Also, create disk objects for the disk itself, in addition to the partitions. (UEFI terminology is a bit confusing, a "disk" object is really a partition.) This helps grub properly identify the boot device since it is trying to match up partition "disk" object with it's parent device.
Now instead of seeing devices like:
/File(sdhci@07864000.blk)/EndEntire /File(usb_mass_storage.lun0)/EndEntire
You see:
/ACPI(133741d0,0)/UnknownMessaging(1d)/EndEntire /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(0,800,64000,dd904a8c00000000,1,1)/EndEntire /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(1,64800,200000,dd904a8c00000000,1,1)/EndEntire /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(2,264800,19a000,dd904a8c00000000,1,1)/EndEntire /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/EndEntire /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(0,800,60000,38ca680200000000,1,1)/EndEntire /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(1,61000,155000,38ca680200000000,1,1)/EndEntire /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(2,20fa800,1bbf8800,38ca680200000000,1,1)/EndEntire /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(3,1b6800,1f44000,38ca680200000000,1,1)/EndEntire
This is on a board with single USB disk and single sd-card. The UnknownMessaging(1d) node in the device-path is the MMC device, but grub_efi_print_device_path() hasn't been updated yet for some of the newer device-path sub-types.
This patch is inspired by a patch originally from Peter Jones, but re-worked to use efi_device_path, so it doesn't much resemble the original.
Signed-off-by: Rob Clark robdclark@gmail.com --- lib/efi_loader/efi_disk.c | 52 +++++++++++++++++++++++++++-------------------- 1 file changed, 30 insertions(+), 22 deletions(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index ed06485e33..efa70fc460 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -28,11 +28,13 @@ struct efi_disk_obj { /* EFI Interface Media descriptor struct, referenced by ops */ struct efi_block_io_media media; /* EFI device path to this block device */ - struct efi_device_path_file_path *dp; + struct efi_device_path *dp; + /* partition # */ + unsigned part; /* Offset into disk for simple partitions */ lbaint_t offset; /* Internal block device */ - const struct blk_desc *desc; + struct blk_desc *desc; };
static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this, @@ -172,26 +174,26 @@ static const struct efi_block_io block_io_disk_template = {
static void efi_disk_add_dev(const char *name, const char *if_typename, - const struct blk_desc *desc, + struct blk_desc *desc, int dev_index, - lbaint_t offset) + lbaint_t offset, + unsigned part) { struct efi_disk_obj *diskobj; - struct efi_device_path_file_path *dp; - int objlen = sizeof(*diskobj) + (sizeof(*dp) * 2);
/* Don't add empty devices */ if (!desc->lba) return;
- diskobj = calloc(1, objlen); + diskobj = calloc(1, sizeof(*diskobj));
/* Fill in object data */ - dp = (void *)&diskobj[1]; + diskobj->dp = efi_dp_from_part(desc, part); + diskobj->part = part; diskobj->parent.protocols[0].guid = &efi_block_io_guid; diskobj->parent.protocols[0].protocol_interface = &diskobj->ops; diskobj->parent.protocols[1].guid = &efi_guid_device_path; - diskobj->parent.protocols[1].protocol_interface = dp; + diskobj->parent.protocols[1].protocol_interface = diskobj->dp; diskobj->parent.handle = diskobj; diskobj->ops = block_io_disk_template; diskobj->ifname = if_typename; @@ -207,17 +209,6 @@ static void efi_disk_add_dev(const char *name, diskobj->media.last_block = desc->lba - offset; diskobj->ops.media = &diskobj->media;
- /* Fill in device path */ - diskobj->dp = dp; - dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE; - dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH; - dp[0].dp.length = sizeof(*dp); - ascii2unicode(dp[0].str, name); - - dp[1].dp.type = DEVICE_PATH_TYPE_END; - dp[1].dp.sub_type = DEVICE_PATH_SUB_TYPE_END; - dp[1].dp.length = sizeof(*dp); - /* Hook up to the device list */ list_add_tail(&diskobj->parent.link, &efi_obj_list); } @@ -236,14 +227,18 @@ static int efi_disk_create_eltorito(struct blk_desc *desc, if (desc->part_type != PART_TYPE_ISO) return 0;
+ /* and devices for each partition: */ while (!part_get_info(desc, part, &info)) { snprintf(devname, sizeof(devname), "%s:%d", pdevname, part); efi_disk_add_dev(devname, if_typename, desc, diskid, - info.start); + info.start, part); part++; disks++; } + + /* ... and add block device: */ + efi_disk_add_dev(devname, if_typename, desc, diskid, 0, 0); #endif
return disks; @@ -271,9 +266,22 @@ int efi_disk_register(void) uclass_next_device_check(&dev)) { struct blk_desc *desc = dev_get_uclass_platdata(dev); const char *if_typename = dev->driver->name; + disk_partition_t info; + int part = 1;
printf("Scanning disk %s...\n", dev->name); - efi_disk_add_dev(dev->name, if_typename, desc, desc->devnum, 0); + + /* add devices for each partition: */ + while (!part_get_info(desc, part, &info)) { + efi_disk_add_dev(dev->name, if_typename, desc, + desc->devnum, 0, part); + part++; + } + + /* ... and add block device: */ + efi_disk_add_dev(dev->name, if_typename, desc, + desc->devnum, 0, 0); + disks++;
/*