root/arch/mips/loongson64/common/cmdline.c

DEFINITIONS

1. prom_init_cmdline

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Based on Ocelot Linux port, which is
   4  * Copyright 2001 MontaVista Software Inc.
   5  * Author: jsun@mvista.com or jsun@junsun.net
   6  *
   7  * Copyright 2003 ICT CAS
   8  * Author: Michael Guo <guoyi@ict.ac.cn>
   9  *
  10  * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
  11  * Author: Fuxin Zhang, zhangfx@lemote.com
  12  *
  13  * Copyright (C) 2009 Lemote Inc.
  14  * Author: Wu Zhangjin, wuzhangjin@gmail.com
  15  */
  16 #include <asm/bootinfo.h>
  17 
  18 #include <loongson.h>
  19 
  20 void __init prom_init_cmdline(void)
  21 {
  22         int prom_argc;
  23         /* pmon passes arguments in 32bit pointers */
  24         int *_prom_argv;
  25         int i;
  26         long l;
  27 
  28         /* firmware arguments are initialized in head.S */
  29         prom_argc = fw_arg0;
  30         _prom_argv = (int *)fw_arg1;
  31 
  32         /* arg[0] is "g", the rest is boot parameters */
  33         arcs_cmdline[0] = '\0';
  34         for (i = 1; i < prom_argc; i++) {
  35                 l = (long)_prom_argv[i];
  36                 if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
  37                     >= sizeof(arcs_cmdline))
  38                         break;
  39                 strcat(arcs_cmdline, ((char *)l));
  40                 strcat(arcs_cmdline, " ");
  41         }
  42 
  43         prom_init_machtype();
  44 }