/*****************************************************************************
* name : flash_scan_bad
*
* description : scan bad block, if partition_name is NULL, scan all partitions
*
* input : char *partition_name: partition to scan
*
* other : No
*****************************************************************************/
void flash_scan_bad(char *partition_name)
{
struct ptentry *ptn = NULL;
struct ST_PART_TBL *part = (struct ST_PART_TBL *)SHM_MEM_PTABLE_ADDR;
struct nand_spec spec;
struct ptentry tn;
if(nand_get_spec(&spec))
{
cprintf("ERROR: nand get spec failed!\n");
return;
}
partition_name = bsp_nand_argument_check(partition_name);
/* scan all partitions */
if(!partition_name)
{
part++;
while(0 != strcmp(PTABLE_END_STR, part->name))
{
if(DATA_VALID == ptable_get_validity(part))
{
/* coverity[buffer_size_warning] */
strncpy(tn.name, part->name, 16);
tn.start = part->offset;
tn.length = part->capacity;
/* coverity[uninit_use_in_call] */
get_partition_badblock(&tn, &spec);
}
part++;
}
}
else /* scan one partition */
{
ptn = flash_find_ptn(partition_name);
if(!ptn)
{
cprintf("ERROR: wrong partition name: %s\n", partition_name);
return;
}
/* coverity[uninit_use_in_call] */
get_partition_badblock(ptn, &spec);
}
cprintf("\n\n");
return;
}
/*****************************************************************************
* name : flash_erase_force
*
* description : Erase nand block force, even if it's bad.
*
* input : char *partition_name: partition to be erase
*
* other : No
*****************************************************************************/
void flash_erase_force(char *partition_name)
{
unsigned i = 0;
unsigned ret = ERROR;
unsigned block_start = 0;
unsigned block_end= 0;
struct nand_spec spec;
struct ptentry *ptn = NULL;
ret = nand_get_spec(&spec);
if(ret)
{
cprintf("ERROR: nand get spec failed!\n");
goto EXIT;
}
partition_name = bsp_nand_argument_check(partition_name);
if(NULL == partition_name)
{
cprintf("ERROR: no partition name!\n");
goto EXIT;
}
ptn = flash_find_ptn(partition_name);
if(!ptn)
{
cprintf("ERROR: wrong partition name: %s\n", partition_name);
goto EXIT;
}
/* coverity[uninit_use] */
block_start = (ptn->start + spec.blocksize- 1) / spec.blocksize;
block_end = (ptn->start + ptn->length + spec.blocksize - 1) / spec.blocksize;
for (i = block_start; i < block_end; i++)
{
ret = nand_erase(i);
if(ret)
{
cprintf("ERROR: nand erase error, block id = %d, ret = %d.\n", i, ret);
}
}
cprintf("Erase %s force finished!\n", partition_name);
return;
EXIT:
cprintf("ret = 0x%x!\n", ret);
return;
}
/*****************************************************************************
* name : flash_erase
*
* description : Erase nand block
*
* input : ptentry *ptn: partition to be erase
*
* return : NANDF_OK: erase OK
* NANDF_ERROR_INIT: Init failed
* NANDF_ERROR_ARGS: Input error
* NANDF_BAD_BLOCK: the block to be erase is a bad block
* NANDF_ERROR_ERASE: erase failed, and mark the block as a bad block
* NANDF_ERROR_ERASE_MARKBAD: erase failed, and mark bad block failed
* NANDF_ERROR_SEMTAKE: apply semphore failed
* NANDF_ERROR_SEMGIVE: release semphore failed
*
* other : No
*****************************************************************************/
int flash_erase(ptentry *ptn)
{
int ret = ERROR;
unsigned i = 0;
unsigned block_start = 0;
unsigned block_end= 0;
unsigned bad_flag;
struct nand_spec spec;
ret = nand_get_spec(&spec);
if(ret)
{
cprintf("ERROR: nand get spec failed!\n");
return ERROR;
}
/* coverity[uninit_use] */
block_start = (ptn->start + spec.blocksize- 1) / spec.blocksize;
block_end = (ptn->start + ptn->length + spec.blocksize - 1) / spec.blocksize;
for (i = block_start; i < block_end; i++)
{
ret = (s32)nand_isbad(i, &bad_flag);
if(NANDC_OK != ret || NANDC_BAD_BLOCK == bad_flag)
{
cprintf("block %d is bad, not erase, ret=%x\n", i, ret);
continue;
}
ret = (s32)nand_erase(i);
if(ret)
{
cprintf("erase block %d failed, ret=%x\n", i, ret);
}
}
return OK;
}
/**
* 作用:nandc模块提供对外扫描坏块的函数接口
*
* 参数:
* @start ---flash开始的地址
* @length ---扫描的长度
* @if_erase ---如果检测是好块根据此参数来决定是否擦除此块
* 描述:扫描flash是否是坏块，根据参数来决定是否擦除
*/
u32 nand_scan_bad(FSZ start, FSZ length, u32 if_erase)
{
u32 addr_block_align;
u32 length_block_align;
u32 blk_id, is_bad, times, ret;
struct nand_spec spec;
/*因为是在fastboot中实现，内存的释放是没有实现的，使用静态变量表示一次分配以后都不分配了*/
static u32 block_buf = 0 ;
memset(&spec, 0, sizeof(struct nand_spec));
/*通过此函数得到nandflash的规格参数,知道blocksize的大小*/
if(NAND_OK != nand_get_spec(&spec))
{
NAND_TRACE(("nand_scan_bad: nand_get_spec failed\n"));
return NAND_ERROR;
}
/*扫描块时要块对齐*/
addr_block_align = start - start%(spec.blocksize);
/*得到要扫描的块长度*/
length_block_align = nandc_alige_size(start + length, spec.blocksize) - addr_block_align;
/*如果没有分配内存就分配内存*/
if(!block_buf)
{
block_buf = (u32)himalloc(spec.blocksize);
if(NULL == (void*)block_buf)//pclint 58
{
NAND_TRACE(("nand_scan_bad: himalloc failed\n"));
goto ERRO;
}
}
/*还有块长度需要扫描*/
while(length_block_align > 0)
{
/*得到块号地址*/
blk_id = addr_block_align/spec.blocksize;
if(NAND_OK != nand_isbad(blk_id, &is_bad))
{
NAND_TRACE(("nand_scan_bad: nand_isbad failed\n"));
goto ERRO;
}
if(NANDC_GOOD_BLOCK == is_bad)
{
times = 1;
/*读整块数据如果没有出错的话表示是好坏*/
while((NANDC_E_READ == nand_read((FSZ)addr_block_align, block_buf, spec.blocksize, 0)) && (times))
{
times--;
}
if(0 == times)
{
NAND_TRACE(("nand_scan_bad: find and read error, address:0x%x\n",addr_block_align));
ret = nand_bad(blk_id);
if(ret)
{
NAND_TRACE(("nand_scan_bad:nand check bad failed, ret = 0x%x\n",ret));
}
}
/*是好块如果要擦除的话就擦除*/
else if(NANDC_TRUE == if_erase)
{
ret = nand_erase(blk_id);
if(ret)
{
NAND_TRACE(("nand_scan_bad:nand erase failed, ret = 0x%x\n",ret));
}
}
else
{
}
}
else
{
NAND_TRACE(("nand_scan_bad:find bad block: 0x%x\n",addr_block_align));
}
length_block_align -= spec.blocksize;
addr_block_align += spec.blocksize;
}
return NAND_OK;
ERRO:
return NAND_ERROR;
}