omap4: Add smc API to read AuxCoreBoot0 register

This patch adds a secure API to read AuxCoreBoot0 register to
check the cpu boot status. It also moves the other smc APIs
to common omap44xx-smc.S. This APIs should not be marked as
__INIT because we need these to be present for CPU hotplug

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

3 files changed, 26 insertions, 16 deletions

diff --git a/arch/arm/mach-omap2/omap-headsmp.S b/arch/arm/mach-omap2/omap-headsmp.S
index ef0e7a00dd6c..6ae937a06cc1 100644
--- a/arch/arm/mach-omap2/omap-headsmp.S
+++ b/arch/arm/mach-omap2/omap-headsmp.S
@@ -47,19 +47,3 @@ hold:	ldr	r12,=0x103
         b       secondary_startup
 END(omap_secondary_startup)
 
-
-ENTRY(omap_modify_auxcoreboot0)
-        stmfd   sp!, {r1-r12, lr}
-        ldr     r12, =0x104
-        dsb
-        smc     #0
-        ldmfd   sp!, {r1-r12, pc}
-END(omap_modify_auxcoreboot0)
-
-ENTRY(omap_auxcoreboot_addr)
-        stmfd   sp!, {r2-r12, lr}
-        ldr     r12, =0x105
-        dsb
-        smc     #0
-        ldmfd   sp!, {r2-r12, pc}
-END(omap_auxcoreboot_addr)
diff --git a/arch/arm/mach-omap2/omap44xx-smc.S b/arch/arm/mach-omap2/omap44xx-smc.S
index f61c7771ca47..1980dc31a1a2 100644
--- a/arch/arm/mach-omap2/omap44xx-smc.S
+++ b/arch/arm/mach-omap2/omap44xx-smc.S
@@ -30,3 +30,28 @@ ENTRY(omap_smc1)
         smc     #0
         ldmfd   sp!, {r2-r12, pc}
 END(omap_smc1)
+
+ENTRY(omap_modify_auxcoreboot0)
+        stmfd   sp!, {r1-r12, lr}
+        ldr     r12, =0x104
+        dsb
+        smc     #0
+        ldmfd   sp!, {r1-r12, pc}
+END(omap_modify_auxcoreboot0)
+
+ENTRY(omap_auxcoreboot_addr)
+        stmfd   sp!, {r2-r12, lr}
+        ldr     r12, =0x105
+        dsb
+        smc     #0
+        ldmfd   sp!, {r2-r12, pc}
+END(omap_auxcoreboot_addr)
+
+ENTRY(omap_read_auxcoreboot0)
+        stmfd   sp!, {r2-r12, lr}
+        ldr     r12, =0x103
+        dsb
+        smc     #0
+        mov     r0, r0, lsr #9
+        ldmfd   sp!, {r2-r12, pc}
+END(omap_read_auxcoreboot0)
diff --git a/arch/arm/plat-omap/include/plat/smp.h b/arch/arm/plat-omap/include/plat/smp.h
index 8983d54c4fd2..6a3ff65c0303 100644
--- a/arch/arm/plat-omap/include/plat/smp.h
+++ b/arch/arm/plat-omap/include/plat/smp.h
@@ -30,6 +30,7 @@
 extern void omap_secondary_startup(void);
 extern u32 omap_modify_auxcoreboot0(u32 set_mask, u32 clear_mask);
 extern void omap_auxcoreboot_addr(u32 cpu_addr);
+extern u32 omap_read_auxcoreboot0(void);
 
 /*
  * We use Soft IRQ1 as the IPI