->num_block_infos; i++) { | |
| 320 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size)) | |
| 321 return dev->block_info[i].block_size; | |
| 322 offset = offset - | |
| 323 (dev->block_info[i].blocks * dev->block_info[i].block_size); | |
| 324 } | |
| 325 CYG_FAIL("Programming error"); | |
| 326 return 0; | |
| 327 } | |
| 328 | |
| 329 // Return the size of the block which is at the given address | |
| 330 __externC size_t | |
| 331 cyg_flash_block_size(const cyg_flashaddr_t flash_base) | |
| 332 { | |
| 333 struct cyg_flash_dev * dev; | |
| 334 | |
| 335 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 336 | |
| 337 for (dev = flash_head; | |
| 338 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 339 dev=dev->next) | |
| 340 ; | |
| 341 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 342 | |
| 343 return flash_block_size(dev, flash_base); | |
| 344 } | |
| 345 | |
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346 |
| 1706 | 347 __externC int |
| 348 cyg_flash_erase(const cyg_flashaddr_t flash_base, | |
| 349 const size_t len, | |
| 350 cyg_flashaddr_t *err_address) | |
| 351 { | |
| 352 cyg_flashaddr_t block, end_addr, addr; | |
| 353 struct cyg_flash_dev * dev; | |
| 354 size_t block_size; | |
| 355 int stat = CYG_FLASH_ERR_OK; | |
| 356 int d_cache, i_cache; | |
| 357 | |
| 358 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 359 | |
| 360 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT | |
| 361 if (plf_flash_query_soft_wp(addr,len)) | |
| 362 return CYG_FLASH_ERR_PROTECT; | |
| 363 #endif | |
| 364 | |
| 365 for (dev = flash_head; | |
| 366 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 367 dev=dev->next) | |
| 368 ; | |
| 369 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 370 | |
| 371 #ifdef CYGPKG_KERNEL | |
| 372 cyg_mutex_lock(&dev->mutex); | |
| 373 #endif | |
| 374 addr = flash_base; | |
| 375 end_addr = flash_base + len - 1; | |
| 376 if (end_addr > dev->end) { | |
| 377 end_addr = dev->end; | |
| 378 } | |
| 379 | |
| 380 block_size = flash_block_size(dev, addr); | |
| 381 block = (cyg_flashaddr_t)((size_t)addr & ~(block_size - 1)); | |
| 382 | |
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383 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 384 dev->pf("... Erase from %p-%p: ", (void*)block, (void*)end_addr); |
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385 #endif |
| 1706 | 386 |
| 387 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 388 FLASH_Enable(block, end_addr); | |
| 389 while (block <= end_addr) { | |
| 390 int i; | |
| 391 unsigned char *dp; | |
| 392 bool erased = true; | |
| 393 | |
| 394 // If there is a read function it probably means the flash | |
| 395 // cannot be read directly. | |
| 396 if (!dev->funs->flash_read) { | |
| 397 dp = (unsigned char *)block; | |
| 398 for (i = 0; i < block_size; i++) { | |
| 399 if (*dp++ != (unsigned char)0xFF) { | |
| 400 erased = false; | |
| 401 break; | |
| 402 } | |
| 403 } | |
| 404 } else { | |
| 405 erased=false; | |
| 406 } | |
| 407 if (!erased) { | |
| 408 stat = dev->funs->flash_erase_block(dev,block); | |
| 409 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
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410 } |
| 1706 | 411 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 412 *err_address = block; | |
| 413 break; | |
| 414 } | |
| 415 block += flash_block_size(dev, block); | |
| 416 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 417 dev->pf("."); | |
| 418 #endif | |
| 419 } | |
| 420 FLASH_Disable(block, end_addr); | |
| 421 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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422 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 423 dev->pf("\n"); |
| 424 #endif | |
| 425 #ifdef CYGPKG_KERNEL | |
| 426 cyg_mutex_unlock(&dev->mutex); | |
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427 #endif |
| 1706 | 428 if (stat != CYG_FLASH_ERR_OK) { |
| 429 return stat; | |
| 430 } | |
| 431 | |
| 432 if (flash_base + len - 1 > dev->end) { | |
| 433 // The region to erase if bigger than this driver handles. Recurse | |
| 434 return cyg_flash_erase(dev->end+1, | |
| 435 len - (dev->end - flash_base) - 1, | |
| 436 err_address); | |
| 437 } | |
| 438 return CYG_FLASH_ERR_OK; | |
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439 } |
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440 |
| 1706 | 441 __externC int |
| 442 cyg_flash_program(const cyg_flashaddr_t flash_base, | |
| 443 void *ram_base, | |
| 444 const size_t len, | |
| 445 cyg_flashaddr_t *err_address) | |
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446 { |
| 1706 | 447 struct cyg_flash_dev * dev; |
| 448 cyg_flashaddr_t addr, end_addr; | |
| 449 unsigned char * ram = ram_base; | |
| 450 size_t block_size, size, length, offset; | |
| 451 int stat = CYG_FLASH_ERR_OK; | |
| 452 int d_cache, i_cache; | |
| 453 | |
| 454 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 455 | |
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456 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 457 if (plf_flash_query_soft_wp(addr,len)) |
| 458 return CYG_FLASH_ERR_PROTECT; | |
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459 #endif |
| 1706 | 460 |
| 461 for (dev = flash_head; | |
| 462 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 463 dev=dev->next) | |
| 464 ; | |
| 465 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 466 | |
| 467 #ifdef CYGPKG_KERNEL | |
| 468 cyg_mutex_lock(&dev->mutex); | |
| 469 #endif | |
| 470 addr = flash_base; | |
| 471 end_addr = flash_base + len - 1; | |
| 472 if (end_addr > dev->end) { | |
| 473 end_addr = dev->end; | |
| 474 } | |
| 475 length = end_addr - addr + 1; | |
| 476 | |
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477 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 478 dev->pf("... Program from %p-%p to %p: ", ram_base, |
| 479 ((CYG_ADDRESS)ram_base)+length, addr); | |
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480 #endif |
| 1706 | 481 |
| 482 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 483 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 484 while (addr <= end_addr) { | |
| 485 block_size = flash_block_size(dev, addr); | |
| 486 size = length; | |
| 487 // Only one block at once | |
| 488 if (size > block_size) size = block_size; | |
| 489 | |
| 490 // Writing from the middle of a block? | |
| 491 offset = (size_t)addr & (block_size-1); | |
| 492 if (offset) | |
| 493 size = MIN(block_size - offset, size); | |
| 494 stat = dev->funs->flash_program(dev, addr, ram, size); | |
| 495 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
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496 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM |
| 1706 | 497 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK |
| 498 if (!dev->funs->flash_read && memcmp((void *)addr, ram, size) != 0) { | |
| 499 stat = CYG_FLASH_ERR_DRV_VERIFY; | |
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500 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 501 dev->pf("V"); |
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502 #endif |
| 1706 | 503 } |
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504 #endif |
| 1706 | 505 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 506 *err_address = addr; | |
| 507 break; | |
| 508 } | |
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509 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 510 dev->pf("."); |
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511 #endif |
| 1706 | 512 length -= size; |
| 513 addr += size; | |
| 514 ram += size; | |
| 515 } | |
| 516 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 517 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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518 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 519 dev->pf("\n"); |
| 520 #endif | |
| 521 #ifdef CYGPKG_KERNEL | |
| 522 cyg_mutex_unlock(&dev->mutex); | |
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523 #endif |
| 1706 | 524 if (stat != CYG_FLASH_ERR_OK) { |
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525 return (stat); |
| 1706 | 526 } |
| 527 if ( flash_base + len - 1 > dev->end) { | |
| 528 return cyg_flash_program(dev->end+1, ram, | |
| 529 len - (dev->end - flash_base) - 1, | |
| 530 err_address); | |
| 531 } | |
| 532 return CYG_FLASH_ERR_OK; | |
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533 } |
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534 |
| 1706 | 535 __externC int |
| 536 cyg_flash_read(cyg_flashaddr_t flash_base, | |
| 537 const void *ram_base, | |
| 538 const size_t len, | |
| 539 cyg_flashaddr_t *err_address) | |
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540 { |
| 1706 | 541 struct cyg_flash_dev * dev; |
| 542 cyg_flashaddr_t addr, end_addr; | |
| 543 unsigned char * ram = (unsigned char *)ram_base; | |
| 544 size_t block_size, size, length, offset; | |
| 545 int stat = CYG_FLASH_ERR_OK; | |
| 546 int d_cache, i_cache; | |
| 547 | |
| 548 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 549 | |
| 550 for (dev = flash_head; | |
| 551 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 552 dev=dev->next) | |
| 553 ; | |
| 554 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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555 |
| 1706 | 556 #ifdef CYGPKG_KERNEL |
| 557 cyg_mutex_lock(&dev->mutex); | |
| 558 #endif | |
| 559 addr = flash_base; | |
| 560 end_addr = flash_base + len - 1; | |
| 561 if (end_addr > dev->end) { | |
| 562 end_addr = dev->end; | |
| 563 } | |
| 564 length = end_addr - addr + 1; | |
| 565 | |
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566 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 567 dev->pf("... Read from %p-%p to %p: ", addr, addr+len, ram_base); |
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568 #endif |
| 1706 | 569 |
| 570 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 571 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 572 while (addr <= end_addr) { | |
| 573 block_size = flash_block_size(dev, addr); | |
| 574 size = length; | |
| 575 // Only one block at once | |
| 576 if (size > block_size) size = block_size; | |
| 577 | |
| 578 // Reading from the middle of a block? | |
| 579 offset = (size_t)addr & (block_size-1); | |
| 580 if (offset) | |
| 581 size = MIN(block_size - offset, size); | |
| 582 if (dev->funs->flash_read) { | |
| 583 stat = dev->funs->flash_read(dev, addr, ram, size); | |
| 584 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 585 } else { | |
| 586 memcpy(ram, (void *)addr, size); | |
| 587 stat = CYG_FLASH_ERR_OK; | |
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588 } |
| 1706 | 589 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 590 *err_address = addr; | |
| 591 break; | |
| 592 } | |
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593 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 594 dev->pf("."); |
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595 #endif |
| 1706 | 596 length -= size; |
| 597 addr += size; | |
| 598 ram += size; | |
| 599 } | |
| 600 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 601 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
| 602 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 603 dev->pf("\n"); | |
| 604 #endif | |
| 605 #ifdef CYGPKG_KERNEL | |
| 606 cyg_mutex_unlock(&dev->mutex); | |
| 607 #endif | |
| 608 if (stat != CYG_FLASH_ERR_OK) { | |
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609 return (stat); |
| 1706 | 610 } |
| 611 if ( flash_base + len - 1 > dev->end) { | |
| 612 return cyg_flash_read(dev->end+1, ram, | |
| 613 len - (dev->end - flash_base) - 1, | |
| 614 err_address); | |
| 615 } | |
| 616 return CYG_FLASH_ERR_OK; | |
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617 } |
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618 |
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619 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING |
| 1706 | 620 __externC int |
| 621 cyg_flash_lock(const cyg_flashaddr_t flash_base, | |
| 622 const size_t len, | |
| 623 cyg_flashaddr_t *err_address) | |
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624 { |
| 1706 | 625 cyg_flashaddr_t block, end_addr, addr; |
| 626 struct cyg_flash_dev * dev; | |
| 627 size_t block_size; | |
| 628 int stat = CYG_FLASH_ERR_OK; | |
| 629 int d_cache, i_cache; | |
| 630 | |
| 631 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 632 | |
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633 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 634 if (plf_flash_query_soft_wp(addr,len)) |
| 635 return CYG_FLASH_ERR_PROTECT; | |
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636 #endif |
| 1706 | 637 |
| 638 for (dev = flash_head; | |
| 639 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 640 dev=dev->next) | |
| 641 ; | |
| 642 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 643 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID; | |
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644 |
| 1706 | 645 #ifdef CYGPKG_KERNEL |
| 646 cyg_mutex_lock(&dev->mutex); | |
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647 #endif |
| 1706 | 648 addr = flash_base; |
| 649 end_addr = flash_base + len - 1; | |
| 650 if (end_addr > dev->end) { | |
| 651 end_addr = dev->end; | |
| 652 } | |
| 653 | |
| 654 block_size = flash_block_size(dev, addr); | |
| 655 block = (cyg_flashaddr_t)((size_t)addr & ~(block_size - 1)); | |
| 656 | |
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657 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 658 dev->pf("... Locking from %p-%p: ", (void*)block, (void*)end_addr); |
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659 #endif |
| 1706 | 660 |
| 661 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 662 FLASH_Enable(block, end_addr); | |
| 663 while (block <= end_addr) { | |
| 664 stat = dev->funs->flash_block_lock(dev,block); | |
| 665 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 666 | |
| 667 if (CYG_FLASH_ERR_OK != stat && err_address) { | |
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668 *err_address = block; |
| 1706 | 669 break; |
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670 } |
| 1706 | 671 block += flash_block_size(dev, addr); |
| 672 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 673 dev->pf("."); | |
| 674 #endif | |
| 675 } | |
| 676 FLASH_Disable(block, end_addr); | |
| 677 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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678 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 679 dev->pf("\n"); |
| 680 #endif | |
| 681 #ifdef CYGPKG_KERNEL | |
| 682 cyg_mutex_unlock(&dev->mutex); | |
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683 #endif |
| 1706 | 684 if (stat != CYG_FLASH_ERR_OK) { |
| 685 return stat; | |
| 686 } | |
| 687 | |
| 688 if (flash_base + len - 1 > dev->end) { // Off by one? | |
| 689 // The region to erase if bigger than this driver handles. Recurse | |
| 690 return cyg_flash_lock(dev->end+1, | |
| 691 len - (dev->end - flash_base) - 1, | |
| 692 err_address); | |
| 693 } | |
| 694 return CYG_FLASH_ERR_OK; | |
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695 } |
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696 |
| 1706 | 697 __externC int |
| 698 cyg_flash_unlock(const cyg_flashaddr_t flash_base, | |
| 699 const size_t len, | |
| 700 cyg_flashaddr_t *err_address) | |
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701 { |
| 1706 | 702 cyg_flashaddr_t block, end_addr, addr; |
| 703 struct cyg_flash_dev * dev; | |
| 704 size_t block_size; | |
| 705 int stat = CYG_FLASH_ERR_OK; | |
| 706 int d_cache, i_cache; | |
| 707 | |
| 708 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 709 | |
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710 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 711 if (plf_flash_query_soft_wp(addr,len)) |
| 712 return CYG_FLASH_ERR_PROTECT; | |
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713 #endif |
| 1706 | 714 |
| 715 for (dev = flash_head; | |
| 716 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 717 dev=dev->next) | |
| 718 ; | |
| 719 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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720 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID; |
| 1706 | 721 |
| 722 #ifdef CYGPKG_KERNEL | |
| 723 cyg_mutex_lock(&dev->mutex); | |
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724 #endif |
| 1706 | 725 addr = flash_base; |
| 726 end_addr = flash_base + len - 1; | |
| 727 if (end_addr > dev->end) { | |
| 728 end_addr = dev->end; | |
| 729 } | |
| 730 | |
| 731 block_size = flash_block_size(dev, addr); | |
| 732 block = (cyg_flashaddr_t)((size_t)addr & ~(block_size - 1)); | |
| 733 | |
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734 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 735 dev->pf("... Unlocking from %p-%p: ", (void*)block, (void*)end_addr); |
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736 #endif |
| 1706 | 737 |
| 738 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 739 FLASH_Enable(block, end_addr); | |
| 740 while (block <= end_addr) { | |
| 741 stat = dev->funs->flash_block_unlock(dev,block); | |
| 742 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 743 | |
| 744 if (CYG_FLASH_ERR_OK != stat && err_address) { | |
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745 *err_address = block; |
| 1706 | 746 break; |
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747 } |
| 1706 | 748 block += flash_block_size(dev, addr); |
| 749 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 750 dev->pf("."); | |
| 751 #endif | |
| 752 } | |
| 753 FLASH_Disable(block, end_addr); | |
| 754 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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755 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 756 dev->pf("\n"); |
| 757 #endif | |
| 758 #ifdef CYGPKG_KERNEL | |
| 759 cyg_mutex_unlock(&dev->mutex); | |
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760 #endif |
| 1706 | 761 if (stat != CYG_FLASH_ERR_OK) { |
| 762 return stat; | |
| 763 } | |
| 764 | |
| 765 if (flash_base + len - 1 > dev->end) { // Off by one? | |
| 766 // The region to erase if bigger than this driver handles. Recurse | |
| 767 return cyg_flash_lock(dev->end+1, | |
| 768 len - (dev->end - flash_base) - 1, | |
| 769 err_address); | |
| 770 } | |
| 771 return CYG_FLASH_ERR_OK; | |
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772 } |
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773 #endif |
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774 |
| 1706 | 775 const char * |
| 776 cyg_flash_errmsg(const int err) | |
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777 { |
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778 switch (err) { |
| 1706 | 779 case CYG_FLASH_ERR_OK: |
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780 return "No error - operation complete"; |
| 1706 | 781 case CYG_FLASH_ERR_ERASE_SUSPEND: |
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782 return "Device is in erase suspend state"; |
| 1706 | 783 case CYG_FLASH_ERR_PROGRAM_SUSPEND: |
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784 return "Device is in program suspend state"; |
| 1706 | 785 case CYG_FLASH_ERR_INVALID: |
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786 return "Invalid FLASH address"; |
| 1706 | 787 case CYG_FLASH_ERR_ERASE: |
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788 return "Error trying to erase"; |
| 1706 | 789 case CYG_FLASH_ERR_LOCK: |
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790 return "Error trying to lock/unlock"; |
| 1706 | 791 case CYG_FLASH_ERR_PROGRAM: |
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792 return "Error trying to program"; |
| 1706 | 793 case CYG_FLASH_ERR_PROTOCOL: |
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794 return "Generic error"; |
| 1706 | 795 case CYG_FLASH_ERR_PROTECT: |
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796 return "Device/region is write-protected"; |
| 1706 | 797 case CYG_FLASH_ERR_NOT_INIT: |
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798 return "FLASH sub-system not initialized"; |
| 1706 | 799 case CYG_FLASH_ERR_DRV_VERIFY: |
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800 return "Data verify failed after operation"; |
| 1706 | 801 case CYG_FLASH_ERR_DRV_TIMEOUT: |
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802 return "Driver timed out waiting for device"; |
| 1706 | 803 case CYG_FLASH_ERR_DRV_WRONG_PART: |
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804 return "Driver does not support device"; |
| 1706 | 805 case CYG_FLASH_ERR_LOW_VOLTAGE: |
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806 return "Device reports low voltage"; |
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807 default: |
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808 return "Unknown error"; |
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809 } |
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810 } |
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811 |
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812 // EOF io/flash/..../flash.c |