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c609719b WD |
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 | |
232c150a | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
c609719b WD |
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 | |
232c150a | 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
c609719b WD |
21 | * |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
c609719b WD |
26 | #include <image.h> |
27 | #include <zlib.h> | |
28 | #include <asm/byteorder.h> | |
29 | ||
d87080b7 WD |
30 | DECLARE_GLOBAL_DATA_PTR; |
31 | ||
c609719b WD |
32 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ |
33 | defined (CONFIG_CMDLINE_TAG) || \ | |
34 | defined (CONFIG_INITRD_TAG) || \ | |
b6e4c403 WD |
35 | defined (CONFIG_SERIAL_TAG) || \ |
36 | defined (CONFIG_REVISION_TAG) || \ | |
8655b6f8 WD |
37 | defined (CONFIG_VFD) || \ |
38 | defined (CONFIG_LCD) | |
5779d8d9 WD |
39 | static void setup_start_tag (bd_t *bd); |
40 | ||
699b13a6 | 41 | # ifdef CONFIG_SETUP_MEMORY_TAGS |
5779d8d9 | 42 | static void setup_memory_tags (bd_t *bd); |
699b13a6 | 43 | # endif |
5779d8d9 WD |
44 | static void setup_commandline_tag (bd_t *bd, char *commandline); |
45 | ||
699b13a6 | 46 | # ifdef CONFIG_INITRD_TAG |
5779d8d9 WD |
47 | static void setup_initrd_tag (bd_t *bd, ulong initrd_start, |
48 | ulong initrd_end); | |
699b13a6 | 49 | # endif |
5779d8d9 WD |
50 | static void setup_end_tag (bd_t *bd); |
51 | ||
8655b6f8 | 52 | # if defined (CONFIG_VFD) || defined (CONFIG_LCD) |
5779d8d9 | 53 | static void setup_videolfb_tag (gd_t *gd); |
699b13a6 | 54 | # endif |
c609719b | 55 | |
c609719b WD |
56 | static struct tag *params; |
57 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ | |
58 | ||
d5934ad7 MB |
59 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
60 | ||
5779d8d9 | 61 | void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], |
8a5ea3e6 | 62 | bootm_headers_t *images) |
c609719b | 63 | { |
d5934ad7 MB |
64 | ulong initrd_start, initrd_end; |
65 | ulong ep = 0; | |
66 | bd_t *bd = gd->bd; | |
67 | char *s; | |
68 | int machid = bd->bi_arch_number; | |
69 | void (*theKernel)(int zero, int arch, uint params); | |
cd7c596e | 70 | int ret; |
5779d8d9 | 71 | |
c609719b | 72 | #ifdef CONFIG_CMDLINE_TAG |
5779d8d9 | 73 | char *commandline = getenv ("bootargs"); |
c609719b WD |
74 | #endif |
75 | ||
d5934ad7 MB |
76 | /* find kernel entry point */ |
77 | if (images->legacy_hdr_valid) { | |
cb1c4896 | 78 | ep = image_get_ep (&images->legacy_hdr_os_copy); |
d5934ad7 MB |
79 | #if defined(CONFIG_FIT) |
80 | } else if (images->fit_uname_os) { | |
cd7c596e MB |
81 | ret = fit_image_get_entry (images->fit_hdr_os, |
82 | images->fit_noffset_os, &ep); | |
83 | if (ret) { | |
84 | puts ("Can't get entry point property!\n"); | |
85 | goto error; | |
86 | } | |
d5934ad7 MB |
87 | #endif |
88 | } else { | |
89 | puts ("Could not find kernel entry point!\n"); | |
cd7c596e | 90 | goto error; |
d5934ad7 MB |
91 | } |
92 | theKernel = (void (*)(int, int, uint))ep; | |
c609719b | 93 | |
3c234efa UKK |
94 | s = getenv ("machid"); |
95 | if (s) { | |
96 | machid = simple_strtoul (s, NULL, 16); | |
97 | printf ("Using machid 0x%x from environment\n", machid); | |
98 | } | |
99 | ||
d985c849 MB |
100 | ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_ARM, |
101 | &initrd_start, &initrd_end); | |
102 | if (ret) | |
cd7c596e | 103 | goto error; |
c609719b | 104 | |
fad63407 | 105 | show_boot_progress (15); |
384ae025 | 106 | |
5779d8d9 WD |
107 | debug ("## Transferring control to Linux (at address %08lx) ...\n", |
108 | (ulong) theKernel); | |
c609719b WD |
109 | |
110 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ | |
111 | defined (CONFIG_CMDLINE_TAG) || \ | |
112 | defined (CONFIG_INITRD_TAG) || \ | |
b6e4c403 WD |
113 | defined (CONFIG_SERIAL_TAG) || \ |
114 | defined (CONFIG_REVISION_TAG) || \ | |
8655b6f8 | 115 | defined (CONFIG_LCD) || \ |
c609719b | 116 | defined (CONFIG_VFD) |
5779d8d9 | 117 | setup_start_tag (bd); |
b6e4c403 WD |
118 | #ifdef CONFIG_SERIAL_TAG |
119 | setup_serial_tag (¶ms); | |
120 | #endif | |
121 | #ifdef CONFIG_REVISION_TAG | |
122 | setup_revision_tag (¶ms); | |
123 | #endif | |
c609719b | 124 | #ifdef CONFIG_SETUP_MEMORY_TAGS |
5779d8d9 | 125 | setup_memory_tags (bd); |
c609719b WD |
126 | #endif |
127 | #ifdef CONFIG_CMDLINE_TAG | |
5779d8d9 | 128 | setup_commandline_tag (bd, commandline); |
c609719b WD |
129 | #endif |
130 | #ifdef CONFIG_INITRD_TAG | |
5779d8d9 WD |
131 | if (initrd_start && initrd_end) |
132 | setup_initrd_tag (bd, initrd_start, initrd_end); | |
c609719b | 133 | #endif |
8655b6f8 | 134 | #if defined (CONFIG_VFD) || defined (CONFIG_LCD) |
5779d8d9 | 135 | setup_videolfb_tag ((gd_t *) gd); |
c609719b | 136 | #endif |
5779d8d9 | 137 | setup_end_tag (bd); |
c609719b WD |
138 | #endif |
139 | ||
75fa002c KG |
140 | if (!images->autostart) |
141 | return ; | |
142 | ||
5779d8d9 WD |
143 | /* we assume that the kernel is in place */ |
144 | printf ("\nStarting kernel ...\n\n"); | |
c609719b | 145 | |
232c150a WD |
146 | #ifdef CONFIG_USB_DEVICE |
147 | { | |
148 | extern void udc_disconnect (void); | |
149 | udc_disconnect (); | |
150 | } | |
151 | #endif | |
152 | ||
5779d8d9 | 153 | cleanup_before_linux (); |
c609719b | 154 | |
3c234efa | 155 | theKernel (0, machid, bd->bi_boot_params); |
cd7c596e MB |
156 | /* does not return */ |
157 | return; | |
158 | ||
159 | error: | |
160 | if (images->autostart) | |
161 | do_reset (cmdtp, flag, argc, argv); | |
162 | return; | |
c609719b WD |
163 | } |
164 | ||
165 | ||
166 | #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ | |
167 | defined (CONFIG_CMDLINE_TAG) || \ | |
168 | defined (CONFIG_INITRD_TAG) || \ | |
b6e4c403 WD |
169 | defined (CONFIG_SERIAL_TAG) || \ |
170 | defined (CONFIG_REVISION_TAG) || \ | |
8655b6f8 | 171 | defined (CONFIG_LCD) || \ |
c609719b | 172 | defined (CONFIG_VFD) |
5779d8d9 | 173 | static void setup_start_tag (bd_t *bd) |
c609719b | 174 | { |
5779d8d9 | 175 | params = (struct tag *) bd->bi_boot_params; |
c609719b | 176 | |
5779d8d9 WD |
177 | params->hdr.tag = ATAG_CORE; |
178 | params->hdr.size = tag_size (tag_core); | |
c609719b | 179 | |
5779d8d9 WD |
180 | params->u.core.flags = 0; |
181 | params->u.core.pagesize = 0; | |
182 | params->u.core.rootdev = 0; | |
c609719b | 183 | |
5779d8d9 | 184 | params = tag_next (params); |
c609719b WD |
185 | } |
186 | ||
187 | ||
699b13a6 | 188 | #ifdef CONFIG_SETUP_MEMORY_TAGS |
5779d8d9 | 189 | static void setup_memory_tags (bd_t *bd) |
c609719b | 190 | { |
5779d8d9 | 191 | int i; |
c609719b | 192 | |
5779d8d9 WD |
193 | for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { |
194 | params->hdr.tag = ATAG_MEM; | |
195 | params->hdr.size = tag_size (tag_mem32); | |
c609719b | 196 | |
5779d8d9 WD |
197 | params->u.mem.start = bd->bi_dram[i].start; |
198 | params->u.mem.size = bd->bi_dram[i].size; | |
c609719b | 199 | |
5779d8d9 WD |
200 | params = tag_next (params); |
201 | } | |
c609719b | 202 | } |
5779d8d9 | 203 | #endif /* CONFIG_SETUP_MEMORY_TAGS */ |
c609719b WD |
204 | |
205 | ||
5779d8d9 | 206 | static void setup_commandline_tag (bd_t *bd, char *commandline) |
c609719b | 207 | { |
5779d8d9 | 208 | char *p; |
c609719b | 209 | |
109c0e3a WD |
210 | if (!commandline) |
211 | return; | |
212 | ||
5779d8d9 WD |
213 | /* eat leading white space */ |
214 | for (p = commandline; *p == ' '; p++); | |
c609719b | 215 | |
5779d8d9 WD |
216 | /* skip non-existent command lines so the kernel will still |
217 | * use its default command line. | |
218 | */ | |
219 | if (*p == '\0') | |
220 | return; | |
c609719b | 221 | |
5779d8d9 WD |
222 | params->hdr.tag = ATAG_CMDLINE; |
223 | params->hdr.size = | |
224 | (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2; | |
c609719b | 225 | |
5779d8d9 | 226 | strcpy (params->u.cmdline.cmdline, p); |
c609719b | 227 | |
5779d8d9 | 228 | params = tag_next (params); |
c609719b WD |
229 | } |
230 | ||
231 | ||
699b13a6 | 232 | #ifdef CONFIG_INITRD_TAG |
5779d8d9 | 233 | static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end) |
c609719b | 234 | { |
5779d8d9 WD |
235 | /* an ATAG_INITRD node tells the kernel where the compressed |
236 | * ramdisk can be found. ATAG_RDIMG is a better name, actually. | |
237 | */ | |
498b8db7 | 238 | params->hdr.tag = ATAG_INITRD2; |
5779d8d9 | 239 | params->hdr.size = tag_size (tag_initrd); |
c609719b | 240 | |
5779d8d9 WD |
241 | params->u.initrd.start = initrd_start; |
242 | params->u.initrd.size = initrd_end - initrd_start; | |
c609719b | 243 | |
5779d8d9 | 244 | params = tag_next (params); |
c609719b | 245 | } |
5779d8d9 | 246 | #endif /* CONFIG_INITRD_TAG */ |
c609719b WD |
247 | |
248 | ||
8655b6f8 WD |
249 | #if defined (CONFIG_VFD) || defined (CONFIG_LCD) |
250 | extern ulong calc_fbsize (void); | |
5779d8d9 | 251 | static void setup_videolfb_tag (gd_t *gd) |
c609719b | 252 | { |
5779d8d9 WD |
253 | /* An ATAG_VIDEOLFB node tells the kernel where and how large |
254 | * the framebuffer for video was allocated (among other things). | |
255 | * Note that a _physical_ address is passed ! | |
256 | * | |
257 | * We only use it to pass the address and size, the other entries | |
258 | * in the tag_videolfb are not of interest. | |
259 | */ | |
260 | params->hdr.tag = ATAG_VIDEOLFB; | |
261 | params->hdr.size = tag_size (tag_videolfb); | |
c609719b | 262 | |
5779d8d9 | 263 | params->u.videolfb.lfb_base = (u32) gd->fb_base; |
8655b6f8 WD |
264 | /* Fb size is calculated according to parameters for our panel |
265 | */ | |
266 | params->u.videolfb.lfb_size = calc_fbsize(); | |
c609719b | 267 | |
5779d8d9 | 268 | params = tag_next (params); |
c609719b | 269 | } |
8655b6f8 | 270 | #endif /* CONFIG_VFD || CONFIG_LCD */ |
c609719b | 271 | |
3a574cbe WD |
272 | #ifdef CONFIG_SERIAL_TAG |
273 | void setup_serial_tag (struct tag **tmp) | |
274 | { | |
275 | struct tag *params = *tmp; | |
276 | struct tag_serialnr serialnr; | |
277 | void get_board_serial(struct tag_serialnr *serialnr); | |
278 | ||
279 | get_board_serial(&serialnr); | |
280 | params->hdr.tag = ATAG_SERIAL; | |
281 | params->hdr.size = tag_size (tag_serialnr); | |
282 | params->u.serialnr.low = serialnr.low; | |
283 | params->u.serialnr.high= serialnr.high; | |
284 | params = tag_next (params); | |
285 | *tmp = params; | |
286 | } | |
287 | #endif | |
288 | ||
289f932c WD |
289 | #ifdef CONFIG_REVISION_TAG |
290 | void setup_revision_tag(struct tag **in_params) | |
291 | { | |
292 | u32 rev = 0; | |
289f932c WD |
293 | u32 get_board_rev(void); |
294 | ||
295 | rev = get_board_rev(); | |
289f932c WD |
296 | params->hdr.tag = ATAG_REVISION; |
297 | params->hdr.size = tag_size (tag_revision); | |
298 | params->u.revision.rev = rev; | |
299 | params = tag_next (params); | |
300 | } | |
301 | #endif /* CONFIG_REVISION_TAG */ | |
302 | ||
303 | ||
5779d8d9 | 304 | static void setup_end_tag (bd_t *bd) |
c609719b | 305 | { |
5779d8d9 WD |
306 | params->hdr.tag = ATAG_NONE; |
307 | params->hdr.size = 0; | |
c609719b WD |
308 | } |
309 | ||
310 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ |