1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Xilinx ZynqMP SOC driver
4 *
5 * Copyright (C) 2021 Xilinx, Inc.
6 */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <asm/cache.h>
11 #include <soc.h>
12 #include <zynqmp_firmware.h>
13 #include <asm/arch/sys_proto.h>
14 #include <asm/arch/hardware.h>
15
16 /*
17 * Zynqmp has 4 silicon revisions
18 * v0 -> 0(XCZU9EG-ES1)
19 * v1 -> 1(XCZU3EG-ES1, XCZU15EG-ES1)
20 * v2 -> 2(XCZU7EV-ES1, XCZU9EG-ES2, XCZU19EG-ES1)
21 * v3 -> 3(Production Level)
22 */
23 static const char zynqmp_family[] = "ZynqMP";
24
25 struct soc_xilinx_zynqmp_priv {
26 const char *family;
27 char revision;
28 };
29
soc_xilinx_zynqmp_get_family(struct udevice * dev,char * buf,int size)30 static int soc_xilinx_zynqmp_get_family(struct udevice *dev, char *buf, int size)
31 {
32 struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
33
34 return snprintf(buf, size, "%s", priv->family);
35 }
36
soc_xilinx_zynqmp_get_revision(struct udevice * dev,char * buf,int size)37 static int soc_xilinx_zynqmp_get_revision(struct udevice *dev, char *buf, int size)
38 {
39 struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
40
41 return snprintf(buf, size, "v%d", priv->revision);
42 }
43
44 static const struct soc_ops soc_xilinx_zynqmp_ops = {
45 .get_family = soc_xilinx_zynqmp_get_family,
46 .get_revision = soc_xilinx_zynqmp_get_revision,
47 };
48
soc_xilinx_zynqmp_probe(struct udevice * dev)49 static int soc_xilinx_zynqmp_probe(struct udevice *dev)
50 {
51 struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
52 u32 ret_payload[4];
53 int ret;
54
55 priv->family = zynqmp_family;
56
57 if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3 ||
58 !IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE))
59 ret = zynqmp_mmio_read(ZYNQMP_PS_VERSION, &ret_payload[2]);
60 else
61 ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0,
62 ret_payload);
63 if (ret < 0)
64 return ret;
65
66 priv->revision = ret_payload[2] & ZYNQMP_PS_VER_MASK;
67
68 return 0;
69 }
70
71 U_BOOT_DRIVER(soc_xilinx_zynqmp) = {
72 .name = "soc_xilinx_zynqmp",
73 .id = UCLASS_SOC,
74 .ops = &soc_xilinx_zynqmp_ops,
75 .probe = soc_xilinx_zynqmp_probe,
76 .priv_auto = sizeof(struct soc_xilinx_zynqmp_priv),
77 .flags = DM_FLAG_PRE_RELOC,
78 };
79