Imx6solox jump to boot rom

[niranjanbc]

Hi 

i have binary file that tests ddr memory running from internal ram. This binary is loaded by u-boot into internal ram.

once memory test is complete, it jumps to boot rom. like below. 

void main()

{

void (*bootRom)(void) = 0x000;

while(1)

 {

   ram_test();

    (*bootRom)();

 }

}

after jumping to boot rom, u-boot never starts, this is happening on one of our board remaining work fine, not all doing this.

is this chip issue.

all i see in trace is below, when i try to find out with debugger.

PC is at BFF53004

can anyone let me know what is this actually location specifies.

[niranjanbc]

but this doesnt answer my question, then i should see same behavior on all the boards.

why am seeing on just this board.  

[Yuri]

Hello,

   Boot ROM code is intended to run after reset.

   It is highly recommended to follow i.MX validation design and NXP sponsored third-party

designs, that  have been designed to remove power (voltage source) to all components on

the board in the event of a processor reset. This avoids having to determine if a component

critical to rebooting the processor is in the necessary state to support a reboot.

Have a great day,

Yuri

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[niranjanbc]

why is this happening with only one or two board, remaining boards are working fine.

what components boot rom is dependent on. 

[Yuri]

Hello,

  Perhaps it makes sense to use JTAG debugging to find the source of the problem for

the non-working board, but this will not guarantee issues absence for other (third)

boards.  

Regards,

Yuri.

[niranjanbc]

Hi Yuri,

i used debugger, this what i see.

[Yuri]

Hello,

   Looks like the system hangs in boot ROM; as was mentioned, the boot ROM

is intended to work after reset. It is not intended to be called (or jumped) from 

a user code.

Regards,

Yuri.