1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
* Dave Gerlach <d-gerlach@ti.com>
*/
#include <common.h>
#include <dm.h>
#include <soc.h>
#include <asm/io.h>
#define AM65X 0xbb5a
#define J721E 0xbb64
#define J7200 0xbb6d
#define AM64X 0xbb38
#define J721S2 0xbb75
#define AM62X 0xbb7e
#define AM62AX 0xbb8d
#define JTAG_ID_VARIANT_SHIFT 28
#define JTAG_ID_VARIANT_MASK (0xf << 28)
#define JTAG_ID_PARTNO_SHIFT 12
#define JTAG_ID_PARTNO_MASK (0xffff << 12)
struct soc_ti_k3_plat {
const char *family;
const char *revision;
};
static const char *get_family_string(u32 idreg)
{
const char *family;
u32 soc;
soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;
switch (soc) {
case AM65X:
family = "AM65X";
break;
case J721E:
family = "J721E";
break;
case J7200:
family = "J7200";
break;
case AM64X:
family = "AM64X";
break;
case J721S2:
family = "J721S2";
break;
case AM62X:
family = "AM62X";
break;
case AM62AX:
family = "AM62AX";
break;
default:
family = "Unknown Silicon";
};
return family;
}
static char *j721e_rev_string_map[] = {
"1.0", "1.1",
};
static char *typical_rev_string_map[] = {
"1.0", "2.0", "3.0",
};
static const char *get_rev_string(u32 idreg)
{
u32 rev;
u32 soc;
rev = (idreg & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;
switch (soc) {
case J721E:
if (rev > ARRAY_SIZE(j721e_rev_string_map))
goto bail;
return j721e_rev_string_map[rev];
default:
if (rev > ARRAY_SIZE(typical_rev_string_map))
goto bail;
return typical_rev_string_map[rev];
};
bail:
return "Unknown Revision";
}
static int soc_ti_k3_get_family(struct udevice *dev, char *buf, int size)
{
struct soc_ti_k3_plat *plat = dev_get_plat(dev);
snprintf(buf, size, "%s", plat->family);
return 0;
}
static int soc_ti_k3_get_revision(struct udevice *dev, char *buf, int size)
{
struct soc_ti_k3_plat *plat = dev_get_plat(dev);
snprintf(buf, size, "SR%s", plat->revision);
return 0;
}
static const struct soc_ops soc_ti_k3_ops = {
.get_family = soc_ti_k3_get_family,
.get_revision = soc_ti_k3_get_revision,
};
int soc_ti_k3_probe(struct udevice *dev)
{
struct soc_ti_k3_plat *plat = dev_get_plat(dev);
u32 idreg;
void *idreg_addr;
idreg_addr = dev_read_addr_ptr(dev);
if (!idreg_addr)
return -EINVAL;
idreg = readl(idreg_addr);
plat->family = get_family_string(idreg);
plat->revision = get_rev_string(idreg);
return 0;
}
static const struct udevice_id soc_ti_k3_ids[] = {
{ .compatible = "ti,am654-chipid" },
{ }
};
U_BOOT_DRIVER(soc_ti_k3) = {
.name = "soc_ti_k3",
.id = UCLASS_SOC,
.ops = &soc_ti_k3_ops,
.of_match = soc_ti_k3_ids,
.probe = soc_ti_k3_probe,
.plat_auto = sizeof(struct soc_ti_k3_plat),
};
|
