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 #include <asm/mach-ar7/gpio.h> 27 28 static void ar7_machine_restart(char *command) 29 { 30 u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1); 31 32 writel(1, softres_reg); 33 } 34 35 static void ar7_machine_halt(void) 36 { 37 while (1) 38 ; 39 } 40 41 static void ar7_machine_power_off(void) 42 { 43 u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1); 44 u32 power_state = readl(power_reg) | (3 << 30); 45 46 writel(power_state, power_reg); 47 ar7_machine_halt(); 48 } 49 50 const char *get_system_type(void) 51 { 52 u16 chip_id = ar7_chip_id(); 53 u16 titan_variant_id = titan_chip_id(); 54 55 switch (chip_id) { 56 case AR7_CHIP_7100: 57 return "TI AR7 (TNETD7100)"; 58 case AR7_CHIP_7200: 59 return "TI AR7 (TNETD7200)"; 60 case AR7_CHIP_7300: 61 return "TI AR7 (TNETD7300)"; 62 case AR7_CHIP_TITAN: 63 switch (titan_variant_id) { 64 case TITAN_CHIP_1050: 65 return "TI AR7 (TNETV1050)"; 66 case TITAN_CHIP_1055: 67 return "TI AR7 (TNETV1055)"; 68 case TITAN_CHIP_1056: 69 return "TI AR7 (TNETV1056)"; 70 case TITAN_CHIP_1060: 71 return "TI AR7 (TNETV1060)"; 72 } 73 default: 74 return "TI AR7 (unknown)"; 75 } 76 } 77 78 static int __init ar7_init_console(void) 79 { 80 return 0; 81 } 82 console_initcall(ar7_init_console); 83 84 /* 85 * Initializes basic routines and structures pointers, memory size (as 86 * given by the bios and saves the command line. 87 */ 88 void __init plat_mem_setup(void) 89 { 90 unsigned long io_base; 91 92 _machine_restart = ar7_machine_restart; 93 _machine_halt = ar7_machine_halt; 94 pm_power_off = ar7_machine_power_off; 95 panic_timeout = 3; 96 97 io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); 98 if (!io_base) 99 panic("Can't remap IO base!\n"); 100 set_io_port_base(io_base); 101 102 prom_meminit(); 103 104 printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n", 105 get_system_type(), ar7_chip_id(), ar7_chip_rev()); 106 } 107