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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/mips/ar7/setup.c
10818 views
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/*

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 * Carsten Langgaard, [email protected]

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 * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.

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 *

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 *  This program is free software; you can distribute it and/or modify it

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 *  under the terms of the GNU General Public License (Version 2) as

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 *  published by the Free Software Foundation.

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 *

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 *  This program is distributed in the hope it will be useful, but WITHOUT

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 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 *  for more details.

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 *

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 *  You should have received a copy of the GNU General Public License along

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 *  with this program; if not, write to the Free Software Foundation, Inc.,

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 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.

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 */

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#include <linux/init.h>

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#include <linux/ioport.h>

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#include <linux/pm.h>

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#include <linux/time.h>

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#include <asm/reboot.h>

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#include <asm/mach-ar7/ar7.h>

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#include <asm/mach-ar7/prom.h>

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#include <asm/mach-ar7/gpio.h>

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static void ar7_machine_restart(char *command)

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{

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	u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1);

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	writel(1, softres_reg);

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}

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static void ar7_machine_halt(void)

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{

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	while (1)

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		;

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}

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static void ar7_machine_power_off(void)

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{

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	u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);

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	u32 power_state = readl(power_reg) | (3 << 30);

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	writel(power_state, power_reg);

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	ar7_machine_halt();

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}

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const char *get_system_type(void)

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{

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	u16 chip_id = ar7_chip_id();

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	u16 titan_variant_id = titan_chip_id();

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	switch (chip_id) {

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	case AR7_CHIP_7100:

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		return "TI AR7 (TNETD7100)";

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	case AR7_CHIP_7200:

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		return "TI AR7 (TNETD7200)";

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	case AR7_CHIP_7300:

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		return "TI AR7 (TNETD7300)";

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	case AR7_CHIP_TITAN:

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		switch (titan_variant_id) {

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		case TITAN_CHIP_1050:

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			return "TI AR7 (TNETV1050)";

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		case TITAN_CHIP_1055:

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			return "TI AR7 (TNETV1055)";

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		case TITAN_CHIP_1056:

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			return "TI AR7 (TNETV1056)";

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		case TITAN_CHIP_1060:

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			return "TI AR7 (TNETV1060)";

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		}

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	default:

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		return "TI AR7 (unknown)";

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	}

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}

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static int __init ar7_init_console(void)

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{

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	return 0;

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}

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console_initcall(ar7_init_console);

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/*

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 * Initializes basic routines and structures pointers, memory size (as

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 * given by the bios and saves the command line.

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 */

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void __init plat_mem_setup(void)

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{

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	unsigned long io_base;

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	_machine_restart = ar7_machine_restart;

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	_machine_halt = ar7_machine_halt;

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	pm_power_off = ar7_machine_power_off;

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	panic_timeout = 3;

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	io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);

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	if (!io_base)

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		panic("Can't remap IO base!\n");

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	set_io_port_base(io_base);

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	prom_meminit();

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	printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",

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			get_system_type(), ar7_chip_id(), ar7_chip_rev());

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}

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