Merge branch '2022-09-16-rationalize-the-block-interface' into next

The block interface has two separate implementations, one using driver
model and one not. The latter is really only needed for SPL, where
size constraints allegedly don't allow use of driver model. Of course
we still need space for filesystems and other code, so it isn't clear
that driver model is anything more than the straw that breaks the
camel's back.

The driver model version uses a uclass ID for the interface time, but
converts back and forth between that and if_type, which is the legacy
type.

The HAVE_BLOCK_DEVICE define is mostly a hangover from the old days.
At present its main purpose is to enable the legacy block implementation
in SPL.

Finally the use of 'select' to enable BLK does not work very well. It
causes kconfig errors when another option depends on BLK and it is
not recommended by the kconfig style guide.

This series aims to clean things up:
- Enable BLK based on whether different media types are used, but still
  allow boards to disable it
- Rename HAVE_BLOCK_DEVICE to indicates its real purpose
- Drop if_type and use the uclass instead
- Drop some obsolete if_type values

An issue not resolved by this series is that the sandbox host interface
does not actually have a device. At present it uses the root device, which
was convenience for the driver model conversion but not really correct. It
should be possible to clean this up, in a future series.

Another minor issue is the use of UCLASS_USB for a mass-storage device.
This has been the case for a while and is not addresed by this series,
other than to add a comment.

Note that this test relies on Tom Rini's series to drop various boards
including warp and cm_t335

Finally, a patch is included to make binman put fake files in a
subdirectory, since repeated runs of certain boards can cause unrelated
failues (e.g. chromebook_coral) when fake files are left around.

4 files changed, 5 insertions, 6 deletions

diff --git a/lib/efi_driver/efi_block_device.c b/lib/efi_driver/efi_block_device.c
index d57d281f850..3177ab67b81 100644
--- a/lib/efi_driver/efi_block_device.c
+++ b/lib/efi_driver/efi_block_device.c
@@ -128,7 +128,7 @@ static int efi_bl_bind(efi_handle_t handle, void *interface)
 	if (!obj)
 		return -ENOENT;
 
-	devnum = blk_find_max_devnum(IF_TYPE_EFI_LOADER);
+	devnum = blk_find_max_devnum(UCLASS_EFI_LOADER);
 	if (devnum == -ENODEV)
 		devnum = 0;
 	else if (devnum < 0)
@@ -140,7 +140,7 @@ static int efi_bl_bind(efi_handle_t handle, void *interface)
 	sprintf(name, "efiblk#%d", devnum);
 
 	/* Create driver model udevice for the EFI block io device */
-	ret = blk_create_device(parent, "efi_blk", name, IF_TYPE_EFI_LOADER,
+	ret = blk_create_device(parent, "efi_blk", name, UCLASS_EFI_LOADER,
 				devnum, io->media->block_size,
 				(lbaint_t)io->media->last_block, &bdev);
 	if (ret)
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 5cfff8c56bc..476a22d7ea3 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -20,7 +20,6 @@ config EFI_LOADER
 	select EVENT_DYNAMIC
 	select LIB_UUID
 	imply PARTITION_UUIDS
-	select HAVE_BLOCK_DEVICE
 	select REGEX
 	imply FAT
 	imply FAT_WRITE
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index a34ca46a11e..819dcb4f131 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -640,7 +640,7 @@ static int efi_disk_probe(void *ctx, struct event *event)
 	 * has already created an efi_disk at this moment.
 	 */
 	desc = dev_get_uclass_plat(dev);
-	if (desc->if_type != IF_TYPE_EFI_LOADER) {
+	if (desc->if_type != UCLASS_EFI_LOADER) {
 		ret = efi_disk_create_raw(dev);
 		if (ret)
 			return -1;
@@ -675,7 +675,7 @@ static int efi_disk_delete_raw(struct udevice *dev)
 		return -1;
 
 	desc = dev_get_uclass_plat(dev);
-	if (desc->if_type != IF_TYPE_EFI_LOADER) {
+	if (desc->if_type != UCLASS_EFI_LOADER) {
 		diskobj = container_of(handle, struct efi_disk_obj, header);
 		efi_free_pool(diskobj->dp);
 	}
diff --git a/lib/efi_loader/efi_var_file.c b/lib/efi_loader/efi_var_file.c
index 76a2ff9e412..994e66392fb 100644
--- a/lib/efi_loader/efi_var_file.c
+++ b/lib/efi_loader/efi_var_file.c
@@ -38,7 +38,7 @@ static efi_status_t __maybe_unused efi_set_blk_dev_to_system_partition(void)
 	char part_str[PART_STR_LEN];
 	int r;
 
-	if (!efi_system_partition.if_type) {
+	if (efi_system_partition.if_type == UCLASS_INVALID) {
 		log_err("No EFI system partition\n");
 		return EFI_DEVICE_ERROR;
 	}