Communication is happening via firmware interface (SMC) or via direct
register reading if firmware driver is not available.
Also enable it via defconfig.
Signed-off-by: Michal Simek <michal.si...@amd.com>
---
configs/amd_versal2_virt_defconfig | 1 +
drivers/soc/Kconfig | 8 ++++
drivers/soc/Makefile | 1 +
drivers/soc/soc_amd_versal2.c | 77 ++++++++++++++++++++++++++++++
4 files changed, 87 insertions(+)
create mode 100644 drivers/soc/soc_amd_versal2.c
diff --git a/configs/amd_versal2_virt_defconfig
b/configs/amd_versal2_virt_defconfig
index 5eea07f03f51..8ef86f1f3830 100644
--- a/configs/amd_versal2_virt_defconfig
+++ b/configs/amd_versal2_virt_defconfig
@@ -119,6 +119,7 @@ CONFIG_ARM_DCC=y
CONFIG_PL01X_SERIAL=y
CONFIG_XILINX_UARTLITE=y
CONFIG_SOC_DEVICE=y
+CONFIG_SOC_AMD_VERSAL2=y
CONFIG_SPI=y
CONFIG_DM_SPI=y
CONFIG_ZYNQ_SPI=y
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index 03433bc0e6d2..cee506fe4747 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -9,6 +9,14 @@ config SOC_DEVICE
need different parameters or quirks enabled depending on the
specific device variant in use.
+config SOC_AMD_VERSAL2
+ bool "Enable SoC Device ID driver for AMD Versal Gen 2"
+ depends on SOC_DEVICE && ARCH_VERSAL2
+ help
+ Enable this option to select SoC device id driver for AMD Versal Gen
2.
+ This allows other drivers to verify the SoC familiy & revision using
+ matching SoC attributes.
+
config SOC_DEVICE_TI_K3
depends on SOC_DEVICE && ARCH_K3
bool "Enable SoC Device ID driver for TI K3 SoCs"
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index 610bf816d40a..5ec89a053165 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -2,6 +2,7 @@
#
# Makefile for the U-Boot SOC specific device drivers.
+obj-$(CONFIG_SOC_AMD_VERSAL2) += soc_amd_versal2.o
obj-$(CONFIG_SOC_SAMSUNG) += samsung/
obj-$(CONFIG_SOC_TI) += ti/
obj-$(CONFIG_SOC_DEVICE) += soc-uclass.o
diff --git a/drivers/soc/soc_amd_versal2.c b/drivers/soc/soc_amd_versal2.c
new file mode 100644
index 000000000000..66bcb22b4fa9
--- /dev/null
+++ b/drivers/soc/soc_amd_versal2.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AMD Versal Gen 2 SOC driver
+ *
+ * Copyright (C) 2022 - 2024, Advanced Micro Devices, Inc.
+ */
+
+#include <dm.h>
+#include <soc.h>
+#include <zynqmp_firmware.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+
+#include <linux/bitfield.h>
+
+/*
+ * v1 -> 0x10 - ES1
+ * v2 -> 0x20 - Production
+ */
+static const char versal2_family[] = "Versal Gen 2";
+
+struct soc_amd_versal2_priv {
+ const char *family;
+ char revision;
+};
+
+static int soc_amd_versal2_get_family(struct udevice *dev, char *buf, int size)
+{
+ struct soc_amd_versal2_priv *priv = dev_get_priv(dev);
+
+ return snprintf(buf, size, "%s", priv->family);
+}
+
+static int soc_amd_versal2_get_revision(struct udevice *dev, char *buf, int
size)
+{
+ struct soc_amd_versal2_priv *priv = dev_get_priv(dev);
+
+ return snprintf(buf, size, "v%d", priv->revision);
+}
+
+static const struct soc_ops soc_amd_versal2_ops = {
+ .get_family = soc_amd_versal2_get_family,
+ .get_revision = soc_amd_versal2_get_revision,
+};
+
+static int soc_amd_versal2_probe(struct udevice *dev)
+{
+ struct soc_amd_versal2_priv *priv = dev_get_priv(dev);
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ priv->family = versal2_family;
+
+ if (IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE)) {
+ ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0,
+ ret_payload);
+ if (ret)
+ return ret;
+ } else {
+ ret_payload[2] = readl(PMC_TAP_VERSION);
+ if (!ret_payload[2])
+ return -EINVAL;
+ }
+
+ priv->revision = FIELD_GET(PS_VERSION_MASK, ret_payload[2]);
+
+ return 0;
+}
+
+U_BOOT_DRIVER(soc_amd_versal2) = {
+ .name = "soc_amd_versal2",
+ .id = UCLASS_SOC,
+ .ops = &soc_amd_versal2_ops,
+ .probe = soc_amd_versal2_probe,
+ .priv_auto = sizeof(struct soc_amd_versal2_priv),
+ .flags = DM_FLAG_PRE_RELOC,
+};
--
2.40.1
