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.s...@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.s...@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 */
--
2.25.1
