[PATCH] ARM: remove some entry initialisation asm code

Convert the trivial vector entry initialisation code to C code.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

1 files changed, 9 insertions, 2 deletions

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 6e31718f6008..0078aeb85737 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -578,9 +578,16 @@ EXPORT_SYMBOL(abort);
 
 void __init trap_init(void)
 {
-        extern void __trap_init(void);
+        extern char __stubs_start[], __stubs_end[];
+        extern char __vectors_start[], __vectors_end[];
 
-        __trap_init();
+        /*
+         * Copy the vectors and stubs (in entry-armv.S) into the
+         * vector page, mapped at 0xffff0000, and ensure these are
+         * visible to the instruction stream.
+         */
+        memcpy((void *)0xffff0000, __vectors_start, __vectors_end - __vectors_start);
+        memcpy((void *)0xffff0200, __stubs_start, __stubs_end - __stubs_start);
         flush_icache_range(0xffff0000, 0xffff0000 + PAGE_SIZE);
         modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
 }