Add soc_xilinx_versal_net driver to identify the family & revision of versal-net SoC. Add Kconfig option CONFIG_SOC_XILINX_VERSAL_NET to enable/disable this driver. To enable this driver by default, add this config to xilinx_versal_net_virt_defconfig file. This driver will be probed using platdata U_BOOT_DEVICE structure which is specified in mach-versal-net/cpu.c.
Signed-off-by: Michal Simek michal.simek@amd.com Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@amd.com ---
MAINTAINERS | 1 + arch/arm/mach-versal-net/cpu.c | 5 ++ configs/xilinx_versal_net_virt_defconfig | 2 + drivers/soc/Kconfig | 8 +++ drivers/soc/Makefile | 1 + drivers/soc/soc_xilinx_versal_net.c | 78 ++++++++++++++++++++++++ 6 files changed, 95 insertions(+) create mode 100644 drivers/soc/soc_xilinx_versal_net.c
diff --git a/MAINTAINERS b/MAINTAINERS index 8d3d528650a7..b88f02fea772 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -655,6 +655,7 @@ M: Michal Simek michal.simek@amd.com S: Maintained T: git https://source.denx.de/u-boot/custodians/u-boot-microblaze.git F: arch/arm/mach-versal-net/ +F: drivers/soc/soc_xilinx_versal_net.c N: (?<!uni)versal-net
ARM VERSAL diff --git a/arch/arm/mach-versal-net/cpu.c b/arch/arm/mach-versal-net/cpu.c index 4c9b15411df2..a82741e70fc8 100644 --- a/arch/arm/mach-versal-net/cpu.c +++ b/arch/arm/mach-versal-net/cpu.c @@ -15,6 +15,7 @@ #include <asm/arch/hardware.h> #include <asm/arch/sys_proto.h> #include <asm/cache.h> +#include <dm/platdata.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -87,3 +88,7 @@ u64 get_page_table_size(void) { return 0x14000; } + +U_BOOT_DRVINFO(soc_xilinx_versal_net) = { + .name = "soc_xilinx_versal_net", +}; diff --git a/configs/xilinx_versal_net_virt_defconfig b/configs/xilinx_versal_net_virt_defconfig index 8a53490ba87d..431a8de9fcf2 100644 --- a/configs/xilinx_versal_net_virt_defconfig +++ b/configs/xilinx_versal_net_virt_defconfig @@ -108,6 +108,8 @@ CONFIG_RESET_ZYNQMP=y CONFIG_ARM_DCC=y CONFIG_PL01X_SERIAL=y CONFIG_XILINX_UARTLITE=y +CONFIG_SOC_DEVICE=y +CONFIG_SOC_XILINX_VERSAL_NET=y CONFIG_SPI=y CONFIG_DM_SPI=y CONFIG_CADENCE_QSPI=y diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index 292dc41b6fa2..acf555baaec2 100644 --- a/drivers/soc/Kconfig +++ b/drivers/soc/Kconfig @@ -32,6 +32,14 @@ config SOC_XILINX_VERSAL This allows other drivers to verify the SoC familiy & revision using matching SoC attributes.
+config SOC_XILINX_VERSAL_NET + bool "Enable SoC Device ID driver for Xilinx Versal NET" + depends on SOC_DEVICE && ARCH_VERSAL_NET + help + Enable this option to select SoC device id driver for Xilinx Versal NET. + This allows other drivers to verify the SoC familiy & revision using + matching SoC attributes. + source "drivers/soc/ti/Kconfig"
endmenu diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index 031fa7612f48..84385650d46d 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -8,3 +8,4 @@ obj-$(CONFIG_SOC_DEVICE_TI_K3) += soc_ti_k3.o obj-$(CONFIG_SANDBOX) += soc_sandbox.o obj-$(CONFIG_SOC_XILINX_ZYNQMP) += soc_xilinx_zynqmp.o obj-$(CONFIG_SOC_XILINX_VERSAL) += soc_xilinx_versal.o +obj-$(CONFIG_SOC_XILINX_VERSAL_NET) += soc_xilinx_versal_net.o diff --git a/drivers/soc/soc_xilinx_versal_net.c b/drivers/soc/soc_xilinx_versal_net.c new file mode 100644 index 000000000000..146d068bb4ae --- /dev/null +++ b/drivers/soc/soc_xilinx_versal_net.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Xilinx Versal NET SOC driver + * + * Copyright (C) 2022, Advanced Micro Devices, Inc. + */ + +#include <common.h> +#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 versal_family[] = "Versal NET"; + +struct soc_xilinx_versal_net_priv { + const char *family; + char revision; +}; + +static int soc_xilinx_versal_net_get_family(struct udevice *dev, char *buf, int size) +{ + struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev); + + return snprintf(buf, size, "%s", priv->family); +} + +static int soc_xilinx_versal_net_get_revision(struct udevice *dev, char *buf, int size) +{ + struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev); + + return snprintf(buf, size, "v%d", priv->revision); +} + +static const struct soc_ops soc_xilinx_versal_net_ops = { + .get_family = soc_xilinx_versal_net_get_family, + .get_revision = soc_xilinx_versal_net_get_revision, +}; + +static int soc_xilinx_versal_net_probe(struct udevice *dev) +{ + struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev); + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + priv->family = versal_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_xilinx_versal_net) = { + .name = "soc_xilinx_versal_net", + .id = UCLASS_SOC, + .ops = &soc_xilinx_versal_net_ops, + .probe = soc_xilinx_versal_net_probe, + .priv_auto = sizeof(struct soc_xilinx_versal_net_priv), + .flags = DM_FLAG_PRE_RELOC, +};