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authorMax Filippov <jcmvbkbc@gmail.com>2014-10-04 05:12:27 +0400
committerMax Filippov <jcmvbkbc@gmail.com>2014-10-21 13:28:55 +0400
commit53490121e9ffa3e6314137af016cde8ac83c9bb4 (patch)
treea255f95a198f91c3a4edd24e5858a7a753586200 /arch/xtensa
parenta4f9846da76c854dcd13a5ac00826b599ad09745 (diff)
downloadlinux-53490121e9ffa3e6314137af016cde8ac83c9bb4.tar.xz
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>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/initialize_mmu.h3
-rw-r--r--arch/xtensa/kernel/head.S5
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/xtensa/include/asm/initialize_mmu.h b/arch/xtensa/include/asm/initialize_mmu.h
index 600781edc8a3..cdac5584ec0c 100644
--- 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 aeeb3cc8a410..15a461e2a0ed 100644
--- 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