1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* |
4 |
|
|
* This program and the accompanying materials are made available under the |
5 |
|
|
* terms of the MIT License which is available at |
6 |
|
|
* https://opensource.org/licenses/MIT. |
7 |
|
|
* |
8 |
|
|
* SPDX-License-Identifier: MIT |
9 |
|
|
**************************************************************************/ |
10 |
|
|
|
11 |
|
|
|
12 |
|
|
/**************************************************************************/ |
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/** */ |
15 |
|
|
/** LevelX Component */ |
16 |
|
|
/** */ |
17 |
|
|
/** NOR Flash */ |
18 |
|
|
/** */ |
19 |
|
|
/**************************************************************************/ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
#define LX_SOURCE_CODE |
23 |
|
|
|
24 |
|
|
|
25 |
|
|
/* Disable ThreadX error checking. */ |
26 |
|
|
|
27 |
|
|
#ifndef LX_DISABLE_ERROR_CHECKING |
28 |
|
|
#define LX_DISABLE_ERROR_CHECKING |
29 |
|
|
#endif |
30 |
|
|
|
31 |
|
|
|
32 |
|
|
/* Include necessary system files. */ |
33 |
|
|
|
34 |
|
|
#include "lx_api.h" |
35 |
|
|
|
36 |
|
|
|
37 |
|
|
/**************************************************************************/ |
38 |
|
|
/* */ |
39 |
|
|
/* FUNCTION RELEASE */ |
40 |
|
|
/* */ |
41 |
|
|
/* _lx_nor_flash_block_reclaim PORTABLE C */ |
42 |
|
|
/* 6.3.0 */ |
43 |
|
|
/* AUTHOR */ |
44 |
|
|
/* */ |
45 |
|
|
/* William E. Lamie, Microsoft Corporation */ |
46 |
|
|
/* */ |
47 |
|
|
/* DESCRIPTION */ |
48 |
|
|
/* */ |
49 |
|
|
/* This function reclaims one block from the NOR flash. */ |
50 |
|
|
/* */ |
51 |
|
|
/* INPUT */ |
52 |
|
|
/* */ |
53 |
|
|
/* nor_flash NOR flash instance */ |
54 |
|
|
/* */ |
55 |
|
|
/* OUTPUT */ |
56 |
|
|
/* */ |
57 |
|
|
/* return status */ |
58 |
|
|
/* */ |
59 |
|
|
/* CALLS */ |
60 |
|
|
/* */ |
61 |
|
|
/* _lx_nor_flash_driver_block_erase Driver erase block */ |
62 |
|
|
/* _lx_nor_flash_driver_write Driver flash sector write */ |
63 |
|
|
/* _lx_nor_flash_driver_read Driver flash sector read */ |
64 |
|
|
/* _lx_nor_flash_next_block_to_erase_find */ |
65 |
|
|
/* Find next block to erase */ |
66 |
|
|
/* _lx_nor_flash_physical_sector_allocate */ |
67 |
|
|
/* Allocate new logical sector */ |
68 |
|
|
/* _lx_nor_flash_sector_mapping_cache_invalidate */ |
69 |
|
|
/* Invalidate cache entry */ |
70 |
|
|
/* _lx_nor_flash_system_error Internal system error handler */ |
71 |
|
|
/* */ |
72 |
|
|
/* CALLED BY */ |
73 |
|
|
/* */ |
74 |
|
|
/* Internal LevelX */ |
75 |
|
|
/* */ |
76 |
|
|
/* RELEASE HISTORY */ |
77 |
|
|
/* */ |
78 |
|
|
/* DATE NAME DESCRIPTION */ |
79 |
|
|
/* */ |
80 |
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
81 |
|
|
/* 09-30-2020 William E. Lamie Modified comment(s), */ |
82 |
|
|
/* resulting in version 6.1 */ |
83 |
|
|
/* 06-02-2021 Bhupendra Naphade Modified comment(s), */ |
84 |
|
|
/* resulting in version 6.1.7 */ |
85 |
|
|
/* 10-31-2023 Xiuwen Cai Modified comment(s), */ |
86 |
|
|
/* added count for minimum */ |
87 |
|
|
/* erased blocks, added */ |
88 |
|
|
/* obsolete count cache, */ |
89 |
|
|
/* resulting in version 6.3.0 */ |
90 |
|
|
/* */ |
91 |
|
|
/**************************************************************************/ |
92 |
|
1160 |
UINT _lx_nor_flash_block_reclaim(LX_NOR_FLASH *nor_flash) |
93 |
|
|
{ |
94 |
|
|
|
95 |
|
|
ULONG *block_word_ptr; |
96 |
|
|
ULONG *list_word_ptr; |
97 |
|
|
ULONG list_word; |
98 |
|
|
ULONG i; |
99 |
|
|
ULONG erase_block; |
100 |
|
|
ULONG erase_count; |
101 |
|
|
ULONG temp_erase_count; |
102 |
|
|
ULONG erase_started_value; |
103 |
|
|
ULONG mapped_sectors; |
104 |
|
|
ULONG obsolete_sectors; |
105 |
|
|
ULONG free_sectors; |
106 |
|
|
ULONG logical_sector; |
107 |
|
|
ULONG *new_mapping_address; |
108 |
|
|
ULONG *new_sector_address; |
109 |
|
|
ULONG new_mapping_entry; |
110 |
|
|
UINT status; |
111 |
|
|
|
112 |
|
|
|
113 |
|
|
/* Determine the next block to erase. */ |
114 |
|
1160 |
_lx_nor_flash_next_block_to_erase_find(nor_flash, &erase_block, &erase_count, &mapped_sectors, &obsolete_sectors); |
115 |
|
|
|
116 |
|
|
/* Determine if the search pointer is set for this block. */ |
117 |
✓✓ |
1160 |
if (nor_flash -> lx_nor_flash_free_block_search == erase_block) |
118 |
|
|
{ |
119 |
|
|
|
120 |
|
|
/* Ensure the search block is not the block we are trying to free. */ |
121 |
|
196 |
nor_flash -> lx_nor_flash_free_block_search = erase_block + 1; |
122 |
|
|
|
123 |
|
|
/* Check for wrap condition. */ |
124 |
✓✓ |
196 |
if (nor_flash -> lx_nor_flash_free_block_search >= nor_flash -> lx_nor_flash_total_blocks) |
125 |
|
22 |
nor_flash -> lx_nor_flash_free_block_search = 0; |
126 |
|
|
} |
127 |
|
|
|
128 |
|
|
/* Setup the block word pointer to the first word of the search block. */ |
129 |
|
1160 |
block_word_ptr = nor_flash -> lx_nor_flash_base_address + (nor_flash -> lx_nor_flash_words_per_block * erase_block); |
130 |
|
|
|
131 |
|
|
/* Determine if this block is completely obsolete. */ |
132 |
✗✓ |
1160 |
if (obsolete_sectors == nor_flash -> lx_nor_flash_physical_sectors_per_block) |
133 |
|
|
{ |
134 |
|
|
|
135 |
|
|
/* Write the erased started indication. */ |
136 |
|
|
erase_started_value = LX_BLOCK_ERASE_STARTED; |
137 |
|
|
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &erase_started_value, 1); |
138 |
|
|
|
139 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
140 |
|
|
if (status) |
141 |
|
|
{ |
142 |
|
|
|
143 |
|
|
/* Call system error handler. */ |
144 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
145 |
|
|
|
146 |
|
|
/* Return the error. */ |
147 |
|
|
return(status); |
148 |
|
|
} |
149 |
|
|
|
150 |
|
|
/* Erase the entire block. */ |
151 |
|
|
status = _lx_nor_flash_driver_block_erase(nor_flash, erase_block, erase_count+1); |
152 |
|
|
|
153 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
154 |
|
|
if (status) |
155 |
|
|
{ |
156 |
|
|
|
157 |
|
|
/* Call system error handler. */ |
158 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
159 |
|
|
|
160 |
|
|
/* Return the error. */ |
161 |
|
|
return(status); |
162 |
|
|
} |
163 |
|
|
|
164 |
|
|
/* Determine if the erase count is at the minimum. */ |
165 |
|
|
if (erase_count == nor_flash -> lx_nor_flash_minimum_erase_count) |
166 |
|
|
{ |
167 |
|
|
|
168 |
|
|
/* Yes, decrement the minimum erased block count. */ |
169 |
|
|
nor_flash -> lx_nor_flash_minimum_erased_blocks--; |
170 |
|
|
} |
171 |
|
|
|
172 |
|
|
/* Increment the erase count. */ |
173 |
|
|
erase_count++; |
174 |
|
|
|
175 |
|
|
/* Determine if the new erase count exceeds the maximum. */ |
176 |
|
|
if (erase_count > ((ULONG) LX_BLOCK_ERASE_COUNT_MAX)) |
177 |
|
|
{ |
178 |
|
|
|
179 |
|
|
/* Yes, erase count is in overflow. Stay at the maximum count. */ |
180 |
|
|
erase_count = ((ULONG) LX_BLOCK_ERASE_COUNT_MAX); |
181 |
|
|
} |
182 |
|
|
|
183 |
|
|
/* Determine if we need to update the maximum erase count. */ |
184 |
|
|
if (erase_count > nor_flash -> lx_nor_flash_maximum_erase_count) |
185 |
|
|
{ |
186 |
|
|
|
187 |
|
|
/* Yes, a new maximum is present. */ |
188 |
|
|
nor_flash -> lx_nor_flash_maximum_erase_count = erase_count; |
189 |
|
|
} |
190 |
|
|
|
191 |
|
|
/* Setup the free bit map that corresponds to the free physical sectors in this |
192 |
|
|
block. Note that we only need to setup the portion of the free bit map that doesn't |
193 |
|
|
have sectors associated with it. */ |
194 |
|
|
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr+(nor_flash -> lx_nor_flash_block_free_bit_map_offset + (nor_flash -> lx_nor_flash_block_bit_map_words - 1)), |
195 |
|
|
&(nor_flash -> lx_nor_flash_block_bit_map_mask), 1); |
196 |
|
|
|
197 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
198 |
|
|
if (status) |
199 |
|
|
{ |
200 |
|
|
|
201 |
|
|
/* Call system error handler. */ |
202 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
203 |
|
|
|
204 |
|
|
/* Return the error. */ |
205 |
|
|
return(status); |
206 |
|
|
} |
207 |
|
|
|
208 |
|
|
/* Write the initial erase count for the block with upper bit set. */ |
209 |
|
|
temp_erase_count = (erase_count | LX_BLOCK_ERASED); |
210 |
|
|
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &temp_erase_count, 1); |
211 |
|
|
|
212 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
213 |
|
|
if (status) |
214 |
|
|
{ |
215 |
|
|
|
216 |
|
|
/* Call system error handler. */ |
217 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
218 |
|
|
|
219 |
|
|
/* Return the error. */ |
220 |
|
|
return(status); |
221 |
|
|
} |
222 |
|
|
|
223 |
|
|
/* Write the final initial erase count for the block. */ |
224 |
|
|
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &erase_count, 1); |
225 |
|
|
|
226 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
227 |
|
|
if (status) |
228 |
|
|
{ |
229 |
|
|
|
230 |
|
|
/* Call system error handler. */ |
231 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
232 |
|
|
|
233 |
|
|
/* Return the error. */ |
234 |
|
|
return(status); |
235 |
|
|
} |
236 |
|
|
|
237 |
|
|
/* Update parameters of this flash. */ |
238 |
|
|
nor_flash -> lx_nor_flash_free_physical_sectors = nor_flash -> lx_nor_flash_free_physical_sectors + obsolete_sectors; |
239 |
|
|
nor_flash -> lx_nor_flash_obsolete_physical_sectors = nor_flash -> lx_nor_flash_obsolete_physical_sectors - obsolete_sectors; |
240 |
|
|
#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE |
241 |
|
|
|
242 |
|
|
/* Check if the block is cached by obsolete count cache. */ |
243 |
|
|
if (erase_block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block) |
244 |
|
|
{ |
245 |
|
|
|
246 |
|
|
/* Yes, clear the obsolete count for this block. */ |
247 |
|
|
nor_flash -> lx_nor_flash_extended_cache_obsolete_count[erase_block] = 0; |
248 |
|
|
} |
249 |
|
|
#endif |
250 |
|
|
} |
251 |
|
|
else |
252 |
|
|
{ |
253 |
|
|
|
254 |
|
|
/* Calculate the number of free sectors in this block. */ |
255 |
|
1160 |
free_sectors = nor_flash -> lx_nor_flash_physical_sectors_per_block - (obsolete_sectors + mapped_sectors); |
256 |
|
|
|
257 |
|
|
/* Determine if there are enough free sectors outside of this block to reclaim this block. */ |
258 |
✓✗ |
1160 |
if (mapped_sectors <= (nor_flash -> lx_nor_flash_free_physical_sectors - free_sectors)) |
259 |
|
|
{ |
260 |
|
|
|
261 |
|
|
/* Setup a pointer to the mapped list. */ |
262 |
|
1160 |
list_word_ptr = block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_mapping_offset; |
263 |
|
|
|
264 |
|
|
/* Now search through the list to find mapped sectors to move. */ |
265 |
✓✗ |
17106 |
for (i = 0; i < nor_flash -> lx_nor_flash_physical_sectors_per_block; i++) |
266 |
|
|
{ |
267 |
|
|
|
268 |
|
|
/* Pickup the mapped sector list entry. */ |
269 |
|
|
#ifdef LX_DIRECT_READ |
270 |
|
|
|
271 |
|
|
/* Read the word directly. */ |
272 |
|
|
list_word = *(list_word_ptr); |
273 |
|
|
#else |
274 |
|
17106 |
status = _lx_nor_flash_driver_read(nor_flash, list_word_ptr, &list_word, 1); |
275 |
|
|
|
276 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
277 |
✗✓ |
17106 |
if (status) |
278 |
|
|
{ |
279 |
|
|
|
280 |
|
|
/* Call system error handler. */ |
281 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
282 |
|
|
|
283 |
|
|
/* Return the error. */ |
284 |
|
|
return(status); |
285 |
|
|
} |
286 |
|
|
#endif |
287 |
|
|
|
288 |
|
|
/* Determine if the entry hasn't been used. */ |
289 |
✗✓ |
17106 |
if (list_word == LX_NOR_PHYSICAL_SECTOR_FREE) |
290 |
|
|
{ |
291 |
|
|
|
292 |
|
|
/* Since allocations are done sequentially in the block, we know nothing |
293 |
|
|
else exists after this point. */ |
294 |
|
|
break; |
295 |
|
|
} |
296 |
|
|
|
297 |
|
|
/* Is this entry mapped? */ |
298 |
✓✓ |
17106 |
if (list_word & LX_NOR_PHYSICAL_SECTOR_VALID) |
299 |
|
|
{ |
300 |
|
|
|
301 |
|
|
/* Pickup the logical sector associated with this mapped physical sector. */ |
302 |
|
15118 |
logical_sector = list_word & LX_NOR_LOGICAL_SECTOR_MASK; |
303 |
|
|
|
304 |
|
|
/* Invalidate the old sector mapping cache entry. */ |
305 |
|
15118 |
_lx_nor_flash_sector_mapping_cache_invalidate(nor_flash, logical_sector); |
306 |
|
|
|
307 |
|
|
/* Allocate a new physical sector for this write. */ |
308 |
|
15118 |
_lx_nor_flash_physical_sector_allocate(nor_flash, logical_sector, &new_mapping_address, &new_sector_address); |
309 |
|
|
|
310 |
|
|
/* Check to see if the new sector is also in the erase block. */ |
311 |
✓✓✗✓
|
15118 |
if ((new_sector_address >= block_word_ptr) && (new_sector_address < (block_word_ptr + nor_flash -> lx_nor_flash_words_per_block))) |
312 |
|
|
{ |
313 |
|
|
|
314 |
|
|
/* Yes, the new sector was found in the block to be erased. Simply move the search pointer |
315 |
|
|
to the block after the erase block and search for another sector from there. */ |
316 |
|
|
nor_flash -> lx_nor_flash_free_block_search = erase_block + 1; |
317 |
|
|
|
318 |
|
|
/* Check for wrap condition. */ |
319 |
|
|
if (nor_flash -> lx_nor_flash_free_block_search >= nor_flash -> lx_nor_flash_total_blocks) |
320 |
|
|
nor_flash -> lx_nor_flash_free_block_search = 0; |
321 |
|
|
|
322 |
|
|
/* Allocate a new physical sector for this write. */ |
323 |
|
|
_lx_nor_flash_physical_sector_allocate(nor_flash, logical_sector, &new_mapping_address, &new_sector_address); |
324 |
|
|
|
325 |
|
|
/* Check again for the new sector inside of the block to erase. This should be impossible, since |
326 |
|
|
we check previously if there are enough free sectors outside of this block needed to reclaim |
327 |
|
|
this block. */ |
328 |
|
|
if ((new_sector_address >= block_word_ptr) && (new_sector_address < (block_word_ptr + LX_NOR_SECTOR_SIZE))) |
329 |
|
|
{ |
330 |
|
|
|
331 |
|
|
/* System error, a new sector is not available outside of the erase block. |
332 |
|
|
Clear the new sector so we fall through to the error handling. */ |
333 |
|
|
new_mapping_address = LX_NULL; |
334 |
|
|
} |
335 |
|
|
} |
336 |
|
|
|
337 |
|
|
/* Determine if the new sector allocation was successful. */ |
338 |
✓✗ |
15118 |
if (new_mapping_address) |
339 |
|
|
{ |
340 |
|
|
|
341 |
|
|
/* Yes, we were able to allocate a new physical sector. */ |
342 |
|
|
|
343 |
|
|
#ifdef LX_DIRECT_READ |
344 |
|
|
/* First, write the sector data to the new physical sector. */ |
345 |
|
|
status = _lx_nor_flash_driver_write(nor_flash, new_sector_address, (block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_offset) + |
346 |
|
|
(i * LX_NOR_SECTOR_SIZE), LX_NOR_SECTOR_SIZE); |
347 |
|
|
|
348 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
349 |
|
|
if (status) |
350 |
|
|
{ |
351 |
|
|
|
352 |
|
|
/* Call system error handler. */ |
353 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
354 |
|
|
|
355 |
|
|
/* Return the error. */ |
356 |
|
|
return(status); |
357 |
|
|
} |
358 |
|
|
#else |
359 |
|
|
|
360 |
|
|
/* First, read the sector data into the internal memory of the NOR flash instance. This internal memory |
361 |
|
|
is supplied by the underlying driver during initialization. */ |
362 |
|
15118 |
status = _lx_nor_flash_driver_read(nor_flash, (block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_offset) + |
363 |
|
|
(i * LX_NOR_SECTOR_SIZE), nor_flash -> lx_nor_flash_sector_buffer, |
364 |
|
|
LX_NOR_SECTOR_SIZE); |
365 |
|
|
|
366 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
367 |
✗✓ |
15118 |
if (status) |
368 |
|
|
{ |
369 |
|
|
|
370 |
|
|
/* Call system error handler. */ |
371 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
372 |
|
|
|
373 |
|
|
/* Return the error. */ |
374 |
|
|
return(status); |
375 |
|
|
} |
376 |
|
|
|
377 |
|
|
/* Next, write the sector data from the internal buffer to the new physical sector. */ |
378 |
|
15118 |
status = _lx_nor_flash_driver_write(nor_flash, new_sector_address, nor_flash -> lx_nor_flash_sector_buffer, LX_NOR_SECTOR_SIZE); |
379 |
|
|
|
380 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
381 |
✗✓ |
15118 |
if (status) |
382 |
|
|
{ |
383 |
|
|
|
384 |
|
|
/* Call system error handler. */ |
385 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
386 |
|
|
|
387 |
|
|
/* Return the error. */ |
388 |
|
|
return(status); |
389 |
|
|
} |
390 |
|
|
#endif |
391 |
|
|
|
392 |
|
|
/* Now deprecate the old sector mapping. */ |
393 |
|
|
|
394 |
|
|
/* Clear bit 30, which indicates this sector is superceded. */ |
395 |
|
15118 |
list_word = list_word & ~((ULONG) LX_NOR_PHYSICAL_SECTOR_SUPERCEDED); |
396 |
|
|
|
397 |
|
|
/* Write the value back to the flash to clear bit 30. */ |
398 |
|
15118 |
status = _lx_nor_flash_driver_write(nor_flash, list_word_ptr, &list_word, 1); |
399 |
|
|
|
400 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
401 |
✗✓ |
15118 |
if (status) |
402 |
|
|
{ |
403 |
|
|
|
404 |
|
|
/* Call system error handler. */ |
405 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
406 |
|
|
|
407 |
|
|
/* Return the error. */ |
408 |
|
|
return(status); |
409 |
|
|
} |
410 |
|
|
|
411 |
|
|
/* Now build the new mapping entry - with the not valid bit set initially. */ |
412 |
|
15118 |
new_mapping_entry = ((ULONG) LX_NOR_PHYSICAL_SECTOR_VALID) | ((ULONG) LX_NOR_PHYSICAL_SECTOR_SUPERCEDED) | (ULONG) LX_NOR_PHYSICAL_SECTOR_MAPPING_NOT_VALID | logical_sector; |
413 |
|
|
|
414 |
|
|
/* Write out the new mapping entry. */ |
415 |
|
15118 |
status = _lx_nor_flash_driver_write(nor_flash, new_mapping_address, &new_mapping_entry, 1); |
416 |
|
|
|
417 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
418 |
✗✓ |
15118 |
if (status) |
419 |
|
|
{ |
420 |
|
|
|
421 |
|
|
/* Call system error handler. */ |
422 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
423 |
|
|
|
424 |
|
|
/* Return the error. */ |
425 |
|
|
return(status); |
426 |
|
|
} |
427 |
|
|
|
428 |
|
|
/* Now clear the not valid bit to make this sector mapping valid. This is done because the writing of the extra bytes itself can |
429 |
|
|
be interrupted and we need to make sure this can be detected when the flash is opened again. */ |
430 |
|
15118 |
new_mapping_entry = new_mapping_entry & ~((ULONG) LX_NOR_PHYSICAL_SECTOR_MAPPING_NOT_VALID); |
431 |
|
|
|
432 |
|
|
/* Clear the not valid bit. */ |
433 |
|
15118 |
status = _lx_nor_flash_driver_write(nor_flash, new_mapping_address, &new_mapping_entry, 1); |
434 |
|
|
|
435 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
436 |
✗✓ |
15118 |
if (status) |
437 |
|
|
{ |
438 |
|
|
|
439 |
|
|
/* Call system error handler. */ |
440 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
441 |
|
|
|
442 |
|
|
/* Return the error. */ |
443 |
|
|
return(status); |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
/* Now clear bit 31, which indicates this sector is now obsoleted. */ |
447 |
|
15118 |
list_word = list_word & ~((ULONG) LX_NOR_PHYSICAL_SECTOR_VALID); |
448 |
|
|
|
449 |
|
|
/* Write the value back to the flash to clear bit 31. */ |
450 |
|
15118 |
status = _lx_nor_flash_driver_write(nor_flash, list_word_ptr, &list_word, 1); |
451 |
|
|
|
452 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
453 |
✗✓ |
15118 |
if (status) |
454 |
|
|
{ |
455 |
|
|
|
456 |
|
|
/* Call system error handler. */ |
457 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
458 |
|
|
|
459 |
|
|
/* Return the error. */ |
460 |
|
|
return(status); |
461 |
|
|
} |
462 |
|
|
} |
463 |
|
|
else |
464 |
|
|
{ |
465 |
|
|
|
466 |
|
|
/* Call system error handler - the allocation should always succeed at this point. */ |
467 |
|
|
_lx_nor_flash_system_error(nor_flash, LX_SYSTEM_ALLOCATION_FAILED); |
468 |
|
|
|
469 |
|
|
/* Return the error. */ |
470 |
|
|
return(status); |
471 |
|
|
} |
472 |
|
|
|
473 |
|
|
/* Decrement the number of mapped sectors. */ |
474 |
|
15118 |
mapped_sectors--; |
475 |
|
|
|
476 |
|
|
/* Determine if we are done. */ |
477 |
✓✓ |
15118 |
if (mapped_sectors == 0) |
478 |
|
1160 |
break; |
479 |
|
|
} |
480 |
|
|
|
481 |
|
|
/* Move the list pointer ahead. */ |
482 |
|
15946 |
list_word_ptr++; |
483 |
|
|
} |
484 |
|
|
|
485 |
|
|
/* Write the erased started indication. */ |
486 |
|
1160 |
erase_started_value = LX_BLOCK_ERASE_STARTED; |
487 |
|
1160 |
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &erase_started_value, 1); |
488 |
|
|
|
489 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
490 |
✗✓ |
1160 |
if (status) |
491 |
|
|
{ |
492 |
|
|
|
493 |
|
|
/* Call system error handler. */ |
494 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
495 |
|
|
|
496 |
|
|
/* Return the error. */ |
497 |
|
|
return(status); |
498 |
|
|
} |
499 |
|
|
|
500 |
|
|
/* Erase the entire block. */ |
501 |
|
1160 |
status = _lx_nor_flash_driver_block_erase(nor_flash, erase_block, erase_count+1); |
502 |
|
|
|
503 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
504 |
✗✓ |
1160 |
if (status) |
505 |
|
|
{ |
506 |
|
|
|
507 |
|
|
/* Call system error handler. */ |
508 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
509 |
|
|
|
510 |
|
|
/* Return the error. */ |
511 |
|
|
return(status); |
512 |
|
|
} |
513 |
|
|
|
514 |
|
|
/* Determine if the erase count is at the minimum. */ |
515 |
✓✓ |
1160 |
if (erase_count == nor_flash -> lx_nor_flash_minimum_erase_count) |
516 |
|
|
{ |
517 |
|
|
|
518 |
|
|
/* Yes, decrement the minimum erased block count. */ |
519 |
|
582 |
nor_flash -> lx_nor_flash_minimum_erased_blocks--; |
520 |
|
|
} |
521 |
|
|
|
522 |
|
|
/* Increment the erase count. */ |
523 |
|
1160 |
erase_count++; |
524 |
|
|
|
525 |
|
|
/* Determine if the new erase count exceeds the maximum. */ |
526 |
✗✓ |
1160 |
if (erase_count > ((ULONG) LX_BLOCK_ERASE_COUNT_MAX)) |
527 |
|
|
{ |
528 |
|
|
|
529 |
|
|
/* Yes, erase count is in overflow. Stay at the maximum count. */ |
530 |
|
|
erase_count = ((ULONG) LX_BLOCK_ERASE_COUNT_MAX); |
531 |
|
|
} |
532 |
|
|
|
533 |
|
|
/* Determine if we need to update the maximum erase count. */ |
534 |
✓✓ |
1160 |
if (erase_count > nor_flash -> lx_nor_flash_maximum_erase_count) |
535 |
|
|
{ |
536 |
|
|
|
537 |
|
|
/* Yes, a new maximum is present. */ |
538 |
|
150 |
nor_flash -> lx_nor_flash_maximum_erase_count = erase_count; |
539 |
|
|
} |
540 |
|
|
|
541 |
|
|
/* Setup the free bit map that corresponds to the free physical sectors in this |
542 |
|
|
block. Note that we only need to setup the portion of the free bit map that doesn't |
543 |
|
|
have sectors associated with it. */ |
544 |
|
1160 |
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr+(nor_flash -> lx_nor_flash_block_free_bit_map_offset + (nor_flash -> lx_nor_flash_block_bit_map_words - 1)) , |
545 |
|
|
&(nor_flash -> lx_nor_flash_block_bit_map_mask), 1); |
546 |
|
|
|
547 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
548 |
✗✓ |
1160 |
if (status) |
549 |
|
|
{ |
550 |
|
|
|
551 |
|
|
/* Call system error handler. */ |
552 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
553 |
|
|
|
554 |
|
|
/* Return the error. */ |
555 |
|
|
return(status); |
556 |
|
|
} |
557 |
|
|
|
558 |
|
|
/* Write the initial erase count for the block with the upper bit set. */ |
559 |
|
1160 |
temp_erase_count = (erase_count | LX_BLOCK_ERASED); |
560 |
|
1160 |
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &temp_erase_count, 1); |
561 |
|
|
|
562 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
563 |
✗✓ |
1160 |
if (status) |
564 |
|
|
{ |
565 |
|
|
|
566 |
|
|
/* Call system error handler. */ |
567 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
568 |
|
|
|
569 |
|
|
/* Return the error. */ |
570 |
|
|
return(status); |
571 |
|
|
} |
572 |
|
|
|
573 |
|
|
/* Write the final initial erase count for the block. */ |
574 |
|
1160 |
status = _lx_nor_flash_driver_write(nor_flash, block_word_ptr, &erase_count, 1); |
575 |
|
|
|
576 |
|
|
/* Check for an error from flash driver. Drivers should never return an error.. */ |
577 |
✗✓ |
1160 |
if (status) |
578 |
|
|
{ |
579 |
|
|
|
580 |
|
|
/* Call system error handler. */ |
581 |
|
|
_lx_nor_flash_system_error(nor_flash, status); |
582 |
|
|
|
583 |
|
|
/* Return the error. */ |
584 |
|
|
return(status); |
585 |
|
|
} |
586 |
|
|
|
587 |
|
|
/* Update parameters of this flash. */ |
588 |
|
1160 |
nor_flash -> lx_nor_flash_free_physical_sectors = nor_flash -> lx_nor_flash_free_physical_sectors + obsolete_sectors; |
589 |
|
1160 |
nor_flash -> lx_nor_flash_obsolete_physical_sectors = nor_flash -> lx_nor_flash_obsolete_physical_sectors - obsolete_sectors; |
590 |
|
|
#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE |
591 |
|
|
|
592 |
|
|
/* Check if the block is cached by obsolete count cache. */ |
593 |
|
|
if (erase_block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block) |
594 |
|
|
{ |
595 |
|
|
|
596 |
|
|
/* Yes, clear the obsolete count for this block. */ |
597 |
|
|
nor_flash -> lx_nor_flash_extended_cache_obsolete_count[erase_block] = 0; |
598 |
|
|
} |
599 |
|
|
#endif |
600 |
|
|
} |
601 |
|
|
} |
602 |
|
|
|
603 |
|
|
/* Return status. */ |
604 |
|
1160 |
return(LX_SUCCESS); |
605 |
|
|
} |
606 |
|
|
|