~~NOCACHE~~
====== Entry Page ======
== Third-Party Add-Ons ==
   * [[:en:third-party:ittia:db-sql|ITTIA DB SQL]]
<WRAP hide>
   * [[:en:third-party:systemcorp:iec61850|SystemCORP IEC 61850]]
   * [[:en:third-party:netmodule:iec62439|NetModule IEC 62439]]
</WRAP>

===== Board Support Packages =====
  * [[.:linux:yocto:overview| YOCTO Linux BSP Documentation]] 

===== Product URL list =====

[[https://www.tq-group.com/en/products/tq-embedded/arm-architecture/tqma8xx/|TQ product page TQMa8Xx]]\\  

===== Starterkit =====

  * [[.:mba8xx:dip_switches|  MBa8Xx DIP switch settings]]


====== Hardware ======
===== Onboard I2C devices =====

<accordion>
<panel title="TQMa8Xx Rev.02xx / MBa8Xx Rev.02xx">
^ I2C bus  ^  TQMa8Xx  ^^^^^
^ I2C1  |  0x19\\ Temperature sensor  |  0x31\\ EEPROM\\  (software protection)  |  0x57\\  EEPROM  |  0x51\\  EEPROM  |  0x68\\ RTC  |

^ I2C bus  ^  MBa8Xx  ^^^^^^^^
^ I2C1  |  0x18\\ Audio codec  |  0x1C\\ Temperature sensor  |  0x2C\\ Display-Port bridge  |  0x34\\ EEPROM (software protection)  |  0x44\\  USB Hub  |  0x54\\ EEPROM  |  0x6A\\ PCIe clock generator  |  0x70\\ Port Expander  |

</panel>

<panel title="TQMa8Xx Rev.01xx / MBa8Xx Rev.01xx">
^ I2C bus  ^  TQMa8Xx  ^^^^^
^ I2C1  |  0x19\\ Temperature sensor  |  0x31\\ Temperature sensor  |  0x50\\  EEPROM  |  0x51\\  EEPROM  |  0x68\\ RTC  |

^ I2C bus  ^  MBa8Xx  ^^^^^^^^
^ I2C1  |  0x18\\ Audio codec  |  0x1C\\ Temperature sensor  |  0x2C\\ Display-Port bridge  |  0x2D\\ USB-Hub  |  0x34\\ Temperature sensor  |  0x54\\ EEPROM  |  0x6A\\ PCIe clock generator  |  0x70\\ Port Expander  |
</panel>
</accordion>
====== Hardware Issues ======




====== Linux BSP ======
===== U-Boot =====
<panel type="default" title="U-Boot" subtitle="Supported Features" no-body="true">
^ Feature  ^^^^ BSP Revision  ^^^^^^^^ Remarks  ^
^ TQ Product  ^ Chip   ^ Interface  ^ Function  ^  0001  ^  0002  ^  0005  ^  0006  ^  0007  ^  0009  ^  0016  ^  0017  ^  ::: ^
| TQMa8Xx  | i.MX8X  | ENET0  | GbE  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |
| TQMa8Xx  | i.MX8X  | ENET1  | GbE  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |
| TQMa8Xx  | i.MX8X  | I²C  | EEPROM, Temperature Sensors  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |    |  
| TQMa8Xx  | i.MX8X  | UART  | Debug Console  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  default console  |
| TQMa8Xx  | i.MX8X  | uSDHC  | eMMC / SD-Card  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  | SD card / eMMC  |
| TQMa8Xx  | i.MX8X  | Fuse  |   |   |   |  •  |  •  |  •  |  •  |  •  |  •  |   |
</panel>

==== Supported boot devices ====
<panel type="default" title="Supported boot devices" no-body="true">
^  Boot device  ^  supported  ^
|  eMMC  |  •  |
|  SD Card  |  •  |
</panel>

===== Kernel =====
===== Operating System =====
<panel type="default" title="Operating System" subtitle="Supported Features" no-body="true">
^ Feature  ^^^^ BSP Revision  ^^^^^^^^ Remarks  ^
^ TQ Product  ^ Chip  ^ Interface  ^ Function  ^  0001  ^  0002   ^  0005  ^  0006  ^  0007  ^  0009  ^  0016  ^  0017  ^ :::^ 
| TQMa8x  | i.MX8X  | ENET0 | GbE  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |    
| :::  | i.MX8X  | ENET1 | GbE  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |
| :::  | i.MX8X  | FlexSPI  | QSPI NOR Flash |  |  |  |  |  |  |  |  •  |     
| :::  | i.MX8X  | I²C1  | Bus Access |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  
| :::  | i.MX8X  | MIPI DSI  | LVDS  |  |  |  •  |  •  |  •  |  •  |  •  |  •  | Tested with Tianma TM070JVHG33 display |
| :::  | i.MX8X  | LPSPI1  | Bus access  |  |  |  |  |  |  |  |  •  | 
| :::  | i.MX8X  | LPSPI2  | Bus access  |  |  |  |  |  |  |  |  •  |
| :::  | i.MX8X  | LPSPI3  | Bus access  |  |  |  |  |  |  |  |  •  |
| :::  | i.MX8X  | LPUART1 | Console |  •  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |
| :::  | i.MX8X  | LPUART3 | TTL |  |  |  |  |  |  |  |  •  |
| :::  | i.MX8X  | GPIO |  |  |  •  |  •  |  •  |  •  |  •  |  •  |  •  |
| :::  | i.MX8X  | PCIe | Host |  |  •  |  •  |  •  |  •  |  •  |  •  |  •  | MBa8xx ≥ Rev.0102 required, also see [[.:linux:yocto:known_issues#linux_kernel_does_not_start_with_sumotqma8bspsw0005_on_mba8xx_rev0101|Known Issues]]   |
| :::  | i.MX8X  | USB2 | Host |  |  |  •  |  •  |  •  |  •  |  •  |  •  |
| :::  | i.MX8X  | uSDHC  | uSDHC0 / eMMC\\  uSDHC1 / SD Card   |  •  |  •  |  •  |  •  |  •  |  •  |   •  |  •  |
| MBa8xx  | USB4604I  | USB1  | Host  |  |  |  •  |  •  |  •  |  •  |  •  |  •  | Available on X24 (MPCIe)  |
| :::  | USB4604I  | USB2  | Host  |  |  |  •  |  •  |  •  |  •  |  •  |  •  | Available on X22 (LVDS)  | 
| :::  | USB4604I  | USB3  | Host  |  |  |  •  |  •  |  •  |  •  |  •  |  •  | Available on X20  | 
| :::  | USB4604I  | USB4  | Host  |  |  |  •  |  •  |  •  |  •  |  •  |  •  | Available on X20  |
</panel>
===== FAQ =====
===== Yocto =====
===== BSP Version Matrix =====

<panel type="default" title="Yocto BSP Version Matrix " no-body="true">

^  BSP Revision  ^  ++meta-tq release|\\ [[https://github.com/tq-systems/meta-tq]]++  ^  Yocto Project / Poky Release  ^  Target machine((i.e. value for [[https://www.yoctoproject.org/docs/2.4.4/ref-manual/ref-manual.html#var-MACHINE|MACHINE]] variable))  ^  U-Boot  ^  Linux Kernel  ^
|  0001  |  2.4.4 - Rocko  |  [[https://github.com/tq-systems/ci-meta-tq/tree/rocko-tqma8x|rocko-tqma8x]]  |  tqma8qx-mba8qx  |  v2017.03 rel_4.9.88_imx_imx8qxp_beta2  |  rel_imx_4.9.88_imx8qxp_beta2  | 
|  0002  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8qx-mba8xx  |  v2018.03 rel_imx_4.14.78_1.0.0_ga  |  rel_imx_4.14.78_1.0.0_ga  |
|  0005  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |  v2018.03 rel_imx_4.14.78_1.0.0_ga  |  rel_imx_4.14.78_1.0.0_ga  |
|  0006  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |  v2018.03 rel_imx_4.14.78_1.0.0_ga  |  rel_imx_4.14.78_1.0.0_ga  |
|  0007  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |  v2018.03 rel_imx_4.14.78_1.0.0_ga  |  rel_imx_4.14.78_1.0.0_ga  |
|  0009  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |  v2018.03 rel_imx_4.14.78_1.0.0_ga  |  rel_imx_4.14.78_1.0.0_ga  |
|  0016  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |   v2018.03-rel_imx_4.14.98_2.2.0_ga  |  rel_imx_4.14.98_2.2.0_ga  | 
|  0016  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |   v2018.03-rel_imx_4.14.98_2.2.0_ga  |  rel_imx_4.14.98_2.2.0_ga  | 
|  0017  |  2.5.2 - Sumo  |  [[https://github.com/tq-systems/ci-meta-tq/tree/sumo-tqma8x|sumo-tqma8x]]  |  tqma8xqp-mba8xx \\  tqma8xd-mba8xx  |   v2018.03-rel_imx_4.14.98_2.2.0_ga  |  rel_imx_4.14.98_2.2.0_ga  | 
|  0025  |   - Zeus  |  [[https://github.com/tq-systems/ci-meta-tq/tree/zeus-tqma8|zeus-tqma8]]  |  tqma8xqp-mba8xx  |   v2019.04-lf-5.4.y-1.0.0  |  lf-5.4.y-1.0.0   |


{{section>..:..:general_information:yocto:tips#bsp_release_auto_notification&noheader}}

</panel>
===== Changelog =====
<panel type="default" title="Yocto BSP Changelog" no-body="true">
<accordion>
<panel title="Rev.0025">
**BSP**
  * 
  * 


**Linux**
  *   
  *    
  *  
</panel>
<panel title="Rev.0017">
**BSP**
  * meta-dumpling: added u-boot-fw-utils in packagegroups
  * meta-tq : u-boot-fw-utils support


**Linux**
  * added spidev for busses SPI1 / SPI2 / SPI3  
  * added LPUART3 / available on unused SAI pins   
  * fix QSPI driver 
</panel>

<panel title="Rev.0016"> 
**BSP**
  * Update to scfw version 1.2.7
  * systemd-machine-units reduce default can bitrate

**U-Boot**
  * Update to imx_4.14.98_2.2.0 
  * Fix QSPI probe write a byte to flash (MACRONIX)
  * QSPI Boot support

**Linux**
  * Update to rel_imx_4.14.98_2.2.0
</panel>
<panel title="Rev.0009">
  * backport CAN fixes from current NXP kernel
  * support additional LVDS display
  * add etm11010g0dka
</panel>

<panel title="Rev.0007">
  * CAN / Ethernet preconfigured via systemd service
  * PCIe disabled DT for old STK
  * Ethernet phy led config fix
  * Better reserved memory config for TQMa8XD
</panel>

<panel title="Rev.0006">
  * PCIe GPIO pins (PERST pin config correction) in DT and U-Boot
  * PCIe DT with Gen1 only support (for transparent PCIe switch / bridge)
</panel>
<panel title="Rev.0005">
Global:

  * SCU Firmware based on porting kit v1.1.2

TQMa8XQP:

  * make LVDS work again
  * polish boot flow
  * rename configs and names (tqma8qxp-mba8xx -> tqma8xqp-mbaxx)
  * support net boot

TQMa8XD:

  * initial support (tqma8xd-mba8xx)

TQMa8XQPS

  * test newtwork support in linux
  * support net boot (GBE0)

</panel>
<panel title="Rev.0002">
  * port to yocto sumo / NXP rel_imx_4.14.78_ga
  * SCU firmware base v1.1
  * rename configs and names (tqma8qxp-mba8xx -> tqma8xqp-mbaxx) siehe version matrix
</panel>
<panel title="Rev.0001">
  * initial release
</panel>
</accordion>
</panel>





<WRAP hide>
++++ Rev.0017 |

**BSP**
  * meta-dumpling: added u-boot-fw-utils in packagegroups
  * meta-tq : u-boot-fw-utils support


**Linux**
 * added spidev for busses SPI1 / SPI2 / SPI3  
 * added LPUART3 / available on unused SAI pins   
 * fix QSPI driver 
  


++++

++++ Rev.0016 |

**BSP**
  * Update to scfw version 1.2.7
  * systemd-machine-units reduce default can bitrate

**U-Boot**
  * Update to imx_4.14.98_2.2.0 
  * Fix QSPI probe write a byte to flash (MACRONIX)
  * QSPI Boot support

**Linux**
  * Update to rel_imx_4.14.98_2.2.0

++++

++++ Rev.0009 |

  * backport CAN fixes from current NXP kernel
  * support additional LVDS display
  * add etm11010g0dka

++++

++++ Rev.0007 |

  * CAN / Ethernet preconfigured via systemd service
  * PCIe disabled DT for old STK
  * Ethernet phy led config fix
  * Better reserved memory config for TQMa8XD

++++

++++ Rev.0006 |


  * PCIe GPIO pins (PERST pin config correction) in DT and U-Boot
  * PCIe DT with Gen1 only support (for transparent PCIe switch / bridge)

++++

++++ Rev.0005 |

Global:

  * SCU Firmware based on porting kit v1.1.2

TQMa8XQP:

  * make LVDS work again
  * polish boot flow
  * rename configs and names (tqma8qxp-mba8xx -> tqma8xqp-mbaxx)
  * support net boot

TQMa8XD:

  * initial support (tqma8xd-mba8xx)

TQMa8XQPS

  * test newtwork support in linux
  * support net boot (GBE0)

++++

++++ Rev.0002 |

  * port to yocto sumo / NXP rel_imx_4.14.78_ga
  * SCU firmware base v1.1
  * rename configs and names (tqma8qxp-mba8xx -> tqma8xqp-mbaxx) siehe version matrix
++++
++++ Rev.0001 |

  * initial release
++++
</WRAP>
===== Yocto Partitions =====


++++ SD / eMMC image Partitions |

  * sector size 512 Byte
  * unpartitioned area: 8MiB (0x4000 sectors)

<panel type="default" title="Supported boot devices" no-body="true">

^ Size  ^ Usage  ^ Linux (SD-Card)  ^ Linux (eMMC)  ^
| 0x0001 sector  / 512 Byte  | MBR / Partition Table  |   |
| 0x0001 sector  / 512 Byte  | free  |  |
| 0x800 sectors / 1 MiB  | u-boot  |  |
| 0x1000 sectors / 2 MiB  | environment 2)  |   |
| 0x2000 sectors / 4 MiB  | reserved  |  |
| 0x20000 sectors / 64 MiB  | /boot / firmware (Kernel,devicetrees)  | mmcblk1p1  |
| 0x100000 sectors / 512 MiB  | RootFS  | mmcblk1p2  | |


</panel>
++++ 
===== Yocto Images =====

++++ Target Machine: TQMa8xd |

=== System Image ===

== SD Card/eMMC ==

^  Symlink   ^  File     ^
| tq-image-qt5-tqma8xd-mba8xx.wic | tq-image-qt5-tqma8xd-mba8xx-<build_timestamp>.rootfs.wic |

=== Bootstream (Bootloader) Binary ===
== SD Card/eMMC ==

^  Symlink   ^  File     ^
| imx-boot-tqma8xd-mba8xx-sd.bin | imx-boot-tqma8xd-mba8xx-sd.bin-flash |

=== Linux Kernel Binary ===
^  Symlink   ^  File     ^
| Image\\ Image-tqma8xd-mba8xx.bin  | Image--4.14.98-r0-tqma8xd-mba8xx-<build_timestamp>.bin  |

=== Devicetree Binarys ===
^  Symlink   ^  Description  ^
|  Image-fsl-imx8dx-tqma8xd-mba8xx.dtb\\  fsl-imx8dx-tqma8xd-mba8xx.dtb  |  device tree blob for TQMa8XD  |
|  Image-fsl-imx8dx-tqma8xd-mba8xx-lvds-etml1010g0dka.dtb\\  fsl-imx8dx-tqma8xd-mba8xx-lvds-etml1010g0dka.dtb  |  device tree blob for LVDS Display  |
|  Image-fsl-imx8dx-tqma8xd-mba8xx-lvds-tm070jvhg33.dtb\\  fsl-imx8dx-tqma8xd-mba8xx-lvds-tm070jvhg33.dtb  |  device tree blob for TIANMA LVDS Display  |
|  Image-fsl-imx8dx-tqma8xd-mba8xx-no-pcie.dtb\\  fsl-imx8dx-tqma8xd-mba8xx-no-pcie.dtb   | Devicetree for older Carrier Revision to disable PCIe |
|  Image-fsl-imx8dx-tqma8xd-mba8xx-pcie-gen1.dtb\\  fsl-imx8dx-tqma8xd-mba8xx-pcie-gen1.dtb  | Devicetree for older Carrier Revision to enable PCIe Gen1 |

=== RootFS Images ===

^  Symlink   ^  File     ^
|  tq-image-qt5-tqma8xd-mba8xx.ext4  | tq-image-qt5-tqma8xd-mba8xx-<build_timestamp>.rootfs.ext4 |
|  tq-image-qt5-tqma8xd-mba8xx.tar.gz  | tq-image-qt5-tqma8xd-mba8xx-<build_timestamp>.rootfs.tar.gz  |


++++


++++ Target Machine: TQMa8xqp |
=== System Image ===

== SD Card/eMMC ==

^  Symlink   ^  File     ^
| tq-image-qt5-tqma8xqp-mba8xx.wic | tq-image-qt5-tqma8xqp-mba8xx-<build_timestamp>.rootfs.wic |

=== Bootstream (Bootloader) Binary ===
== SD Card/eMMC ==

^  Symlink   ^  File     ^
| imx-boot-tqma8xqp-mba8xx-sd.bin | imx-boot-tqma8xqp-mba8xx-sd.bin-flash |

=== Linux Kernel Binary ===
^  Symlink   ^  File     ^
| Image\\ Image-tqma8xqp-mba8xx.bin  | Image--4.14.98-r0-tqma8xqp-mba8xx-<build_timestamp>.bin  |

=== Devicetree Binarys ===
^  Symlink   ^  Description  ^
|  Image-fsl-imx8dx-tqma8xqp-mba8xx.dtb\\  fsl-imx8dx-tqma8xqp-mba8xx.dtb  |  device tree blob for TQMa8XQP  |
|  Image-fsl-imx8dx-tqma8xqp-mba8xx-lvds-etml1010g0dka.dtb\\  fsl-imx8dx-tqma8xqp-mba8xx-lvds-etml1010g0dka.dtb  |  device tree blob for LVDS Display  |
|  Image-fsl-imx8dx-tqma8xqp-mba8xx-lvds-tm070jvhg33.dtb\\  fsl-imx8dx-tqma8xqp-mba8xx-lvds-tm070jvhg33.dtb  |  device tree blob for TIANMA LVDS Display  |
|  Image-fsl-imx8dx-tqma8xqp-mba8xx-no-pcie.dtb\\  fsl-imx8dx-tqma8xqp-mba8xx-no-pcie.dtb   | Devicetree for older Carrier Revision to disable PCIe |
|  Image-fsl-imx8dx-tqma8xqp-mba8xx-pcie-gen1.dtb\\  fsl-imx8dx-tqma8xqp-mba8xx-pcie-gen1.dtb  | Devicetree for older Carrier Revision to enable PCIe Gen1 |

=== RootFS Images ===

^  Symlink   ^  File     ^
|  tq-image-qt5-tqma8xqp-mba8xx.ext4  | tq-image-qt5-tqma8xqp-mba8xx-<build_timestamp>.rootfs.ext4 |
|  tq-image-qt5-tqma8xqp-mba8xx.tar.gz  | tq-image-qt5-tqma8xqp-mba8xx-<build_timestamp>.rootfs.tar.gz  |

++++



===== Known Issues =====

==== Linux kernel does not start with sumo.TQMa8.BSP.SW.0005 on MBa8Xx ≤ Rev.0101 ====
^ Details  ||
^ [c]Effect[/c]  | Linux kernel does not start (no more messages after ''Starting kernel...'')  |
^ [c]Issue[/c]  | PCIe requires external clock generator  |
^ Affected Revisions  ||
^ [c]Bsp[/c]  | sumo.TQMa8Xx.BSP.SW.0002\\ sumo.TQMa8.BSP.SW.0005  |
^ [c]Module[/c]  | all revisions  |
^ [c]Mainboard[/c]  | MBa8Xx ≤ Rev.0101  |
^ Solution  ||
^ [c]Fix[/c] | Upgrade to MBa8Xx Rev.0102 (please contact [[support@tq-group.com?subject=MBa8Xx: Upgrade to Rev.0102|TQ Support]] for further information)  |
^ [c]Workaround[/c] | Use {{ :en:arm:tqma8xx:tqma8.bsp.sw.0006_dtbs-no-pcie.tar |devicetree with disabled PCIe interface}} (will be included in next BSP release)  |

----

==== PCIe device detection ====
^ Details  ||
^ [c]Effect[/c]  | Some PCIe devices (e.g. PCIe switches) may not be properly detected  |
^ [c]Issue[/c]  | PCIe signals //clock//, //enable// and //reset// do not comply to the PCIe specification  |
^ Affected Revisions  ||
^ [c]Bsp[/c]  | ≤ sumo.TQMa8.BSP.SW.0005  |
^ [c]Module[/c]  | all revisions  |
^ [c]Mainboard[/c]  | MBa8Xx ≥ Rev.0102  |
^ Solution  ||
^ [c]Fix[/c] | TBD  |
^ [c]Workaround[/c] | Limit PCIe speed to Gen1 by using proper devicetree ''*-pcie-gen1.dtb'' (provided with BSP release sumo.TQMa8.BSP.SW.0006)  |

----

==== No QSPI NOR Flash support in U-Boot ====
^ Details  ||
^ [c]Effect[/c]  | Executing ''sf probe'' in U-Boot causes the first byte of the QSPI NOR Flash to be overwritten  |
^ [c]Issue[/c]  | QSPI NOR Flash is not suppported in U-Boot  |
^ Affected Revisions  ||
^ [c]Bsp[/c]  | sumo.TQMa8.BSP.SW.0005  |
^ [c]Module[/c]  | all revisions  |
^ [c]Mainboard[/c]  | all revisions  |
^ Solution  ||
^ [c]Fix[/c] | TBD  |
^ [c]Workaround[/c] | N/A  |

===== Deployment Yocto =====
==== Images Yocto ====


==== Updating existing firmware over ethernet ====
=== Device assignment ===
<WRAP round info 40%>__Device assignment:__\\
//mmcdev 0// = eMMC\\
//mmcdev 1// = SD Card\\
</WRAP>

===Yocto specific command Update eMMC=== 
1. Run the following commands in the Uboot shell to create update script: 
<code> 
setenv root_loop 'setenv start 24000 && setenv r1 $rootblks16 && while itest $r1 -gt 0; do if itest $r1 -gt 0x100000; then setenv count 0x100000; else setenv count $r1; fi && mmc dev 1 && mmc read $loadaddr $start $count && mmc dev 0 && mmc write $loadaddr $start $count && setexpr start $start + $count && setexpr r1 $r1 - $count; done; setenv r1; setenv start; setenv count'
</code> 

<code> 
setenv  install_firmware 'echo MBR... && mmc dev 1 && mmc read $loadaddr 0 1 && mmc dev 0 && mmc write $loadaddr 0 1 && echo U-Boot... && mmc dev 1 && mmc read $loadaddr 3F 1FC0 && mmc dev 0 && mmc write $loadaddr 3F 1FC0 && echo U-Boot environment... && mmc dev 1 && mmc read $loadaddr 2000 2000 && mmc dev 0 && mmc write $loadaddr 2000 2000 && echo Firmware Partition... && mmc dev 1 && mmc read $loadaddr 4000 20000 && mmc dev 0 && mmc write $loadaddr 4000 20000  && echo Root FS... && run root_loop'
</code> 

  * create  the environment variable **rootblks16** and set the value accordingly to the size of the RootFS in this case 2070MB.
<WRAP round important> To calculate the value of **rootblks16** devide the size of the image in byte by 512 and convert the result into a hex value.\\  

2070** * **1024** * **1024 = 2170552320
\\
2170552320** / **512 = 4239360
\\ 
4239360 = 40B000<sub>HEX</sub>

</WRAP>
<code>
setenv rootblks16 0x40B000
</code>

==== NFS Boot ====

=== uboot command to start netboot ===

<code>
=> run netboot
</code>