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      1 /* $NetBSD: arm64.h,v 1.2 2018/02/04 17:33:34 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #ifndef _HAVE_ARM64_H
     29 #define _HAVE_ARM64_H
     30 
     31 /*
     32  * AArch64 Linux kernel image header, as specified in
     33  * https://www.kernel.org/doc/Documentation/arm64/booting.txt
     34  */
     35 
     36 /* 64-byte kernel image header */
     37 struct arm64_image_header {
     38 	uint32_t	code0;		/* Executable code */
     39 	uint32_t	code1;		/* Executable code */
     40 	uint64_t	text_offset;	/* Image load offset */
     41 	uint64_t	image_size;	/* Effective image size */
     42 	uint64_t	flags;		/* kernel flags */
     43 	uint64_t	res2;		/* reserved */
     44 	uint64_t	res3;		/* reserved */
     45 	uint64_t	res4;		/* reserved */
     46 	uint32_t	magic;		/* Magic number ("ARM\x64") */
     47 	uint32_t	res5;		/* reserved (used for PE COFF offset) */
     48 };
     49 
     50 /* Kernel flags */
     51 #define	ARM64_FLAGS_ENDIAN_BE		(1 << 0)
     52 #define	ARM64_FLAGS_PAGE_SIZE		(3 << 1)
     53 #define	 ARM64_FLAGS_PAGE_SIZE_UNSPEC		(0 << 1)
     54 #define	 ARM64_FLAGS_PAGE_SIZE_4K		(1 << 1)
     55 #define	 ARM64_FLAGS_PAGE_SIZE_16K		(2 << 1)
     56 #define	 ARM64_FLAGS_PAGE_SIZE_64K		(3 << 1)
     57 #define	ARM64_FLAGS_PHYS_PLACEMENT	(1 << 3)
     58 #define	 ARM64_FLAGS_PHYS_PLACEMENT_DRAM_BASE	(0 << 3)
     59 #define	 ARM64_FLAGS_PHYS_PLACEMENT_ANY		(1 << 3)
     60 
     61 /* Magic */
     62 #define	ARM64_MAGIC	0x644d5241
     63 
     64 /* Executable code. Program relative branch forward 64 bytes. */
     65 #define	ARM64_CODE0	0x14000010
     66 
     67 #endif /* !_HAVE_ARM64_H */
     68