loongson2ef/common/machtype.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Copyright (C) 2009 Lemote Inc.
0004  * Author: Wu Zhangjin, wuzhangjin@gmail.com
0005  *
0006  * Copyright (c) 2009 Zhang Le <r0bertz@gentoo.org>
0007  */
0008 #include <linux/errno.h>
0009 #include <asm/bootinfo.h>
0010
0011 #include <loongson.h>
0012 #include <machine.h>
0013
0014 /* please ensure the length of the machtype string is less than 50 */
0015 #define MACHTYPE_LEN 50
0016
0017 static const char *system_types[] = {
0018     [MACH_LOONGSON_UNKNOWN] = "unknown loongson machine",
0019     [MACH_LEMOTE_FL2E]  = "lemote-fuloong-2e-box",
0020     [MACH_LEMOTE_FL2F]  = "lemote-fuloong-2f-box",
0021     [MACH_LEMOTE_ML2F7] = "lemote-mengloong-2f-7inches",
0022     [MACH_LEMOTE_YL2F89]    = "lemote-yeeloong-2f-8.9inches",
0023     [MACH_DEXXON_GDIUM2F10] = "dexxon-gdium-2f",
0024     [MACH_LEMOTE_NAS]   = "lemote-nas-2f",
0025     [MACH_LEMOTE_LL2F]  = "lemote-lynloong-2f",
0026     [MACH_LOONGSON_END] = NULL,
0027 };
0028
0029 const char *get_system_type(void)
0030 {
0031     return system_types[mips_machtype];
0032 }
0033
0034 void __weak __init mach_prom_init_machtype(void)
0035 {
0036 }
0037
0038 void __init prom_init_machtype(void)
0039 {
0040     char *p, str[MACHTYPE_LEN + 1];
0041     int machtype = MACH_LEMOTE_FL2E;
0042
0043     mips_machtype = LOONGSON_MACHTYPE;
0044
0045     p = strstr(arcs_cmdline, "machtype=");
0046     if (!p) {
0047         mach_prom_init_machtype();
0048         return;
0049     }
0050     p += strlen("machtype=");
0051     strncpy(str, p, MACHTYPE_LEN);
0052     str[MACHTYPE_LEN] = '\0';
0053     p = strstr(str, " ");
0054     if (p)
0055         *p = '\0';
0056
0057     for (; system_types[machtype]; machtype++)
0058         if (strstr(system_types[machtype], str)) {
0059             mips_machtype = machtype;
0060             break;
0061         }
0062 }