236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
/*
|
|
* 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/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)
|
|
{
|
|
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
|
|
}
|