1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *
4  *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
5  *  Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
6  *  Copyright (C) 2013 John Crispin <john@phrozen.org>
7  */
8 
9 #include <linux/string.h>
10 #include <linux/of_fdt.h>
11 #include <linux/of_platform.h>
12 
13 #include <asm/bootinfo.h>
14 #include <asm/addrspace.h>
15 
16 #include <asm/mach-ralink/ralink_regs.h>
17 
18 #include "common.h"
19 
20 struct ralink_soc_info soc_info;
21 
22 enum ralink_soc_type ralink_soc;
23 EXPORT_SYMBOL_GPL(ralink_soc);
24 
get_system_type(void)25 const char *get_system_type(void)
26 {
27 	return soc_info.sys_type;
28 }
29 
prom_init_cmdline(void)30 static __init void prom_init_cmdline(void)
31 {
32 	int argc;
33 	char **argv;
34 	int i;
35 
36 	pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
37 	       (unsigned int)fw_arg0, (unsigned int)fw_arg1,
38 	       (unsigned int)fw_arg2, (unsigned int)fw_arg3);
39 
40 	argc = fw_arg0;
41 	argv = (char **) KSEG1ADDR(fw_arg1);
42 
43 	if (!argv) {
44 		pr_debug("argv=%p is invalid, skipping\n",
45 		       argv);
46 		return;
47 	}
48 
49 	for (i = 0; i < argc; i++) {
50 		char *p = (char *) KSEG1ADDR(argv[i]);
51 
52 		if (CPHYSADDR(p) && *p) {
53 			pr_debug("argv[%d]: %s\n", i, p);
54 			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
55 			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
56 		}
57 	}
58 }
59 
prom_init(void)60 void __init prom_init(void)
61 {
62 	prom_soc_init(&soc_info);
63 
64 	pr_info("SoC Type: %s\n", get_system_type());
65 
66 	prom_init_cmdline();
67 }
68