[PATCH v3] config: Add 'update_bootimg' command to update flash.bin on Phytec's imx8mm

[Lukasz Majewski]

This command allows easy update on SD card or eMMC of the flash.bin
generated (with binman) during u-boot build.

Signed-off-by: Lukasz Majewski <lukma at denx.de>
---
Changes for v2:
- Remove 'update_mmc_part' variable
- Change path for hostname
- Use full version of dhcp command (${loadaddr} added)

Changes for v3:
- Remove +1 when calculating the size of binary to be written
---
 include/configs/phycore_imx8mm.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/configs/phycore_imx8mm.h b/include/configs/phycore_imx8mm.h
index ce6dc87c69..361e665676 100644
--- a/include/configs/phycore_imx8mm.h
+++ b/include/configs/phycore_imx8mm.h
@@ -29,6 +29,16 @@
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
 	"mmcpart=1\0" \
 	"mmcroot=2\0" \
+	"update_offset=0x42\0" \
+	"update_filename=flash.bin\0" \
+	"hostname=/srv/tftp/\0" \
+	"update_bootimg="						\
+		"mmc dev ${mmcdev} ; "		\
+		"if dhcp ${loadaddr} ${hostname}/${update_filename} ; then "	\
+		"setexpr fw_sz ${filesize} / 0x200 ; "	/* SD block size */ \
+		"setexpr fw_sz ${fw_sz} ; "				\
+		"mmc write ${loadaddr} ${update_offset} ${fw_sz} ; "	\
+		"fi\0" \
 	"mmcautodetect=yes\0" \
 	"mmcargs=setenv bootargs console=${console} " \
 		"root=/dev/mmcblk${mmcdev}p${mmcroot} rootwait rw\0" \
-- 
2.39.2