127 lines
2.3 KiB
NASM
127 lines
2.3 KiB
NASM
;; File: bootia32.asm
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format PE DLL EFI at 10000000h
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entry efimain
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section '.text' code executable readable
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include '../common/const.inc'
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include '../common/macro.inc'
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include 'uefi.inc'
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;; Function: efimain
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;;
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;; Parameters:
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;;
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;; [esp+4] - handle
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;; [esp+8] - <EFI_SYSTEM_TABLE>
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;;
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;; Returns:
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;;
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;; eax - efi status
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;;
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efimain:
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mov eax, [esp+4]
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mov [hImage], eax
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mov eax, [esp+8]
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mov [pSystemTable], eax
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mov ebx, [eax + EFI_SYSTEM_TABLE.RuntimeServices]
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mov [pRuntimeServices], ebx
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mov ebx, [eax + EFI_SYSTEM_TABLE.BootServices]
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mov [pBootServices], ebx
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mov ecx, [ebx + EFI_BOOT_SERVICES.AllocatePool]
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mov [fnAllocatePool], ecx
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mov ecx, [ebx + EFI_BOOT_SERVICES.FreePool]
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mov [fnFreePool], ecx
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mov ecx, [ebx + EFI_BOOT_SERVICES.GetMemoryMap]
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mov [fnGetMemoryMap], ecx
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mov ecx, [ebx + EFI_BOOT_SERVICES.OpenProtocol]
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mov [fnOpenProtocol], ecx
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mov ecx, [ebx + EFI_BOOT_SERVICES.Exit]
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mov [fnExit], ecx
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mov ebx, [eax + EFI_SYSTEM_TABLE.ConOut]
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mov [pConOut], ebx
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mov ecx, [ebx + EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.Reset]
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mov [fnOutputReset], ecx
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mov ecx, [ebx + EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
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mov [fnOutputStr], ecx
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mov eax, 1
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push eax
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push [pConOut]
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call [fnOutputReset]
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add esp, 8
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push szHelloMsg
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push [pConOut]
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call [fnOutputStr]
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add esp, 8
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; #=======================#
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; search and load kernel
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; openVolume()
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; for path in search_path
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; if (open(path + file) == ok)
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; break
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; if not found
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; error
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; get memory map
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; paging
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; jump to kernel
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jmp $
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xor eax, eax
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ret
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section '.reloc' fixups data discardable
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section '.data' data readable writeable
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szHelloMsg du 'StupidOS EFI Bootloader', CR, LF, 0
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; Search path: / /boot /boot/efi
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aSearchPaths du '\\', 0, \
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'\\boot', 0, \
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'\\boot\\efi', 0, 0
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szKernelFile du 'vmstupid.sys', 0
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szConfigFile du 'stpdboot.cfg', 0
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hImage dd ?
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pSystemTable dd ?
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;; Variable: pBootServices
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pBootServices dd ?
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fnAllocatePool dd ?
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fnFreePool dd ?
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fnGetMemoryMap dd ?
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fnOpenProtocol dd ?
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fnCloseProtocol dd ?
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fnExit dd ?
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;; Variable: pRuntimeServices
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pRuntimeServices dd ?
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;; Variable: pConOut
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;; Pointer to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
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pConOut dd ?
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fnOutputReset dd ?
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fnOutputStr dd ?
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;; Variable: pLoadFileProtocol
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;; Pointer to EFI_LOAD_FILE_PROTOCOL
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pLoadFileProtocol dd ?
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fnLoadFile dd ?
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