Enable "hello_world_ta" command which increments the value passed. This provides easy test for establishing a session with OPTEE TA and verify.
It includes following subcommands: hello_world_ta write_value value: value to increment via OPTEE HELLO WORLD TA.
To enable the OPTEE side HELLO WORLD example please refer https://optee.readthedocs.io/en/latest/building/gits/optee_examples/optee_ex...
Signed-off-by: Venkatesh Yadav Abbarapu venkatesh.abbarapu@amd.com --- cmd/Kconfig | 8 ++++ cmd/Makefile | 1 + cmd/optee_hello_world_ta.c | 98 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 107 insertions(+) create mode 100644 cmd/optee_hello_world_ta.c
diff --git a/cmd/Kconfig b/cmd/Kconfig index 1d7ddb4ed36..f1f8d1b9571 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1446,6 +1446,14 @@ config CMD_OPTEE_RPMB in the Replay Protection Memory Block partition in eMMC by using Persistent Objects in OPTEE
+config CMD_OPTEE_HELLO_WORLD + bool "Enable Hello world TA" + depends on OPTEE + default y + help + Enable the hello world ta command to test the OPTEE by passing + a "value" which should increment by OPTEE TA example. + config CMD_MTD bool "mtd" depends on MTD diff --git a/cmd/Makefile b/cmd/Makefile index d1f369deec0..049147a1442 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -118,6 +118,7 @@ obj-$(CONFIG_CMD_PAUSE) += pause.o obj-$(CONFIG_CMD_SLEEP) += sleep.o obj-$(CONFIG_CMD_MMC) += mmc.o obj-$(CONFIG_CMD_OPTEE_RPMB) += optee_rpmb.o +obj-$(CONFIG_CMD_OPTEE_HELLO_WORLD) += optee_hello_world_ta.o obj-$(CONFIG_CMD_MP) += mp.o obj-$(CONFIG_CMD_MTD) += mtd.o obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o diff --git a/cmd/optee_hello_world_ta.c b/cmd/optee_hello_world_ta.c new file mode 100644 index 00000000000..54342b90812 --- /dev/null +++ b/cmd/optee_hello_world_ta.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) Copyright 2024, Advanced Micro Devices, Inc. + */ +#include <command.h> +#include <errno.h> +#include <tee.h> +#include <vsprintf.h> + +static struct udevice *tee; +static u32 session; + +#define TA_HELLO_WORLD_CMD_INC_VALUE 0 +/* This needs to match the UUID of the Hello World TA. */ +#define TA_HELLO_WORLD_UUID \ + { 0x8aaaf200, 0x2450, 0x11e4, \ + { 0xab, 0xe2, 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b} } + +static int hello_world_ta_open_session(void) +{ + const struct tee_optee_ta_uuid uuid = TA_HELLO_WORLD_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 hello_world_ta(unsigned int value) +{ + struct tee_param param[2]; + struct tee_invoke_arg arg; + int status = -EACCES; + + printf("The Hello World TA is going to be called\n"); + + status = hello_world_ta_open_session(); + if (status) { + printf("HellWorldTA: OpenSession FAILED!\n"); + return status; + } + + arg.func = TA_HELLO_WORLD_CMD_INC_VALUE; + arg.session = session; + + param[0].attr = TEE_PARAM_ATTR_TYPE_VALUE_INOUT; + param[0].u.value.a = value; + + printf("TA value: %d\n", (int)param[0].u.value.a); + + tee_invoke_func(tee, &arg, 1, param); + + printf("TA value: %d\n", (int)param[0].u.value.a); + + tee_invoke_func(tee, &arg, 1, param); + + printf("TA value: %d\n", (int)param[0].u.value.a); + + status = tee_close_session(tee, session); + + return status; +} + +static int do_optee_hello_world_ta(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + int ret; + int value; + + if (argc != cmdtp->maxargs) { + debug("hello_world_ta: incorrect parameters passed\n"); + return CMD_RET_USAGE; + } + + value = dectoul(argv[1], NULL); + ret = hello_world_ta(value); + if (ret) + return CMD_RET_FAILURE; + + return CMD_RET_SUCCESS; +} + +U_BOOT_LONGHELP(optee_hello_world_ta, + "write_value value - Write value to increment\n" + "Command for testing Hello World OPTEE TA\n" + "pass the 'value' which needs to increment from OPTEE world\n"); + +U_BOOT_CMD_WITH_SUBCMDS(hello_world_ta, "OPTEE hello world TA", optee_hello_world_ta_help_text, + U_BOOT_SUBCMD_MKENT(write_value, 2, 1, do_optee_hello_world_ta));