[people/ms/u-boot.git] / include / asm-arm / 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 linux/Documentation/arm/Setup
 *  for more info.
 *
 * NOTE:
 *  This file contains two ways to pass information from the boot
 *  loader to the kernel. The old struct param_struct is deprecated,
 *  but it will be kept in the kernel for 5 years from now
 *  (2001). This will allow boot loaders to convert to the new struct
 *  tag way.
 */
#ifndef __ASMARM_SETUP_H
#define __ASMARM_SETUP_H

/*
 * 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;
};

struct tagtable {
	u32 tag;
	int (*parse)(const struct tag *);
};

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

#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))

/*
 * Memory map description
 */
#define NR_BANKS 8

struct meminfo {
	int nr_banks;
	unsigned long end;
	struct {
		unsigned long start;
		unsigned long size;
		int           node;
	} bank[NR_BANKS];
};

extern struct meminfo meminfo;

#endif
Commit	Line	Data
b783edae WD	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 linux/Documentation/arm/Setup
	12	* for more info.
	13	*
	14	* NOTE:
	15	* This file contains two ways to pass information from the boot
	16	* loader to the kernel. The old struct param_struct is deprecated,
	17	* but it will be kept in the kernel for 5 years from now
	18	* (2001). This will allow boot loaders to convert to the new struct
	19	* tag way.
	20	*/
	21	#ifndef __ASMARM_SETUP_H
	22	#define __ASMARM_SETUP_H
	23
	24	/*
	25	* Usage:
	26	* - do not go blindly adding fields, add them at the end
	27	* - when adding fields, don't rely on the address until
	28	* a patch from me has been released
	29	* - unused fields should be zero (for future expansion)
	30	* - this structure is relatively short-lived - only
	31	* guaranteed to contain useful data in setup_arch()
	32	*/
	33	#define COMMAND_LINE_SIZE 1024
	34
	35	/* This is the old deprecated way to pass parameters to the kernel */
	36	struct param_struct {
	37	union {
	38	struct {
	39	unsigned long page_size; /* 0 */
	40	unsigned long nr_pages; /* 4 */
	41	unsigned long ramdisk_size; /* 8 */
	42	unsigned long flags; /* 12 */
	43	#define FLAG_READONLY 1
	44	#define FLAG_RDLOAD 4
	45	#define FLAG_RDPROMPT 8
	46	unsigned long rootdev; /* 16 */
	47	unsigned long video_num_cols; /* 20 */
	48	unsigned long video_num_rows; /* 24 */
	49	unsigned long video_x; /* 28 */
	50	unsigned long video_y; /* 32 */
	51	unsigned long memc_control_reg; /* 36 */
	52	unsigned char sounddefault; /* 40 */
	53	unsigned char adfsdrives; /* 41 */
	54	unsigned char bytes_per_char_h; /* 42 */
	55	unsigned char bytes_per_char_v; /* 43 */
	56	unsigned long pages_in_bank[4]; /* 44 */
	57	unsigned long pages_in_vram; /* 60 */
	58	unsigned long initrd_start; /* 64 */
	59	unsigned long initrd_size; /* 68 */
	60	unsigned long rd_start; /* 72 */
	61	unsigned long system_rev; /* 76 */
	62	unsigned long system_serial_low; /* 80 */
	63	unsigned long system_serial_high; /* 84 */
	64	unsigned long mem_fclk_21285; /* 88 */
65	} s;
66	char unused[256];
67	} u1;
68	union {
69	char paths[8][128];
70	struct {
71	unsigned long magic;
72	char n[1024 - sizeof(unsigned long)];
73	} s;
74	} u2;
75	char commandline[COMMAND_LINE_SIZE];
76	};
77
78
b783edae WD	79	/*
	80	* The new way of passing information: a list of tagged entries
	81	*/
	82
	83	/* The list ends with an ATAG_NONE node. */
	84	#define ATAG_NONE 0x00000000
	85
	86	struct tag_header {
	87	u32 size;
	88	u32 tag;
	89	};
	90
	91	/* The list must start with an ATAG_CORE node */
	92	#define ATAG_CORE 0x54410001
	93
	94	struct tag_core {
	95	u32 flags; /* bit 0 = read-only */
	96	u32 pagesize;
	97	u32 rootdev;
	98	};
	99
	100	/* it is allowed to have multiple ATAG_MEM nodes */
	101	#define ATAG_MEM 0x54410002
	102
	103	struct tag_mem32 {
	104	u32 size;
	105	u32 start; /* physical start address */
	106	};
	107
	108	/* VGA text type displays */
	109	#define ATAG_VIDEOTEXT 0x54410003
	110
	111	struct tag_videotext {
	112	u8 x;
	113	u8 y;
	114	u16 video_page;
	115	u8 video_mode;
	116	u8 video_cols;
	117	u16 video_ega_bx;
	118	u8 video_lines;
	119	u8 video_isvga;
	120	u16 video_points;
	121	};
	122
	123	/* describes how the ramdisk will be used in kernel */
	124	#define ATAG_RAMDISK 0x54410004
	125
	126	struct tag_ramdisk {
	127	u32 flags; /* bit 0 = load, bit 1 = prompt */
	128	u32 size; /* decompressed ramdisk size in _kilo_ bytes */
	129	u32 start; /* starting block of floppy-based RAM disk image */
	130	};
	131
	132	/* describes where the compressed ramdisk image lives (virtual address) */
	133	/*
	134	* this one accidentally used virtual addresses - as such,
	135	* its depreciated.
	136	*/
	137	#define ATAG_INITRD 0x54410005
	138
	139	/* describes where the compressed ramdisk image lives (physical address) */
	140	#define ATAG_INITRD2 0x54420005
	141
	142	struct tag_initrd {
143	u32 start; /* physical start address */
144	u32 size; /* size of compressed ramdisk image in bytes */
145	};
146
147	/* board serial number. "64 bits should be enough for everybody" */
148	#define ATAG_SERIAL 0x54410006
149
150	struct tag_serialnr {
151	u32 low;
152	u32 high;
153	};
154
155	/* board revision */
156	#define ATAG_REVISION 0x54410007
157
158	struct tag_revision {
159	u32 rev;
160	};
161
162	/* initial values for vesafb-type framebuffers. see struct screen_info
163	* in include/linux/tty.h
164	*/
165	#define ATAG_VIDEOLFB 0x54410008
166
167	struct tag_videolfb {
168	u16 lfb_width;
169	u16 lfb_height;
170	u16 lfb_depth;
171	u16 lfb_linelength;
172	u32 lfb_base;
173	u32 lfb_size;
174	u8 red_size;
175	u8 red_pos;
176	u8 green_size;
177	u8 green_pos;
178	u8 blue_size;
179	u8 blue_pos;
180	u8 rsvd_size;
181	u8 rsvd_pos;
182	};
183
184	/* command line: \0 terminated string */
185	#define ATAG_CMDLINE 0x54410009
186
187	struct tag_cmdline {
188	char cmdline[1]; /* this is the minimum size */
189	};
190
191	/* acorn RiscPC specific information */
192	#define ATAG_ACORN 0x41000101
193
194	struct tag_acorn {
195	u32 memc_control_reg;
196	u32 vram_pages;
197	u8 sounddefault;
198	u8 adfsdrives;
199	};
200
201	/* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
202	#define ATAG_MEMCLK 0x41000402
203
204	struct tag_memclk {
205	u32 fmemclk;
206	};
207
208	struct tag {
209	struct tag_header hdr;
210	union {
211	struct tag_core core;
212	struct tag_mem32 mem;
213	struct tag_videotext videotext;
214	struct tag_ramdisk ramdisk;
215	struct tag_initrd initrd;
216	struct tag_serialnr serialnr;
217	struct tag_revision revision;
218	struct tag_videolfb videolfb;
219	struct tag_cmdline cmdline;
220
221	/*
222	* Acorn specific
223	*/
224	struct tag_acorn acorn;
225
226	/*
227	* DC21285 specific
228	*/
229	struct tag_memclk memclk;
230	} u;
231	};
232
233	struct tagtable {
234	u32 tag;
235	int (parse)(const struct tag );
236	};
237
238	#define __tag __attribute__((unused, __section__(".taglist")))
239	#define __tagtable(tag, fn) \
240	static struct tagtable __tagtable_##fn __tag = { tag, fn }
241
242	#define tag_member_present(tag,member) \
243	((unsigned long)(&((struct tag *)0L)->member + 1) \
244	<= (tag)->hdr.size * 4)
245
246	#define tag_next(t) ((struct tag )((u32 )(t) + (t)->hdr.size))
247	#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
248
249	#define for_each_tag(t,base) \
250	for (t = base; t->hdr.size; t = tag_next(t))
251
252	/*
253	* Memory map description
254	*/
255	#define NR_BANKS 8
256
257	struct meminfo {
258	int nr_banks;
259	unsigned long end;
260	struct {
261	unsigned long start;
262	unsigned long size;
263	int node;
264	} bank[NR_BANKS];
265	};
266
267	extern struct meminfo meminfo;
268
269	#endif