Upgrade from BSP version "PD12.0.x"
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In any case you can boot into Barebox from a bootable SD-Card.
Easiest way to get a bootable SD-Card with PD12.0.1 is to write the image

  ftp://ftp.phytec.de/pub/Products/phyCARD-L/Linux/PD12.0.1/image.sdcard

onto a 1 GB SD-Card by using the Linux command

  sudo dd if=image.sdcard of=/dev/sd<x> bs=1MB



1. From within the old Barebox, type "edit env/config" to replace variable definition
   "nand_parts" with this one:
     nand_parts="128k(xload),128k(xload1),128k(xload2),128k(xload3),1M(barebox),512k(bareboxenv),6M(kernel),512k(oftree),2M(bmp),-(root)"

2. Type Ctrl-D and then "saveenv". After that restart Barebox in order to apply the changes.

3. Flash new MLO and Barebox using the adapted "nand_parts" configuration by now typing:
     gpmc_nand0.eccmode=hamming_hw_romcode
     erase /dev/nand0.xload.bb
     tftp MLO /dev/nand0.xload.bb
     gpmc_nand0.eccmode=bch8_hw
     erase /dev/nand0.barebox.bb
     tftp barebox-image /dev/nand0.barebox.bb
     erase /dev/nand0.bareboxenv.bb

4.  Restart into new Barebox. Continue with flashing Linux kernel and rootfs.