Hi,
let's assume that I have two projects: 1) an SSL and 2) an application. Both CCES projects include a CCES Blackfin Loader step which points to an initialization file.
When both the SSL and the application are flashed and the system boots (BF70x family), is it possible that only the init code of the SSL gets executed?
(The application is booted in the SSL via adi_rom_boot function.)
If so, how is this mechanism controlled?
Kind regards,
Matthias
Hi Matthias,Regarding,"is it possible that only the init code of the SSL gets executed?">> Yes it is possible. I have attached the one simple LED code for your requirement, This code will turn on the LED4. I have taken the Init code from the below mentioned Installation Path and modified to turn on the LED3. While creating loader file I have used modified init code. So when am booting this application the LED3&LED4 will turn on.Installation Path: Analog Devices\CrossCore Embedded Studio 2.8.2\Blackfin\ldr\init_code\BF70x_Init\BF707_initAccording to your scenario I have add the "asm("JUMP 0;");" after LED3 configuration. So that when am booting the application that booting will stop in init code asm("JUMP 0;"); line.Regarding, "how is this mechanism controlled?">> Please refer EE-374 application note, which describes what an SSL is , how to create loader (LDR) files from DXEs, and how to write LDR files to SPI flash memory. And also example code associated with that. Please find the application note and associated from below link,EE-374 application note: www.analog.com/.../EE374v01.pdfCode: www.analog.com/.../EE374v01.zipFor more information you can also refer the Boot ROM and Booting the Processor section(PageNo:1871 / 2223) in the HRM of ADSP-BF707. Please find the HRM from below link,www.analog.com/.../BF70x_BlackfinProcessorHardwareReference.pdfRegards,Lalitha.S
Hi Lathila,
thank you for my reply. I think my formulation was misleading. Let me correct my question to:
If I use init code in the bootloader and I use init code in the application, does the processor only execute the init code in the bootloader and not in the application?
If so, why? And what makes the processor control it?
If no, I see another effect.
Regards,
Hello Lalitha,
there's currently not really a requirement to have the init code in both, the SSL and the application(s) - but this is the current configuration.
So I was wondering how the DSP would behave if both had init code in it, as this can be set in the CCES project.
If we have init code in both, how does the system behave?
Kind regards,Matthias