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>

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 261835b6c6b22266bd0e2120bd5e7c4241101581..22a3cedcb0d8cca133557e2df4b4007e6a854a91 100644 (file)
--- 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