* cdl/hal_arm.cdl: Add CDL to control whether both IRQs and FIQs are disabled in critical sections, or only IRQs. The default is to disable both and translate any FIQs into IRQs for delivery. The alternative is for FIQs to essentially exist outside eCos. * include/hal_arch.h (CPSR_THREAD_INITIAL): * include/hal_intr.h (CPSR_INTR_MASK, HAL_*_INTERRUPTS) (HAL_*_FIQ): Add definitions for separating FIQ from IRQ. * src/hal_mk_defs.c (main): * src/vectors.S (start, FIQ, IRQ, spurious_IRQ): (hal_*_interrupts, hal_*_FIQ, __fiq_stack_base): Add support for separating FIQ from IRQ in critical section processing.

--- a/packages/hal/arm/arch/current/include/hal_arch.h
+++ b/packages/hal/arm/arch/current/include/hal_arch.h
@@ -88,8 +88,11 @@
 #define CPSR_MODE_BITS          0x1F
 
 #define CPSR_INITIAL (CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_SUPERVISOR_MODE)
+#ifdef CYGOPT_HAL_ARM_FIQ_DISABLE
 #define CPSR_THREAD_INITIAL (CPSR_SUPERVISOR_MODE)
-
+#else
+#define CPSR_THREAD_INITIAL (CPSR_SUPERVISOR_MODE|CPSR_FIQ_DISABLE)
+#endif
 //
 // Vector table offsets
 //