==== Partition scheme ====

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

=== SD / eMMC images ===

== BSP REV.0110 ==

  * sector size 512 Byte
  * unpartitioned area: 4MiB (0x2000 sectors)

^ Sector           ^ Size                     ^ Usage                      ^
|0x0000 ... 0x0000 | 0x0001 sector  / 512 Byte| MBR / Partition Table      |
|0x0001 ... 0x0001 | 0x0001 sector  / 512 Byte| reserved for ROM loader (( See CPU reference Manual. This sector can be used for Redundant Boot Support))|
|0x0002 ... 0x07ff | 0x07fe sectors / 1023 KiB| u-boot                     |
|0x0800 ... 0x0fff | 0x0800 sectors / 1MiB    | environment             (( Environment organisation: \\   * configured environment size: 8kiB (16 Sectors)  \\   * environment type: redundand \\  * primary environment (sectors): 0x0800 ... 0x080f (0x100000 ... 0x101fff)  \\  * redundand environment (sectors): 0x0810 ... 0x081f (0x102000 ... 0x103fff) ))  | 
 
  * partitioned area:

^ Partition ^ Size     ^ Usage                ^
|  1        | 20 MiB   | Firmware partition (( Firmware partitions contains all device tree blobs and Linux kernel image )) |
|  2        | 256 MiB  | root FS              |
|  3        | 256 MiB  | Spare, not formatted |
|  4        | ----     | ----                 |


++++ BSP REV ≤ 0109 |
  * sector size 512 Byte
  * unpartitioned area: 4MiB (0x2000 sectors)

^ Sector           ^ Size                     ^ Usage                      ^
|0x0000 ... 0x0000 | 0x0001 sector  / 512 Byte| MBR / Partition Table      |
|0x0001 ... 0x0001 | 0x0001 sector  / 512 Byte| reserved for ROM loader 2) |
|0x0002 ... 0x07ff | 0x07fe sectors / 1023 KiB| u-boot                     |
|0x0800 ... 0x0fff | 0x0800 sectors / 1MiB    | environment             3) | 
|0x1000 ... 0x17ff | 0x0800 sectors / 1MiB    | device tree blob           |

1) 
2) See CPU reference Manual. This sector can be used for Redundant Boot Support
3) Environment organisation:

  * configured environment size: 8kiB (16 Sectors)
  * environment type: redundand
  * primary environment (sectors): 0x0800 ... 0x080f (0x100000 ... 0x101fff)
  * redundand environment (sectors): 0x0810 ... 0x081f (0x102000 ... 0x103fff)


  * partitioned area:

^ Partition ^ Size     ^ Usage                ^
|  1        | 4 MiB    | Kernel image         |
|  2        | 256 MiB  | root FS              |
|  3        | 256 MiB  | Spare, not formatted |
|  4        | ----     | ----                 |
++++

The partition scheme is defined using the config file **<BSP_ROOT>config/platform-tq-mba6x/config/images/uboot-hd.config**. The creation of the image is controlled using the PTXdist packages image-uboot-tqma6<q|s>-hd.make, these packages are located at **<BSP_ROOT>/configs/platform-tq-mba6x/rules/**.

To create the image the genimage host tool is used. This tool is automatically selected and built. You can find the build directory under **<BSP_ROOT>/platform-MBa6x/build-host/genimage**. There is also a README file documenting how to use this tool.

=== SPI NOR ===

  * sector size 64 KiB

^ Sector           ^ Size                       ^ Usage           ^
|0x0000 ... 0x0007 | 0x0008 sectors / 512 KiB   | U-Boot ((See CPU reference Manual. The U-Boot image must be placed at offset 0x400 ))       |
|0x0008 ... 0x0008 | 0x0001 sector  /  64 KiB   | environment0    |
|0x0009 ... 0x0009 | 0x0001 sector  /  64 KiB   | environment1    |
|0x000b ... 0x000f | 0x0005 sectors / 320 KiB   | devicetree      | 
|0x0010 ... 0x0070 | 0x0060 sectors /   6 MiB   | Kernel          |

*) See CPU reference Manual. The U-Boot image must be placed at offset 0x400