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arm: bugfix: Move vector table before jumping relocated code

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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>
This commit is contained in:
Tetsuyuki Kobayashi 2012-06-25 02:40:57 +00:00 committed by Albert ARIBAUD
parent 0ec005fe00
commit f8b9d1d30e
1 changed files with 12 additions and 0 deletions
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12
arch/arm/cpu/armv7/start.S
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@ -277,6 +277,18 @@ jump_2_ram:
mcr p15, 0, r0, c7, c10, 4 @ DSB mcr p15, 0, r0, c7, c10, 4 @ DSB
mcr p15, 0, r0, c7, c5, 4 @ ISB mcr p15, 0, r0, c7, c5, 4 @ ISB
#endif #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 ldr r0, _board_init_r_ofs
adr r1, _start adr r1, _start
add lr, r0, r1 add lr, r0, r1