[net-next-2.6.git] / arch / arm / include / asm / setup.h

/*
 *  linux/include/asm/setup.h
 *
 *  Copyright (C) 1997-1999 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Structure passed to kernel to tell it about the
 *  hardware it's running on.  See Documentation/arm/Setup
 *  for more info.
 */
#ifndef __ASMARM_SETUP_H
#define __ASMARM_SETUP_H

#include <linux/types.h>

#define COMMAND_LINE_SIZE 1024

/* 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,
 * it's deprecated.
 */
#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;
};

struct tagtable {
	__u32 tag;
	int (*parse)(const struct tag *);
};

#define tag_member_present(tag,member)				\
	((unsigned long)(&((struct tag *)0L)->member + 1)	\
		<= (tag)->hdr.size * 4)

#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))

#ifdef __KERNEL__

#define __tag __used __attribute__((__section__(".taglist.init")))
#define __tagtable(tag, fn) \
static struct tagtable __tagtable_##fn __tag = { tag, fn }

/*
 * Memory map description
 */
#ifdef CONFIG_ARCH_LH7A40X
# define NR_BANKS 16
#else
# define NR_BANKS 8
#endif

struct membank {
	unsigned long start;
	unsigned long size;
	unsigned short node;
	unsigned short highmem;
};

struct meminfo {
	int nr_banks;
	struct membank bank[NR_BANKS];
};

extern struct meminfo meminfo;

#define for_each_nodebank(iter,mi,no)			\
	for (iter = 0; iter < (mi)->nr_banks; iter++)	\
		if ((mi)->bank[iter].node == no)

#define bank_pfn_start(bank)	__phys_to_pfn((bank)->start)
#define bank_pfn_end(bank)	__phys_to_pfn((bank)->start + (bank)->size)
#define bank_pfn_size(bank)	((bank)->size >> PAGE_SHIFT)
#define bank_phys_start(bank)	(bank)->start
#define bank_phys_end(bank)	((bank)->start + (bank)->size)
#define bank_phys_size(bank)	(bank)->size

#endif  /*  __KERNEL__  */

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm/setup.h
	3	*
	4	* Copyright (C) 1997-1999 Russell King
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* Structure passed to kernel to tell it about the
	11	* hardware it's running on. See Documentation/arm/Setup
	12	* for more info.
	13	*/
	14	#ifndef __ASMARM_SETUP_H
	15	#define __ASMARM_SETUP_H
	16
4af3bf6b	17	#include <linux/types.h>
7d1362c0	18
1da177e4 LT	19	#define COMMAND_LINE_SIZE 1024
	20
	21	/* The list ends with an ATAG_NONE node. */
	22	#define ATAG_NONE 0x00000000
	23
	24	struct tag_header {
7d1362c0 AB	25	__u32 size;
7d1362c0 AB	26	__u32 tag;
1da177e4 LT	27	};
	28
	29	/* The list must start with an ATAG_CORE node */
	30	#define ATAG_CORE 0x54410001
	31
	32	struct tag_core {
7d1362c0 AB	33	__u32 flags; /* bit 0 = read-only */
	34	__u32 pagesize;
	35	__u32 rootdev;
1da177e4 LT	36	};
	37
	38	/* it is allowed to have multiple ATAG_MEM nodes */
	39	#define ATAG_MEM 0x54410002
	40
	41	struct tag_mem32 {
7d1362c0 AB	42	__u32 size;
7d1362c0 AB	43	__u32 start; /* physical start address */
1da177e4 LT	44	};
	45
	46	/* VGA text type displays */
	47	#define ATAG_VIDEOTEXT 0x54410003
	48
	49	struct tag_videotext {
7d1362c0 AB	50	__u8 x;
	51	__u8 y;
	52	__u16 video_page;
	53	__u8 video_mode;
	54	__u8 video_cols;
	55	__u16 video_ega_bx;
	56	__u8 video_lines;
	57	__u8 video_isvga;
	58	__u16 video_points;
1da177e4 LT	59	};
	60
	61	/* describes how the ramdisk will be used in kernel */
	62	#define ATAG_RAMDISK 0x54410004
	63
	64	struct tag_ramdisk {
7d1362c0 AB	65	__u32 flags; /* bit 0 = load, bit 1 = prompt */
	66	__u32 size; /* decompressed ramdisk size in _kilo_ bytes */
	67	__u32 start; /* starting block of floppy-based RAM disk image */
1da177e4 LT	68	};
	69
	70	/* describes where the compressed ramdisk image lives (virtual address) */
	71	/*
	72	* this one accidentally used virtual addresses - as such,
	73	* it's deprecated.
	74	*/
	75	#define ATAG_INITRD 0x54410005
	76
	77	/* describes where the compressed ramdisk image lives (physical address) */
	78	#define ATAG_INITRD2 0x54420005
	79
	80	struct tag_initrd {
7d1362c0 AB	81	__u32 start; /* physical start address */
7d1362c0 AB	82	__u32 size; /* size of compressed ramdisk image in bytes */
1da177e4 LT	83	};
	84
	85	/* board serial number. "64 bits should be enough for everybody" */
	86	#define ATAG_SERIAL 0x54410006
	87
	88	struct tag_serialnr {
7d1362c0 AB	89	__u32 low;
7d1362c0 AB	90	__u32 high;
1da177e4 LT	91	};
	92
	93	/* board revision */
	94	#define ATAG_REVISION 0x54410007
	95
	96	struct tag_revision {
7d1362c0	97	__u32 rev;
1da177e4 LT	98	};
	99
	100	/* initial values for vesafb-type framebuffers. see struct screen_info
	101	* in include/linux/tty.h
	102	*/
	103	#define ATAG_VIDEOLFB 0x54410008
	104
	105	struct tag_videolfb {
7d1362c0 AB	106	__u16 lfb_width;
	107	__u16 lfb_height;
	108	__u16 lfb_depth;
	109	__u16 lfb_linelength;
	110	__u32 lfb_base;
	111	__u32 lfb_size;
	112	__u8 red_size;
	113	__u8 red_pos;
	114	__u8 green_size;
	115	__u8 green_pos;
	116	__u8 blue_size;
	117	__u8 blue_pos;
	118	__u8 rsvd_size;
	119	__u8 rsvd_pos;
1da177e4 LT	120	};
	121
	122	/* command line: \0 terminated string */
	123	#define ATAG_CMDLINE 0x54410009
	124
	125	struct tag_cmdline {
	126	char cmdline[1]; /* this is the minimum size */
	127	};
	128
	129	/* acorn RiscPC specific information */
	130	#define ATAG_ACORN 0x41000101
	131
	132	struct tag_acorn {
7d1362c0 AB	133	__u32 memc_control_reg;
	134	__u32 vram_pages;
	135	__u8 sounddefault;
	136	__u8 adfsdrives;
1da177e4 LT	137	};
	138
	139	/* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
	140	#define ATAG_MEMCLK 0x41000402
	141
	142	struct tag_memclk {
7d1362c0	143	__u32 fmemclk;
1da177e4 LT	144	};
	145
	146	struct tag {
	147	struct tag_header hdr;
	148	union {
	149	struct tag_core core;
	150	struct tag_mem32 mem;
	151	struct tag_videotext videotext;
	152	struct tag_ramdisk ramdisk;
	153	struct tag_initrd initrd;
	154	struct tag_serialnr serialnr;
	155	struct tag_revision revision;
	156	struct tag_videolfb videolfb;
	157	struct tag_cmdline cmdline;
	158
	159	/*
	160	* Acorn specific
	161	*/
	162	struct tag_acorn acorn;
	163
	164	/*
	165	* DC21285 specific
	166	*/
	167	struct tag_memclk memclk;
	168	} u;
	169	};
	170
	171	struct tagtable {
7d1362c0	172	__u32 tag;
1da177e4 LT	173	int (parse)(const struct tag );
	174	};
	175
1da177e4 LT	176	#define tag_member_present(tag,member) \
	177	((unsigned long)(&((struct tag *)0L)->member + 1) \
	178	<= (tag)->hdr.size * 4)
	179
7d1362c0	180	#define tag_next(t) ((struct tag )((__u32 )(t) + (t)->hdr.size))
1da177e4 LT	181	#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
	182
	183	#define for_each_tag(t,base) \
	184	for (t = base; t->hdr.size; t = tag_next(t))
	185
7d1362c0 AB	186	#ifdef __KERNEL__
7d1362c0 AB	187
b91d8a12	188	#define __tag __used __attribute__((__section__(".taglist.init")))
7d1362c0 AB	189	#define __tagtable(tag, fn) \
	190	static struct tagtable __tagtable_##fn __tag = { tag, fn }
	191
1da177e4 LT	192	/*
	193	* Memory map description
	194	*/
	195	#ifdef CONFIG_ARCH_LH7A40X
	196	# define NR_BANKS 16
	197	#else
	198	# define NR_BANKS 8
	199	#endif
	200
456335e2 RK	201	struct membank {
	202	unsigned long start;
	203	unsigned long size;
dde5828f RK	204	unsigned short node;
dde5828f RK	205	unsigned short highmem;
456335e2 RK	206	};
456335e2 RK	207
1da177e4 LT	208	struct meminfo {
1da177e4 LT	209	int nr_banks;
456335e2	210	struct membank bank[NR_BANKS];
1da177e4 LT	211	};
1da177e4 LT	212
4b5f32ce NP	213	extern struct meminfo meminfo;
4b5f32ce NP	214
d2a38ef9	215	#define for_each_nodebank(iter,mi,no) \
4b5f32ce NP	216	for (iter = 0; iter < (mi)->nr_banks; iter++) \
4b5f32ce NP	217	if ((mi)->bank[iter].node == no)
d2a38ef9 RK	218
	219	#define bank_pfn_start(bank) __phys_to_pfn((bank)->start)
	220	#define bank_pfn_end(bank) __phys_to_pfn((bank)->start + (bank)->size)
	221	#define bank_pfn_size(bank) ((bank)->size >> PAGE_SHIFT)
	222	#define bank_phys_start(bank) (bank)->start
	223	#define bank_phys_end(bank) ((bank)->start + (bank)->size)
	224	#define bank_phys_size(bank) (bank)->size
	225
7d1362c0 AB	226	#endif /* __KERNEL__ */
7d1362c0 AB	227
1da177e4	228	#endif