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: releng/10.0/sys/arm/xilinx/zy7_machdep.c 250015 2013-04-28 07:00:36Z wkoszek $
     */
    
    /*
     * 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 "opt_global.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/arm/xilinx/zy7_machdep.c 250015 2013-04-28 07:00:36Z wkoszek $");
    
    #define _ARM32_BUS_DMA_PRIVATE
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    
    #include <vm/vm.h>
    #include <vm/pmap.h>
    
    #include <dev/fdt/fdt_common.h>
    
    #include <machine/bus.h>
    #include <machine/pmap.h>
    #include <machine/frame.h>
    #include <machine/machdep.h>
    
    #include <arm/xilinx/zy7_reg.h>
    
    void (*zynq7_cpu_reset)(void);
    
    vm_offset_t
    initarm_lastaddr(void)
    {
    
            return (ZYNQ7_PSIO_VBASE - ARM_NOCACHE_KVA_SIZE);
    }
    
    void
    initarm_gpio_init(void)
    {
    }
    
    void
    initarm_late_init(void)
    {
    }
    
    #define FDT_DEVMAP_SIZE 3
    static struct pmap_devmap fdt_devmap[FDT_DEVMAP_SIZE];
    
    /*
     * Construct pmap_devmap[] with DT-derived config data.
     */
    int
    platform_devmap_init(void)
    {
            int i = 0;
    
            fdt_devmap[i].pd_va =   ZYNQ7_PSIO_VBASE;
            fdt_devmap[i].pd_pa =   ZYNQ7_PSIO_HWBASE;
            fdt_devmap[i].pd_size = ZYNQ7_PSIO_SIZE;
            fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
            fdt_devmap[i].pd_cache = PTE_DEVICE;
            i++;
    
            fdt_devmap[i].pd_va =   ZYNQ7_PSCTL_VBASE;
            fdt_devmap[i].pd_pa =   ZYNQ7_PSCTL_HWBASE;
            fdt_devmap[i].pd_size = ZYNQ7_PSCTL_SIZE;
            fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
            fdt_devmap[i].pd_cache = PTE_DEVICE;
           i++;
   
           /* end of table */
           fdt_devmap[i].pd_va = 0;
           fdt_devmap[i].pd_pa = 0;
           fdt_devmap[i].pd_size = 0;
           fdt_devmap[i].pd_prot = 0;
           fdt_devmap[i].pd_cache = 0;
   
           pmap_devmap_bootstrap_table = &fdt_devmap[0];
           return (0);
   }
   
   
   struct fdt_fixup_entry fdt_fixup_table[] = {
           { NULL, NULL }
   };
   
   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
   };
   
   
   struct arm32_dma_range *
   bus_dma_get_range(void)
   {
   
           return (NULL);
   }
   
   int
   bus_dma_get_range_nb(void)
   {
   
           return (0);
   }
   
   void
   cpu_reset()
   {
           if (zynq7_cpu_reset != NULL)
                   (*zynq7_cpu_reset)();
   
           printf("cpu_reset: no platform cpu_reset.  hanging.\n");
           for (;;)
                   ;
   }

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