OMAP4: AuxCoreBoot registers only accessible in secure mode

The AuxCoreBoot0 and AuxCoreBoot1 can be only accessed in secure
mode. Replace the current code with secure monitor API's to access/modify
these registers.

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

1 files changed, 27 insertions, 8 deletions

diff --git a/arch/arm/mach-omap2/omap-headsmp.S b/arch/arm/mach-omap2/omap-headsmp.S
index 4afadba09477..aa3f65c2ac97 100644
--- a/arch/arm/mach-omap2/omap-headsmp.S
+++ b/arch/arm/mach-omap2/omap-headsmp.S
@@ -27,20 +27,39 @@
  * OMAP4 specific entry point for secondary CPU to jump from ROM
  * code.  This routine also provides a holding flag into which
  * secondary core is held until we're ready for it to initialise.
- * The primary core will update the this flag using a hardware
- * register AuxCoreBoot1.
+ * The primary core will update this flag using a hardware
+ * register AuxCoreBoot0.
  */
 ENTRY(omap_secondary_startup)
-        mrc     p15, 0, r0, c0, c0, 5
-        and     r0, r0, #0x0f
-hold:   ldr     r1, =OMAP4_AUX_CORE_BOOT1_PA    @ read from AuxCoreBoot1
-        ldr     r2, [r1]
-        cmp     r2, r0
+hold:   ldr     r12,=0x103
+        dsb
+        smc                             @ read from AuxCoreBoot0
+        mov     r0, r0, lsr #9
+        mrc     p15, 0, r4, c0, c0, 5
+        and     r4, r4, #0x0f
+        cmp     r0, r4
         bne     hold
 
         /*
-         * we've been released from the cpu_release,secondary_stack
+         * we've been released from the wait loop,secondary_stack
          * should now contain the SVC stack for this core
          */
         b       secondary_startup
+END(omap_secondary_startup)
 
+
+ENTRY(omap_modify_auxcoreboot0)
+        stmfd   sp!, {r1-r12, lr}
+        ldr     r12, =0x104
+        dsb
+        smc
+        ldmfd   sp!, {r1-r12, pc}
+END(omap_modify_auxcoreboot0)
+
+ENTRY(omap_auxcoreboot_addr)
+        stmfd   sp!, {r2-r12, lr}
+        ldr     r12, =0x105
+        dsb
+        smc
+        ldmfd   sp!, {r2-r12, pc}
+END(omap_auxcoreboot_addr)