1 files changed, 21 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap-headsmp.S b/arch/arm/mach-omap2/omap-headsmp.S
index 503ac777a2ba..502e3135aad3 100644
--- a/arch/arm/mach-omap2/omap-headsmp.S
+++ b/arch/arm/mach-omap2/omap-headsmp.S
@@ -19,6 +19,27 @@
 #include <linux/init.h>
 
         __CPUINIT
+
+/* Physical address needed since MMU not enabled yet on secondary core */
+#define AUX_CORE_BOOT0_PA                       0x48281800
+
+/*
+ * OMAP5 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 this flag using a hardware
++ * register AuxCoreBoot0.
+ */
+ENTRY(omap5_secondary_startup)
+wait:   ldr     r2, =AUX_CORE_BOOT0_PA  @ read from AuxCoreBoot0
+        ldr     r0, [r2]
+        mov     r0, r0, lsr #5
+        mrc     p15, 0, r4, c0, c0, 5
+        and     r4, r4, #0x0f
+        cmp     r0, r4
+        bne     wait
+        b       secondary_startup
+END(omap5_secondary_startup)
 /*
  * OMAP4 specific entry point for secondary CPU to jump from ROM
  * code.  This routine also provides a holding flag into which