2016-02-06 03:30:11 +00:00
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How to use U-Boot on Freescale MX6UL 14x14 EVK
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2015-09-08 17:43:12 +00:00
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2016-02-06 03:30:11 +00:00
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- Build U-Boot for MX6UL 14x14 EVK:
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2015-09-08 17:43:12 +00:00
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$ make mrproper
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$ make mx6ul_14x14_evk_defconfig
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$ make
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This will generate the SPL image called SPL and the u-boot.img.
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2019-07-18 20:44:31 +00:00
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1. Booting via SDCard
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2015-09-08 17:43:12 +00:00
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- Flash the SPL image into the micro SD card:
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sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
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- Flash the u-boot.img image into the micro SD card:
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sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync
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- Jumper settings:
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SW601: 0 0 1 0
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Sw602: 1 0
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where 0 means bottom position and 1 means top position (from the
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switch label numbers reference).
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- Connect the USB cable between the EVK and the PC for the console.
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(The USB console connector is the one close the push buttons)
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2016-02-06 03:30:11 +00:00
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- Insert the micro SD card in the board, power it up and U-Boot messages should
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2015-09-08 17:43:12 +00:00
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come up.
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2019-07-18 20:44:31 +00:00
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2. Booting via Serial Download Protocol (SDP)
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---------------------------------------------
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The mx6ulevk board can boot from USB OTG port using the SDP, target will
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enter in SDP mode in case an SD Card is not connect or boot switches are
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set as below:
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Sw602: 0 1
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SW601: x x x x
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The following tools can be used to boot via SDP, for both tools you must
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connect an USB cable in USB OTG port.
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- Method 1: Universal Update Utility (uuu)
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The UUU binary can be downloaded in release tab from link below:
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https://github.com/NXPmicro/mfgtools
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The following script should be created to boot SPL + u-boot-dtb.img binaries:
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$ cat uuu_script
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uuu_version 1.1.4
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SDP: boot -f SPL
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SDPU: write -f u-boot-dtb.img -addr 0x877fffc0
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SDPU: jump -addr 0x877fffc0
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SDPU: done
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Please note that the address above is calculated based on SYS_TEXT_BASE address:
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0x877fffc0 = 0x87800000 (SYS_TEXT_BASE) - 0x40 (U-Boot proper Header size)
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Power on the target and run the following command from U-Boot root directory:
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$ sudo ./uuu uuu_script
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- Method 2: imx usb loader tool (imx_usb):
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The imx_usb_loader tool can be downloaded in link below:
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https://github.com/boundarydevices/imx_usb_loader
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Build the source code and run the following commands from U-Boot root
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directory:
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$ sudo ./imx_usb SPL
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$ sudo ./imx_usb u-boot-dtb.img
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