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 { "S905Y2", 0x28, 0x30, 0xf0 },
68 { "S905X2", 0x28, 0x40, 0xf0 },
69 { "A311D", 0x29, 0x10, 0xf0 },
70 { "S922X", 0x29, 0x40, 0xf0 },
71 { "S905D3", 0x2b, 0x4, 0xf5 },
72 { "S905X3", 0x2b, 0x5, 0xf5 },
73 { "S905X3", 0x2b, 0x10, 0x3f },
74 { "S905D3", 0x2b, 0x30, 0x3f },
75 { "A113L", 0x2c, 0x0, 0xf8 },
76 };
77
78 DECLARE_GLOBAL_DATA_PTR;
79
socinfo_to_major(u32 socinfo)80 static inline unsigned int socinfo_to_major(u32 socinfo)
81 {
82 return FIELD_GET(SOCINFO_MAJOR, socinfo);
83 }
84
socinfo_to_minor(u32 socinfo)85 static inline unsigned int socinfo_to_minor(u32 socinfo)
86 {
87 return FIELD_GET(SOCINFO_MINOR, socinfo);
88 }
89
socinfo_to_pack(u32 socinfo)90 static inline unsigned int socinfo_to_pack(u32 socinfo)
91 {
92 return FIELD_GET(SOCINFO_PACK, socinfo);
93 }
94
socinfo_to_misc(u32 socinfo)95 static inline unsigned int socinfo_to_misc(u32 socinfo)
96 {
97 return FIELD_GET(SOCINFO_MISC, socinfo);
98 }
99
socinfo_to_package_id(u32 socinfo)100 static const char *socinfo_to_package_id(u32 socinfo)
101 {
102 unsigned int pack = socinfo_to_pack(socinfo);
103 unsigned int major = socinfo_to_major(socinfo);
104 int i;
105
106 for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
107 if (soc_packages[i].major_id == major &&
108 soc_packages[i].pack_id ==
109 (pack & soc_packages[i].pack_mask))
110 return soc_packages[i].name;
111 }
112
113 return "Unknown";
114 }
115
socinfo_to_soc_id(u32 socinfo)116 static const char *socinfo_to_soc_id(u32 socinfo)
117 {
118 unsigned int id = socinfo_to_major(socinfo);
119 int i;
120
121 for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
122 if (soc_ids[i].id == id)
123 return soc_ids[i].name;
124 }
125
126 return "Unknown";
127 }
128
print_board_model(void)129 static void print_board_model(void)
130 {
131 const char *model;
132 model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
133 printf("Model: %s\n", model ? model : "Unknown");
134 }
135
get_socinfo(void)136 static unsigned int get_socinfo(void)
137 {
138 struct regmap *regmap;
139 int nodeoffset, ret;
140 ofnode node;
141 unsigned int socinfo;
142
143 /* find the offset of compatible node */
144 nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
145 "amlogic,meson-gx-ao-secure");
146 if (nodeoffset < 0)
147 return 0;
148
149 /* check if chip-id is available */
150 if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
151 return 0;
152
153 /* get regmap from the syscon node */
154 node = offset_to_ofnode(nodeoffset);
155 regmap = syscon_node_to_regmap(node);
156 if (IS_ERR(regmap)) {
157 printf("%s: failed to get regmap\n", __func__);
158 return 0;
159 }
160
161 /* read soc info */
162 ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
163 if (ret && !socinfo) {
164 printf("%s: invalid chipid value\n", __func__);
165 return 0;
166 }
167
168 return socinfo;
169 }
170
show_board_info(void)171 int show_board_info(void)
172 {
173 unsigned int socinfo;
174
175 /* print board information */
176 print_board_model();
177
178 socinfo = get_socinfo();
179 if (!socinfo)
180 return 0;
181
182 printf("SoC: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
183 socinfo_to_soc_id(socinfo),
184 socinfo_to_package_id(socinfo),
185 socinfo_to_major(socinfo),
186 socinfo_to_minor(socinfo),
187 socinfo_to_pack(socinfo),
188 socinfo_to_misc(socinfo));
189
190 return 0;
191 }
192
meson_get_soc_rev(char * buff,size_t buff_len)193 int meson_get_soc_rev(char *buff, size_t buff_len)
194 {
195 unsigned int socinfo;
196
197 socinfo = get_socinfo();
198 if (!socinfo)
199 return -1;
200
201 /* Write SoC info */
202 return snprintf(buff, buff_len, "%x", socinfo_to_minor(socinfo));
203 }
204