arch/mips/pnx833x/common/prom.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  prom.c:
   4  *
   5  *  Copyright 2008 NXP Semiconductors
   6  *        Chris Steel <chris.steel@nxp.com>
   7  *    Daniel Laird <daniel.j.laird@nxp.com>
   8  *
   9  *  Based on software written by:
  10  *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
  11  */
  12 #include <linux/init.h>
  13 #include <asm/bootinfo.h>
  14 #include <linux/string.h>
  15
  16 void __init prom_init_cmdline(void)
  17 {
  18         int argc = fw_arg0;
  19         char **argv = (char **)fw_arg1;
  20         char *c = &(arcs_cmdline[0]);
  21         int i;
  22
  23         for (i = 1; i < argc; i++) {
  24                 strcpy(c, argv[i]);
  25                 c += strlen(argv[i]);
  26                 if (i < argc-1)
  27                         *c++ = ' ';
  28         }
  29         *c = 0;
  30 }
  31
  32 char __init *prom_getenv(char *envname)
  33 {
  34         extern char **prom_envp;
  35         char **env = prom_envp;
  36         int i;
  37
  38         i = strlen(envname);
  39
  40         while (*env) {
  41                 if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=')
  42                         return *env + i + 1;
  43                 env++;
  44         }
  45
  46         return 0;
  47 }
  48
  49 void __init prom_free_prom_memory(void)
  50 {
  51 }