On Mon, Jun 25, 2012 at 09:40:57PM +0900, Tetsuyuki Kobayashi wrote: > 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 <k...@kmckk.co.jp> > --- > arch/arm/cpu/armv7/start.S | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S > index 52f7f6e..5098f7b 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
I think this code should get boot tested on a few platforms to make sure it's OK. As such, I've tried on am335x and omap3 and they're still fine. Tested-by: Tom Rini <tr...@ti.com> -- Tom
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