1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2019 Julien Masson <jmasson@baylibre.com>
4 * (C) Copyright 2019 Neil Armstrong <narmstrong@baylibre.com>
11 #include <linux/bitfield.h>
14 #include <linux/bitops.h>
15 #include <linux/err.h>
17 #define AO_SEC_SD_CFG8 0xe0
18 #define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8
20 #define SOCINFO_MAJOR GENMASK(31, 24)
21 #define SOCINFO_PACK GENMASK(23, 16)
22 #define SOCINFO_MINOR GENMASK(15, 8)
23 #define SOCINFO_MISC GENMASK(7, 0)
25 static const struct meson_gx_soc_id {
43 static const struct meson_gx_package_id {
45 unsigned int major_id;
47 unsigned int pack_mask;
49 { "S905", 0x1f, 0, 0x20 }, /* pack_id != 0x20 */
50 { "S905H", 0x1f, 0x3, 0xf }, /* pack_id & 0xf == 0x3 */
51 { "S905M", 0x1f, 0x20, 0xf0 }, /* pack_id == 0x20 */
52 { "S905D", 0x21, 0, 0xf0 },
53 { "S905X", 0x21, 0x80, 0xf0 },
54 { "S905W", 0x21, 0xa0, 0xf0 },
55 { "S905L", 0x21, 0xc0, 0xf0 },
56 { "S905M2", 0x21, 0xe0, 0xf0 },
57 { "S805X", 0x21, 0x30, 0xf0 },
58 { "S805Y", 0x21, 0xb0, 0xf0 },
59 { "S912", 0x22, 0, 0x0 }, /* Only S912 is known for GXM */
60 { "962X", 0x24, 0x10, 0xf0 },
61 { "962E", 0x24, 0x20, 0xf0 },
62 { "A113X", 0x25, 0x37, 0xff },
63 { "A113D", 0x25, 0x22, 0xff },
64 { "S905D2", 0x28, 0x10, 0xf0 },
65 { "S905X2", 0x28, 0x40, 0xf0 },
66 { "A311D", 0x29, 0x10, 0xf0 },
67 { "S922X", 0x29, 0x40, 0xf0 },
68 { "S905X3", 0x2b, 0x5, 0xf },
71 DECLARE_GLOBAL_DATA_PTR;
73 static inline unsigned int socinfo_to_major(u32 socinfo)
75 return FIELD_GET(SOCINFO_MAJOR, socinfo);
78 static inline unsigned int socinfo_to_minor(u32 socinfo)
80 return FIELD_GET(SOCINFO_MINOR, socinfo);
83 static inline unsigned int socinfo_to_pack(u32 socinfo)
85 return FIELD_GET(SOCINFO_PACK, socinfo);
88 static inline unsigned int socinfo_to_misc(u32 socinfo)
90 return FIELD_GET(SOCINFO_MISC, socinfo);
93 static const char *socinfo_to_package_id(u32 socinfo)
95 unsigned int pack = socinfo_to_pack(socinfo);
96 unsigned int major = socinfo_to_major(socinfo);
99 for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
100 if (soc_packages[i].major_id == major &&
101 soc_packages[i].pack_id ==
102 (pack & soc_packages[i].pack_mask))
103 return soc_packages[i].name;
109 static const char *socinfo_to_soc_id(u32 socinfo)
111 unsigned int id = socinfo_to_major(socinfo);
114 for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
115 if (soc_ids[i].id == id)
116 return soc_ids[i].name;
122 static void print_board_model(void)
125 model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
126 printf("Model: %s\n", model ? model : "Unknown");
129 int show_board_info(void)
131 struct regmap *regmap;
134 unsigned int socinfo;
136 /* find the offset of compatible node */
137 nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
138 "amlogic,meson-gx-ao-secure");
142 /* check if chip-id is available */
143 if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
146 /* get regmap from the syscon node */
147 node = offset_to_ofnode(nodeoffset);
148 regmap = syscon_node_to_regmap(node);
149 if (IS_ERR(regmap)) {
150 printf("%s: failed to get regmap\n", __func__);
155 ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
156 if (ret && !socinfo) {
157 printf("%s: invalid chipid value\n", __func__);
161 /* print board information */
163 printf("SoC: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
164 socinfo_to_soc_id(socinfo),
165 socinfo_to_package_id(socinfo),
166 socinfo_to_major(socinfo),
167 socinfo_to_minor(socinfo),
168 socinfo_to_pack(socinfo),
169 socinfo_to_misc(socinfo));