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author | Michal Simek <michal.simek@amd.com> | 2022-11-16 16:36:35 +0100 |
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committer | Michal Simek <michal.simek@amd.com> | 2022-11-22 15:02:07 +0100 |
commit | 64fc7fc887a5341bff46ac030d0b5c68eb781b5a (patch) | |
tree | 5e229f763b8df4d011a4f4acc771a996439d616f /drivers | |
parent | de4a22e70328893289747ec4e1f4bfb2143adf26 (diff) | |
download | u-boot-64fc7fc887a5341bff46ac030d0b5c68eb781b5a.zip u-boot-64fc7fc887a5341bff46ac030d0b5c68eb781b5a.tar.gz u-boot-64fc7fc887a5341bff46ac030d0b5c68eb781b5a.tar.bz2 |
soc: xilinx: versal-net: Add soc_xilinx_versal_net driver
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>
Link: https://lore.kernel.org/r/613d6bcffd9070f62cf348079ed16c120f8fc56f.1668612993.git.michal.simek@amd.com
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/soc/Kconfig | 8 | ||||
-rw-r--r-- | drivers/soc/Makefile | 1 | ||||
-rw-r--r-- | drivers/soc/soc_xilinx_versal_net.c | 78 |
3 files changed, 87 insertions, 0 deletions
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index 292dc41..acf555b 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 031fa76..8438565 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 0000000..146d068 --- /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, +}; |