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https://github.com/brain-hackers/u-boot-brain
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CPU: Freescale i.MX6ULL rev1.1 792 MHz (running at 396 MHz) CPU: Industrial temperature grade (-40C to 105C) at 49C Reset cause: POR Model: Seeed NPi iMX6ULL Dev Board with NAND Board: Seeed NPi i.MX6ULL Dev Board DRAM: 512 MiB NAND: 512 MiB MMC: FSL_SDHC: 0 In: serial@2020000 Out: serial@2020000 Err: serial@2020000 Net: FEC0 Working: - Eth0 - MMC/SD - NAND - UART 1 - USB host Signed-off-by: Navin Sankar Velliangiri <navin@linumiz.com> Note: Changes in v2: * removed unnecessary space in imx6ull-seeed-npi-imx6ull-dev-board.dts file. * Used SZ_2M for CONFIG_SYS_MALLOC_LEN size allocation.
62 lines
1.5 KiB
Plaintext
62 lines
1.5 KiB
Plaintext
How to use U-BOOT on SeeedStudio NPI-IMX6ULL Single Board Computer
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- Configure and build U-Boot for NPI-IMX6ULL:
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$ export ARCH=arm
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$ export CROSS_COMPILE=arm-none-linux-gnueabihf-
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$ make seeed_npi_imx6ull_defconfig
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$ make
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This will generate SPL and u-boot-dtb.img images.
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Boot from MMC/SD:
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- The SPL and u-boot-dtb.img images need to be flashed 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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$ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
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- Boot mode settings:
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Boot switch position: SW1 -> 0
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SW2 -> 1
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SW3 -> 0
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SW4 -> 0
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SW5 -> 1
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SW6 -> 0
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SW7 -> 0
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SW8 -> 1
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Boot from NAND:
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- Boot the board using SD/MMC or Serial download and load the SPL into memory
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either from SD/MMC or TFTP.
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Default MTD layout is 512k(spl),1m(uboot),1m(uboot-dup),-(ubi)
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Flash SPL to NAND from SD/MMC,
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$ ext4load mmc 0:2 $loadaddr SPL
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$ nand erase.part spl
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$ nandbcb init $loadaddr 0x0 $filesize
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Flash u-boot image to NAND from SD/MMC,
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$ ext4load mmc 0:2 $loadaddr u-boot-dtb.img
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$ nand erase.part uboot
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$ nand write $loadaddr uboot $filesize
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- Boot mode settings:
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Boot switch position: SW1 -> 0
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SW2 -> 1
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SW3 -> 1
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SW4 -> 0
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SW5 -> 0
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SW6 -> 1
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SW7 -> 0
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SW8 -> 0
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- Connect the Serial cable to UART0 and the PC for the console.
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- Reset the board using reset button and U-Boot should boot from NAND.
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