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https://github.com/oresat/oresat-star-tracker-hardware.git
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72 lines
2.2 KiB
Plaintext
72 lines
2.2 KiB
Plaintext
#######################
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#### Enabling eMMC ####
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#######################
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# build the needed eMMC device tree file
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$ cd /opt/source/bb.org-overlays
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$ make
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...
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# copy the device tree file to /lib/firmware
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$ cp ./src/arm/BB-BONE-eMMC1-01-00A0.dtbo /lib/firmware
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# add the below line to your /boot/uEnv.txt file
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uboot_overlay_addr4=/lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo
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# reboot and you should see mmcblk1 in /dev
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#######################
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#### Flashing eMMC ####
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#######################
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# grow the sd card partition so we have room to download the image
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$ cd /opt/scripts/tools
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$ sudo ./grow_partition.sh
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$ sudo reboot
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# download the latest image, this might take a while
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$ curl -O https://debian.beagleboard.org/images/bone-debian-9.9-iot-armhf-2019-08-03-4gb.img.xz
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# if you don't have internet on the board, download it
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# to your computer and scp it onto the board
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# be root
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$ sudo su
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# dd the image onto the eMMC. This could take
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# a while, it took me 5~10 minutes
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$ sudo xzcat bone-debian-9.9-iot-armhf-2019-08-03-4gb.img.xz | dd of=/dev/mmcblk1 bs=1M
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############################
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#### Make eMMC Bootable ####
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############################
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# the eMMC is now flashed, but we still have a few steps before it will boot Debian.
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# recall before when we have to add the dtbo to /lib/firmware and modify the uEnv.txt
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# file in order to enable the eMMC. Well, if we tried to boot the eMMC right now, it
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# would boot into uBoot, but would not boot Debian because uBoot would not enable the
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# eMMC for linux and thus there would be not roots. So, we need to add that device tree
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# to the system on the eMMC and tell it to use it.
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# mount the eMMC
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$ sudo mount /dev/mmcblk1p1 /mnt
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# copy the dtbo onto the eMMC system
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$ cp /lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo /mnt/lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo
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# add the below line to the eMMC system uEnv.txt file (/mnt/boot/uEnv.txt)
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uboot_overlay_addr4=/lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo
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# unmount the eMMC
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$ sudo umount /mnt
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# shutdown
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$ sudo shutdown -h now
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# unplug the micro SD card
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# switch the sys boot jumpers to boot from the eMMC(mmc1)
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# to boot from the SD card, the should be sysboot[4:0] == 0b11000
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# to boot from the eMMC, they should be sysboot[4:0] == 0b11100
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# cycle power and it should boot into Debian on the eMMC
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