[U-Boot] [PATCH v2 2/6] ARM: UniPhier: add environment variable to update images in NAND

[Masahiro Yamada]

To boot UniPhier boards with the NAND boot mode, two images
(u-boot-spl.bin and u-boot-dtb.img) must be written at the correct
offset addresses.

TFTP downloading is useful to update such images in the NAND device.
We generally do:

  => nand erase 0 0x100000
  => tftpboot u-boot-spl.bin
  => nand write $loadaddr 0 0x10000
  => tftpboot u-boot-dtb.img
  => nand write $loadaddr 0x10000 0xf0000

It is a tedious and error-prone operation.

This commit provides the shorthand:

  => run nandupdate

Signed-off-by: Masahiro Yamada <yamada.m at jp.panasonic.com>
---

Changes in v2:
  - Newly added

 include/configs/uniphier.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h
index 43d2a4c..35bea1a 100644
--- a/include/configs/uniphier.h
+++ b/include/configs/uniphier.h
@@ -235,6 +235,11 @@
 	"image_offset=0x00080000\0"		\
 	"image_size=0x00f00000\0"		\
 	"verify=n\0"				\
+	"nandupdate=nand erase 0 0x100000 &&"				\
+		   "tftpboot u-boot-spl.bin &&"				\
+		   "nand write $loadaddr 0 0x10000 &&"			\
+		   "tftpboot u-boot-dtb.img &&"				\
+		   "nand write $loadaddr 0x10000 0xf0000\0"		\
 	"norboot=run add_default_bootargs &&"				\
 		"bootm $image_offset\0"					\
 	"nandboot=run add_default_bootargs &&"				\
-- 
1.9.1