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authorMarc Zyngier <marc.zyngier@arm.com>2011-11-08 13:07:36 +0000
committerDavid Brown <davidb@codeaurora.org>2011-11-08 08:58:28 -0800
commiteca55f4d9c1d918c2aa95fb8a73a34e2ba8a1b11 (patch)
tree72f0aa283270bd13d34a928a75d37a1bcb618f47 /arch/arm/mach-msm
parent47a6770ac6cd0d28f14dd9e1b17705abe6f05e41 (diff)
ARM: msm: fix compilation flags for MSM_SCM
CONFIG_MSM_SCM uses the smc instruction, which with some toolchains requires a ".arch_extension" directive. Cc: David Brown <davidb@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'arch/arm/mach-msm')
-rw-r--r--arch/arm/mach-msm/Makefile2
-rw-r--r--arch/arm/mach-msm/scm.c3
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 4285dfd80b6..4ad3969b988 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -15,6 +15,8 @@ obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o
obj-$(CONFIG_MSM_SMD) += last_radio_log.o
obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o
+CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
+
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_SMP) += headsmp.o platsmp.o
diff --git a/arch/arm/mach-msm/scm.c b/arch/arm/mach-msm/scm.c
index 232f97a0450..bafabb50258 100644
--- a/arch/arm/mach-msm/scm.c
+++ b/arch/arm/mach-msm/scm.c
@@ -180,6 +180,9 @@ static u32 smc(u32 cmd_addr)
__asmeq("%1", "r0")
__asmeq("%2", "r1")
__asmeq("%3", "r2")
+#ifdef REQUIRES_SEC
+ ".arch_extension sec\n"
+#endif
"smc #0 @ switch to secure world\n"
: "=r" (r0)
: "r" (r0), "r" (r1), "r" (r2)