static const char *socinfo_to_package_id(u32 socinfo) { unsigned int pack = socinfo_to_pack(socinfo) & 0xf0; unsigned int major = socinfo_to_major(socinfo); int i; for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) { if (soc_packages[i].major_id == major && soc_packages[i].pack_id == pack) return soc_packages[i].name; } return "Unknown"; }
int show_board_info(void) { struct regmap *regmap; int nodeoffset, ret; ofnode node; unsigned int socinfo; /* find the offset of compatible node */ nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "amlogic,meson-gx-ao-secure"); if (nodeoffset < 0) return 0; /* check if chip-id is available */ if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL)) return 0; /* get regmap from the syscon node */ node = offset_to_ofnode(nodeoffset); regmap = syscon_node_to_regmap(node); if (IS_ERR(regmap)) { printf("%s: failed to get regmap\n", __func__); return 0; } /* read soc info */ ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo); if (ret && !socinfo) { printf("%s: invalid chipid value\n", __func__); return 0; } /* print board information */ print_board_model(); printf("Soc: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n", socinfo_to_soc_id(socinfo), socinfo_to_package_id(socinfo), socinfo_to_major(socinfo), socinfo_to_minor(socinfo), socinfo_to_pack(socinfo), socinfo_to_misc(socinfo)); return 0; }
int __init meson_gx_socinfo_init(void) { struct soc_device_attribute *soc_dev_attr; struct soc_device *soc_dev; struct device_node *np; struct regmap *regmap; unsigned int socinfo; struct device *dev; int ret; /* look up for chipid node */ np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gx-ao-secure"); if (!np) return -ENODEV; /* check if interface is enabled */ if (!of_device_is_available(np)) return -ENODEV; /* check if chip-id is available */ if (!of_property_read_bool(np, "amlogic,has-chip-id")) return -ENODEV; /* node should be a syscon */ regmap = syscon_node_to_regmap(np); of_node_put(np); if (IS_ERR(regmap)) { pr_err("%s: failed to get regmap\n", __func__); return -ENODEV; } ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo); if (ret < 0) return ret; if (!socinfo) { pr_err("%s: invalid chipid value\n", __func__); return -EINVAL; } soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); if (!soc_dev_attr) return -ENODEV; soc_dev_attr->family = "Amlogic Meson"; np = of_find_node_by_path("/"); of_property_read_string(np, "model", &soc_dev_attr->machine); of_node_put(np); soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x:%x - %x:%x", socinfo_to_major(socinfo), socinfo_to_minor(socinfo), socinfo_to_pack(socinfo), socinfo_to_misc(socinfo)); soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%s (%s)", socinfo_to_soc_id(socinfo), socinfo_to_package_id(socinfo)); soc_dev = soc_device_register(soc_dev_attr); if (IS_ERR(soc_dev)) { kfree(soc_dev_attr->revision); kfree_const(soc_dev_attr->soc_id); kfree(soc_dev_attr); return PTR_ERR(soc_dev); } dev = soc_device_to_device(soc_dev); dev_info(dev, "Amlogic Meson %s Revision %x:%x (%x:%x) Detected\n", soc_dev_attr->soc_id, socinfo_to_major(socinfo), socinfo_to_minor(socinfo), socinfo_to_pack(socinfo), socinfo_to_misc(socinfo)); return 0; }