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https://github.com/AsahiLinux/u-boot
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42e20f52d9
soc_xilinx_versal driver allows identification of family & revision of versal SoC. This driver is selected by CONFIG_SOC_XILINX_VERSAL. Probe this driver using platdata U_BOOT_DEVICE structure which is defined at mach-versal/cpu.c. Add this config to xilinx_versal_virt_defconfig & xilinx_versal_mini_ospi_defconfig file to select this driver. Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com> Reviewed-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Xilinx Versal SOC driver
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*
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* Copyright (C) 2021 Xilinx, Inc.
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*/
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#include <common.h>
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#include <dm.h>
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#include <soc.h>
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#include <zynqmp_firmware.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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/*
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* v1 -> 0x10 - ES1
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* v2 -> 0x20 - Production
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*/
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static const char versal_family[] = "Versal";
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struct soc_xilinx_versal_priv {
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const char *family;
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char revision;
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};
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static int soc_xilinx_versal_get_family(struct udevice *dev, char *buf, int size)
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{
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struct soc_xilinx_versal_priv *priv = dev_get_priv(dev);
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return snprintf(buf, size, "%s", priv->family);
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}
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static int soc_xilinx_versal_get_revision(struct udevice *dev, char *buf, int size)
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{
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struct soc_xilinx_versal_priv *priv = dev_get_priv(dev);
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return snprintf(buf, size, "v%d", priv->revision);
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}
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static const struct soc_ops soc_xilinx_versal_ops = {
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.get_family = soc_xilinx_versal_get_family,
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.get_revision = soc_xilinx_versal_get_revision,
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};
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static int soc_xilinx_versal_probe(struct udevice *dev)
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{
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struct soc_xilinx_versal_priv *priv = dev_get_priv(dev);
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u32 ret_payload[4];
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int ret;
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priv->family = versal_family;
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if (IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE)) {
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ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0,
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ret_payload);
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if (ret)
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return ret;
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} else {
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ret_payload[2] = readl(VERSAL_PS_PMC_VERSION);
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if (!ret_payload[2])
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return -EINVAL;
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}
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priv->revision = ret_payload[2] >> VERSAL_PS_VER_SHIFT;
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return 0;
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}
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U_BOOT_DRIVER(soc_xilinx_versal) = {
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.name = "soc_xilinx_versal",
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.id = UCLASS_SOC,
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.ops = &soc_xilinx_versal_ops,
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.probe = soc_xilinx_versal_probe,
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.priv_auto = sizeof(struct soc_xilinx_versal_priv),
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.flags = DM_FLAG_PRE_RELOC,
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};
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