[PATCH 02/14] ARM: ARMv7M: Enlarge vector table to 256 entries
From: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Date: 2015-02-12 17:46:23
Also in:
linux-arch, linux-arm-kernel, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From Cortex-M4 and M7 reference manuals, the nvic supports up to 240
interrupts. So the number of entries in vectors table is 256. This patch adds the missing entries, and change the alignement, so that vector_table remains naturally aligned. Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> --- arch/arm/kernel/entry-v7m.S | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index 8944f49..29a461b 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S@@ -117,9 +117,9 @@ ENTRY(__switch_to) ENDPROC(__switch_to) .data - .align 8 + .align 10 /* - * Vector table (64 words => 256 bytes natural alignment) + * Vector table (256 words => 1024 bytes alignment) */ ENTRY(vector_table) .long 0 @ 0 - Reset stack pointer
@@ -138,6 +138,6 @@ ENTRY(vector_table) .long __invalid_entry @ 13 - Reserved .long __pendsv_entry @ 14 - PendSV .long __invalid_entry @ 15 - SysTick - .rept 64 - 16 - .long __irq_entry @ 16..64 - External Interrupts + .rept 256 - 16 + .long __irq_entry @ 16..256 - External Interrupts .endr
--
1.9.1