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booting linaro kernel in secure mode

Note: This was originally posted on 20th December 2011 at http://forums.arm.com

Hi,

Is it possible to boot Linaro kernel in secure mode? I am trying to modify the ACTLR register but it is write-ignore. I am using Snowball board and booting Linux from u-boot.

Thanks

Jerry Fan over 12 years ago

Note: This was originally posted on 21st December 2011 at http://forums.arm.com

Maybe you can try freescale's i.MX serial product, such as i.mx53-qsb development board. The ROM code with the i.mx53 boot the board in secure world.
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Peter Harris over 12 years ago

Note: This was originally posted on 20th December 2011 at http://forums.arm.com

This is nothing really to do with the kernel - it's going to depend on the boot infrastructure in the device - I assume by the time you get to u-boot the CPU has already been switched across to non-secure by the first level boot in ROM.

You may get more luck asking on the Snowball forums.

Iso
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