b1859a6687
This change adds a helper function cpu_get_lapic_addr() that returns LOCAL_APIC_ADDR for x86. It also adds a weak default implementation which returns 0 if platform does not support LAPIC. This is being done in preparation to move all ACPI table support in coreboot out of arch/x86. BUG=b:155428745 Change-Id: I4d9c50ee46804164712aaa22be1b434f800871ec Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40929 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
28 lines
872 B
C
28 lines
872 B
C
#ifndef CPU_CPU_H
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#define CPU_CPU_H
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#include <arch/cpu.h>
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void cpu_initialize(unsigned int cpu_index);
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/* Returns default APIC id based on logical_cpu number or < 0 on failure. */
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int cpu_get_apic_id(int logical_cpu);
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uintptr_t cpu_get_lapic_addr(void);
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/* Function to keep track of cpu default apic_id */
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void cpu_add_map_entry(unsigned int index);
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struct bus;
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void initialize_cpus(struct bus *cpu_bus);
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asmlinkage void secondary_cpu_init(unsigned int cpu_index);
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int cpu_phys_address_size(void);
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#if ENV_RAMSTAGE
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#define __cpu_driver __attribute__((used, __section__(".rodata.cpu_driver")))
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#else
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#define __cpu_driver __attribute__((unused))
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#endif
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/** start of compile time generated pci driver array */
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extern struct cpu_driver _cpu_drivers[];
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/** end of compile time generated pci driver array */
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extern struct cpu_driver _ecpu_drivers[];
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#endif /* CPU_CPU_H */
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