/**
* 作用:nandc模块提供对外通过分区名来查找分区表的函数接口
*
* 参数:
* @partition_name ---分区表的名
* 描述:通过分区名返回分区表信息,查找成功返回分区表指针，查找不成功返回NULL
*
*/
struct ST_PART_TBL * find_partition_by_name(const char *partition_name)
{
struct ST_PART_TBL * ptable = NULL;
ptable_ensure();
ptable = ptable_get_ram_data();
/*遍历所有的分区表信息*/
while(0 != strcmp(PTABLE_END_STR, ptable->name))
{
/*查找到就退出*/
if(0 == strcmp(partition_name, ptable->name))
{
break;
}
ptable++;
}
/*如果不为空就表示查找得所要的分区表信息*/
if(0 == strcmp(PTABLE_END_STR, ptable->name))
{
NAND_TRACE(("ERROR: can't find partition %s, function %s\n", partition_name, __FUNCTION__));
return NULL;
}
return ptable;
}
/**
* 作用:擦除所有的yaffs文件系统分区
*
* 参数:
* 无
*
*
* 描述:擦除所有的yaffs文件系统分区,在升级的过程中使用,擦除所有的yaffs文件系统的分区
*/
void bsp_erase_yaffs_partitons(void)
{
struct ST_PART_TBL * ptable = NULL;
struct ptentry ptn;
int ret = NANDC_ERROR;
ptable_ensure();
ptable = ptable_get_ram_data();
/*遍历所有的分区信息*/
while(0 != strcmp(PTABLE_END_STR, ptable->name))
{
/*查找YAFFS文件系统的分区*/
if(ptable->property & DATA_YAFFS)
{
/* coverity[buffer_size_warning] */
strncpy(ptn.name, ptable->name, 16);
ptn.start = ptable->offset;
ptn.length = ptable->capacity;
NAND_TRACE(("earsing %s, start 0x%x, length 0x%x\n", ptn.name, ptn.start, ptn.length));
ret = flash_erase(&ptn);
if(ret)
{
NAND_TRACE(("[%s] ERROR: erase %s failed, ret = %d\n", __FUNCTION__, ptn.name, ret));
return;
}
}
ptable++;
}
}
/**********************************************************************************
* FUNC NAME:
* ptable_parse_mtd_partitions() - external API: get mtd partitions from flash table
*
* PARAMETER:
* @mtd_parts -[output] pointer to mtd partitions
* @nr_parts - [output] number of mtd partitions
*
*
* DESCRIPTION:
* get mtd partitions from flash table
*
* CALL FUNC:
*
*********************************************************************************/
u32 ptable_parse_mtd_partitions(struct mtd_partition** mtd_parts, u32 *nr_parts)
{
struct ST_PART_TBL * ptable = NULL;
struct mtd_partition *parts = NULL;
u32 npart;
u32 last_end = 0;
u32 last_id = 0;
if(!(mtd_parts && nr_parts))
{
goto ERRO;
}
/*ensure that there's a ram table exist*/
/*lint -save -e539*/
ptable_ensure();
/*lint -restore*/
ptable_adapt();
#ifdef __FASTBOOT__
/*show all ptable info*/
#ifndef BSP_CONFIG_EDA
ptable_show(NULL);
#endif
#endif
ptable = ptable_get_ram_data();
/*get number of partitions*/
npart = 0;
while(0 != strcmp(PTABLE_END_STR, ptable->name))
{
if(ptable->capacity) /* skip empty part */
{
npart++;
}
ptable++;
}
/*this memory never free */
parts = himalloc(sizeof(struct mtd_partition) * npart);
if(NULL == parts)
{
hiout(("ptable_to_mtd_partition, error malloc\r\n"));
goto ERRO;
}
memset(parts, 0x00 , (sizeof(struct mtd_partition) * npart));
/*lint -save -e613*/
*mtd_parts = parts;
/*lint -restore*/
*nr_parts = npart;
/*get address again*/
ptable = ptable_get_ram_data();
/*置0以后重新计算实际转移到MTD的分区数*/
npart = 0;
/*form flash table to mtd partitions */
while(0 != strcmp(PTABLE_END_STR, ptable->name))
{
/*not first partition (PTABLE_HEAD_STR)*/
if((last_end != ptable->offset) && (0 != last_id))
{
hiout(("ptable check error! "));
hiout((ptable->name));
hiout(("\r\n"));
goto ERRO;
}
#ifdef __KERNEL__
if(ptable->property & MOUNT_MTD){
#endif
parts->name = ptable->name;
parts->offset = ptable->offset;
parts->size = ptable->capacity;
parts++;
npart++;
#ifdef __KERNEL__
}
#endif
last_end = ptable->offset + ptable->capacity;
last_id = ptable->image;
ptable++;
}
*nr_parts = npart;
return NANDC_OK;
ERRO:
if(NULL != parts)
{
hifree(parts);
}
return NANDC_ERROR;
}
