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efi_loader: refactor efi_open_protocol

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efi_open_protocol was implemented to call a protocol specific open
function to retrieve the protocol interface.

The UEFI specification does not know of such a function.

It is not possible to implement InstallProtocolInterface with the
current design.

With the patch the protocol interface itself is stored in the list
of installed protocols of an efi_object instead of an open function.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: fix efi gop support]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
xypron.glpk@gmx.de 2017-07-11 22:06:14 +02:00 • committed by Alexander Graf
parent 8d3a25685e
commit b5349f742a
7 changed files with 26 additions and 92 deletions
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17
include/efi_loader.h
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@ -49,15 +49,10 @@ struct efi_class_map {
/*
* When the UEFI payload wants to open a protocol on an object to get its
* interface (usually a struct with callback functions), this struct maps the
* protocol GUID to the respective protocol handler open function for that
* object protocol combination.
*/
* protocol GUID to the respective protocol interface */
struct efi_handler {
const efi_guid_t *guid;
efi_status_t (EFIAPI *open)(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes);
void *protocol_interface;
};
/*
@ -91,14 +86,6 @@ void efi_smbios_register(void);
/* Called by networking code to memorize the dhcp ack package */
void efi_net_set_dhcp_ack(void *pkt, int len);
/*
* Stub implementation for a protocol opener that just returns the handle as
* interface
*/
efi_status_t EFIAPI efi_return_handle(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes);
/* Called from places to check whether a timer expired */
void efi_timer_check(void);
/* PE loader implementation */