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/*
* 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 <linux/serial_8250.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/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 __init plat_timer_setup(struct irqaction *irq)
{
setup_irq(7, irq);
}
void yosemite_time_init(void)
{
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)
{
#ifdef CONFIG_SERIAL_8250
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");
#endif /* CONFIG_SERIAL_8250 */
}
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
}
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