July 2023 - OP-TEE - lists.trustedfirmware.org

Re: rk3399 issue: no DMA in Linux with mainline TF-A and U-Boot SPL

by kever.yang＠rock-chips.com

The content of this message was lost. It was probably cross-posted to multiple lists and previously handled on another list.

3 months

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[PATCH v2] tee: optee: Fix supplicant based device enumeration

by Sumit Garg

Currently supplicant dependent optee device enumeration only registers devices whenever tee-supplicant is invoked for the first time. But it forgets to remove devices when tee-supplicant daemon stops running and closes its context gracefully. This leads to following error for fTPM driver during reboot/shutdown: [ 73.466791] tpm tpm0: ftpm_tee_tpm_op_send: SUBMIT_COMMAND invoke error: 0xffff3024 Fix this by separating supplicant dependent devices so that the user-space service can detach supplicant devices before closing the supplicant. While at it use the global system workqueue for OP-TEE bus scanning work rather than our own custom one. Reported-by: Jan Kiszka <jan.kiszka(a)siemens.com> Link: https://github.com/OP-TEE/optee_os/issues/6094 Fixes: 5f178bb71e3a ("optee: enable support for multi-stage bus enumeration") Signed-off-by: Sumit Garg <sumit.garg(a)linaro.org> --- Changes in v2: Apologies for taking it too long push this v2. Actually I did brainstorm how to best fix this tee-supplicant dependent device probing. Its hard to predict the lifetime of user-space daemon from kernel space. So following is the least intrusive approach: - Use device names to seperate out tee-supplicant dependent devices via this patch. - Since user-space service is aware about tee-supplicant lifespan, so allow the user-space service to unbind tee-supplicant dependent devices before killing the supplicant. Following command has to be added to the tee-supplicant service file. $ for dev in /sys/bus/tee/devices/*; do if [[ "$dev" == *"optee-ta-supp-"* ]]; \ then echo $(basename "$dev") > $dev/driver/unbind; fi done drivers/tee/optee/core.c | 13 ++----------- drivers/tee/optee/device.c | 13 ++++++++++--- drivers/tee/optee/optee_private.h | 2 -- 3 files changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c index d01ca47f7bde..8ee3c71bd989 100644 --- a/drivers/tee/optee/core.c +++ b/drivers/tee/optee/core.c @@ -15,7 +15,6 @@ #include <linux/string.h> #include <linux/tee_drv.h> #include <linux/types.h> -#include <linux/workqueue.h> #include "optee_private.h" int optee_pool_op_alloc_helper(struct tee_shm_pool *pool, struct tee_shm *shm, @@ -110,12 +109,7 @@ int optee_open(struct tee_context *ctx, bool cap_memref_null) if (!optee->scan_bus_done) { INIT_WORK(&optee->scan_bus_work, optee_bus_scan); - optee->scan_bus_wq = create_workqueue("optee_bus_scan"); - if (!optee->scan_bus_wq) { - kfree(ctxdata); - return -ECHILD; - } - queue_work(optee->scan_bus_wq, &optee->scan_bus_work); + schedule_work(&optee->scan_bus_work); optee->scan_bus_done = true; } } @@ -159,10 +153,7 @@ void optee_release_supp(struct tee_context *ctx) struct optee *optee = tee_get_drvdata(ctx->teedev); optee_release_helper(ctx, optee_close_session_helper); - if (optee->scan_bus_wq) { - destroy_workqueue(optee->scan_bus_wq); - optee->scan_bus_wq = NULL; - } + optee_supp_release(&optee->supp); } diff --git a/drivers/tee/optee/device.c b/drivers/tee/optee/device.c index 64f0e047c23d..78fc0a15c463 100644 --- a/drivers/tee/optee/device.c +++ b/drivers/tee/optee/device.c @@ -60,9 +60,10 @@ static void optee_release_device(struct device *dev) kfree(optee_device); } -static int optee_register_device(const uuid_t *device_uuid) +static int optee_register_device(const uuid_t *device_uuid, u32 func) { struct tee_client_device *optee_device = NULL; + const char *dev_name_fmt = NULL; int rc; optee_device = kzalloc(sizeof(*optee_device), GFP_KERNEL); @@ -71,7 +72,13 @@ static int optee_register_device(const uuid_t *device_uuid) optee_device->dev.bus = &tee_bus_type; optee_device->dev.release = optee_release_device; - if (dev_set_name(&optee_device->dev, "optee-ta-%pUb", device_uuid)) { + + if (func == PTA_CMD_GET_DEVICES_SUPP) + dev_name_fmt = "optee-ta-supp-%pUb"; + else + dev_name_fmt = "optee-ta-%pUb"; + + if (dev_set_name(&optee_device->dev, dev_name_fmt, device_uuid)) { kfree(optee_device); return -ENOMEM; } @@ -142,7 +149,7 @@ static int __optee_enumerate_devices(u32 func) num_devices = shm_size / sizeof(uuid_t); for (idx = 0; idx < num_devices; idx++) { - rc = optee_register_device(&device_uuid[idx]); + rc = optee_register_device(&device_uuid[idx], func); if (rc) goto out_shm; } diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h index 6dcecb83c893..af4aa266c3fb 100644 --- a/drivers/tee/optee/optee_private.h +++ b/drivers/tee/optee/optee_private.h @@ -193,7 +193,6 @@ struct optee_ops { * @pool: shared memory pool * @rpc_param_count: If > 0 number of RPC parameters to make room for * @scan_bus_done flag if device registation was already done. - * @scan_bus_wq workqueue to scan optee bus and register optee drivers * @scan_bus_work workq to scan optee bus and register optee drivers */ struct optee { @@ -212,7 +211,6 @@ struct optee { struct tee_shm_pool *pool; unsigned int rpc_param_count; bool scan_bus_done; - struct workqueue_struct *scan_bus_wq; struct work_struct scan_bus_work; }; -- 2.34.1

9 months, 2 weeks

4
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[RFC, PATCH 0/1] Replay Protected Memory Block (RPMB) driver

by Shyam Saini

Hi everyone, This is yet another attempt to come up with an RPMB API for the kernel. This patch is based on patch 1 of last submission except few minor changes. The last discussion of this was in the thread: Subject: [PATCH v2 1/4] rpmb: add Replay Protected Memory Block (RPMB) subsystem Date: Tue, 5 Apr 2022 10:37:56 +0100 [thread overview] Message-ID: <20220405093759.1126835-2-alex.bennee(a)linaro.org> The patch provides a simple RPMB driver. This is a RFC version and this single driver can't be used by its own. It would require further work to make use of API's provided by this driver. Changes since the last posting: drop RPMB char driver drop virtio rpmb frontend driver drop rpmb: add RPBM access tool Rename get_write_count to get_write_counter Make return type for rpmb_set_key() function explicit Alex Bennée (1): rpmb: add Replay Protected Memory Block (RPMB) driver MAINTAINERS | 7 + drivers/Kconfig | 1 + drivers/Makefile | 2 + drivers/rpmb/Kconfig | 11 ++ drivers/rpmb/Makefile | 7 + drivers/rpmb/core.c | 439 ++++++++++++++++++++++++++++++++++++++++++ include/linux/rpmb.h | 182 +++++++++++++++++ 7 files changed, 649 insertions(+) create mode 100644 drivers/rpmb/Kconfig create mode 100644 drivers/rpmb/Makefile create mode 100644 drivers/rpmb/core.c create mode 100644 include/linux/rpmb.h -- 2.34.1

11 months, 1 week

9
20
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[PATCH v7 0/5] introduce tee-based EFI Runtime Variable Service

by Masahisa Kojima

This series introduces the tee based EFI Runtime Variable Service. The eMMC device is typically owned by the non-secure world(linux in this case). There is an existing solution utilizing eMMC RPMB partition for EFI Variables, it is implemented by interacting with OP-TEE, StandaloneMM(as EFI Variable Service Pseudo TA), eMMC driver and tee-supplicant. The last piece is the tee-based variable access driver to interact with OP-TEE and StandaloneMM. Changelog: v6 -> v7 Patch #1-#4 are not updated. Patch #5 is added into this series, original patch is here: https://lore.kernel.org/all/20230609094532.562934-1-ilias.apalodimas@linaro… There are two issues in the v6 series and v7 series addresses those. 1) efivar ops is not restored when the tee-supplicant daemon terminates. -> As the following patch says, user must remove the device before terminating tee-supplicant daemon. https://lore.kernel.org/all/20230728134832.326467-1-sumit.garg@linaro.org/ 2) cause panic when someone remounts the efivarfs as RW even if SetVariable is not supported -> The fifth patch addresses this issue. "[PATCH v7 5/5] efivarfs: force RO when remounting if SetVariable is not supported" Changelog: v5 -> v6 - new patch #4 is added in this series, #1-#3 patches are unchanged. automatically update super block flag when the efivarops support SetVariable runtime service, so that user does not need to manually remount the efivarfs as RW. v4 -> v5 - rebase to efi-next based on v6.4-rc1 - set generic_ops.query_variable_info, it works as expected as follows. $ df -h /sys/firmware/efi/efivars/ Filesystem Size Used Avail Use% Mounted on efivarfs 16K 1.3K 15K 8% /sys/firmware/efi/efivars v3 -> v4: - replace the reference from EDK2 to PI Specification - remove EDK2 source code reference comments - prepare nonblocking variant of set_variable, it just returns EFI_UNSUPPORTED - remove redundant buffer size check - argument name change in mm_communicate - function interface changes in setup_mm_hdr to remove (void **) cast v2 -> v3: - add CONFIG_EFI dependency to TEE_STMM_EFI - add missing return code check for tee_client_invoke_func() - directly call efivars_register/unregister from tee_stmm_efi.c rfc v1 -> v2: - split patch into three patches, one for drivers/tee, one for include/linux/efi.h, and one for the driver/firmware/efi/stmm - context/session management into probe() and remove() same as other tee client driver - StMM variable driver is moved from driver/tee/optee to driver/firmware/efi - use "tee" prefix instead of "optee" in driver/firmware/efi/stmm/tee_stmm_efi.c, this file does not contain op-tee specific code, abstracted by tee layer and StMM variable driver will work on other tee implementation. - PTA_STMM_CMD_COMMUNICATE -> PTA_STMM_CMD_COMMUNICATE - implement query_variable_store() but currently not used - no use of TEEC_SUCCESS, it is defined in driver/tee/optee/optee_private.h. Other tee client drivers use 0 instead of using TEEC_SUCCESS - remove TEEC_ERROR_EXCESS_DATA status, it is referred just to output error message Ilias Apalodimas (1): efivarfs: force RO when remounting if SetVariable is not supported Masahisa Kojima (4): efi: expose efivar generic ops register function efi: Add EFI_ACCESS_DENIED status code efi: Add tee-based EFI variable driver efivarfs: automatically update super block flag drivers/firmware/efi/Kconfig | 15 + drivers/firmware/efi/Makefile | 1 + drivers/firmware/efi/efi.c | 18 + drivers/firmware/efi/stmm/mm_communication.h | 236 +++++++ drivers/firmware/efi/stmm/tee_stmm_efi.c | 638 +++++++++++++++++++ drivers/firmware/efi/vars.c | 8 + fs/efivarfs/super.c | 45 ++ include/linux/efi.h | 12 + 8 files changed, 973 insertions(+) create mode 100644 drivers/firmware/efi/stmm/mm_communication.h create mode 100644 drivers/firmware/efi/stmm/tee_stmm_efi.c base-commit: 2e28a798c3092ea42b968fa16ac835969d124898 -- 2.30.2

11 months, 4 weeks

5
12
0 0

[PATCH v6 0/4] introduce tee-based EFI Runtime Variable Service

by Masahisa Kojima

This series introduces the tee based EFI Runtime Variable Service. The eMMC device is typically owned by the non-secure world(linux in this case). There is an existing solution utilizing eMMC RPMB partition for EFI Variables, it is implemented by interacting with OP-TEE, StandaloneMM(as EFI Variable Service Pseudo TA), eMMC driver and tee-supplicant. The last piece is the tee-based variable access driver to interact with OP-TEE and StandaloneMM. Changelog: v5 -> v6 - new patch #4 is added in this series, #1-#3 patches are unchanged. automatically update super block flag when the efivarops support SetVariable runtime service, so that user does not need to manually remount the efivarfs as RW. v4 -> v5 - rebase to efi-next based on v6.4-rc1 - set generic_ops.query_variable_info, it works as expected as follows. $ df -h /sys/firmware/efi/efivars/ Filesystem Size Used Avail Use% Mounted on efivarfs 16K 1.3K 15K 8% /sys/firmware/efi/efivars v3 -> v4: - replace the reference from EDK2 to PI Specification - remove EDK2 source code reference comments - prepare nonblocking variant of set_variable, it just returns EFI_UNSUPPORTED - remove redundant buffer size check - argument name change in mm_communicate - function interface changes in setup_mm_hdr to remove (void **) cast v2 -> v3: - add CONFIG_EFI dependency to TEE_STMM_EFI - add missing return code check for tee_client_invoke_func() - directly call efivars_register/unregister from tee_stmm_efi.c rfc v1 -> v2: - split patch into three patches, one for drivers/tee, one for include/linux/efi.h, and one for the driver/firmware/efi/stmm - context/session management into probe() and remove() same as other tee client driver - StMM variable driver is moved from driver/tee/optee to driver/firmware/efi - use "tee" prefix instead of "optee" in driver/firmware/efi/stmm/tee_stmm_efi.c, this file does not contain op-tee specific code, abstracted by tee layer and StMM variable driver will work on other tee implementation. - PTA_STMM_CMD_COMMUNICATE -> PTA_STMM_CMD_COMMUNICATE - implement query_variable_store() but currently not used - no use of TEEC_SUCCESS, it is defined in driver/tee/optee/optee_private.h. Other tee client drivers use 0 instead of using TEEC_SUCCESS - remove TEEC_ERROR_EXCESS_DATA status, it is referred just to output error message Masahisa Kojima (4): efi: expose efivar generic ops register function efi: Add EFI_ACCESS_DENIED status code efi: Add tee-based EFI variable driver efivarfs: automatically update super block flag drivers/firmware/efi/Kconfig | 15 + drivers/firmware/efi/Makefile | 1 + drivers/firmware/efi/efi.c | 18 + drivers/firmware/efi/stmm/mm_communication.h | 236 +++++++ drivers/firmware/efi/stmm/tee_stmm_efi.c | 638 +++++++++++++++++++ drivers/firmware/efi/vars.c | 8 + fs/efivarfs/super.c | 33 + include/linux/efi.h | 12 + 8 files changed, 961 insertions(+) create mode 100644 drivers/firmware/efi/stmm/mm_communication.h create mode 100644 drivers/firmware/efi/stmm/tee_stmm_efi.c base-commit: d0a1865cf7e2211d9227592ef4141f4632e33908 -- 2.30.2

1 year

3
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OP-TEE 3.22.0 has been released

by Joakim Bech

Hi, I'm pleased to announce that OP-TEE version 3.22.0 is now available. The list of changes can be found in the changelog [1]. The branch for stable can be found here [2]. Tested platforms in this release can be found here [3]. Many thanks to everyone who has contributed in any form to this release. Let me also highlight that because many people are on vacation over the summer, we cancelled the Linaro OP-TEE call for the month of July. Having said that, we have coverage for maintenance tasks and security issues. However, due to the reduced workforce, getting attention for reviewing and merging may take a little longer in the coming weeks. [1] https://github.com/OP-TEE/optee_os/blob/master/CHANGELOG.md [2] https://github.com/OP-TEE/manifest/tree/3.22.0 [3] https://github.com/OP-TEE/optee_os/commit/001ace6655dd6bb9cbe31aa31b4ba6974… -- Regards, Joakim

1 year

2
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core: fix fragmented memory retrieve

by 梅建强(禹夜)

Hi, Jens, The PR has been updated as requested. https://github.com/OP-TEE/optee_os/pull/5966 <https://github.com/OP-TEE/optee_os/pull/5966 > Regards, Yuye. ------------------------------------------------------------------ 发件人：Jens Wiklander <jens.wiklander(a)linaro.org> 发送时间：2023年7月3日(星期一) 15:20 收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> 抄　送：op-tee <op-tee(a)lists.trustedfirmware.org> 主　题：Re: core: fix fragmented memory retrieve Hi Yuye, On Mon, Jul 3, 2023 at 8:30 AM 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> wrote: > > > > > Hi, Jens, > > The previous fix was based on ffa_mem_transaction with ffa version 1.0, > now optee and Hafnium have updated ffa_mem_transaction to ffa 1.1. > But optee-driver in linaro-swg/linux seems to be using ffa version 1.0, > which causes incorrect data reading when the driver is doing mem_share to Hafnium. > I need to debug my previous code. > When will optee-driver synchronize this version change? Updating the SPMC version in the SPMC manifest should fix the issue of mismatching versions. By the way, I've started to update my QEMU S-EL2 setup to use upstream only. I'll propose updates for the manifest and build gits to be merged after the upcoming OP-TEE release. Cheers, Jens > > Regards, > Yuye. > > ------------------------------------------------------------------ > 发件人：Jens Wiklander <jens.wiklander(a)linaro.org> > 发送时间：2023年6月28日(星期三) 17:54 > 收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> > 抄送：op-tee <op-tee(a)lists.trustedfirmware.org> > 主题：Re: core: fix fragmented memory retrieve > > Hi Yuye, > > On Wed, Jun 28, 2023 at 11:50 AM 梅建强(禹夜) > <meijianqiang.mjq(a)alibaba-inc.com> wrote: > > > > > > > > > > Hi, Jens, > > > > Sorry for forgetting to revise the PR in time, because my github email changed so I haven't received any comments. > > Could you help me reopen the PR since I don't have the right? I will re-fix the problem as requested. > > Thanks. > > https://github.com/OP-TEE/optee_os/pull/5966 <https://github.com/OP-TEE/optee_os/pull/5966 > > > I've reopened it. > > Cheers, > Jens

1 year

1
0
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core: fix fragmented memory retrieve

by 梅建强(禹夜)

Hi, Jens, The previous fix was based on ffa_mem_transaction with ffa version 1.0, now optee and Hafnium have updated ffa_mem_transaction to ffa 1.1. But optee-driver in linaro-swg/linux seems to be using ffa version 1.0, which causes incorrect data reading when the driver is doing mem_share to Hafnium. I need to debug my previous code. When will optee-driver synchronize this version change? Regards, Yuye. ------------------------------------------------------------------ 发件人：Jens Wiklander <jens.wiklander(a)linaro.org> 发送时间：2023年6月28日(星期三) 17:54 收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> 抄　送：op-tee <op-tee(a)lists.trustedfirmware.org> 主　题：Re: core: fix fragmented memory retrieve Hi Yuye, On Wed, Jun 28, 2023 at 11:50 AM 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> wrote: > > > > > Hi, Jens, > > Sorry for forgetting to revise the PR in time, because my github email changed so I haven't received any comments. > Could you help me reopen the PR since I don't have the right? I will re-fix the problem as requested. > Thanks. > https://github.com/OP-TEE/optee_os/pull/5966 <https://github.com/OP-TEE/optee_os/pull/5966 > I've reopened it. Cheers, Jens

1 year

2
1
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core: fix fragmented memory retrieve

by 梅建强(禹夜)

Hi, Jens Since the optee driver has not been updated to ffa 1.1, I will first update the code with ffa 1.0. Regards, Yuye. ------------------------------------------------------------------ 发件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> 发送时间：2023年7月3日(星期一) 14:30 收件人：Jens Wiklander <jens.wiklander(a)linaro.org> 抄　送：op-tee <op-tee(a)lists.trustedfirmware.org> 主　题：core: fix fragmented memory retrieve Hi, Jens, The previous fix was based on ffa_mem_transaction with ffa version 1.0, now optee and Hafnium have updated ffa_mem_transaction to ffa 1.1. But optee-driver in linaro-swg/linux seems to be using ffa version 1.0, which causes incorrect data reading when the driver is doing mem_share to Hafnium. I need to debug my previous code. When will optee-driver synchronize this version change? Regards, Yuye. ------------------------------------------------------------------ 发件人：Jens Wiklander <jens.wiklander(a)linaro.org> 发送时间：2023年6月28日(星期三) 17:54 收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> 抄　送：op-tee <op-tee(a)lists.trustedfirmware.org> 主　题：Re: core: fix fragmented memory retrieve Hi Yuye, On Wed, Jun 28, 2023 at 11:50 AM 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com> wrote: > > > > > Hi, Jens, > > Sorry for forgetting to revise the PR in time, because my github email changed so I haven't received any comments. > Could you help me reopen the PR since I don't have the right? I will re-fix the problem as requested. > Thanks. > https://github.com/OP-TEE/optee_os/pull/5966 <https://github.com/OP-TEE/optee_os/pull/5966 > I've reopened it. Cheers, Jens

1 year

1
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OP-TEE July 2023