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efi_loader: search all possible disk partitions

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When searching for partitions don't stop if a partition is not present
for a given partition number as there may be valid partitions after.

Search for up to MAX_SEARCH_PARTITIONS matching the other callers of
part_get_info().

This allows OpenBSD to boot via the efi_loader on rpi_3 again after
changes made after U-Boot 2017.09.  With MBR partitioning OpenBSD will
by default use the fourth partition for the 0xA6 (OpenBSD) partition.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Jonathan Gray 2017-10-10 13:55:26 +11:00 • committed by Alexander Graf
parent fdd04563ce
commit 16a73b249d
1 changed files with 12 additions and 8 deletions
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20
lib/efi_loader/efi_disk.c
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@ -254,18 +254,19 @@ static int efi_disk_create_eltorito(struct blk_desc *desc,
#if CONFIG_IS_ENABLED(ISO_PARTITION)
char devname[32] = { 0 }; /* dp->str is u16[32] long */
disk_partition_t info;
int part = 1;
int part;
if (desc->part_type != PART_TYPE_ISO)
return 0;
/* and devices for each partition: */
while (!part_get_info(desc, part, &info)) {
for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
if (part_get_info(desc, part, &info))
continue;
snprintf(devname, sizeof(devname), "%s:%d", pdevname,
part);
efi_disk_add_dev(devname, if_typename, desc, diskid,
info.start, part);
part++;
disks++;
}
@ -299,15 +300,16 @@ int efi_disk_register(void)
struct blk_desc *desc = dev_get_uclass_platdata(dev);
const char *if_typename = dev->driver->name;
disk_partition_t info;
int part = 1;
int part;
printf("Scanning disk %s...\n", dev->name);
/* add devices for each partition: */
while (!part_get_info(desc, part, &info)) {
for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
if (part_get_info(desc, part, &info))
continue;
efi_disk_add_dev(dev->name, if_typename, desc,
desc->devnum, 0, part);
part++;
}
/* ... and add block device: */
@ -341,7 +343,7 @@ int efi_disk_register(void)
struct blk_desc *desc;
char devname[32] = { 0 }; /* dp->str is u16[32] long */
disk_partition_t info;
int part = 1;
int part;
desc = blk_get_devnum_by_type(if_type, i);
if (!desc)
@ -353,7 +355,9 @@ int efi_disk_register(void)
if_typename, i);
/* add devices for each partition: */
while (!part_get_info(desc, part, &info)) {
for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
if (part_get_info(desc, part, &info))
continue;
efi_disk_add_dev(devname, if_typename, desc,
i, 0, part);
part++;