MYiR MYC-C8MMQ6-8E2D-160-I, Руководство по разработке на Linux

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6.2 SD Card Update
The sdcard image file needs special tool to write Micro SD storage card.The linux user can directly use dd command.The
windows user need "Win32ImageWriter" tool.
MYD-C8MMX series boards provide two sdcard file.It's path in directory 02-Images.
Build updatable SD Card system image
If you modify the Linux kernel, U-Boot or Yocto, then you need a tool for update those files into the board. The MYD-C8MMX
board support a tool MYD-C8MMX-mkupdate-sdcard that builds updatable SD Card image.It locates in '03-Tools' directory.
The build-sdcard.sh script used to generate a system image that contains update system and update target files. The firmware
directory used for the system of the update.Generally, you do not modify it otherwise your NAND flash or other BSP code
changed.
The "mfgimages-*" directory store need update files.Those name of files are defined in 'Manifest' file, please follow below rules:
ubootfile="imx-boot-myd-imx8mm-sd.bin-flash_ddr4_evk"
kernelfile="Image"
dtbfile="myb-fsl-imx8mm-lcdif.dtb"
rootfsfile="fsl-image-qt5-validation-imx-myd-imx8mm-20191018120710.rootfs.ext4"
$ sudo ./build-sdcard.sh
$ ls
boot.img build-sdcard.sh firmware mfg-images MYD-C8MM-Update-System.rootfs.sdcard.img.gz readme.md
MYD-C8MM-Update-System.rootfs.sdcard.img.gz is generated file.
After builds complete, a sdcard.img.gz suffix file in current directory, 'MYD-C8MM-Update-System.rootfs.sdcard.img.gz'.
Making updatable Micro SD
Insert Micro SD card to Card Reader, and plug into PC USB port.MYD-C8MMX resource package support some prebuilt
sdcard.gz files.You can use the tool to write it into your SD card.Those files locate in 02-Images direcory of resource package.
Attention: The date tag of file name is always changed, please follow the actual in 02-Images directory.
Windows system
Windows users can use the Win32DiskImager tool to write sdcard images to Micro SD. In the "03-Tools" directory, unzip
and double-click the "Win32DskImager.exe" application. In the interface after startup, The "Device" on the right side selects
the device letter to be written. The "Image File" on the left is to select the image file to be written. Click the folder icon next
to it and select the file to be written, as shown below:
6.2 SD Card Method
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