Mercurial > flash_v2
annotate packages/io/flash/current/src/flash.c @ 1743:0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
reduce the number of #ifdef's in the main code
| author | bartv |
|---|---|
| date | Sun, 21 Nov 2004 11:20:18 +0000 |
| parents | a668b95e5f2e |
| children | f854ed1e81db |
| 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> |
| 1706 | 58 #ifdef CYGPKG_KERNEL |
| 59 #include <cyg/kernel/kapi.h> | |
| 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> |
| 1706 | 64 #include <cyg/hal/hal_tables.h> |
| 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. |
| 1706 | 72 // This can be used for running the function in place (RAM startup |
| 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 |
| 1400 | 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 |
| 1706 | 109 // Has the FLASH IO library been initialise? |
| 110 static bool init = false; | |
| 111 // We have a linked list of flash drivers. This is the head of the | |
| 112 // list | |
| 113 static struct cyg_flash_dev *flash_head = NULL; | |
| 114 | |
| 115 // This array contains entries for all flash devices that are | |
| 116 // installed in the system. | |
| 117 __externC struct cyg_flash_dev cyg_flashdevtab[]; | |
| 118 CYG_HAL_TABLE_BEGIN(cyg_flashdevtab, cyg_flashdev); | |
| 119 | |
| 120 // end of the flashdev table | |
| 121 __externC struct cyg_flash_dev cyg_flashdevtab_end; | |
| 122 CYG_HAL_TABLE_END(cyg_flashdevtab_end, cyg_flashdev); | |
| 1400 | 123 |
| 1706 | 124 // Sort the linked list into ascending order of flash address. Use a |
| 125 // primitive ripple sort, but since we don't expect to have many | |
| 126 // devices this should be OK. | |
| 127 static void flash_sort(void) | |
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128 { |
| 1706 | 129 bool moved; |
| 130 struct cyg_flash_dev *dev, **previous_next; | |
| 131 | |
| 132 // If there is zero or one device, short cut | |
| 133 if (flash_head == NULL || flash_head->next == NULL) | |
| 134 return; | |
| 135 | |
| 136 do { | |
| 137 moved=false; | |
| 138 for (dev=flash_head, previous_next=&flash_head; | |
| 139 dev->next; | |
| 140 previous_next = &dev->next, dev=dev->next ){ | |
| 141 if (dev->start > dev->next->start) { | |
| 142 *previous_next=dev->next; | |
| 143 dev->next = (*previous_next)->next; | |
| 144 (*previous_next)->next = dev; | |
| 145 moved=true; | |
| 146 break; | |
| 147 } | |
| 148 } | |
| 149 } while (moved); | |
| 150 } | |
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151 |
| 1706 | 152 // Walk the linked list and see if there are any overlaps in the |
| 153 // addresses the devices claim to use using. | |
| 154 static bool flash_check_overlap(void) | |
| 155 { | |
| 156 struct cyg_flash_dev *dev; | |
| 157 | |
| 158 // If there is zero or one device, short cut | |
| 159 if (flash_head == NULL || flash_head->next == NULL) | |
| 160 return false; | |
| 161 | |
| 162 for (dev=flash_head; dev->next; dev=dev->next){ | |
| 163 if (dev->end >= dev->next->start) | |
| 164 return true; | |
| 165 } | |
| 166 return false; | |
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167 } |
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168 |
| 1706 | 169 // Initialise all registered device. Any device that fails to |
| 170 // initialise we leave dev->init as false. Then sort the devices into | |
| 171 // ascending order of address and put them into a linked list. Lastly | |
| 172 // check if we have any overlap of the addresses. | |
| 173 __externC int | |
| 174 cyg_flash_init(cyg_flash_printf *pf) | |
|
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175 { |
| 1706 | 176 int err; |
| 177 struct cyg_flash_dev * dev; | |
| 178 | |
| 179 if (init) return CYG_FLASH_ERR_OK; | |
| 180 init = true; | |
| 181 | |
| 182 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) { | |
| 183 dev->pf = pf; | |
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184 LOCK_INIT(dev); |
| 1706 | 185 |
| 186 err = dev->funs->flash_init(dev); | |
| 187 if (err != CYG_FLASH_ERR_OK) { | |
| 188 continue; | |
| 189 } | |
| 190 CYG_ASSERT(dev->funs, "No flash functions"); | |
| 191 CYG_ASSERT(dev->num_block_infos, "No number of block infoss"); | |
| 192 CYG_ASSERT(dev->block_info, "No block infos"); | |
| 193 CYG_ASSERT(!(((cyg_flashaddr_t)dev->block_info >= dev->start) && | |
| 194 ((cyg_flashaddr_t)dev->block_info < dev->end)), | |
| 195 "Block info is in the flash"); | |
| 196 CYG_ASSERT(dev->funs->flash_erase_block, "No erase function"); | |
| 197 CYG_ASSERT(dev->funs->flash_program, "No program function"); | |
| 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 |
| 1706 | 209 dev->init = true; |
| 210 dev->next = flash_head; | |
| 211 flash_head = dev; | |
| 212 } | |
| 213 | |
| 214 flash_sort(); | |
| 215 | |
| 216 if (flash_check_overlap()) { | |
| 217 return CYG_FLASH_ERR_INVALID; | |
| 218 } | |
| 219 return CYG_FLASH_ERR_OK; | |
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220 } |
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221 |
| 1706 | 222 // Is the address within one of the flash drivers? |
| 223 __externC int | |
| 224 cyg_flash_verify_addr(const cyg_flashaddr_t address) | |
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225 { |
| 1706 | 226 struct cyg_flash_dev * dev; |
| 227 | |
| 228 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 229 | |
| 230 for (dev = flash_head; dev; dev=dev->next) { | |
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231 if ((dev->start <= address) && (address <= dev->end)) |
| 1706 | 232 return CYG_FLASH_ERR_OK; |
| 233 } | |
| 234 return CYG_FLASH_ERR_INVALID; | |
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235 } |
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236 |
| 1706 | 237 // See if a range of FLASH addresses overlaps currently running code |
| 238 __externC bool cyg_flash_code_overlaps(const cyg_flashaddr_t start, | |
| 239 const cyg_flashaddr_t end) | |
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240 { |
| 1706 | 241 extern char _stext[], _etext[]; |
| 242 | |
| 243 return ((((unsigned long)&_stext >= (unsigned long)start) && | |
| 244 ((unsigned long)&_stext < (unsigned long)end)) || | |
| 245 (((unsigned long)&_etext >= (unsigned long)start) && | |
| 246 ((unsigned long)&_etext < (unsigned long)end))); | |
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247 } |
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248 |
| 1706 | 249 // Return information about the Nth driver |
| 250 __externC int | |
| 251 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info) | |
| 252 { | |
| 253 struct cyg_flash_dev * dev; | |
| 254 | |
| 255 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 256 | |
| 257 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--) | |
| 258 ; | |
| 259 if (dev && !Nth) { | |
| 260 info->start = dev->start; | |
| 261 info->end = dev->end; | |
| 262 info->num_block_infos = dev->num_block_infos; | |
| 263 info->block_info = dev->block_info; | |
| 264 return CYG_FLASH_ERR_OK; | |
| 265 } | |
| 266 return CYG_FLASH_ERR_INVALID; | |
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267 } |
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268 |
| 1706 | 269 // Return information about the flash at the given address |
| 270 __externC int | |
| 271 cyg_flash_get_info_addr(cyg_flashaddr_t flash_base, cyg_flash_info_t * info) | |
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272 { |
| 1706 | 273 struct cyg_flash_dev *dev; |
| 274 | |
| 275 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 276 | |
| 277 for (dev = flash_head; dev ; dev=dev->next) { | |
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278 if ((dev->start <= flash_base) && ( flash_base <= dev->end)) { |
| 1706 | 279 info->start = dev->start; |
| 280 info->end = dev->end; | |
| 281 info->num_block_infos = dev->num_block_infos; | |
| 282 info->block_info = dev->block_info; | |
| 283 return CYG_FLASH_ERR_OK; | |
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284 } |
| 1706 | 285 } |
| 286 return CYG_FLASH_ERR_INVALID; | |
| 287 } | |
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288 |
| 1706 | 289 #ifdef CYGPKG_KERNEL |
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290 // Lock the mutex's for a range of addresses |
| 1706 | 291 __externC int |
| 292 cyg_flash_mutex_lock(const cyg_flashaddr_t from, const size_t len) | |
| 293 { | |
| 294 struct cyg_flash_dev * dev; | |
| 295 int err; | |
| 296 | |
| 297 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 298 | |
| 299 for (dev = flash_head; dev ; dev=dev->next) { | |
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300 if ((dev->start <= from) && ( from <= dev->end)) { |
| 1706 | 301 cyg_mutex_lock(&dev->mutex); |
| 302 if (dev->end > from+len) { | |
| 303 return CYG_FLASH_ERR_OK; | |
| 304 } else { // Check off by one? | |
| 305 //The region is bigger than this driver. Recurse | |
| 306 err = cyg_flash_mutex_lock(dev->end+1, (len - (dev->end - from))); | |
| 307 if (err != CYG_FLASH_ERR_OK) { | |
| 308 // Something went wrong, unlock what we just locked | |
| 309 cyg_mutex_unlock(&dev->mutex); | |
| 310 } | |
| 311 return err; | |
| 312 } | |
|
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313 } |
| 1706 | 314 } |
| 315 return CYG_FLASH_ERR_INVALID; | |
| 316 } | |
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317 |
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318 // Unlock the mutex's for a range of addresses |
| 1706 | 319 __externC int |
| 320 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, const size_t len) | |
| 321 { | |
| 322 struct cyg_flash_dev * dev; | |
| 323 int err; | |
| 324 | |
| 325 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 326 | |
| 327 for (dev = flash_head; dev ; dev=dev->next) { | |
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328 if ((dev->start <= from) && ( from <= dev->end)) { |
| 1706 | 329 cyg_mutex_unlock(&dev->mutex); |
| 330 if (dev->end > from+len) { | |
| 331 return CYG_FLASH_ERR_OK; | |
| 332 } else { // Check off by one? | |
| 333 //The region is bigger than this driver. Recurse | |
| 334 err = cyg_flash_mutex_unlock(dev->end+1, (len - (dev->end - from))); | |
| 335 return err; | |
| 336 } | |
| 337 } | |
| 338 } | |
| 339 return CYG_FLASH_ERR_INVALID; | |
| 340 } | |
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341 #endif |
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342 |
| 1706 | 343 // Return the size of the block which is at the given address |
| 344 static size_t | |
| 345 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr) | |
| 346 { | |
| 347 int i; | |
| 348 size_t offset; | |
| 349 | |
| 350 | |
| 351 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device"); | |
| 352 | |
| 353 offset = addr - dev->start; | |
| 354 for (i=0; i < dev->num_block_infos; i++) { | |
| 355 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size)) | |
| 356 return dev->block_info[i].block_size; | |
| 357 offset = offset - | |
| 358 (dev->block_info[i].blocks * dev->block_info[i].block_size); | |
| 359 } | |
| 360 CYG_FAIL("Programming error"); | |
| 361 return 0; | |
| 362 } | |
| 363 | |
| 364 // Return the size of the block which is at the given address | |
| 365 __externC size_t | |
| 366 cyg_flash_block_size(const cyg_flashaddr_t flash_base) | |
| 367 { | |
| 368 struct cyg_flash_dev * dev; | |
| 369 | |
| 370 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 371 | |
| 372 for (dev = flash_head; | |
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373 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
| 1706 | 374 dev=dev->next) |
| 375 ; | |
| 376 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 377 | |
| 378 return flash_block_size(dev, flash_base); | |
| 379 } | |
| 380 | |
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381 // Return the first address of a block. The flash might not be aligned |
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382 // in terms of its block size. So we have to be careful and use |
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383 // offsets. |
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384 static inline cyg_flashaddr_t |
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385 flash_block_begin(cyg_flashaddr_t addr, struct cyg_flash_dev *dev) |
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386 { |
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387 size_t block_size; |
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388 cyg_flashaddr_t offset; |
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389 |
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390 block_size = flash_block_size(dev, addr); |
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391 |
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392 offset = addr - dev->start; |
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393 offset = (offset / block_size) * block_size; |
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394 return offset + dev->start; |
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395 } |
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396 |
|
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397 |
| 1706 | 398 __externC int |
| 399 cyg_flash_erase(const cyg_flashaddr_t flash_base, | |
| 400 const size_t len, | |
| 401 cyg_flashaddr_t *err_address) | |
| 402 { | |
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403 cyg_flashaddr_t block, end_addr; |
| 1706 | 404 struct cyg_flash_dev * dev; |
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405 size_t erase_count; |
| 1706 | 406 int stat = CYG_FLASH_ERR_OK; |
| 407 int d_cache, i_cache; | |
| 408 | |
| 409 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 410 | |
| 411 for (dev = flash_head; | |
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412 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
| 1706 | 413 dev=dev->next) |
| 414 ; | |
| 415 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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416 |
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417 CHECK_SOFT_WRITE_PROTECT(flash_base, len); |
| 1706 | 418 |
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419 LOCK(dev); |
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420 |
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421 // Check whether or not we are going past the end of this device, on |
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422 // to the next one. If so the next device will be handled by a |
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423 // recursive call later on. |
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424 if (len > (dev->end + 1 - flash_base)) { |
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425 end_addr = dev->end; |
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426 } else { |
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427 end_addr = flash_base + len - 1; |
| 1706 | 428 } |
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429 // erase can only happen on a block boundary, so adjust for this |
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430 block = flash_block_begin(flash_base, dev); |
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431 erase_count = (end_addr + 1) - block; |
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432 |
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433 CHATTER(dev, "... Erase from %p-%p: ", (void*)block, (void*)end_addr); |
| 1706 | 434 |
| 435 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
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436 FLASH_Enable(flash_base, end_addr); |
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437 while (erase_count > 0) { |
| 1706 | 438 int i; |
| 439 unsigned char *dp; | |
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440 bool erased = false; |
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441 size_t block_size = flash_block_size(dev, block); |
| 1706 | 442 |
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443 // Pad to the block boundary, if necessary |
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444 if (erase_count < block_size) { |
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445 erase_count = block_size; |
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446 } |
|
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447 |
| 1706 | 448 // If there is a read function it probably means the flash |
| 449 // cannot be read directly. | |
| 450 if (!dev->funs->flash_read) { | |
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451 erased = true; |
| 1706 | 452 dp = (unsigned char *)block; |
| 453 for (i = 0; i < block_size; i++) { | |
| 454 if (*dp++ != (unsigned char)0xFF) { | |
| 455 erased = false; | |
| 456 break; | |
| 457 } | |
| 458 } | |
| 459 } | |
| 460 if (!erased) { | |
| 461 stat = dev->funs->flash_erase_block(dev,block); | |
| 462 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
|
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463 } |
| 1706 | 464 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 465 *err_address = block; | |
| 466 break; | |
| 467 } | |
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468 block += block_size; |
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469 erase_count -= block_size; |
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470 CHATTER(dev, "."); |
| 1706 | 471 } |
|
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472 FLASH_Disable(flash_base, end_addr); |
| 1706 | 473 HAL_FLASH_CACHES_ON(d_cache, i_cache); |
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474 CHATTER(dev, "\n"); |
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475 UNLOCK(dev); |
| 1706 | 476 if (stat != CYG_FLASH_ERR_OK) { |
| 477 return stat; | |
| 478 } | |
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479 |
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480 // If there are multiple flash devices in series the erase operation |
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481 // may touch successive devices. This can be handled by recursion. |
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482 // The stack overheads should be minimal because the number of |
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483 // devices will be small. |
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484 if (len > (dev->end + 1 - flash_base)) { |
| 1706 | 485 return cyg_flash_erase(dev->end+1, |
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486 len - (dev->end + 1 - flash_base), |
| 1706 | 487 err_address); |
| 488 } | |
| 489 return CYG_FLASH_ERR_OK; | |
|
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490 } |
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491 |
| 1706 | 492 __externC int |
| 493 cyg_flash_program(const cyg_flashaddr_t flash_base, | |
| 494 void *ram_base, | |
| 495 const size_t len, | |
| 496 cyg_flashaddr_t *err_address) | |
|
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497 { |
| 1706 | 498 struct cyg_flash_dev * dev; |
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499 cyg_flashaddr_t addr, end_addr, block; |
| 1706 | 500 unsigned char * ram = ram_base; |
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501 size_t write_count, offset; |
| 1706 | 502 int stat = CYG_FLASH_ERR_OK; |
| 503 int d_cache, i_cache; | |
| 504 | |
| 505 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
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506 |
| 1706 | 507 for (dev = flash_head; |
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508 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
| 1706 | 509 dev=dev->next) |
| 510 ; | |
| 511 if (!dev) return CYG_FLASH_ERR_INVALID; | |
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512 |
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513 CHECK_SOFT_WRITE_PROTECT(flash_base, len); |
| 1706 | 514 |
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515 LOCK(dev); |
| 1706 | 516 addr = flash_base; |
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517 if (len > (dev->end + 1 - flash_base)) { |
| 1706 | 518 end_addr = dev->end; |
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519 } else { |
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520 end_addr = flash_base + len - 1; |
| 1706 | 521 } |
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522 write_count = (end_addr + 1) - flash_base; |
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523 |
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524 // The first write may be in the middle of a block. Do the necessary |
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525 // adjustment here rather than inside the loop. |
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526 block = flash_block_begin(flash_base, dev); |
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527 if (addr == block) { |
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528 offset = 0; |
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529 } else { |
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530 offset = addr - block; |
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531 } |
| 1706 | 532 |
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533 CHATTER(dev, "... Program from %p-%p to %p: ", ram_base, ((CYG_ADDRESS)ram_base)+write_count, addr); |
| 1706 | 534 |
| 535 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
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536 FLASH_Enable(flash_base, end_addr); |
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537 while (write_count > 0) { |
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538 size_t block_size = flash_block_size(dev, addr); |
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539 size_t this_write; |
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540 if (write_count > (block_size - offset)) { |
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541 this_write = block_size - offset; |
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542 } else { |
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543 this_write = write_count; |
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544 } |
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545 // Only the first block may need the offset. |
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546 offset = 0; |
| 1706 | 547 |
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548 stat = dev->funs->flash_program(dev, addr, ram, this_write); |
| 1706 | 549 stat = dev->funs->flash_hwr_map_error(dev,stat); |
|
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550 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM |
| 1706 | 551 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK |
|
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552 if (!dev->funs->flash_read && memcmp((void *)addr, ram, this_write) != 0) { |
| 1706 | 553 stat = CYG_FLASH_ERR_DRV_VERIFY; |
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554 CHATTER(dev, "V"); |
| 1706 | 555 } |
|
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556 #endif |
| 1706 | 557 if (CYG_FLASH_ERR_OK != stat && err_address) { |
| 558 *err_address = addr; | |
| 559 break; | |
| 560 } | |
|
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561 CHATTER(dev, "."); |
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562 write_count -= this_write; |
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563 addr += this_write; |
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564 ram += this_write; |
| 1706 | 565 } |
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566 FLASH_Disable(flash_base, end_addr); |
| 1706 | 567 HAL_FLASH_CACHES_ON(d_cache, i_cache); |
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568 CHATTER(dev, "\n"); |
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569 UNLOCK(dev); |
| 1706 | 570 if (stat != CYG_FLASH_ERR_OK) { |
|
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571 return (stat); |
| 1706 | 572 } |
|
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573 if (len > (dev->end + 1 - flash_base)) { |
| 1706 | 574 return cyg_flash_program(dev->end+1, ram, |
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575 len - (dev->end + 1 - flash_base), |
| 1706 | 576 err_address); |
| 577 } | |
| 578 return CYG_FLASH_ERR_OK; | |
|
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579 } |
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580 |
| 1706 | 581 __externC int |
| 582 cyg_flash_read(cyg_flashaddr_t flash_base, | |
| 583 const void *ram_base, | |
| 584 const size_t len, | |
| 585 cyg_flashaddr_t *err_address) | |
|
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586 { |
| 1706 | 587 struct cyg_flash_dev * dev; |
|
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588 cyg_flashaddr_t addr, end_addr; |
| 1706 | 589 unsigned char * ram = (unsigned char *)ram_base; |
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590 size_t read_count; |
| 1706 | 591 int stat = CYG_FLASH_ERR_OK; |
| 592 | |
| 593 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
| 594 | |
| 595 for (dev = flash_head; | |
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596 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
| 1706 | 597 dev=dev->next) |
| 598 ; | |
| 599 if (!dev) return CYG_FLASH_ERR_INVALID; | |
|
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600 |
|
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601 LOCK(dev); |
| 1706 | 602 addr = flash_base; |
|
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603 if (len > (dev->end + 1 - flash_base)) { |
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604 end_addr = dev->end; |
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605 } else { |
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606 end_addr = flash_base + len - 1; |
| 1706 | 607 } |
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608 read_count = (end_addr + 1) - flash_base; |
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609 |
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610 CHATTER(dev, "... Read from %p-%p to %p: ", addr, end_addr, ram_base); |
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611 |
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612 // If the flash is directly accessible, just read it in one go. This |
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613 // still happens with the mutex locked to protect against concurrent |
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614 // programs/erases. |
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615 if (! dev->funs->flash_read) { |
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616 memcpy(ram, (void*)addr, read_count); |
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617 } else { |
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618 #ifndef CYGHWR_IO_FLASH_INDIRECT_READS |
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619 CYG_FAIL("read function supplied but indirect reads not enabled"); |
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620 stat = CYG_FLASH_ERR_PROTOCOL; |
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621 #else |
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622 // We have to indirect through the device driver. |
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623 // The first read may be in the middle of a block. Do the necessary |
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624 // adjustment here rather than inside the loop. |
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625 int d_cache, i_cache; |
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626 size_t offset; |
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627 cyg_flashaddr_t block = flash_block_begin(flash_base, dev); |
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628 if (addr == block) { |
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629 offset = 0; |
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630 } else { |
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631 offset = addr - block; |
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632 } |
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633 HAL_FLASH_CACHES_OFF(d_cache, i_cache); |
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634 FLASH_Enable(flash_base, end_addr); |
|
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635 while (read_count > 0) { |
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636 size_t block_size = flash_block_size(dev, addr); |
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|
637 size_t this_read; |
|
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638 if (read_count > (block_size - offset)) { |
|
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|
639 this_read = block_size - offset; |
|
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|
640 } else { |
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|
641 this_read = read_count; |
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|
642 } |
|
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|
643 // Only the first block may need the offset |
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|
644 offset = 0; |
| 1706 | 645 |
|
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646 stat = dev->funs->flash_read(dev, addr, ram, this_read); |
|
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647 stat = dev->funs->flash_hwr_map_error(dev,stat); |
|
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648 if (CYG_FLASH_ERR_OK != stat && err_address) { |
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|
649 *err_address = addr; |
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|
650 break; |
|
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|
651 } |
|
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652 CHATTER(dev, "."); |
|
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|
653 read_count -= this_read; |
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|
654 addr += this_read; |
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|
655 ram += this_read; |
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|
656 } |
|
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|
657 FLASH_Disable(flash_base, end_addr); |
|
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|
658 HAL_FLASH_CACHES_ON(d_cache, i_cache); |
|
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|
659 #endif |
| 1706 | 660 } |
|
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661 CHATTER(dev, "\n"); |
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|
662 UNLOCK(dev); |
| 1706 | 663 if (stat != CYG_FLASH_ERR_OK) { |
|
1223
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New platform - TAMS MOAB - and generic changes to support it
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|
664 return (stat); |
| 1706 | 665 } |
|
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666 if (len > (dev->end + 1 - flash_base)) { |
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|
667 return cyg_flash_read(dev->end+1, ram, |
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668 len - (dev->end + 1 - flash_base), |
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|
669 err_address); |
| 1706 | 670 } |
| 671 return CYG_FLASH_ERR_OK; | |
|
1223
dbcfe4e0dbd2
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|
672 } |
|
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|
673 |
|
177
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Merge from eCos master repository on 2001-08-10-19:22:57-BST
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|
674 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING |
| 1706 | 675 __externC int |
| 676 cyg_flash_lock(const cyg_flashaddr_t flash_base, | |
| 677 const size_t len, | |
| 678 cyg_flashaddr_t *err_address) | |
|
119
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|
679 { |
|
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|
680 cyg_flashaddr_t block, end_addr; |
| 1706 | 681 struct cyg_flash_dev * dev; |
|
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|
682 size_t lock_count; |
| 1706 | 683 int stat = CYG_FLASH_ERR_OK; |
| 684 int d_cache, i_cache; | |
| 685 | |
| 686 if (!init) return CYG_FLASH_ERR_NOT_INIT; | |
|
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|
687 |
| 1706 | 688 for (dev = flash_head; |
|
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Sort out the various loops to cope with boundary conditions,
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|
689 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
| 1706 | 690 dev=dev->next) |
| 691 ; | |
| 692 if (!dev) return CYG_FLASH_ERR_INVALID; | |
| 693 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID; | |
|
119
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|
694 |
|
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|
695 CHECK_SOFT_WRITE_PROTECT(flash_base, len); |
|
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|
696 |
|
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|
697 LOCK(dev); |
|
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|
698 if (len > (dev->end + 1 - flash_base)) { |
|
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diff
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|
699 end_addr = dev->end; |
|
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diff
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|
700 } else { |
|
9464c6747e99
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parents:
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diff
changeset
|
701 end_addr = flash_base + len - 1; |
| 1706 | 702 } |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
703 block = flash_block_begin(flash_base, dev); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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1730
diff
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|
704 lock_count = (end_addr + 1) - block; |
| 1706 | 705 |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
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|
706 CHATTER(dev, "... Locking from %p-%p: ", (void*)block, (void*)end_addr); |
| 1706 | 707 |
| 708 HAL_FLASH_CACHES_OFF(d_cache, i_cache); | |
|
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9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
709 FLASH_Enable(flash_base, end_addr); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
710 while (lock_count > 0) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
711 size_t block_size = flash_block_size(dev, block); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
712 if (lock_count < block_size) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
713 lock_count = block_size; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
714 } |
| 1706 | 715 stat = dev->funs->flash_block_lock(dev,block); |
| 716 stat = dev->funs->flash_hwr_map_error(dev,stat); | |
| 717 | |
| 718 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
|
719 *err_address = block; |
| 1706 | 720 break; |
|
119
77cec8369160
Merge from eCos master repository on 2000-09-01-07:47:03-BST
jlarmour
parents:
117
diff
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|
721 } |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
722 block += block_size; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
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diff
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|
723 lock_count -= block_size; |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
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|
724 CHATTER(dev, "."); |
| 1706 | 725 } |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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1730
diff
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|
726 FLASH_Disable(flash_base, end_addr); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
changeset
|
727 HAL_FLASH_CACHES_ON(d_cache, i_cache); |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
bartv
parents:
1742
diff
changeset
|
728 CHATTER(dev, "\n"); |
|
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
bartv
parents:
1742
diff
changeset
|
729 UNLOCK(dev); |
|
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Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
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|
730 if (stat != CYG_FLASH_ERR_OK) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
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diff
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|
731 return stat; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
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|
732 } |
|
9464c6747e99
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bartv
parents:
1730
diff
changeset
|
733 |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
734 // Recurse if necessary for the next device |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
735 if (len > (dev->end + 1 - flash_base)) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
736 return cyg_flash_lock(dev->end+1, |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
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1730
diff
changeset
|
737 len - (dev->end + 1 - flash_base), |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
738 err_address); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
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|
739 } |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
740 |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
741 return CYG_FLASH_ERR_OK; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
742 } |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
743 |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
744 __externC int |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
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diff
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|
745 cyg_flash_unlock(const cyg_flashaddr_t flash_base, |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
746 const size_t len, |
|
9464c6747e99
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parents:
1730
diff
changeset
|
747 cyg_flashaddr_t *err_address) |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
748 { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
749 cyg_flashaddr_t block, end_addr; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
750 struct cyg_flash_dev * dev; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
751 size_t unlock_count; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
752 int stat = CYG_FLASH_ERR_OK; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
753 int d_cache, i_cache; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
754 |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
755 if (!init) return CYG_FLASH_ERR_NOT_INIT; |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
bartv
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diff
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|
756 |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
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|
757 for (dev = flash_head; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
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diff
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|
758 dev && !((dev->start <= flash_base) && ( flash_base <= dev->end)); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
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|
759 dev=dev->next) |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
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|
760 ; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
761 if (!dev) return CYG_FLASH_ERR_INVALID; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
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diff
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|
762 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID; |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
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diff
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|
763 |
|
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
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diff
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|
764 CHECK_SOFT_WRITE_PROTECT(flash_base, len); |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
765 |
|
1743
0d824ba900cc
Encapsulate various bits of optional functionality inside macros, to
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diff
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|
766 LOCK(dev); |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
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|
767 if (len > (dev->end + 1 - flash_base)) { |
|
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Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
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|
768 end_addr = dev->end; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
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|
769 } else { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
770 end_addr = flash_base + len - 1; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
771 } |
|
9464c6747e99
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1730
diff
changeset
|
772 block = flash_block_begin(flash_base, dev); |
|
9464c6747e99
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bartv
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diff
changeset
|
773 unlock_count = (end_addr + 1) - block; |
|
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Sort out the various loops to cope with boundary conditions,
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1730
diff
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|
774 |
|
1743
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Encapsulate various bits of optional functionality inside macros, to
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parents:
1742
diff
changeset
|
775 CHATTER(dev, "... Unlocking from %p-%p: ", (void*)block, (void*)end_addr); |
|
1741
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
776 |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
777 HAL_FLASH_CACHES_OFF(d_cache, i_cache); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
778 FLASH_Enable(flash_base, end_addr); |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
changeset
|
779 while (unlock_count > 0) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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diff
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|
780 size_t block_size = flash_block_size(dev, block); |
|
9464c6747e99
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diff
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|
781 if (unlock_count < block_size) { |
|
9464c6747e99
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parents:
1730
diff
changeset
|
782 unlock_count = block_size; |
|
9464c6747e99
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diff
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|
783 } |
|
9464c6747e99
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diff
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|
784 stat = dev->funs->flash_block_unlock(dev,block); |
|
9464c6747e99
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diff
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|
785 stat = dev->funs->flash_hwr_map_error(dev,stat); |
|
9464c6747e99
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parents:
1730
diff
changeset
|
786 |
|
9464c6747e99
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parents:
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diff
changeset
|
787 if (CYG_FLASH_ERR_OK != stat && err_address) { |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
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parents:
1730
diff
changeset
|
788 *err_address = block; |
|
9464c6747e99
Sort out the various loops to cope with boundary conditions,
bartv
parents:
1730
diff
changeset
|
789 break; |
|
9464c6747e99
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parents:
1730
diff
changeset
|
790 } |
|
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791 block += block_size; |
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792 unlock_count -= block_size; |
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793 |
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794 CHATTER(dev, "."); |
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795 } |
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796 FLASH_Disable(flash_base, end_addr); |
| 1706 | 797 HAL_FLASH_CACHES_ON(d_cache, i_cache); |
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798 CHATTER(dev, "\n"); |
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799 UNLOCK(dev); |
| 1706 | 800 if (stat != CYG_FLASH_ERR_OK) { |
| 801 return stat; | |
| 802 } | |
| 803 | |
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804 // Recurse if necessary for the next device |
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805 if (len > (dev->end + 1 - flash_base)) { |
| 1706 | 806 return cyg_flash_lock(dev->end+1, |
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807 len - (dev->end + 1 - flash_base), |
| 1706 | 808 err_address); |
| 809 } | |
| 810 return CYG_FLASH_ERR_OK; | |
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811 } |
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812 #endif |
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813 |
| 1706 | 814 const char * |
| 815 cyg_flash_errmsg(const int err) | |
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816 { |
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817 switch (err) { |
| 1706 | 818 case CYG_FLASH_ERR_OK: |
|
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819 return "No error - operation complete"; |
| 1706 | 820 case CYG_FLASH_ERR_ERASE_SUSPEND: |
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821 return "Device is in erase suspend state"; |
| 1706 | 822 case CYG_FLASH_ERR_PROGRAM_SUSPEND: |
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823 return "Device is in program suspend state"; |
| 1706 | 824 case CYG_FLASH_ERR_INVALID: |
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825 return "Invalid FLASH address"; |
| 1706 | 826 case CYG_FLASH_ERR_ERASE: |
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827 return "Error trying to erase"; |
| 1706 | 828 case CYG_FLASH_ERR_LOCK: |
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829 return "Error trying to lock/unlock"; |
| 1706 | 830 case CYG_FLASH_ERR_PROGRAM: |
|
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831 return "Error trying to program"; |
| 1706 | 832 case CYG_FLASH_ERR_PROTOCOL: |
|
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833 return "Generic error"; |
| 1706 | 834 case CYG_FLASH_ERR_PROTECT: |
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835 return "Device/region is write-protected"; |
| 1706 | 836 case CYG_FLASH_ERR_NOT_INIT: |
|
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837 return "FLASH sub-system not initialized"; |
| 1706 | 838 case CYG_FLASH_ERR_DRV_VERIFY: |
|
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839 return "Data verify failed after operation"; |
| 1706 | 840 case CYG_FLASH_ERR_DRV_TIMEOUT: |
|
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841 return "Driver timed out waiting for device"; |
| 1706 | 842 case CYG_FLASH_ERR_DRV_WRONG_PART: |
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843 return "Driver does not support device"; |
| 1706 | 844 case CYG_FLASH_ERR_LOW_VOLTAGE: |
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845 return "Device reports low voltage"; |
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846 default: |
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847 return "Unknown error"; |
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848 } |
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849 } |
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850 |
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851 // EOF io/flash/..../flash.c |