1 // SPDX-License-Identifier: GPL-2.0-only
3 * Carsten Langgaard, carstenl@mips.com
4 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
6 #include <linux/init.h>
7 #include <linux/ioport.h>
9 #include <linux/time.h>
11 #include <asm/reboot.h>
12 #include <asm/mach-ar7/ar7.h>
13 #include <asm/mach-ar7/prom.h>
15 static void ar7_machine_restart(char *command)
17 u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1);
19 writel(1, softres_reg);
22 static void ar7_machine_halt(void)
28 static void ar7_machine_power_off(void)
30 u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
31 u32 power_state = readl(power_reg) | (3 << 30);
33 writel(power_state, power_reg);
37 const char *get_system_type(void)
39 u16 chip_id = ar7_chip_id();
40 u16 titan_variant_id = titan_chip_id();
44 return "TI AR7 (TNETD7100)";
46 return "TI AR7 (TNETD7200)";
48 return "TI AR7 (TNETD7300)";
50 switch (titan_variant_id) {
52 return "TI AR7 (TNETV1050)";
54 return "TI AR7 (TNETV1055)";
56 return "TI AR7 (TNETV1056)";
58 return "TI AR7 (TNETV1060)";
62 return "TI AR7 (unknown)";
66 static int __init ar7_init_console(void)
70 console_initcall(ar7_init_console);
73 * Initializes basic routines and structures pointers, memory size (as
74 * given by the bios and saves the command line.
76 void __init plat_mem_setup(void)
78 unsigned long io_base;
80 _machine_restart = ar7_machine_restart;
81 _machine_halt = ar7_machine_halt;
82 pm_power_off = ar7_machine_power_off;
84 io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
86 panic("Can't remap IO base!");
87 set_io_port_base(io_base);
91 printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
92 get_system_type(), ar7_chip_id(), ar7_chip_rev());