| Message ID | 20230726083808.140780-11-takahiro.akashi@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | firmware: scmi: add SCMI base protocol support | expand |
On Wed, 26 Jul 2023 at 02:40, AKASHI Takahiro <takahiro.akashi@linaro.org> wrote: > > This command, "scmi", may provide a command line interface to various SCMI > protocols. It supports at least initially SCMI base protocol and is > intended mainly for debug purpose. > > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> > --- > v2 > * remove sub command category, 'scmi base', for simplicity > --- > cmd/Kconfig | 9 ++ > cmd/Makefile | 1 + > cmd/scmi.c | 334 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 344 insertions(+) > create mode 100644 cmd/scmi.c > Reviewed-by: Simon Glass <sjg@chromium.org>
> From: AKASHI Takahiro <takahiro.akashi@linaro.org> > Sent: Wednesday, July 26, 2023 10:38 > > This command, "scmi", may provide a command line interface to various SCMI > protocols. It supports at least initially SCMI base protocol and is > intended mainly for debug purpose. > > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> > --- > v2 > * remove sub command category, 'scmi base', for simplicity Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com> > --- > cmd/Kconfig | 9 ++ > cmd/Makefile | 1 + > cmd/scmi.c | 334 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 344 insertions(+) > create mode 100644 cmd/scmi.c > > diff --git a/cmd/Kconfig b/cmd/Kconfig > index 02e54f1e50fe..15d1d7b9863f 100644 > --- a/cmd/Kconfig > +++ b/cmd/Kconfig > @@ -2504,6 +2504,15 @@ config CMD_CROS_EC > a number of sub-commands for performing EC tasks such as > updating its flash, accessing a small saved context area > and talking to the I2C bus behind the EC (if there is one). > + > +config CMD_SCMI > + bool "Enable scmi command" > + depends on SCMI_FIRMWARE > + default n > + help > + This command provides user interfaces to several SCMI (System > + Control and Management Interface) protocols available on Arm > + platforms to manage system resources. > endmenu > > menu "Filesystem commands" > diff --git a/cmd/Makefile b/cmd/Makefile > index 6c37521b4e2b..826e0b74b587 100644 > --- a/cmd/Makefile > +++ b/cmd/Makefile > @@ -156,6 +156,7 @@ obj-$(CONFIG_CMD_SATA) += sata.o > obj-$(CONFIG_CMD_NVME) += nvme.o > obj-$(CONFIG_SANDBOX) += sb.o > obj-$(CONFIG_CMD_SF) += sf.o > +obj-$(CONFIG_CMD_SCMI) += scmi.o > obj-$(CONFIG_CMD_SCSI) += scsi.o disk.o > obj-$(CONFIG_CMD_SHA1SUM) += sha1sum.o > obj-$(CONFIG_CMD_SEAMA) += seama.o > diff --git a/cmd/scmi.c b/cmd/scmi.c > new file mode 100644 > index 000000000000..5ecd9051b48d > --- /dev/null > +++ b/cmd/scmi.c > @@ -0,0 +1,334 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * SCMI (System Control and Management Interface) utility command > + * > + * Copyright (c) 2023 Linaro Limited > + * Author: AKASHI Takahiro > + */ > + > +#include <common.h> > +#include <command.h> > +#include <exports.h> > +#include <scmi_agent.h> > +#include <scmi_agent-uclass.h> > +#include <asm/types.h> > +#include <dm/device.h> > +#include <dm/uclass.h> /* uclass_get_device */ > +#include <linux/bitfield.h> > +#include <linux/bitops.h> > + > +static struct udevice *agent; > +static struct udevice *base_proto; > + > +struct { > + enum scmi_std_protocol id; > + const char *name; > +} protocol_name[] = { > + {SCMI_PROTOCOL_ID_BASE, "Base"}, > + {SCMI_PROTOCOL_ID_POWER_DOMAIN, "Power domain management"}, > + {SCMI_PROTOCOL_ID_SYSTEM, "System power management"}, > + {SCMI_PROTOCOL_ID_PERF, "Performance domain management"}, > + {SCMI_PROTOCOL_ID_CLOCK, "Clock management"}, > + {SCMI_PROTOCOL_ID_SENSOR, "Sensor management"}, > + {SCMI_PROTOCOL_ID_RESET_DOMAIN, "Reset domain management"}, > + {SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN, "Voltage domain management"}, > +}; > + > +/** > + * get_proto_name() - get the name of SCMI protocol > + * > + * @id: SCMI Protocol ID > + * > + * Get the printable name of the protocol, @id > + * > + * Return: Name string on success, NULL on failure > + */ > +static const char *get_proto_name(enum scmi_std_protocol id) > +{ > + int i; > + > + for (i = 0; i < ARRAY_SIZE(protocol_name); i++) > + if (id == protocol_name[i].id) > + return protocol_name[i].name; > + > + return NULL; > +} > + > +/** > + * do_scmi_info() - get the information of SCMI services > + * > + * @cmdtp: Command table > + * @flag: Command flag > + * @argc: Number of arguments > + * @argv: Argument array > + * > + * Get the information of SCMI services using various interfaces > + * provided by the Base protocol. > + * > + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure > + */ > +static int do_scmi_info(struct cmd_tbl *cmdtp, int flag, int argc, > + char * const argv[]) > +{ > + u32 agent_id, num_protocols; > + u8 agent_name[SCMI_BASE_NAME_LENGTH_MAX], *protocols; > + int i, ret; > + > + if (argc != 1) > + return CMD_RET_USAGE; > + > + printf("SCMI device: %s\n", agent->name); > + printf(" protocol version: 0x%x\n", scmi_version(agent)); > + printf(" # of agents: %d\n", scmi_num_agents(agent)); > + for (i = 0; i < scmi_num_agents(agent); i++) { > + ret = scmi_base_discover_agent(base_proto, i, &agent_id, > + agent_name); > + if (ret) { > + if (ret != -EOPNOTSUPP) > + printf("base_discover_agent() failed for id: %d (%d)\n", > + i, ret); > + break; > + } > + printf(" %c%2d: %s\n", i == scmi_agent_id(agent) ? '>' : ' ', > + i, agent_name); > + } > + printf(" # of protocols: %d\n", scmi_num_protocols(agent)); > + num_protocols = scmi_num_protocols(agent); > + protocols = scmi_protocols(agent); > + if (protocols) > + for (i = 0; i < num_protocols; i++) > + printf(" %s\n", get_proto_name(protocols[i])); > + printf(" vendor: %s\n", scmi_vendor(agent)); > + printf(" sub vendor: %s\n", scmi_sub_vendor(agent)); > + printf(" impl version: 0x%x\n", scmi_impl_version(agent)); > + > + return CMD_RET_SUCCESS; > +} > + > +/** > + * do_scmi_set_dev() - set access permission to device > + * > + * @cmdtp: Command table > + * @flag: Command flag > + * @argc: Number of arguments > + * @argv: Argument array > + * > + * Set access permission to device with SCMI_BASE_SET_DEVICE_PERMISSIONS > + * > + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure > + */ > +static int do_scmi_set_dev(struct cmd_tbl *cmdtp, int flag, int argc, > + char * const argv[]) > +{ > + u32 agent_id, device_id, flags, attributes; > + char *end; > + int ret; > + > + if (argc != 4) > + return CMD_RET_USAGE; > + > + agent_id = simple_strtoul(argv[1], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + device_id = simple_strtoul(argv[2], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + flags = simple_strtoul(argv[3], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + ret = scmi_base_protocol_message_attrs(base_proto, > + SCMI_BASE_SET_DEVICE_PERMISSIONS, > + &attributes); > + if (ret) { > + printf("This operation is not supported\n"); > + return CMD_RET_FAILURE; > + } > + > + ret = scmi_base_set_device_permissions(base_proto, agent_id, > + device_id, flags); > + if (ret) { > + printf("%s access to device:%u failed (%d)\n", > + flags ? "Allowing" : "Denying", device_id, ret); > + return CMD_RET_FAILURE; > + } > + > + return CMD_RET_SUCCESS; > +} > + > +/** > + * do_scmi_set_proto() - set protocol permission to device > + * > + * @cmdtp: Command table > + * @flag: Command flag > + * @argc: Number of arguments > + * @argv: Argument array > + * > + * Set protocol permission to device with SCMI_BASE_SET_PROTOCOL_PERMISSIONS > + * > + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure > + */ > +static int do_scmi_set_proto(struct cmd_tbl *cmdtp, int flag, int argc, > + char * const argv[]) > +{ > + u32 agent_id, device_id, protocol_id, flags, attributes; > + char *end; > + int ret; > + > + if (argc != 5) > + return CMD_RET_USAGE; > + > + agent_id = simple_strtoul(argv[1], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + device_id = simple_strtoul(argv[2], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + protocol_id = simple_strtoul(argv[3], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + flags = simple_strtoul(argv[4], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + ret = scmi_base_protocol_message_attrs(base_proto, > + SCMI_BASE_SET_PROTOCOL_PERMISSIONS, > + &attributes); > + if (ret) { > + printf("This operation is not supported\n"); > + return CMD_RET_FAILURE; > + } > + > + ret = scmi_base_set_protocol_permissions(base_proto, agent_id, > + device_id, protocol_id, > + flags); > + if (ret) { > + printf("%s access to protocol:0x%x on device:%u failed (%d)\n", > + flags ? "Allowing" : "Denying", protocol_id, device_id, > + ret); > + return CMD_RET_FAILURE; > + } > + > + return CMD_RET_SUCCESS; > +} > + > +/** > + * do_scmi_reset() - reset platform resource settings > + * > + * @cmdtp: Command table > + * @flag: Command flag > + * @argc: Number of arguments > + * @argv: Argument array > + * > + * Reset platform resource settings with BASE_RESET_AGENT_CONFIGURATION > + * > + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure > + */ > +static int do_scmi_reset(struct cmd_tbl *cmdtp, int flag, int argc, > + char * const argv[]) > +{ > + u32 agent_id, flags, attributes; > + char *end; > + int ret; > + > + if (argc != 3) > + return CMD_RET_USAGE; > + > + agent_id = simple_strtoul(argv[1], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + flags = simple_strtoul(argv[2], &end, 16); > + if (*end != '\0') > + return CMD_RET_USAGE; > + > + ret = scmi_base_protocol_message_attrs(base_proto, > + SCMI_BASE_RESET_AGENT_CONFIGURATION, > + &attributes); > + if (ret) { > + printf("Reset is not supported\n"); > + return CMD_RET_FAILURE; > + } > + > + ret = scmi_base_reset_agent_configuration(base_proto, agent_id, flags); > + if (ret) { > + printf("Reset failed (%d)\n", ret); > + return CMD_RET_FAILURE; > + } > + > + return CMD_RET_SUCCESS; > +} > + > +static struct cmd_tbl cmd_scmi_sub[] = { > + U_BOOT_CMD_MKENT(info, CONFIG_SYS_MAXARGS, 1, > + do_scmi_info, "", ""), > + U_BOOT_CMD_MKENT(perm_dev, CONFIG_SYS_MAXARGS, 1, > + do_scmi_set_dev, "", ""), > + U_BOOT_CMD_MKENT(perm_proto, CONFIG_SYS_MAXARGS, 1, > + do_scmi_set_proto, "", ""), > + U_BOOT_CMD_MKENT(reset, CONFIG_SYS_MAXARGS, 1, > + do_scmi_reset, "", ""), > +}; > + > +/** > + * do_scmi() - SCMI utility > + * > + * @cmdtp: Command table > + * @flag: Command flag > + * @argc: Number of arguments > + * @argv: Argument array > + * > + * Provide user interfaces to SCMI protocols. > + * > + * Return: CMD_RET_SUCCESS on success, > + * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure > + */ > +static int do_scmi(struct cmd_tbl *cmdtp, int flag, > + int argc, char *const argv[]) > +{ > + struct cmd_tbl *cp; > + > + if (argc < 2) > + return CMD_RET_USAGE; > + > + argc--; argv++; > + > + if (!agent) { > + if (uclass_get_device(UCLASS_SCMI_AGENT, 0, &agent)) { > + printf("Cannot find any SCMI agent\n"); > + return CMD_RET_FAILURE; > + } > + } > + > + if (!base_proto) > + base_proto = scmi_get_protocol(agent, SCMI_PROTOCOL_ID_BASE); > + if (!base_proto) { > + printf("SCMI base protocol not found\n"); > + return CMD_RET_FAILURE; > + } > + > + cp = find_cmd_tbl(argv[0], cmd_scmi_sub, ARRAY_SIZE(cmd_scmi_sub)); > + if (!cp) > + return CMD_RET_USAGE; > + > + return cp->cmd(cmdtp, flag, argc, argv); > +} > + > +static char scmi_help_text[] = > + " - SCMI utility\n" > + " info - get the info of SCMI services\n" > + " perm_dev <agent id> <device id> <flags>\n" > + " - set access permission to device\n" > + " perm_proto <agent id> <device id> <protocol id> <flags>\n" > + " - set protocol permission to device\n" > + " reset <agent id> <flags>\n" > + " - reset platform resource settings\n" > + ""; > + > +U_BOOT_CMD(scmi, CONFIG_SYS_MAXARGS, 0, do_scmi, "SCMI utility", > + scmi_help_text); > -- > 2.41.0 >
diff --git a/cmd/Kconfig b/cmd/Kconfig index 02e54f1e50fe..15d1d7b9863f 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -2504,6 +2504,15 @@ config CMD_CROS_EC a number of sub-commands for performing EC tasks such as updating its flash, accessing a small saved context area and talking to the I2C bus behind the EC (if there is one). + +config CMD_SCMI + bool "Enable scmi command" + depends on SCMI_FIRMWARE + default n + help + This command provides user interfaces to several SCMI (System + Control and Management Interface) protocols available on Arm + platforms to manage system resources. endmenu menu "Filesystem commands" diff --git a/cmd/Makefile b/cmd/Makefile index 6c37521b4e2b..826e0b74b587 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -156,6 +156,7 @@ obj-$(CONFIG_CMD_SATA) += sata.o obj-$(CONFIG_CMD_NVME) += nvme.o obj-$(CONFIG_SANDBOX) += sb.o obj-$(CONFIG_CMD_SF) += sf.o +obj-$(CONFIG_CMD_SCMI) += scmi.o obj-$(CONFIG_CMD_SCSI) += scsi.o disk.o obj-$(CONFIG_CMD_SHA1SUM) += sha1sum.o obj-$(CONFIG_CMD_SEAMA) += seama.o diff --git a/cmd/scmi.c b/cmd/scmi.c new file mode 100644 index 000000000000..5ecd9051b48d --- /dev/null +++ b/cmd/scmi.c @@ -0,0 +1,334 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * SCMI (System Control and Management Interface) utility command + * + * Copyright (c) 2023 Linaro Limited + * Author: AKASHI Takahiro + */ + +#include <common.h> +#include <command.h> +#include <exports.h> +#include <scmi_agent.h> +#include <scmi_agent-uclass.h> +#include <asm/types.h> +#include <dm/device.h> +#include <dm/uclass.h> /* uclass_get_device */ +#include <linux/bitfield.h> +#include <linux/bitops.h> + +static struct udevice *agent; +static struct udevice *base_proto; + +struct { + enum scmi_std_protocol id; + const char *name; +} protocol_name[] = { + {SCMI_PROTOCOL_ID_BASE, "Base"}, + {SCMI_PROTOCOL_ID_POWER_DOMAIN, "Power domain management"}, + {SCMI_PROTOCOL_ID_SYSTEM, "System power management"}, + {SCMI_PROTOCOL_ID_PERF, "Performance domain management"}, + {SCMI_PROTOCOL_ID_CLOCK, "Clock management"}, + {SCMI_PROTOCOL_ID_SENSOR, "Sensor management"}, + {SCMI_PROTOCOL_ID_RESET_DOMAIN, "Reset domain management"}, + {SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN, "Voltage domain management"}, +}; + +/** + * get_proto_name() - get the name of SCMI protocol + * + * @id: SCMI Protocol ID + * + * Get the printable name of the protocol, @id + * + * Return: Name string on success, NULL on failure + */ +static const char *get_proto_name(enum scmi_std_protocol id) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(protocol_name); i++) + if (id == protocol_name[i].id) + return protocol_name[i].name; + + return NULL; +} + +/** + * do_scmi_info() - get the information of SCMI services + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * + * Get the information of SCMI services using various interfaces + * provided by the Base protocol. + * + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure + */ +static int do_scmi_info(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 agent_id, num_protocols; + u8 agent_name[SCMI_BASE_NAME_LENGTH_MAX], *protocols; + int i, ret; + + if (argc != 1) + return CMD_RET_USAGE; + + printf("SCMI device: %s\n", agent->name); + printf(" protocol version: 0x%x\n", scmi_version(agent)); + printf(" # of agents: %d\n", scmi_num_agents(agent)); + for (i = 0; i < scmi_num_agents(agent); i++) { + ret = scmi_base_discover_agent(base_proto, i, &agent_id, + agent_name); + if (ret) { + if (ret != -EOPNOTSUPP) + printf("base_discover_agent() failed for id: %d (%d)\n", + i, ret); + break; + } + printf(" %c%2d: %s\n", i == scmi_agent_id(agent) ? '>' : ' ', + i, agent_name); + } + printf(" # of protocols: %d\n", scmi_num_protocols(agent)); + num_protocols = scmi_num_protocols(agent); + protocols = scmi_protocols(agent); + if (protocols) + for (i = 0; i < num_protocols; i++) + printf(" %s\n", get_proto_name(protocols[i])); + printf(" vendor: %s\n", scmi_vendor(agent)); + printf(" sub vendor: %s\n", scmi_sub_vendor(agent)); + printf(" impl version: 0x%x\n", scmi_impl_version(agent)); + + return CMD_RET_SUCCESS; +} + +/** + * do_scmi_set_dev() - set access permission to device + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * + * Set access permission to device with SCMI_BASE_SET_DEVICE_PERMISSIONS + * + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure + */ +static int do_scmi_set_dev(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 agent_id, device_id, flags, attributes; + char *end; + int ret; + + if (argc != 4) + return CMD_RET_USAGE; + + agent_id = simple_strtoul(argv[1], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + device_id = simple_strtoul(argv[2], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + flags = simple_strtoul(argv[3], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + ret = scmi_base_protocol_message_attrs(base_proto, + SCMI_BASE_SET_DEVICE_PERMISSIONS, + &attributes); + if (ret) { + printf("This operation is not supported\n"); + return CMD_RET_FAILURE; + } + + ret = scmi_base_set_device_permissions(base_proto, agent_id, + device_id, flags); + if (ret) { + printf("%s access to device:%u failed (%d)\n", + flags ? "Allowing" : "Denying", device_id, ret); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; +} + +/** + * do_scmi_set_proto() - set protocol permission to device + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * + * Set protocol permission to device with SCMI_BASE_SET_PROTOCOL_PERMISSIONS + * + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure + */ +static int do_scmi_set_proto(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 agent_id, device_id, protocol_id, flags, attributes; + char *end; + int ret; + + if (argc != 5) + return CMD_RET_USAGE; + + agent_id = simple_strtoul(argv[1], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + device_id = simple_strtoul(argv[2], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + protocol_id = simple_strtoul(argv[3], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + flags = simple_strtoul(argv[4], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + ret = scmi_base_protocol_message_attrs(base_proto, + SCMI_BASE_SET_PROTOCOL_PERMISSIONS, + &attributes); + if (ret) { + printf("This operation is not supported\n"); + return CMD_RET_FAILURE; + } + + ret = scmi_base_set_protocol_permissions(base_proto, agent_id, + device_id, protocol_id, + flags); + if (ret) { + printf("%s access to protocol:0x%x on device:%u failed (%d)\n", + flags ? "Allowing" : "Denying", protocol_id, device_id, + ret); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; +} + +/** + * do_scmi_reset() - reset platform resource settings + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * + * Reset platform resource settings with BASE_RESET_AGENT_CONFIGURATION + * + * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure + */ +static int do_scmi_reset(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 agent_id, flags, attributes; + char *end; + int ret; + + if (argc != 3) + return CMD_RET_USAGE; + + agent_id = simple_strtoul(argv[1], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + flags = simple_strtoul(argv[2], &end, 16); + if (*end != '\0') + return CMD_RET_USAGE; + + ret = scmi_base_protocol_message_attrs(base_proto, + SCMI_BASE_RESET_AGENT_CONFIGURATION, + &attributes); + if (ret) { + printf("Reset is not supported\n"); + return CMD_RET_FAILURE; + } + + ret = scmi_base_reset_agent_configuration(base_proto, agent_id, flags); + if (ret) { + printf("Reset failed (%d)\n", ret); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; +} + +static struct cmd_tbl cmd_scmi_sub[] = { + U_BOOT_CMD_MKENT(info, CONFIG_SYS_MAXARGS, 1, + do_scmi_info, "", ""), + U_BOOT_CMD_MKENT(perm_dev, CONFIG_SYS_MAXARGS, 1, + do_scmi_set_dev, "", ""), + U_BOOT_CMD_MKENT(perm_proto, CONFIG_SYS_MAXARGS, 1, + do_scmi_set_proto, "", ""), + U_BOOT_CMD_MKENT(reset, CONFIG_SYS_MAXARGS, 1, + do_scmi_reset, "", ""), +}; + +/** + * do_scmi() - SCMI utility + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * + * Provide user interfaces to SCMI protocols. + * + * Return: CMD_RET_SUCCESS on success, + * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure + */ +static int do_scmi(struct cmd_tbl *cmdtp, int flag, + int argc, char *const argv[]) +{ + struct cmd_tbl *cp; + + if (argc < 2) + return CMD_RET_USAGE; + + argc--; argv++; + + if (!agent) { + if (uclass_get_device(UCLASS_SCMI_AGENT, 0, &agent)) { + printf("Cannot find any SCMI agent\n"); + return CMD_RET_FAILURE; + } + } + + if (!base_proto) + base_proto = scmi_get_protocol(agent, SCMI_PROTOCOL_ID_BASE); + if (!base_proto) { + printf("SCMI base protocol not found\n"); + return CMD_RET_FAILURE; + } + + cp = find_cmd_tbl(argv[0], cmd_scmi_sub, ARRAY_SIZE(cmd_scmi_sub)); + if (!cp) + return CMD_RET_USAGE; + + return cp->cmd(cmdtp, flag, argc, argv); +} + +static char scmi_help_text[] = + " - SCMI utility\n" + " info - get the info of SCMI services\n" + " perm_dev <agent id> <device id> <flags>\n" + " - set access permission to device\n" + " perm_proto <agent id> <device id> <protocol id> <flags>\n" + " - set protocol permission to device\n" + " reset <agent id> <flags>\n" + " - reset platform resource settings\n" + ""; + +U_BOOT_CMD(scmi, CONFIG_SYS_MAXARGS, 0, do_scmi, "SCMI utility", + scmi_help_text);
This command, "scmi", may provide a command line interface to various SCMI protocols. It supports at least initially SCMI base protocol and is intended mainly for debug purpose. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> --- v2 * remove sub command category, 'scmi base', for simplicity --- cmd/Kconfig | 9 ++ cmd/Makefile | 1 + cmd/scmi.c | 334 +++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 344 insertions(+) create mode 100644 cmd/scmi.c