1 /* 2 * Carsten Langgaard, carstenl@mips.com 3 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. 4 * 5 * This program is free software; you can distribute it and/or modify it 6 * under the terms of the GNU General Public License (Version 2) as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * for more details. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, write to the Free Software Foundation, Inc., 16 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 17 */ 18 #include <linux/init.h> 19 #include <linux/ioport.h> 20 #include <linux/pm.h> 21 #include <linux/time.h> 22 23 #include <asm/reboot.h> 24 #include <asm/mach-ar7/ar7.h> 25 #include <asm/mach-ar7/prom.h> 26 27 static void ar7_machine_restart(char *command) 28 { 29 u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1); 30 31 writel(1, softres_reg); 32 } 33 34 static void ar7_machine_halt(void) 35 { 36 while (1) 37 ; 38 } 39 40 static void ar7_machine_power_off(void) 41 { 42 u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1); 43 u32 power_state = readl(power_reg) | (3 << 30); 44 45 writel(power_state, power_reg); 46 ar7_machine_halt(); 47 } 48 49 const char *get_system_type(void) 50 { 51 u16 chip_id = ar7_chip_id(); 52 u16 titan_variant_id = titan_chip_id(); 53 54 switch (chip_id) { 55 case AR7_CHIP_7100: 56 return "TI AR7 (TNETD7100)"; 57 case AR7_CHIP_7200: 58 return "TI AR7 (TNETD7200)"; 59 case AR7_CHIP_7300: 60 return "TI AR7 (TNETD7300)"; 61 case AR7_CHIP_TITAN: 62 switch (titan_variant_id) { 63 case TITAN_CHIP_1050: 64 return "TI AR7 (TNETV1050)"; 65 case TITAN_CHIP_1055: 66 return "TI AR7 (TNETV1055)"; 67 case TITAN_CHIP_1056: 68 return "TI AR7 (TNETV1056)"; 69 case TITAN_CHIP_1060: 70 return "TI AR7 (TNETV1060)"; 71 } 72 default: 73 return "TI AR7 (unknown)"; 74 } 75 } 76 77 static int __init ar7_init_console(void) 78 { 79 return 0; 80 } 81 console_initcall(ar7_init_console); 82 83 /* 84 * Initializes basic routines and structures pointers, memory size (as 85 * given by the bios and saves the command line. 86 */ 87 void __init plat_mem_setup(void) 88 { 89 unsigned long io_base; 90 91 _machine_restart = ar7_machine_restart; 92 _machine_halt = ar7_machine_halt; 93 pm_power_off = ar7_machine_power_off; 94 95 io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); 96 if (!io_base) 97 panic("Can't remap IO base!"); 98 set_io_port_base(io_base); 99 100 prom_meminit(); 101 102 printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n", 103 get_system_type(), ar7_chip_id(), ar7_chip_rev()); 104 } 105