FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/machdep.h

     /*-
      * Copyright (c) 2013 Andrew Turner <andrew@freebsd.org>
      * 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_MACHDEP_H_
    #define _MACHINE_MACHDEP_H_
    
    #ifdef _KERNEL
    
    struct arm64_bootparams {
            vm_offset_t     modulep;
            uint64_t        kern_delta;
            vm_offset_t     kern_stack;
            vm_paddr_t      kern_ttbr0;
            int             boot_el;        /* EL the kernel booted from */
            int             pad;
    };
    
    enum arm64_bus {
            ARM64_BUS_NONE,
            ARM64_BUS_FDT,
            ARM64_BUS_ACPI,
    };
    
    extern enum arm64_bus arm64_bus_method;
    
    void dbg_init(void);
    bool has_hyp(void);
    void initarm(struct arm64_bootparams *);
    vm_offset_t parse_boot_param(struct arm64_bootparams *abp);
    #ifdef FDT
    void parse_fdt_bootargs(void);
    #endif
    int memory_mapping_mode(vm_paddr_t pa);
    extern void (*pagezero)(void *);
    
    #ifdef SOCDEV_PA
    /*
     * The virtual address SOCDEV_PA is mapped at.
     * Only valid while the early pagetables are valid.
     */
    extern uintptr_t socdev_va;
    #endif
    
    #endif /* _KERNEL */
    
    #endif /* _MACHINE_MACHDEP_H_ */

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