xtensa: move vecbase SR initialization to _startup

Instead of initializing vecbase in initialize_mmu macro, which may be
expanded either in Image.elf reset vector hadler or in the kernel
head.S, both times only when CONFIG_MMU is enabled, do this
initialization once in _startup function.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/include/asm/initialize_mmu.h b/arch/xtensa/include/asm/initialize_mmu.h
index 600781e..cdac558 100644 (file)
--- a/arch/xtensa/include/asm/initialize_mmu.h
+++ b/arch/xtensa/include/asm/initialize_mmu.h
@@ -141,9 +141,6 @@
        jx      a4
 
 1:
-       movi    a2, VECBASE_RESET_VADDR
-       wsr     a2, vecbase
-
        /* Step 5: remove temporary mapping. */
        idtlb   a7
        iitlb   a7

diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index aeeb3cc..15a461e 100644 (file)
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -112,6 +112,11 @@ ENTRY(_startup)
 
        movi    a0, 0
 
+#if XCHAL_HAVE_VECBASE
+       movi    a2, VECBASE_RESET_VADDR
+       wsr     a2, vecbase
+#endif
+
        /* Clear debugging registers. */
 
 #if XCHAL_HAVE_DEBUG