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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.
41 #include "flash_lpc2.h"
42 #include "cfg/cfg_emb_flash.h"
44 // Define log settings for cfg/log.h
45 #define LOG_LEVEL CONFIG_FLASH_EMB_LOG_LEVEL
46 #define LOG_FORMAT CONFIG_FLASH_EMB_LOG_FORMAT
48 #include <cfg/macros.h>
52 #include <cpu/power.h>
53 #include <cpu/types.h>
55 #include <io/kblock.h>
58 #include <drv/timer.h>
59 #include <drv/flash.h>
82 typedef void (*iap_callback_t)(IapCmd *, IapRes *);
84 iap_callback_t iap = (iap_callback_t)IAP_ADDRESS;
86 static size_t sector_size(uint32_t page)
99 static size_t sector_addr(uint32_t page)
104 return (page - 8) * 32768 + 4096 * 8;
106 return (page - 22) * 4096 + 32768 * 14 + 4096 * 8;
113 static uint32_t addr_to_sector(size_t addr)
117 else if (addr < 4096 * 8 + 32768L * 14)
118 return ((addr - 4096 * 8) / 32768) + 8;
119 else if (addr < 4096 * 8 + 32768L * 14 + 4096 * 6)
120 return ((addr - 4096 * 8 - 32768L * 14) / 4096) + 22;
126 static uint32_t addr_to_pageaddr(size_t addr)
130 else if (addr < 4096 * 8 + 32768L * 14)
131 return (addr - 4096 * 8) % 32768;
132 else if (addr < 4096 * 8 + 32768L * 14 + 4096 * 6)
133 return (addr - 4096 * 8 - 32768L * 14) % 4096;
139 static size_t lpc2_flash_readDirect(struct KBlock *blk, block_idx_t idx, void *buf, size_t offset, size_t size)
142 ASSERT(size == blk->blk_size);
144 ASSERT(sector_size(idx) <= FLASH_PAGE_SIZE_BYTES);
146 memcpy(buf, (void *)(idx * blk->blk_size), size);
150 static size_t lpc2_flash_writeDirect(struct KBlock *blk, block_idx_t idx, const void *_buf, size_t offset, size_t size)
153 ASSERT(size == blk->blk_size);
154 ASSERT(sector_size(idx) <= FLASH_PAGE_SIZE_BYTES);
156 Flash *fls = FLASH_CAST(blk);
157 const uint8_t *buf = (const uint8_t *)_buf;
160 //Compute page address of current page.
161 uint32_t addr = sector_addr(idx);
163 LOG_INFO("Writing page %ld...\n", idx);
165 IRQ_SAVE_DISABLE(flags);
169 cmd.cmd = PREPARE_SECTOR_FOR_WRITE;
170 cmd.param[0] = cmd.param[1] = idx;
172 if (res.status != CMD_SUCCESS)
174 LOG_ERR("%ld\n", res.status);
175 fls->hw->status |= FLASH_WR_ERR;
179 cmd.cmd = ERASE_SECTOR;
180 cmd.param[0] = cmd.param[1] = idx;
181 cmd.param[2] = CPU_FREQ / 1000;
183 if (res.status != CMD_SUCCESS)
185 LOG_ERR("%ld\n", res.status);
186 fls->hw->status |= FLASH_WR_ERR;
192 LOG_INFO("Writing page %ld, addr %ld, size %d\n", idx, addr, size);
193 cmd.cmd = PREPARE_SECTOR_FOR_WRITE;
194 cmd.param[0] = cmd.param[1] = idx;
196 if (res.status != CMD_SUCCESS)
198 LOG_ERR("%ld\n", res.status);
199 fls->hw->status |= FLASH_WR_ERR;
203 cmd.cmd = COPY_RAM_TO_FLASH;
205 cmd.param[1] = (uint32_t)buf;
207 cmd.param[3] = CPU_FREQ / 1000;
209 if (res.status != CMD_SUCCESS)
211 LOG_ERR("%ld\n", res.status);
212 fls->hw->status |= FLASH_WR_ERR;
218 buf += 4096 / sizeof(uint32_t);
224 return blk->blk_size;
227 static int lpc2_flash_error(struct KBlock *blk)
229 Flash *fls = FLASH_CAST(blk);
230 return fls->hw->status;
233 static void lpc2_flash_clearerror(struct KBlock *blk)
235 Flash *fls = FLASH_CAST(blk);
239 static const KBlockVTable flash_lpc2_buffered_vt =
241 .readDirect = lpc2_flash_readDirect,
242 .writeDirect = lpc2_flash_writeDirect,
244 .readBuf = kblock_swReadBuf,
245 .writeBuf = kblock_swWriteBuf,
246 .load = kblock_swLoad,
247 .store = kblock_swStore,
249 .close = kblock_swClose,
251 .error = lpc2_flash_error,
252 .clearerr = lpc2_flash_clearerror,
255 static const KBlockVTable flash_lpc2_unbuffered_vt =
257 .readDirect = lpc2_flash_readDirect,
258 .writeDirect = lpc2_flash_writeDirect,
260 .close = kblock_swClose,
262 .error = lpc2_flash_error,
263 .clearerr = lpc2_flash_clearerror,
266 static struct FlashHardware flash_lpc2_hw;
267 static uint8_t flash_buf[FLASH_PAGE_SIZE_BYTES];
269 static void common_init(Flash *fls)
271 memset(fls, 0, sizeof(*fls));
272 DB(fls->blk.priv.type = KBT_FLASH);
274 fls->hw = &flash_lpc2_hw;
276 fls->blk.blk_size = FLASH_PAGE_SIZE_BYTES;
277 fls->blk.blk_cnt = 28;
280 void flash_hw_init(Flash *fls)
283 fls->blk.priv.vt = &flash_lpc2_buffered_vt;
284 fls->blk.priv.flags |= KB_BUFFERED | KB_PARTIAL_WRITE;
285 fls->blk.priv.buf = flash_buf;
287 /* Load the first block in the cache */
288 void *flash_start = 0x0;
289 memcpy(fls->blk.priv.buf, flash_start, fls->blk.blk_size);
291 kprintf("page[%d]\n", sector_addr(22));
294 void flash_hw_initUnbuffered(Flash *fls)
297 fls->blk.priv.vt = &flash_lpc2_unbuffered_vt;