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2008-03-20 Till Straumann <strauman@slac.stanford.edu>

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* new-exceptions/bspsupport/irq.c: don't disable irqs
	at the interrupt controller (PIC) during initialization -- this
	caused problems where some BSPs's BSP_disable_irq_at_pic() routine
	did not ignore IRQ lines associated with cascaded PICs.
	Rely on the BSP (BSP_setup_the_pic()) to provide a good
	initial setup.
This commit is contained in:
Till Straumann
2008-03-20 19:08:52 +00:00
parent b0fc2ec5a7
commit d56c6783e5
2 changed files with 16 additions and 0 deletions
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9
c/src/lib/libcpu/powerpc/ChangeLog
View File

@@ -1,3 +1,12 @@
2008-03-20 Till Straumann <strauman@slac.stanford.edu>
* new-exceptions/bspsupport/irq.c: don't disable irqs
at the interrupt controller (PIC) during initialization -- this
caused problems where some BSPs's BSP_disable_irq_at_pic() routine
did not ignore IRQ lines associated with cascaded PICs.
Rely on the BSP (BSP_setup_the_pic()) to provide a good
initial setup.
2008-03-13 Till Straumann <strauman@slac.stanford.edu> 2008-03-13 Till Straumann <strauman@slac.stanford.edu>
* new-exceptions/bspsupport/ppc_exc_asm_macros.h, * new-exceptions/bspsupport/ppc_exc_asm_macros.h,

7
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/irq.c
View File

@@ -353,7 +353,14 @@ int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config)
/* at least one handler registered */ /* at least one handler registered */
BSP_enable_irq_at_pic(i); BSP_enable_irq_at_pic(i);
} else { } else {
/* Do NOT disable; there might be boards with cascaded
* interrupt controllers where the BSP (incorrectly) does
* not ignore the cascaded interrupts in BSP_disable_irq_at_pic()!
* Instead, we rely on BSP_setup_the_pic() for a good
* initial configuration.
*
BSP_disable_irq_at_pic(i); BSP_disable_irq_at_pic(i);
*/
} }
} }