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| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-07-12 14:24:03 +0100 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-07-28 17:19:09 +0200 |
| commit | f510aeae689925a660bff14683eef4147785d271 (patch) | |
| tree | c64b78f6ed747616c80e52c7c20e2508fca652f1 /arch/arm/lib/relocate_64.S | |
| parent | bf433afd60ce2ccd1bec3cf14150323be8272ac3 (diff) | |
| download | u-boot-imx-f510aeae689925a660bff14683eef4147785d271.zip u-boot-imx-f510aeae689925a660bff14683eef4147785d271.tar.gz u-boot-imx-f510aeae689925a660bff14683eef4147785d271.tar.bz2 | |
ARM: HYP/non-sec: allow relocation to secure RAM
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: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'arch/arm/lib/relocate_64.S')
0 files changed, 0 insertions, 0 deletions