Loading...
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 | // SPDX-License-Identifier: GPL-2.0 /* * Author: Huacai Chen <chenhuacai@loongson.cn> * * Copyright (C) 2020-2022 Loongson Technology Corporation Limited */ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/efi.h> #include <linux/export.h> #include <linux/memblock.h> #include <linux/of_clk.h> #include <asm/early_ioremap.h> #include <asm/bootinfo.h> #include <asm/loongson.h> #include <asm/setup.h> #include <asm/time.h> u64 efi_system_table; struct loongson_system_configuration loongson_sysconf; EXPORT_SYMBOL(loongson_sysconf); void __init init_environ(void) { int efi_boot = fw_arg0; char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE); if (efi_boot) set_bit(EFI_BOOT, &efi.flags); else clear_bit(EFI_BOOT, &efi.flags); strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE); strscpy(init_command_line, cmdline, COMMAND_LINE_SIZE); early_memunmap(cmdline, COMMAND_LINE_SIZE); efi_system_table = fw_arg2; } static int __init init_cpu_fullname(void) { struct device_node *root; int cpu, ret; char *model; /* Parsing cpuname from DTS model property */ root = of_find_node_by_path("/"); ret = of_property_read_string(root, "model", (const char **)&model); of_node_put(root); if (ret == 0) loongson_sysconf.cpuname = strsep(&model, " "); if (loongson_sysconf.cpuname && !strncmp(loongson_sysconf.cpuname, "Loongson", 8)) { for (cpu = 0; cpu < NR_CPUS; cpu++) __cpu_full_name[cpu] = loongson_sysconf.cpuname; } return 0; } arch_initcall(init_cpu_fullname); static int __init fdt_cpu_clk_init(void) { struct clk *clk; struct device_node *np; np = of_get_cpu_node(0, NULL); if (!np) return -ENODEV; clk = of_clk_get(np, 0); if (IS_ERR(clk)) return -ENODEV; cpu_clock_freq = clk_get_rate(clk); clk_put(clk); return 0; } late_initcall(fdt_cpu_clk_init); static ssize_t boardinfo_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { return sprintf(buf, "BIOS Information\n" "Vendor\t\t\t: %s\n" "Version\t\t\t: %s\n" "ROM Size\t\t: %d KB\n" "Release Date\t\t: %s\n\n" "Board Information\n" "Manufacturer\t\t: %s\n" "Board Name\t\t: %s\n" "Family\t\t\t: LOONGSON64\n\n", b_info.bios_vendor, b_info.bios_version, b_info.bios_size, b_info.bios_release_date, b_info.board_vendor, b_info.board_name); } static struct kobj_attribute boardinfo_attr = __ATTR(boardinfo, 0444, boardinfo_show, NULL); static int __init boardinfo_init(void) { struct kobject *loongson_kobj; loongson_kobj = kobject_create_and_add("loongson", firmware_kobj); return sysfs_create_file(loongson_kobj, &boardinfo_attr.attr); } late_initcall(boardinfo_init); |