1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2019 Julien Masson <jmasson@baylibre.com>
4 * (C) Copyright 2019 Neil Armstrong <narmstrong@baylibre.com>
5 */
6
7 #include <common.h>
8 #include <init.h>
9 #include <asm/global_data.h>
10 #include <asm/io.h>
11 #include <dm.h>
12 #include <linux/bitfield.h>
13 #include <regmap.h>
14 #include <syscon.h>
15 #include <linux/bitops.h>
16 #include <linux/err.h>
17
18 #define AO_SEC_SD_CFG8 0xe0
19 #define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8
20
21 #define SOCINFO_MAJOR GENMASK(31, 24)
22 #define SOCINFO_PACK GENMASK(23, 16)
23 #define SOCINFO_MINOR GENMASK(15, 8)
24 #define SOCINFO_MISC GENMASK(7, 0)
25
26 static const struct meson_gx_soc_id {
27 const char *name;
28 unsigned int id;
29 } soc_ids[] = {
30 { "GXBB", 0x1f },
31 { "GXTVBB", 0x20 },
32 { "GXL", 0x21 },
33 { "GXM", 0x22 },
34 { "TXL", 0x23 },
35 { "TXLX", 0x24 },
36 { "AXG", 0x25 },
37 { "GXLX", 0x26 },
38 { "TXHD", 0x27 },
39 { "G12A", 0x28 },
40 { "G12B", 0x29 },
41 { "SM1", 0x2b },
42 { "A1", 0x2c },
43 };
44
45 static const struct meson_gx_package_id {
46 const char *name;
47 unsigned int major_id;
48 unsigned int pack_id;
49 unsigned int pack_mask;
50 } soc_packages[] = {
51 { "S905", 0x1f, 0, 0x20 }, /* pack_id != 0x20 */
52 { "S905H", 0x1f, 0x3, 0xf }, /* pack_id & 0xf == 0x3 */
53 { "S905M", 0x1f, 0x20, 0xf0 }, /* pack_id == 0x20 */
54 { "S905D", 0x21, 0, 0xf0 },
55 { "S905X", 0x21, 0x80, 0xf0 },
56 { "S905W", 0x21, 0xa0, 0xf0 },
57 { "S905L", 0x21, 0xc0, 0xf0 },
58 { "S905M2", 0x21, 0xe0, 0xf0 },
59 { "S805X", 0x21, 0x30, 0xf0 },
60 { "S805Y", 0x21, 0xb0, 0xf0 },
61 { "S912", 0x22, 0, 0x0 }, /* Only S912 is known for GXM */
62 { "962X", 0x24, 0x10, 0xf0 },
63 { "962E", 0x24, 0x20, 0xf0 },
64 { "A113X", 0x25, 0x37, 0xff },
65 { "A113D", 0x25, 0x22, 0xff },
66 { "S905D2", 0x28, 0x10, 0xf0 },
67 { "S905X2", 0x28, 0x40, 0xf0 },
68 { "A311D", 0x29, 0x10, 0xf0 },
69 { "S922X", 0x29, 0x40, 0xf0 },
70 { "S905D3", 0x2b, 0x4, 0xf5 },
71 { "S905X3", 0x2b, 0x5, 0xf5 },
72 { "S905X3", 0x2b, 0x10, 0x3f },
73 { "S905D3", 0x2b, 0x30, 0x3f },
74 { "A113L", 0x2c, 0x0, 0xf8 },
75 };
76
77 DECLARE_GLOBAL_DATA_PTR;
78
socinfo_to_major(u32 socinfo)79 static inline unsigned int socinfo_to_major(u32 socinfo)
80 {
81 return FIELD_GET(SOCINFO_MAJOR, socinfo);
82 }
83
socinfo_to_minor(u32 socinfo)84 static inline unsigned int socinfo_to_minor(u32 socinfo)
85 {
86 return FIELD_GET(SOCINFO_MINOR, socinfo);
87 }
88
socinfo_to_pack(u32 socinfo)89 static inline unsigned int socinfo_to_pack(u32 socinfo)
90 {
91 return FIELD_GET(SOCINFO_PACK, socinfo);
92 }
93
socinfo_to_misc(u32 socinfo)94 static inline unsigned int socinfo_to_misc(u32 socinfo)
95 {
96 return FIELD_GET(SOCINFO_MISC, socinfo);
97 }
98
socinfo_to_package_id(u32 socinfo)99 static const char *socinfo_to_package_id(u32 socinfo)
100 {
101 unsigned int pack = socinfo_to_pack(socinfo);
102 unsigned int major = socinfo_to_major(socinfo);
103 int i;
104
105 for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
106 if (soc_packages[i].major_id == major &&
107 soc_packages[i].pack_id ==
108 (pack & soc_packages[i].pack_mask))
109 return soc_packages[i].name;
110 }
111
112 return "Unknown";
113 }
114
socinfo_to_soc_id(u32 socinfo)115 static const char *socinfo_to_soc_id(u32 socinfo)
116 {
117 unsigned int id = socinfo_to_major(socinfo);
118 int i;
119
120 for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
121 if (soc_ids[i].id == id)
122 return soc_ids[i].name;
123 }
124
125 return "Unknown";
126 }
127
print_board_model(void)128 static void print_board_model(void)
129 {
130 const char *model;
131 model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
132 printf("Model: %s\n", model ? model : "Unknown");
133 }
134
get_socinfo(void)135 static unsigned int get_socinfo(void)
136 {
137 struct regmap *regmap;
138 int nodeoffset, ret;
139 ofnode node;
140 unsigned int socinfo;
141
142 /* find the offset of compatible node */
143 nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
144 "amlogic,meson-gx-ao-secure");
145 if (nodeoffset < 0)
146 return 0;
147
148 /* check if chip-id is available */
149 if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
150 return 0;
151
152 /* get regmap from the syscon node */
153 node = offset_to_ofnode(nodeoffset);
154 regmap = syscon_node_to_regmap(node);
155 if (IS_ERR(regmap)) {
156 printf("%s: failed to get regmap\n", __func__);
157 return 0;
158 }
159
160 /* read soc info */
161 ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
162 if (ret && !socinfo) {
163 printf("%s: invalid chipid value\n", __func__);
164 return 0;
165 }
166
167 return socinfo;
168 }
169
show_board_info(void)170 int show_board_info(void)
171 {
172 unsigned int socinfo;
173
174 /* print board information */
175 print_board_model();
176
177 socinfo = get_socinfo();
178 if (!socinfo)
179 return 0;
180
181 printf("SoC: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
182 socinfo_to_soc_id(socinfo),
183 socinfo_to_package_id(socinfo),
184 socinfo_to_major(socinfo),
185 socinfo_to_minor(socinfo),
186 socinfo_to_pack(socinfo),
187 socinfo_to_misc(socinfo));
188
189 return 0;
190 }
191
meson_get_soc_rev(char * buff,size_t buff_len)192 int meson_get_soc_rev(char *buff, size_t buff_len)
193 {
194 unsigned int socinfo;
195
196 socinfo = get_socinfo();
197 if (!socinfo)
198 return -1;
199
200 /* Write SoC info */
201 return snprintf(buff, buff_len, "%x", socinfo_to_minor(socinfo));
202 }
203