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4 commits

Author SHA1 Message Date
Heinrich Schuchardt
99bfab8b58 efi_loader: identify PK, KEK, db, dbx correctly 
To determine if a varible is on the of the authentication variables
PK, KEK, db, dbx we have to check both the name and the GUID.

Provide a function converting the variable-name/guid pair to an enum and
use it consistently.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
 2020-07-16 12:37:02 +02:00
Heinrich Schuchardt
012c56ac76 efi_loader: restructure code for TEE variables 
When using secure boot functions needed both for file and TEE based UEFI
variables have to be moved to the common code module efi_var_common.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
 2020-07-16 12:37:02 +02:00
Heinrich Schuchardt
01df8cf336 efi_loader: separate UEFI variable API from implemementation 
Separate the remaining UEFI variable API functions GetNextVariableName and
QueryVariableInfo() from internal functions implementing them.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
 2020-07-11 23:14:16 +02:00
Heinrich Schuchardt
f2d2b3a11c efi_loader: prepare for read only OP-TEE variables 
We currently have two implementations of UEFI variables:

* variables provided via an OP-TEE module
* variables stored in the U-Boot environment

Read only variables are up to now only implemented in the U-Boot
environment implementation.

Provide a common interface for both implementations that allows handling
read-only variables.

As variable access is limited to very few source files put variable
related definitions into new include efi_variable.h instead of efi_loader.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
 2020-07-11 23:14:16 +02:00