Since commit de39dc71625d ("arm: armv7-a: Compile and tune for armv7-a instead of armv5") is used -march=armv7-a option for Omap3 platforms.
With directive ".arch_extension sec" it is possible for -march=armv7-a to directly use ARM SMC instruction.
So enable ".arch_extension sec" in Omap3 lowlevel_init.S and replace hand assembled ".word 0xe1600071" by "SMC #1".
Since commit 51d063865064 ("arm: omap-common: add secure smc entry") same pattern is already used in arch/arm/cpu/armv7/omap-common/lowlevel_init.S.
Signed-off-by: Pali Rohár pali@kernel.org --- arch/arm/mach-omap2/omap3/lowlevel_init.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-omap2/omap3/lowlevel_init.S b/arch/arm/mach-omap2/omap3/lowlevel_init.S index ab7cdcf3d42e..1ab9472e1987 100644 --- a/arch/arm/mach-omap2/omap3/lowlevel_init.S +++ b/arch/arm/mach-omap2/omap3/lowlevel_init.S @@ -15,13 +15,14 @@ #include <asm/arch/clocks_omap3.h> #include <linux/linkage.h>
+.arch_extension sec + /* * Funtion for making PPA HAL API calls in secure devices * Input: * R0 - Service ID * R1 - paramer list */ -/* TODO: Re-evaluate the comment at the end regarding armv5 vs armv7 */ ENTRY(do_omap3_emu_romcode_call) PUSH {r4-r12, lr} @ Save all registers from ROM code! MOV r12, r0 @ Copy the Secure Service ID in R12 @@ -32,8 +33,7 @@ ENTRY(do_omap3_emu_romcode_call) MOV r6, #0xFF @ Indicate new Task call mcr p15, 0, r0, c7, c10, 4 @ DSB mcr p15, 0, r0, c7, c10, 5 @ DMB - .word 0xe1600071 @ SMC #1 to call PPA service - hand assembled - @ because we use -march=armv5 + SMC #1 @ Call PPA service POP {r4-r12, pc} ENDPROC(do_omap3_emu_romcode_call)