221 lines
4.4 KiB
C
221 lines
4.4 KiB
C
/*
|
|
* 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
|
|
|
|
#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 __attribute_used__ __attribute__((__section__(".taglist.init")))
|
|
#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
|
|
*/
|
|
#ifdef CONFIG_ARCH_LH7A40X
|
|
# define NR_BANKS 16
|
|
#else
|
|
# define NR_BANKS 8
|
|
#endif
|
|
|
|
struct membank {
|
|
unsigned long start;
|
|
unsigned long size;
|
|
int node;
|
|
};
|
|
|
|
struct meminfo {
|
|
int nr_banks;
|
|
struct membank bank[NR_BANKS];
|
|
};
|
|
|
|
/*
|
|
* Early command line parameters.
|
|
*/
|
|
struct early_params {
|
|
const char *arg;
|
|
void (*fn)(char **p);
|
|
};
|
|
|
|
#define __early_param(name,fn) \
|
|
static struct early_params __early_##fn __attribute_used__ \
|
|
__attribute__((__section__(".early_param.init"))) = { name, fn }
|
|
|
|
#endif
|