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)
75 ulong len = 0, checksum;
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))ntohl(hdr->ih_ep);
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, sizeof (image_header_t),
105 memcpy (&header, (char *) addr,
106 sizeof (image_header_t));
108 if (ntohl (hdr->ih_magic) != IH_MAGIC) {
109 printf ("Bad Magic Number\n");
110 show_boot_progress (-10);
111 do_reset (cmdtp, flag, argc, argv);
114 data = (ulong) & header;
115 len = sizeof (image_header_t);
117 checksum = ntohl (hdr->ih_hcrc);
120 if (crc32 (0, (unsigned char *) data, len) != checksum) {
121 printf ("Bad Header Checksum\n");
122 show_boot_progress (-11);
123 do_reset (cmdtp, flag, argc, argv);
126 show_boot_progress (10);
128 print_image_hdr (hdr);
130 data = addr + sizeof (image_header_t);
131 len = ntohl (hdr->ih_size);
133 #ifdef CONFIG_HAS_DATAFLASH
134 if (addr_dataflash (addr)) {
135 read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
136 data = CFG_LOAD_ADDR;
143 printf (" Verifying Checksum ... ");
144 csum = crc32 (0, (unsigned char *) data, len);
145 if (csum != ntohl (hdr->ih_dcrc)) {
146 printf ("Bad Data CRC\n");
147 show_boot_progress (-12);
148 do_reset (cmdtp, flag, argc, argv);
153 show_boot_progress (11);
155 if ((hdr->ih_os != IH_OS_LINUX) ||
156 (hdr->ih_arch != IH_CPU_ARM) ||
157 (hdr->ih_type != IH_TYPE_RAMDISK)) {
158 printf ("No Linux ARM Ramdisk Image\n");
159 show_boot_progress (-13);
160 do_reset (cmdtp, flag, argc, argv);
163 #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || \
164 defined(CONFIG_ARMADILLO) || defined(CONFIG_M501SK)
166 *we need to copy the ramdisk to SRAM to let Linux boot
168 memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
169 data = ntohl(hdr->ih_load);
170 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
173 * Now check if we have a multifile image
175 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
176 ulong tail = ntohl (len_ptr[0]) % 4;
179 show_boot_progress (13);
181 /* skip kernel length and terminator */
182 data = (ulong) (&len_ptr[2]);
183 /* skip any additional image length fields */
184 for (i = 1; len_ptr[i]; ++i)
186 /* add kernel length, and align */
187 data += ntohl (len_ptr[0]);
192 len = ntohl (len_ptr[1]);
198 show_boot_progress (14);
205 printf ("No initrd\n");
211 initrd_end = initrd_start + len;
217 show_boot_progress (15);
219 debug ("## Transferring control to Linux (at address %08lx) ...\n",
222 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
223 defined (CONFIG_CMDLINE_TAG) || \
224 defined (CONFIG_INITRD_TAG) || \
225 defined (CONFIG_SERIAL_TAG) || \
226 defined (CONFIG_REVISION_TAG) || \
227 defined (CONFIG_LCD) || \
229 setup_start_tag (bd);
230 #ifdef CONFIG_SERIAL_TAG
231 setup_serial_tag (¶ms);
233 #ifdef CONFIG_REVISION_TAG
234 setup_revision_tag (¶ms);
236 #ifdef CONFIG_SETUP_MEMORY_TAGS
237 setup_memory_tags (bd);
239 #ifdef CONFIG_CMDLINE_TAG
240 setup_commandline_tag (bd, commandline);
242 #ifdef CONFIG_INITRD_TAG
243 if (initrd_start && initrd_end)
244 setup_initrd_tag (bd, initrd_start, initrd_end);
246 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
247 setup_videolfb_tag ((gd_t *) gd);
252 /* we assume that the kernel is in place */
253 printf ("\nStarting kernel ...\n\n");
255 #ifdef CONFIG_USB_DEVICE
257 extern void udc_disconnect (void);
262 cleanup_before_linux ();
264 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
268 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
269 defined (CONFIG_CMDLINE_TAG) || \
270 defined (CONFIG_INITRD_TAG) || \
271 defined (CONFIG_SERIAL_TAG) || \
272 defined (CONFIG_REVISION_TAG) || \
273 defined (CONFIG_LCD) || \
275 static void setup_start_tag (bd_t *bd)
277 params = (struct tag *) bd->bi_boot_params;
279 params->hdr.tag = ATAG_CORE;
280 params->hdr.size = tag_size (tag_core);
282 params->u.core.flags = 0;
283 params->u.core.pagesize = 0;
284 params->u.core.rootdev = 0;
286 params = tag_next (params);
290 #ifdef CONFIG_SETUP_MEMORY_TAGS
291 static void setup_memory_tags (bd_t *bd)
295 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
296 params->hdr.tag = ATAG_MEM;
297 params->hdr.size = tag_size (tag_mem32);
299 params->u.mem.start = bd->bi_dram[i].start;
300 params->u.mem.size = bd->bi_dram[i].size;
302 params = tag_next (params);
305 #endif /* CONFIG_SETUP_MEMORY_TAGS */
308 static void setup_commandline_tag (bd_t *bd, char *commandline)
315 /* eat leading white space */
316 for (p = commandline; *p == ' '; p++);
318 /* skip non-existent command lines so the kernel will still
319 * use its default command line.
324 params->hdr.tag = ATAG_CMDLINE;
326 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
328 strcpy (params->u.cmdline.cmdline, p);
330 params = tag_next (params);
334 #ifdef CONFIG_INITRD_TAG
335 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
337 /* an ATAG_INITRD node tells the kernel where the compressed
338 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
340 params->hdr.tag = ATAG_INITRD2;
341 params->hdr.size = tag_size (tag_initrd);
343 params->u.initrd.start = initrd_start;
344 params->u.initrd.size = initrd_end - initrd_start;
346 params = tag_next (params);
348 #endif /* CONFIG_INITRD_TAG */
351 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
352 extern ulong calc_fbsize (void);
353 static void setup_videolfb_tag (gd_t *gd)
355 /* An ATAG_VIDEOLFB node tells the kernel where and how large
356 * the framebuffer for video was allocated (among other things).
357 * Note that a _physical_ address is passed !
359 * We only use it to pass the address and size, the other entries
360 * in the tag_videolfb are not of interest.
362 params->hdr.tag = ATAG_VIDEOLFB;
363 params->hdr.size = tag_size (tag_videolfb);
365 params->u.videolfb.lfb_base = (u32) gd->fb_base;
366 /* Fb size is calculated according to parameters for our panel
368 params->u.videolfb.lfb_size = calc_fbsize();
370 params = tag_next (params);
372 #endif /* CONFIG_VFD || CONFIG_LCD */
374 #ifdef CONFIG_SERIAL_TAG
375 void setup_serial_tag (struct tag **tmp)
377 struct tag *params = *tmp;
378 struct tag_serialnr serialnr;
379 void get_board_serial(struct tag_serialnr *serialnr);
381 get_board_serial(&serialnr);
382 params->hdr.tag = ATAG_SERIAL;
383 params->hdr.size = tag_size (tag_serialnr);
384 params->u.serialnr.low = serialnr.low;
385 params->u.serialnr.high= serialnr.high;
386 params = tag_next (params);
391 #ifdef CONFIG_REVISION_TAG
392 void setup_revision_tag(struct tag **in_params)
395 u32 get_board_rev(void);
397 rev = get_board_rev();
398 params->hdr.tag = ATAG_REVISION;
399 params->hdr.size = tag_size (tag_revision);
400 params->u.revision.rev = rev;
401 params = tag_next (params);
403 #endif /* CONFIG_REVISION_TAG */
406 static void setup_end_tag (bd_t *bd)
408 params->hdr.tag = ATAG_NONE;
409 params->hdr.size = 0;
412 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */