Commit Graph

4 Commits

Author SHA1 Message Date
James Hogan 0b4184c26b metag: avoid unnecessary builtin dtb rebuilds
The builtin .dtb.S intermediate file needs to be marked with .SECONDARY
so that it isn't automatically deleted (which causes it to be
regenerated on every build). Also add *.dtb.S to clean-files so it gets
cleaned up by make clean.

Similarly, if the specified builtin dtb isn't already in dtb-y (e.g.
imported into the tree and specified in CONFIG_METAG_BUILTIN_DTB_NAME)
it too will be treated as an intermediate and deleted automatically
(again causing it to be regenerated on every build), so add it to dtb-y
so it gets added to targets and the dtbs target.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
2013-04-22 11:23:20 +01:00
James Hogan 5633004cc2 metag: Build infrastructure
Add metag build infrastructure.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
2013-03-02 20:09:54 +00:00
James Hogan 29dd78cf0b metag: Device tree
Add device tree files to arch/metag.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Vineet Gupta <vgupta@synopsys.com>
2013-03-02 20:09:22 +00:00
James Hogan 85d9d7a920 metag: Boot
Add boot code for metag. Due to the multi-threaded nature of Meta it is
not uncommon for an RTOS or bare metal application to be started on
other hardware threads by the bootloader. Since there is a single MMU
switch which affects all threads, the MMU is traditionally configured by
the bootloader prior to starting Linux. The bootloader passes a
structure to Linux which among other things contains information about
memory regions which have been mapped. Linux then assumes control of the
local heap memory region.

A kernel arguments string pointer or a flattened device tree pointer can
be provided in the third argument.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
2013-03-02 20:09:17 +00:00