78 lines
2.4 KiB
NASM
78 lines
2.4 KiB
NASM
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; Start with the driver data at 1 MiB, continue for 2 MiB
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DRIVER_MEMORY_AREA equ 0x100000
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DRIVER_SLOT_SIZE equ 65536
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DRIVER_SLOT_COUNT equ 32
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; Functions of all drivers which get initialized (in the order of
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; initialization); the last entry must be a zero, but at 32 entries,
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; the end is forced by the main initialization function.
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driver_init_functions:
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dd initialize_pci_driver
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dd initialize_acpi_driver
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; Ending Entry
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dd 0
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; Arguments:
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; -- None --
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setup_drivers:
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push dword esi
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sub esp, 64
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mov esi, esp
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mov [esi + (64 - 4)], eax
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mov [esi + (64 - 8)], ebx
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mov [esi + (64 - 12)], ecx
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mov [esi + (64 - 16)], edx
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mov [esi + (64 - 20)], edi
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; [esi + 8]: Pointer to the current driver init function
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; [esi + 12]L Pointer to current driver slot
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; ecx: Driver slot index
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xor ecx, ecx
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.driver_setup_loop:
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cmp ecx, DRIVER_SLOT_COUNT
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jae .epilog
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mov ebx, ecx
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shl ebx, 2
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add ebx, driver_init_functions
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mov eax, [ebx]
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mov [esi + 8], eax
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cmp eax, 0
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je .epilog
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mov eax, ecx
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mov edx, DRIVER_SLOT_SIZE
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mul edx
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add eax, DRIVER_MEMORY_AREA
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mov [esi + 12], eax
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push ebp
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mov ebp, esp
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push dword [esi + 12]
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mov eax, [esi + 8]
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call eax
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mov esp, ebp
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pop ebp
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inc ecx
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jmp .driver_setup_loop
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.epilog:
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mov eax, [esi + (64 - 4)]
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mov ebx, [esi + (64 - 8)]
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mov ecx, [esi + (64 - 12)]
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mov edx, [esi + (64 - 16)]
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mov edi, [esi + (64 - 20)]
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add esp, 64
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pop dword esi
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ret
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%include "drivers/pci/driver.asm"
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%include "drivers/acpi/driver.asm"
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