===== Partition scheme =====

<WRAP round important>Changing the partition scheme may affect the boot loader update capability and / or the kernel command line parameters!</WRAP>

The following partition scheme is used for SD / eMMC images

  * sector size = 512 Byte

^ Sector           ^ Size                  ^ Usage                 ^ in Partition table ^
|0x0000 ... 0x0001 | 0x0002 sectors / 1kiB | MBR / Partition table | |
|0x0002 ... 0x001B | 0x0019 sector / 127kiB | U-Boot environment    | |
|0x3000 ... 0x3FFF | 0x1000 sectors / 2MiB | device tree blob      | |
|0x4000 ... 0x7FFF | 0x4000 sectors / 8MiB | U-Boot partition (!) | * |
|0x8000 ... 0xBFFF | 0x4000 sectors / 8MiB | Kernel partition      | * |
|0xC000 ... 0x2BFFF| 0x20000 sectors / 64 MiB | RootFS partition   | * |
|0x2C000...0xABFFF| 0x80000 sectors / 256 MiB | free to use partition (!!) | * |
\\
<WRAP round info>
(!) The Freescale tool (sdimage) used to create the SD/eMMC image writes two copies of U-Boot to this partition. The secondary copy starts at the sector following the last sector of the primary copy. Therefore no absolute addresses can be given.

(!!) Currently only SD/eMMC images implement this partition. MfgTool profiles do not yet create this partition.
</WRAP>

The partition scheme is defined for platforms TQMa28/TQMa28L/TQMa28-fsl using the config file\\ **<BSPROOT>/configs/platforms/tqma28/tqma28/config/images/tqma28-hd.config**\\ 

The creation of the image is controlled using the project local PTXdist package **image-hd2**. To create the image the **genimage** host tool is used. This tool is automatically selected and built. You can find the build directory under <BSPROOT>/platform-<tqma28-fsl | tqma28>/build-host/genimage. There is also a README file documenting how to use this tool and the config file.