FreeBSD/Linux Kernel Cross Reference
sys/arm/allwinner/a10_machdep.c

     /*-
      * Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@gmail.com>
      * All rights reserved.
      *
      * This code is derived from software written for Brini by Mark Brinicombe
      *
      * 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.
     *
     * from: FreeBSD: //depot/projects/arm/src/sys/arm/ti/ti_machdep.c
     */
    
    #include "opt_ddb.h"
    #include "opt_platform.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/arm/allwinner/a10_machdep.c 246661 2013-02-11 11:33:56Z gonzo $");
    
    #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 <machine/bus.h>
    #include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
    #include <machine/machdep.h>
    #include <machine/pmap.h>
    
    #include <dev/fdt/fdt_common.h>
    
    #include <arm/allwinner/a10_wdog.h>
    
    /* Start of address space used for bootstrap map */
    #define DEVMAP_BOOTSTRAP_MAP_START      0xE0000000
    
    
    vm_offset_t
    initarm_lastaddr(void)
    {
    
            return (DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE);
    }
    
    void
    initarm_gpio_init(void)
    {
    }
    
    void
    initarm_late_init(void)
    {
    }
    
    #define FDT_DEVMAP_MAX          (1 + 2 + 1 + 1)
    static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
            { 0, 0, 0, 0, 0, }
    };
    
    /*
     * Construct pmap_devmap[] with DT-derived config data.
     */
    int
    platform_devmap_init(void)
    {
            int i = 0;
    
            fdt_devmap[i].pd_va =   0xE1C00000;
            fdt_devmap[i].pd_pa =   0x01C00000;
            fdt_devmap[i].pd_size = 0x00400000;     /* 4 MB */
            fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
            fdt_devmap[i].pd_cache = PTE_DEVICE;
    
            i++;
    
            pmap_devmap_bootstrap_table = &fdt_devmap[0];
    
            return (0);
    }
   
   struct arm32_dma_range *
   bus_dma_get_range(void)
   {
           return (NULL);
   }
   
   int
   bus_dma_get_range_nb(void)
   {
           return (0);
   }
   
   void
   cpu_reset()
   {
           a10wd_watchdog_reset();
           printf("Reset failed!\n");
           while (1);
   }

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