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ACPI, x86/boot: Split out acpi_generic_reduce_hw_init() and export
This is a preparation patch to allow override the hardware reduced initialization on ACPI enabled platforms. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-acpi@vger.kernel.org Link: http://lkml.kernel.org/r/20180220180506.65523-1-andriy.shevchenko@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -140,6 +140,8 @@ static inline u64 acpi_arch_get_root_pointer(void)
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return x86_init.acpi.get_root_pointer();
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}
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void acpi_generic_reduced_hw_init(void);
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#else /* !CONFIG_ACPI */
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#define acpi_lapic 0
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@ -149,6 +151,8 @@ static inline void acpi_noirq_set(void) { }
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static inline void acpi_disable_pci(void) { }
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static inline void disable_acpi(void) { }
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static inline void acpi_generic_reduced_hw_init(void) { }
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#endif /* !CONFIG_ACPI */
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#define ARCH_HAS_POWER_INIT 1
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@ -1376,17 +1376,21 @@ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
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*
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* We initialize the Hardware-reduced ACPI model here:
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*/
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static void __init acpi_reduced_hw_init(void)
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void __init acpi_generic_reduced_hw_init(void)
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{
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if (acpi_gbl_reduced_hardware) {
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/*
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* Override x86_init functions and bypass legacy pic
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* in Hardware-reduced ACPI mode
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* Override x86_init functions and bypass legacy PIC in
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* hardware reduced ACPI mode.
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*/
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x86_init.timers.timer_init = x86_init_noop;
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x86_init.irqs.pre_vector_init = x86_init_noop;
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legacy_pic = &null_legacy_pic;
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}
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}
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static void __init acpi_reduced_hw_init(void)
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{
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if (acpi_gbl_reduced_hardware)
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acpi_generic_reduced_hw_init();
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}
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/*
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