static int CheckInit(yaffs_Device *dev)
{
static int initialised = 0;
int i;
int fail = 0;
int nAllocated = 0;
if(initialised)
{
return YAFFS_OK;
}
initialised = 1;
ramdisk.nBlocks = (SIZE_IN_MB * 1024 * 1024)/(16 * 1024);
ramdisk.block = YMALLOC(sizeof(yflash_Block *) * ramdisk.nBlocks);
if(!ramdisk.block) return 0;
for(i=0; i <ramdisk.nBlocks; i++)
{
ramdisk.block[i] = NULL;
}
for(i=0; i <ramdisk.nBlocks && !fail; i++)
{
if((ramdisk.block[i] = YMALLOC(sizeof(yflash_Block))) == 0)
{
fail = 1;
}
else
{
yflash_EraseBlockInNAND(dev,i);
nAllocated++;
}
}
if(fail)
{
for(i = 0; i < nAllocated; i++)
{
YFREE(ramdisk.block[i]);
}
YFREE(ramdisk.block);
T(YAFFS_TRACE_ALWAYS,("Allocation failed, could only allocate %dMB of %dMB requested.\n",
nAllocated/64,ramdisk.nBlocks * YAFFS_BYTES_PER_BLOCK));
return 0;
}
return 1;
}
/*
purpose: format the disk partition.
const char *disk: the partition name
char force: 0 - dont format the bad block.
1 - force format the bad block.
*/
void yaffs_format_partition(const char *disk, char force)
{
int i;
if(strcmp(disk, "/mnt")==0)
{
printf("yaffs formatting partition(/mnt) %d ... \n",force);
for(i=flashDev0.startBlock; i<=flashDev0.endBlock; i++)
{
if(!force)
{
if(nand_flash_query_block(i)!=0xFF)
continue;
}
yflash_EraseBlockInNAND(&flashDev0, i);
}
}
if(strcmp(disk, "/flash")==0)
{
printf("yaffs formatting partition(/flash) %d ... \n",force);
for(i=flashDev1.startBlock; i<=flashDev1.endBlock; i++)
{
if(!force)
{
if(nand_flash_query_block(i)!=0xFF)
continue;
}
yflash_EraseBlockInNAND(&flashDev1, i);
}
}
printf("yaffs finished format partition!\n");
return;
}