To simplify adding ACPI support to the OP-TEE driver, model it as
a platform driver. This will permit us to use the generic device
property layer for parsing additional properties, regardless of
whether DT or ACPI is being used.
Note that this change will result in the OP-TEE driver to be loaded
automatically on systems that advertise the presence of OP-TEE via
the device tree.
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Prior to this patch in optee_probe() when optee_enumerate_devices() was
called the struct optee was fully initialized. If
optee_enumerate_devices() returns an error optee_probe() is supposed to
clean up and free the struct optee completely, but will at this late
stage need to call optee_remove() instead. This isn't done and thus
freeing the struct optee prematurely.
With this patch the call to optee_enumerate_devices() is done after
optee_probe() has returned successfully and in case
optee_enumerate_devices() fails everything is cleaned up with a call to
optee_remove().
Fixes: c3fa24af92 ("tee: optee: add TEE bus device enumeration support")
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Based on 1 normalized pattern(s):
this software is licensed under the terms of the gnu general public
license version 2 as published by the free software foundation and
may be copied distributed and modified under those terms this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 285 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----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=AE1r
-----END PGP SIGNATURE-----
Merge tag 'tee-optee-for-5.2' of http://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers
Allow OP-TEE driver to work without static shared memory
* tag 'tee-optee-for-5.2' of http://git.linaro.org:/people/jens.wiklander/linux-tee:
optee: allow to work without static shared memory
Signed-off-by: Olof Johansson <olof@lixom.net>
On virtualized systems it is possible that OP-TEE will provide
only dynamic shared memory support. So it is fine to boot
without static SHM enabled if dymanic one is supported.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
As usual, the drivers/tee and drivers/reset subsystems get merged
here, with the expected set of smaller updates and some new hardware
support. The tee subsystem now supports device drivers to be attached
to a tee, the first example here is a random number driver with its
implementation in the secure world.
Three new power domain drivers get added for specific chip families:
- Broadcom BCM283x chips (used in Raspberry Pi)
- Qualcomm Snapdragon phone chips
- Xilinx ZynqMP FPGA SoCs
One new driver is added to talk to the BPMP firmware on NVIDIA
Tegra210
Existing drivers are extended for new SoC variants from NXP,
NVIDIA, Amlogic and Qualcomm.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=+DOl
-----END PGP SIGNATURE-----
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"As usual, the drivers/tee and drivers/reset subsystems get merged
here, with the expected set of smaller updates and some new hardware
support. The tee subsystem now supports device drivers to be attached
to a tee, the first example here is a random number driver with its
implementation in the secure world.
Three new power domain drivers get added for specific chip families:
- Broadcom BCM283x chips (used in Raspberry Pi)
- Qualcomm Snapdragon phone chips
- Xilinx ZynqMP FPGA SoCs
One new driver is added to talk to the BPMP firmware on NVIDIA
Tegra210
Existing drivers are extended for new SoC variants from NXP, NVIDIA,
Amlogic and Qualcomm"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits)
tee: optee: update optee_msg.h and optee_smc.h to dual license
tee: add cancellation support to client interface
dpaa2-eth: configure the cache stashing amount on a queue
soc: fsl: dpio: configure cache stashing destination
soc: fsl: dpio: enable frame data cache stashing per software portal
soc: fsl: guts: make fsl_guts_get_svr() static
hwrng: make symbol 'optee_rng_id_table' static
tee: optee: Fix unsigned comparison with less than zero
hwrng: Fix unsigned comparison with less than zero
tee: fix possible error pointer ctx dereferencing
hwrng: optee: Initialize some structs using memset instead of braces
tee: optee: Initialize some structs using memset instead of braces
soc: fsl: dpio: fix memory leak of a struct qbman on error exit path
clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static
soc: qcom: llcc-slice: Fix typos
qcom: soc: llcc-slice: Consolidate some code
qcom: soc: llcc-slice: Clear the global drv_data pointer on error
drivers: soc: xilinx: Add ZynqMP power domain driver
firmware: xilinx: Add APIs to control node status/power
dt-bindings: power: Add ZynqMP power domain bindings
...
Add an of_node_put when a tested device node is not available.
The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):
// <smpl>
@@
identifier f;
local idexpression e;
expression x;
@@
e = f(...);
... when != of_node_put(e)
when != x = e
when != e = x
when any
if (<+...of_device_is_available(e)...+>) {
... when != of_node_put(e)
(
return e;
|
+ of_node_put(e);
return ...;
)
}
// </smpl>
Fixes: db878f76b9 ("tee: optee: take DT status property into account")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
OP-TEE provides a pseudo TA to enumerate TAs which can act as devices/
services for TEE bus. So implement device enumeration using invoke
function: PTA_CMD_GET_DEVICES provided by pseudo TA to fetch array of
device UUIDs. Also register these enumerated devices with TEE bus as
"optee-clntX" device.
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
[jw: fix optee_enumerate_devices() with no devices found]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
When dynamic shared memory support is enabled in the OP-TEE Trusted
OS, it doesn't mean that the driver supports it, which can confuse
users during debugging. Log a message when dynamic shared memory is
enabled in the driver, to let users know for sure.
Suggested-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Victor Chong <victor.chong@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
* Adds a kernel internal tee client interface allowing other drivers
etc to access a TEE
* OP-TEE driver takes DT status property into account
-----BEGIN PGP SIGNATURE-----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=E7jv
-----END PGP SIGNATURE-----
Merge tag 'tee-drv-for-4.20' of git://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers
Misc enhancement for tee driver subsystem
* Adds a kernel internal tee client interface allowing other drivers
etc to access a TEE
* OP-TEE driver takes DT status property into account
* tag 'tee-drv-for-4.20' of git://git.linaro.org/people/jens.wiklander/linux-tee:
tee: add kernel internal client interface
tee: optee: take DT status property into account
Signed-off-by: Olof Johansson <olof@lixom.net>
DT nodes may have a 'status' property which, if set to anything other
than 'ok' or 'okay', indicates to the OS that the DT node should be
treated as if it was not present. So add that missing logic to the
OP-TEE driver.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This change adds KCONFIG option to set number of pages out of
whole shared memory to be used for OP-TEE driver private data
structures.
Signed-off-by: Sahil Malhotra <sahil.malhotra@nxp.com>
[jw: fixing trivial merge conflict]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
When the driver initializes, report the following information
about the OP-TEE OS:
- major and minor version,
- build identifier (if available).
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Matthias Brugger <mbruger@suse.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
subsystem as a whole and in OP-TEE in particular.
Global Platform TEE specification [1] allows client applications
to register part of own memory as a shared buffer between
application and TEE. This allows fast zero-copy communication between
TEE and REE. But current implementation of TEE in Linux does not support
this feature.
Also, current implementation of OP-TEE transport uses fixed size
pre-shared buffer for all communications with OP-TEE OS. This is okay
in the most use cases. But this prevents use of OP-TEE in virtualized
environments, because:
a) We can't share the same buffer between different virtual machines
b) Physically contiguous memory as seen by VM can be non-contiguous
in reality (and as seen by OP-TEE OS) due to second stage of
MMU translation.
c) Size of this pre-shared buffer is limited.
So, first part of this pull request adds generic register/unregister
interface to tee subsystem. The second part adds necessary features into
OP-TEE driver, so it can use not only static pre-shared buffer, but
whole RAM to communicate with OP-TEE OS.
This change is backwards compatible allowing older secure world or
user space to work with newer kernels and vice versa.
[1] https://www.globalplatform.org/specificationsdevice.asp
-----BEGIN PGP SIGNATURE-----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=3iwl
-----END PGP SIGNATURE-----
Merge tag 'tee-drv-dynamic-shm-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers
Pull "tee dynamic shm for v4.16" from Jens Wiklander:
This pull request enables dynamic shared memory support in the TEE
subsystem as a whole and in OP-TEE in particular.
Global Platform TEE specification [1] allows client applications
to register part of own memory as a shared buffer between
application and TEE. This allows fast zero-copy communication between
TEE and REE. But current implementation of TEE in Linux does not support
this feature.
Also, current implementation of OP-TEE transport uses fixed size
pre-shared buffer for all communications with OP-TEE OS. This is okay
in the most use cases. But this prevents use of OP-TEE in virtualized
environments, because:
a) We can't share the same buffer between different virtual machines
b) Physically contiguous memory as seen by VM can be non-contiguous
in reality (and as seen by OP-TEE OS) due to second stage of
MMU translation.
c) Size of this pre-shared buffer is limited.
So, first part of this pull request adds generic register/unregister
interface to tee subsystem. The second part adds necessary features into
OP-TEE driver, so it can use not only static pre-shared buffer, but
whole RAM to communicate with OP-TEE OS.
This change is backwards compatible allowing older secure world or
user space to work with newer kernels and vice versa.
[1] https://www.globalplatform.org/specificationsdevice.asp
* tag 'tee-drv-dynamic-shm-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee:
tee: shm: inline tee_shm_get_id()
tee: use reference counting for tee_context
tee: optee: enable dynamic SHM support
tee: optee: add optee-specific shared pool implementation
tee: optee: store OP-TEE capabilities in private data
tee: optee: add registered buffers handling into RPC calls
tee: optee: add registered shared parameters handling
tee: optee: add shared buffer registration functions
tee: optee: add page list manipulation functions
tee: optee: Update protocol definitions
tee: shm: add page accessor functions
tee: shm: add accessors for buffer size and page offset
tee: add register user memory
tee: flexible shared memory pool creation
This pull request enables asynchronous communication with TEE supplicant
by introducing meta parameters in the user space API. The meta
parameters can be used to tag requests with an id that can be matched
against an asynchronous response as is done here in the OP-TEE driver.
Asynchronous supplicant communication is needed by OP-TEE to implement
GlobalPlatforms TEE Sockets API Specification v1.0.1. The specification
is available at https://www.globalplatform.org/specificationsdevice.asp.
This change is backwards compatible allowing older supplicants to work
with newer kernels and vice versa.
-----BEGIN PGP SIGNATURE-----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=jsDo
-----END PGP SIGNATURE-----
Merge tag 'tee-drv-async-supplicant-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers
Pull "Enable async communication with tee supplicant" from Jens Wiklander:
This pull request enables asynchronous communication with TEE supplicant
by introducing meta parameters in the user space API. The meta
parameters can be used to tag requests with an id that can be matched
against an asynchronous response as is done here in the OP-TEE driver.
Asynchronous supplicant communication is needed by OP-TEE to implement
GlobalPlatforms TEE Sockets API Specification v1.0.1. The specification
is available at https://www.globalplatform.org/specificationsdevice.asp.
This change is backwards compatible allowing older supplicants to work
with newer kernels and vice versa.
* tag 'tee-drv-async-supplicant-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee:
optee: support asynchronous supplicant requests
tee: add TEE_IOCTL_PARAM_ATTR_META
tee: add tee_param_is_memref() for driver use
Previous patches added various features that are needed for dynamic SHM.
Dynamic SHM allows Normal World to share any buffers with OP-TEE.
While original design suggested to use pre-allocated region (usually of
1M to 2M of size), this new approach allows to use all non-secure RAM for
command buffers, RPC allocations and TA parameters.
This patch checks capability OPTEE_SMC_SEC_CAP_DYNAMIC_SHM. If it was set
by OP-TEE, then kernel part of OP-TEE will use kernel page allocator
to allocate command buffers. Also it will set TEE_GEN_CAP_REG_MEM
capability to tell userspace that it supports shared memory registration.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Those capabilities will be used in subsequent patches.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
With latest changes to OP-TEE we can use any buffers as a shared memory.
Thus, it is possible for supplicant to provide part of own memory
when OP-TEE asks to allocate a shared buffer.
This patch adds support for such feature into RPC handling code.
Now when OP-TEE asks supplicant to allocate shared buffer, supplicant
can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is
aware of this, so it will pass list of allocated pages to OP-TEE.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: fix parenthesis alignment in free_pages_list()]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Now, when client applications can register own shared buffers in OP-TEE,
we need to extend ABI for parameter passing to/from OP-TEE.
So, if OP-TEE core detects that parameter belongs to registered shared
memory, it will use corresponding parameter attribute.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This change adds ops for shm_(un)register functions in tee interface.
Client application can use these functions to (un)register an own shared
buffer in OP-TEE address space. This allows zero copy data sharing between
Normal and Secure Worlds.
Please note that while those functions were added to optee code,
it does not report to userspace that those functions are available.
OP-TEE code does not set TEE_GEN_CAP_REG_MEM flag. This flag will be
enabled only after all other features of dynamic shared memory will be
implemented in subsequent patches. Of course user can ignore presence of
TEE_GEN_CAP_REG_MEM flag and try do call those functions. This is okay,
driver will register shared buffer in OP-TEE, but any attempts to use
this shared buffer will fail.
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Adds support for asynchronous supplicant requests, meaning that the
supplicant can process several requests in parallel or block in a
request for some time.
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (b2260 pager=y/n)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The first node supplied to of_find_matching_node() has its reference
counter decreased as part of call to that function. In optee_driver_init()
after calling of_find_matching_node() it's invalid to call of_node_put() on
the supplied node again.
So remove the invalid call to of_node_put().
Reported-by: Alex Shi <alex.shi@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Add const to tee_desc structures as they are only passed as an argument
to the function tee_device_alloc. This argument is of type const, so
declare these structures as const too.
Add const to tee_driver_ops structures as they are only stored in the
ops field of a tee_desc structure. This field is of type const, so
declare these structure types as const.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Fixes the static checker warning in optee_release().
error: uninitialized symbol 'parg'.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Adds a OP-TEE driver which also can be compiled as a loadable module.
* Targets ARM and ARM64
* Supports using reserved memory from OP-TEE as shared memory
* Probes OP-TEE version using SMCs
* Accepts requests on privileged and unprivileged device
* Uses OPTEE message protocol version 2 to communicate with secure world
Acked-by: Andreas Dannenberg <dannenberg@ti.com>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (HiKey)
Tested-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> (RCAR H3)
Tested-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
