8513ffee43
Use the common board/freescale/common/post-image.sh script instead of a custom one. As the final image binary is called "sdcard.img" update the documentation accordingly. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
105 lines
2.5 KiB
Plaintext
105 lines
2.5 KiB
Plaintext
*****************
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Warp i.MX7S board
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*****************
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This file documents the Buildroot support for the Warp i.MX7S board.
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Build
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=====
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First, configure Buildroot for the Warp i.MX7S board:
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make warp7_defconfig
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Build all components:
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make
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You will find in output/images/ the following files:
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- imx7s-warp.dtb
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- rootfs.ext4
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- rootfs.tar
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- sdcard.img
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- u-boot.imx
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- zImage
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Flash the eMMC image
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====================
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In the U-Boot prompt lauch:
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=> ums 0 mmc 0
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This will mount the eMMC content in the host PC as a mass storage device.
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To determine the device associated to the eMMC have a look in the
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/proc/partitions file:
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cat /proc/partitions
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Buildroot prepares a bootable "sdcard.img" image in the output/images/
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directory, ready to be dumped into the eMMC. Launch the following
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command:
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sudo dd if=output/images/sdcard.img of=/dev/<your-emmc-device>
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*** WARNING! This will destroy all the eMMC content. Use it with care! ***
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For details about the medium image layout, see the definition in
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board/warp7/genimage.cfg.
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How to recover from a bad eMMC image
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====================================
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In case a bad U-Boot has been flashed to the eMMC and the board no
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longer boots, it is possible to recover using the imx_usb_loader utility.
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Put the warp7 board in USB download mode by removing the CPU board
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from the base board then putting switch 2 in the upper position.
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Connect a USB to serial adapter between the host PC and warp7 serial
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USB port, and also a USB cable between the OTG warp7 port and the host
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PC.
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Copy u-boot.imx to the imx_usb_loader folder.
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Load u-boot.imx via USB:
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$ sudo ./imx_usb u-boot.imx
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Then U-Boot should start and its messages will appear in the console program.
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Open a terminal program such as minicom.
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Use the default environment variables:
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=> env default -f -a
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=> saveenv
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=> ums 0 mmc 0
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sudo dd if=output/images/sdcard.img of=/dev/<your-emmc-device>
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Put warp7 back in eMMC boot mode by placing switch 2 in the lower position
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and reboot the board.
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Boot the Warp i.MX7S board
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==========================
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To boot your newly created system:
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- put a micro USB cable into the Debug USB Port and connect using a terminal
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emulator at 115200 bps, 8n1;
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- power on the board.
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Using Wifi
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==========
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# modprobe brcmfmac
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# iwconfig wlan0 essid ACCESSPOINTNAME
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# wpa_passphrase ACCESSPOINTNAME > /etc/wpa.conf
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(enter the wifi password and press enter)
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# wpa_supplicant -Dwext -iwlan0 -c /etc/wpa.conf &
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# udhcpc -i wlan0
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# ping buildroot.org
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Enjoy!
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