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Paul Burton
b6d5e47e67
Probe the CPU interrupt controller & optional Global Interrupt Controller (GIC) using devicetree rather than platform code. Because the bootloader on SEAD3 does not provide a device tree to the kernel & the device tree is always built in, we patch out the GIC node during boot if we detect that a GIC is not present in the system. The appropriate IRQ domain is discovered by platform code setting up device IRQ numbers temporarily. It will be removed by further patches which move the devices towards being probed via device tree. No behavioural change is intended by this patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14047/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
30 lines
686 B
C
30 lines
686 B
C
/*
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* Copyright (C) 2016 Imagination Technologies
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* Author: Paul Burton <paul.burton@imgtec.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef __MIPS_SEAD3_DTSHIM_H__
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#define __MIPS_SEAD3_DTSHIM_H__
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#include <linux/init.h>
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#ifdef CONFIG_MIPS_SEAD3
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extern void __init *sead3_dt_shim(void *fdt);
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#else /* !CONFIG_MIPS_SEAD3 */
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static inline void *sead3_dt_shim(void *fdt)
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{
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return fdt;
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}
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#endif /* !CONFIG_MIPS_SEAD3 */
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#endif /* __MIPS_SEAD3_DTSHIM_H__ */
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