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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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4
toolchain/toolchain-buildroot/Config.in
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@@ -32,8 +32,8 @@ config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
depends on BR2_arcle || BR2_arceb || BR2_arm || BR2_armeb || \
BR2_bfin || BR2_i386 || BR2_m68k || BR2_microblaze || \
BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el || \
BR2_powerpc || BR2_sh2a || BR2_sh4 || BR2_sh4eb || \
BR2_sparc || BR2_xtensa || BR2_x86_64
BR2_or1k || BR2_powerpc || BR2_sh2a || BR2_sh4 || \
BR2_sh4eb || BR2_sparc || BR2_xtensa || BR2_x86_64
# Unsupported for MIPS R6
depends on !BR2_MIPS_CPU_MIPS32R6 && !BR2_MIPS_CPU_MIPS64R6
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