FreeBSD/Linux Kernel Cross Reference
sys/arm/xilinx/zy7_machdep.c

     /*-
      * Copyright (c) 2013 Thomas Skibo
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
     *
     * $FreeBSD$
     */
    
    /*
     * Machine dependent code for Xilinx Zynq-7000 Soc.
     *
     * Reference: Zynq-7000 All Programmable SoC Technical Reference Manual.
     * (v1.4) November 16, 2012.  Xilinx doc UG585.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/devmap.h>
    
    #include <vm/vm.h>
    #include <vm/pmap.h>
    
    #include <dev/fdt/fdt_common.h>
    
    #include <machine/bus.h>
    #include <machine/machdep.h>
    #include <machine/platform.h> 
    
    #include <arm/xilinx/zy7_reg.h>
    
    void (*zynq7_cpu_reset)(void);
    
    vm_offset_t
    platform_lastaddr(void)
    {
    
            return (devmap_lastaddr());
    }
    
    void
    platform_probe_and_attach(void)
    {
    
    }
    
    void
    platform_gpio_init(void)
    {
    }
    
    void
    platform_late_init(void)
    {
    }
    
    /*
     * Set up static device mappings.  Not strictly necessary -- simplebus will
     * dynamically establish mappings as needed -- but doing it this way gets us
     * nice efficient 1MB section mappings.
     */
    int
    platform_devmap_init(void)
    {
    
            devmap_add_entry(ZYNQ7_PSIO_HWBASE, ZYNQ7_PSIO_SIZE);
            devmap_add_entry(ZYNQ7_PSCTL_HWBASE, ZYNQ7_PSCTL_SIZE);
    
            return (0);
    }
    
    
    #ifndef INTRNG
    static int
    fdt_gic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
        int *pol)
   {
   
           if (!fdt_is_compatible(node, "arm,gic"))
                   return (ENXIO);
   
           *interrupt = fdt32_to_cpu(intr[0]);
           *trig = INTR_TRIGGER_CONFORM;
           *pol = INTR_POLARITY_CONFORM;
   
           return (0);
   }
   
   fdt_pic_decode_t fdt_pic_table[] = {
           &fdt_gic_decode_ic,
           NULL
   };
   #endif
   
   void
   cpu_reset(void)
   {
           if (zynq7_cpu_reset != NULL)
                   (*zynq7_cpu_reset)();
   
           printf("cpu_reset: no platform cpu_reset.  hanging.\n");
           for (;;)
                   ;
   }

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