The microSD card provided with BELK/BXELK is partitioned as shown in the following image:
It is worth remembering that the microSD card is [[System boot and recovery via microSD card (BELK/BXELK)|bootable]] and U-Boot environment is retrieved from (and stored to with <code>saveenv</code>) into the FAT partition as <code>bora.env</code>
<section end=microSDlayout/>
==Updates==
{{ImportantMessage|text=It's recommended to use the latest source release available. Please refer to [[#Release_notes | Release notes]] for further information.}}
For more information about the access to these repositories, please refer to [[Build_system_(BELK/BXELK)Accessing_DAVE_Embedded_Systems_restricted_git_repositories#U-Boot_and_Linux_git_repositoriesPublic_key_access|this link]].
=== Updating the repositories from BELK 2.1.0 ===
When the account is enabled, you can synchronize a source tree entering the repository directory and launching the <code>git fetch</code> command. Please note that <code>git fetch</code> doesn't merge the commits on the current branch. To do that, you should run the <code>git merge</code> command or replace the ''fetch-merge'' process with a single <code>git pull</code> command. Please note that the recommended method is the ''fetch-merge'' process. For further information on Git, please refer to [http://git-scm.com/documentation Git Documentation].
<section end=Synchronizingthegitrepositories/>
<section begin=Releasenotes/>
== Release notes ==
=== BELK 4.1.4 ===
Updates:
# Fixes for MAC programming on [[BELK-TN-010: MAC address programming on OTP|NOR SPI OTP]]
==== Known Limitations ====
{| class="wikitable"
|-
!ID
!Component
!Subsystem
!Description
|-
|0001
|BoraEVB
|External DDR3 bank (BoraEVB only)
|DDR3 bank can be populated on request. For more details please refer to [mailto:sales@dave.eu Sales Department].
|-
|0002
|BoraEVB/BoraXEVB
|ETH1 interface
|Please refer to [[AN-BELK-006:_Enabling_dual_Gigabit_Ethernet_support_on_BoraEVB/BoraXEVB|this application note]] for second Ethernet interface support.
|-
|0003
|BoraEVB/BoraXEVB
|RTC
|Date/time retention is limited to about 4 hours.
|-
|0004
|BoraEVB/BoraXEVB
|System clock runs slower
|As per [https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841831/CPU+frequency+scaling#Missing%20Features,%20Known%20Issues%20and%20Limitations Xilinx issue], @333MHz (speedgrade -3) system clock is slower then expected
|}
=== BELK 4.1.2 ===
Updates:
# Added support for MAC programming on [[BELK-TN-010: MAC address programming on OTP|NOR SPI OTP]]
==== Known Limitations ====
{| class="wikitable"
|-
!ID
!Component
!Subsystem
!Description
|-
|0001
|BoraEVB
|External DDR3 bank (BoraEVB only)
|DDR3 bank can be populated on request. For more details please refer to [mailto:sales@dave.eu Sales Department].
|-
|0002
|BoraEVB/BoraXEVB
|ETH1 interface
|Please refer to [[AN-BELK-006:_Enabling_dual_Gigabit_Ethernet_support_on_BoraEVB/BoraXEVB|this application note]] for second Ethernet interface support.
|-
|0003
|BoraEVB/BoraXEVB
|RTC
|Date/time retention is limited to about 4 hours.
|-
|0004
|BoraEVB/BoraXEVB
|System clock runs slower
|As per [https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841831/CPU+frequency+scaling#Missing%20Features,%20Known%20Issues%20and%20Limitations Xilinx issue], @333MHz (speedgrade -3) system clock is slower then expected
|-
|0005
|Bora/BoraX/BoraLite SOM
|NOR QSPI flash
|Wrong QSPI flash size detection in belk-4.x.x: this issue has been fixed on u-boot repository:
* tag '''belk-4.1.3'''
* related commit 6074f0dc148d9e40e82fab9ad44ab24156323312
|}
=== BELK 4.1.0 ===
Updates:
# Added support for [https://www.dave.eu/products/som/xilinx/zynq-XC7Z010-XC7Z020_boralite BoraLite SOM]
==== Known Limitations ====
{| class="wikitable"
|-
!ID
!Component
!Subsystem
!Description
|-
|0001
|BoraEVB
|External DDR3 bank (BoraEVB only)
|DDR3 bank can be populated on request. For more details please refer to [mailto:sales@dave.eu Sales Department].
|-
|0002
|BoraEVB/BoraXEVB
|ETH1 interface
|Please refer to [[AN-BELK-006:_Enabling_dual_Gigabit_Ethernet_support_on_BoraEVB/BoraXEVB|this application note]] for second Ethernet interface support.
|-
|0003
|BoraEVB/BoraXEVB
|RTC
|Date/time retention is limited to about 4 hours.
|-
|0004
|BoraEVB/BoraXEVB
|System clock runs slower
|As per [https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841831/CPU+frequency+scaling#Missing%20Features,%20Known%20Issues%20and%20Limitations Xilinx issue], @333MHz (speedgrade -3) system clock is slower then expected
|}
=== BELK 4.0.0 / BXELK 2.0.0 ===
<code>export CC=gcc</code>
|-
|0007
|BoraEVB/BoraXEVB
|System clock runs slower
|As per [https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841831/CPU+frequency+scaling#Missing%20Features,%20Known%20Issues%20and%20Limitations Xilinx issue], @333MHz (speedgrade -3) system clock is slower then expected
|-
|}
{| class="wikitable"
|-
|-
!ID
!Component
!Issue
!Description
|-
|0001
|BoraEVB
|External DDR3 bank (BoraEVB only)
|DDR3 bank can be populated on request. For more details please refer to [mailto:sales@dave.eu Sales Department].
|-
|0002
|BoraEVB/BoraXEVB
|ETH1 interface
|Please refer to [[AN-BELK-006:_Enabling_dual_Gigabit_Ethernet_support_on_BoraEVB/BoraXEVB|this application note]] for second Ethernet interface support.
|-
|0003
|BoraEVB/BoraXEVB
|RTC
|Date/time retention is limited to about 4 hours.
|}
=== BELK/BXELK older releases === For BELK/BXELK older releases information, please click on Expand here below (on the right) <div class="mw-collapsible mw-collapsed"> ==== BELK 3.0.1 / BXELK 1.0.0 ====
Updates: added support for BoraX/BoraXEVB evaluation system
(BoraXEVB only) For LCD interfacing, please refer to [[AN-BELK-004:_Interfacing_BoraEVB/BoraXEVB_to_TFT_LCD_display|this application note]].
===== Known Limitations =====
{| class="wikitable"
|}
==== BELK 3.0.0 ====
Updates:
(BoraXEVB only) For LCD interfacing, please refer to [[AN-BELK-004:_Interfacing_BoraEVB/BoraXEVB_to_TFT_LCD_display|this application note]].
===== Known Limitations =====
{| class="wikitable"
|}
==== BELK 2.2.0 ====
Updates:
# Updated U-Boot and Linux versions
===== Known Limitations =====
{| class="wikitable"
|}
==== BELK 2.1.0 ====
Updates:
# First [[Advanced_use_of_Yocto_build_system_(BELK/BXELK)|Yocto Daisy (1.6) BSP Release]]
===== Known Limitations =====
{| class="wikitable"
|}
==== BELK 2.0.0 ====
Updates:
# Updated supported drivers list (please refer to [[Bora_Embedded_Linux_Kit_(BELK)#BELK_software_components | BELK_software_components]])
===== Known Limitations =====
The following table reports the known limitations of this BELK release: