Instead of adding the definition for the specific MM SVC used in
StandAloneMM we added the one used in the standard SMC calls.
So change the value from -4 to -5 to match the correct one defined in
EDK2 and rename them to avoid future confusion
Fixes 23a397d2e2: ("efi_loader: Add headers for EDK2 StandAloneMM communication")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_var_mem_del() is in __efi_runtime because it would be needed for a
runtime implementation of SetVariable(). memmove() is not in __efi_runtime.
So we should not use it in efi_var_mem_del().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Variable efi_current_var is a pointer to a physical memory address that
becomes invalid after SetVirtualAddressMap(). Instead of converting it via
ConvertPointer() simply set it to NULL.
Fixes: b02a707152 ("efi_loader: enable UEFI variables at runtime")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Include a file with the initial values for non-volatile UEFI variables
into the U-Boot binary. If this variable is set, changes to variable PK
will not be allowed.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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>
The file based and the OP-TEE based UEFI variable store are mutually
exclusive. Define them as choice options in Kconfig.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Update the UEFI secure state when variable 'PK' is updated in the TEE
variables implementation.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
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>
A previous commit adds support for displaying variables RO flag.
Let's add it on the TEE backed variable storage as well.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Saving UEFI variable as encoded U-Boot environment variables does not allow
implement run-time support.
Use a memory buffer for storing UEFI variables.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Saving UEFI variable as encoded U-Boot environment variables does not allow
support at runtime.
Provide functions to manage a memory buffer with UEFI variables.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
If the EFI_OPTIONAL_PTR is set in DebugDisposition, a NULL pointer does not
constitute an invalid parameter.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We need ConvertPointer() to adjust pointers when implementing runtime
services within U-Boot.
After ExitBootServices() gd is not available anymore. So we should not use
EFI_ENTRY() and EFI_EXIT().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Persist non-volatile UEFI variables in a file on the EFI system partition.
The file is written whenever a non-volatile UEFI variable is changed after
initialization of the UEFI sub-system.
The file is read during the UEFI sub-system initialization to restore
non-volatile UEFI variables.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In audit mode the UEFI variable SecureBoot is set to zero but the
efi_secure_boot flag is set to true.
The efi_secure_boot flag should match the UEFIvariable SecureBoot.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Set the read only property of the UEFI variables AuditMode and DeployedMode
conforming to the UEFI specification.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
According to the UEFI specification the variable VendorKeys is 1 if the
"system is configured to use only vendor-provided keys".
As we do not supply any vendor keys yet the variable VendorKeys must be
zero.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Do not change the value of parameter attributes in function
efi_set_variable_int(). This allows to use it later.
Do not use variable attr for different purposes but declare separate
variables (attr and old_attr).
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Simplify the implementation of the UEFI boot manager:
* avoid EFI_CALL for SetVariable() and GetVariable()
* remove unnecessary type conversions
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
UEFI variables OsIndicationsSupported, PlatformLangCodes should be read
only.
Avoid EFI_CALL() for SetVariable().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Separate the remaining UEFI variable API functions GetNextVariableName and
QueryVariableInfo() from internal functions implementing them.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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>
Commit 1b6c08548c ("efi_loader: image_loader: replace debug to
EFI_PRINT") leads to a build warning on 32bit systems:
lib/efi_loader/efi_image_loader.c: In function ‘efi_image_parse’:
include/efi_loader.h:123:8: warning: format ‘%lu’ expects argument
of type ‘long unsigned int’, but argument 8 has
type ‘size_t’ {aka ‘unsigned int’} [-Wformat=]
Use %zu for printing size_t.
Fixes: 1b6c08548c ("efi_loader: image_loader: replace debug to
EFI_PRINT")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
There's 2 variables in efi_get_next_variable_name() checking the size of
the variable name. Let's get rid of the reduntant definition and
simplitfy the code a bit.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In case that a type of certificate in "db" or "dbx" is
EFI_CERT_X509_SHA256_GUID, it is actually not a certificate which contains
a public key for RSA decryption, but a digest of image to be loaded.
If the value matches to a value calculated from a given binary image, it is
granted for loading.
With this patch, common digest check code, which used to be used for
unsigned image verification, will be extracted from
efi_signature_verify_with_sigdb() into efi_signature_lookup_digest(), and
extra step for digest check will be added to efi_image_authenticate().
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
A signed image may have multiple signatures in
- each WIN_CERTIFICATE in authenticode, and/or
- each SignerInfo in pkcs7 SignedData (of WIN_CERTIFICATE)
In the initial implementation of efi_image_authenticate(), the criteria
of verification check for multiple signatures case is a bit ambiguous
and it may cause inconsistent result.
With this patch, we will make sure that verification check in
efi_image_authenticate() should pass against all the signatures.
The only exception would be
- the case where a digest algorithm used in signature is not supported by
U-Boot, or
- the case where parsing some portion of authenticode has failed
In those cases, we don't know how the signature be handled and should
just ignore them.
Please note that, due to this change, efi_signature_verify_with_sigdb()'s
function prototype will be modified, taking "dbx" as well as "db"
instead of outputing a "certificate." If "dbx" is null, the behavior would
be the exact same as before.
The function's name will be changed to efi_signature_verify() once
current efi_signature_verify() has gone due to further improvement
in intermediate certificates support.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
There are a couple of occurrences of hash calculations in which a new
efi_hash_regions will be commonly used.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Since the size check against an entry in efi_search_siglist() is
incorrect, this function will never find out a to-be-matched certificate
and its associated revocation time in the signature list.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Since the certificate table, which is indexed by
IMAGE_DIRECTORY_ENTRY_SECURITY and contains authenticode in PE image,
doesn't always exist, we should make sure that we will retrieve its pointer
only if it exists.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
UEFI specification requires that we shall support three type of
certificates of authenticode in PE image:
WIN_CERT_TYPE_EFI_GUID with the guid, EFI_CERT_TYPE_PCKS7_GUID
WIN_CERT_TYPE_PKCS_SIGNED_DATA
WIN_CERT_TYPE_EFI_PKCS1_15
As EDK2 does, we will support the first two that are pkcs7 SignedData.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Export the UEFI sub-system initialization state. This will allow to treat
the setting of UEFI variables during and after initialization differently.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
When booting via the boot manager use log function for user messages
instead of printf() and debug().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
When overwriting an existing time base authenticated variable we should
compare to the preceding time value and not to the start of the epoch.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The UEFI specification requires that when UEFI variables are set using time
based authentication we have to check that unused fields of the timestamp
are zero
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Just for style consistency, replace all the uses of debug() to
EFI_PRINT() in efi_image_loader.c.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Just for style consistency, replace all the uses of debug() to
EFI_PRINT in efi_variable.c.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Just for style consistency, replace all the uses of debug to
EFI_PRINT in efi_signature.c
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The simplest solution to revert the commit b32ac16f9a ("test/py: fix
test_efi_secboot/conftest.py") is to move efi_console_register()
forward before efi_disk_register().
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_get_variable_common() does not use EFI_ENTRY(). So we should not use
EFI_EXIT() either.
Fixes: 767f6eeb01 ("efi_loader: variable: support variable authentication")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The variables SetupMode, AuditMode, DeployedMode are explicitly defined as
UINT8 in the UEFI specification. The type of SecureBoot is UINT8 in EDK2.
Use variable name secure_boot instead of sec_boot for the value of the
UEFI variable SecureBoot.
Avoid abbreviations in function descriptions.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Variable efi_secure_mode is meant to hold a value of enum efi_secure_mode.
So it should not be defined as int but as enum efi_secure_mode.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
For size_t we have to use %zu for printing not %lu.
Fixes: 4540dabdca ("efi_loader: image_loader: support image
authentication")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The global variable, efi_guid_cert_type_pkcs7, will also be used in
efi_image_loader.c in a succeeding patch so as to correctly handle
a signature type of authenticode in signed image.
Meanwhile, it is currently defined in efi_variable.c. Once some secure
storage solution for UEFI variables is introduced, efi_variable.c may
not always be compiled in.
So move the definition to efi_signature.c as a common place.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Knowing that at least one section header follows the optional header we
only need to check for the length of the 64bit header which is longer than
the 32bit header.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We want to follow the Linux kernel style for function descriptions.
Add missing parentheses after function names.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
On ARM systems gd is stored in register r9 or x18. When compiling with
clang gd is defined as a macro calling function gd_ptr(). So we can not
make assignments to gd.
In the UEFI sub-system we need to save gd when leaving to UEFI binaries and
have to restore gd when reentering U-Boot.
Define a new function set_gd() for setting gd and use it in the UEFI
sub-system.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Tom Rini <trini@konsulko.com>
For passing the optional data of the load option to the loaded imaged
protocol we need its size.
efi_deserialize_load_option() is changed to return the size of the optional
data.
As a by-product we get a partial validation of the load option.
Checking the length of the device path remains to be implemented.
Some Coverity defects identified the load options as user input because
get_unaligned_le32() and get_unaligned_le16() is called. But non of these
Coverity defects can be resolved without marking functions with Coverity
specific tags.
Reported-by: Coverity (CID 303760)
Reported-by: Coverity (CID 303768)
Reported-by: Coverity (CID 303776)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Prior to corrective patches for virtio and SATA devices the same device
path was installed on two different handles. This is not allowable.
With this patch we will throw an error if this condition occurs for
block devices.
Update a comment for the installation of the simple file system
protocol.
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Provide device path nodes for SATA devices.
This avoids creation of two handles with the same device path indicating
our root node.
This is what the device paths for a SATA drive with four partitions could
like:
/VenHw(..)/Sata(0x0,0xffff,0x0)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(1,MBR,0x81ea591f,0x800,0x63ff830)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(2,MBR,0x81ea591f,0x6400800,0x9ff830)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(3,MBR,0x81ea591f,0x6e00800,0x16ef2ab0)
/VenHw(..)/Sata(0x0,0xffff,0x0)/HD(4,MBR,0x81ea591f,0x1dcf3800,0x1dcedab0)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The UEFI specification does not define a device sub-type for virtio.
Let's use a vendor hardware node here.
This avoids creation of two handles with the same device path indicating
our root node.
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
With commit 16ad946f41 ("efi_loader: change setup sequence") the
detection of block device was moved to the start of the initialization
sequence. In the case of virtio devices two handles with the same device
path being created.
The root node handle should be created before anything else.
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Fixes: 16ad946f41 ("efi_loader: change setup sequence")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Remove unnecessary debug() from efi_set_variable_common().
native_name is NULL, so there is no meaning to print it.
Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
We should not be using typedefs and these make it harder to use
forward declarations (to reduce header file inclusions). Drop the typedef.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move this header out of the common header. Network support is used in
quite a few places but it still does not warrant blanket inclusion.
Note that this net.h header itself has quite a lot in it. It could be
split into the driver-mode support, functions, structures, checksumming,
etc.
Signed-off-by: Simon Glass <sjg@chromium.org>
In OP-TEE we can run EDK2's StandAloneMM on a secure partition.
StandAloneMM is responsible for the UEFI variable support. In
combination with OP-TEE and it's U-Boot supplicant, variables are
authenticated/validated in secure world and stored on an RPMB partition.
So let's add a new config option in U-Boot implementing the necessary
calls to OP-TEE for the variable management.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Pipat Methavanitpong <pipat1010@gmail.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Virtually all callers of this function do the rounding on their own.
Some do it right, some don't. Instead of doing this in each caller,
do the rounding in efi_add_memory_map(). Change the size parameter
to bytes instead of pages and remove aligning and size calculation in
all callers.
There is no more need to make the original efi_add_memory_map() (which
takes pages as size) available outside the module. Thus rename it to
efi_add_memory_map_pg() and make it static to prevent further misuse
outside the module.
Signed-off-by: Michael Walle <michael@walle.cc>
Add missing comma in sunxi_display.c.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The only error case is that a given UUID is in wrong format.
So just return EFI_INVALID_PARAMETER here.
Reported-by: Coverity (CID 300333)
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Coverity detected:
Using "&opt->CheckSum" as an array. This might corrupt or misinterpret
adjacent memory locations.
The code should work as far as a structure, IMAGE_OPTIONAL_HEADER(64) is
packed, but modify it in more logical form. Subsystem is a member next to
CheckSum.
Reported-by: Coverity (CID 300339)
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Since pkcs7_parse_message() returns an error pointer, we must not
check for NULL. We have to explicitly set msg to NULL in the error
case, otherwise the call to pkcs7_free_message() on the goto err
path will assume it's a valid object.
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Add missing include linux/err.h
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_variable_parse_signature() returns NULL on error, so IS_ERR()
is an incorrect check. The goto err leads to pkcs7_free_message(),
which works fine on a NULL ptr.
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
There is no need to call efi_get_variable() instead of
efi_get_variable_common(). So let's use the internal function.
Move forward declarations to the top of the file.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Add a couple of missing targets so that helloworld and other efi targets
are not needlessly rebuilt.
CC: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
If we want to restore variables from disk, we need to initialize block
devices before variables.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Eliminate superfluous functions efi_set_volatile_variable() and
efi_set_nonvolatile_variable().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Eliminate superfluous functions efi_get_volatile_variable() and
efi_get_nonvolatile_variable().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This function will check if a given handle to device is an EFI system
partition. It will be utilised in implementing capsule-on-disk feature.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Add function description. Return bool.
Reviewed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_set_secure_stat() provides the common code for each stat transition
caused by efi_transfer_secure_state().
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Correct description of return value.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
"if (left < esl->signature_size)" is not reachable in a while loop.
But it is still valuable in case that a given signature database is
somehow corrupted. So fix the while loop condition.
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Pkcs7_parse.h and x509_parser.h are used in UEFI subsystem, in particular,
secure boot. So move them to include/crypto to avoid relative paths.
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Don't include include x509_parser.h twice.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In subsequent patches UEFI variables shalled be stored on the EFI system
partition. Hence we need to identify the EFI system partition.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This pull request
* provides an implementation of UEFI secure booting
* fixes a problem with the rsa_mod_exp driver which stops some boards
from booting when CONFIG_RSA is enabled which is needed for UEFI
secure booting
* enables the EFI_RNG_PROTOCOL if DM_RNG is enabled
* fixes some function comments
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Merge tag 'efi-2020-07-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi
Pull request for UEFI sub-system for efi-2020-07-rc1
This pull request
* provides an implementation of UEFI secure booting
* fixes a problem with the rsa_mod_exp driver which stops some boards
from booting when CONFIG_RSA is enabled which is needed for UEFI
secure booting
* enables the EFI_RNG_PROTOCOL if DM_RNG is enabled
* fixes some function comments
This file is potentially useful to other architectures saddled with ACPI
so move most of its contents to a common location.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
The following variable is exported as UEFI specification defines:
SignatureSupport: array of GUIDs representing the type of signatures
supported by the platform firmware
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
With this commit, image validation can be enforced, as UEFI specification
section 32.5 describes, if CONFIG_EFI_SECURE_BOOT is enabled.
Currently we support
* authentication based on db and dbx,
so dbx-validated image will always be rejected.
* following signature types:
EFI_CERT_SHA256_GUID (SHA256 digest for unsigned images)
EFI_CERT_X509_GUID (x509 certificate for signed images)
Timestamp-based certificate revocation is not supported here.
Internally, authentication data is stored in one of certificates tables
of PE image (See efi_image_parse()) and will be verified by
efi_image_authenticate() before loading a given image.
It seems that UEFI specification defines the verification process
in a bit ambiguous way. I tried to implement it as closely to as
EDK2 does.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
The following variable is exported as UEFI specification defines:
VendorKeys: whether the system is configured to use only vendor-provided
keys or not
The value will have to be modified if a platform has its own way of
initializing signature database, in particular, PK.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
UEFI specification defines several global variables which are related to
the current secure boot state. In this commit, those values will be
maintained according to operations. Currently, AuditMode and DeployedMode
are defined but not implemented.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
With this commit, EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS
is supported for authenticated variables and the system secure state
will transfer between setup mode and user mode as UEFI specification
section 32.3 describes.
Internally, authentication data is stored as part of authenticated
variable's value. It is nothing but a pkcs7 message (but we need some
wrapper, see efi_variable_parse_signature()) and will be validated by
efi_variable_authenticate(), hence efi_signature_verify_with_db().
Associated time value will be encoded in "{...,time=...}" along with
other UEFI variable's attributes.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
efi_signature_parse_sigdb() is a helper function will be used to parse
signature database variable and instantiate a signature store structure
in later patches.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
In this commit, implemented are a couple of helper functions which will be
used to materialize variable authentication as well as image authentication
in later patches.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Correct function descriptions in efi_watchdog.c.
Add the descriptions to the generated HTML documentation.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Correct function descriptions in efi_unicode_collation.c
Add the Unicode collation protocol to the generated HTML documentation.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Enable EFI_RNG_PROTOCOL by default if DM_RNG is set.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Acked-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Remove superfluous 'if DM_RNG'
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
'vendor' is both an input and an output parameter. So it cannot be
constant.
Fixes: 0bda81bfdc ("efi_loader: use const efi_guid_t * for variable services")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
For EFI binaries we have to provide an implementation of memmove() in
efi_freestanding.c.
Before this patch the memmove() function was copying in the wrong
direction.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The runtime service GetNextVariable() returns the length of the next
variable including the closing 0x0000. This length should be in bytes.
Comparing the output of EDK2 and U-Boot shows that this is currently not
correctly implemented:
EDK2:
OsIndicationsSupported: 46
PlatformLang: 26
PlatformLangCodes: 36
U-Boot:
OsIndicationsSupported: 23
PlatformLang: 13
PlatformLangCodes: 18
Provide correct length in GetNextVariable().
Fixes: d99a87f84b ("efi_loader: implement GetNextVariableName()")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This is a preparatory patch.
Those functions will be used in an implementation of UEFI firmware
management protocol as part of my capsule update patch.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Currently, if GetMemoryMap API returns EFI_BUFFER_TOO_SMALL, it doesn't
set valid values to other parameters, descriptor_size and
descriptor_version, except memory_map_size.
Some efi applications, however, may use those value; in particular,
xen uses descriptor_size to calculate a size of buffer to be allocated.
While UEFI specification is ambiguous in this point, it would be better
to address this issue proactively to maximize the compatibility with
existing efi applications.
With this patch, for example, xen.efi (and hence linux kernel) can be
started via bootefi without modification.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Following kernel's proposal for an arch-agnostic initrd loading
mechanism [1] let's implement the U-boot counterpart.
This new approach has a number of advantages compared to what we did up
to now. The file is loaded into memory only when requested limiting the
area of TOCTOU attacks. Users will be allowed to place the initramfs
file on any u-boot accessible partition instead of just the ESP one.
Finally this is an attempt of a generic interface across architectures
in the linux kernel so it makes sense to support that.
The file location is intentionally only supported as a config option
argument(CONFIG_EFI_INITRD_FILESPEC), in an effort to enhance security.
Although U-boot is not responsible for verifying the integrity of the
initramfs, we can enhance the offered security by only accepting a
built-in option, which will be naturally verified by UEFI Secure Boot.
This can easily change in the future if needed and configure that via ENV
or UEFI variable.
[1] https://lore.kernel.org/linux-efi/20200207202637.GA3464906@rani.riverdale.lan/T/#m4a25eb33112fab7a22faa0fd65d4d663209af32f
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
UEFI spec 2.8 errata A replaces the RuntimeServicesSupported variable
defined in UEFI spec 2.8 by the configuration table
EFI_RT_PROPERTIES_TABLE. So let's follow suit.
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
UEFI programs like GRUB make change terminal colors which requires support
for ANSI escape sequences.
Let CONFIG_EFI_LOADER=y imply CONFIG_VIDEO_ANSI.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Install the EFI_RNG_PROTOCOL implementation for it's subsequent use by
the kernel for features like kaslr.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Add support for the EFI_RNG_PROTOCOL routines for the qemu arm64
platform. EFI_RNG_PROTOCOL is an uefi boottime service which is
invoked by the efi stub in the kernel for getting random seed for
kaslr.
The routines are platform specific, and use the virtio-rng device on
the platform to get random data.
The feature can be enabled through the following config
CONFIG_EFI_RNG_PROTOCOL
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Changed SPDX header to use /* instead of //.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Add guidcpy function to copy the source guid to the destination
guid. Use this function instead of memcpy for copying to the
destination guid.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Use void * instead of efi_guid_t * for arguments to allow copying unaligned
GUIDs. The GUIDs of configuration tables are __packed.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
U-Boot can be compiled with function tracing enabled.
When compiling with FTRACE __cyg_profile_func_enter() is called when a
function is entered and __cyg_profile_func_exit() when the function is
left.
To avoid a crash we have to define these function for the free-standing
UEFI binaries.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
On a VT100 terminal <ESC>[2J should be enough to both clear the whole
screen and set the cursor to position (1, 1). But the Linux console does
not behave like this. So send an extra <ESC>[H. For reference see the
console_codes(4) man page.
Add a function description.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
When the GetInfo() method of the EFI_FILE_PROTOCOL is called to retrieve
the file system info we claim that the volume is read only and has no free
space. This leads to failures in programs that check this information
before writing to the volume like SCT's InstallSct.efi.
Currently there is no function to determine these parameters in U-Boot. So
let's return optimistic values:
Return that the volume is writable.
Return the volume size as free space.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
UEFI applications like GRUB and SCT assume that function keys are enabled
on the keyboard.
Let EFI_LOADER imply USB_KEYBOARD_FN_KEYS.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Move this function into init.h which seems to be designed for this sort
of thing. Also update the header to declare struct global_data so that it
can be included without global_data.h being needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Move these two functions into the irq_funcs.h header file. Also move
interrupt_handler_t as this is used by the irq_install_handler() function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
These functions are CPU-related and do not use driver model. Move them to
cpu_func.h
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This function belongs in time.h so move it over and add a comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Drop inclusion of crc.h in common.h and use the correct header directly
instead.
With this we can drop the conflicting definition in fw_env.h and rely on
the crc.h header, which is already included.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Some of the ARM11 boards have tight limits on the size of U-Boots. Hence
use EFI_LOADER=n as default on ARM11.
Set EFI_LOADER=y for the Raspberry Pi and Raspberry Pi Zero as these boards
have sufficient storage on the SD card.
Suggested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
With an implementation for allow_unaligned() available for arm1136 and
arm1176 UEFI can be supported on these architectures.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
fatload USB was reported to fail on the Sheevaplug. Debugging showed that
this was caused by an incorrect unaligned write to memory in
path_to_uefi().
UEFI on ARM requires that unaligned memory access is enabled.
* ARMv5 does not support unaligned access at all.
* ARMv6 supports unaligned access when we clear the A flag and set the
U flag.
* On ARMv7 unaligned access is possible when clearing the aligned flag,
which we do in function allow_unaligned() (arch/arm/cpu/armv7/sctlr.S).
For none of the other cpus in arch/arm/cpu/ we have implemented a
similar function.
* ARMv8 allows unaligned access.
Let EFI_LOADER on ARM depend on SYS_CPU=armv7 or SYS_CPU=armv8.
Once we have implemented allow_unaligned() for other ARM CPUs we can add
these to Kconfig.
Reported-by: Gray Remlin <gryrmln@gmail.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
On the sandbox the UEFI binaries must match the host architectures.
Adjust the Makefiles. Provide the PE/COFF header and relocation files.
Allow building helloworld.efi on the sandbox.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
On the sandbox we should mark the stack area as EFI runtime memory like we
do on any other architecture.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Currently, a whole disk without any partitions is not associated
with EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. So even if it houses some
file system, there is a chance that we may not be able to access
it, particularly, when accesses are to be attempted after searching
that protocol against a device handle.
With this patch, EFI_SIMPLE_FILE_SYSTEM_PROTOCOL is installed
to such a disk if part_get_info() shows there is no partition
table installed on it.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Only if no partition table exists, check for a file system on disk level.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Correctly check the return value of efi_dp_from_file().
If we can determine device path for the file, should not depend on the
device path for the device being requested.
Provide a function description for efi_dp_from_name().
Reported-by: Coverity CID 273159, CID 273158
Fixes: 08c51fff30 ("efi_loader: device_path: check against file path length")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
'make tests' on an 32bit ARM system leads to
In file included from ../lib/efi_loader/efi_variable.c:9:
../include/malloc.h:364:7: error: conflicting types for ‘memset’
void* memset(void*, int, size_t);
^~~~~~
In file included from ../include/compiler.h:126,
from ../include/env.h:12,
from ../lib/efi_loader/efi_variable.c:8:
../include/linux/string.h:103:15:
note: previous declaration of ‘memset’ was here
extern void * memset(void *,int,__kernel_size_t);
^~~~~~
In file included from ../lib/efi_loader/efi_variable.c:9:
../include/malloc.h:365:7: error: conflicting types for ‘memcpy’
void* memcpy(void*, const void*, size_t);
^~~~~~
In file included from ../include/compiler.h:126,
from ../include/env.h:12,
from ../lib/efi_loader/efi_variable.c:8:
../include/linux/string.h:106:15:
note: previous declaration of ‘memcpy’ was here
extern void * memcpy(void *,const void *,__kernel_size_t);
^~~~~~
Use common.h as first include as recommended by the U-Boot coding style
guide.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
In the current implementation, EFI_SIMPLEFILE_SYSTEM_PROTOCOL is always
installed to all the partitions even if some of them may house no file
system.
With this patch, that protocol will be installed only if any file system
exists.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
device_path strcuture has 2 bytes of "length" field, and so
file path length should not exceed this limit, 65535.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This allows our EFI API to create a device path node for NVMe
devices. It adds the necessary device path struct, uses the
nvme namespace accessor to retrieve the id and eui64, and also
provides support for the device path text protocol.
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Appending to a non-existent variable must result in an error of type
EFI_NOT_FOUND.
Fixes: 09c76b79a9db ("efi_loader: SetVariable() deleting variables")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
APPEND_WRITE with data length zero is allowable according to the UEFI
specification.
The EDK2 interpretation of no access attributes is attributes = 0. As
the UEFI specification is vague in this respect let's stick to EDK2 here.
Fixes: commit 6d2f27c5fd ("efi_loader: variable: support APPEND_WRITE")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We always have to return via EFI_EXIT() from EFIAPI functions.
Coverity reported an unreachable line and a resource leak.
Fixes: commit 6d2f27c5fd ("efi_loader: variable: support APPEND_WRITE")
Reported-by: Coverity Scan CID 253575, CID 184095
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Remove outdated TODO for efi_stri_coll(). efi_stri_coll() is already using
the Unicode capitalization table.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
If EFI_VARIABLE_APPEND_WRITE is specified in attributes at
efi_set_variable(), specified data will be appended to the variable's
original value. Attributes other than APPEND_WRITE should not be
modified.
With this patch, APPEND_WRITE test in 'variables' selftest will pass.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
DisconnectController() should never return EFI_NOT_FOUND.
If EFI_DRIVER_BINDING_PROTOCOL.Stop() fails, return EFI_DEVICE_ERROR.
If the driver handle does not expose the EFI_DRIVER_BINDING_PROTOCOL
return EFI_INVALID_PARAMETER.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
