[PATCH v2 02/18] ARM: ARMv7M: Enlarge vector table to 256 entries
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Fri Feb 20 11:47:56 PST 2015
On Fri, Feb 20, 2015 at 07:01:01PM +0100, Maxime Coquelin wrote:
> From Cortex-M reference manuals, the nvic supports up to 240 interrupts.
> So the number of entries in vectors table is up to 256.
>
> This patch adds a new config flag to specify the number of external interrupts.
> Some ifdeferies are added in order to respect the natural alignment without
> wasting too much space on smaller systems.
>
> Signed-off-by: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
> ---
> arch/arm/kernel/entry-v7m.S | 13 +++++++++----
> arch/arm/mm/Kconfig | 15 +++++++++++++++
> 2 files changed, 24 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
> index 8944f49..68cde36 100644
> --- a/arch/arm/kernel/entry-v7m.S
> +++ b/arch/arm/kernel/entry-v7m.S
> @@ -117,9 +117,14 @@ ENTRY(__switch_to)
> ENDPROC(__switch_to)
>
> .data
> - .align 8
> +#if CONFIG_CPUV7M_NUM_IRQ <= 112
I would have called this CONFIG_CPU_V7M_NUM_IRQ to match the already
existing CPU_V7M symbol.
> + .align 9
> +#else
> + .align 10
> +#endif
> +
Other than that:
Acked-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
Who do you target to apply this series?
Best regards
Uwe
--
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