diff options
authorThomas Bogendoerfer <tsbogend@alpha.franken.de>2008-03-15 12:28:51 +0100
committerRalf Baechle <ralf@linux-mips.org>2008-04-01 15:46:33 +0100
commit82933342c3b157c93f4b09199bcde8f2e961dff6 (patch)
parenta05e623f63f7ce2d6b334eb3d7ecb449b907b429 (diff)
[MIPS] Check for GCC r10k-cache-barrier support
Check whether gcc supports -mr10-cache-barrier=1 and issue a cleaner error message if not. This option is needed to build working SGI IP28 kernels. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 72097dacabd3..1c62381f5c23 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -482,10 +482,13 @@ endif
# be 16kb aligned or the handling of the current variable will break.
# Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys
-#core-$(CONFIG_SGI_IP28) += arch/mips/sgi-ip22/ arch/mips/arc/arc_con.o
+ifdef CONFIG_SGI_IP28
+ ifeq ($(call cc-option-yn,-mr10k-cache-barrier=1), n)
+ $(error gcc doesn't support needed option -mr10k-cache-barrier=1)
+ endif
core-$(CONFIG_SGI_IP28) += arch/mips/sgi-ip22/
cflags-$(CONFIG_SGI_IP28) += -mr10k-cache-barrier=1 -Iinclude/asm-mips/mach-ip28
-#cflags-$(CONFIG_SGI_IP28) += -Iinclude/asm-mips/mach-ip28
load-$(CONFIG_SGI_IP28) += 0xa800000020004000

Privacy Policy