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x86/acpi: Add a new x86_init_acpi structure to x86_init_ops 

Add a new struct x86_init_acpi to x86_init_ops. For now it contains
only one init function to get the RSDP table address.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: boris.ostrovsky@oracle.com
Cc: lenb@kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20180219100906.14265-3-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Juergen Gross 2018-02-19 11:09:05 +01:00 committed by Ingo Molnar
parent dfc9327ab7
commit 038bac2b02
3 changed files with 21 additions and 0 deletions
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7
arch/x86/include/asm/acpi.h
View File

@ -31,6 +31,7 @@
#include <asm/mmu.h>
#include <asm/mpspec.h>
#include <asm/realmode.h>
#include <asm/x86_init.h>
#ifdef CONFIG_ACPI_APEI
# include <asm/pgtable_types.h>
@ -133,6 +134,12 @@ static inline bool acpi_has_cpu_in_madt(void)
return !!acpi_lapic;
}
#define ACPI_HAVE_ARCH_GET_ROOT_POINTER
static inline u64 acpi_arch_get_root_pointer(void)
{
return x86_init.acpi.get_root_pointer();
}
#else /* !CONFIG_ACPI */
#define acpi_lapic 0

9
arch/x86/include/asm/x86_init.h
View File

@ -130,6 +130,14 @@ struct x86_hyper_init {
void (*init_mem_mapping)(void);
};
/**
* struct x86_init_acpi - x86 ACPI init functions
* @get_root_pointer: get RSDP address
*/
struct x86_init_acpi {
u64 (*get_root_pointer)(void);
};
/**
* struct x86_init_ops - functions for platform specific setup
*
@ -144,6 +152,7 @@ struct x86_init_ops {
struct x86_init_iommu iommu;
struct x86_init_pci pci;
struct x86_hyper_init hyper;
struct x86_init_acpi acpi;
};
/**

5
arch/x86/kernel/x86_init.c
View File

@ -30,6 +30,7 @@ int __init iommu_init_noop(void) { return 0; }
void iommu_shutdown_noop(void) { }
bool __init bool_x86_init_noop(void) { return false; }
void x86_op_int_noop(int cpu) { }
u64 u64_x86_init_noop(void) { return 0; }
/*
* The platform setup functions are preset with the default functions
@ -91,6 +92,10 @@ struct x86_init_ops x86_init __initdata = {
.x2apic_available = bool_x86_init_noop,
.init_mem_mapping = x86_init_noop,
},
.acpi = {
.get_root_pointer = u64_x86_init_noop,
},
};
struct x86_cpuinit_ops x86_cpuinit = {