| /kernel/trunk/boot/shutdown.inc |
|---|
| 13,8 → 13,24 |
| $Revision$ |
| use32 |
| become_real: |
| cli |
| lgdt [realmode_gdt-OS_BASE] |
| jmp 8:@f |
| use16 |
| @@: |
| mov ax, 10h |
| mov ds, ax |
| mov es, ax |
| mov fs, ax |
| mov gs, ax |
| mov ss, ax |
| mov eax, cr0 |
| and eax, not 80000001h |
| mov cr0, eax |
| jmp 0x1000:pr_mode_exit |
| align 4 |
| pr_mode_exit: |
| ; setup stack |
| /kernel/trunk/core/memory.inc |
|---|
| 350,6 → 350,34 |
| ret |
| endp |
| ; Allocates a physical page for master page table |
| ; that duplicates first Mb of OS_BASE at address 0; |
| ; used for starting APs and for shutting down, |
| ; where it is important to execute code in trivial-mapped pages. |
| ; Returns eax = allocated physical page. |
| proc create_trampoline_pgmap |
| ; The only non-trivial moment: |
| ; we need a linear address to fill information, |
| ; but we don't need it outside of this function, |
| ; so we're returning physical address. |
| ; Therefore, allocate memory with kernel_alloc, |
| ; this will allocate physical page and a linear address somewhere, |
| ; and deallocate only linear address with free_kernel_space. |
| stdcall kernel_alloc, 0x1000 |
| mov edi, eax |
| mov esi, master_tab |
| mov ecx, 1024 |
| rep movsd |
| mov ecx, [master_tab+(OS_BASE shr 20)] |
| mov [eax], ecx |
| mov edi, eax |
| call get_pg_addr |
| push eax |
| stdcall free_kernel_space, edi |
| pop eax |
| ret |
| endp |
| align 4 |
| proc init_LFB |
| locals |
| /kernel/trunk/kernel.asm |
|---|
| 5452,22 → 5452,6 |
| call IRQ_mask_all |
| if 0 |
| mov word [OS_BASE+0x467+0], pr_mode_exit |
| mov word [OS_BASE+0x467+2], 0x1000 |
| mov al, 0x0F |
| out 0x70, al |
| mov al, 0x05 |
| out 0x71, al |
| mov al, 0xFE |
| out 0x64, al |
| hlt |
| jmp $-1 |
| else |
| cmp byte [OS_BASE + 0x9030], 2 |
| jnz no_acpi_power_off |
| 5613,21 → 5597,6 |
| jmp $ |
| no_acpi_power_off: |
| mov word [OS_BASE+0x467+0], pr_mode_exit |
| mov word [OS_BASE+0x467+2], 0x1000 |
| mov al, 0x0F |
| out 0x70, al |
| mov al, 0x05 |
| out 0x71, al |
| mov al, 0xFE |
| out 0x64, al |
| hlt |
| jmp $-1 |
| scan_rsdp: |
| add eax, OS_BASE |
| .s: |
| 5650,8 → 5619,34 |
| stc |
| .ok: |
| ret |
| end if |
| no_acpi_power_off: |
| call create_trampoline_pgmap |
| mov cr3, eax |
| jmp become_real+0x10000 |
| iglobal |
| align 4 |
| realmode_gdt: |
| ; selector 0 - not used |
| dw 23 |
| dd realmode_gdt-OS_BASE |
| dw 0 |
| ; selector 8 - code from 1000:0000 to 1000:FFFF |
| dw 0FFFFh |
| dw 0 |
| db 1 |
| db 10011011b |
| db 00000000b |
| db 0 |
| ; selector 10h - data from 1000:0000 to 1000:FFFF |
| dw 0FFFFh |
| dw 0 |
| db 1 |
| db 10010011b |
| db 00000000b |
| db 0 |
| endg |
| if ~ lang eq sp |
| diff16 "end of .text segment",0,$ |
| end if |