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;
81 int machid = bd->bi_arch_number;
84 #ifdef CONFIG_CMDLINE_TAG
85 char *commandline = getenv ("bootargs");
88 theKernel = (void (*)(int, int, uint))ntohl(hdr->ih_ep);
90 s = getenv ("machid");
92 machid = simple_strtoul (s, NULL, 16);
93 printf ("Using machid 0x%x from environment\n", machid);
97 * Check if there is an initrd image
100 show_boot_progress (9);
102 addr = simple_strtoul (argv[2], NULL, 16);
104 printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
106 /* Copy header so we can blank CRC field for re-calculation */
107 #ifdef CONFIG_HAS_DATAFLASH
108 if (addr_dataflash (addr)) {
109 read_dataflash (addr, sizeof (image_header_t),
113 memcpy (&header, (char *) addr,
114 sizeof (image_header_t));
116 if (ntohl (hdr->ih_magic) != IH_MAGIC) {
117 printf ("Bad Magic Number\n");
118 show_boot_progress (-10);
119 do_reset (cmdtp, flag, argc, argv);
122 data = (ulong) & header;
123 len = sizeof (image_header_t);
125 checksum = ntohl (hdr->ih_hcrc);
128 if (crc32 (0, (unsigned char *) data, len) != checksum) {
129 printf ("Bad Header Checksum\n");
130 show_boot_progress (-11);
131 do_reset (cmdtp, flag, argc, argv);
134 show_boot_progress (10);
136 print_image_hdr (hdr);
138 data = addr + sizeof (image_header_t);
139 len = ntohl (hdr->ih_size);
141 #ifdef CONFIG_HAS_DATAFLASH
142 if (addr_dataflash (addr)) {
143 read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
144 data = CFG_LOAD_ADDR;
151 printf (" Verifying Checksum ... ");
152 csum = crc32 (0, (unsigned char *) data, len);
153 if (csum != ntohl (hdr->ih_dcrc)) {
154 printf ("Bad Data CRC\n");
155 show_boot_progress (-12);
156 do_reset (cmdtp, flag, argc, argv);
161 show_boot_progress (11);
163 if ((hdr->ih_os != IH_OS_LINUX) ||
164 (hdr->ih_arch != IH_CPU_ARM) ||
165 (hdr->ih_type != IH_TYPE_RAMDISK)) {
166 printf ("No Linux ARM Ramdisk Image\n");
167 show_boot_progress (-13);
168 do_reset (cmdtp, flag, argc, argv);
171 #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || \
172 defined(CONFIG_ARMADILLO) || defined(CONFIG_M501SK)
174 *we need to copy the ramdisk to SRAM to let Linux boot
176 memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
177 data = ntohl(hdr->ih_load);
178 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
181 * Now check if we have a multifile image
183 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
184 ulong tail = ntohl (len_ptr[0]) % 4;
187 show_boot_progress (13);
189 /* skip kernel length and terminator */
190 data = (ulong) (&len_ptr[2]);
191 /* skip any additional image length fields */
192 for (i = 1; len_ptr[i]; ++i)
194 /* add kernel length, and align */
195 data += ntohl (len_ptr[0]);
200 len = ntohl (len_ptr[1]);
206 show_boot_progress (14);
213 printf ("No initrd\n");
219 initrd_end = initrd_start + len;
225 show_boot_progress (15);
227 debug ("## Transferring control to Linux (at address %08lx) ...\n",
230 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
231 defined (CONFIG_CMDLINE_TAG) || \
232 defined (CONFIG_INITRD_TAG) || \
233 defined (CONFIG_SERIAL_TAG) || \
234 defined (CONFIG_REVISION_TAG) || \
235 defined (CONFIG_LCD) || \
237 setup_start_tag (bd);
238 #ifdef CONFIG_SERIAL_TAG
239 setup_serial_tag (¶ms);
241 #ifdef CONFIG_REVISION_TAG
242 setup_revision_tag (¶ms);
244 #ifdef CONFIG_SETUP_MEMORY_TAGS
245 setup_memory_tags (bd);
247 #ifdef CONFIG_CMDLINE_TAG
248 setup_commandline_tag (bd, commandline);
250 #ifdef CONFIG_INITRD_TAG
251 if (initrd_start && initrd_end)
252 setup_initrd_tag (bd, initrd_start, initrd_end);
254 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
255 setup_videolfb_tag ((gd_t *) gd);
260 /* we assume that the kernel is in place */
261 printf ("\nStarting kernel ...\n\n");
263 #ifdef CONFIG_USB_DEVICE
265 extern void udc_disconnect (void);
270 cleanup_before_linux ();
272 theKernel (0, machid, bd->bi_boot_params);
276 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
277 defined (CONFIG_CMDLINE_TAG) || \
278 defined (CONFIG_INITRD_TAG) || \
279 defined (CONFIG_SERIAL_TAG) || \
280 defined (CONFIG_REVISION_TAG) || \
281 defined (CONFIG_LCD) || \
283 static void setup_start_tag (bd_t *bd)
285 params = (struct tag *) bd->bi_boot_params;
287 params->hdr.tag = ATAG_CORE;
288 params->hdr.size = tag_size (tag_core);
290 params->u.core.flags = 0;
291 params->u.core.pagesize = 0;
292 params->u.core.rootdev = 0;
294 params = tag_next (params);
298 #ifdef CONFIG_SETUP_MEMORY_TAGS
299 static void setup_memory_tags (bd_t *bd)
303 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
304 params->hdr.tag = ATAG_MEM;
305 params->hdr.size = tag_size (tag_mem32);
307 params->u.mem.start = bd->bi_dram[i].start;
308 params->u.mem.size = bd->bi_dram[i].size;
310 params = tag_next (params);
313 #endif /* CONFIG_SETUP_MEMORY_TAGS */
316 static void setup_commandline_tag (bd_t *bd, char *commandline)
323 /* eat leading white space */
324 for (p = commandline; *p == ' '; p++);
326 /* skip non-existent command lines so the kernel will still
327 * use its default command line.
332 params->hdr.tag = ATAG_CMDLINE;
334 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
336 strcpy (params->u.cmdline.cmdline, p);
338 params = tag_next (params);
342 #ifdef CONFIG_INITRD_TAG
343 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
345 /* an ATAG_INITRD node tells the kernel where the compressed
346 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
348 params->hdr.tag = ATAG_INITRD2;
349 params->hdr.size = tag_size (tag_initrd);
351 params->u.initrd.start = initrd_start;
352 params->u.initrd.size = initrd_end - initrd_start;
354 params = tag_next (params);
356 #endif /* CONFIG_INITRD_TAG */
359 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
360 extern ulong calc_fbsize (void);
361 static void setup_videolfb_tag (gd_t *gd)
363 /* An ATAG_VIDEOLFB node tells the kernel where and how large
364 * the framebuffer for video was allocated (among other things).
365 * Note that a _physical_ address is passed !
367 * We only use it to pass the address and size, the other entries
368 * in the tag_videolfb are not of interest.
370 params->hdr.tag = ATAG_VIDEOLFB;
371 params->hdr.size = tag_size (tag_videolfb);
373 params->u.videolfb.lfb_base = (u32) gd->fb_base;
374 /* Fb size is calculated according to parameters for our panel
376 params->u.videolfb.lfb_size = calc_fbsize();
378 params = tag_next (params);
380 #endif /* CONFIG_VFD || CONFIG_LCD */
382 #ifdef CONFIG_SERIAL_TAG
383 void setup_serial_tag (struct tag **tmp)
385 struct tag *params = *tmp;
386 struct tag_serialnr serialnr;
387 void get_board_serial(struct tag_serialnr *serialnr);
389 get_board_serial(&serialnr);
390 params->hdr.tag = ATAG_SERIAL;
391 params->hdr.size = tag_size (tag_serialnr);
392 params->u.serialnr.low = serialnr.low;
393 params->u.serialnr.high= serialnr.high;
394 params = tag_next (params);
399 #ifdef CONFIG_REVISION_TAG
400 void setup_revision_tag(struct tag **in_params)
403 u32 get_board_rev(void);
405 rev = get_board_rev();
406 params->hdr.tag = ATAG_REVISION;
407 params->hdr.size = tag_size (tag_revision);
408 params->u.revision.rev = rev;
409 params = tag_next (params);
411 #endif /* CONFIG_REVISION_TAG */
414 static void setup_end_tag (bd_t *bd)
416 params->hdr.tag = ATAG_NONE;
417 params->hdr.size = 0;
420 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */