Imx6solox jump to boot rom

cancel
Showing results for 
Search instead for 
Did you mean: 

Imx6solox jump to boot rom

1,005 Views
niranjanbc
Contributor IV

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.

pastedImage_1.png

PC is at BFF53004

pastedImage_2.png

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

0 Kudos
6 Replies

568 Views
niranjanbc
Contributor IV

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

why am seeing on just this board.  

0 Kudos

568 Views
Yuri
NXP TechSupport
NXP TechSupport

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

 

------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

0 Kudos

568 Views
niranjanbc
Contributor IV

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

what components boot rom is dependent on. 

0 Kudos

568 Views
Yuri
NXP TechSupport
NXP TechSupport

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.

0 Kudos

568 Views
niranjanbc
Contributor IV

Hi Yuri,

i used debugger, this what i see.

pastedImage_1.png

pastedImage_2.png

0 Kudos

568 Views
Yuri
NXP TechSupport
NXP TechSupport

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.

0 Kudos