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>
29 #ifdef CONFIG_HAS_DATAFLASH
30 #include <dataflash.h>
33 DECLARE_GLOBAL_DATA_PTR;
36 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
38 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
39 defined (CONFIG_CMDLINE_TAG) || \
40 defined (CONFIG_INITRD_TAG) || \
41 defined (CONFIG_SERIAL_TAG) || \
42 defined (CONFIG_REVISION_TAG) || \
43 defined (CONFIG_VFD) || \
45 static void setup_start_tag (bd_t *bd);
47 # ifdef CONFIG_SETUP_MEMORY_TAGS
48 static void setup_memory_tags (bd_t *bd);
50 static void setup_commandline_tag (bd_t *bd, char *commandline);
53 static void setup_ramdisk_tag (bd_t *bd);
55 # ifdef CONFIG_INITRD_TAG
56 static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
59 static void setup_end_tag (bd_t *bd);
61 # if defined (CONFIG_VFD) || defined (CONFIG_LCD)
62 static void setup_videolfb_tag (gd_t *gd);
66 static struct tag *params;
67 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
69 extern image_header_t header; /* from cmd_bootm.c */
72 void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
73 ulong addr, ulong *len_ptr, int verify)
76 ulong initrd_start, initrd_end;
78 void (*theKernel)(int zero, int arch, uint params);
79 image_header_t *hdr = &header;
82 #ifdef CONFIG_CMDLINE_TAG
83 char *commandline = getenv ("bootargs");
86 theKernel = (void (*)(int, int, uint))image_get_ep (hdr);
89 * Check if there is an initrd image
92 show_boot_progress (9);
94 addr = simple_strtoul (argv[2], NULL, 16);
96 printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
98 /* Copy header so we can blank CRC field for re-calculation */
99 #ifdef CONFIG_HAS_DATAFLASH
100 if (addr_dataflash (addr)) {
101 read_dataflash (addr, image_get_header_size (),
105 memcpy (&header, (char *) addr,
106 image_get_header_size ());
108 if (!image_check_magic (hdr)) {
109 printf ("Bad Magic Number\n");
110 show_boot_progress (-10);
111 do_reset (cmdtp, flag, argc, argv);
114 if (!image_check_hcrc (hdr)) {
115 printf ("Bad Header Checksum\n");
116 show_boot_progress (-11);
117 do_reset (cmdtp, flag, argc, argv);
120 show_boot_progress (10);
122 print_image_hdr (hdr);
124 data = image_get_data (hdr);
125 len = image_get_data_size (hdr);
127 #ifdef CONFIG_HAS_DATAFLASH
128 if (addr_dataflash (addr)) {
129 read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
130 data = CFG_LOAD_ADDR;
135 printf (" Verifying Checksum ... ");
136 if (!image_get_dcrc (hdr)) {
137 printf ("Bad Data CRC\n");
138 show_boot_progress (-12);
139 do_reset (cmdtp, flag, argc, argv);
144 show_boot_progress (11);
146 if (!image_check_os (hdr, IH_OS_LINUX) ||
147 !image_check_arch (hdr, IH_ARCH_ARM) ||
148 !image_check_type (hdr, IH_TYPE_RAMDISK)) {
149 printf ("No Linux ARM Ramdisk Image\n");
150 show_boot_progress (-13);
151 do_reset (cmdtp, flag, argc, argv);
154 #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO)
156 *we need to copy the ramdisk to SRAM to let Linux boot
158 memmove ((void *)image_get_load (hdr), (uchar *)data, len);
159 data = image_get_load (hdr);
160 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
163 * Now check if we have a multifile image
165 } else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) {
166 ulong tail = image_to_cpu (len_ptr[0]) % 4;
169 show_boot_progress (13);
171 /* skip kernel length and terminator */
172 data = (ulong) (&len_ptr[2]);
173 /* skip any additional image length fields */
174 for (i = 1; len_ptr[i]; ++i)
176 /* add kernel length, and align */
177 data += image_to_cpu (len_ptr[0]);
182 len = image_to_cpu (len_ptr[1]);
188 show_boot_progress (14);
195 printf ("No initrd\n");
201 initrd_end = initrd_start + len;
207 show_boot_progress (15);
209 debug ("## Transferring control to Linux (at address %08lx) ...\n",
212 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
213 defined (CONFIG_CMDLINE_TAG) || \
214 defined (CONFIG_INITRD_TAG) || \
215 defined (CONFIG_SERIAL_TAG) || \
216 defined (CONFIG_REVISION_TAG) || \
217 defined (CONFIG_LCD) || \
219 setup_start_tag (bd);
220 #ifdef CONFIG_SERIAL_TAG
221 setup_serial_tag (¶ms);
223 #ifdef CONFIG_REVISION_TAG
224 setup_revision_tag (¶ms);
226 #ifdef CONFIG_SETUP_MEMORY_TAGS
227 setup_memory_tags (bd);
229 #ifdef CONFIG_CMDLINE_TAG
230 setup_commandline_tag (bd, commandline);
232 #ifdef CONFIG_INITRD_TAG
233 if (initrd_start && initrd_end)
234 setup_initrd_tag (bd, initrd_start, initrd_end);
236 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
237 setup_videolfb_tag ((gd_t *) gd);
242 /* we assume that the kernel is in place */
243 printf ("\nStarting kernel ...\n\n");
245 #ifdef CONFIG_USB_DEVICE
247 extern void udc_disconnect (void);
252 cleanup_before_linux ();
254 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
258 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
259 defined (CONFIG_CMDLINE_TAG) || \
260 defined (CONFIG_INITRD_TAG) || \
261 defined (CONFIG_SERIAL_TAG) || \
262 defined (CONFIG_REVISION_TAG) || \
263 defined (CONFIG_LCD) || \
265 static void setup_start_tag (bd_t *bd)
267 params = (struct tag *) bd->bi_boot_params;
269 params->hdr.tag = ATAG_CORE;
270 params->hdr.size = tag_size (tag_core);
272 params->u.core.flags = 0;
273 params->u.core.pagesize = 0;
274 params->u.core.rootdev = 0;
276 params = tag_next (params);
280 #ifdef CONFIG_SETUP_MEMORY_TAGS
281 static void setup_memory_tags (bd_t *bd)
285 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
286 params->hdr.tag = ATAG_MEM;
287 params->hdr.size = tag_size (tag_mem32);
289 params->u.mem.start = bd->bi_dram[i].start;
290 params->u.mem.size = bd->bi_dram[i].size;
292 params = tag_next (params);
295 #endif /* CONFIG_SETUP_MEMORY_TAGS */
298 static void setup_commandline_tag (bd_t *bd, char *commandline)
305 /* eat leading white space */
306 for (p = commandline; *p == ' '; p++);
308 /* skip non-existent command lines so the kernel will still
309 * use its default command line.
314 params->hdr.tag = ATAG_CMDLINE;
316 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
318 strcpy (params->u.cmdline.cmdline, p);
320 params = tag_next (params);
324 #ifdef CONFIG_INITRD_TAG
325 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
327 /* an ATAG_INITRD node tells the kernel where the compressed
328 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
330 params->hdr.tag = ATAG_INITRD2;
331 params->hdr.size = tag_size (tag_initrd);
333 params->u.initrd.start = initrd_start;
334 params->u.initrd.size = initrd_end - initrd_start;
336 params = tag_next (params);
338 #endif /* CONFIG_INITRD_TAG */
341 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
342 extern ulong calc_fbsize (void);
343 static void setup_videolfb_tag (gd_t *gd)
345 /* An ATAG_VIDEOLFB node tells the kernel where and how large
346 * the framebuffer for video was allocated (among other things).
347 * Note that a _physical_ address is passed !
349 * We only use it to pass the address and size, the other entries
350 * in the tag_videolfb are not of interest.
352 params->hdr.tag = ATAG_VIDEOLFB;
353 params->hdr.size = tag_size (tag_videolfb);
355 params->u.videolfb.lfb_base = (u32) gd->fb_base;
356 /* Fb size is calculated according to parameters for our panel
358 params->u.videolfb.lfb_size = calc_fbsize();
360 params = tag_next (params);
362 #endif /* CONFIG_VFD || CONFIG_LCD */
364 #ifdef CONFIG_SERIAL_TAG
365 void setup_serial_tag (struct tag **tmp)
367 struct tag *params = *tmp;
368 struct tag_serialnr serialnr;
369 void get_board_serial(struct tag_serialnr *serialnr);
371 get_board_serial(&serialnr);
372 params->hdr.tag = ATAG_SERIAL;
373 params->hdr.size = tag_size (tag_serialnr);
374 params->u.serialnr.low = serialnr.low;
375 params->u.serialnr.high= serialnr.high;
376 params = tag_next (params);
381 #ifdef CONFIG_REVISION_TAG
382 void setup_revision_tag(struct tag **in_params)
385 u32 get_board_rev(void);
387 rev = get_board_rev();
388 params->hdr.tag = ATAG_REVISION;
389 params->hdr.size = tag_size (tag_revision);
390 params->u.revision.rev = rev;
391 params = tag_next (params);
393 #endif /* CONFIG_REVISION_TAG */
396 static void setup_end_tag (bd_t *bd)
398 params->hdr.tag = ATAG_NONE;
399 params->hdr.size = 0;
402 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */