1,5 → 1,6 |
# |
# Copyright (C) 2001-2004 Jakub Jermar |
# Copyright (C) 2005-2006 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
31,16 → 32,17 |
# |
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#include <arch/boot/boot.h> |
#include <arch/boot/memmap.h> |
#include <arch/mm/page.h> |
#include <arch/pm.h> |
#include <arch/cpu.h> |
#include <arch/cpuid.h> |
#include <arch/mm/page.h> |
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.section K_TEXT_START_2, "ax" |
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.section K_TEXT_START, "ax" |
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#ifdef CONFIG_SMP |
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.global ap_boot |
.global unmapped_ap_boot |
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# This piece of code is real-mode and is meant to be alligned at 4K boundary. |
# The requirement for such an alignment comes from MP Specification's STARTUP IPI |
47,36 → 49,34 |
# requirements. |
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.align 4096 |
ap_boot: |
unmapped_ap_boot: |
.code16 |
cli |
xorw %ax, %ax |
movw %ax, %ds |
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lgdt real_bootstrap_gdtr_boot # initialize Global Descriptor Table register |
lgdt ap_gdtr # initialize Global Descriptor Table register |
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movl %cr0, %eax |
orl $1, %eax |
movl %eax, %cr0 # switch to protected mode |
movl %eax, %cr0 # switch to protected mode |
jmpl $gdtselector(KTEXT32_DES), $jump_to_kernel - BOOT_OFFSET + AP_BOOT_OFFSET |
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jmpl $gdtselector(KTEXT32_DES), $now_in_prot |
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.code32 |
now_in_prot: |
jump_to_kernel: |
.code32 |
movw $gdtselector(KDATA_DES), %ax |
movw %ax, %ds |
movw %ax, %es |
movw %ax, %ss |
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# Enable 64-bit page transaltion entries - CR4.PAE = 1. |
# Paging is not enabled until after long mode is enabled |
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movl %cr4, %eax |
btsl $5, %eax |
movl %eax, %cr4 |
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# Set up NEW paging tables, that are |
# already moved BOOT_OFFSET up |
leal ptl_0+BOOT_OFFSET, %eax |
leal ptl_0, %eax |
movl %eax, %cr3 |
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# Enable long mode |
91,12 → 91,23 |
movl %eax, %cr0 |
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# At this point we are in compatibility mode |
jmpl $gdtselector(KTEXT_DES), $start64 |
jmpl $gdtselector(KTEXT_DES), $start64 - BOOT_OFFSET + AP_BOOT_OFFSET |
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.code64 |
start64: |
movq (ctx), %rsp |
call main_ap # never returns |
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call main_ap - AP_BOOT_OFFSET + BOOT_OFFSET # never returns |
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#endif /* CONFIG_SMP */ |
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.section K_DATA_START, "ax" |
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#ifdef CONFIG_SMP |
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.global unmapped_ap_gdtr |
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unmapped_ap_gdtr: |
.word 0 |
.long 0 |
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#endif /* CONFIG_SMP */ |