[PATCH v2 02/18] ARM: ARMv7M: Enlarge vector table to 256 entries

2015-02-20 20:47 GMT+01:00 Uwe Kleine-K?nig [off-list ref]:

On Fri, Feb 20, 2015 at 07:01:01PM +0100, Maxime Coquelin wrote:

quoted

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@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.

That's better indeed.
It will be changed in v3.

quoted

+     .align  9
+#else
+     .align  10
+#endif
+

Other than that:
Acked-by: Uwe Kleine-K?nig <redacted>

Who do you target to apply this series?

I guess it should go through Russell's Patch Tracking System?

Thanks,
Maxime

Best regards
Uwe

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