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1 | /* | |
2 | * (C) Copyright 2002 | |
3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
4 | * Marius Groeger <mgroeger@sysgo.de> | |
5 | * | |
6 | * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
26 | #include <image.h> | |
27 | #include <zlib.h> | |
28 | #include <asm/byteorder.h> | |
29 | ||
30 | DECLARE_GLOBAL_DATA_PTR; | |
31 | ||
32 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ | |
33 | defined (CONFIG_CMDLINE_TAG) || \ | |
34 | defined (CONFIG_INITRD_TAG) || \ | |
35 | defined (CONFIG_SERIAL_TAG) || \ | |
36 | defined (CONFIG_REVISION_TAG) || \ | |
37 | defined (CONFIG_VFD) || \ | |
38 | defined (CONFIG_LCD) | |
39 | static void setup_start_tag (bd_t *bd); | |
40 | ||
41 | # ifdef CONFIG_SETUP_MEMORY_TAGS | |
42 | static void setup_memory_tags (bd_t *bd); | |
43 | # endif | |
44 | static void setup_commandline_tag (bd_t *bd, char *commandline); | |
45 | ||
46 | #if 0 | |
47 | static void setup_ramdisk_tag (bd_t *bd); | |
48 | #endif | |
49 | # ifdef CONFIG_INITRD_TAG | |
50 | static void setup_initrd_tag (bd_t *bd, ulong initrd_start, | |
51 | ulong initrd_end); | |
52 | # endif | |
53 | static void setup_end_tag (bd_t *bd); | |
54 | ||
55 | # if defined (CONFIG_VFD) || defined (CONFIG_LCD) | |
56 | static void setup_videolfb_tag (gd_t *gd); | |
57 | # endif | |
58 | ||
59 | static struct tag *params; | |
60 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ | |
61 | ||
62 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); | |
63 | ||
64 | void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], | |
65 | bootm_headers_t *images, int verify) | |
66 | { | |
67 | ulong initrd_start, initrd_end; | |
68 | ulong ep = 0; | |
69 | bd_t *bd = gd->bd; | |
70 | char *s; | |
71 | int machid = bd->bi_arch_number; | |
72 | void (*theKernel)(int zero, int arch, uint params); | |
73 | ||
74 | #ifdef CONFIG_CMDLINE_TAG | |
75 | char *commandline = getenv ("bootargs"); | |
76 | #endif | |
77 | ||
78 | /* find kernel entry point */ | |
79 | if (images->legacy_hdr_valid) { | |
80 | ep = image_get_ep (images->legacy_hdr_os); | |
81 | #if defined(CONFIG_FIT) | |
82 | } else if (images->fit_uname_os) { | |
83 | fit_unsupported_reset ("ARM linux bootm"); | |
84 | do_reset (cmdtp, flag, argc, argv); | |
85 | #endif | |
86 | } else { | |
87 | puts ("Could not find kernel entry point!\n"); | |
88 | do_reset (cmdtp, flag, argc, argv); | |
89 | } | |
90 | theKernel = (void (*)(int, int, uint))ep; | |
91 | ||
92 | s = getenv ("machid"); | |
93 | if (s) { | |
94 | machid = simple_strtoul (s, NULL, 16); | |
95 | printf ("Using machid 0x%x from environment\n", machid); | |
96 | } | |
97 | ||
98 | get_ramdisk (cmdtp, flag, argc, argv, images, verify, | |
99 | IH_ARCH_ARM, &initrd_start, &initrd_end); | |
100 | ||
101 | show_boot_progress (15); | |
102 | ||
103 | debug ("## Transferring control to Linux (at address %08lx) ...\n", | |
104 | (ulong) theKernel); | |
105 | ||
106 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ | |
107 | defined (CONFIG_CMDLINE_TAG) || \ | |
108 | defined (CONFIG_INITRD_TAG) || \ | |
109 | defined (CONFIG_SERIAL_TAG) || \ | |
110 | defined (CONFIG_REVISION_TAG) || \ | |
111 | defined (CONFIG_LCD) || \ | |
112 | defined (CONFIG_VFD) | |
113 | setup_start_tag (bd); | |
114 | #ifdef CONFIG_SERIAL_TAG | |
115 | setup_serial_tag (¶ms); | |
116 | #endif | |
117 | #ifdef CONFIG_REVISION_TAG | |
118 | setup_revision_tag (¶ms); | |
119 | #endif | |
120 | #ifdef CONFIG_SETUP_MEMORY_TAGS | |
121 | setup_memory_tags (bd); | |
122 | #endif | |
123 | #ifdef CONFIG_CMDLINE_TAG | |
124 | setup_commandline_tag (bd, commandline); | |
125 | #endif | |
126 | #ifdef CONFIG_INITRD_TAG | |
127 | if (initrd_start && initrd_end) | |
128 | setup_initrd_tag (bd, initrd_start, initrd_end); | |
129 | #endif | |
130 | #if defined (CONFIG_VFD) || defined (CONFIG_LCD) | |
131 | setup_videolfb_tag ((gd_t *) gd); | |
132 | #endif | |
133 | setup_end_tag (bd); | |
134 | #endif | |
135 | ||
136 | /* we assume that the kernel is in place */ | |
137 | printf ("\nStarting kernel ...\n\n"); | |
138 | ||
139 | #ifdef CONFIG_USB_DEVICE | |
140 | { | |
141 | extern void udc_disconnect (void); | |
142 | udc_disconnect (); | |
143 | } | |
144 | #endif | |
145 | ||
146 | cleanup_before_linux (); | |
147 | ||
148 | theKernel (0, machid, bd->bi_boot_params); | |
149 | } | |
150 | ||
151 | ||
152 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ | |
153 | defined (CONFIG_CMDLINE_TAG) || \ | |
154 | defined (CONFIG_INITRD_TAG) || \ | |
155 | defined (CONFIG_SERIAL_TAG) || \ | |
156 | defined (CONFIG_REVISION_TAG) || \ | |
157 | defined (CONFIG_LCD) || \ | |
158 | defined (CONFIG_VFD) | |
159 | static void setup_start_tag (bd_t *bd) | |
160 | { | |
161 | params = (struct tag *) bd->bi_boot_params; | |
162 | ||
163 | params->hdr.tag = ATAG_CORE; | |
164 | params->hdr.size = tag_size (tag_core); | |
165 | ||
166 | params->u.core.flags = 0; | |
167 | params->u.core.pagesize = 0; | |
168 | params->u.core.rootdev = 0; | |
169 | ||
170 | params = tag_next (params); | |
171 | } | |
172 | ||
173 | ||
174 | #ifdef CONFIG_SETUP_MEMORY_TAGS | |
175 | static void setup_memory_tags (bd_t *bd) | |
176 | { | |
177 | int i; | |
178 | ||
179 | for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { | |
180 | params->hdr.tag = ATAG_MEM; | |
181 | params->hdr.size = tag_size (tag_mem32); | |
182 | ||
183 | params->u.mem.start = bd->bi_dram[i].start; | |
184 | params->u.mem.size = bd->bi_dram[i].size; | |
185 | ||
186 | params = tag_next (params); | |
187 | } | |
188 | } | |
189 | #endif /* CONFIG_SETUP_MEMORY_TAGS */ | |
190 | ||
191 | ||
192 | static void setup_commandline_tag (bd_t *bd, char *commandline) | |
193 | { | |
194 | char *p; | |
195 | ||
196 | if (!commandline) | |
197 | return; | |
198 | ||
199 | /* eat leading white space */ | |
200 | for (p = commandline; *p == ' '; p++); | |
201 | ||
202 | /* skip non-existent command lines so the kernel will still | |
203 | * use its default command line. | |
204 | */ | |
205 | if (*p == '\0') | |
206 | return; | |
207 | ||
208 | params->hdr.tag = ATAG_CMDLINE; | |
209 | params->hdr.size = | |
210 | (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2; | |
211 | ||
212 | strcpy (params->u.cmdline.cmdline, p); | |
213 | ||
214 | params = tag_next (params); | |
215 | } | |
216 | ||
217 | ||
218 | #ifdef CONFIG_INITRD_TAG | |
219 | static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end) | |
220 | { | |
221 | /* an ATAG_INITRD node tells the kernel where the compressed | |
222 | * ramdisk can be found. ATAG_RDIMG is a better name, actually. | |
223 | */ | |
224 | params->hdr.tag = ATAG_INITRD2; | |
225 | params->hdr.size = tag_size (tag_initrd); | |
226 | ||
227 | params->u.initrd.start = initrd_start; | |
228 | params->u.initrd.size = initrd_end - initrd_start; | |
229 | ||
230 | params = tag_next (params); | |
231 | } | |
232 | #endif /* CONFIG_INITRD_TAG */ | |
233 | ||
234 | ||
235 | #if defined (CONFIG_VFD) || defined (CONFIG_LCD) | |
236 | extern ulong calc_fbsize (void); | |
237 | static void setup_videolfb_tag (gd_t *gd) | |
238 | { | |
239 | /* An ATAG_VIDEOLFB node tells the kernel where and how large | |
240 | * the framebuffer for video was allocated (among other things). | |
241 | * Note that a _physical_ address is passed ! | |
242 | * | |
243 | * We only use it to pass the address and size, the other entries | |
244 | * in the tag_videolfb are not of interest. | |
245 | */ | |
246 | params->hdr.tag = ATAG_VIDEOLFB; | |
247 | params->hdr.size = tag_size (tag_videolfb); | |
248 | ||
249 | params->u.videolfb.lfb_base = (u32) gd->fb_base; | |
250 | /* Fb size is calculated according to parameters for our panel | |
251 | */ | |
252 | params->u.videolfb.lfb_size = calc_fbsize(); | |
253 | ||
254 | params = tag_next (params); | |
255 | } | |
256 | #endif /* CONFIG_VFD || CONFIG_LCD */ | |
257 | ||
258 | #ifdef CONFIG_SERIAL_TAG | |
259 | void setup_serial_tag (struct tag **tmp) | |
260 | { | |
261 | struct tag *params = *tmp; | |
262 | struct tag_serialnr serialnr; | |
263 | void get_board_serial(struct tag_serialnr *serialnr); | |
264 | ||
265 | get_board_serial(&serialnr); | |
266 | params->hdr.tag = ATAG_SERIAL; | |
267 | params->hdr.size = tag_size (tag_serialnr); | |
268 | params->u.serialnr.low = serialnr.low; | |
269 | params->u.serialnr.high= serialnr.high; | |
270 | params = tag_next (params); | |
271 | *tmp = params; | |
272 | } | |
273 | #endif | |
274 | ||
275 | #ifdef CONFIG_REVISION_TAG | |
276 | void setup_revision_tag(struct tag **in_params) | |
277 | { | |
278 | u32 rev = 0; | |
279 | u32 get_board_rev(void); | |
280 | ||
281 | rev = get_board_rev(); | |
282 | params->hdr.tag = ATAG_REVISION; | |
283 | params->hdr.size = tag_size (tag_revision); | |
284 | params->u.revision.rev = rev; | |
285 | params = tag_next (params); | |
286 | } | |
287 | #endif /* CONFIG_REVISION_TAG */ | |
288 | ||
289 | ||
290 | static void setup_end_tag (bd_t *bd) | |
291 | { | |
292 | params->hdr.tag = ATAG_NONE; | |
293 | params->hdr.size = 0; | |
294 | } | |
295 | ||
296 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ |