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|
;; /*
;; * ========================================================
;; *
;; * NeKernel
;; * Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
;; *
;; * 25/03/25: FIX: Fix warning regarding resb being used inside a non-bss area (using no-op instead).
;; *
;; * ========================================================
;; */
[bits 16]
[org 0x7c000]
hal_ap_start:
mov ax, 0x0
mov ss, ax
mov esp, 0x7000
cli
mov eax, cr0
or eax, 1
mov cr0, eax
jmp .hal_ap_start_flush
.hal_ap_start_flush:
mov ax, 0x10
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ss, ax
mov eax, cr4
or eax, 1 << 5
mov cr4, eax
mov eax, cr3
mov cr3, eax
mov ecx, 0xC0000080
rdmsr
or eax, 1
wrmsr
mov eax, cr0
or eax, (1 << 31)
mov cr0, eax
jmp 0x08:hal_ap_64bit_entry
hal_ap_end:
hal_ap_length:
dq hal_ap_end - hal_ap_start
[bits 64]
hal_ap_64bit_entry:
mov ax, 0x23
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ss, ax
mov rsp, [hal_ap_64bit_entry_stack_end]
push 0x33
push qword [hal_ap_64bit_entry_loop]
o64 pushf
push rsp
push 0x33
o64 iret
hal_ap_64bit_entry_loop:
jmp $
hal_ap_64bit_entry_stack:
times 8196*2 nop
hal_ap_64bit_entry_stack_end:
|
