| 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 |
|---|
| # |
| |
| #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> |
| |
| .section K_TEXT_START_2, "ax" |
| |
| .section K_TEXT_START, "ax" |
| |
| #ifdef CONFIG_SMP |
| |
| .global ap_boot |
| .global unmapped_ap_boot |
| |
| # 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. |
| |
| .align 4096 |
| ap_boot: |
| unmapped_ap_boot: |
| .code16 |
| cli |
| xorw %ax, %ax |
| movw %ax, %ds |
| |
| lgdt real_bootstrap_gdtr_boot # initialize Global Descriptor Table register |
| lgdt ap_gdtr # initialize Global Descriptor Table register |
| |
| 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 |
| |
| jmpl $gdtselector(KTEXT32_DES), $now_in_prot |
| |
| .code32 |
| now_in_prot: |
| jump_to_kernel: |
| .code32 |
| movw $gdtselector(KDATA_DES), %ax |
| movw %ax, %ds |
| movw %ax, %es |
| movw %ax, %ss |
| |
| |
| # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
| # Paging is not enabled until after long mode is enabled |
| |
| movl %cr4, %eax |
| btsl $5, %eax |
| movl %eax, %cr4 |
| |
| # 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 |
| |
| # Enable long mode |
| 91,12 → 91,23 |
|---|
| movl %eax, %cr0 |
| |
| # At this point we are in compatibility mode |
| jmpl $gdtselector(KTEXT_DES), $start64 |
| jmpl $gdtselector(KTEXT_DES), $start64 - BOOT_OFFSET + AP_BOOT_OFFSET |
| |
| .code64 |
| start64: |
| movq (ctx), %rsp |
| call main_ap # never returns |
| |
| |
| call main_ap - AP_BOOT_OFFSET + BOOT_OFFSET # never returns |
| |
| #endif /* CONFIG_SMP */ |
| |
| .section K_DATA_START, "ax" |
| |
| #ifdef CONFIG_SMP |
| |
| .global unmapped_ap_gdtr |
| |
| unmapped_ap_gdtr: |
| .word 0 |
| .long 0 |
| |
| #endif /* CONFIG_SMP */ |