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authorFranck Bui-Huu <fbuihuu@gmail.com>2007-02-02 17:41:47 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-02-22 00:50:44 +0000
commit9693a85378b590cc7a4aa2db2174422585c7c8c4 (patch)
tree43d031f8e555d9276e68bdb158bd264c2d260346 /arch/mips/Makefile
parent9654640d0af8f2de40ff3807d3695109d3463f54 (diff)
[MIPS] Add basic SMARTMIPS ASE support
This patch adds trivial support for SMARTMIPS extension. This extension is currently implemented by 4KS[CD] CPUs. Basically it saves/restores ACX register, which is part of the SMARTMIPS ASE, when needed. This patch does *not* add any support for Smartmips MMU features. Futhermore this patch does not add explicit support for 4KS[CD] CPUs since they are respectively mips32 and mips32r2 compliant. So with the current processor configuration, a platform that has such CPUs needs to select both configs: CPU_HAS_SMARTMIPS SYS_HAS_CPU_MIPS32_R[12] This is due to the processor configuration which is mixing up all the architecture variants and the processor types. The drawback of this, is that we currently pass '-march=mips32' option to gcc when building a kernel instead of '-march=4ksc' for 4KSC case. This can lead to a kernel image a little bit bigger than required. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Makefile')
-rw-r--r--arch/mips/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index c68b5d3e5d1..92bca6ad6ab 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -103,6 +103,8 @@ predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
+cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips)
+
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer