mxc_nb_setup.h

i.mx31 3DS平台Nandboot引导程序源码

/*!
 *
 * File: mxc_nb_setup.h
 *
 */

//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
// Copyright (C) 2003, 2004 Gary Thomas
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
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// in accordance with section (3) of the GNU General Public License.
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// this file might be covered by the GNU General Public License.
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// at http://sources.redhat.com/ecos/ecos-license/
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//####ECOSGPLCOPYRIGHTEND####
//####OTHERCOPYRIGHTBEGIN####
//
//  The structure definitions below are taken from include/asm-arm/setup.h in
//  the Linux kernel, Copyright (C) 1997-1999 Russell King. Their presence
//  here is for the express purpose of communication with the Linux kernel
//  being booted and is considered 'fair use' by the original author and
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//==========================================================================


#ifndef MXC_NB_SETUP_H
#define MXC_NB_SETUP_H

/*!
 * @defgroup NANDboot Bootloader for NAND Flash
 */

/*!
 * @file mxc_nb_setup.h
 * 
 * @brief This file contains the  kernel tags list definitions 
 *
 * @ingroup NANDboot
 */

#include "mxc_nb.h"
#include "mxc_nb_uart.h"

/* Round up a quantity to a longword (32 bit) length */
#define ROUNDUP(n) (((n)+3)&~3)

/* The list ends with an ATAG_NONE node. */
#define ATAG_NONE	0x00000000

struct tag_header {
    U32 size;    
    U32 tag;
};

/* The list must start with an ATAG_CORE node */
#define ATAG_CORE	0x54410001

struct tag_core {
    U32 flags;		
    U32 pagesize;
    U32 rootdev;
};

/* it is allowed to have multiple ATAG_MEM nodes */
#define ATAG_MEM		0x54410002

struct tag_mem32 {
    U32	size;
    U32	start;
};

/* command line: \0 terminated string */
#define ATAG_CMDLINE	0x54410009

struct tag_cmdline {
    char cmdline[1];
};

struct tag {
    struct tag_header hdr;
    union {
        struct tag_core		core;
        struct tag_mem32	mem;
        struct tag_cmdline	cmdline;
    } u;
};

#endif /*MXC_NB_SETUP_H */