armv7: setup vector

The vector is not correctly setup in armv7 except for OMAP3.
Correcting this.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Signed-off-by: Aneesh V <aneesh@ti.com>

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index db8e9d2..f17763f 100644 (file)
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -32,6 +32,7 @@
 #include <asm-offsets.h>
 #include <config.h>
 #include <version.h>
+#include <asm/system.h>
 
 .globl _start
 _start: b      reset
@@ -143,6 +144,22 @@ reset:
        orr     r0, r0, #0xd3
        msr     cpsr,r0
 
+/*
+ * Setup vector:
+ * (OMAP4 spl TEXT_BASE is not 32 byte aligned.
+ * Continue to use ROM code vector only in OMAP4 spl)
+ */
+#if !(defined(CONFIG_OMAP44XX) && defined(CONFIG_SPL_BUILD))
+       /* Set V=0 in CP15 SCTRL register - for VBAR to point to vector */
+       mrc     p15, 0, r0, c1, c0, 0   @ Read CP15 SCTRL Register
+       bic     r0, #CR_V               @ V = 0
+       mcr     p15, 0, r0, c1, c0, 0   @ Write CP15 SCTRL Register
+
+       /* Set vector address in CP15 VBAR register */
+       ldr     r0, =_start
+       mcr     p15, 0, r0, c12, c0, 0  @Set VBAR
+#endif
+
 #if defined(CONFIG_OMAP34XX)
        /* Copy vectors to mask ROM indirect addr */
        adr     r0, _start              @ r0 <- current position of code