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Commit 82933342 authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Ralf Baechle
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[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: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent a05e623f

arch/mips/Makefile

+5 −2
Original line number Diff line number Diff line
@@ -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

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



#