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a890a53ad2
soc_xilinx_zynqmp driver allows identification of family & revision of zynqmp SoC. This driver is selected by CONFIG_SOC_XILINX_ZYNQMP. Add this config to xilinx_zynqmp_virt_defconfig file. Probe this driver using platdata U_BOOT_DEVICE structure which is specified in mach-zynqmp/cpu.c. 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>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Xilinx ZynqMP 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 <asm/cache.h>
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#include <soc.h>
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#include <zynqmp_firmware.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/hardware.h>
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/*
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* Zynqmp has 4 silicon revisions
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* v0 -> 0(XCZU9EG-ES1)
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* v1 -> 1(XCZU3EG-ES1, XCZU15EG-ES1)
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* v2 -> 2(XCZU7EV-ES1, XCZU9EG-ES2, XCZU19EG-ES1)
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* v3 -> 3(Production Level)
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*/
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static const char zynqmp_family[] = "ZynqMP";
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struct soc_xilinx_zynqmp_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_zynqmp_get_family(struct udevice *dev, char *buf, int size)
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{
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struct soc_xilinx_zynqmp_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_zynqmp_get_revision(struct udevice *dev, char *buf, int size)
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{
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struct soc_xilinx_zynqmp_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_zynqmp_ops = {
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.get_family = soc_xilinx_zynqmp_get_family,
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.get_revision = soc_xilinx_zynqmp_get_revision,
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};
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static int soc_xilinx_zynqmp_probe(struct udevice *dev)
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{
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struct soc_xilinx_zynqmp_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 = zynqmp_family;
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if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3 ||
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!IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE))
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ret = zynqmp_mmio_read(ZYNQMP_PS_VERSION, &ret_payload[2]);
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else
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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 < 0)
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return ret;
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priv->revision = ret_payload[2] & ZYNQMP_PS_VER_MASK;
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return 0;
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}
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U_BOOT_DRIVER(soc_xilinx_zynqmp) = {
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.name = "soc_xilinx_zynqmp",
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.id = UCLASS_SOC,
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.ops = &soc_xilinx_zynqmp_ops,
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.probe = soc_xilinx_zynqmp_probe,
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.priv_auto = sizeof(struct soc_xilinx_zynqmp_priv),
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.flags = DM_FLAG_PRE_RELOC,
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};
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