#ifndef	PARAMS_H
#define	PARAMS_H

typedef	unsigned long u32;
typedef	unsigned short u16;
typedef	unsigned char u8;
typedef	unsigned long ulong;

#define LINUX_PAGE_SHIFT	12
#define LINUX_PAGE_SIZE		(1<<LINUX_PAGE_SHIFT)
/*
 * Usage:
 *  - do not go blindly adding fields, add them at the end
 *  - when adding fields, don't rely on the address until
 *    a patch from me has been released
 *  - unused fields should be zero (for future expansion)
 *  - this structure is relatively short-lived - only
 *    guaranteed to contain useful data in setup_arch()
 */
#define COMMAND_LINE_SIZE 1024

/* This is the old deprecated way to pass parameters to the kernel */
struct param_struct
{
	union
	{
		struct
		{
			unsigned long page_size;		/*  0 */
			unsigned long nr_pages;		/*  4 */
			unsigned long ramdisk_size;		/*  8 */
			unsigned long flags;		/* 12 */
#define FLAG_READONLY	1
#define FLAG_RDLOAD	4
#define FLAG_RDPROMPT	8
			unsigned long rootdev;		/* 16 */
			unsigned long video_num_cols;	/* 20 */
			unsigned long video_num_rows;	/* 24 */
			unsigned long video_x;		/* 28 */
			unsigned long video_y;		/* 32 */
			unsigned long memc_control_reg;	/* 36 */
			unsigned char sounddefault;		/* 40 */
			unsigned char adfsdrives;		/* 41 */
			unsigned char bytes_per_char_h;	/* 42 */
			unsigned char bytes_per_char_v;	/* 43 */
			unsigned long pages_in_bank[4];	/* 44 */
			unsigned long pages_in_vram;	/* 60 */
			unsigned long initrd_start;		/* 64 */
			unsigned long initrd_size;		/* 68 */
			unsigned long rd_start;		/* 72 */
			unsigned long system_rev;		/* 76 */
			unsigned long system_serial_low;	/* 80 */
			unsigned long system_serial_high;	/* 84 */
			unsigned long mem_fclk_21285;   	/* 88 */
		} s;
		char unused[256];
	} u1;
	union
	{
		char paths[8][128];
		struct
		{
			unsigned long magic;
			char n[1024 - sizeof( unsigned long )];
		} s;
	} u2;
	char commandline[COMMAND_LINE_SIZE];
};



/*
 * The new way of passing information: a list of tagged entries
 */

/* 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;		/* bit 0 = read-only */
	u32 pagesize;
	u32 rootdev;
};

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

struct tag_mem32
{
	u32 size;
	u32 start;	/* physical start address */
};

/* VGA text type displays */
#define ATAG_VIDEOTEXT	0x54410003

struct tag_videotext
{
	u8 x;
	u8 y;
	u16 video_page;
	u8 video_mode;
	u8 video_cols;
	u16 video_ega_bx;
	u8 video_lines;
	u8 video_isvga;
	u16 video_points;
};

/* describes how the ramdisk will be used in kernel */
#define ATAG_RAMDISK	0x54410004

struct tag_ramdisk
{
	u32 flags;	/* bit 0 = load, bit 1 = prompt */
	u32 size;	/* decompressed ramdisk size in _kilo_ bytes */
	u32 start;	/* starting block of floppy-based RAM disk image */
};

/* describes where the compressed ramdisk image lives (virtual address) */
/*
 * this one accidentally used virtual addresses - as such,
 * its depreciated.
 */
#define ATAG_INITRD	0x54410005

/* describes where the compressed ramdisk image lives (physical address) */
#define ATAG_INITRD2	0x54420005

struct tag_initrd
{
	u32 start;	/* physical start address */
	u32 size;	/* size of compressed ramdisk image in bytes */
};

/* board serial number. "64 bits should be enough for everybody" */
#define ATAG_SERIAL	0x54410006

struct tag_serialnr
{
	u32 low;
	u32 high;
};

/* board revision */
#define ATAG_REVISION	0x54410007

struct tag_revision
{
	u32 rev;
};

/* initial values for vesafb-type framebuffers. see struct screen_info
 * in include/linux/tty.h
 */
#define ATAG_VIDEOLFB	0x54410008

struct tag_videolfb
{
	u16 lfb_width;
	u16 lfb_height;
	u16 lfb_depth;
	u16 lfb_linelength;
	u32 lfb_base;
	u32 lfb_size;
	u8 red_size;
	u8 red_pos;
	u8 green_size;
	u8 green_pos;
	u8 blue_size;
	u8 blue_pos;
	u8 rsvd_size;
	u8 rsvd_pos;
};

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

struct tag_cmdline
{
	char cmdline[1];	/* this is the minimum size */
};

/* acorn RiscPC specific information */
#define ATAG_ACORN	0x41000101

struct tag_acorn
{
	u32 memc_control_reg;
	u32 vram_pages;
	u8 sounddefault;
	u8 adfsdrives;
};

/* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
#define ATAG_MEMCLK	0x41000402

struct tag_memclk
{
	u32 fmemclk;
};

struct tag
{
	struct tag_header hdr;
	union
	{
		struct tag_core core;
		struct tag_mem32 mem;
		struct tag_videotext videotext;
		struct tag_ramdisk ramdisk;
		struct tag_initrd initrd;
		struct tag_serialnr serialnr;
		struct tag_revision revision;
		struct tag_videolfb videolfb;
		struct tag_cmdline cmdline;

		/*
				 * Acorn specific
				 */
		struct tag_acorn acorn;

		/*
				 * DC21285 specific
				 */
		struct tag_memclk memclk;
	} u;
};

#define tag_next(t)	((struct tag *)((u32 *)(t) + (t)->hdr.size))
#define tag_size(type)	((sizeof(struct tag_header) + sizeof(struct type)) >> 2)

#define for_each_tag(t,base)		\
	for (t = base; t->hdr.size; t = tag_next(t))

#define	BOOT_PORG_ADDR		0x21f00000
#define	LINUX_MACHINE_ID	251
#define	LINUX_KERNEL_ADDR	0x20008000
#define	LINUX_ZIMAGE_ADDR	0x20200000
#define	LINUX_PARAMS_ADDR	(void *)0x20000100
#define	INITRD_START		0x20800000
#define	INITRD_SIZE			0x400000		//4M

#endif