Intel Extensible Firmware Interface - Manual (Page 244)

Extensible Firmware Interface Specification
9-2 12/01/02 Version 1.10
Protocol Interface Structure
typedef struct _EFI_DRIVER_BINDING_PROTOCOL {
EFI_DRIVER_BINDING_PROTOCOL_SUPPORTED
Supported;
EFI_DRIVER_BINDING_PROTOCOL_START Start;
EFI_DRIVER_BINDING_PROTOCOL_STOP Stop;
UINT32 Version;
EFI_HANDLE ImageHandle;
EFI_HANDLE DriverBindingHandle;
} EFI_DRIVER_BINDING_PROTOCOL;
Parameters
Supported Tests to see if this driver supports a given controller. This
service is called by the EFI boot service
ConnectController() . In order to make drivers as small
as possible, there are a few calling restrictions for this service.
ConnectController() must follow these calling
restrictions. If any other agent wishes to call Supported() it
must also follow these calling restrictions. See the
Supported() function description.
Start Starts a controller using this driver. This service is called by the
EFI boot service
ConnectController() . In order to make
drivers as small as possible, there are a few calling restrictions
for this service.
ConnectController() must follow these
calling restrictions. If any other agent wishes to call Start()
it must also follow these calling restrictions. See the Start()
function description.
Stop Stops a controller using this driver. This service is called by the
EFI boot service
DisconnectController() . In order to
make drivers as small as possible, there are a few calling
restrictions for this service.
DisconnectController()
must follow these calling restrictions. If any other agent wishes
to call
Stop() it must also follow these calling restrictions.
See the Stop() function description.
Version The version number of the EFI Driver that produced the
EFI_DRIVER_BINDING_PROTOCOL . This field is used by
the EFI boot service ConnectController() to determine
the order that driver’s Supported() service will be used
when a controller needs to be started. EFI Driver Binding
Protocol instances with higher
Version values will be used
before ones with lower Version values. The Version values
of 0x0-0x0f and 0xfffffff0-0xffffffff are reserved
for platform/OEM specific drivers. The Version values of
0x10-0xffffffef are reserved for IHV-developed drivers.