68 lines
1.8 KiB
Plaintext
68 lines
1.8 KiB
Plaintext
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How to Update U-Boot on imx6ulz_smm_m2 board
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Required software on the host PC:
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- UUU: https://github.com/NXPmicro/mfgtools
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Build U-Boot for m2:
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$ make mrproper
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$ make imx6ulz_smm_m2_defconfig
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$ make
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This generates the SPL and u-boot-dtb.img binaries.
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1. Loading U-Boot via USB Serial Download Protocol
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Copy SPL and u-boot-dtb.img to the uuu folder.
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Load the U-Boot via USB:
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$ sudo uuu -v -b nand_script.lst u-boot-with-spl.imx
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where nand_script.lst contains the following:
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uuu_version 1.2.39
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# @_flash.bin | bootloader
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# @_image [_flash.bin] | image burn to nand, default is the same as bootloader
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# This command will be run when i.MX6/7 i.MX8MM, i.MX8MQ
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SDP: boot -f _flash.bin
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# This command will be run when ROM support stream mode
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# i.MX8QXP, i.MX8QM
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SDPS: boot -f _flash.bin
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# These commands will be run when use SPL and will be skipped if no spl
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# SDPU will be deprecated. please use SDPV instead of SDPU
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# {
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SDPU: delay 1000
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SDPU: write -f _flash.bin -offset 0x57c00
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SDPU: jump
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# }
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# These commands will be run when use SPL and will be skipped if no spl
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# if (SPL support SDPV)
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# {
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SDPV: delay 1000
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SDPV: write -f _flash.bin -offset 0x11000
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SDPV: jump
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# }
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FB: ucmd setenv fastboot_buffer ${loadaddr}
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FB: download -f _image
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FB: ucmd if test ! -n "$fastboot_bytes"; then setenv fastboot_bytes $filesize; else true; fi
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# Burn image to nandfit partition if needed
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FB: ucmd if env exists nandfit_part; then nand erase.part nandfit; nand write ${fastboot_buffer} nandfit ${fastboot_bytes}; else true; fi;
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FB: ucmd nandbcb init ${fastboot_buffer} nandboot ${fastboot_bytes}
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FB: Done
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Then U-Boot starts and its messages appear in the console program.
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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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