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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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29
lib/efi_loader/efi_disk.c
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@ -35,29 +35,6 @@ struct efi_disk_obj {
const struct blk_desc *desc;
};
static efi_status_t EFIAPI efi_disk_open_block(void *handle,
efi_guid_t *protocol, void **protocol_interface,
void *agent_handle, void *controller_handle,
uint32_t attributes)
{
struct efi_disk_obj *diskobj = handle;
*protocol_interface = &diskobj->ops;
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_open_dp(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
struct efi_disk_obj *diskobj = handle;
*protocol_interface = diskobj->dp;
return EFI_SUCCESS;
}
static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
char extended_verification)
{
@ -210,10 +187,11 @@ static void efi_disk_add_dev(const char *name,
diskobj = calloc(1, objlen);
/* Fill in object data */
dp = (void *)&diskobj[1];
diskobj->parent.protocols[0].guid = &efi_block_io_guid;
diskobj->parent.protocols[0].open = efi_disk_open_block;
diskobj->parent.protocols[0].protocol_interface = &diskobj->ops;
diskobj->parent.protocols[1].guid = &efi_guid_device_path;
diskobj->parent.protocols[1].open = efi_disk_open_dp;
diskobj->parent.protocols[1].protocol_interface = dp;
diskobj->parent.handle = diskobj;
diskobj->ops = block_io_disk_template;
diskobj->ifname = if_typename;
@ -230,7 +208,6 @@ static void efi_disk_add_dev(const char *name,
diskobj->ops.media = &diskobj->media;
/* Fill in device path */
dp = (void*)&diskobj[1];
diskobj->dp = dp;
dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;