How to bypass ROM bootloader on AM335x.

Rimidalv

Other Parts Discussed in Thread: AM3359

Hello!

I would like to debug bare-metal application running from internal SRAM (0x402F0400 - 0x402FFFFF) on Sitara AM3359. I have managed to load my test program into the SRAM using jtag adapter and checked that program loads properly. When I start my program (with PC set to address 0x402F0400) it inevitably jumps to boot ROM code and dead loops at address 0x00020080. Is it possible to bypass ROM bootloader and start my program from the internal SRAM somehow? I have read TRM chapter 26 about initialization (specifically SYSBOOT configuration pins) but have not found any relevant information.

Thank you in advance,

Rimidalv

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

This should be possible from CCS. It seems that you are somehow resetting the processor. Try asking in the CCS forum: http://e2e.ti.com/support/development_tools/code_composer_studio/default.aspx.

0 Rimidalv over 11 years ago in reply to Biser Gatchev-XID

Prodigy 80 points

I don't use CCS but arm-gcc toolchain under linux and J-Link adapter through JLinkGDBServer. Maybe something is wrong with my .gdbinit file. I will recheck it again. Anyway thank you for the answer - it points me to a right direction.

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How to bypass ROM bootloader on AM335x.