Merge tag 'u-boot-ufs-20260313' of https://source.denx.de/u-boot/custodians/u-boot-ufs into next

- ufs_hba_ops callbacks cleanup
- Rockchip UFS reset support
- UFS support in SPL

3 files changed, 80 insertions, 0 deletions

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 996c9b8db4f..dafc0cb91bd 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -1613,6 +1613,36 @@ config SPL_THERMAL
 	  automatic power-off when the temperature gets too high or low. Other
 	  devices may be discrete but connected on a suitable bus.
 
+config SPL_UFS_SUPPORT
+	bool "Support loading from UFS"
+	depends on UFS
+	select SPL_LOAD_BLOCK
+	help
+	  Enable support for UFS in SPL. This allows
+	  use of UFS devices such as hard drives and flash drivers for
+	  loading U-Boot.
+
+config SPL_UFS_RAW_U_BOOT_DEVNUM
+	int "SCSI device number of the UFS device to load U-Boot from"
+	depends on SPL_UFS_SUPPORT
+	default 0
+	help
+	  UFS devices are usually configured with multiple LUNs, which present
+	  themselves as sequentially numbered SCSI devices. Usually one would
+	  get a default LUN 0 taking up most of the space on the device, with
+	  a number of smaller LUNs following it. This option controls which of
+	  them the SPL will attempt to load U-Boot from. Note that this is the
+	  SCSI device number, which might differ from the UFS LUN if you have
+	  multiple SCSI devices attached and recognized by the SPL.
+
+config SPL_UFS_RAW_U_BOOT_SECTOR
+	hex "Address on the UFS to load U-Boot from"
+	depends on SPL_UFS_SUPPORT
+	default 0x800 if ARCH_ROCKCHIP
+	help
+	  Address on the block device to load U-Boot from.
+	  Units: UFS sectors (1 sector = 4096 bytes).
+
 config SPL_WATCHDOG
 	bool "Support watchdog drivers"
 	imply SPL_WDT if !HW_WATCHDOG
diff --git a/common/spl/Makefile b/common/spl/Makefile
index 4c9482bd309..e18f3cf0948 100644
--- a/common/spl/Makefile
+++ b/common/spl/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_$(PHASE_)DFU) += spl_dfu.o
 obj-$(CONFIG_$(PHASE_)SPI_LOAD) += spl_spi.o
 obj-$(CONFIG_$(PHASE_)RAM_SUPPORT) += spl_ram.o
 obj-$(CONFIG_$(PHASE_)USB_SDP_SUPPORT) += spl_sdp.o
+obj-$(CONFIG_$(PHASE_)UFS_SUPPORT) += spl_ufs.o
 endif
 
 obj-$(CONFIG_$(PHASE_)UPL) += spl_upl.o
diff --git a/common/spl/spl_ufs.c b/common/spl/spl_ufs.c
new file mode 100644
index 00000000000..cef1843f40f
--- /dev/null
+++ b/common/spl/spl_ufs.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2025 Alexey Charkov <[email protected]>
+ */
+
+#include <spl.h>
+#include <spl_load.h>
+#include <scsi.h>
+#include <errno.h>
+#include <image.h>
+#include <linux/compiler.h>
+#include <log.h>
+
+static ulong spl_ufs_load_read(struct spl_load_info *load, ulong off, ulong size, void *buf)
+{
+	struct blk_desc *bd = load->priv;
+	lbaint_t sector = off >> bd->log2blksz;
+	lbaint_t count = size >> bd->log2blksz;
+
+	return blk_dread(bd, sector, count, buf) << bd->log2blksz;
+}
+
+static int spl_ufs_load_image(struct spl_image_info *spl_image,
+			      struct spl_boot_device *bootdev)
+{
+	unsigned long sector = CONFIG_SPL_UFS_RAW_U_BOOT_SECTOR;
+	int devnum = CONFIG_SPL_UFS_RAW_U_BOOT_DEVNUM;
+	struct spl_load_info load;
+	struct blk_desc *bd;
+	int err;
+
+	/* try to recognize storage devices immediately */
+	scsi_scan(false);
+	bd = blk_get_devnum_by_uclass_id(UCLASS_SCSI, devnum);
+	if (!bd)
+		return -ENODEV;
+
+	spl_load_init(&load, spl_ufs_load_read, bd, bd->blksz);
+	err = spl_load(spl_image, bootdev, &load, 0, sector << bd->log2blksz);
+	if (err) {
+		puts("spl_ufs_load_image: ufs block read error\n");
+		log_debug("(error=%d)\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+SPL_LOAD_IMAGE_METHOD("UFS", 0, BOOT_DEVICE_UFS, spl_ufs_load_image);