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efi_loader: disk: Fix CONFIG_BLK breakage 

When using CONFIG_BLK, there were 2 issues:

  1) The name we generate the device with has to match the
     name we set in efi_set_bootdev()

  2) The device we pass into our block functions was wrong,
     we should not rediscover it but just use the already known
     pointer.

This patch fixes both issues.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2016-08-05 14:49:53 +02:00 committed by Tom Rini
parent 45313e83b8
commit f9d334bdfc
2 changed files with 29 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
cmd/bootefi.c
View File

@ -8,6 +8,7 @@
#include <common.h>
#include <command.h>
#include <dm/device.h>
#include <efi_loader.h>
#include <errno.h>
#include <libfdt.h>
@ -265,18 +266,30 @@ void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
char devname[32] = { 0 }; /* dp->str is u16[32] long */
char *colon;
/* Assemble the condensed device name we use in efi_disk.c */
snprintf(devname, sizeof(devname), "%s%s", dev, devnr);
#if defined(CONFIG_BLK) || defined(CONFIG_ISO_PARTITION)
desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
#endif
#ifdef CONFIG_BLK
if (desc) {
snprintf(devname, sizeof(devname), "%s", desc->bdev->name);
} else
#endif
{
/* Assemble the condensed device name we use in efi_disk.c */
snprintf(devname, sizeof(devname), "%s%s", dev, devnr);
}
colon = strchr(devname, ':');
#ifdef CONFIG_ISO_PARTITION
/* For ISOs we create partition block devices */
desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
if (desc && (desc->type != DEV_TYPE_UNKNOWN) &&
(desc->part_type == PART_TYPE_ISO)) {
if (!colon)
snprintf(devname, sizeof(devname), "%s%s:1", dev,
devnr);
snprintf(devname, sizeof(devname), "%s:1", devname);
colon = NULL;
}
#endif

18
lib/efi_loader/efi_disk.c
View File

@ -31,6 +31,8 @@ struct efi_disk_obj {
struct efi_device_path_file_path *dp;
/* Offset into disk for simple partitions */
lbaint_t offset;
/* Internal block device */
const struct blk_desc *desc;
};
static efi_status_t efi_disk_open_block(void *handle, efi_guid_t *protocol,
@ -78,8 +80,7 @@ static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
unsigned long n;
diskobj = container_of(this, struct efi_disk_obj, ops);
if (!(desc = blk_get_dev(diskobj->ifname, diskobj->dev_index)))
return EFI_EXIT(EFI_DEVICE_ERROR);
desc = (struct blk_desc *) diskobj->desc;
blksz = desc->blksz;
blocks = buffer_size / blksz;
lba += diskobj->offset;
@ -213,6 +214,7 @@ static void efi_disk_add_dev(const char *name,
diskobj->ifname = if_typename;
diskobj->dev_index = dev_index;
diskobj->offset = offset;
diskobj->desc = desc;
/* Fill in EFI IO Media info (for read/write callbacks) */
diskobj->media.removable_media = desc->removable;
@ -240,7 +242,8 @@ static void efi_disk_add_dev(const char *name,
static int efi_disk_create_eltorito(struct blk_desc *desc,
const char *if_typename,
int diskid)
int diskid,
const char *pdevname)
{
int disks = 0;
#ifdef CONFIG_ISO_PARTITION
@ -252,8 +255,8 @@ static int efi_disk_create_eltorito(struct blk_desc *desc,
return 0;
while (!part_get_info(desc, part, &info)) {
snprintf(devname, sizeof(devname), "%s%d:%d", if_typename,
diskid, part);
snprintf(devname, sizeof(devname), "%s:%d", pdevname,
part);
efi_disk_add_dev(devname, if_typename, desc, diskid,
info.start);
part++;
@ -296,7 +299,7 @@ int efi_disk_register(void)
* so let's create them here
*/
disks += efi_disk_create_eltorito(desc, if_typename,
desc->devnum);
desc->devnum, dev->name);
}
#else
int i, if_type;
@ -331,7 +334,8 @@ int efi_disk_register(void)
* El Torito images show up as block devices
* in an EFI world, so let's create them here
*/
disks += efi_disk_create_eltorito(desc, if_typename, i);
disks += efi_disk_create_eltorito(desc, if_typename,
i, devname);
}
}
#endif