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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2011-02-22 21:07:37 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-02-23 22:27:52 +0100
commitda6b737b9ab768dd06bb4b0395131d10e524cf83 (patch)
tree5ae44f22f3be802f2a9d3c09fd068f394efbd0a6 /arch/x86/kernel/irq.c
parentf1c2b357148ec27fcc6ce0992211209a0ea20d8f (diff)
x86: Add device tree support
This patch adds minimal support for device tree on x86. The device tree blob is passed to the kernel via setup_data which requires at least boot protocol 2.09. Memory size, restricted memory regions, boot arguments are gathered the traditional way so things like cmd_line are just here to let the code compile. The current plan is use the device tree as an extension and to gather information which can not be enumerated and would have to be hardcoded otherwise. This includes things like - which devices are on this I2C/SPI bus? - how are the interrupts wired to IO APIC? - where could my hpet be? Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: sodaville@linutronix.de Cc: devicetree-discuss@lists.ozlabs.org LKML-Reference: <1298405266-1624-3-git-send-email-bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/irq.c')
-rw-r--r--arch/x86/kernel/irq.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 387b6a0c9e81..753136003af1 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -276,15 +276,6 @@ void smp_x86_platform_ipi(struct pt_regs *regs)
EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
-#ifdef CONFIG_OF
-unsigned int irq_create_of_mapping(struct device_node *controller,
- const u32 *intspec, unsigned int intsize)
-{
- return intspec[0];
-}
-EXPORT_SYMBOL_GPL(irq_create_of_mapping);
-#endif
-
#ifdef CONFIG_HOTPLUG_CPU
/* A cpu has been removed from cpu_online_mask. Reset irq affinities. */
void fixup_irqs(void)