[PATCH v4 4/5] sysinfo: Add driver for IOT2050 boards
Baocheng Su
baocheng.su at siemens.com
Tue Feb 18 03:36:13 CET 2025
This brings a sysinfo driver and DT entry for the IOT2050 board series.
It translates the board information passed from SE-Boot to SPL into
values that can be retrieved via the sysinfo API. Will is already used
to fill the SMBIOS table when booting via EFI.
Signed-off-by: Baocheng Su <baocheng.su at siemens.com>
Signed-off-by: Li Hua Qian <huaqian.li at siemens.com>
[Jan: split-off as separate patch, cleanup]
Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
---
Changes in v4:
- Drop the SYSINFO in iot2050_defconfig, this will be auto selected in
the TARGET_IOT2050_A53
Changes in v3:
- remove the sysinfo id mapping prior to SYSID_USER
- keep some iot2050 specific sysinfo ids to explicitly express the
original naming. They are pairing cased with the SYSID_SM_* in the
get_str hook
- convert device-specific format of UUID to SMBios binary format when
probing, with the help of uuid_str_to_bin
- s/strncpy/strlcpy/g
- move the 'case RAM_SIZE' into get_int hook
- add get_data hook for the SMBios UUID. Meanwhile still keep the
'BOARD_UUID' string for the u-boot environment
- hook the get_item_count and get_data_by_index for the MAC addresses
.../dts/k3-am65-iot2050-common-u-boot.dtsi | 18 ++
drivers/sysinfo/Kconfig | 7 +
drivers/sysinfo/Makefile | 1 +
drivers/sysinfo/iot2050.c | 202 ++++++++++++++++++
drivers/sysinfo/iot2050.h | 14 ++
5 files changed, 242 insertions(+)
create mode 100644 drivers/sysinfo/iot2050.c
create mode 100644 drivers/sysinfo/iot2050.h
diff --git a/arch/arm/dts/k3-am65-iot2050-common-u-boot.dtsi b/arch/arm/dts/k3-am65-iot2050-common-u-boot.dtsi
index b6d2c816acc2..55337179f9f3 100644
--- a/arch/arm/dts/k3-am65-iot2050-common-u-boot.dtsi
+++ b/arch/arm/dts/k3-am65-iot2050-common-u-boot.dtsi
@@ -14,6 +14,24 @@
spi0 = &ospi0;
};
+ sysinfo {
+ compatible = "siemens,sysinfo-iot2050";
+ /* TI_SRAM_SCRATCH_BOARD_EEPROM_START */
+ offset = <0x40280000>;
+ bootph-all;
+
+ smbios {
+ system {
+ manufacturer = "SIEMENS AG";
+ product = "SIMATIC IOT2050";
+ };
+
+ baseboard {
+ manufacturer = "SIEMENS AG";
+ };
+ };
+ };
+
leds {
bootph-all;
status-led-red {
diff --git a/drivers/sysinfo/Kconfig b/drivers/sysinfo/Kconfig
index 2030e4babc9f..df83df69ffb3 100644
--- a/drivers/sysinfo/Kconfig
+++ b/drivers/sysinfo/Kconfig
@@ -31,6 +31,13 @@ config SYSINFO_RCAR3
help
Support querying SoC version information for Renesas R-Car Gen3.
+config SYSINFO_IOT2050
+ bool "Enable sysinfo driver for the Siemens IOT2050"
+ depends on TARGET_IOT2050_A53
+ default y if TARGET_IOT2050_A53
+ help
+ Support querying device information for Siemens IOT2050.
+
config SYSINFO_SANDBOX
bool "Enable sysinfo driver for the Sandbox board"
help
diff --git a/drivers/sysinfo/Makefile b/drivers/sysinfo/Makefile
index 680dde77fe88..26ca31509997 100644
--- a/drivers/sysinfo/Makefile
+++ b/drivers/sysinfo/Makefile
@@ -5,6 +5,7 @@
obj-y += sysinfo-uclass.o
obj-$(CONFIG_SYSINFO_GAZERBEAM) += gazerbeam.o
obj-$(CONFIG_SYSINFO_GPIO) += gpio.o
+obj-$(CONFIG_SYSINFO_IOT2050) += iot2050.o
obj-$(CONFIG_SYSINFO_RCAR3) += rcar3.o
obj-$(CONFIG_SYSINFO_SANDBOX) += sandbox.o
obj-$(CONFIG_SYSINFO_SMBIOS) += smbios.o
diff --git a/drivers/sysinfo/iot2050.c b/drivers/sysinfo/iot2050.c
new file mode 100644
index 000000000000..579a9f4711db
--- /dev/null
+++ b/drivers/sysinfo/iot2050.c
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) Siemens AG, 2025
+ */
+
+#include <dm.h>
+#include <sysinfo.h>
+#include <net.h>
+#include <u-boot/uuid.h>
+#include <asm/arch/hardware.h>
+
+#include "iot2050.h"
+
+#define IOT2050_INFO_MAGIC 0x20502050
+
+#define IOT2050_UUID_STR_LEN (32)
+
+struct iot2050_info {
+ u32 magic;
+ u16 size;
+ char name[20 + 1];
+ char serial[16 + 1];
+ char mlfb[18 + 1];
+ char uuid[IOT2050_UUID_STR_LEN + 1];
+ char a5e[18 + 1];
+ u8 mac_addr_cnt;
+ u8 mac_addr[8][ARP_HLEN];
+ char seboot_version[40 + 1];
+ u8 padding[3];
+ u32 ddr_size_mb;
+} __packed;
+
+/**
+ * struct sysinfo_iot2050_priv - sysinfo private data
+ * @info: iot2050 board info
+ */
+struct sysinfo_iot2050_priv {
+ struct iot2050_info *info;
+ u8 uuid_smbios[16];
+};
+
+static int sysinfo_iot2050_detect(struct udevice *dev)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ if (!priv->info || priv->info->magic != IOT2050_INFO_MAGIC)
+ return -EFAULT;
+
+ return 0;
+}
+
+static int sysinfo_iot2050_get_str(struct udevice *dev, int id, size_t size,
+ char *val)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ switch (id) {
+ case BOARD_NAME:
+ case SYSID_SM_BASEBOARD_VERSION:
+ strlcpy(val, priv->info->name, size);
+ break;
+ case SYSID_SM_SYSTEM_SERIAL:
+ strlcpy(val, priv->info->serial, size);
+ break;
+ case BOARD_MLFB:
+ case SYSID_SM_SYSTEM_VERSION:
+ strlcpy(val, priv->info->mlfb, size);
+ break;
+ case BOARD_UUID:
+ strlcpy(val, priv->info->uuid, size);
+ break;
+ case BOARD_A5E:
+ case SYSID_SM_BASEBOARD_PRODUCT:
+ strlcpy(val, priv->info->a5e, size);
+ break;
+ case BOARD_SEBOOT_VER:
+ case SYSID_PRIOR_STAGE_VERSION:
+ strlcpy(val, priv->info->seboot_version, size);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ val[size - 1] = '\0';
+ return 0;
+}
+
+static int sysinfo_iot2050_get_int(struct udevice *dev, int id, int *val)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ switch (id) {
+ case SYSID_BOARD_RAM_SIZE_MB:
+ *val = priv->info->ddr_size_mb;
+ return 0;
+ default:
+ return -EINVAL;
+ };
+}
+
+static int sysinfo_iot2050_get_data(struct udevice *dev, int id, void **data,
+ size_t *size)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ switch (id) {
+ case SYSID_SM_SYSTEM_UUID:
+ *data = priv->uuid_smbios;
+ *size = 16;
+ return 0;
+ default:
+ return -EINVAL;
+ };
+}
+
+static int sysinfo_iot2050_get_item_count(struct udevice *dev, int id)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ switch (id) {
+ case SYSID_BOARD_MAC_ADDR:
+ return priv->info->mac_addr_cnt;
+ default:
+ return -EINVAL;
+ };
+}
+
+static int sysinfo_iot2050_get_data_by_index(struct udevice *dev, int id,
+ int index, void **data,
+ size_t *size)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+
+ switch (id) {
+ case SYSID_BOARD_MAC_ADDR:
+ if (index >= priv->info->mac_addr_cnt)
+ return -EINVAL;
+ *data = priv->info->mac_addr[index];
+ *size = ARP_HLEN;
+ return 0;
+ default:
+ return -EINVAL;
+ };
+}
+
+static const struct sysinfo_ops sysinfo_iot2050_ops = {
+ .detect = sysinfo_iot2050_detect,
+ .get_str = sysinfo_iot2050_get_str,
+ .get_int = sysinfo_iot2050_get_int,
+ .get_data = sysinfo_iot2050_get_data,
+ .get_item_count = sysinfo_iot2050_get_item_count,
+ .get_data_by_index = sysinfo_iot2050_get_data_by_index,
+};
+
+/**
+ * @brief Convert the IOT2050 UUID string to the SMBIOS format
+ *
+ * @param uuid_raw The IOT2050 UUID string parsed from the eeprom
+ * @param uuid_smbios The buffer to hold the SMBIOS formatted UUID
+ */
+static void sysinfo_iot2050_convert_uuid(const char *uuid_iot2050,
+ u8 *uuid_smbios)
+{
+ char uuid_rfc4122_str[IOT2050_UUID_STR_LEN + 4 + 1] = {0};
+ char *tmp = uuid_rfc4122_str;
+
+ for (int i = 0; i < 16; i++) {
+ memcpy(tmp, uuid_iot2050 + i * 2, 2);
+ tmp += 2;
+ if (i == 3 || i == 5 || i == 7 || i == 9)
+ *tmp++ = '-';
+ }
+ uuid_str_to_bin(uuid_rfc4122_str, uuid_smbios, UUID_STR_FORMAT_GUID);
+}
+
+static int sysinfo_iot2050_probe(struct udevice *dev)
+{
+ struct sysinfo_iot2050_priv *priv = dev_get_priv(dev);
+ unsigned long offset;
+
+ offset = dev_read_u32_default(dev, "offset",
+ TI_SRAM_SCRATCH_BOARD_EEPROM_START);
+ priv->info = (struct iot2050_info *)offset;
+
+ sysinfo_iot2050_convert_uuid(priv->info->uuid, priv->uuid_smbios);
+
+ return 0;
+}
+
+static const struct udevice_id sysinfo_iot2050_ids[] = {
+ { .compatible = "siemens,sysinfo-iot2050" },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(sysinfo_iot2050) = {
+ .name = "sysinfo_iot2050",
+ .id = UCLASS_SYSINFO,
+ .of_match = sysinfo_iot2050_ids,
+ .ops = &sysinfo_iot2050_ops,
+ .priv_auto = sizeof(struct sysinfo_iot2050_priv),
+ .probe = sysinfo_iot2050_probe,
+};
diff --git a/drivers/sysinfo/iot2050.h b/drivers/sysinfo/iot2050.h
new file mode 100644
index 000000000000..657221db0960
--- /dev/null
+++ b/drivers/sysinfo/iot2050.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) Siemens AG, 2025
+ */
+
+#include <sysinfo.h>
+
+enum sysinfo_id_iot2050 {
+ BOARD_MLFB = SYSID_USER,
+ BOARD_A5E,
+ BOARD_NAME,
+ BOARD_UUID,
+ BOARD_SEBOOT_VER,
+};
--
2.39.5
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