Add linux-next specific files for 20110831
[linux-2.6/next.git] / arch / avr32 / include / asm / setup.h
blob160543dbec7eb1c9725c6edf3ba9259e5fd9bd9d
1 /*
2 * Copyright (C) 2004-2006 Atmel Corporation
4 * Based on linux/include/asm-arm/setup.h
5 * Copyright (C) 1997-1999 Russell King
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 #ifndef __ASM_AVR32_SETUP_H__
12 #define __ASM_AVR32_SETUP_H__
14 #define COMMAND_LINE_SIZE 256
16 #ifdef __KERNEL__
18 /* Magic number indicating that a tag table is present */
19 #define ATAG_MAGIC 0xa2a25441
21 #ifndef __ASSEMBLY__
24 * Generic memory range, used by several tags.
26 * addr is always physical.
27 * size is measured in bytes.
28 * next is for use by the OS, e.g. for grouping regions into
29 * linked lists.
31 struct tag_mem_range {
32 u32 addr;
33 u32 size;
34 struct tag_mem_range * next;
37 /* The list ends with an ATAG_NONE node. */
38 #define ATAG_NONE 0x00000000
40 struct tag_header {
41 u32 size;
42 u32 tag;
45 /* The list must start with an ATAG_CORE node */
46 #define ATAG_CORE 0x54410001
48 struct tag_core {
49 u32 flags;
50 u32 pagesize;
51 u32 rootdev;
54 /* it is allowed to have multiple ATAG_MEM nodes */
55 #define ATAG_MEM 0x54410002
56 /* ATAG_MEM uses tag_mem_range */
58 /* command line: \0 terminated string */
59 #define ATAG_CMDLINE 0x54410003
61 struct tag_cmdline {
62 char cmdline[1]; /* this is the minimum size */
65 /* Ramdisk image (may be compressed) */
66 #define ATAG_RDIMG 0x54410004
67 /* ATAG_RDIMG uses tag_mem_range */
69 /* Information about various clocks present in the system */
70 #define ATAG_CLOCK 0x54410005
72 struct tag_clock {
73 u32 clock_id; /* Which clock are we talking about? */
74 u32 clock_flags; /* Special features */
75 u64 clock_hz; /* Clock speed in Hz */
78 /* The clock types we know about */
79 #define CLOCK_BOOTCPU 0
81 /* Memory reserved for the system (e.g. the bootloader) */
82 #define ATAG_RSVD_MEM 0x54410006
83 /* ATAG_RSVD_MEM uses tag_mem_range */
85 /* Ethernet information */
87 #define ATAG_ETHERNET 0x54410007
89 struct tag_ethernet {
90 u8 mac_index;
91 u8 mii_phy_addr;
92 u8 hw_address[6];
95 #define ETH_INVALID_PHY 0xff
97 /* board information */
98 #define ATAG_BOARDINFO 0x54410008
100 struct tag_boardinfo {
101 u32 board_number;
104 struct tag {
105 struct tag_header hdr;
106 union {
107 struct tag_core core;
108 struct tag_mem_range mem_range;
109 struct tag_cmdline cmdline;
110 struct tag_clock clock;
111 struct tag_ethernet ethernet;
112 struct tag_boardinfo boardinfo;
113 } u;
116 struct tagtable {
117 u32 tag;
118 int (*parse)(struct tag *);
121 #define __tag __used __attribute__((__section__(".taglist.init")))
122 #define __tagtable(tag, fn) \
123 static struct tagtable __tagtable_##fn __tag = { tag, fn }
125 #define tag_member_present(tag,member) \
126 ((unsigned long)(&((struct tag *)0L)->member + 1) \
127 <= (tag)->hdr.size * 4)
129 #define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size))
130 #define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
132 #define for_each_tag(t,base) \
133 for (t = base; t->hdr.size; t = tag_next(t))
135 extern struct tag *bootloader_tags;
137 extern resource_size_t fbmem_start;
138 extern resource_size_t fbmem_size;
139 extern u32 board_number;
141 void setup_processor(void);
143 #endif /* !__ASSEMBLY__ */
145 #endif /* __KERNEL__ */
147 #endif /* __ASM_AVR32_SETUP_H__ */