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1 | /*\r | |
2 | * linux/include/asm/setup.h\r | |
3 | *\r | |
4 | * Copyright (C) 1997-1999 Russell King\r | |
5 | *\r | |
6 | * This program is free software; you can redistribute it and/or modify\r | |
7 | * it under the terms of the GNU General Public License version 2 as\r | |
8 | * published by the Free Software Foundation.\r | |
9 | *\r | |
10 | * Structure passed to kernel to tell it about the\r | |
11 | * hardware it's running on. See linux/Documentation/arm/Setup\r | |
12 | * for more info.\r | |
13 | *\r | |
14 | * NOTE:\r | |
15 | * This file contains two ways to pass information from the boot\r | |
16 | * loader to the kernel. The old struct param_struct is deprecated,\r | |
17 | * but it will be kept in the kernel for 5 years from now\r | |
18 | * (2001). This will allow boot loaders to convert to the new struct\r | |
19 | * tag way.\r | |
20 | */\r | |
21 | #ifndef __ASMARM_SETUP_H\r | |
22 | #define __ASMARM_SETUP_H\r\r | |
23 | \r\r | |
24 | #define u32 UINT32\r\r | |
25 | #define u16 UINT16\r\r | |
26 | #define u8 UINT8\r\r | |
27 | \r | |
28 | \r | |
29 | /*#ifndef CONFIG_ACCEPT_GPL\r | |
30 | #error This file covered by GPL but CONFIG_ACCEPT_GPL undefined.\r | |
31 | #endif*/\r | |
32 | \r | |
33 | /*\r | |
34 | * Usage:\r | |
35 | * - do not go blindly adding fields, add them at the end\r | |
36 | * - when adding fields, don't rely on the address until\r | |
37 | * a patch from me has been released\r | |
38 | * - unused fields should be zero (for future expansion)\r | |
39 | * - this structure is relatively short-lived - only\r | |
40 | * guaranteed to contain useful data in setup_arch()\r | |
41 | */\r | |
42 | #define COMMAND_LINE_SIZE 1024\r | |
43 | \r | |
44 | /* This is the old deprecated way to pass parameters to the kernel */\r | |
45 | struct param_struct {\r | |
46 | union {\r | |
47 | struct {\r | |
48 | unsigned long page_size; /* 0 */\r | |
49 | unsigned long nr_pages; /* 4 */\r | |
50 | unsigned long ramdisk_size; /* 8 */\r | |
51 | unsigned long flags; /* 12 */\r | |
52 | #define FLAG_READONLY 1\r | |
53 | #define FLAG_RDLOAD 4\r | |
54 | #define FLAG_RDPROMPT 8\r | |
55 | unsigned long rootdev; /* 16 */\r | |
56 | unsigned long video_num_cols; /* 20 */\r | |
57 | unsigned long video_num_rows; /* 24 */\r | |
58 | unsigned long video_x; /* 28 */\r | |
59 | unsigned long video_y; /* 32 */\r | |
60 | unsigned long memc_control_reg; /* 36 */\r | |
61 | unsigned char sounddefault; /* 40 */\r | |
62 | unsigned char adfsdrives; /* 41 */\r | |
63 | unsigned char bytes_per_char_h; /* 42 */\r | |
64 | unsigned char bytes_per_char_v; /* 43 */\r | |
65 | unsigned long pages_in_bank[4]; /* 44 */\r | |
66 | unsigned long pages_in_vram; /* 60 */\r | |
67 | unsigned long initrd_start; /* 64 */\r | |
68 | unsigned long initrd_size; /* 68 */\r | |
69 | unsigned long rd_start; /* 72 */\r | |
70 | unsigned long system_rev; /* 76 */\r | |
71 | unsigned long system_serial_low; /* 80 */\r | |
72 | unsigned long system_serial_high; /* 84 */\r | |
73 | unsigned long mem_fclk_21285; /* 88 */\r | |
74 | } s;\r | |
75 | char unused[256];\r | |
76 | } u1;\r | |
77 | union {\r | |
78 | char paths[8][128];\r | |
79 | struct {\r | |
80 | unsigned long magic;\r | |
81 | char n[1024 - sizeof(unsigned long)];\r | |
82 | } s;\r | |
83 | } u2;\r | |
84 | char commandline[COMMAND_LINE_SIZE];\r | |
85 | };\r | |
86 | \r | |
87 | \r | |
88 | \r | |
89 | /*\r | |
90 | * The new way of passing information: a list of tagged entries\r | |
91 | */\r | |
92 | \r | |
93 | /* The list ends with an ATAG_NONE node. */\r | |
94 | #define ATAG_NONE 0x00000000\r | |
95 | \r | |
96 | struct tag_header {\r | |
97 | u32 size;\r | |
98 | u32 tag;\r | |
99 | };\r | |
100 | \r | |
101 | /* The list must start with an ATAG_CORE node */\r | |
102 | #define ATAG_CORE 0x54410001\r | |
103 | \r | |
104 | struct tag_core {\r | |
105 | u32 flags; /* bit 0 = read-only */\r | |
106 | u32 pagesize;\r | |
107 | u32 rootdev;\r | |
108 | };\r | |
109 | \r | |
110 | /* it is allowed to have multiple ATAG_MEM nodes */\r | |
111 | #define ATAG_MEM 0x54410002\r | |
112 | \r | |
113 | struct tag_mem32 {\r | |
114 | u32 size;\r | |
115 | u32 start; /* physical start address */\r | |
116 | };\r | |
117 | \r | |
118 | /* VGA text type displays */\r | |
119 | #define ATAG_VIDEOTEXT 0x54410003\r | |
120 | \r | |
121 | struct tag_videotext {\r | |
122 | u8 x;\r | |
123 | u8 y;\r | |
124 | u16 video_page;\r | |
125 | u8 video_mode;\r | |
126 | u8 video_cols;\r | |
127 | u16 video_ega_bx;\r | |
128 | u8 video_lines;\r | |
129 | u8 video_isvga;\r | |
130 | u16 video_points;\r | |
131 | };\r | |
132 | \r | |
133 | /* describes how the ramdisk will be used in kernel */\r | |
134 | #define ATAG_RAMDISK 0x54410004\r | |
135 | \r | |
136 | struct tag_ramdisk {\r | |
137 | u32 flags; /* bit 0 = load, bit 1 = prompt */\r | |
138 | u32 size; /* decompressed ramdisk size in _kilo_ bytes */\r | |
139 | u32 start; /* starting block of floppy-based RAM disk image */\r | |
140 | };\r | |
141 | \r | |
142 | /* describes where the compressed ramdisk image lives */\r | |
143 | #define ATAG_INITRD 0x54410005\r\r | |
144 | \r\r | |
145 | #define ATAG_INITRD2 0x54420005\r | |
146 | \r | |
147 | struct tag_initrd {\r | |
148 | u32 start; /* physical start address */\r | |
149 | u32 size; /* size of compressed ramdisk image in bytes */\r | |
150 | };\r | |
151 | \r | |
152 | /* board serial number. "64 bits should be enough for everybody" */\r | |
153 | #define ATAG_SERIAL 0x54410006\r | |
154 | \r | |
155 | struct tag_serialnr {\r | |
156 | u32 low;\r | |
157 | u32 high;\r | |
158 | };\r | |
159 | \r | |
160 | /* board revision */\r | |
161 | #define ATAG_REVISION 0x54410007\r | |
162 | \r | |
163 | struct tag_revision {\r | |
164 | u32 rev;\r | |
165 | };\r | |
166 | \r | |
167 | /* initial values for vesafb-type framebuffers. see struct screen_info\r | |
168 | * in include/linux/tty.h\r | |
169 | */\r | |
170 | #define ATAG_VIDEOLFB 0x54410008\r | |
171 | \r | |
172 | struct tag_videolfb {\r | |
173 | u16 lfb_width;\r | |
174 | u16 lfb_height;\r | |
175 | u16 lfb_depth;\r | |
176 | u16 lfb_linelength;\r | |
177 | u32 lfb_base;\r | |
178 | u32 lfb_size;\r | |
179 | u8 red_size;\r | |
180 | u8 red_pos;\r | |
181 | u8 green_size;\r | |
182 | u8 green_pos;\r | |
183 | u8 blue_size;\r | |
184 | u8 blue_pos;\r | |
185 | u8 rsvd_size;\r | |
186 | u8 rsvd_pos;\r | |
187 | };\r | |
188 | \r | |
189 | /* command line: \0 terminated string */\r | |
190 | #define ATAG_CMDLINE 0x54410009\r | |
191 | \r | |
192 | struct tag_cmdline {\r | |
193 | char cmdline[1]; /* this is the minimum size */\r | |
194 | };\r | |
195 | \r | |
196 | /* acorn RiscPC specific information */\r | |
197 | #define ATAG_ACORN 0x41000101\r | |
198 | \r | |
199 | struct tag_acorn {\r | |
200 | u32 memc_control_reg;\r | |
201 | u32 vram_pages;\r | |
202 | u8 sounddefault;\r | |
203 | u8 adfsdrives;\r | |
204 | };\r | |
205 | \r | |
206 | #define ATAG_PTABLE 0x53410001\r | |
207 | \r | |
208 | /* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */\r | |
209 | #define ATAG_MEMCLK 0x41000402\r | |
210 | \r | |
211 | struct tag_memclk {\r | |
212 | u32 fmemclk;\r | |
213 | };\r | |
214 | \r | |
215 | struct tag {\r | |
216 | struct tag_header hdr;\r | |
217 | union {\r | |
218 | struct tag_core core;\r | |
219 | struct tag_mem32 mem;\r | |
220 | struct tag_videotext videotext;\r | |
221 | struct tag_ramdisk ramdisk;\r | |
222 | struct tag_initrd initrd;\r | |
223 | struct tag_serialnr serialnr;\r | |
224 | struct tag_revision revision;\r | |
225 | struct tag_videolfb videolfb;\r | |
226 | struct tag_cmdline cmdline;\r | |
227 | // struct tag_ptable ptable; \r | |
228 | \r | |
229 | /*\r | |
230 | * Acorn specific\r | |
231 | */\r | |
232 | struct tag_acorn acorn;\r | |
233 | \r | |
234 | /*\r | |
235 | * DC21285 specific\r | |
236 | */\r | |
237 | struct tag_memclk memclk;\r | |
238 | \r | |
239 | } u;\r | |
240 | };\r | |
241 | \r | |
242 | struct tagtable {\r | |
243 | u32 tag;\r | |
244 | int (*parse)(const struct tag *);\r | |
245 | };\r | |
246 | \r | |
247 | #define __tag __attribute__((unused, __section__(".taglist")))\r | |
248 | #define __tagtable(tag, fn) \\r | |
249 | static struct tagtable __tagtable_##fn __tag = { tag, fn }\r | |
250 | \r | |
251 | #define tag_member_present(tag,member) \\r | |
252 | ((unsigned long)(&((struct tag *)0L)->member + 1) \\r | |
253 | <= (tag)->hdr.size * 4)\r | |
254 | \r | |
255 | #define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size))\r | |
256 | #define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)\r | |
257 | \r | |
258 | #define for_each_tag(t,base) \\r | |
259 | for (t = base; t->hdr.size; t = tag_next(t))\r | |
260 | \r | |
261 | /*\r | |
262 | * Memory map description\r | |
263 | */\r | |
264 | #define NR_BANKS 8\r | |
265 | \r | |
266 | struct meminfo {\r | |
267 | int nr_banks;\r | |
268 | unsigned long end;\r | |
269 | struct {\r | |
270 | unsigned long start;\r | |
271 | unsigned long size;\r | |
272 | int node;\r | |
273 | } bank[NR_BANKS];\r | |
274 | };\r | |
275 | \r | |
276 | extern struct meminfo meminfo;\r | |
277 | \r | |
278 | #endif\r |