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authorMaciej W. Rozycki <macro@codesourcery.com>2014-11-15 22:08:23 +0000
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:36 +0100
commitaec711d563c135186639443af1c2f0d8452b9709 (patch)
tree75593bbe6cb4b3161c577f91c7f15e98f88a914a
parent2fabc7d25da725630acdab7aa80be55559ae4702 (diff)
downloadlinux-aec711d563c135186639443af1c2f0d8452b9709.tar.bz2
MIPS: Kconfig: Only allow 32-bit microMIPS builds
Only allow 32-bit microMIPS builds, we're not ready yet for 64-bit microMIPS support. QEMU does have support for the 64-bit microMIPS ISA and with minor tweaks it is possible to have a 64-bit processor emulated there that runs microMIPS code, so despite the lack of actual 64-bit microMIPS hardware there is a way to run 64-bit microMIPS Linux, but it can all be considered early development and we are not there yet. Userland tools are lacking too, e.g. GCC produces bad code: {standard input}: Assembler messages: {standard input}:380: Warning: wrong size instruction in a 16-bit branch delay slot And our build fails early on, so disable the configuration, for the sake of automatic random config checkers if nothing else. Whoever needs to experiment with 64-bit microMIPS support can revert this change easily. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8481/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 0bc8112c5486..d9393963e6d6 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2143,7 +2143,7 @@ config CPU_HAS_SMARTMIPS
here.
config CPU_MICROMIPS
- depends on SYS_SUPPORTS_MICROMIPS
+ depends on 32BIT && SYS_SUPPORTS_MICROMIPS
bool "Build kernel using microMIPS ISA"
help
When this option is enabled the kernel will be built using the