topic LPC54102 custom bootloader Cm0 Slave issue in LPC Microcontrollers

LPC54102 custom bootloader Cm0 Slave issue

eu_mtaverna — Tue, 31 Jan 2023 15:49:07 GMT

Hi all,

I'm going to test my custom Bootloader on LPC54102 in order to let the system to be upgraded on field.

My custom bootloader seems to works when jump to a single core application.

An issue occour when the custom bootloader tried to jump to a dual core application, the CM4 core semms to work but the CM0 core don't starts. I have already check the spaddr addres and resetaddr on boot_multicore_slave() functions and seems to be OK.

I also check the RAM region of LPC where the slave application is stored and seems to be OK.

Can anyone help me in order to fix?

Thanks in advance.

Re: LPC54102 custom bootloader Cm0 Slave issue

Alice_Yang — Wed, 15 Feb 2023 08:28:42 GMT

Hello @eu_mtaverna

Please debug step by step to check it crash or stop in which code?

Alice

Re: LPC54102 custom bootloader Cm0 Slave issue

eu_mtaverna — Thu, 16 Feb 2023 13:30:02 GMT

Hello Alice,

Thanks for replay, follow explanation of my issue:

1)The Bootloader starts correctly and jump to the Master application.

2)The Master aplication starts, configure his pheripherals and runs correctly.

3) When Master application launch boot_multicore_slave() function the issue appear, follow the functions sequence on Master Application:

boot_multicore_slave()

Chip_CPU_CM0Boot((uint32_t *)resetaddr, (uint32_t *)spaddr)

When this function resets slave core and enables the slave clock the go to a fault unknowed condition.......

Another thing, I noted that in the Chip_CPU_CM0Boot function the *CPSTACK and *CPBOOT are filled with the correct CM0 Slave Stack Address and entry point Address.

Also if I check the absolute memory address of *CPSTACK (SYSCON_BASE+0x308) and *CPBOOT (SYSCON_BASE+0x304) these values are correct.

Otherwise in the Slave Registers view the sp is setted to 0x0 and pc to 0x030000ee, why?

Any idea? There are known issue about secure bootloader and dual core projects?

Thanks in advance.

Re: LPC54102 custom bootloader Cm0 Slave issue

eu_mtaverna — Mon, 06 Mar 2023 14:43:43 GMT

Anyone can help me about the bootloader issue??