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      1 /*	$NetBSD: cyclone_boot.h,v 1.2 2021/08/22 07:00:41 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997,1998 Mark Brinicombe.
      5  * Copyright (c) 1997,1998 Causality Limited.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Mark Brinicombe.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * Define the boot structure that is passed to the kernel
     38  * from the cyclone firmware.
     39  *
     40  * The bootloader reserves a page for boot argument info.
     41  * This page will contain the ebsaboot structure and the
     42  * kernel argument string.
     43  */
     44 
     45 struct ebsaboot {
     46 	uint32_t	bt_magic;	/* boot info magic number */
     47 	uint32_t	bt_vargp;	/* virtual addr of arg page */
     48 	uint32_t	bt_pargp;	/* physical addr of arg page */
     49 	const char *	bt_args;	/* kernel args string pointer */
     50 	pd_entry_t *	bt_l1;		/* active L1 page table */
     51 	uint32_t	bt_memstart;	/* start of physical memory */
     52 	uint32_t	bt_memend;	/* end of physical memory */
     53 	uint32_t	bt_memavail;	/* start of avail phys memory */
     54 	uint32_t	bt_fclk;	/* fclk frequency */
     55 	uint32_t	bt_pciclk;	/* PCI bus frequency */
     56 	uint32_t	bt_vers;	/* structure version (CATS) */
     57 	uint32_t	bt_features;	/* feature mask (CATS) */
     58 };
     59 
     60 #define BT_MAGIC_NUMBER_EBSA	0x45425341
     61 #define BT_MAGIC_NUMBER_CATS	0x43415453
     62 
     63 #define BT_BOOT_VERSION_OLD	0
     64 #define BT_BOOT_VERSION_NEW	1
     65 
     66 /* End of cyclone_boot.h */
     67