Commit 82933342 authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Ralf Baechle

[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
Signed-off-by: default avatarThomas Bogendoerfer <>
Signed-off-by: default avatarRalf Baechle <>
parent a05e623f
......@@ -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-$(CONFIG_SGI_IP28) += arch/mips/sgi-ip22/ arch/mips/arc/arc_con.o
ifeq ($(call cc-option-yn,-mr10k-cache-barrier=1), n)
$(error gcc doesn't support needed option -mr10k-cache-barrier=1)
core-$(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
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