1 files changed, 235 insertions, 0 deletions

diff --git a/arch/mips/pmc-sierra/yosemite/setup.c b/arch/mips/pmc-sierra/yosemite/setup.c
new file mode 100644
index 000000000000..7225bbf20ce4
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/setup.c
@@ -0,0 +1,235 @@
+/*
+ *  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;
+
+        /* 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;
+
+        return mktime(year, month, day, hour, min, sec);
+}
+
+int m48t37y_set_time(unsigned long sec)
+{
+        struct rtc_time tm;
+
+        /* convert to a more useful format -- note months count from 0 */
+        to_tm(sec, &tm);
+        tm.tm_mon += 1;
+
+        /* 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;
+
+        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        = ASYNC_BOOT_AUTOCONF | ASYNC_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_get_time = m48t37y_get_time;
+        rtc_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();
+}
+
+static int __init pmc_yosemite_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
+
+        return 0;
+}
+
+early_initcall(pmc_yosemite_setup);