This patch introduces commands to use rpmsg framework
rpmsg init <core id> - Initialize rpmsg framework for remote core
rpmsg debug_data <core id> <"tx" / "rx"> - debug tx or rx virtqueues. This command simply uses virtqueue_dump_data and prints virtqueue for rpmsg device mapped to <core id>
Signed-off-by: Tanmay Shah tanmay.shah@amd.com --- MAINTAINERS | 1 + cmd/Kconfig | 6 +++++ cmd/Makefile | 1 + cmd/rpmsg.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++ include/rpmsg.h | 5 ++++ 5 files changed, 74 insertions(+) create mode 100644 cmd/rpmsg.c
diff --git a/MAINTAINERS b/MAINTAINERS index 876a7fdbdf..8e40da38e7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1368,6 +1368,7 @@ F: doc/README.rockusb RPMSG M: Tanmay Shah tanmay.shah@amd.com S: Maintained +F: cmd/rpmsg.c F: drivers/rpmsg/* F: include/rpmsg.h F: test/dm/rpmsg.c diff --git a/cmd/Kconfig b/cmd/Kconfig index 2d6e5f993f..355644a3fa 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1450,6 +1450,12 @@ config CMD_REMOTEPROC help Support for Remote Processor control
+config CMD_RPMSG + bool "rpmsg" + help + Support for RPMsg protocol over virtio for data transfer between + U-Boot and remote processor firmware + config CMD_SATA bool "sata - Access SATA subsystem" select SATA diff --git a/cmd/Makefile b/cmd/Makefile index 9f8c0b058b..23838698ea 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -149,6 +149,7 @@ obj-$(CONFIG_CMD_REGINFO) += reginfo.o obj-$(CONFIG_CMD_REISER) += reiser.o obj-$(CONFIG_CMD_REMOTEPROC) += remoteproc.o obj-$(CONFIG_CMD_RNG) += rng.o +obj-$(CONFIG_CMD_RPMSG) += rpmsg.o obj-$(CONFIG_CMD_KASLRSEED) += kaslrseed.o obj-$(CONFIG_CMD_ROCKUSB) += rockusb.o obj-$(CONFIG_CMD_RTC) += rtc.o diff --git a/cmd/rpmsg.c b/cmd/rpmsg.c new file mode 100644 index 0000000000..da8aa05c9d --- /dev/null +++ b/cmd/rpmsg.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023, Advanced Micro Devices, Inc. + */ +#include <common.h> +#include <command.h> +#include <dm.h> +#include <errno.h> +#include <malloc.h> +#include <rpmsg.h> + +static int do_rpmsg_init(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + /* Expect args to <core id> <data string> */ + + int core_id, ret = CMD_RET_USAGE; + + if (argc != 2) + return ret; + + core_id = strtoul(argv[1], NULL, 16); + rpmsg_init(core_id); + + return 0; +} + +static int do_rpmsg_debug_data(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + /* + * Expect args to <core id> <data string> + */ + int core_id, vq_id; + + if (argc != 3) + return CMD_RET_USAGE; + + core_id = strtoul(argv[1], NULL, 10); + if (!strcmp(argv[2], "rx")) + vq_id = 0; + else if (!strcmp(argv[2], "tx")) + vq_id = 1; + else + return CMD_RET_USAGE; + + rpmsg_debug_data(core_id, vq_id); + + return 0; +} + +static char rpmsg_cmd_help[] = + "Send/Recv data over RPMsg channel from U-Boot to remote processor.\n" + "commands:\n" + "rpmsg init <rproc core id>\n" + "rpmsg debug_data <rproc core id> <vq name (tx or rx)>\n"; + +U_BOOT_CMD_WITH_SUBCMDS(rpmsg, "rpmsg subsystem", rpmsg_cmd_help, + U_BOOT_SUBCMD_MKENT(init, 2, 0, do_rpmsg_init), + U_BOOT_SUBCMD_MKENT(debug_data, 3, 1, + do_rpmsg_debug_data)); diff --git a/include/rpmsg.h b/include/rpmsg.h index bed61240ca..18e8ee1ee2 100644 --- a/include/rpmsg.h +++ b/include/rpmsg.h @@ -118,6 +118,7 @@ typedef int (*rpmsg_rx_cb_t)(void *buf, int msg_len, u32 msgs_received); int rpmsg_init(int core_id); int rpmsg_send(int core_id, void *data, int len); int rpmsg_recv(int core_id, rpmsg_rx_cb_t cb); +void rpmsg_debug_data(int core_id, int vq_id);
#else int rpmsg_init(int core_id) @@ -135,6 +136,10 @@ int rpmsg_recv(int core_id, rpmsg_rx_cb_t cb) return -ENODEV; }
+void rpmsg_debug_data(int core_id, int vq_id) +{ +} + #endif /* IS_ENABLED(CONFIG_RPMSG) */
#endif /* _RPMSG_H */