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→How to configure the system for microSD boot
{{Applies To Bora}}
{{Applies To BoraX}}
{{Applies To BoraLite}}
{{InfoBoxBottom}}
|[[Bora_Embedded_Linux_Kit_(BELK)#BELK_software_components|3.0.0]]
|First release
|-
|2.0.0
|December 2016
|BELK 3.0.1 / BXELK 1.0.0
|Added information about new kits
|-
|3.0.0
|July 2017
|BELK 4.0.0 / BXELK 2.0.0
|Added information about new kits
|-
|}
<section begin=BELK/>=Introduction=System boot and recovery via microSD card==BELK provides a bootable microSD that can be used not only to quickly start the system, but also as a recovery method in case the primary boot device (eg. QSPI NOR flash) gets erased or corrupted. The following sections describe how to create a bootable SD card and how to configure the system for booting from SD.[[BORA_SOM/BELK-L/Deployment/Restoring_U-Boot_on_NOR_flash|This article]], for example, shows how to make use of such a card to restore the U-Boot image onto the NOR flash. {{ImportantMessage|text=It is worth remembering that the bootable microSD card described in this article is not configured to perform a full boot sequence, including the operating system bootstrap. The bootable microSD card delivered along with the kit is set up to do a full bootstrap sequence, instead. For more details, please refer to [[Working_with_the_Yocto_build_system#bootscript|this section]].}} ===How to create a bootable MicroSD microSD card=======BELK <= 3.0.2 / BXELK <= 1.0.1====This section describes how to create a new bootable microSD card from scratchfor '''BELK <= 3.0.2''' and '''BXELK <= 1.0.1'''.
The following components must be available:
*FSBL built with Vivado 2014.4 as described [[Creating_and_building_example_Vivado_project_(BORA_SOM/BELK)-L/Development/Creating_and_building_a_Vivado_example|here]]*U-boot built in elf format, as described in [[BORA_SOM/BELK-L/Development/Building_U-Boot_(BELK)Boot|here]]
*FPGA bitstream (optional).
The procedure is the following:
*copy the <code>boot.bin</code> file to the microSD card FAT32 partition.
====BELK-4.0.0 / BXELK-2.0.0====This section describes how to create a new bootable microSD card from scratch for '''BELK-4.0.0''' and '''BXELK-2.0.0'''.The following components must be available:*U-boot SPL and U-boot second stage built as described in [[BORA_SOM/BELK-L/Development/Building_U-Boot|here]]*FPGA bitstream (optional).The procedure is the following:*on a PC, format the microSD card creating a FAT32 partition*copy the following files to the microSD card FAT32 partition:** U-boot SPL: <code>boot.bin</code>** U-boot second stage: <code>u-boot.img</code>** Fpga bitstream .bit (optional): <code>fpga.bit</code> ===How to configure the system for microSD boot===For BoraBORA /BoraEVB BORA Evaluation kit systems please refer to [[BoraEVB#Boot_mode_selection_BORA_SOM/BORA_Evaluation_Kit/Getting_started/Boot_Configurations|this link]]. For BORA Xpress/ BORA xpress Evaluation kit systems please refer to [[BORA_Xpress_SOM/BORA_Xpress_Evaluation_Kit/Getting_started/Boot_Configurations|this link]]. For BORA Lite Evaluation kit systems please refer to [[BORA_Lite_SOM/BORA_Lite_Evaluation_Kit/Getting_started/Boot_Configurations|this link]]. {{ImportantMessage|text=In case the microSD card provided along with the kit is used, the Programmable Logic is automatically programmed with the [[BORA_SOM/BELK-_S5L/Development/Creating_and_building_a_Vivado_example|this pageexample design]]during the boot process.}}<section end=BELK/>