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authorTetsuyuki Kobayashi <koba@kmckk.co.jp>2012-06-25 02:40:57 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:33 +0200
commitf8b9d1d30ece82abccefac3c860c06f8b7da8fbb (patch)
treed036eff5ceec6389b5962125aad660eb91d843c3
parent0ec005fe00b9057fd16531f44146c9e363bb7861 (diff)
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arm: bugfix: Move vector table before jumping relocated code
Interrupts and exceptions doesn't work in relocated code. It badly use IRQ_STACK_START_IN in rom area as interrupt stack. It is because the vecotr table is not moved to ram area. This patch moves vector table before jumping relocated code. Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp> Tested-by: Tom Rini <trini@ti.com>
-rw-r--r--arch/arm/cpu/armv7/start.S12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 261835b..22a3ced 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -277,6 +277,18 @@ jump_2_ram:
mcr p15, 0, r0, c7, c10, 4 @ DSB
mcr p15, 0, r0, c7, c5, 4 @ ISB
#endif
+/*
+ * Move vector table
+ */
+#if !defined(CONFIG_TEGRA2)
+#if !(defined(CONFIG_OMAP44XX) && defined(CONFIG_SPL_BUILD))
+ /* Set vector address in CP15 VBAR register */
+ ldr r0, =_start
+ add r0, r0, r9
+ mcr p15, 0, r0, c12, c0, 0 @Set VBAR
+#endif
+#endif /* !Tegra2 */
+
ldr r0, _board_init_r_ofs
adr r1, _start
add lr, r0, r1