User:Parasense/arm

OMAP5 uEVM notes

Fedora 20 uENV.txt:

setenv bootm_size 0x20000000
setenv bootargs console=${console} vram=${vram} root=LABEL=_/ ro rootwait rhgb
ext4load mmc 0:3 0x82000000 /boot/vmlinuz-3.14.0-0.rc6.git4.1.fc21.armv7hl
ext4load mmc 0:3 0x88080000 /boot/uInitrd-3.14.0-0.rc6.git4.1.fc21.armv7hl
ext4load mmc 0:3 0x88000000 /boot/dtb-3.14.0-0.rc6.git4.1.fc21.armv7hl/omap5-uevm.dtb
bootz 0x82000000 0x88080000 0x88000000

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Fedora 21/rawhide notes

Install MLO and u-boot on non-vfat image: WARNING: BETA NOTES

sudo dd if=MLO           \
        of=/dev/sdz      \
      conv=fsync,notrunc \
      seek=128k

sudo dd if=u-boot.img    \
        of=/dev/sdz      \
     count=2             \
      seek=1             \
      conv=notrunc,fsync \
        bs=384k

F20 notes

• download the f20 minimal image

• Decompress

• Extract the rootfs

dd if=Fedora-Minimal-VFAT-armhfp-20-1-sda.raw \
   of=f20-minimal-rootfs.ext4

• Shrink the rootfs image file

e2fsck    -f  f20-minimal-rootfs.ext4 &> /dev/null
resize2fs -M  f20-minimal-rootfs.ext4

• Create a new f20 disk image file

truncate -s 4G f20-minimal.disk

• Partition the newly created disk image

sgdisk

Tips & Tricks

You can monitor the DD command in an easy one liner.

dd if=/dev/sdc3 of=f20-minimal-rootfs.ext4-ORIG &   while ps -p $! ; do kill -USR1 $! ; sleep 5 ; done

This signals the DD process to spew progress info every five seconds. Especially useful on very slow sdcard, or large data transfers.

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