• Marc Zyngier's avatar
    ARM: HYP/non-sec: allow relocation to secure RAM · f510aeae
    Marc Zyngier authored
    The current non-sec switching code suffers from one major issue:
    it cannot run in secure RAM, as a large part of u-boot still needs
    to be run while we're switched to non-secure.
    
    This patch reworks the whole HYP/non-secure strategy by:
    - making sure the secure code is the *last* thing u-boot executes
      before entering the payload
    - performing an exception return from secure mode directly into
      the payload
    - allowing the code to be dynamically relocated to secure RAM
      before switching to non-secure.
    
    This involves quite a bit of horrible code, specially as u-boot
    relocation is quite primitive.
    Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    Acked-by: default avatarIan Campbell <ijc@hellion.org.uk>
    f510aeae
secure.h 640 Bytes