3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
6 * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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.
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.
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
28 #include <asm/byteorder.h>
30 DECLARE_GLOBAL_DATA_PTR;
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) || \
39 static void setup_start_tag (bd_t *bd);
41 # ifdef CONFIG_SETUP_MEMORY_TAGS
42 static void setup_memory_tags (bd_t *bd);
44 static void setup_commandline_tag (bd_t *bd, char *commandline);
46 # ifdef CONFIG_INITRD_TAG
47 static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
50 static void setup_end_tag (bd_t *bd);
52 # if defined (CONFIG_VFD) || defined (CONFIG_LCD)
53 static void setup_videolfb_tag (gd_t *gd);
56 static struct tag *params;
57 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
59 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
61 void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
62 bootm_headers_t *images)
64 ulong initrd_start, initrd_end;
68 int machid = bd->bi_arch_number;
69 void (*theKernel)(int zero, int arch, uint params);
72 #ifdef CONFIG_CMDLINE_TAG
73 char *commandline = getenv ("bootargs");
76 /* find kernel entry point */
77 if (images->legacy_hdr_valid) {
78 ep = image_get_ep (&images->legacy_hdr_os_copy);
79 #if defined(CONFIG_FIT)
80 } else if (images->fit_uname_os) {
81 ret = fit_image_get_entry (images->fit_hdr_os,
82 images->fit_noffset_os, &ep);
84 puts ("Can't get entry point property!\n");
89 puts ("Could not find kernel entry point!\n");
92 theKernel = (void (*)(int, int, uint))ep;
94 s = getenv ("machid");
96 machid = simple_strtoul (s, NULL, 16);
97 printf ("Using machid 0x%x from environment\n", machid);
100 ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_ARM,
101 &initrd_start, &initrd_end);
105 show_boot_progress (15);
107 debug ("## Transferring control to Linux (at address %08lx) ...\n",
110 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
111 defined (CONFIG_CMDLINE_TAG) || \
112 defined (CONFIG_INITRD_TAG) || \
113 defined (CONFIG_SERIAL_TAG) || \
114 defined (CONFIG_REVISION_TAG) || \
115 defined (CONFIG_LCD) || \
117 setup_start_tag (bd);
118 #ifdef CONFIG_SERIAL_TAG
119 setup_serial_tag (¶ms);
121 #ifdef CONFIG_REVISION_TAG
122 setup_revision_tag (¶ms);
124 #ifdef CONFIG_SETUP_MEMORY_TAGS
125 setup_memory_tags (bd);
127 #ifdef CONFIG_CMDLINE_TAG
128 setup_commandline_tag (bd, commandline);
130 #ifdef CONFIG_INITRD_TAG
131 if (initrd_start && initrd_end)
132 setup_initrd_tag (bd, initrd_start, initrd_end);
134 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
135 setup_videolfb_tag ((gd_t *) gd);
140 if (!images->autostart)
143 /* we assume that the kernel is in place */
144 printf ("\nStarting kernel ...\n\n");
146 #ifdef CONFIG_USB_DEVICE
148 extern void udc_disconnect (void);
153 cleanup_before_linux ();
155 theKernel (0, machid, bd->bi_boot_params);
156 /* does not return */
160 if (images->autostart)
161 do_reset (cmdtp, flag, argc, argv);
166 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
167 defined (CONFIG_CMDLINE_TAG) || \
168 defined (CONFIG_INITRD_TAG) || \
169 defined (CONFIG_SERIAL_TAG) || \
170 defined (CONFIG_REVISION_TAG) || \
171 defined (CONFIG_LCD) || \
173 static void setup_start_tag (bd_t *bd)
175 params = (struct tag *) bd->bi_boot_params;
177 params->hdr.tag = ATAG_CORE;
178 params->hdr.size = tag_size (tag_core);
180 params->u.core.flags = 0;
181 params->u.core.pagesize = 0;
182 params->u.core.rootdev = 0;
184 params = tag_next (params);
188 #ifdef CONFIG_SETUP_MEMORY_TAGS
189 static void setup_memory_tags (bd_t *bd)
193 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
194 params->hdr.tag = ATAG_MEM;
195 params->hdr.size = tag_size (tag_mem32);
197 params->u.mem.start = bd->bi_dram[i].start;
198 params->u.mem.size = bd->bi_dram[i].size;
200 params = tag_next (params);
203 #endif /* CONFIG_SETUP_MEMORY_TAGS */
206 static void setup_commandline_tag (bd_t *bd, char *commandline)
213 /* eat leading white space */
214 for (p = commandline; *p == ' '; p++);
216 /* skip non-existent command lines so the kernel will still
217 * use its default command line.
222 params->hdr.tag = ATAG_CMDLINE;
224 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
226 strcpy (params->u.cmdline.cmdline, p);
228 params = tag_next (params);
232 #ifdef CONFIG_INITRD_TAG
233 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
235 /* an ATAG_INITRD node tells the kernel where the compressed
236 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
238 params->hdr.tag = ATAG_INITRD2;
239 params->hdr.size = tag_size (tag_initrd);
241 params->u.initrd.start = initrd_start;
242 params->u.initrd.size = initrd_end - initrd_start;
244 params = tag_next (params);
246 #endif /* CONFIG_INITRD_TAG */
249 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
250 extern ulong calc_fbsize (void);
251 static void setup_videolfb_tag (gd_t *gd)
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 !
257 * We only use it to pass the address and size, the other entries
258 * in the tag_videolfb are not of interest.
260 params->hdr.tag = ATAG_VIDEOLFB;
261 params->hdr.size = tag_size (tag_videolfb);
263 params->u.videolfb.lfb_base = (u32) gd->fb_base;
264 /* Fb size is calculated according to parameters for our panel
266 params->u.videolfb.lfb_size = calc_fbsize();
268 params = tag_next (params);
270 #endif /* CONFIG_VFD || CONFIG_LCD */
272 #ifdef CONFIG_SERIAL_TAG
273 void setup_serial_tag (struct tag **tmp)
275 struct tag *params = *tmp;
276 struct tag_serialnr serialnr;
277 void get_board_serial(struct tag_serialnr *serialnr);
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);
289 #ifdef CONFIG_REVISION_TAG
290 void setup_revision_tag(struct tag **in_params)
293 u32 get_board_rev(void);
295 rev = get_board_rev();
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);
301 #endif /* CONFIG_REVISION_TAG */
304 static void setup_end_tag (bd_t *bd)
306 params->hdr.tag = ATAG_NONE;
307 params->hdr.size = 0;
310 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */