/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
/* First set up for M18 with 1k chunks and 16-byte spares.
*
- * NB We're using the oddball M18 modes of operation here
+ * NB We're using the oddball M18 modes of operation here
* The chip is 64MB based at 0x0000, but YAFFS only going to use the top half
* ie. YAFFS will be from 32MB to 64MB.
*
- * The M18 has two ways of writing data. Every Programming Region (1kbytes)
+ * The M18 has two ways of writing data. Every Programming Region (1kbytes)
* can be programmed in two modes:
* * Object Mode 1024 bytes of write once data.
- * * Control Mode: 512bytes of bit-writeable data.
+ * * Control Mode: 512bytes of bit-writeable data.
* This is arranged as 32 * (16 bytes of bit-writable followed by 16 bytes of "dont touch")
- *
+ *
* The block size is 256kB, making 128 blocks in the 32MB YAFFS area.
* Each block comprises:
* Offset 0k: 248 x 1k data pages
* Offset 248k: 248 x 32-byte spare areas implemented as 16 bytes of spare followed by 16 bytes untouched)
* Offset 248k + (248 * 32): Format marker
- *
+ *
*/
const char *yaffs_norif1_c_version = "$Id: yaffs_norif1.c,v 1.6 2010-02-18 01:18:04 charles Exp $";
#include "yaffs_flashif.h"
#include "yaffs_guts.h"
-#include "devextras.h"
-
#define SPARE_BYTES_PER_CHUNK 16
#define M18_SKIP 16
#define PROG_REGION_SIZE 1024
#include "ynorsim.h"
#define ynorif1_FlashInit() ynorsim_initialise()
#define ynorif1_FlashDeinit() ynorsim_shutdown()
-#define ynorif1_FlashWrite32(addr,buf,nwords) ynorsim_wr32(addr,buf,nwords)
-#define ynorif1_FlashRead32(addr,buf,nwords) ynorsim_rd32(addr,buf,nwords)
+#define ynorif1_FlashWrite32(addr,buf,nwords) ynorsim_wr32(addr,buf,nwords)
+#define ynorif1_FlashRead32(addr,buf,nwords) ynorsim_rd32(addr,buf,nwords)
#define ynorif1_FlashEraseBlock(addr) ynorsim_erase(addr)
#define DEVICE_BASE ynorsim_get_base()
#else
#include "../blob/yflashrw.h"
#define ynorif1_FlashInit() do{} while(0)
#define ynorif1_FlashDeinit() do {} while(0)
-#define ynorif1_FlashWrite32(addr,buf,nwords) Y_FlashWrite(addr,buf,nwords)
-#define ynorif1_FlashRead32(addr,buf,nwords) Y_FlashRead(addr,buf,nwords)
+#define ynorif1_FlashWrite32(addr,buf,nwords) Y_FlashWrite(addr,buf,nwords)
+#define ynorif1_FlashRead32(addr,buf,nwords) Y_FlashRead(addr,buf,nwords)
#define ynorif1_FlashEraseBlock(addr) Y_FlashErase(addr,BLOCK_SIZE_IN_BYTES)
#define DEVICE_BASE (32 * 1024 * 1024)
#endif
-__u32 *Block2Addr(yaffs_Device *dev, int blockNumber)
+static u32 *Block2Addr(struct yaffs_dev *dev, int blockNumber)
{
- __u32 addr;
+ u32 addr;
dev=dev;
-
- addr = (__u32) DEVICE_BASE;
+
+ addr = (u32) DEVICE_BASE;
addr += blockNumber * BLOCK_SIZE_IN_BYTES;
-
- return (__u32 *) addr;
+
+ return (u32 *) addr;
}
-__u32 *Block2FormatAddr(yaffs_Device *dev,int blockNumber)
+static u32 *Block2FormatAddr(struct yaffs_dev *dev,int blockNumber)
{
- __u32 addr;
+ u32 addr;
- addr = (__u32) Block2Addr(dev,blockNumber);
+ addr = (u32) Block2Addr(dev,blockNumber);
addr += FORMAT_OFFSET;
-
- return (__u32 *)addr;
+
+ return (u32 *)addr;
}
-__u32 *Chunk2DataAddr(yaffs_Device *dev,int chunkId)
+
+static u32 *Chunk2DataAddr(struct yaffs_dev *dev,int chunk_id)
{
unsigned block;
unsigned chunkInBlock;
- __u32 addr;
-
- block = chunkId/dev->param.nChunksPerBlock;
- chunkInBlock = chunkId % dev->param.nChunksPerBlock;
-
- addr = (__u32) Block2Addr(dev,block);
+ u32 addr;
+
+ block = chunk_id/dev->param.chunks_per_block;
+ chunkInBlock = chunk_id % dev->param.chunks_per_block;
+
+ addr = (u32) Block2Addr(dev,block);
addr += chunkInBlock * DATA_BYTES_PER_CHUNK;
-
- return (__u32 *)addr;
+
+ return (u32 *)addr;
}
-__u32 *Chunk2SpareAddr(yaffs_Device *dev,int chunkId)
+static u32 *Chunk2SpareAddr(struct yaffs_dev *dev,int chunk_id)
{
unsigned block;
unsigned chunkInBlock;
- __u32 addr;
-
- block = chunkId/dev->param.nChunksPerBlock;
- chunkInBlock = chunkId % dev->param.nChunksPerBlock;
-
- addr = (__u32) Block2Addr(dev,block);
+ u32 addr;
+
+ block = chunk_id/dev->param.chunks_per_block;
+ chunkInBlock = chunk_id % dev->param.chunks_per_block;
+
+ addr = (u32) Block2Addr(dev,block);
addr += SPARE_AREA_OFFSET;
addr += chunkInBlock * (SPARE_BYTES_PER_CHUNK + M18_SKIP);
- return (__u32 *)addr;
+ return (u32 *)addr;
}
-void ynorif1_AndBytes(__u8*target, const __u8 *src, int nbytes)
+static void ynorif1_AndBytes(u8*target, const u8 *src, int nbytes)
{
while(nbytes > 0){
*target &= *src;
nbytes--;
}
}
-
-int ynorif1_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare)
+ int (*drv_write_chunk_fn) (struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len);
+static int ynorif1_WriteChunkToNAND(struct yaffs_dev *dev,int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len)
{
- __u32 *dataAddr = Chunk2DataAddr(dev,chunkInNAND);
- __u32 *spareAddr = Chunk2SpareAddr(dev,chunkInNAND);
-
- yaffs_Spare tmpSpare;
-
+ u32 *dataAddr = Chunk2DataAddr(dev,nand_chunk);
+ u32 *spareAddr = Chunk2SpareAddr(dev,nand_chunk);
+
+ struct yaffs_spare *spare = (struct yaffs_spare *)oob;
+ struct yaffs_spare tmpSpare;
+
+ (void) oob_len;
+
/* We should only be getting called for one of 3 reasons:
* Writing a chunk: data and spare will not be NULL
* Writing a deletion marker: data will be NULL, spare not NULL
* Writing a bad block marker: data will be NULL, spare not NULL
*/
-
- if(sizeof(yaffs_Spare) != 16)
- YBUG();
-
- if(data && spare)
+
+ if(sizeof(struct yaffs_spare) != 16)
+ BUG();
+
+ if(data && oob)
{
- if(spare->pageStatus != 0xff)
- YBUG();
+ if(spare->page_status != 0xff)
+ BUG();
/* Write a pre-marker */
memset(&tmpSpare,0xff,sizeof(tmpSpare));
- tmpSpare.pageStatus = YNOR_PREMARKER;
- ynorif1_FlashWrite32(spareAddr,(__u32 *)&tmpSpare,sizeof(yaffs_Spare)/4);
-
- /* Write the data */
- ynorif1_FlashWrite32(dataAddr,(__u32 *)data,dev->param.totalBytesPerChunk / 4);
-
-
- memcpy(&tmpSpare,spare,sizeof(yaffs_Spare));
-
+ tmpSpare.page_status = YNOR_PREMARKER;
+ ynorif1_FlashWrite32(spareAddr,(u32 *)&tmpSpare,sizeof(struct yaffs_spare)/4);
+
+ /* Write the data */
+ ynorif1_FlashWrite32(dataAddr,(u32 *)data, data_len/ 4);
+
+
+ memcpy(&tmpSpare,spare,sizeof(struct yaffs_spare));
+
/* Write the real tags, but override the premarker*/
- tmpSpare.pageStatus = YNOR_PREMARKER;
- ynorif1_FlashWrite32(spareAddr,(__u32 *)&tmpSpare,sizeof(yaffs_Spare)/4);
-
+ tmpSpare.page_status = YNOR_PREMARKER;
+ ynorif1_FlashWrite32(spareAddr,(u32 *)&tmpSpare,sizeof(struct yaffs_spare)/4);
+
/* Write a post-marker */
- tmpSpare.pageStatus = YNOR_POSTMARKER;
- ynorif1_FlashWrite32(spareAddr,(__u32 *)&tmpSpare,sizeof(tmpSpare)/4);
+ tmpSpare.page_status = YNOR_POSTMARKER;
+ ynorif1_FlashWrite32(spareAddr,(u32 *)&tmpSpare,sizeof(tmpSpare)/4);
} else if(spare){
/* This has to be a read-modify-write operation to handle NOR-ness */
- ynorif1_FlashRead32(spareAddr,(__u32 *)&tmpSpare,16/ 4);
-
- ynorif1_AndBytes((__u8 *)&tmpSpare,(__u8 *)spare,sizeof(yaffs_Spare));
-
- ynorif1_FlashWrite32(spareAddr,(__u32 *)&tmpSpare,16/ 4);
+ ynorif1_FlashRead32(spareAddr,(u32 *)&tmpSpare,16/ 4);
+
+ ynorif1_AndBytes((u8 *)&tmpSpare,(u8 *)spare,sizeof(struct yaffs_spare));
+
+ ynorif1_FlashWrite32(spareAddr,(u32 *)&tmpSpare,16/ 4);
}
else {
- YBUG();
+ BUG();
}
-
- return YAFFS_OK;
+
+ return YAFFS_OK;
}
-int ynorif1_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare)
+static int ynorif1_ReadChunkFromNAND(struct yaffs_dev *dev,int nand_chunk,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ enum yaffs_ecc_result *ecc_result)
{
+ struct yaffs_spare *spare = (struct yaffs_spare *)oob;
+
+ u32 *dataAddr = Chunk2DataAddr(dev,nand_chunk);
+ u32 *spareAddr = Chunk2SpareAddr(dev,nand_chunk);
- __u32 *dataAddr = Chunk2DataAddr(dev,chunkInNAND);
- __u32 *spareAddr = Chunk2SpareAddr(dev,chunkInNAND);
-
if(data)
{
- ynorif1_FlashRead32(dataAddr,(__u32 *)data,dev->param.totalBytesPerChunk / 4);
+ ynorif1_FlashRead32(dataAddr,(u32 *)data,dev->param.total_bytes_per_chunk / 4);
}
-
- if(spare)
+
+ if(oob)
{
- ynorif1_FlashRead32(spareAddr,(__u32 *)spare,16/ 4);
-
+ ynorif1_FlashRead32(spareAddr,(u32 *)spare, oob_len/ 4);
+
/* If the page status is YNOR_POSTMARKER then it was written properly
* so change that to 0xFF so that the rest of yaffs is happy.
*/
- if(spare->pageStatus == YNOR_POSTMARKER)
- spare->pageStatus = 0xFF;
- else if(spare->pageStatus != 0xff &&
- (spare->pageStatus | YNOR_PREMARKER) != 0xff)
- spare->pageStatus = YNOR_PREMARKER;
+ if(spare->page_status == YNOR_POSTMARKER)
+ spare->page_status = 0xFF;
+ else if(spare->page_status != 0xff &&
+ (spare->page_status | YNOR_PREMARKER) != 0xff)
+ spare->page_status = YNOR_PREMARKER;
}
-
- return YAFFS_OK;
+ if(ecc_result)
+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+
+ return YAFFS_OK;
}
-static int ynorif1_FormatBlock(yaffs_Device *dev, int blockNumber)
+
+static int ynorif1_FormatBlock(struct yaffs_dev *dev, int blockNumber)
{
- __u32 *blockAddr = Block2Addr(dev,blockNumber);
- __u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
- __u32 formatValue = FORMAT_VALUE;
-
+ u32 *blockAddr = Block2Addr(dev,blockNumber);
+ u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
+ u32 formatValue = FORMAT_VALUE;
+
ynorif1_FlashEraseBlock(blockAddr);
ynorif1_FlashWrite32(formatAddr,&formatValue,1);
-
+
return YAFFS_OK;
}
-static int ynorif1_UnformatBlock(yaffs_Device *dev, int blockNumber)
+static int ynorif1_UnformatBlock(struct yaffs_dev *dev, int blockNumber)
{
- __u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
- __u32 formatValue = 0;
-
+ u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
+ u32 formatValue = 0;
+
ynorif1_FlashWrite32(formatAddr,&formatValue,1);
-
+
return YAFFS_OK;
}
-static int ynorif1_IsBlockFormatted(yaffs_Device *dev, int blockNumber)
+static int ynorif1_IsBlockFormatted(struct yaffs_dev *dev, int blockNumber)
{
- __u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
- __u32 formatValue;
-
-
+ u32 *formatAddr = Block2FormatAddr(dev,blockNumber);
+ u32 formatValue;
+
+
ynorif1_FlashRead32(formatAddr,&formatValue,1);
-
+
return (formatValue == FORMAT_VALUE);
}
-int ynorif1_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
+static int ynorif1_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber)
{
if(blockNumber < 0 || blockNumber >= BLOCKS_IN_DEVICE)
{
- T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Attempt to erase non-existant block %d\n",
+ blockNumber);
return YAFFS_FAIL;
}
else
ynorif1_FormatBlock(dev,blockNumber);
return YAFFS_OK;
}
-
+
}
-int ynorif1_InitialiseNAND(yaffs_Device *dev)
+static int ynorif1_InitialiseNAND(struct yaffs_dev *dev)
{
int i;
-
+
ynorif1_FlashInit();
/* Go through the blocks formatting them if they are not formatted */
- for(i = dev->param.startBlock; i <= dev->param.endBlock; i++){
+ for(i = dev->param.start_block; i <= dev->param.end_block; i++){
if(!ynorif1_IsBlockFormatted(dev,i)){
ynorif1_FormatBlock(dev,i);
}
return YAFFS_OK;
}
-int ynorif1_DeinitialiseNAND(yaffs_Device *dev)
+static int ynorif1_Deinitialise_flash_fn(struct yaffs_dev *dev)
{
- dev=dev;
+ dev=dev;
ynorif1_FlashDeinit();
return YAFFS_OK;
}
+void ynorif1_install_drv(struct yaffs_dev *dev)
+{
+ struct yaffs_param *param = &dev->param;
+
+ param->total_bytes_per_chunk = 1024;
+ param->chunks_per_block =248;
+ param->n_reserved_blocks = 2;
+ param->start_block = 0; // Can use block 0
+ param->end_block = 31; // Last block
+ param->use_nand_ecc = 0; // use YAFFS's ECC
+ param->drv_write_chunk_fn = ynorif1_WriteChunkToNAND;
+ param->drv_read_chunk_fn = ynorif1_ReadChunkFromNAND;
+ param->drv_erase_fn = ynorif1_EraseBlockInNAND;
+ param->drv_initialise_fn = ynorif1_InitialiseNAND;
+ param->drv_deinitialise_fn = ynorif1_Deinitialise_flash_fn;
+}
projects / yaffs2.git / blobdiff