From 13b6770c0513eb80596c862b0c513101b5449934 Mon Sep 17 00:00:00 2001
From: Faiz Abbas <faiz_abbas@ti.com>
Date: Tue, 15 Oct 2019 18:24:41 +0530
Subject: env: ti: Add environment variables to boot from UFS

Add environment variables to boot kernel from a filesystem contained in
the 2nd UFS LUN. The user can boot from a ufs filesystem just by
entering the following commands.

=> setenv boot ufs
=> boot

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
---
 include/environment/ti/ufs.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 include/environment/ti/ufs.h

(limited to 'include/environment')

diff --git a/include/environment/ti/ufs.h b/include/environment/ti/ufs.h
new file mode 100644
index 0000000..d457e20
--- /dev/null
+++ b/include/environment/ti/ufs.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Environment variable definitions for UFS on TI boards.
+ */
+
+#ifndef __TI_UFS_H
+#define __TI_UFS_H
+
+#define DEFAULT_UFS_TI_ARGS \
+	"scsirootfstype=ext4 rootwait\0" \
+	"ufs_finduuid=part uuid scsi ${bootpart} uuid\0" \
+	"args_ufs=setenv devtype scsi;setenv bootpart 1:1;" \
+	"run ufs_finduuid;setenv bootargs console = ${console} " \
+		"${optargs}" \
+		"root=PARTUUID=${uuid} rw " \
+		"rootfstype=${scsirootfstype};" \
+		"setenv devtype scsi;" \
+		"setenv bootpart 1:1\0" \
+	"init_ufs=ufs init; scsi scan; run args_ufs\0" \
+	"get_kern_ufs=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${name_kern}\0" \
+	"get_fdt_ufs=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"get_overlay_ufs=" \
+		"fdt address ${fdtaddr};" \
+		"fdt resize 0x100000;" \
+		"for overlay in $name_overlays;" \
+		"do;" \
+		"load scsi ${bootpart} ${overlayaddr} ${bootdir}/${overlay} && " \
+		"fdt apply ${overlayaddr};" \
+		"done;\0"
+
+#endif
-- 
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