[PATCH v2 1/4] apalis-tk1: add update_uboot wrapper

[Igor Opaniuk <igor.opaniuk@gmail.com>]

From: Igor Opaniuk <igor.opaniuk@toradex.com>

Add universal update_uboot wrapper that helps to update
U-Boot image on internal storage.

Create an proper tegra image:
$ cbootimage -s tegra124 apalis-tk1.img.cfg apalis-tk1.img

Flash in U-boot shell:
> tftpboot ${loadaddr} ${board_name}/${board_name}.img
> run update_uboot

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
---

 include/configs/apalis-tk1.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/configs/apalis-tk1.h b/include/configs/apalis-tk1.h
index 4127f2d6c6..8ca571b9b7 100644
--- a/include/configs/apalis-tk1.h
+++ b/include/configs/apalis-tk1.h
@@ -46,6 +46,14 @@
 				"zImage fat 0 1 mmcpart 0; " \
 				"tegra124-apalis-eval.dtb fat 0 1 mmcpart 0"
 
+#define UBOOT_UPDATE \
+	"uboot_hwpart=1\0" \
+	"uboot_blk=0\0" \
+	"set_blkcnt=setexpr blkcnt ${filesize} + 0x1ff && " \
+		"setexpr blkcnt ${blkcnt} / 0x200\0" \
+	"update_uboot=run set_blkcnt && mmc dev 0 ${uboot_hwpart} && " \
+		"mmc write ${loadaddr} ${uboot_blk} ${blkcnt}\0" \
+
 #define EMMC_BOOTCMD \
 	"set_emmcargs=setenv emmcargs ip=off root=PARTUUID=${uuid} " \
 		"ro rootfstype=ext4 rootwait\0" \
@@ -104,6 +112,7 @@
 	"fdt_module=" FDT_MODULE "\0" \
 	NFS_BOOTCMD \
 	SD_BOOTCMD \
+	UBOOT_UPDATE \
 	"setethupdate=if env exists ethaddr; then; else setenv ethaddr " \
 		"00:14:2d:00:00:00; fi; pci enum && tftpboot ${loadaddr} " \
 		"flash_eth.img && source ${loadaddr}\0" \
-- 
2.17.1