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29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \author Francesco Sacchi <batt@develer.com>
34 * \author Daniele Basile <asterix@develer.com>
36 * \brief NPX lpc23xx embedded flash read/write driver.
39 #include "flash_lpc2.h"
40 #include "cfg/cfg_emb_flash.h"
42 // Define log settings for cfg/log.h
43 #define LOG_LEVEL CONFIG_FLASH_EMB_LOG_LEVEL
44 #define LOG_FORMAT CONFIG_FLASH_EMB_LOG_FORMAT
46 #include <cfg/macros.h>
50 #include <cpu/power.h>
51 #include <cpu/types.h>
53 #include <io/kblock.h>
56 #include <drv/timer.h>
57 #include <drv/flash.h>
80 typedef void (*iap_callback_t)(IapCmd *, IapRes *);
82 iap_callback_t iap = (iap_callback_t)IAP_ADDRESS;
84 static size_t sector_size(uint32_t page)
97 static size_t sector_addr(uint32_t page)
102 return (page - 8) * 32768 + 4096 * 8;
104 return (page - 22) * 4096 + 32768 * 14 + 4096 * 8;
111 static uint32_t addr_to_sector(size_t addr)
115 else if (addr < 4096 * 8 + 32768L * 14)
116 return ((addr - 4096 * 8) / 32768) + 8;
117 else if (addr < 4096 * 8 + 32768L * 14 + 4096 * 6)
118 return ((addr - 4096 * 8 - 32768L * 14) / 4096) + 22;
124 static uint32_t addr_to_pageaddr(size_t addr)
128 else if (addr < 4096 * 8 + 32768L * 14)
129 return (addr - 4096 * 8) % 32768;
130 else if (addr < 4096 * 8 + 32768L * 14 + 4096 * 6)
131 return (addr - 4096 * 8 - 32768L * 14) % 4096;
137 static size_t lpc2_flash_readDirect(struct KBlock *blk, block_idx_t idx, void *buf, size_t offset, size_t size)
140 ASSERT(size == blk->blk_size);
142 ASSERT(sector_size(idx) <= FLASH_PAGE_SIZE_BYTES);
144 memcpy(buf, (void *)(idx * blk->blk_size), size);
148 static size_t lpc2_flash_writeDirect(struct KBlock *blk, block_idx_t idx, const void *_buf, size_t offset, size_t size)
151 ASSERT(size == blk->blk_size);
152 ASSERT(sector_size(idx) <= FLASH_PAGE_SIZE_BYTES);
154 Flash *fls = FLASH_CAST(blk);
155 const uint8_t *buf = (const uint8_t *)_buf;
158 //Compute page address of current page.
159 uint32_t addr = sector_addr(idx);
161 LOG_INFO("Writing page %ld...\n", idx);
163 IRQ_SAVE_DISABLE(flags);
167 cmd.cmd = PREPARE_SECTOR_FOR_WRITE;
168 cmd.param[0] = cmd.param[1] = idx;
170 if (res.status != CMD_SUCCESS)
172 LOG_ERR("%ld\n", res.status);
173 fls->hw->status |= FLASH_WR_ERR;
177 cmd.cmd = ERASE_SECTOR;
178 cmd.param[0] = cmd.param[1] = idx;
179 cmd.param[2] = CPU_FREQ / 1000;
181 if (res.status != CMD_SUCCESS)
183 LOG_ERR("%ld\n", res.status);
184 fls->hw->status |= FLASH_WR_ERR;
190 LOG_INFO("Writing page %ld, addr %ld, size %d\n", idx, addr, size);
191 cmd.cmd = PREPARE_SECTOR_FOR_WRITE;
192 cmd.param[0] = cmd.param[1] = idx;
194 if (res.status != CMD_SUCCESS)
196 LOG_ERR("%ld\n", res.status);
197 fls->hw->status |= FLASH_WR_ERR;
201 cmd.cmd = COPY_RAM_TO_FLASH;
203 cmd.param[1] = (uint32_t)buf;
205 cmd.param[3] = CPU_FREQ / 1000;
207 if (res.status != CMD_SUCCESS)
209 LOG_ERR("%ld\n", res.status);
210 fls->hw->status |= FLASH_WR_ERR;
216 buf += 4096 / sizeof(uint32_t);
222 return blk->blk_size;
225 static int lpc2_flash_error(struct KBlock *blk)
227 Flash *fls = FLASH_CAST(blk);
228 return fls->hw->status;
231 static void lpc2_flash_clearerror(struct KBlock *blk)
233 Flash *fls = FLASH_CAST(blk);
237 static const KBlockVTable flash_lpc2_buffered_vt =
239 .readDirect = lpc2_flash_readDirect,
240 .writeDirect = lpc2_flash_writeDirect,
242 .readBuf = kblock_swReadBuf,
243 .writeBuf = kblock_swWriteBuf,
244 .load = kblock_swLoad,
245 .store = kblock_swStore,
247 .close = kblock_swClose,
249 .error = lpc2_flash_error,
250 .clearerr = lpc2_flash_clearerror,
253 static const KBlockVTable flash_lpc2_unbuffered_vt =
255 .readDirect = lpc2_flash_readDirect,
256 .writeDirect = lpc2_flash_writeDirect,
258 .close = kblock_swClose,
260 .error = lpc2_flash_error,
261 .clearerr = lpc2_flash_clearerror,
264 static struct FlashHardware flash_lpc2_hw;
265 static uint8_t flash_buf[FLASH_PAGE_SIZE_BYTES];
267 static void common_init(Flash *fls)
269 memset(fls, 0, sizeof(*fls));
270 DB(fls->blk.priv.type = KBT_FLASH);
272 fls->hw = &flash_lpc2_hw;
274 fls->blk.blk_size = FLASH_PAGE_SIZE_BYTES;
275 fls->blk.blk_cnt = 28;
278 void flash_hw_init(Flash *fls)
281 fls->blk.priv.vt = &flash_lpc2_buffered_vt;
282 fls->blk.priv.flags |= KB_BUFFERED | KB_PARTIAL_WRITE;
283 fls->blk.priv.buf = flash_buf;
285 /* Load the first block in the cache */
286 void *flash_start = 0x0;
287 memcpy(fls->blk.priv.buf, flash_start, fls->blk.blk_size);
289 kprintf("page[%d]\n", sector_addr(22));
292 void flash_hw_initUnbuffered(Flash *fls)
295 fls->blk.priv.vt = &flash_lpc2_unbuffered_vt;