arch/mips/pmc-sierra/yosemite/setup.c - linux - Git at Google

 /*
  *  Copyright (C) 2003 PMC-Sierra Inc.
  *  Author: Manish Lachwani (lachwani@pmc-sierra.com)
  *
  * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
  *
  *  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/bcd.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/mm.h>
 #include <linux/bootmem.h>
 #include <linux/swap.h>
 #include <linux/ioport.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/timex.h>
 #include <linux/termios.h>
 #include <linux/tty.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>

 #include <asm/time.h>
 #include <asm/bootinfo.h>
 #include <asm/page.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
 #include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/serial.h>
 #include <asm/titan_dep.h>
 #include <asm/m48t37.h>

 #include "setup.h"

 unsigned char titan_ge_mac_addr_base[6] = {
 	// 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00
 	0x00, 0xe0, 0x04, 0x00, 0x00, 0x21
 };

 unsigned long cpu_clock;
 unsigned long yosemite_base;

 static struct m48t37_rtc *m48t37_base;

 void __init bus_error_init(void)
 {
 	/* Do nothing */
 }


 unsigned long m48t37y_get_time(void)
 {
 	unsigned int year, month, day, hour, min, sec;
 	unsigned long flags;

 	spin_lock_irqsave(&rtc_lock, flags);
 	/* Stop the update to the time */
 	m48t37_base->control = 0x40;

 	year = BCD2BIN(m48t37_base->year);
 	year += BCD2BIN(m48t37_base->century) * 100;

 	month = BCD2BIN(m48t37_base->month);
 	day = BCD2BIN(m48t37_base->date);
 	hour = BCD2BIN(m48t37_base->hour);
 	min = BCD2BIN(m48t37_base->min);
 	sec = BCD2BIN(m48t37_base->sec);

 	/* Start the update to the time again */
 	m48t37_base->control = 0x00;
 	spin_unlock_irqrestore(&rtc_lock, flags);

 	return mktime(year, month, day, hour, min, sec);
 }

 int m48t37y_set_time(unsigned long sec)
 {
 	struct rtc_time tm;
 	unsigned long flags;

 	/* convert to a more useful format -- note months count from 0 */
 	to_tm(sec, &tm);
 	tm.tm_mon += 1;

 	spin_lock_irqsave(&rtc_lock, flags);
 	/* enable writing */
 	m48t37_base->control = 0x80;

 	/* year */
 	m48t37_base->year = BIN2BCD(tm.tm_year % 100);
 	m48t37_base->century = BIN2BCD(tm.tm_year / 100);

 	/* month */
 	m48t37_base->month = BIN2BCD(tm.tm_mon);

 	/* day */
 	m48t37_base->date = BIN2BCD(tm.tm_mday);

 	/* hour/min/sec */
 	m48t37_base->hour = BIN2BCD(tm.tm_hour);
 	m48t37_base->min = BIN2BCD(tm.tm_min);
 	m48t37_base->sec = BIN2BCD(tm.tm_sec);

 	/* day of week -- not really used, but let's keep it up-to-date */
 	m48t37_base->day = BIN2BCD(tm.tm_wday + 1);

 	/* disable writing */
 	m48t37_base->control = 0x00;
 	spin_unlock_irqrestore(&rtc_lock, flags);

 	return 0;
 }

 void yosemite_timer_setup(struct irqaction *irq)
 {
 	setup_irq(7, irq);
 }

 void yosemite_time_init(void)
 {
 	board_timer_setup = yosemite_timer_setup;
 	mips_hpt_frequency = cpu_clock / 2;
 mips_hpt_frequency = 33000000 * 3 * 5;
 }

 /* No other usable initialization hook than this ...  */
 extern void (*late_time_init)(void);

 unsigned long ocd_base;

 EXPORT_SYMBOL(ocd_base);

 /*
  * Common setup before any secondaries are started
  */

 #define TITAN_UART_CLK		3686400
 #define TITAN_SERIAL_BASE_BAUD	(TITAN_UART_CLK / 16)
 #define TITAN_SERIAL_IRQ	4
 #define TITAN_SERIAL_BASE	0xfd000008UL

 static void __init py_map_ocd(void)
 {
 	ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE);
 	if (!ocd_base)
 		panic("Mapping OCD failed - game over.  Your score is 0.");

 	/* Kludge for PMON bug ... */
 	OCD_WRITE(0x0710, 0x0ffff029);
 }

 static void __init py_uart_setup(void)
 {
 	struct uart_port up;

 	/*
 	 * Register to interrupt zero because we share the interrupt with
 	 * the serial driver which we don't properly support yet.
 	 */
 	memset(&up, 0, sizeof(up));
 	up.membase      = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8);
 	up.irq          = TITAN_SERIAL_IRQ;
 	up.uartclk      = TITAN_UART_CLK;
 	up.regshift     = 0;
 	up.iotype       = UPIO_MEM;
 	up.flags        = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
 	up.line         = 0;

 	if (early_serial_setup(&up))
 		printk(KERN_ERR "Early serial init of port 0 failed\n");
 }

 static void __init py_rtc_setup(void)
 {
 	m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
 	if (!m48t37_base)
 		printk(KERN_ERR "Mapping the RTC failed\n");

 	rtc_mips_get_time = m48t37y_get_time;
 	rtc_mips_set_time = m48t37y_set_time;

 	write_seqlock(&xtime_lock);
 	xtime.tv_sec = m48t37y_get_time();
 	xtime.tv_nsec = 0;

 	set_normalized_timespec(&wall_to_monotonic,
 	                        -xtime.tv_sec, -xtime.tv_nsec);
 	write_sequnlock(&xtime_lock);
 }

 /* Not only time init but that's what the hook it's called through is named */
 static void __init py_late_time_init(void)
 {
 	py_map_ocd();
 	py_uart_setup();
 	py_rtc_setup();
 }

 void __init plat_mem_setup(void)
 {
 	board_time_init = yosemite_time_init;
 	late_time_init = py_late_time_init;

 	/* Add memory regions */
 	add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);

 #if 0 /* XXX Crash ...  */
 	OCD_WRITE(RM9000x2_OCD_HTSC,
 	          OCD_READ(RM9000x2_OCD_HTSC) | HYPERTRANSPORT_ENABLE);

 	/* Set the BAR. Shifted mode */
 	OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR);
 	OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0);
 #endif
 }
	/*
	* Copyright (C) 2003 PMC-Sierra Inc.
	* Author: Manish Lachwani (lachwani@pmc-sierra.com)
	*
	* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
	*
	* 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/bcd.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/types.h>
	#include <linux/mm.h>
	#include <linux/bootmem.h>
	#include <linux/swap.h>
	#include <linux/ioport.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/timex.h>
	#include <linux/termios.h>
	#include <linux/tty.h>
	#include <linux/serial.h>
	#include <linux/serial_core.h>

	#include <asm/time.h>
	#include <asm/bootinfo.h>
	#include <asm/page.h>
	#include <asm/io.h>
	#include <asm/irq.h>
	#include <asm/processor.h>
	#include <asm/ptrace.h>
	#include <asm/reboot.h>
	#include <asm/serial.h>
	#include <asm/titan_dep.h>
	#include <asm/m48t37.h>

	#include "setup.h"

	unsigned char titan_ge_mac_addr_base[6] = {
	// 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00
	0x00, 0xe0, 0x04, 0x00, 0x00, 0x21
	};

	unsigned long cpu_clock;
	unsigned long yosemite_base;

	static struct m48t37_rtc *m48t37_base;

	void __init bus_error_init(void)
	{
	/* Do nothing */
	}


	unsigned long m48t37y_get_time(void)
	{
	unsigned int year, month, day, hour, min, sec;
	unsigned long flags;

	spin_lock_irqsave(&rtc_lock, flags);
	/* Stop the update to the time */
	m48t37_base->control = 0x40;

	year = BCD2BIN(m48t37_base->year);
	year += BCD2BIN(m48t37_base->century) * 100;

	month = BCD2BIN(m48t37_base->month);
	day = BCD2BIN(m48t37_base->date);
	hour = BCD2BIN(m48t37_base->hour);
	min = BCD2BIN(m48t37_base->min);
	sec = BCD2BIN(m48t37_base->sec);

	/* Start the update to the time again */
	m48t37_base->control = 0x00;
	spin_unlock_irqrestore(&rtc_lock, flags);

	return mktime(year, month, day, hour, min, sec);
	}

	int m48t37y_set_time(unsigned long sec)
	{
	struct rtc_time tm;
	unsigned long flags;

	/* convert to a more useful format -- note months count from 0 */
	to_tm(sec, &tm);
	tm.tm_mon += 1;

	spin_lock_irqsave(&rtc_lock, flags);
	/* enable writing */
	m48t37_base->control = 0x80;

	/* year */
	m48t37_base->year = BIN2BCD(tm.tm_year % 100);
	m48t37_base->century = BIN2BCD(tm.tm_year / 100);

	/* month */
	m48t37_base->month = BIN2BCD(tm.tm_mon);

	/* day */
	m48t37_base->date = BIN2BCD(tm.tm_mday);

	/* hour/min/sec */
	m48t37_base->hour = BIN2BCD(tm.tm_hour);
	m48t37_base->min = BIN2BCD(tm.tm_min);
	m48t37_base->sec = BIN2BCD(tm.tm_sec);

	/* day of week -- not really used, but let's keep it up-to-date */
	m48t37_base->day = BIN2BCD(tm.tm_wday + 1);

	/* disable writing */
	m48t37_base->control = 0x00;
	spin_unlock_irqrestore(&rtc_lock, flags);

	return 0;
	}

	void yosemite_timer_setup(struct irqaction *irq)
	{
	setup_irq(7, irq);
	}

	void yosemite_time_init(void)
	{
	board_timer_setup = yosemite_timer_setup;
	mips_hpt_frequency = cpu_clock / 2;
	mips_hpt_frequency = 33000000 * 3 * 5;
	}

	/* No other usable initialization hook than this ... */
	extern void (*late_time_init)(void);

	unsigned long ocd_base;

	EXPORT_SYMBOL(ocd_base);

	/*
	* Common setup before any secondaries are started
	*/

	#define TITAN_UART_CLK 3686400
	#define TITAN_SERIAL_BASE_BAUD (TITAN_UART_CLK / 16)
	#define TITAN_SERIAL_IRQ 4
	#define TITAN_SERIAL_BASE 0xfd000008UL

	static void __init py_map_ocd(void)
	{
	ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE);
	if (!ocd_base)
	panic("Mapping OCD failed - game over. Your score is 0.");

	/* Kludge for PMON bug ... */
	OCD_WRITE(0x0710, 0x0ffff029);
	}

	static void __init py_uart_setup(void)
	{
	struct uart_port up;

	/*
	* Register to interrupt zero because we share the interrupt with
	* the serial driver which we don't properly support yet.
	*/
	memset(&up, 0, sizeof(up));
	up.membase = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8);
	up.irq = TITAN_SERIAL_IRQ;
	up.uartclk = TITAN_UART_CLK;
	up.regshift = 0;
	up.iotype = UPIO_MEM;
	up.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST;
	up.line = 0;

	if (early_serial_setup(&up))
	printk(KERN_ERR "Early serial init of port 0 failed\n");
	}

	static void __init py_rtc_setup(void)
	{
	m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
	if (!m48t37_base)
	printk(KERN_ERR "Mapping the RTC failed\n");

	rtc_mips_get_time = m48t37y_get_time;
	rtc_mips_set_time = m48t37y_set_time;

	write_seqlock(&xtime_lock);
	xtime.tv_sec = m48t37y_get_time();
	xtime.tv_nsec = 0;

	set_normalized_timespec(&wall_to_monotonic,
	-xtime.tv_sec, -xtime.tv_nsec);
	write_sequnlock(&xtime_lock);
	}

	/* Not only time init but that's what the hook it's called through is named */
	static void __init py_late_time_init(void)
	{
	py_map_ocd();
	py_uart_setup();
	py_rtc_setup();
	}

	void __init plat_mem_setup(void)
	{
	board_time_init = yosemite_time_init;
	late_time_init = py_late_time_init;

	/* Add memory regions */
	add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);

	#if 0 /* XXX Crash ... */
	OCD_WRITE(RM9000x2_OCD_HTSC,
	OCD_READ(RM9000x2_OCD_HTSC) \| HYPERTRANSPORT_ENABLE);

	/* Set the BAR. Shifted mode */
	OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR);
	OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0);
	#endif
	}