board: tq: common: add sysinfo setup helper

Add a setup helper based on the tq_eeprom sysinfo driver
and set up the U-Boot environment.

Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Feilke <alexander.feilke@ew.tq-group.com>

board/tq/common/Kconfig

@@ -14,3 +14,8 @@ config TQ_COMMON_SDMMC
 
 config TQ_COMMON_SOM
 	bool
+
+config TQ_COMMON_SYSINFO
+	bool
+	select SYSINFO
+	imply SYSINFO_TQ_EEPROM

board/tq/common/Makefile

@@ -8,3 +8,4 @@
 obj-$(CONFIG_TQ_COMMON_BB) += tq_bb.o
 obj-$(CONFIG_TQ_COMMON_SOM) += tq_som.o
 obj-$(CONFIG_TQ_COMMON_SDMMC) += tq_sdmmc.o
+obj-$(CONFIG_$(PHASE_)TQ_COMMON_SYSINFO) += tq_sysinfo.o

board/tq/common/tq_sysinfo.c

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Common sysinfo helpers for TQ-Systems SOMs
+ *
+ * Copyright (c) 2020-2026 TQ-Systems GmbH <u-boot@ew.tq-group.com>
+ * D-82229 Seefeld, Germany.
+ * Author: Nora Schiffer
+ */
+
+#include <env.h>
+#include <log.h>
+#include <sysinfo/tq_eeprom.h>
+
+#include "tq_sysinfo.h"
+
+#define MAX_NAME_LENGTH	80
+
+int tq_common_sysinfo_setup(void)
+{
+	struct udevice *sysinfo;
+	char buf[MAX_NAME_LENGTH];
+	int ret;
+
+	ret = sysinfo_get_and_detect(&sysinfo);
+	if (ret) {
+		log_debug("Failed to get sysinfo data: %d\n", ret);
+		return ret;
+	}
+
+	if (!sysinfo_get_str(sysinfo, SYSID_TQ_MODEL, sizeof(buf), buf))
+		env_set_runtime("boardtype", buf);
+
+	if (!sysinfo_get_str(sysinfo, SYSID_TQ_SERIAL, sizeof(buf), buf))
+		env_set_runtime("serial#", buf);
+
+	return 0;
+}

board/tq/common/tq_sysinfo.h

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Common sysinfo helpers for TQ-Systems SOMs
+ *
+ * Copyright (c) 2025-2026 TQ-Systems GmbH <u-boot@ew.tq-group.com>
+ * D-82229 Seefeld, Germany.
+ * Author: Nora Schiffer
+ */
+
+#ifndef __TQ_SYSINFO_H
+#define __TQ_SYSINFO_H
+
+int tq_common_sysinfo_setup(void);
+
+#endif /* __TQ_SYSINFO_H */