1 /* 2 * This program is free software; you can redistribute it and/or modify it 3 * under the terms of the GNU General Public License version 2 as published 4 * by the Free Software Foundation. 5 * 6 * Copyright (C) 2010 John Crispin <blogic@openwrt.org> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/clk.h> 11 #include <asm/bootinfo.h> 12 #include <asm/time.h> 13 14 #include <lantiq.h> 15 16 #include "prom.h" 17 #include "clk.h" 18 19 static struct ltq_soc_info soc_info; 20 21 unsigned int ltq_get_cpu_ver(void) 22 { 23 return soc_info.rev; 24 } 25 EXPORT_SYMBOL(ltq_get_cpu_ver); 26 27 unsigned int ltq_get_soc_type(void) 28 { 29 return soc_info.type; 30 } 31 EXPORT_SYMBOL(ltq_get_soc_type); 32 33 const char *get_system_type(void) 34 { 35 return soc_info.sys_type; 36 } 37 38 void prom_free_prom_memory(void) 39 { 40 } 41 42 static void __init prom_init_cmdline(void) 43 { 44 int argc = fw_arg0; 45 char **argv = (char **) KSEG1ADDR(fw_arg1); 46 int i; 47 48 for (i = 0; i < argc; i++) { 49 char *p = (char *) KSEG1ADDR(argv[i]); 50 51 if (p && *p) { 52 strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); 53 strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); 54 } 55 } 56 } 57 58 void __init prom_init(void) 59 { 60 struct clk *clk; 61 62 ltq_soc_detect(&soc_info); 63 clk_init(); 64 clk = clk_get(0, "cpu"); 65 snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d", 66 soc_info.name, soc_info.rev); 67 clk_put(clk); 68 soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0'; 69 pr_info("SoC: %s\n", soc_info.sys_type); 70 prom_init_cmdline(); 71 } 72