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);
47 static void setup_ramdisk_tag (bd_t *bd);
49 # ifdef CONFIG_INITRD_TAG
50 static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
53 static void setup_end_tag (bd_t *bd);
55 # if defined (CONFIG_VFD) || defined (CONFIG_LCD)
56 static void setup_videolfb_tag (gd_t *gd);
60 static struct tag *params;
61 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
63 void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
64 image_header_t *hdr, int verify)
66 ulong initrd_start, initrd_end;
67 void (*theKernel)(int zero, int arch, uint params);
70 #ifdef CONFIG_CMDLINE_TAG
71 char *commandline = getenv ("bootargs");
74 theKernel = (void (*)(int, int, uint))image_get_ep (hdr);
76 get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
77 IH_ARCH_ARM, &initrd_start, &initrd_end);
79 show_boot_progress (15);
81 debug ("## Transferring control to Linux (at address %08lx) ...\n",
84 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
85 defined (CONFIG_CMDLINE_TAG) || \
86 defined (CONFIG_INITRD_TAG) || \
87 defined (CONFIG_SERIAL_TAG) || \
88 defined (CONFIG_REVISION_TAG) || \
89 defined (CONFIG_LCD) || \
92 #ifdef CONFIG_SERIAL_TAG
93 setup_serial_tag (¶ms);
95 #ifdef CONFIG_REVISION_TAG
96 setup_revision_tag (¶ms);
98 #ifdef CONFIG_SETUP_MEMORY_TAGS
99 setup_memory_tags (bd);
101 #ifdef CONFIG_CMDLINE_TAG
102 setup_commandline_tag (bd, commandline);
104 #ifdef CONFIG_INITRD_TAG
105 if (initrd_start && initrd_end)
106 setup_initrd_tag (bd, initrd_start, initrd_end);
108 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
109 setup_videolfb_tag ((gd_t *) gd);
114 /* we assume that the kernel is in place */
115 printf ("\nStarting kernel ...\n\n");
117 #ifdef CONFIG_USB_DEVICE
119 extern void udc_disconnect (void);
124 cleanup_before_linux ();
126 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
130 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
131 defined (CONFIG_CMDLINE_TAG) || \
132 defined (CONFIG_INITRD_TAG) || \
133 defined (CONFIG_SERIAL_TAG) || \
134 defined (CONFIG_REVISION_TAG) || \
135 defined (CONFIG_LCD) || \
137 static void setup_start_tag (bd_t *bd)
139 params = (struct tag *) bd->bi_boot_params;
141 params->hdr.tag = ATAG_CORE;
142 params->hdr.size = tag_size (tag_core);
144 params->u.core.flags = 0;
145 params->u.core.pagesize = 0;
146 params->u.core.rootdev = 0;
148 params = tag_next (params);
152 #ifdef CONFIG_SETUP_MEMORY_TAGS
153 static void setup_memory_tags (bd_t *bd)
157 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
158 params->hdr.tag = ATAG_MEM;
159 params->hdr.size = tag_size (tag_mem32);
161 params->u.mem.start = bd->bi_dram[i].start;
162 params->u.mem.size = bd->bi_dram[i].size;
164 params = tag_next (params);
167 #endif /* CONFIG_SETUP_MEMORY_TAGS */
170 static void setup_commandline_tag (bd_t *bd, char *commandline)
177 /* eat leading white space */
178 for (p = commandline; *p == ' '; p++);
180 /* skip non-existent command lines so the kernel will still
181 * use its default command line.
186 params->hdr.tag = ATAG_CMDLINE;
188 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
190 strcpy (params->u.cmdline.cmdline, p);
192 params = tag_next (params);
196 #ifdef CONFIG_INITRD_TAG
197 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
199 /* an ATAG_INITRD node tells the kernel where the compressed
200 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
202 params->hdr.tag = ATAG_INITRD2;
203 params->hdr.size = tag_size (tag_initrd);
205 params->u.initrd.start = initrd_start;
206 params->u.initrd.size = initrd_end - initrd_start;
208 params = tag_next (params);
210 #endif /* CONFIG_INITRD_TAG */
213 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
214 extern ulong calc_fbsize (void);
215 static void setup_videolfb_tag (gd_t *gd)
217 /* An ATAG_VIDEOLFB node tells the kernel where and how large
218 * the framebuffer for video was allocated (among other things).
219 * Note that a _physical_ address is passed !
221 * We only use it to pass the address and size, the other entries
222 * in the tag_videolfb are not of interest.
224 params->hdr.tag = ATAG_VIDEOLFB;
225 params->hdr.size = tag_size (tag_videolfb);
227 params->u.videolfb.lfb_base = (u32) gd->fb_base;
228 /* Fb size is calculated according to parameters for our panel
230 params->u.videolfb.lfb_size = calc_fbsize();
232 params = tag_next (params);
234 #endif /* CONFIG_VFD || CONFIG_LCD */
236 #ifdef CONFIG_SERIAL_TAG
237 void setup_serial_tag (struct tag **tmp)
239 struct tag *params = *tmp;
240 struct tag_serialnr serialnr;
241 void get_board_serial(struct tag_serialnr *serialnr);
243 get_board_serial(&serialnr);
244 params->hdr.tag = ATAG_SERIAL;
245 params->hdr.size = tag_size (tag_serialnr);
246 params->u.serialnr.low = serialnr.low;
247 params->u.serialnr.high= serialnr.high;
248 params = tag_next (params);
253 #ifdef CONFIG_REVISION_TAG
254 void setup_revision_tag(struct tag **in_params)
257 u32 get_board_rev(void);
259 rev = get_board_rev();
260 params->hdr.tag = ATAG_REVISION;
261 params->hdr.size = tag_size (tag_revision);
262 params->u.revision.rev = rev;
263 params = tag_next (params);
265 #endif /* CONFIG_REVISION_TAG */
268 static void setup_end_tag (bd_t *bd)
270 params->hdr.tag = ATAG_NONE;
271 params->hdr.size = 0;
274 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */