- OP-TEE - lists.trustedfirmware.org

by Don Harbin

Hi All, Note you may have received another instance of this note but when I attempted to send to all TF ML's simultaneously it seemed to fail, so sending to each one at a time. Sorry about that. :/ We've created a Discord Server for real time chats/sharing. This solution comes at no cost to the project, is set up with channels for each project, includes a #general channel, and supports direct 1-1 chats between members, all with the goal of improving collaboration between trustedfirmware.org developers. We encourage all to join! :) Instructions for joining can be found on the TF.org FAQ page <https://www.trustedfirmware.org/faq/>. See you all there and please don't hesitate to reach out if you have any questions! Don Harbin TrustedFirmware Community Manager don.harbin(a)linaro.org

3 years

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New TrustedFirmware Discord Server

by Don Harbin

Hi All, To all TF maillists in case all aren't yet aware. We've created a Discord Server for real time chats/sharing. This solution comes at no cost to the project, is set up with channels for each project, includes a #general channel, and supports direct 1-1 chats between members, all with the goal of improving collaboration between trustedfirmware.org developers. I've attached a recent screenshot from the #general channel as a sample of the interface and usages. We encourage all to join! :) Instructions for joining can be found on the TF.org FAQ page <https://www.trustedfirmware.org/faq/>. See you all there and please don't hesitate to reach out if you have any questions! Don Harbin TrustedFirmware Community Manager don.harbin(a)linaro.org

3 years

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[PATCH] tee: amdtee: add support for use of cma region

by Devaraj Rangasamy

In systems with low memory configuration, memory gets fragmented easily, and any bigger size contiguous memory allocations are likely to fail. Contiguous Memory Allocator (CMA) is used to overcome this limitation, and to guarantee memory allocations. This patch adds support for CMA area exclusive to amdtee. The support can be enabled if kernel have CONFIG_CMA enabled. The size can be set via the AMDTEE_CMA_SIZE config option at compile time or with the "amdtee_cma" kernel parameter. (e.g. "amdtee_cma=32 for 32MB"). Also, cma zone is utilized only for buffer allocation bigger than 64k bytes. When such allocation fails, there is a fallback to the buddy allocator. Since CMA requires a boot time initialization, it is enabled only when amdtee is built as an inbuilt driver. Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy(a)amd.com> Co-developed-by: SivaSangeetha SK <SivaSangeetha.SK(a)amd.com> Signed-off-by: SivaSangeetha SK <SivaSangeetha.SK(a)amd.com> Reviewed-by: Rijo Thomas <Rijo-john.Thomas(a)amd.com> --- .../admin-guide/kernel-parameters.txt | 7 ++ arch/x86/include/asm/setup.h | 6 ++ arch/x86/kernel/setup.c | 2 + drivers/tee/amdtee/Kconfig | 9 +++ drivers/tee/amdtee/Makefile | 1 + drivers/tee/amdtee/amdtee_private.h | 6 +- drivers/tee/amdtee/core.c | 6 +- drivers/tee/amdtee/shm_pool.c | 32 ++++++-- drivers/tee/amdtee/shm_pool_cma.c | 78 +++++++++++++++++++ drivers/tee/amdtee/shm_pool_cma.h | 38 +++++++++ 10 files changed, 176 insertions(+), 9 deletions(-) create mode 100644 drivers/tee/amdtee/shm_pool_cma.c create mode 100644 drivers/tee/amdtee/shm_pool_cma.h diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 722b6eca2e93..5e38423f3d53 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -363,6 +363,13 @@ selects a performance level in this range and appropriate to the current workload. + amdtee_cma=nn [HW,TEE] + Sets the memory size reserved for contiguous memory + allocations, to be used by amdtee device driver. + Value is in MB and can range from 4 to 128 (MBs) + CMA will be active only when CMA is enabled, and amdtee is + built as inbuilt driver, and not loaded as module. + amijoy.map= [HW,JOY] Amiga joystick support Map of devices attached to JOY0DAT and JOY1DAT Format: <a>,<b> diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index f3495623ac99..bb5e4b7134a2 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -66,6 +66,12 @@ extern void x86_ce4100_early_setup(void); static inline void x86_ce4100_early_setup(void) { } #endif +#if IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) +void amdtee_cma_reserve(void); +#else +static inline void amdtee_cma_reserve(void) { } +#endif + #ifndef _SETUP #include <asm/espfix.h> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index fd975a4a5200..e73433af3bfa 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1223,6 +1223,8 @@ void __init setup_arch(char **cmdline_p) initmem_init(); dma_contiguous_reserve(max_pfn_mapped << PAGE_SHIFT); + amdtee_cma_reserve(); + if (boot_cpu_has(X86_FEATURE_GBPAGES)) hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT); diff --git a/drivers/tee/amdtee/Kconfig b/drivers/tee/amdtee/Kconfig index 191f9715fa9a..5843c739a7b8 100644 --- a/drivers/tee/amdtee/Kconfig +++ b/drivers/tee/amdtee/Kconfig @@ -6,3 +6,12 @@ config AMDTEE depends on CRYPTO_DEV_SP_PSP && CRYPTO_DEV_CCP_DD help This implements AMD's Trusted Execution Environment (TEE) driver. + +config AMDTEE_CMA_SIZE + int "Size of Memory in MiB reserved in CMA for AMD-TEE" + default "0" + depends on CMA && (AMDTEE=y) + help + Specify the default amount of memory in MiB reserved in CMA for AMD-TEE driver + Any amdtee shm buffer allocation larger than 64k will allocate memory from the CMA + The default can be overridden with the kernel commandline parameter "amdtee_cma". \ No newline at end of file diff --git a/drivers/tee/amdtee/Makefile b/drivers/tee/amdtee/Makefile index ff1485266117..a197839cfcf3 100644 --- a/drivers/tee/amdtee/Makefile +++ b/drivers/tee/amdtee/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_AMDTEE) += amdtee.o amdtee-objs += core.o amdtee-objs += call.o amdtee-objs += shm_pool.o +amdtee-objs += shm_pool_cma.o diff --git a/drivers/tee/amdtee/amdtee_private.h b/drivers/tee/amdtee/amdtee_private.h index 6d0f7062bb87..9ba47795adb6 100644 --- a/drivers/tee/amdtee/amdtee_private.h +++ b/drivers/tee/amdtee/amdtee_private.h @@ -87,11 +87,13 @@ struct shmem_desc { * struct amdtee_shm_data - Shared memory data * @kaddr: Kernel virtual address of shared memory * @buf_id: Buffer id of memory mapped by TEE_CMD_ID_MAP_SHARED_MEM + * @is_cma: Indicates whether memory is allocated from cma region or not */ struct amdtee_shm_data { struct list_head shm_node; void *kaddr; u32 buf_id; + bool is_cma; }; /** @@ -145,9 +147,9 @@ int amdtee_invoke_func(struct tee_context *ctx, int amdtee_cancel_req(struct tee_context *ctx, u32 cancel_id, u32 session); -int amdtee_map_shmem(struct tee_shm *shm); +int amdtee_map_shmem(struct tee_shm *shm, bool is_cma); -void amdtee_unmap_shmem(struct tee_shm *shm); +void amdtee_unmap_shmem(struct tee_shm *shm, bool *is_cma); int handle_load_ta(void *data, u32 size, struct tee_ioctl_open_session_arg *arg); diff --git a/drivers/tee/amdtee/core.c b/drivers/tee/amdtee/core.c index 372d64756ed6..448802dccf13 100644 --- a/drivers/tee/amdtee/core.c +++ b/drivers/tee/amdtee/core.c @@ -336,7 +336,7 @@ int amdtee_close_session(struct tee_context *ctx, u32 session) return 0; } -int amdtee_map_shmem(struct tee_shm *shm) +int amdtee_map_shmem(struct tee_shm *shm, bool is_cma) { struct amdtee_context_data *ctxdata; struct amdtee_shm_data *shmnode; @@ -368,6 +368,7 @@ int amdtee_map_shmem(struct tee_shm *shm) shmnode->kaddr = shm->kaddr; shmnode->buf_id = buf_id; + shmnode->is_cma = is_cma; ctxdata = shm->ctx->data; mutex_lock(&ctxdata->shm_mutex); list_add(&shmnode->shm_node, &ctxdata->shm_list); @@ -378,7 +379,7 @@ int amdtee_map_shmem(struct tee_shm *shm) return 0; } -void amdtee_unmap_shmem(struct tee_shm *shm) +void amdtee_unmap_shmem(struct tee_shm *shm, bool *is_cma) { struct amdtee_context_data *ctxdata; struct amdtee_shm_data *shmnode; @@ -395,6 +396,7 @@ void amdtee_unmap_shmem(struct tee_shm *shm) mutex_lock(&ctxdata->shm_mutex); list_for_each_entry(shmnode, &ctxdata->shm_list, shm_node) if (buf_id == shmnode->buf_id) { + *is_cma = shmnode->is_cma; list_del(&shmnode->shm_node); kfree(shmnode); break; diff --git a/drivers/tee/amdtee/shm_pool.c b/drivers/tee/amdtee/shm_pool.c index f0303126f199..9aad401387be 100644 --- a/drivers/tee/amdtee/shm_pool.c +++ b/drivers/tee/amdtee/shm_pool.c @@ -7,19 +7,30 @@ #include <linux/tee_drv.h> #include <linux/psp.h> #include "amdtee_private.h" +#include "shm_pool_cma.h" static int pool_op_alloc(struct tee_shm_pool *pool, struct tee_shm *shm, size_t size, size_t align) { unsigned int order = get_order(size); unsigned long va; + bool is_cma = false; int rc; /* * Ignore alignment since this is already going to be page aligned * and there's no need for any larger alignment. */ - va = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order); + + /* if CMA is available, use it for higher order allocation */ + if (amdtee_get_cma_size() && order > 6) + va = amdtee_alloc_from_cma(shm, order); + + if (va) + is_cma = true; + else + va = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order); + if (!va) return -ENOMEM; @@ -28,9 +39,13 @@ static int pool_op_alloc(struct tee_shm_pool *pool, struct tee_shm *shm, shm->size = PAGE_SIZE << order; /* Map the allocated memory in to TEE */ - rc = amdtee_map_shmem(shm); + rc = amdtee_map_shmem(shm, is_cma); if (rc) { - free_pages(va, order); + if (is_cma) + amdtee_free_from_cma(shm); + else + free_pages(va, order); + shm->kaddr = NULL; return rc; } @@ -40,9 +55,16 @@ static int pool_op_alloc(struct tee_shm_pool *pool, struct tee_shm *shm, static void pool_op_free(struct tee_shm_pool *pool, struct tee_shm *shm) { + bool is_cma = false; + /* Unmap the shared memory from TEE */ - amdtee_unmap_shmem(shm); - free_pages((unsigned long)shm->kaddr, get_order(shm->size)); + amdtee_unmap_shmem(shm, &is_cma); + + if (is_cma) + amdtee_free_from_cma(shm); + else + free_pages((unsigned long)shm->kaddr, get_order(shm->size)); + shm->kaddr = NULL; } diff --git a/drivers/tee/amdtee/shm_pool_cma.c b/drivers/tee/amdtee/shm_pool_cma.c new file mode 100644 index 000000000000..99dda9adb1c6 --- /dev/null +++ b/drivers/tee/amdtee/shm_pool_cma.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright 2023 Advanced Micro Devices, Inc. + */ + +#if IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) + +#define pr_fmt(fmt) "%s: " fmt, __func__ + +#include <linux/cma.h> +#include <linux/mm.h> +#include <linux/tee_drv.h> +#include "shm_pool_cma.h" + +static struct cma *amdtee_cma; +unsigned long amdtee_cma_size __initdata = CONFIG_AMDTEE_CMA_SIZE * SZ_1M; + +static int __init early_parse_amdtee_cma(char *p) +{ + int cmd_size; + + if (!p) + return 1; + + cmd_size = memparse(p, NULL); + if (cmd_size >= 4 && cmd_size <= 256) + amdtee_cma_size = cmd_size * SZ_1M; + else + pr_err("invalid amdtee_cma size: %lu\n", amdtee_cma_size); + + return 0; +} +early_param("amdtee_cma", early_parse_amdtee_cma); + +void __init amdtee_cma_reserve(void) +{ + int ret; + + ret = cma_declare_contiguous(0, amdtee_cma_size, 0, 0, 0, false, "amdtee", &amdtee_cma); + if (ret) + pr_err("Failed to reserve CMA region of size %lu\n", amdtee_cma_size); + else + pr_info("Reserved %lu bytes CMA for amdtee\n", amdtee_cma_size); +} + +unsigned long amdtee_alloc_from_cma(struct tee_shm *shm, unsigned int order) +{ + struct page *page = NULL; + unsigned long va = 0; + int nr_pages = 0; + + if (amdtee_cma) { + nr_pages = 1 << order; + page = cma_alloc(amdtee_cma, nr_pages, 0, false); + if (page) + va = (unsigned long)page_to_virt(page); + else + pr_debug("failed to allocate from CMA region\n"); + } else { + pr_debug("CMA region is not available\n"); + } + return va; +} + +void amdtee_free_from_cma(struct tee_shm *shm) +{ + struct page *page; + int nr_pages = 0; + + if (amdtee_cma) { + nr_pages = 1 << get_order(shm->size); + page = virt_to_page(shm->kaddr); + cma_release(amdtee_cma, page, nr_pages); + } else { + pr_err("CMA region is not available\n"); + } +} +#endif /* IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) */ diff --git a/drivers/tee/amdtee/shm_pool_cma.h b/drivers/tee/amdtee/shm_pool_cma.h new file mode 100644 index 000000000000..d1cde11cbede --- /dev/null +++ b/drivers/tee/amdtee/shm_pool_cma.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: MIT */ + +/* + * Copyright 2023 Advanced Micro Devices, Inc. + */ + +#ifndef SHM_POOL_CMA_H +#define SHM_POOL_CMA_H + +#if IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) + +extern unsigned long amdtee_cma_size; + +static inline unsigned long amdtee_get_cma_size(void) +{ + return amdtee_cma_size; +} + +unsigned long amdtee_alloc_from_cma(struct tee_shm *shm, unsigned int order); + +void amdtee_free_from_cma(struct tee_shm *shm); + +#else /* IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) */ + +static inline unsigned long amdtee_get_cma_size(void) +{ + return 0; +} + +static inline unsigned long amdtee_alloc_from_cma(struct tee_shm *shm, unsigned int order) +{ + return 0; +} + +static inline void amdtee_free_from_cma(struct tee_shm *shm) { } + +#endif /* IS_BUILTIN(CONFIG_AMDTEE) && IS_ENABLED(CONFIG_CMA) */ +#endif /* SHM_POOL_CMA_H */ -- 2.25.1

3 years

4
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Optee + OpenSSH/OpenSSL

by Hareesh Das Ulleri

Hello all, We are started using Op-tee in our project. Since we are new to Op-tee, could someone please confirm whether anyone has already tried below in their project or is it possible to use along with OpenSSH/OpenSSL ? What we try to accomplish is: application/sshd -> openssl (libcrypto/provider) -> Optee (client/TA) -> (HW or SW cipher algorithm) for data encryption/decryption. Thanks, Hareesh

3 years

6
7
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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

3 years

9
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[PATCH] KEYS: trusted: tee: use tee_shm_register_alloc_buf()

by Jens Wiklander

Prior to this patch was trusted_tee_seal() and trusted_tee_get_random() relying on tee_shm_register_kernel_buf() to share memory with the TEE. Depending on the memory allocation pattern the pages holding the registered buffers overlap with other buffers also shared with the TEE. The OP-TEE driver using the old SMC based ABI permits overlapping shared buffers, but with the new FF-A based ABI each physical page may only be registered once. Fix this problem by allocating a temporary page aligned shared memory buffer to be used as a bounce buffer for the needed data buffers. Since TEE trusted keys doesn't depend on registered shared memory support any longer remove that explicit dependency when opening a context to the TEE. Signed-off-by: Jens Wiklander <jens.wiklander(a)linaro.org> --- security/keys/trusted-keys/trusted_tee.c | 68 +++++++++++++----------- 1 file changed, 36 insertions(+), 32 deletions(-) diff --git a/security/keys/trusted-keys/trusted_tee.c b/security/keys/trusted-keys/trusted_tee.c index ac3e270ade69..3085343c489a 100644 --- a/security/keys/trusted-keys/trusted_tee.c +++ b/security/keys/trusted-keys/trusted_tee.c @@ -8,6 +8,7 @@ #include <linux/err.h> #include <linux/key-type.h> +#include <linux/minmax.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/string.h> @@ -65,38 +66,37 @@ static int trusted_tee_seal(struct trusted_key_payload *p, char *datablob) int ret; struct tee_ioctl_invoke_arg inv_arg; struct tee_param param[4]; - struct tee_shm *reg_shm_in = NULL, *reg_shm_out = NULL; + struct tee_shm *shm; + uint8_t *buf; memset(&inv_arg, 0, sizeof(inv_arg)); memset(&param, 0, sizeof(param)); - reg_shm_in = tee_shm_register_kernel_buf(pvt_data.ctx, p->key, - p->key_len); - if (IS_ERR(reg_shm_in)) { - dev_err(pvt_data.dev, "key shm register failed\n"); - return PTR_ERR(reg_shm_in); + shm = tee_shm_alloc_kernel_buf(pvt_data.ctx, + p->key_len + sizeof(p->blob)); + if (IS_ERR(shm)) { + dev_err(pvt_data.dev, "key shm alloc failed\n"); + return PTR_ERR(shm); } - - reg_shm_out = tee_shm_register_kernel_buf(pvt_data.ctx, p->blob, - sizeof(p->blob)); - if (IS_ERR(reg_shm_out)) { - dev_err(pvt_data.dev, "blob shm register failed\n"); - ret = PTR_ERR(reg_shm_out); + buf = tee_shm_get_va(shm, 0); + if (IS_ERR(buf)) { + ret = PTR_ERR(buf); goto out; } + memcpy(buf, p->key, p->key_len); inv_arg.func = TA_CMD_SEAL; inv_arg.session = pvt_data.session_id; inv_arg.num_params = 4; param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT; - param[0].u.memref.shm = reg_shm_in; + param[0].u.memref.shm = shm; param[0].u.memref.size = p->key_len; param[0].u.memref.shm_offs = 0; param[1].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT; - param[1].u.memref.shm = reg_shm_out; + param[1].u.memref.shm = shm; param[1].u.memref.size = sizeof(p->blob); - param[1].u.memref.shm_offs = 0; + param[1].u.memref.shm_offs = p->key_len; ret = tee_client_invoke_func(pvt_data.ctx, &inv_arg, param); if ((ret < 0) || (inv_arg.ret != 0)) { @@ -104,14 +104,13 @@ static int trusted_tee_seal(struct trusted_key_payload *p, char *datablob) inv_arg.ret); ret = -EFAULT; } else { + memcpy(p->blob, buf + p->key_len, + min(param[1].u.memref.size, sizeof(p->blob))); p->blob_len = param[1].u.memref.size; } out: - if (reg_shm_out) - tee_shm_free(reg_shm_out); - if (reg_shm_in) - tee_shm_free(reg_shm_in); + tee_shm_free(shm); return ret; } @@ -166,11 +165,9 @@ static int trusted_tee_unseal(struct trusted_key_payload *p, char *datablob) p->key_len = param[1].u.memref.size; } + tee_shm_free(reg_shm_out); out: - if (reg_shm_out) - tee_shm_free(reg_shm_out); - if (reg_shm_in) - tee_shm_free(reg_shm_in); + tee_shm_free(reg_shm_in); return ret; } @@ -183,15 +180,21 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len) int ret; struct tee_ioctl_invoke_arg inv_arg; struct tee_param param[4]; - struct tee_shm *reg_shm = NULL; + struct tee_shm *shm; + void *buf; memset(&inv_arg, 0, sizeof(inv_arg)); memset(&param, 0, sizeof(param)); - reg_shm = tee_shm_register_kernel_buf(pvt_data.ctx, key, key_len); - if (IS_ERR(reg_shm)) { - dev_err(pvt_data.dev, "key shm register failed\n"); - return PTR_ERR(reg_shm); + shm = tee_shm_alloc_kernel_buf(pvt_data.ctx, key_len); + if (IS_ERR(shm)) { + dev_err(pvt_data.dev, "key shm alloc failed\n"); + return PTR_ERR(shm); + } + buf = tee_shm_get_va(shm, 0); + if (IS_ERR(buf)) { + ret = PTR_ERR(buf); + goto out; } inv_arg.func = TA_CMD_GET_RANDOM; @@ -199,7 +202,7 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len) inv_arg.num_params = 4; param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT; - param[0].u.memref.shm = reg_shm; + param[0].u.memref.shm = shm; param[0].u.memref.size = key_len; param[0].u.memref.shm_offs = 0; @@ -209,18 +212,19 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len) inv_arg.ret); ret = -EFAULT; } else { + memcpy(key, buf, min(param[0].u.memref.size, key_len)); ret = param[0].u.memref.size; } - tee_shm_free(reg_shm); +out: + tee_shm_free(shm); return ret; } static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data) { - if (ver->impl_id == TEE_IMPL_ID_OPTEE && - ver->gen_caps & TEE_GEN_CAP_REG_MEM) + if (ver->impl_id == TEE_IMPL_ID_OPTEE) return 1; else return 0; -- 2.34.1

3 years

2
11
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Linaro OP-TEE Contribution, LOC, monthly meeting August 22

by Jens Wiklander

Hi, Time flies, on Tuesday, August 22 it's for another LOC monthly meeting. For time and connection details see the calendar at https://www.trustedfirmware.org/meetings/ I'm happy to report that the Xen patches needed to run OP-TEE with FF-A have just been merged [1] and will be included in the next Xen release. With this, we may need to focus more on for how long we may hog the CPU with non-secure interrupts masked. [1] https://patchew.org/Xen/20230731121536.934239-1-jens.wiklander@linaro.org/#… Any other topics? Thanks, Jens

3 years

1
0
0 0

Run OP-TEE on Morello kernel issue

by Menna Mahmoud

Hi All, I have an issue with running OP-TEE on the Morello kernel, I posted it here: https://github.com/OP-TEE/optee_os/issues/6244 Can anyone help me? Thanks in advance, Menna

3 years

1
0
0 0

tpm2 device fail on u-boot

by Ruth Glushkin

Hi, I have u-boot based on u-boot 2021.04 I have configuration with fTPM of Microsoft enabled. I have a EVB board with Nuvoton chip. OPTee-OS is based on latest 3.22 upstream version with Nuvoton npcm platform configuration. If I take OPTee-OS without reading HUK from our PCR0 field from non-secured memory, the command works fine. If I add reading HUK, the command fails. Here is the error log: - U-Boot>tpm2 device optee optee: OP-TEE: revision 3.22 (a012b992) I/TC: Reserved shared memory is enabled I/TC: Dynamic shared memory is enabled I/TC: Normal World virtualization support is disabled I/TC: Asynchronous notifications are disabled E/TC:0 0 std_entry_with_parg:235 Bad arg address 0x7fce2000 Couldn't set TPM 0 (rc = 1) - All other commands of tpm2 that are not connected to fTPM works OK. After loading Linux, xtest works OK. Could you please help me? Thank you in advance, Margarita Glushkin

3 years

2
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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

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