After TEE has completed processing of TEE_CMD_ID_LOAD_TA, set proper
value in 'return_origin' argument passed by open_session() call. To do
so, add 'return_origin' field to the structure tee_cmd_load_ta. The
Trusted OS shall update return_origin as part of TEE processing.
This change to 'struct tee_cmd_load_ta' interface requires a similar update
in AMD-TEE Trusted OS's TEE_CMD_ID_LOAD_TA interface.
This patch has been verified on Phoenix Birman setup. On older APUs,
return_origin value will be 0.
Cc: stable@vger.kernel.org
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Tested-by: Sourabh Das <sourabh.das@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
API:
- Total usage stats now include all that returned error (instead of some).
- Remove maximum hash statesize limit.
- Add cloning support for hmac and unkeyed hashes.
- Demote BUG_ON in crypto_unregister_alg to a WARN_ON.
Algorithms:
- Use RIP-relative addressing on x86 to prepare for PIE build.
- Add accelerated AES/GCM stitched implementation on powerpc P10.
- Add some test vectors for cmac(camellia).
- Remove failure case where jent is unavailable outside of FIPS mode in drbg.
- Add permanent and intermittent health error checks in jitter RNG.
Drivers:
- Add support for 402xx devices in qat.
- Add support for HiSTB TRNG.
- Fix hash concurrency issues in stm32.
- Add OP-TEE firmware support in caam.
-----BEGIN PGP SIGNATURE-----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=ITkW
-----END PGP SIGNATURE-----
Merge tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Total usage stats now include all that returned errors (instead of
just some)
- Remove maximum hash statesize limit
- Add cloning support for hmac and unkeyed hashes
- Demote BUG_ON in crypto_unregister_alg to a WARN_ON
Algorithms:
- Use RIP-relative addressing on x86 to prepare for PIE build
- Add accelerated AES/GCM stitched implementation on powerpc P10
- Add some test vectors for cmac(camellia)
- Remove failure case where jent is unavailable outside of FIPS mode
in drbg
- Add permanent and intermittent health error checks in jitter RNG
Drivers:
- Add support for 402xx devices in qat
- Add support for HiSTB TRNG
- Fix hash concurrency issues in stm32
- Add OP-TEE firmware support in caam"
* tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (139 commits)
i2c: designware: Add doorbell support for Mendocino
i2c: designware: Use PCI PSP driver for communication
powerpc: Move Power10 feature PPC_MODULE_FEATURE_P10
crypto: p10-aes-gcm - Remove POWER10_CPU dependency
crypto: testmgr - Add some test vectors for cmac(camellia)
crypto: cryptd - Add support for cloning hashes
crypto: cryptd - Convert hash to use modern init_tfm/exit_tfm
crypto: hmac - Add support for cloning
crypto: hash - Add crypto_clone_ahash/shash
crypto: api - Add crypto_clone_tfm
crypto: api - Add crypto_tfm_get
crypto: x86/sha - Use local .L symbols for code
crypto: x86/crc32 - Use local .L symbols for code
crypto: x86/aesni - Use local .L symbols for code
crypto: x86/sha256 - Use RIP-relative addressing
crypto: x86/ghash - Use RIP-relative addressing
crypto: x86/des3 - Use RIP-relative addressing
crypto: x86/crc32c - Use RIP-relative addressing
crypto: x86/cast6 - Use RIP-relative addressing
crypto: x86/cast5 - Use RIP-relative addressing
...
The TEE subdriver for CCP, the amdtee driver and the i2c-designware-amdpsp
drivers all include `psp-sev.h` even though they don't use SEV
functionality.
Move the definition of `__psp_pa` into a common header to be included
by all of these drivers.
Reviewed-by: Jan Dabros <jsd@semihalf.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> # For the drivers/i2c/busses/i2c-designware-amdpsp.c
Acked-by: Sumit Garg <sumit.garg@linaro.org> # For TEE subsystem bits
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Sean Christopherson <seanjc@google.com> # KVM
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There is a potential race condition in amdtee_open_session that may
lead to use-after-free. For instance, in amdtee_open_session() after
sess->sess_mask is set, and before setting:
sess->session_info[i] = session_info;
if amdtee_close_session() closes this same session, then 'sess' data
structure will be released, causing kernel panic when 'sess' is
accessed within amdtee_open_session().
The solution is to set the bit sess->sess_mask as the last step in
amdtee_open_session().
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Cc: stable@vger.kernel.org
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
- The TEE shared memory pool based on two pools is replaced with a single
somewhat more capable pool.
- Replaces tee_shm_alloc() and tee_shm_register() with new functions
easier to use and maintain. The TEE subsystem and the TEE drivers are
updated to use the new functions instead.
- The TEE based Trusted keys routines are updated to use the new
simplified functions above.
- The OP-TEE based rng driver is updated to use the new simplified
functions above.
- The TEE_SHM-flags are refactored to better match their usage
-----BEGIN PGP SIGNATURE-----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=xOBv
-----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmIY/jcACgkQmmx57+YA
GNk94w//VHkLJADLSqwh8AZXUwpBN3nCKtsEay7HbRmC9Nh4Zm/TQyYx79QmRnnK
kDxLVAFTapFLxQVo441jPfnjp2cSW0Oomhv3zLIPNE44Gb0jF+hqfbN3sLJLk5hZ
EiiRxnMEJ6KCbvLEXaSUqRfGoYkU98HF6vNzN0nme6Zq9f11GO7RsUGL1nLNrU7R
mGj4O1hr6QVWMCY5vvEYLkGZFj54jVb64UVYzmyw8Nt5IIbY2upCQFoeQYHtiIle
h354Wn3PgE+txzSKGGH0dw9hq2JPNFSwmx3psvw+9HUjYXGC8rfaJeRNTEC9oIaC
ALXqNnnu/kkhKt6rfkVaVuJFjefn/WjTCfEFyCRblwmNdi+DZfkcCkDh0Tj/4F6X
/hoLYC4XXt+bxvdi8I6+xH8ho+Zwsh3F9WXWAU+p1fR5/kOTpvYe10k+59lK+AUK
bbPCN2WQ+IB66Mt8OXAVRycXKrbGU32QTioWF7Jv5/ZgF1aTeAnzyoRnT9OI8FMz
sxqSNd/Lasc8czP+xdTrfisOy+7vRfSOPDgZ4BUVQLAZIDmuqiJo3Rtu4J72aZx2
Pyk680b3iGKORBGVFznF8DOWxNdbUbuQFxUzIGGKHtsy9++fyZzrwtjASmT9Bzef
ec6FVInEKt+f6nuMUZrMWRaWIZw3KGqWRnkX47k86PsCAh3HDvo=
=0vIF
-----END PGP SIGNATURE-----
Merge tag 'tee-shm-for-v5.18' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/drivers
TEE shared memory cleanup for v5.18
- The TEE shared memory pool based on two pools is replaced with a single
somewhat more capable pool.
- Replaces tee_shm_alloc() and tee_shm_register() with new functions
easier to use and maintain. The TEE subsystem and the TEE drivers are
updated to use the new functions instead.
- The TEE based Trusted keys routines are updated to use the new
simplified functions above.
- The OP-TEE based rng driver is updated to use the new simplified
functions above.
- The TEE_SHM-flags are refactored to better match their usage
* tag 'tee-shm-for-v5.18' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
tee: refactor TEE_SHM_* flags
tee: replace tee_shm_register()
KEYS: trusted: tee: use tee_shm_register_kernel_buf()
tee: add tee_shm_register_{user,kernel}_buf()
optee: add optee_pool_op_free_helper()
tee: replace tee_shm_alloc()
tee: simplify shm pool handling
tee: add tee_shm_alloc_user_buf()
tee: remove unused tee_shm_pool_alloc_res_mem()
hwrng: optee-rng: use tee_shm_alloc_kernel_buf()
optee: use driver internal tee_context for some rpc
Link: https://lore.kernel.org/r/20220218184802.GA968155@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Replaces the shared memory pool based on two pools with a single pool.
The alloc() function pointer in struct tee_shm_pool_ops gets another
parameter, align. This makes it possible to make less than page aligned
allocations from the optional reserved shared memory pool while still
making user space allocations page aligned. With in practice unchanged
behaviour using only a single pool for bookkeeping.
The allocation algorithm in the static OP-TEE shared memory pool is
changed from best-fit to first-fit since only the latter supports an
alignment parameter. The best-fit algorithm was previously the default
choice and not a conscious one.
The optee and amdtee drivers are updated as needed to work with this
changed pool handling.
This also removes OPTEE_SHM_NUM_PRIV_PAGES which becomes obsolete with
this change as the private pages can be mixed with the payload pages.
The OP-TEE driver changes minimum alignment for argument struct from 8
bytes to 512 bytes. A typical OP-TEE private shm allocation is 224 bytes
(argument struct with 6 parameters, needed for open session). So with an
alignment of 512 well waste a bit more than 50%. Before this we had a
single page reserved for this so worst case usage compared to that would
be 3 pages instead of 1 page. However, this worst case only occurs if
there is a high pressure from multiple threads on secure world. All in
all this should scale up and down better than fixed boundaries.
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Replace "struct list_head head = LIST_HEAD_INIT(head)" with
"LIST_HEAD(head)" to simplify the code.
Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev>
Reviewed-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The __get_free_pages() function does not return error pointers it returns
NULL so fix this condition to avoid a NULL dereference.
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Same Trusted Application (TA) can be loaded in multiple TEE contexts.
If it is a single instance TA, the TA should not get unloaded from AMD
Secure Processor, while it is still in use in another TEE context.
Therefore reference count TA and unload it when the count becomes zero.
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Reviewed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Synchronize access to shm or shared memory buffer list to prevent
race conditions due to concurrent updates to shared shm list by
multiple threads.
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Reviewed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The driver maintains a list of shared memory buffers along with their
mapped buffer id's in a global linked list. These buffers need to be
unmapped after use by the user-space client.
The global shared memory list is initialized to zero entries in the
function amdtee_open(). This clearing of list entries can be a source
for memory leak on secure side if the global linked list previously
held some mapped buffer entries allocated from another TEE context.
Fix potential memory leak issue by moving global shared memory list
to AMD-TEE driver context data structure.
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Reviewed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
The "index" is a user provided value from 0-USHRT_MAX. If it's over
TEE_NUM_SESSIONS (31) then it results in an out of bounds read when we
call test_bit(index, sess->sess_mask).
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Acked-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
- The compatible for Agilex GMAC should be "altr,socfpga-stmmac-a10-s10"
-----BEGIN PGP SIGNATURE-----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=VAHM
-----END PGP SIGNATURE-----
Merge tag 'socfpga_dts_fix_for_v5.6_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into arm/fixes
arm64: dts: agilex: fix gmac compatible
- The compatible for Agilex GMAC should be "altr,socfpga-stmmac-a10-s10"
* tag 'socfpga_dts_fix_for_v5.6_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux: (578 commits)
arm64: dts: socfpga: agilex: Fix gmac compatible
Linux 5.6-rc4
KVM: VMX: check descriptor table exits on instruction emulation
ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()
macintosh: therm_windtunnel: fix regression when instantiating devices
jbd2: fix data races at struct journal_head
kvm: x86: Limit the number of "kvm: disabled by bios" messages
KVM: x86: avoid useless copy of cpufreq policy
KVM: allow disabling -Werror
KVM: x86: allow compiling as non-module with W=1
KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis
KVM: Introduce pv check helpers
KVM: let declaration of kvm_get_running_vcpus match implementation
KVM: SVM: allocate AVIC data structures based on kvm_amd module parameter
MAINTAINERS: Correct Cadence PCI driver path
io_uring: fix 32-bit compatability with sendmsg/recvmsg
net: dsa: mv88e6xxx: Fix masking of egress port
mlxsw: pci: Wait longer before accessing the device after reset
sfc: fix timestamp reconstruction at 16-bit rollover points
vsock: fix potential deadlock in transport->release()
...
Link: https://lore.kernel.org/r/20200303153509.28248-1-dinguyen@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
On these error paths the "sess" variable isn't freed. It's a refcounted
pointer so we need to call kref_put(). I re-arranged the code a bit so
the error case is always handled before the success case and the error
paths are indented two tabs.
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Reviewed-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
If CRYPTO_DEV_CCP_DD=m and AMDTEE=y, the following error is seen
while building call.c or core.c
drivers/tee/amdtee/call.o: In function `handle_unload_ta':
call.c:(.text+0x35f): undefined reference to `psp_tee_process_cmd'
drivers/tee/amdtee/core.o: In function `amdtee_driver_init':
core.c:(.init.text+0xf): undefined reference to `psp_check_tee_status
Fix the config dependency for AMDTEE here.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
Reviewed-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Currently the memory allocation failure checks on drv_data and
amdtee are using IS_ERR rather than checking for a null pointer.
Fix these checks to use the conventional null pointer check.
Addresses-Coverity: ("Dereference null return")
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove NULL check for pool variable, since in the current
code path it is guaranteed to be non-NULL.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Rename err label to err_device_unregister for better
readability.
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Currently, if tee_device_alloc() fails, then tee_device_unregister()
is a no-op. Therefore, skip the function call to tee_device_unregister() by
introducing a new goto label 'err_free_pool'.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
If there is no TEE with which the driver can communicate, then
print an error message and return.
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove unused variable initialization from driver code.
If enabled as a compiler option, compiler may throw warning for
unused assignments.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 757cc3e9ff ("tee: add AMD-TEE driver")
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The AMD-TEE driver should check if TEE is available before
registering itself with TEE subsystem. This ensures that
there is a TEE which the driver can talk to before proceeding
with tee device node allocation.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Reviewed-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Adds AMD-TEE driver.
* targets AMD APUs which has AMD Secure Processor with software-based
Trusted Execution Environment (TEE) support
* registers with TEE subsystem
* defines tee_driver_ops function callbacks
* kernel allocated memory is used as shared memory between normal
world and secure world.
* acts as REE (Rich Execution Environment) communication agent, which
uses the services of AMD Secure Processor driver to submit commands
for processing in TEE environment
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Reviewed-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
