Mercurial > flash_v2
annotate packages/io/flash/current/src/flash.c @ 1730:3f6b1c304c7a
* src/flash.c: Offset into the block is not calculated correctly
when the flash start is not aligned on a flash block.
* src/legacy_dev.c (legacy_flash_read): Fixed typo.
| author | asl |
|---|---|
| date | Thu, 30 Sep 2004 18:09:20 +0000 |
| parents | e290a0372578 |
| children | 9464c6747e99 |
| 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"); | |
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173 #ifdef CYGDBG_USE_ASSERTS |
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174 { |
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175 int i; |
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176 cyg_flashaddr_t addr = dev->start; |
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177 for (i = 0; i < dev->num_block_infos; i++) { |
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178 addr += dev->block_info[i].block_size * dev->block_info[i].blocks; |
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179 } |
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180 CYG_ASSERT(dev->end == addr-1, "Invalid end address"); |
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181 } |
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182 #endif |
| 1706 | 183 dev->init = true; |
| 184 dev->next = flash_head; | |
| 185 flash_head = dev; | |
| 186 } | |
| 187 | |
| 188 flash_sort(); | |
| 189 | |
| 190 if (flash_check_overlap()) { | |
| 191 return CYG_FLASH_ERR_INVALID; | |
| 192 } | |
| 193 return CYG_FLASH_ERR_OK; | |
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194 } |
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195 |
| 1706 | 196 // Is the address within one of the flash drivers? |
| 197 __externC int | |
| 198 cyg_flash_verify_addr(const cyg_flashaddr_t address) | |
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199 { |
| 1706 | 200 struct cyg_flash_dev * dev; |
| 201 | |
| 202 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 203 | |
| 204 for (dev = flash_head; dev; dev=dev->next) { | |
| 205 if ((dev->start <= address) && (dev->end > address)) | |
| 206 return CYG_FLASH_ERR_OK; | |
| 207 } | |
| 208 return CYG_FLASH_ERR_INVALID; | |
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209 } |
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210 |
| 1706 | 211 // See if a range of FLASH addresses overlaps currently running code |
| 212 __externC bool cyg_flash_code_overlaps(const cyg_flashaddr_t start, | |
| 213 const cyg_flashaddr_t end) | |
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214 { |
| 1706 | 215 extern char _stext[], _etext[]; |
| 216 | |
| 217 return ((((unsigned long)&_stext >= (unsigned long)start) && | |
| 218 ((unsigned long)&_stext < (unsigned long)end)) || | |
| 219 (((unsigned long)&_etext >= (unsigned long)start) && | |
| 220 ((unsigned long)&_etext < (unsigned long)end))); | |
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221 } |
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222 |
| 1706 | 223 // Return information about the Nth driver |
| 224 __externC int | |
| 225 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info) | |
| 226 { | |
| 227 struct cyg_flash_dev * dev; | |
| 228 | |
| 229 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 230 | |
| 231 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--) | |
| 232 ; | |
| 233 if (dev && !Nth) { | |
| 234 info->start = dev->start; | |
| 235 info->end = dev->end; | |
| 236 info->num_block_infos = dev->num_block_infos; | |
| 237 info->block_info = dev->block_info; | |
| 238 return CYG_FLASH_ERR_OK; | |
| 239 } | |
| 240 return CYG_FLASH_ERR_INVALID; | |
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241 } |
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242 |
| 1706 | 243 // Return information about the flash at the given address |
| 244 __externC int | |
| 245 cyg_flash_get_info_addr(cyg_flashaddr_t flash_base, cyg_flash_info_t * info) | |
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246 { |
| 1706 | 247 struct cyg_flash_dev *dev; |
| 248 | |
| 249 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 250 | |
| 251 for (dev = flash_head; dev ; dev=dev->next) { | |
| 252 if ((dev->start <= flash_base) && ( dev->end > flash_base)) { | |
| 253 info->start = dev->start; | |
| 254 info->end = dev->end; | |
| 255 info->num_block_infos = dev->num_block_infos; | |
| 256 info->block_info = dev->block_info; | |
| 257 return CYG_FLASH_ERR_OK; | |
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258 } |
| 1706 | 259 } |
| 260 return CYG_FLASH_ERR_INVALID; | |
| 261 } | |
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262 |
| 1706 | 263 #ifdef CYGPKG_KERNEL |
| 264 //Lock the mutex's for a range of addresses | |
| 265 __externC int | |
| 266 cyg_flash_mutex_lock(const cyg_flashaddr_t from, const size_t len) | |
| 267 { | |
| 268 struct cyg_flash_dev * dev; | |
| 269 int err; | |
| 270 | |
| 271 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 272 | |
| 273 for (dev = flash_head; dev ; dev=dev->next) { | |
| 274 if ((dev->start <= from) && ( dev->end > from)) { | |
| 275 cyg_mutex_lock(&dev->mutex); | |
| 276 if (dev->end > from+len) { | |
| 277 return CYG_FLASH_ERR_OK; | |
| 278 } else { // Check off by one? | |
| 279 //The region is bigger than this driver. Recurse | |
| 280 err = cyg_flash_mutex_lock(dev->end+1, (len - (dev->end - from))); | |
| 281 if (err != CYG_FLASH_ERR_OK) { | |
| 282 // Something went wrong, unlock what we just locked | |
| 283 cyg_mutex_unlock(&dev->mutex); | |
| 284 } | |
| 285 return err; | |
| 286 } | |
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287 } |
| 1706 | 288 } |
| 289 return CYG_FLASH_ERR_INVALID; | |
| 290 } | |
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291 |
| 1706 | 292 //Unlock the mutex's for a range of addresses |
| 293 __externC int | |
| 294 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, const size_t len) | |
| 295 { | |
| 296 struct cyg_flash_dev * dev; | |
| 297 int err; | |
| 298 | |
| 299 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 300 | |
| 301 for (dev = flash_head; dev ; dev=dev->next) { | |
| 302 if ((dev->start <= from) && ( dev->end > from)) { | |
| 303 cyg_mutex_unlock(&dev->mutex); | |
| 304 if (dev->end > from+len) { | |
| 305 return CYG_FLASH_ERR_OK; | |
| 306 } else { // Check off by one? | |
| 307 //The region is bigger than this driver. Recurse | |
| 308 err = cyg_flash_mutex_unlock(dev->end+1, (len - (dev->end - from))); | |
| 309 return err; | |
| 310 } | |
| 311 } | |
| 312 } | |
| 313 return CYG_FLASH_ERR_INVALID; | |
| 314 } | |
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315 #endif |
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316 |
| 1706 | 317 // Return the size of the block which is at the given address |
| 318 static size_t | |
| 319 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr) | |
| 320 { | |
| 321 int i; | |
| 322 size_t offset; | |
| 323 | |
| 324 | |
| 325 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device"); | |
| 326 | |
| 327 offset = addr - dev->start; | |
| 328 for (i=0; i < dev->num_block_infos; i++) { | |
| 329 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size)) | |
| 330 return dev->block_info[i].block_size; | |
| 331 offset = offset - | |
| 332 (dev->block_info[i].blocks * dev->block_info[i].block_size); | |
| 333 } | |
| 334 CYG_FAIL("Programming error"); | |
| 335 return 0; | |
| 336 } | |
| 337 | |
| 338 // Return the size of the block which is at the given address | |
| 339 __externC size_t | |
| 340 cyg_flash_block_size(const cyg_flashaddr_t flash_base) | |
| 341 { | |
| 342 struct cyg_flash_dev * dev; | |
| 343 | |
| 344 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 345 | |
| 346 for (dev = flash_head; | |
| 347 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 348 dev=dev->next) | |
| 349 ; | |
| 350 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 351 | |
| 352 return flash_block_size(dev, flash_base); | |
| 353 } | |
| 354 | |
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355 // Return the first address of a block. The flash might not be aligned |
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356 // in terms of its block size. So we have to be careful and use |
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357 // offsets. |
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358 static inline cyg_flashaddr_t |
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359 flash_block_begin(cyg_flashaddr_t addr, struct cyg_flash_dev *dev) |
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360 { |
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361 size_t block_size; |
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362 cyg_flashaddr_t offset; |
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363 |
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364 block_size = flash_block_size(dev, addr); |
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365 |
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366 offset = addr - dev->start; |
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367 offset = (offset / block_size) * block_size; |
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368 return offset + dev->start; |
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369 } |
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370 |
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371 |
| 1706 | 372 __externC int |
| 373 cyg_flash_erase(const cyg_flashaddr_t flash_base, | |
| 374 const size_t len, | |
| 375 cyg_flashaddr_t *err_address) | |
| 376 { | |
| 377 cyg_flashaddr_t block, end_addr, addr; | |
| 378 struct cyg_flash_dev * dev; | |
| 379 size_t block_size; | |
| 380 int stat = CYG_FLASH_ERR_OK; | |
| 381 int d_cache, i_cache; | |
| 382 | |
| 383 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 384 | |
| 385 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT | |
| 386 if (plf_flash_query_soft_wp(addr,len)) | |
| 387 return CYG_FLASH_ERR_PROTECT; | |
| 388 #endif | |
| 389 | |
| 390 for (dev = flash_head; | |
| 391 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 392 dev=dev->next) | |
| 393 ; | |
| 394 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 395 | |
| 396 #ifdef CYGPKG_KERNEL | |
| 397 cyg_mutex_lock(&dev->mutex); | |
| 398 #endif | |
| 399 addr = flash_base; | |
| 400 end_addr = flash_base + len - 1; | |
| 401 if (end_addr > dev->end) { | |
| 402 end_addr = dev->end; | |
| 403 } | |
| 404 | |
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405 block = flash_block_begin(addr, dev); |
| 1706 | 406 |
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407 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 408 dev->pf("... Erase from %p-%p: ", (void*)block, (void*)end_addr); |
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409 #endif |
| 1706 | 410 |
| 411 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 412 FLASH_Enable(block, end_addr); | |
| 413 while (block <= end_addr) { | |
| 414 int i; | |
| 415 unsigned char *dp; | |
| 416 bool erased = true; | |
| 417 | |
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418 block_size = flash_block_size(dev, addr); |
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419 |
| 1706 | 420 // If there is a read function it probably means the flash |
| 421 // cannot be read directly. | |
| 422 if (!dev->funs->flash_read) { | |
| 423 dp = (unsigned char *)block; | |
| 424 for (i = 0; i < block_size; i++) { | |
| 425 if (*dp++ != (unsigned char)0xFF) { | |
| 426 erased = false; | |
| 427 break; | |
| 428 } | |
| 429 } | |
| 430 } else { | |
| 431 erased=false; | |
| 432 } | |
| 433 if (!erased) { | |
| 434 stat = dev->funs->flash_erase_block(dev,block); | |
| 435 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
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436 } |
| 1706 | 437 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 438 *err_address = block; | |
| 439 break; | |
| 440 } | |
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441 block += block_size; |
| 1706 | 442 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 443 dev->pf("."); | |
| 444 #endif | |
| 445 } | |
| 446 FLASH_Disable(block, end_addr); | |
| 447 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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448 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 449 dev->pf("\n"); |
| 450 #endif | |
| 451 #ifdef CYGPKG_KERNEL | |
| 452 cyg_mutex_unlock(&dev->mutex); | |
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453 #endif |
| 1706 | 454 if (stat != CYG_FLASH_ERR_OK) { |
| 455 return stat; | |
| 456 } | |
| 457 | |
| 458 if (flash_base + len - 1 > dev->end) { | |
| 459 // The region to erase if bigger than this driver handles. Recurse | |
| 460 return cyg_flash_erase(dev->end+1, | |
| 461 len - (dev->end - flash_base) - 1, | |
| 462 err_address); | |
| 463 } | |
| 464 return CYG_FLASH_ERR_OK; | |
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465 } |
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466 |
| 1706 | 467 __externC int |
| 468 cyg_flash_program(const cyg_flashaddr_t flash_base, | |
| 469 void *ram_base, | |
| 470 const size_t len, | |
| 471 cyg_flashaddr_t *err_address) | |
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472 { |
| 1706 | 473 struct cyg_flash_dev * dev; |
| 474 cyg_flashaddr_t addr, end_addr; | |
| 475 unsigned char * ram = ram_base; | |
| 476 size_t block_size, size, length, offset; | |
| 477 int stat = CYG_FLASH_ERR_OK; | |
| 478 int d_cache, i_cache; | |
| 479 | |
| 480 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 481 | |
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482 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 483 if (plf_flash_query_soft_wp(addr,len)) |
| 484 return CYG_FLASH_ERR_PROTECT; | |
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485 #endif |
| 1706 | 486 |
| 487 for (dev = flash_head; | |
| 488 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 489 dev=dev->next) | |
| 490 ; | |
| 491 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 492 | |
| 493 #ifdef CYGPKG_KERNEL | |
| 494 cyg_mutex_lock(&dev->mutex); | |
| 495 #endif | |
| 496 addr = flash_base; | |
| 497 end_addr = flash_base + len - 1; | |
| 498 if (end_addr > dev->end) { | |
| 499 end_addr = dev->end; | |
| 500 } | |
| 501 length = end_addr - addr + 1; | |
| 502 | |
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503 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 504 dev->pf("... Program from %p-%p to %p: ", ram_base, |
| 505 ((CYG_ADDRESS)ram_base)+length, addr); | |
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506 #endif |
| 1706 | 507 |
| 508 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 509 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 510 while (addr <= end_addr) { | |
| 511 block_size = flash_block_size(dev, addr); | |
| 512 size = length; | |
| 513 // Only one block at once | |
| 514 if (size > block_size) size = block_size; | |
| 515 | |
| 516 // Writing from the middle of a block? | |
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517 offset = (size_t)(addr - dev->start) % block_size; |
| 1706 | 518 if (offset) |
| 519 size = MIN(block_size - offset, size); | |
| 520 stat = dev->funs->flash_program(dev, addr, ram, size); | |
| 521 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
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522 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM |
| 1706 | 523 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK |
| 524 if (!dev->funs->flash_read && memcmp((void *)addr, ram, size) != 0) { | |
| 525 stat = CYG_FLASH_ERR_DRV_VERIFY; | |
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526 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 527 dev->pf("V"); |
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528 #endif |
| 1706 | 529 } |
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530 #endif |
| 1706 | 531 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 532 *err_address = addr; | |
| 533 break; | |
| 534 } | |
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535 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 536 dev->pf("."); |
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537 #endif |
| 1706 | 538 length -= size; |
| 539 addr += size; | |
| 540 ram += size; | |
| 541 } | |
| 542 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 543 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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544 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 545 dev->pf("\n"); |
| 546 #endif | |
| 547 #ifdef CYGPKG_KERNEL | |
| 548 cyg_mutex_unlock(&dev->mutex); | |
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549 #endif |
| 1706 | 550 if (stat != CYG_FLASH_ERR_OK) { |
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551 return (stat); |
| 1706 | 552 } |
| 553 if ( flash_base + len - 1 > dev->end) { | |
| 554 return cyg_flash_program(dev->end+1, ram, | |
| 555 len - (dev->end - flash_base) - 1, | |
| 556 err_address); | |
| 557 } | |
| 558 return CYG_FLASH_ERR_OK; | |
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559 } |
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560 |
| 1706 | 561 __externC int |
| 562 cyg_flash_read(cyg_flashaddr_t flash_base, | |
| 563 const void *ram_base, | |
| 564 const size_t len, | |
| 565 cyg_flashaddr_t *err_address) | |
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566 { |
| 1706 | 567 struct cyg_flash_dev * dev; |
| 568 cyg_flashaddr_t addr, end_addr; | |
| 569 unsigned char * ram = (unsigned char *)ram_base; | |
| 570 size_t block_size, size, length, offset; | |
| 571 int stat = CYG_FLASH_ERR_OK; | |
| 572 int d_cache, i_cache; | |
| 573 | |
| 574 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 575 | |
| 576 for (dev = flash_head; | |
| 577 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 578 dev=dev->next) | |
| 579 ; | |
| 580 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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581 |
| 1706 | 582 #ifdef CYGPKG_KERNEL |
| 583 cyg_mutex_lock(&dev->mutex); | |
| 584 #endif | |
| 585 addr = flash_base; | |
| 586 end_addr = flash_base + len - 1; | |
| 587 if (end_addr > dev->end) { | |
| 588 end_addr = dev->end; | |
| 589 } | |
| 590 length = end_addr - addr + 1; | |
| 591 | |
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592 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 593 dev->pf("... Read from %p-%p to %p: ", addr, addr+len, ram_base); |
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594 #endif |
| 1706 | 595 |
| 596 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 597 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 598 while (addr <= end_addr) { | |
| 599 block_size = flash_block_size(dev, addr); | |
| 600 size = length; | |
| 601 // Only one block at once | |
| 602 if (size > block_size) size = block_size; | |
| 603 | |
| 604 // Reading from the middle of a block? | |
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605 offset = (size_t)(addr - dev->start) % block_size; |
| 1706 | 606 if (offset) |
| 607 size = MIN(block_size - offset, size); | |
| 608 if (dev->funs->flash_read) { | |
| 609 stat = dev->funs->flash_read(dev, addr, ram, size); | |
| 610 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 611 } else { | |
| 612 memcpy(ram, (void *)addr, size); | |
| 613 stat = CYG_FLASH_ERR_OK; | |
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614 } |
| 1706 | 615 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 616 *err_address = addr; | |
| 617 break; | |
| 618 } | |
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619 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 620 dev->pf("."); |
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621 #endif |
| 1706 | 622 length -= size; |
| 623 addr += size; | |
| 624 ram += size; | |
| 625 } | |
| 626 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len)); | |
| 627 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
| 628 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 629 dev->pf("\n"); | |
| 630 #endif | |
| 631 #ifdef CYGPKG_KERNEL | |
| 632 cyg_mutex_unlock(&dev->mutex); | |
| 633 #endif | |
| 634 if (stat != CYG_FLASH_ERR_OK) { | |
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635 return (stat); |
| 1706 | 636 } |
| 637 if ( flash_base + len - 1 > dev->end) { | |
| 638 return cyg_flash_read(dev->end+1, ram, | |
| 639 len - (dev->end - flash_base) - 1, | |
| 640 err_address); | |
| 641 } | |
| 642 return CYG_FLASH_ERR_OK; | |
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643 } |
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644 |
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645 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING |
| 1706 | 646 __externC int |
| 647 cyg_flash_lock(const cyg_flashaddr_t flash_base, | |
| 648 const size_t len, | |
| 649 cyg_flashaddr_t *err_address) | |
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650 { |
| 1706 | 651 cyg_flashaddr_t block, end_addr, addr; |
| 652 struct cyg_flash_dev * dev; | |
| 653 size_t block_size; | |
| 654 int stat = CYG_FLASH_ERR_OK; | |
| 655 int d_cache, i_cache; | |
| 656 | |
| 657 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 658 | |
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659 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 660 if (plf_flash_query_soft_wp(addr,len)) |
| 661 return CYG_FLASH_ERR_PROTECT; | |
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662 #endif |
| 1706 | 663 |
| 664 for (dev = flash_head; | |
| 665 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 666 dev=dev->next) | |
| 667 ; | |
| 668 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 669 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID; | |
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670 |
| 1706 | 671 #ifdef CYGPKG_KERNEL |
| 672 cyg_mutex_lock(&dev->mutex); | |
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673 #endif |
| 1706 | 674 addr = flash_base; |
| 675 end_addr = flash_base + len - 1; | |
| 676 if (end_addr > dev->end) { | |
| 677 end_addr = dev->end; | |
| 678 } | |
| 679 | |
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680 block = flash_block_begin(addr, dev); |
| 1706 | 681 |
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682 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 683 dev->pf("... Locking from %p-%p: ", (void*)block, (void*)end_addr); |
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684 #endif |
| 1706 | 685 |
| 686 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 687 FLASH_Enable(block, end_addr); | |
| 688 while (block <= end_addr) { | |
| 689 stat = dev->funs->flash_block_lock(dev,block); | |
| 690 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 691 | |
| 692 if (CYG_FLASH_ERR_OK != stat && err_address) { | |
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693 *err_address = block; |
| 1706 | 694 break; |
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695 } |
| 1706 | 696 block += flash_block_size(dev, addr); |
| 697 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 698 dev->pf("."); | |
| 699 #endif | |
| 700 } | |
| 701 FLASH_Disable(block, end_addr); | |
| 702 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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703 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 704 dev->pf("\n"); |
| 705 #endif | |
| 706 #ifdef CYGPKG_KERNEL | |
| 707 cyg_mutex_unlock(&dev->mutex); | |
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708 #endif |
| 1706 | 709 if (stat != CYG_FLASH_ERR_OK) { |
| 710 return stat; | |
| 711 } | |
| 712 | |
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713 if (flash_base + len - 1 > dev->end) { |
| 1706 | 714 // The region to erase if bigger than this driver handles. Recurse |
| 715 return cyg_flash_lock(dev->end+1, | |
| 716 len - (dev->end - flash_base) - 1, | |
| 717 err_address); | |
| 718 } | |
| 719 return CYG_FLASH_ERR_OK; | |
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720 } |
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721 |
| 1706 | 722 __externC int |
| 723 cyg_flash_unlock(const cyg_flashaddr_t flash_base, | |
| 724 const size_t len, | |
| 725 cyg_flashaddr_t *err_address) | |
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726 { |
| 1706 | 727 cyg_flashaddr_t block, end_addr, addr; |
| 728 struct cyg_flash_dev * dev; | |
| 729 size_t block_size; | |
| 730 int stat = CYG_FLASH_ERR_OK; | |
| 731 int d_cache, i_cache; | |
| 732 | |
| 733 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 734 | |
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735 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT |
| 1706 | 736 if (plf_flash_query_soft_wp(addr,len)) |
| 737 return CYG_FLASH_ERR_PROTECT; | |
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738 #endif |
| 1706 | 739 |
| 740 for (dev = flash_head; | |
| 741 dev && !((dev->start <= flash_base) && ( dev->end > flash_base)); | |
| 742 dev=dev->next) | |
| 743 ; | |
| 744 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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745 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID; |
| 1706 | 746 |
| 747 #ifdef CYGPKG_KERNEL | |
| 748 cyg_mutex_lock(&dev->mutex); | |
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749 #endif |
| 1706 | 750 addr = flash_base; |
| 751 end_addr = flash_base + len - 1; | |
| 752 if (end_addr > dev->end) { | |
| 753 end_addr = dev->end; | |
| 754 } | |
| 755 | |
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756 block = block = flash_block_begin(addr, dev); |
| 1706 | 757 |
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758 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 759 dev->pf("... Unlocking from %p-%p: ", (void*)block, (void*)end_addr); |
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760 #endif |
| 1706 | 761 |
| 762 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
| 763 FLASH_Enable(block, end_addr); | |
| 764 while (block <= end_addr) { | |
| 765 stat = dev->funs->flash_block_unlock(dev,block); | |
| 766 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 767 | |
| 768 if (CYG_FLASH_ERR_OK != stat && err_address) { | |
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769 *err_address = block; |
| 1706 | 770 break; |
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771 } |
| 1706 | 772 block += flash_block_size(dev, addr); |
| 773 #ifdef CYGSEM_IO_FLASH_CHATTER | |
| 774 dev->pf("."); | |
| 775 #endif | |
| 776 } | |
| 777 FLASH_Disable(block, end_addr); | |
| 778 HAL_FLASH_CACHES_ON(d_cache, i_cache); | |
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779 #ifdef CYGSEM_IO_FLASH_CHATTER |
| 1706 | 780 dev->pf("\n"); |
| 781 #endif | |
| 782 #ifdef CYGPKG_KERNEL | |
| 783 cyg_mutex_unlock(&dev->mutex); | |
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784 #endif |
| 1706 | 785 if (stat != CYG_FLASH_ERR_OK) { |
| 786 return stat; | |
| 787 } | |
| 788 | |
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789 if (flash_base + len - 1 > dev->end) { |
| 1706 | 790 // The region to erase if bigger than this driver handles. Recurse |
| 791 return cyg_flash_lock(dev->end+1, | |
| 792 len - (dev->end - flash_base) - 1, | |
| 793 err_address); | |
| 794 } | |
| 795 return CYG_FLASH_ERR_OK; | |
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796 } |
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797 #endif |
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798 |
| 1706 | 799 const char * |
| 800 cyg_flash_errmsg(const int err) | |
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801 { |
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802 switch (err) { |
| 1706 | 803 case CYG_FLASH_ERR_OK: |
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804 return "No error - operation complete"; |
| 1706 | 805 case CYG_FLASH_ERR_ERASE_SUSPEND: |
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806 return "Device is in erase suspend state"; |
| 1706 | 807 case CYG_FLASH_ERR_PROGRAM_SUSPEND: |
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808 return "Device is in program suspend state"; |
| 1706 | 809 case CYG_FLASH_ERR_INVALID: |
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810 return "Invalid FLASH address"; |
| 1706 | 811 case CYG_FLASH_ERR_ERASE: |
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812 return "Error trying to erase"; |
| 1706 | 813 case CYG_FLASH_ERR_LOCK: |
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814 return "Error trying to lock/unlock"; |
| 1706 | 815 case CYG_FLASH_ERR_PROGRAM: |
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816 return "Error trying to program"; |
| 1706 | 817 case CYG_FLASH_ERR_PROTOCOL: |
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818 return "Generic error"; |
| 1706 | 819 case CYG_FLASH_ERR_PROTECT: |
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820 return "Device/region is write-protected"; |
| 1706 | 821 case CYG_FLASH_ERR_NOT_INIT: |
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822 return "FLASH sub-system not initialized"; |
| 1706 | 823 case CYG_FLASH_ERR_DRV_VERIFY: |
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824 return "Data verify failed after operation"; |
| 1706 | 825 case CYG_FLASH_ERR_DRV_TIMEOUT: |
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826 return "Driver timed out waiting for device"; |
| 1706 | 827 case CYG_FLASH_ERR_DRV_WRONG_PART: |
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828 return "Driver does not support device"; |
| 1706 | 829 case CYG_FLASH_ERR_LOW_VOLTAGE: |
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830 return "Device reports low voltage"; |
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831 default: |
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832 return "Unknown error"; |
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833 } |
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834 } |
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835 |
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836 // EOF io/flash/..../flash.c |