Difference between revisions of "EFR32xG1x Bootloader"

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(Redirected page to EFR32#EFR32xG1x family)
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#REDIRECT [[EFR32#EFR32xG1x_family]]
__NOTOC__
 
==Introduction==
 
On EFR32xG1x series devices, a bootloader is executed after reset. The bootloader is stored in a separate section in the ''Information'' memory space of the device. The section is called ''Bootloader (BL)'' and located at memory address 0x0FE10000. The size depends on the device. Factory-fresh devices are pre-programmed with a simple bootloader which jumps to the start of the internal flash. However, customers are allowed to exchange the bootloader with a customized one which supports more complex tasks like SPI flash, crypto, etc... Therefore, the J-Link software supports erasing as well as programming of this section.
 
 
==Problem==
 
When issueing a chip erase, the bootloader section and therefore the bootloader will be erased as well. As a result, the device will no longer boot as no valid bootloader resides in the bootloader section.
 
 
==Solution==
 
Below, two different solutions are presented. Apart from this, the J-Link software may be adapted in the future to not erase the bootloader section by default.
 
#Do not perform a chip erase. Basically a separate is not necessary as the J-Link software always performs an implicit erase prior programming if required.
 
#Program the bootloader (see '''Files''' below) as part of the application or in a separate step after programming the application
 
 
==Files==
 
* [[:File:Dummy_btl_efr32xg1x.mot|File: EFR32xG1x default bootloader]]
 

Latest revision as of 17:26, 26 March 2020