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Could anybody tell me how to boot up a processor in AARCH32 bit mode in Arm V8 and A53 core?

can you please tell me how to boot up a processor in 32 bit mode for Armv8, A53 core using baremetal code?

how can i know it is booted in 32bit mode?

Thanks.

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Martin Weidmann over 7 years ago +2 verified

When the A53 comes out of reset, the initial Execution state (AArch32 or AArch64) is controlled by a signal AA64nAA32 http://infocenter.arm.com/help/topic/com.arm.doc.ddi0500g/BABJAGDF.html This sets...

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0 RanadeepReddy over 7 years ago in reply to Martin Weidmann

Thanks for the reply.
But how to set that configuration signal at the time of reset.i want to boot up in AARCH32 bit mode in baremetal code.

Regards
Rana.
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0 RanadeepReddy over 7 years ago in reply to Martin Weidmann

Thanks for the reply.
But how to set that configuration signal at the time of reset.i want to boot up in AARCH32 bit mode in baremetal code.

Regards
Rana.
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0 42Bastian Schick over 7 years ago in reply to RanadeepReddy

Check you SoC description if the signal is available. If not, just boot in AArch64 and switch.
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