/* * BRIEF MODULE DESCRIPTION * setup.c - board dependent boot routines * * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology * Author: Fuxin Zhang, zhangfx@lemote.com * *  This program is free software; you can redistribute  it and/or modify it *  under  the terms of  the GNU General  Public License as published by the *  Free Software Foundation;  either version 2 of the  License, or (at your *  option) any later version. * *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT, *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *  You should have received a copy of the  GNU General Public License along *  with this program; if not, write  to the Free Software Foundation, Inc., *  675 Mass Ave, Cambridge, MA 02139, USA. * */#include <linux/bootmem.h>#include <linux/init.h>#include <linux/irq.h>#include <asm/bootinfo.h>#include <asm/mc146818-time.h>#include <asm/time.h>#include <asm/wbflush.h>#ifdef CONFIG_VT#include <linux/console.h>#include <linux/screen_info.h>#endifextern void mips_reboot_setup(void);#ifdef CONFIG_64BIT#define PTR_PAD(p) ((0xffffffff00000000)|((unsigned long long)(p)))#else#define PTR_PAD(p) (p)#endifunsigned long cpu_clock_freq;unsigned long bus_clock;unsigned int memsize;unsigned int highmemsize = 0;void __init plat_time_init(void){	/* setup mips r4k timer */	mips_hpt_frequency = cpu_clock_freq / 2;}unsigned long read_persistent_clock(void){	return mc146818_get_cmos_time();}void (*__wbflush)(void);EXPORT_SYMBOL(__wbflush);static void wbflush_loongson2e(void){	asm(".set\tpush\n\t"	    ".set\tnoreorder\n\t"	    ".set mips3\n\t"	    "sync\n\t"	    "nop\n\t"	    ".set\tpop\n\t"	    ".set mips0\n\t");}void __init plat_mem_setup(void){	set_io_port_base(PTR_PAD(0xbfd00000));	mips_reboot_setup();	__wbflush = wbflush_loongson2e;	add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);#ifdef CONFIG_64BIT	if (highmemsize > 0) {		add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);	}#endif#ifdef CONFIG_VT#if defined(CONFIG_VGA_CONSOLE)	conswitchp = &vga_con;	screen_info = (struct screen_info) {		0, 25,		/* orig-x, orig-y */		    0,		/* unused */		    0,		/* orig-video-page */		    0,		/* orig-video-mode */		    80,		/* orig-video-cols */		    0, 0, 0,	/* ega_ax, ega_bx, ega_cx */		    25,		/* orig-video-lines */		    VIDEO_TYPE_VGAC,	/* orig-video-isVGA */		    16		/* orig-video-points */	};#elif defined(CONFIG_DUMMY_CONSOLE)	conswitchp = &dummy_con;#endif#endif}