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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 
prom_init_cmdline(void)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 
prom_getenv(char * envname)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 
prom_free_prom_memory(void)49 void __init prom_free_prom_memory(void)
50 {
51 }
52