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arch: add OpenRISC architecture support

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Add support for OpenRISC. See here for more details about
OpenRISC http://openrisc.io.

All buildroot included upstream binutils versions are supported.
Gcc support is not upstream, to be able to enable musl C library
support later, we use the branch with musl support.
At the moment it is possible to build a musl based toolchain,
but bootup in Qemu fails.

Gdb is only working to debug bare-metal code, there is no support
for gdbserver/gdb on Linux, yet.

[Peter: drop ?= for GCC_SOURCE]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Tested-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Waldemar Brodkorb
2017-01-25 07:35:07 +01:00
committed by Peter Korsgaard
parent f923eed010
commit a818e29e76
8 changed files with 40 additions and 9 deletions
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5
arch/Config.in.or1k Normal file
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@@ -0,0 +1,5 @@
config BR2_ARCH
default "or1k"
config BR2_ENDIAN
default "BIG"