blob: 146d068bb4ae5f0afc9ccfe42f14acbfa29a0f1f [file] [log] [blame]
Michal Simek64fc7fc2022-11-16 16:36:35 +01001// SPDX-License-Identifier: GPL-2.0
2/*
3 * Xilinx Versal NET SOC driver
4 *
5 * Copyright (C) 2022, Advanced Micro Devices, Inc.
6 */
7
8#include <common.h>
9#include <dm.h>
10#include <soc.h>
11#include <zynqmp_firmware.h>
12#include <asm/io.h>
13#include <asm/arch/hardware.h>
14
15#include <linux/bitfield.h>
16
17/*
18 * v1 -> 0x10 - ES1
19 * v2 -> 0x20 - Production
20 */
21static const char versal_family[] = "Versal NET";
22
23struct soc_xilinx_versal_net_priv {
24 const char *family;
25 char revision;
26};
27
28static int soc_xilinx_versal_net_get_family(struct udevice *dev, char *buf, int size)
29{
30 struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev);
31
32 return snprintf(buf, size, "%s", priv->family);
33}
34
35static int soc_xilinx_versal_net_get_revision(struct udevice *dev, char *buf, int size)
36{
37 struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev);
38
39 return snprintf(buf, size, "v%d", priv->revision);
40}
41
42static const struct soc_ops soc_xilinx_versal_net_ops = {
43 .get_family = soc_xilinx_versal_net_get_family,
44 .get_revision = soc_xilinx_versal_net_get_revision,
45};
46
47static int soc_xilinx_versal_net_probe(struct udevice *dev)
48{
49 struct soc_xilinx_versal_net_priv *priv = dev_get_priv(dev);
50 u32 ret_payload[PAYLOAD_ARG_CNT];
51 int ret;
52
53 priv->family = versal_family;
54
55 if (IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE)) {
56 ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0,
57 ret_payload);
58 if (ret)
59 return ret;
60 } else {
61 ret_payload[2] = readl(PMC_TAP_VERSION);
62 if (!ret_payload[2])
63 return -EINVAL;
64 }
65
66 priv->revision = FIELD_GET(PS_VERSION_MASK, ret_payload[2]);
67
68 return 0;
69}
70
71U_BOOT_DRIVER(soc_xilinx_versal_net) = {
72 .name = "soc_xilinx_versal_net",
73 .id = UCLASS_SOC,
74 .ops = &soc_xilinx_versal_net_ops,
75 .probe = soc_xilinx_versal_net_probe,
76 .priv_auto = sizeof(struct soc_xilinx_versal_net_priv),
77 .flags = DM_FLAG_PRE_RELOC,
78};