Provide armffa command showcasing the use of the U-Boot FF-A support
armffa is a command showcasing how to invoke FF-A operations. This provides a guidance to the client developers on how to call the FF-A bus interfaces. The command also allows to gather secure partitions information and ping these partitions. The command is also helpful in testing the communication with secure partitions.
For more details please refer to the command documentation [1].
[1]: doc/usage/cmd/armffa.rst
Signed-off-by: Abdellatif El Khlifi abdellatif.elkhlifi@arm.com Reviewed-by: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org Cc: Ilias Apalodimas ilias.apalodimas@linaro.org Cc: Jens Wiklander jens.wiklander@linaro.org Cc: Heinrich Schuchardt xypron.glpk@gmx.de
---
Changelog: ===============
v12:
* add subcommands argument checks * usage documentation: update command return codes * remove calloc when querying SPs * address nits
v11:
* use U_BOOT_CMD_WITH_SUBCMDS * address nits
v10:
* use the FF-A driver Uclass operations * use uclass_first_device() * address nits
v9:
* remove manual FF-A discovery and use DM * use DM class APIs to probe and interact with the FF-A bus * add doc/usage/cmd/armffa.rst
v8:
* update partition_info_get() second argument to be an SP count * pass NULL device pointer to the FF-A bus discovery and operations
v7:
* adapt do_ffa_dev_list() following the recent update on uclass_first_device/uclass_next_device functions (they return void now) * set armffa command to use 64-bit direct messaging
v4:
* remove pattern data in do_ffa_msg_send_direct_req
v3:
* use the new driver interfaces (partition_info_get, sync_send_receive) in armffa command
v2:
* replace use of ffa_helper_init_device function by ffa_helper_bus_discover
v1:
* introduce armffa command
MAINTAINERS | 2 + cmd/Kconfig | 10 ++ cmd/Makefile | 1 + cmd/armffa.c | 196 +++++++++++++++++++++++++++++++ doc/arch/arm64.ffa.rst | 7 ++ doc/usage/cmd/armffa.rst | 93 +++++++++++++++ doc/usage/index.rst | 1 + drivers/firmware/arm-ffa/Kconfig | 1 + 8 files changed, 311 insertions(+) create mode 100644 cmd/armffa.c create mode 100644 doc/usage/cmd/armffa.rst
diff --git a/MAINTAINERS b/MAINTAINERS index 43603522fd..0d960731cf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -269,7 +269,9 @@ F: configs/cortina_presidio-asic-pnand_defconfig ARM FF-A M: Abdellatif El Khlifi abdellatif.elkhlifi@arm.com S: Maintained +F: cmd/armffa.c F: doc/arch/arm64.ffa.rst +F: doc/usage/cmd/armffa.rst F: drivers/firmware/arm-ffa/ F: include/arm_ffa.h F: include/sandbox_arm_ffa.h diff --git a/cmd/Kconfig b/cmd/Kconfig index 365371fb51..86af7bcc9e 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -934,6 +934,16 @@ endmenu
menu "Device access commands"
+config CMD_ARMFFA + bool "Arm FF-A test command" + depends on ARM_FFA_TRANSPORT + help + Provides a test command for the FF-A support + supported options: + - Listing the partition(s) info + - Sending a data pattern to the specified partition + - Displaying the arm_ffa device info + config CMD_ARMFLASH #depends on FLASH_CFI_DRIVER bool "armflash" diff --git a/cmd/Makefile b/cmd/Makefile index 6c37521b4e..7d20a85a46 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -12,6 +12,7 @@ obj-y += panic.o obj-y += version.o
# command +obj-$(CONFIG_CMD_ARMFFA) += armffa.o obj-$(CONFIG_CMD_2048) += 2048.o obj-$(CONFIG_CMD_ACPI) += acpi.o obj-$(CONFIG_CMD_ADDRMAP) += addrmap.o diff --git a/cmd/armffa.c b/cmd/armffa.c new file mode 100644 index 0000000000..fa268e9cb9 --- /dev/null +++ b/cmd/armffa.c @@ -0,0 +1,196 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2022-2023 Arm Limited and/or its affiliates open-source-office@arm.com + * + * Authors: + * Abdellatif El Khlifi abdellatif.elkhlifi@arm.com + */ +#include <common.h> +#include <arm_ffa.h> +#include <command.h> +#include <dm.h> +#include <mapmem.h> +#include <stdlib.h> +#include <asm/io.h> + +/** + * ffa_get_dev() - Return the FF-A device + * @devp: pointer to the FF-A device + * + * Search for the FF-A device. + * + * Return: + * 0 on success. Otherwise, failure + */ +int ffa_get_dev(struct udevice **devp) +{ + int ret; + + ret = uclass_first_device_err(UCLASS_FFA, devp); + if (ret) { + log_err("Cannot find FF-A bus device\n"); + return ret; + } + + return 0; +} + +/** + * do_ffa_getpart() - implementation of the getpart subcommand + * @cmdtp: Command Table + * @flag: flags + * @argc: number of arguments + * @argv: arguments + * + * Query the secure partition information which the UUID is provided + * as an argument. The function uses the arm_ffa driver + * partition_info_get operation which implements FFA_PARTITION_INFO_GET + * ABI to retrieve the data. The input UUID string is expected to be in big + * endian format. + * + * Return: + * + * CMD_RET_SUCCESS: on success, otherwise failure + */ +static int do_ffa_getpart(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + u32 count = 0; + int ret; + struct ffa_partition_desc *descs; + u32 i; + struct udevice *dev; + + if (argc != 2) { + log_err("Missing argument\n"); + return CMD_RET_USAGE; + } + + ret = ffa_get_dev(&dev); + if (ret) + return CMD_RET_FAILURE; + + /* Ask the driver to fill the buffer with the SPs info */ + + ret = ffa_partition_info_get(dev, argv[1], &count, &descs); + if (ret) { + log_err("Failure in querying partition(s) info (error code: %d)\n", ret); + return CMD_RET_FAILURE; + } + + /* SPs found , show the partition information */ + for (i = 0; i < count ; i++) { + log_info("Partition: id = %x , exec_ctxt %x , properties %x\n", + descs[i].info.id, + descs[i].info.exec_ctxt, + descs[i].info.properties); + } + + return CMD_RET_SUCCESS; +} + +/** + * do_ffa_ping() - implementation of the ping subcommand + * @cmdtp: Command Table + * @flag: flags + * @argc: number of arguments + * @argv: arguments + * + * Send data to the secure partition which the ID is provided + * as an argument. Use the arm_ffa driver sync_send_receive operation + * which implements FFA_MSG_SEND_DIRECT_{REQ,RESP} ABIs to send/receive data. + * + * Return: + * + * CMD_RET_SUCCESS: on success, otherwise failure + */ +int do_ffa_ping(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + struct ffa_send_direct_data msg = { + .data0 = 0xaaaaaaaa, + .data1 = 0xbbbbbbbb, + .data2 = 0xcccccccc, + .data3 = 0xdddddddd, + .data4 = 0xeeeeeeee, + }; + u16 part_id; + int ret; + struct udevice *dev; + + if (argc != 2) { + log_err("Missing argument\n"); + return CMD_RET_USAGE; + } + + errno = 0; + part_id = strtoul(argv[1], NULL, 16); + + if (errno) { + log_err("Invalid partition ID\n"); + return CMD_RET_USAGE; + } + + ret = ffa_get_dev(&dev); + if (ret) + return CMD_RET_FAILURE; + + ret = ffa_sync_send_receive(dev, part_id, &msg, 1); + if (!ret) { + u8 cnt; + + log_info("SP response:\n[LSB]\n"); + for (cnt = 0; + cnt < sizeof(struct ffa_send_direct_data) / sizeof(u64); + cnt++) + log_info("%llx\n", ((u64 *)&msg)[cnt]); + return CMD_RET_SUCCESS; + } + + log_err("Sending direct request error (%d)\n", ret); + return CMD_RET_FAILURE; +} + +/** + *do_ffa_devlist() - implementation of the devlist subcommand + * @cmdtp: [in] Command Table + * @flag: flags + * @argc: number of arguments + * @argv: arguments + * + * Query the device belonging to the UCLASS_FFA + * class. + * + * Return: + * + * CMD_RET_SUCCESS: on success, otherwise failure + */ +int do_ffa_devlist(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + struct udevice *dev; + int ret; + + ret = ffa_get_dev(&dev); + if (ret) + return CMD_RET_FAILURE; + + log_info("device name %s, dev %p, driver name %s, ops %p\n", + dev->name, + (void *)map_to_sysmem(dev), + dev->driver->name, + (void *)map_to_sysmem(dev->driver->ops)); + + return CMD_RET_SUCCESS; +} + +static char armffa_help_text[] = + "getpart <partition UUID>\n" + " - lists the partition(s) info\n" + "ping <partition ID>\n" + " - sends a data pattern to the specified partition\n" + "devlist\n" + " - displays information about the FF-A device/driver\n"; + +U_BOOT_CMD_WITH_SUBCMDS(armffa, "Arm FF-A test command", armffa_help_text, + U_BOOT_SUBCMD_MKENT(getpart, 2, 1, do_ffa_getpart), + U_BOOT_SUBCMD_MKENT(ping, 2, 1, do_ffa_ping), + U_BOOT_SUBCMD_MKENT(devlist, 1, 1, do_ffa_devlist)); diff --git a/doc/arch/arm64.ffa.rst b/doc/arch/arm64.ffa.rst index 4f817f053c..aefd527447 100644 --- a/doc/arch/arm64.ffa.rst +++ b/doc/arch/arm64.ffa.rst @@ -205,6 +205,13 @@ The following features are provided:
- FF-A bus can be compiled and used without EFI
+The armffa command +----------------------------------- + +armffa is a command showcasing how to use the FF-A bus and how to invoke the driver operations. + +Please refer the command documentation at :doc:`../usage/cmd/armffa` + Example of boot logs with FF-A enabled --------------------------------------
diff --git a/doc/usage/cmd/armffa.rst b/doc/usage/cmd/armffa.rst new file mode 100644 index 0000000000..3d422686c1 --- /dev/null +++ b/doc/usage/cmd/armffa.rst @@ -0,0 +1,93 @@ +.. SPDX-License-Identifier: GPL-2.0+: + +armffa command +============== + +Synopsis +-------- + +:: + + armffa [sub-command] [arguments] + + sub-commands: + + getpart [partition UUID] + + lists the partition(s) info + + ping [partition ID] + + sends a data pattern to the specified partition + + devlist + + displays information about the FF-A device/driver + +Description +----------- + +armffa is a command showcasing how to use the FF-A bus and how to invoke its operations. + +This provides a guidance to the client developers on how to call the FF-A bus interfaces. + +The command also allows to gather secure partitions information and ping these partitions. + +The command is also helpful in testing the communication with secure partitions. + +Example +------- + +The following examples are run on Corstone-1000 platform. + +* ping + +:: + + corstone1000# armffa ping 0x8003 + SP response: + [LSB] + fffffffe + 0 + 0 + 0 + 0 + +* ping (failure case) + +:: + + corstone1000# armffa ping 0 + Sending direct request error (-22) + +* getpart + +:: + + corstone1000# armffa getpart 33d532ed-e699-0942-c09c-a798d9cd722d + Partition: id = 8003 , exec_ctxt 1 , properties 3 + +* getpart (failure case) + +:: + + corstone1000# armffa getpart 33d532ed-e699-0942-c09c-a798d9cd7221 + INVALID_PARAMETERS: Unrecognized UUID + Failure in querying partitions count (error code: -22) + +* devlist + +:: + + corstone1000# armffa devlist + device name arm_ffa, dev 00000000fdf41c30, driver name arm_ffa, ops 00000000fffc0e98 + +Configuration +------------- + +The command is available if CONFIG_CMD_ARMFFA=y and CONFIG_ARM_FFA_TRANSPORT=y. + +Return value +------------ + +The return value $? is 0 (true) on success, 1 (false) on failure. diff --git a/doc/usage/index.rst b/doc/usage/index.rst index 84ef8a9a42..cfd438d88c 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -22,6 +22,7 @@ Shell commands
cmd/acpi cmd/addrmap + cmd/armffa cmd/askenv cmd/base cmd/bdinfo diff --git a/drivers/firmware/arm-ffa/Kconfig b/drivers/firmware/arm-ffa/Kconfig index 9200c8028b..a7d5392859 100644 --- a/drivers/firmware/arm-ffa/Kconfig +++ b/drivers/firmware/arm-ffa/Kconfig @@ -5,6 +5,7 @@ config ARM_FFA_TRANSPORT depends on DM && ARM64 select ARM_SMCCC select ARM_SMCCC_FEATURES + imply CMD_ARMFFA select LIB_UUID select DEVRES help