/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* *  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/arch/arm/setup.rst *  for more info. */#ifndef _UAPI__ASMARM_SETUP_H#define _UAPI__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))  #endif /* _UAPI__ASMARM_SETUP_H */