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To build Embedian’s 
SMARC-FiMX7 u-boot and linux kernel, you will need to install the following Linaro arm compiler first: 

For u-boot 2018.03 and Linux 4.14.98, you need to use the following newer Linaro arm compilier. 

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$ wget -c http://releases.linaro.org/components/toolchain/binaries/6.4-2017.11/arm-linux-gnueabihf/gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf.tar.xz
$ sudo tar -C /opt -xJf gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf.tar.xz
$ export CC=/opt/gcc-linaro-6.4.1-2017.11-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-


For u-boot 2017.03, Linux 4.9.11 and Linux 4.9.88, you need to use the following newer Linaro arm compilier. 

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Clone the U-Boot source code from Embedian Git Server.

Download:

For u-boot v2018.03: 

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$ git clone git@git.embedian.com:developer/smarc-t335x-uboot.git smarcfimx7-uboot
$ cd smarcfimx7-uboot
$ git checkout smarc-imx7_v2018.03_4.14.98_2.0.0_ga

For u-boot v2017.03: 

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$ git clone git@git.embedian.com:developer/smarc-t335x-uboot.git smarcfimx7-uboot
$ cd smarcfimx7-uboot
$ git checkout smarc-imx7_v2017.03_4.9.11_1.0.0_ga

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titleNote

Note1:

If the board is SMARC-FiMX7-S (Solo Core), use
$ make ARCH=arm CROSS_COMPILE=${CC} smarcfimx7s_ser3_defconfig

If the board is SMARC-FiMX7-D-2G (Dual Core with 2GB DDR3L), use
$ make ARCH=arm CROSS_COMPILE=${CC} smarcfimx7d_2g_ser3_defconfig

Note 2:

"ser3" stands for console debug port. In this example, we uses SER3 as debug port. If user uses SER0 as your debug port, make change to "ser0" instead. Same as SER1 and SER2.

Note 3:

The SMARC-FiMX7 module always boot up from the on-module SPI NOR flash. The factory default will be u-boot.imx pre-installed with SER3 as console output. In some cases when the SPI NOR flash is empty or needs to be upgraded. Users can shunt crossed the TEST# to ground. In this way, the SMARC-FiMX7 module will boot up to carrier SD card, if TEST# pin is shunt crossed. The u-boot.imx image are the same, the difference is how you flash u-boot.imx. This will be explained in the "Setup SD card" section.

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Linux Kernel

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Download:

For 4.14.98 (Based on Freescale imx_4.14.98_2.0.0_ga official release):

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$ git clone git@git.embedian.com:developer/smarc-fsl-linux-kernel.git
$ cd smarc-fsl-linux-kernel
$ git checkout smarc-imx7_4.14.98_2.0.0_ga


For 4.9.88 (Based on Freescale imx_4.9.88_2.0.0_ga official release):

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Copy u-boot.imx to the boot partition. (Note: Rename u-boot-dtb.img to u-boot.img if your u-boot is v2018.03 or v2017.03)

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title~/smarcfimx7-uboot

$ sudo cp -v u-boot.imx /media/boot/u-boot.imx

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titleu-boot command prompt

U-Boot# mmc rescan; mmc dev; load mmc 0:1 0x90800000 u-boot.imx; sf probe; sleep 2; sf erase 0 0xc0000; sf write 0x90800000 0x400 86000c0000

If SPI NOR Flash is empty

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Copy u-boot.imx to the boot partition. (Note: Rename u-boot-dtb.img to u-boot.img if your u-boot is v2018.03 or v2017.03)

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title~/smarcfimx7-uboot

$ sudo dd if=u-boot.imx of=${DISK} bs=512 seek=2 

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title~/smarc-fsl-linux-kernel

$ sudo cp -v arch/arm/boot/zImage /media/boot

Install Kernel Device Tree Binary

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Now it will be almost the same as you did when setup your SD card, but the eMMC device descriptor is /dev/mmcblk2 now.

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$ export DISK=/dev/mmcblk2

Erase SD card:

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$ sudo dd if=/dev/zero of=${DISK} bs=1M count=16

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Unmount eMMC:

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$ sync
$ sudo umount /media/boot
$ sudo umount /media/rootfs

 

Switch your Boot Select to eMMC and you will be able to boot up from eMMC now.


version 1.0a, 3/08/2017

Last updated 20182019-0211-08