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Thu, 17 Sep 2020 09:02:23 +0000 From: Gaurav Jain To: u-boot@lists.denx.de, Priyanka Jain Cc: Ruchika Gupta Subject: [PATCH v2 1/2] configs: lx2160a: Enable OPTEE support Date: Thu, 17 Sep 2020 14:31:56 +0530 Message-Id: <20200917090157.29099-2-gaurav.jain@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200917090157.29099-1-gaurav.jain@nxp.com> References: <20200917090157.29099-1-gaurav.jain@nxp.com> X-ClientProxiedBy: SG2PR01CA0144.apcprd01.prod.exchangelabs.com (2603:1096:4:8f::24) To AM5PR04MB3074.eurprd04.prod.outlook.com (2603:10a6:206:4::16) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv03326.swis.in-blr01.nxp.com (14.142.151.118) by SG2PR01CA0144.apcprd01.prod.exchangelabs.com (2603:1096:4:8f::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3391.13 via Frontend Transport; Thu, 17 Sep 2020 09:02:21 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [14.142.151.118] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 4ddae57f-e1dd-4568-3481-08d85ae863ee X-MS-TrafficTypeDiagnostic: AM5PR0402MB2706: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1923; 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Thu, 17 Sep 2020 09:02:35 +0000 From: Gaurav Jain To: u-boot@lists.denx.de, Priyanka Jain Cc: Ruchika Gupta Subject: [PATCH v2 2/2] cmd: optee_rpmb command for read/write of rpmb from optee Date: Thu, 17 Sep 2020 14:31:57 +0530 Message-Id: <20200917090157.29099-3-gaurav.jain@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200917090157.29099-1-gaurav.jain@nxp.com> References: <20200917090157.29099-1-gaurav.jain@nxp.com> X-ClientProxiedBy: SG2PR01CA0144.apcprd01.prod.exchangelabs.com (2603:1096:4:8f::24) To AM5PR04MB3074.eurprd04.prod.outlook.com (2603:10a6:206:4::16) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv03326.swis.in-blr01.nxp.com (14.142.151.118) by SG2PR01CA0144.apcprd01.prod.exchangelabs.com (2603:1096:4:8f::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3391.13 via Frontend Transport; Thu, 17 Sep 2020 09:02:33 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [14.142.151.118] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 2896c76a-1ab4-4aca-aa0d-08d85ae86af9 X-MS-TrafficTypeDiagnostic: AM5PR0402MB2706: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:655; 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This provides easy test for establishing a session with OPTEE TA and storage of persistent data in MMC RPMB. It includes following subcommands: optee_rpmb read_pvalue - read persistent values on rpmb via OPTEE AVB TA optee_rpmb write_pvalue - write persistent values on rpmb via OPTEE AVB TA Signed-off-by: Ruchika Gupta --- Notes: modified cmd_tbl_t to struct cmd_tbl as per command.h cmd/Kconfig | 8 ++ cmd/Makefile | 1 + cmd/optee_rpmb.c | 272 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 281 insertions(+) create mode 100644 cmd/optee_rpmb.c -- 2.17.1 diff --git a/cmd/Kconfig b/cmd/Kconfig index 0761dbb746..f2b631bce3 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1162,6 +1162,14 @@ config CMD_CLONE initial flashing by external block device without network or usb support. +config CMD_OPTEE_RPMB + bool "Enable read/write support on RPMB via OPTEE" + depends on SUPPORT_EMMC_RPMB && OPTEE + help + Enable the commands for reading, writing persistent named values + in the Replay Protection Memory Block partition in eMMC by + using Persistent Objects in OPTEE + config CMD_MTD bool "mtd" depends on MTD diff --git a/cmd/Makefile b/cmd/Makefile index 3a9c9747c9..acb048d7bf 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -96,6 +96,7 @@ obj-$(CONFIG_CMD_MII) += mii.o obj-$(CONFIG_CMD_MDIO) += mdio.o obj-$(CONFIG_CMD_MISC) += misc.o obj-$(CONFIG_CMD_MMC) += mmc.o +obj-$(CONFIG_CMD_OPTEE_RPMB) += optee_rpmb.o obj-$(CONFIG_MP) += mp.o obj-$(CONFIG_CMD_MTD) += mtd.o obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o diff --git a/cmd/optee_rpmb.c b/cmd/optee_rpmb.c new file mode 100644 index 0000000000..8d9ab70c2c --- /dev/null +++ b/cmd/optee_rpmb.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 NXP + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct udevice *tee; +static u32 session; + +static int avb_ta_open_session(void) +{ + const struct tee_optee_ta_uuid uuid = TA_AVB_UUID; + struct tee_open_session_arg arg; + int rc; + + tee = tee_find_device(tee, NULL, NULL, NULL); + if (!tee) + return -ENODEV; + + memset(&arg, 0, sizeof(arg)); + tee_optee_ta_uuid_to_octets(arg.uuid, &uuid); + rc = tee_open_session(tee, &arg, 0, NULL); + if (!rc) + session = arg.session; + + return 0; +} + +static int invoke_func(u32 func, ulong num_param, struct tee_param *param) +{ + struct tee_invoke_arg arg; + + if (!tee) + if (avb_ta_open_session()) + return -ENODEV; + + memset(&arg, 0, sizeof(arg)); + arg.func = func; + arg.session = session; + + if (tee_invoke_func(tee, &arg, num_param, param)) + return -EFAULT; + switch (arg.ret) { + case TEE_SUCCESS: + return 0; + case TEE_ERROR_OUT_OF_MEMORY: + case TEE_ERROR_STORAGE_NO_SPACE: + return -ENOSPC; + case TEE_ERROR_ITEM_NOT_FOUND: + return -EIO; + case TEE_ERROR_TARGET_DEAD: + /* + * The TA has paniced, close the session to reload the TA + * for the next request. + */ + tee_close_session(tee, session); + tee = NULL; + return -EIO; + default: + return -EIO; + } +} + +static int read_persistent_value(const char *name, + size_t buffer_size, + u8 *out_buffer, + size_t *out_num_bytes_read) +{ + int rc = 0; + struct tee_shm *shm_name; + struct tee_shm *shm_buf; + struct tee_param param[2]; + size_t name_size = strlen(name) + 1; + + if (!tee) + if (avb_ta_open_session()) + return -ENODEV; + + rc = tee_shm_alloc(tee, name_size, + TEE_SHM_ALLOC, &shm_name); + if (rc) + return -ENOMEM; + + rc = tee_shm_alloc(tee, buffer_size, + TEE_SHM_ALLOC, &shm_buf); + if (rc) { + rc = -ENOMEM; + goto free_name; + } + + memcpy(shm_name->addr, name, name_size); + + memset(param, 0, sizeof(param)); + param[0].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; + param[0].u.memref.shm = shm_name; + param[0].u.memref.size = name_size; + param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INOUT; + param[1].u.memref.shm = shm_buf; + param[1].u.memref.size = buffer_size; + + rc = invoke_func(TA_AVB_CMD_READ_PERSIST_VALUE, + 2, param); + if (rc) + goto out; + + if (param[1].u.memref.size > buffer_size) { + rc = -EINVAL; + goto out; + } + + *out_num_bytes_read = param[1].u.memref.size; + + memcpy(out_buffer, shm_buf->addr, *out_num_bytes_read); + +out: + tee_shm_free(shm_buf); +free_name: + tee_shm_free(shm_name); + + return rc; +} + +static int write_persistent_value(const char *name, + size_t value_size, + const u8 *value) +{ + int rc = 0; + struct tee_shm *shm_name; + struct tee_shm *shm_buf; + struct tee_param param[2]; + size_t name_size = strlen(name) + 1; + + if (!tee) { + if (avb_ta_open_session()) + return -ENODEV; + } + if (!value_size) + return -EINVAL; + + rc = tee_shm_alloc(tee, name_size, + TEE_SHM_ALLOC, &shm_name); + if (rc) + return -ENOMEM; + + rc = tee_shm_alloc(tee, value_size, + TEE_SHM_ALLOC, &shm_buf); + if (rc) { + rc = -ENOMEM; + goto free_name; + } + + memcpy(shm_name->addr, name, name_size); + memcpy(shm_buf->addr, value, value_size); + + memset(param, 0, sizeof(param)); + param[0].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; + param[0].u.memref.shm = shm_name; + param[0].u.memref.size = name_size; + param[1].attr = TEE_PARAM_ATTR_TYPE_MEMREF_INPUT; + param[1].u.memref.shm = shm_buf; + param[1].u.memref.size = value_size; + + rc = invoke_func(TA_AVB_CMD_WRITE_PERSIST_VALUE, + 2, param); + if (rc) + goto out; + +out: + tee_shm_free(shm_buf); +free_name: + tee_shm_free(shm_name); + + return rc; +} + +int do_optee_rpmb_read(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + const char *name; + size_t bytes; + size_t bytes_read; + void *buffer; + char *endp; + + if (argc != 3) + return CMD_RET_USAGE; + + name = argv[1]; + bytes = simple_strtoul(argv[2], &endp, 10); + if (*endp && *endp != '\n') + return CMD_RET_USAGE; + + buffer = malloc(bytes); + if (!buffer) + return CMD_RET_FAILURE; + + if (read_persistent_value(name, bytes, buffer, &bytes_read) == 0) { + printf("Read %zu bytes, value = %s\n", bytes_read, + (char *)buffer); + free(buffer); + return CMD_RET_SUCCESS; + } + + printf("Failed to read persistent value\n"); + + free(buffer); + + return CMD_RET_FAILURE; +} + +int do_optee_rpmb_write(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + const char *name; + const char *value; + + if (argc != 3) + return CMD_RET_USAGE; + + name = argv[1]; + value = argv[2]; + + if (write_persistent_value(name, strlen(value) + 1, + (const uint8_t *)value) == 0) { + printf("Wrote %zu bytes\n", strlen(value) + 1); + return CMD_RET_SUCCESS; + } + + printf("Failed to write persistent value\n"); + + return CMD_RET_FAILURE; +} + +static struct cmd_tbl cmd_optee_rpmb[] = { + U_BOOT_CMD_MKENT(read_pvalue, 3, 0, do_optee_rpmb_read, "", ""), + U_BOOT_CMD_MKENT(write_pvalue, 3, 0, do_optee_rpmb_write, "", ""), +}; + +static int do_optee_rpmb(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + struct cmd_tbl *cp; + + cp = find_cmd_tbl(argv[1], cmd_optee_rpmb, ARRAY_SIZE(cmd_optee_rpmb)); + + argc--; + argv++; + + if (!cp || argc > cp->maxargs) + return CMD_RET_USAGE; + + if (flag == CMD_FLAG_REPEAT) + return CMD_RET_FAILURE; + + return cp->cmd(cmdtp, flag, argc, argv); +} + +U_BOOT_CMD( + optee_rpmb, 29, 0, do_optee_rpmb, + "Provides commands for testing secure storage on RPMB on OPTEE", + "read_pvalue - read a persistent value \n" + "optee_rpmb write_pvalue - write a persistent value \n" + );