Hi Varada,
On 6/11/2026 4:59 PM, Varadarajan Narayanan wrote:
On Sat, Jun 06, 2026 at 03:48:35PM +0530, Balaji Selvanathan wrote:
Add a new SPL_UFS_FS Kconfig option to enable filesystem-based boot
from UFS (FAT or EXT4). When selected, a UFS_MODE_FS case is added
to the boot-mode switch in spl_ufs_load() raw mode on failure.
The filesystem path is currently a stub that
returns -ENOSYS, serving as a placeholder for future implementation.
Is this really needed? Can't this be added along with the actual support.
Removed as suggested in v3:
https://lore.kernel.org/u-boot/[email protected]/
Thanks,
Balaji
-Varada
Signed-off-by: Balaji Selvanathan <[email protected]>
---
Changes in v2:
- Added the filesystem support in SPL UFS as a seperate patch
---
---
common/spl/Kconfig | 10 ++++++++++
common/spl/spl_ufs.c | 9 +++++++++
2 files changed, 19 insertions(+)
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 82b757d1efa..8609f08413b 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -1682,6 +1682,16 @@ config SPL_UFS_RAW_U_BOOT_PARTITION_NUM
with partition support. This is used if partition name is not
specified or not found.
+config SPL_UFS_FS
+ bool "Enable UFS filesystem boot mode"
+ depends on SPL_UFS
+ help
+ Enable filesystem-based boot from UFS. This allows loading
+ U-Boot from FAT or EXT4 filesystems on UFS partitions.
+ This is tried as a fallback if raw mode loading fails.
+
+ Note: Filesystem support is not yet fully implemented.
+
config SPL_WATCHDOG
bool "Support watchdog drivers"
imply SPL_WDT if !HW_WATCHDOG
diff --git a/common/spl/spl_ufs.c b/common/spl/spl_ufs.c
index 0590b796267..8a60948a304 100644
--- a/common/spl/spl_ufs.c
+++ b/common/spl/spl_ufs.c
@@ -142,6 +142,15 @@ int spl_ufs_load(struct spl_image_info *spl_image,
return 0;
#endif
break;
+#ifdef CONFIG_SPL_UFS_FS
+ case UFS_MODE_FS:
+ debug("spl: ufs: boot mode: fs\n");
+
+ /* TODO: Implement filesystem support */
+ printf("spl: ufs: filesystem boot not implemented\n");
+ ret = -ENOSYS;
+ break;
+#endif
default:
puts("spl: ufs: wrong boot mode\n");
}
--
2.34.1
