21cf953a03
the application processor trampoline needs the trampoline physical address to be mapped for the few instructions between loading the page table and jumping to normal memory area; setup a new pt for them. Also make it use its stack where it needs to be directly. With that, x86 can finally remove the 0 page from its init mapping Change-Id: Iab3f33a2ed22570eeb47b5ab6e068c9a17c25413
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/**
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* \file cpulocal.h
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* License details are found in the file LICENSE.
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* \brief
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* Declare information for individual CPUs.
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* \author Taku Shimosawa <shimosawa@is.s.u-tokyo.ac.jp> \par
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* Copyright (C) 2011 - 2012 Taku Shimosawa
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*/
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/*
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* HISTORY
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*/
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#ifndef HEADER_X86_COMMON_CPULOCAL_H
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#define HEADER_X86_COMMON_CPULOCAL_H
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#include <types.h>
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#include <registers.h>
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/*
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* CPU Local Page
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* 0 - : struct x86_cpu_local_varibles
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* - 4096 : kernel stack
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*/
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#define X86_CPU_LOCAL_OFFSET_TSS 176
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#define X86_CPU_LOCAL_OFFSET_KSTACK 16
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#define X86_CPU_LOCAL_OFFSET_USTACK 24
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struct x86_cpu_local_variables {
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/* 0 */
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unsigned long processor_id;
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unsigned long apic_id;
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/* 16 */
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unsigned long kernel_stack;
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unsigned long user_stack;
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/* 32 */
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struct x86_desc_ptr gdt_ptr;
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unsigned short pad[3];
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/* 48 */
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uint64_t gdt[16];
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/* 176 */
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struct tss64 tss;
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/* 280 */
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unsigned long paniced;
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uint64_t panic_regs[21];
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/* 456 */
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} __attribute__((packed));
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struct x86_cpu_local_variables *get_x86_cpu_local_variable(int id);
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struct x86_cpu_local_variables *get_x86_this_cpu_local(void);
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void *get_x86_cpu_local_kstack(int id);
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void *get_x86_this_cpu_kstack(void);
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#endif
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