From: Ahmad Fatoum <a.fatoum@pengutronix.de>
Date: Thu, 3 Mar 2022 08:29:03 +0100
Subject: [PATCH] commands: add TLV debugging command

The TLV command does the equivalent of having a "barebox,tlv"
compatible node point at the file. It's meant as a debugging aid.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Upstream-Status: Submitted [https://lore.kernel.org/all/20250411074045.2019372-1-a.fatoum@pengutronix.de/]
---
 commands/Kconfig  | 12 ++++++++++++
 commands/Makefile |  1 +
 commands/tlv.c    | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+)
 create mode 100644 commands/tlv.c

diff --git a/commands/Kconfig b/commands/Kconfig
index 4a0486861186..cc3c95def257 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -2466,6 +2466,18 @@ config CMD_STATE
 	depends on STATE
 	prompt "state"
 
+config CMD_TLV
+	tristate
+	depends on TLV
+	prompt "tlv"
+	help
+	  tlv - handle barebox TLV
+
+	  Usage: tlv [-f] FILE
+
+	  The TLV command does the equivalent of having a "barebox,tlv"
+	  compatible node point at the file. It's meant as a debugging aid.
+
 config CMD_DHRYSTONE
 	bool
 	prompt "dhrystone"
diff --git a/commands/Makefile b/commands/Makefile
index ff5d713ca72c..e20257ff14a0 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -138,6 +138,7 @@ obj-$(CONFIG_CMD_CMP)		+= cmp.o
 obj-$(CONFIG_CMD_NV)		+= nv.o
 obj-$(CONFIG_CMD_DEFAULTENV)	+= defaultenv.o
 obj-$(CONFIG_CMD_STATE)		+= state.o
+obj-$(CONFIG_CMD_TLV)		+= tlv.o
 obj-$(CONFIG_CMD_DHCP)		+= dhcp.o
 obj-$(CONFIG_CMD_BOOTCHOOSER)	+= bootchooser.o
 obj-$(CONFIG_CMD_DHRYSTONE)	+= dhrystone.o
diff --git a/commands/tlv.c b/commands/tlv.c
new file mode 100644
index 000000000000..53fbc2a29186
--- /dev/null
+++ b/commands/tlv.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// SPDX-FileCopyrightText: © 2022 Ahmad Fatoum, Pengutronix
+
+#include <common.h>
+#include <of.h>
+#include <command.h>
+#include <getopt.h>
+#include <tlv/tlv.h>
+
+static int do_tlv(int argc, char *argv[])
+{
+	const char *filename;
+	bool fixup = false;
+	struct tlv_device *tlvdev;
+	int opt;
+
+	while ((opt = getopt(argc, argv, "f")) > 0) {
+		switch (opt) {
+		case 'f':
+			fixup = true;
+			break;
+		default:
+			return COMMAND_ERROR_USAGE;
+		}
+	}
+
+	filename = argv[optind];
+	if (!filename)
+		return COMMAND_ERROR_USAGE;
+
+	tlvdev = tlv_register_device_by_path(argv[optind], NULL);
+	if (IS_ERR(tlvdev))
+		return PTR_ERR(tlvdev);
+
+	if (fixup)
+		return tlv_of_register_fixup(tlvdev);
+
+	of_print_nodes(tlv_of_node(tlvdev), 0, ~0);
+
+	tlv_free_device(tlvdev);
+	return 0;
+}
+
+BAREBOX_CMD_HELP_START(tlv)
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT ("-f",  "Register device tree fixup for TLV")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(tlv)
+	.cmd		= do_tlv,
+	BAREBOX_CMD_DESC("handle barebox TLV")
+	BAREBOX_CMD_OPTS("[-f] FILE")
+	BAREBOX_CMD_GROUP(CMD_GRP_MISC)
+	BAREBOX_CMD_HELP(cmd_tlv_help)
+BAREBOX_CMD_END