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/*
* Copyright (C) 2004-2006 Atmel Corporation
*
* Based on linux/include/asm-arm/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.
*/
#ifndef __ASM_AVR32_SETUP_H__
#define __ASM_AVR32_SETUP_H__
#include <uapi/asm/setup.h>
/* Magic number indicating that a tag table is present */
#define ATAG_MAGIC 0xa2a25441
#ifndef __ASSEMBLY__
/*
* Generic memory range, used by several tags.
*
* addr is always physical.
* size is measured in bytes.
* next is for use by the OS, e.g. for grouping regions into
* linked lists.
*/
struct tag_mem_range {
u32 addr;
u32 size;
struct tag_mem_range * next;
};
/* 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;
u32 pagesize;
u32 rootdev;
};
/* it is allowed to have multiple ATAG_MEM nodes */
#define ATAG_MEM 0x54410002
/* ATAG_MEM uses tag_mem_range */
/* command line: \0 terminated string */
#define ATAG_CMDLINE 0x54410003
struct tag_cmdline {
char cmdline[1]; /* this is the minimum size */
};
/* Ramdisk image (may be compressed) */
#define ATAG_RDIMG 0x54410004
/* ATAG_RDIMG uses tag_mem_range */
/* Information about various clocks present in the system */
#define ATAG_CLOCK 0x54410005
struct tag_clock {
u32 clock_id; /* Which clock are we talking about? */
u32 clock_flags; /* Special features */
u64 clock_hz; /* Clock speed in Hz */
};
/* The clock types we know about */
#define CLOCK_BOOTCPU 0
/* Memory reserved for the system (e.g. the bootloader) */
#define ATAG_RSVD_MEM 0x54410006
/* ATAG_RSVD_MEM uses tag_mem_range */
/* Ethernet information */
#define ATAG_ETHERNET 0x54410007
struct tag_ethernet {
u8 mac_index;
u8 mii_phy_addr;
u8 hw_address[6];
};
#define ETH_INVALID_PHY 0xff
/* board information */
#define ATAG_BOARDINFO 0x54410008
struct tag_boardinfo {
u32 board_number;
};
struct tag {
struct tag_header hdr;
union {
struct tag_core core;
struct tag_mem_range mem_range;
struct tag_cmdline cmdline;
struct tag_clock clock;
struct tag_ethernet ethernet;
struct tag_boardinfo boardinfo;
} u;
};
struct tagtable {
u32 tag;
int (*parse)(struct tag *);
};
#define __tag __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))
extern struct tag *bootloader_tags;
extern resource_size_t fbmem_start;
extern resource_size_t fbmem_size;
extern u32 board_number;
void setup_processor(void);
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_AVR32_SETUP_H__ */