Changes between Version 18 and Version 19 of OpenWrt/building

Timestamp:

05/21/2019 11:50:27 PM (6 years ago)

Author:

Tim Harvey

Comment:

added example of creating a disk image for MMC

OpenWrt/building

@@ -213 +213 @@
 Creating JTAG Binaries to flash with the GW16042 is easily done with the targets in the makefile within the gateworks directory:
 {{{#!bash
-# Make a 'jtagable' images for Ventana
+# Make a 'jtagable' images for Ventana NAND FLASH
 make -C gateworks/ images/ventana
 
-# Make a 'jtagable' image for Laguna
+# Make a 'jtagable' image for Laguna NOR FLASH
 make -C gateworks/ images/laguna
 
@@ -222 +222 @@
 make -C gateworks/ images
 }}}
-
-The resulting flash firmware image will be {{{gateworks/images/}}}.
+ * The resulting flash firmware image will be {{{gateworks/images/}}}.
+
+If you wish to create an MMC 'disk image' for Ventana boards that boot from eMMC:
+{{{#!bash
+# create an ext4 filesystem image (using mkfs from Newport BSP)
+OUT=owrt.ext4
+SIZEMB=256M # adjust this larger if bootfs.tar.gz and rootfs.tar.gz don't fit
+wget https://raw.githubusercontent.com/Gateworks/bsp-newport/master/mkfs
+chmod +x mkfs
+sudo mkfs ext4 $OUT $SIZEMB bin/imx6/gateworks-imx6-ventana-bootfs.tar.gz bin/imx6/gateworks-imx6-ventana-rootfs.tar.gz
+
+# create a filesystem image
+OUTFS=owrt.ext4
+SIZEMB=256M
+MNT=$(mktemp -d -p/tmp)
+truncate -s $SIZEMB $OUTFS
+sudo mkfs.ext4 -q -F -O ^64bit -L rootfs $OUTFS
+sudo mount $OUTFS $MNT
+sudo tar -C $MNT -xf bin/imx6/gateworks-imx6-ventana-bootfs.tar.gz
+sudo tar -C $MNT -xf bin/imx6/gateworks-imx6-ventana-rootfs.tar.gz
+sudo umount $MNT
+
+# create a disk image
+OUTIMG=ventana_emmc.img
+truncate -s 1M $OUTIMG
+# partition disk - single ext partition
+printf ",,L,,\n" | sudo sfdisk -uS $OUTIMG
+sudo dd if=ventana/images/SPL of=$OUTIMG bs=512 seek=2
+sudo dd if=ventana/images/u-boot.img of=$OUTIMG bs=512 seek=138
+sudo dd if=$OUTFS of=$OUTIMG bs=1M seek=1
+
+# create a jtag binary image
+mkimage_jtag --emmc -e --partconf=user $OUTIMG@user:erase_all:0x0- > $OUTIMG.bin
+
+# create a compressed disk image that can be installed via U-Boot's gzwrite
+gzip -f -k $OUTIMG && ls -lh $OUTIMG*
+}}}
+ * ventana_emmc.img is a non-compressed disk image containing SPL, U-Boot and the ext4 partition which can be copied directly to a microSD or eMMC
+ * ventana_emmc.bin is a JTAG'able binary image containing SPL, U-Boot and the ext4 partition
+ * ventana_emmc.img.gz is a compressed disk image which can be updated via U-Boot for example with a 'gzwrite mmc $dev $loadaddr $filesize'
 
 To flash the file to the board, please see this link: [wiki:jtag_instructions#Instructions JTAG Programming Instructions]