Embedded forum how to switch from EL3 to El1 inside u-boot before linux kernel?

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how to switch from EL3 to El1 inside u-boot before linux kernel?

dudu8 over 8 years ago

linux requires EL1,however uboot is in EL3 mode.linux is halted.

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Matt Sealey over 8 years ago in reply to dudu8 +1

dudu8, U-Boot should not be attempting to boot the kernel at EL3 if you're just using commands like "bootm" or "bootz" to execute the kernel image. The answer, really, is that U-Boot should be switching...

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0 Sudeep Holla over 8 years ago

Hi,

You can refer ARM Trusted Firmware (ATF). ATF is maintained under github which

includes documentation including the Firmware Design document which describes the

boot flow, and a Porting Guide which may be of use to you.

Regards,

Sudeep
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0 Sudeep Holla over 8 years ago

Hi,

You can refer ARM Trusted Firmware (ATF). ATF is maintained under github which

includes documentation including the Firmware Design document which describes the

boot flow, and a Porting Guide which may be of use to you.

Regards,

Sudeep
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