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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2011-02-22 21:07:40 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-02-23 22:27:53 +0100
commit3879a6f32948330782889cebc4d74c4f2316c676 (patch)
treea3e8b6904eea8593e72ff9b52e2ce4c5697f60da /arch/x86/kernel/irqinit.c
parent19c4f5f7f7e9c5db89a91627af2a426cfb5568de (diff)
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x86: dtb: Add early parsing of IO_APIC
APIC and IO_APIC have to be added to the system early because native_init_IRQ() requires it. In order to obtain the address of the ioapic the device tree has to be unflattened so of_address_to_resource() works. The device tree is relocated to ensure it is always covered by the kernel mapping. That way the boot loader does not have to make any assumptions about kernel's memory layout. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: sodaville@linutronix.de Cc: devicetree-discuss@lists.ozlabs.org Cc: Dirk Brandewie <dirk.brandewie@gmail.com> LKML-Reference: <1298405266-1624-6-git-send-email-bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/irqinit.c')
-rw-r--r--arch/x86/kernel/irqinit.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index c752e973958d..4cadf8688dbd 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -25,6 +25,7 @@
#include <asm/setup.h>
#include <asm/i8259.h>
#include <asm/traps.h>
+#include <asm/prom.h>
/*
* ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts:
@@ -243,7 +244,7 @@ void __init native_init_IRQ(void)
set_intr_gate(i, interrupt[i-FIRST_EXTERNAL_VECTOR]);
}
- if (!acpi_ioapic)
+ if (!acpi_ioapic && !of_ioapic)
setup_irq(2, &irq2);
#ifdef CONFIG_X86_32