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 + 30 AR7_RESET_SOFTWARE, 1); 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 writel(power_state, power_reg); 45 ar7_machine_halt(); 46 } 47 48 const char *get_system_type(void) 49 { 50 u16 chip_id = ar7_chip_id(); 51 switch (chip_id) { 52 case AR7_CHIP_7300: 53 return "TI AR7 (TNETD7300)"; 54 case AR7_CHIP_7100: 55 return "TI AR7 (TNETD7100)"; 56 case AR7_CHIP_7200: 57 return "TI AR7 (TNETD7200)"; 58 default: 59 return "TI AR7 (Unknown)"; 60 } 61 } 62 63 static int __init ar7_init_console(void) 64 { 65 return 0; 66 } 67 console_initcall(ar7_init_console); 68 69 /* 70 * Initializes basic routines and structures pointers, memory size (as 71 * given by the bios and saves the command line. 72 */ 73 74 void __init plat_mem_setup(void) 75 { 76 unsigned long io_base; 77 78 _machine_restart = ar7_machine_restart; 79 _machine_halt = ar7_machine_halt; 80 pm_power_off = ar7_machine_power_off; 81 panic_timeout = 3; 82 83 io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); 84 if (!io_base) 85 panic("Can't remap IO base!\n"); 86 set_io_port_base(io_base); 87 88 prom_meminit(); 89 90 printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n", 91 get_system_type(), 92 ar7_chip_id(), ar7_chip_rev()); 93 } 94