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disk: part: scan the disk if the part_type is unknow 

We can get the new part table when we write a new partition table to
a blank disk with this patch, or else we have to reset the board
to get new partition table.

Change-Id: If6688149a4a3ae9d6f5731757a1b5831494a9152
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Kever Yang 2017-12-14 14:24:31 +08:00
parent 1a3726ad91
commit 067b22ddca
1 changed files with 18 additions and 6 deletions
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24
disk/part.c
View File

@ -24,16 +24,28 @@
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
#ifdef HAVE_BLOCK_DEVICE #ifdef HAVE_BLOCK_DEVICE
static struct part_driver *part_driver_lookup_type(int part_type) static struct part_driver *part_driver_lookup_type(struct blk_desc *dev_desc)
{ {
struct part_driver *drv = struct part_driver *drv =
ll_entry_start(struct part_driver, part_driver); ll_entry_start(struct part_driver, part_driver);
const int n_ents = ll_entry_count(struct part_driver, part_driver); const int n_ents = ll_entry_count(struct part_driver, part_driver);
struct part_driver *entry; struct part_driver *entry;
for (entry = drv; entry != drv + n_ents; entry++) { if (dev_desc->part_type == PART_TYPE_UNKNOWN) {
if (part_type == entry->part_type) for (entry = drv; entry != drv + n_ents; entry++) {
return entry; int ret;
ret = entry->test(dev_desc);
if (!ret) {
dev_desc->part_type = entry->part_type;
return entry;
}
}
} else {
for (entry = drv; entry != drv + n_ents; entry++) {
if (dev_desc->part_type == entry->part_type)
return entry;
}
} }
/* Not found */ /* Not found */
@ -286,7 +298,7 @@ void part_print(struct blk_desc *dev_desc)
{ {
struct part_driver *drv; struct part_driver *drv;
drv = part_driver_lookup_type(dev_desc->part_type); drv = part_driver_lookup_type(dev_desc);
if (!drv) { if (!drv) {
printf("## Unknown partition table type %x\n", printf("## Unknown partition table type %x\n",
dev_desc->part_type); dev_desc->part_type);
@ -315,7 +327,7 @@ int part_get_info(struct blk_desc *dev_desc, int part,
info->type_guid[0] = 0; info->type_guid[0] = 0;
#endif #endif
drv = part_driver_lookup_type(dev_desc->part_type); drv = part_driver_lookup_type(dev_desc);
if (!drv) { if (!drv) {
debug("## Unknown partition table type %x\n", debug("## Unknown partition table type %x\n",
dev_desc->part_type); dev_desc->part_type);