s32 __WBFS_ReadUSB(void *fp, u32 lba, u32 count, void *iobuf)
{
u32 cnt = 0;
s32 ret;
/* Do reads */
while (cnt < count) {
void *ptr = ((u8 *)iobuf) + (cnt * sector_size);
u32 sectors = (count - cnt);
/* Read sectors is too big */
if (sectors > MAX_NB_SECTORS)
sectors = MAX_NB_SECTORS;
/* USB read */
ret = USBStorage_ReadSectors(lba + cnt, sectors, ptr);
if (ret < 0)
return ret;
/* Increment counter */
cnt += sectors;
}
return 0;
}
s32 Partition_GetEntries(u32 device, partitionEntry *outbuf, u32 *outval)
{
static partitionTable table ATTRIBUTE_ALIGN(32);
u32 cnt, sector_size;
s32 ret;
/* Read from specified device */
switch (device) {
case WBFS_DEVICE_USB: {
/* Get sector size */
ret = USBStorage_GetCapacity(§or_size);
if (ret == 0)
return -1;
/* Read partition table */
u8* table_buf = memalign(32, sector_size);
ret = USBStorage_ReadSectors(0, 1, table_buf);
memcpy(&table, table_buf, sizeof(table));
SAFE_FREE(table_buf);
if (ret < 0)
return ret;
break;
}
case WBFS_DEVICE_SDHC: {
/* SDHC sector size */
sector_size = SDHC_SECTOR_SIZE;
/* Read partition table */
ret = SDHC_ReadSectors(0, 1, &table);
if (!ret)
return -1;
break;
}
default:
return -1;
}
/* Swap endianess */
for (cnt = 0; cnt < 4; cnt++) {
partitionEntry *entry = &table.entries[cnt];
entry->sector = swap32(entry->sector);
entry->size = swap32(entry->size);
}
/* Set partition entries */
memcpy(outbuf, table.entries, sizeof(table.entries));
/* Set sector size */
*outval = sector_size;
return 0;
}
bool Device_ReadSectors(u32 device, u32 sector, u32 count, void *buffer)
{
s32 ret;
/* Read from specified device */
switch (device) {
case WBFS_DEVICE_USB:
ret = USBStorage_ReadSectors(sector, count, buffer);
if (ret < 0)
return false;
return true;
case WBFS_DEVICE_SDHC:
return SDHC_ReadSectors(sector, count, buffer);
}
return false;
}
