Document the possibility of the kernel being entered in HYP mode.
Signed-off-by: NDave Martin <dave.martin@linaro.org>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>

Currently, the documented kernel entry requirements are not
explicit about whether the kernel should be entered in ARM or
Thumb, leading to an ambiguitity about how to enter Thumb-2
kernels.  As a result, the kernel is reliant on the zImage
decompressor to enter the kernel proper in the correct instruction
set state.

This patch changes the boot entry protocol for head.S and Image to
be the same as for zImage: in all cases, the kernel is now entered
in ARM.

Documentation/arm/Booting is updated to reflect this new policy.

A different rule will be needed for Cortex-M class CPUs as and when
support for those lands in mainline, since these CPUs don't support
the ARM instruction set at all: a note is added to the effect that
the kernel must be entered in Thumb on such systems.
Signed-off-by: NDave Martin <dave.martin@linaro.org>
Acked-by: NNicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

v6: typo fixes
v5: clarified that dtb should be aligned on a 64 bit boundary in RAM.
v3: added details to Documentation/arm/Booting
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NNicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This reverts commit 9830fcd6.

The ARM dt support has not been merged yet; this documentation update
was premature.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

v3: added details to Documentation/arm/Booting
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This corrects some trivial errors in ARM docs and comments,
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!