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efi_loader: implement ReinstallProtocolInterface

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The ReinstallProtocolInterface boot time service is implemented.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-05-11 12:09:22 +02:00 committed by Alexander Graf
parent 1f470e1790
commit e861a120e7
1 changed files with 43 additions and 23 deletions
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66
lib/efi_loader/efi_boottime.c
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@ -1021,29 +1021,6 @@ out:
return EFI_EXIT(r);
}
/*
* Reinstall protocol interface.
*
* This function implements the ReinstallProtocolInterface service.
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
* @handle handle on which the protocol shall be
* reinstalled
* @protocol GUID of the protocol to be installed
* @old_interface interface to be removed
* @new_interface interface to be installed
* @return status code
*/
static efi_status_t EFIAPI efi_reinstall_protocol_interface(
efi_handle_t handle, const efi_guid_t *protocol,
void *old_interface, void *new_interface)
{
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
new_interface);
return EFI_EXIT(EFI_ACCESS_DENIED);
}
/*
* Get all drivers associated to a controller.
* The allocated buffer has to be freed with free().
@ -2774,6 +2751,49 @@ out:
return EFI_EXIT(ret);
}
/*
* Reinstall protocol interface.
*
* This function implements the ReinstallProtocolInterface service.
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
* The old interface is uninstalled. The new interface is installed.
* Drivers are connected.
*
* @handle handle on which the protocol shall be
* reinstalled
* @protocol GUID of the protocol to be installed
* @old_interface interface to be removed
* @new_interface interface to be installed
* @return status code
*/
static efi_status_t EFIAPI efi_reinstall_protocol_interface(
efi_handle_t handle, const efi_guid_t *protocol,
void *old_interface, void *new_interface)
{
efi_status_t ret;
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
new_interface);
ret = EFI_CALL(efi_uninstall_protocol_interface(handle, protocol,
old_interface));
if (ret != EFI_SUCCESS)
goto out;
ret = EFI_CALL(efi_install_protocol_interface(&handle, protocol,
EFI_NATIVE_INTERFACE,
new_interface));
if (ret != EFI_SUCCESS)
goto out;
/*
* The returned status code has to be ignored.
* Do not create an error if no suitable driver for the handle exists.
*/
EFI_CALL(efi_connect_controller(handle, NULL, NULL, true));
out:
return EFI_EXIT(ret);
}
/*
* Get all child controllers associated to a driver.
* The allocated buffer has to be freed with free().