libpayload: Add comment about ARM64 exception stack
Change-Id: I8b74cbf6bdde32c90ad0510e14e899711269e57f Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: https://review.coreboot.org/14075 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
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@ -83,6 +83,10 @@ SECTIONS
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. = ALIGN(16);
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_stack = .;
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/* Exception stack. Having a separate exception stack
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* allows us to have later stages running in non-EL3 levels.
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*/
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_exc_estack = .;
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. += STACK_SIZE;
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. = ALIGN(16);
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