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 #ifdef CONFIG_SHOW_BOOT_PROGRESS
70 # include <status_led.h>
71 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
73 # define SHOW_BOOT_PROGRESS(arg)
76 extern image_header_t header; /* from cmd_bootm.c */
79 void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
80 ulong addr, ulong *len_ptr, int verify)
82 ulong len = 0, checksum;
83 ulong initrd_start, initrd_end;
85 void (*theKernel)(int zero, int arch, uint params);
86 image_header_t *hdr = &header;
89 #ifdef CONFIG_CMDLINE_TAG
90 char *commandline = getenv ("bootargs");
93 theKernel = (void (*)(int, int, uint))ntohl(hdr->ih_ep);
96 * Check if there is an initrd image
99 SHOW_BOOT_PROGRESS (9);
101 addr = simple_strtoul (argv[2], NULL, 16);
103 printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
105 /* Copy header so we can blank CRC field for re-calculation */
106 #ifdef CONFIG_HAS_DATAFLASH
107 if (addr_dataflash (addr)) {
108 read_dataflash (addr, sizeof (image_header_t),
112 memcpy (&header, (char *) addr,
113 sizeof (image_header_t));
115 if (ntohl (hdr->ih_magic) != IH_MAGIC) {
116 printf ("Bad Magic Number\n");
117 SHOW_BOOT_PROGRESS (-10);
118 do_reset (cmdtp, flag, argc, argv);
121 data = (ulong) & header;
122 len = sizeof (image_header_t);
124 checksum = ntohl (hdr->ih_hcrc);
127 if (crc32 (0, (unsigned char *) data, len) != checksum) {
128 printf ("Bad Header Checksum\n");
129 SHOW_BOOT_PROGRESS (-11);
130 do_reset (cmdtp, flag, argc, argv);
133 SHOW_BOOT_PROGRESS (10);
135 print_image_hdr (hdr);
137 data = addr + sizeof (image_header_t);
138 len = ntohl (hdr->ih_size);
140 #ifdef CONFIG_HAS_DATAFLASH
141 if (addr_dataflash (addr)) {
142 read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
143 data = CFG_LOAD_ADDR;
150 printf (" Verifying Checksum ... ");
151 csum = crc32 (0, (unsigned char *) data, len);
152 if (csum != ntohl (hdr->ih_dcrc)) {
153 printf ("Bad Data CRC\n");
154 SHOW_BOOT_PROGRESS (-12);
155 do_reset (cmdtp, flag, argc, argv);
160 SHOW_BOOT_PROGRESS (11);
162 if ((hdr->ih_os != IH_OS_LINUX) ||
163 (hdr->ih_arch != IH_CPU_ARM) ||
164 (hdr->ih_type != IH_TYPE_RAMDISK)) {
165 printf ("No Linux ARM Ramdisk Image\n");
166 SHOW_BOOT_PROGRESS (-13);
167 do_reset (cmdtp, flag, argc, argv);
170 #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO)
172 *we need to copy the ramdisk to SRAM to let Linux boot
174 memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
175 data = ntohl(hdr->ih_load);
176 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
179 * Now check if we have a multifile image
181 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
182 ulong tail = ntohl (len_ptr[0]) % 4;
185 SHOW_BOOT_PROGRESS (13);
187 /* skip kernel length and terminator */
188 data = (ulong) (&len_ptr[2]);
189 /* skip any additional image length fields */
190 for (i = 1; len_ptr[i]; ++i)
192 /* add kernel length, and align */
193 data += ntohl (len_ptr[0]);
198 len = ntohl (len_ptr[1]);
204 SHOW_BOOT_PROGRESS (14);
211 printf ("No initrd\n");
217 initrd_end = initrd_start + len;
223 SHOW_BOOT_PROGRESS (15);
225 debug ("## Transferring control to Linux (at address %08lx) ...\n",
228 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
229 defined (CONFIG_CMDLINE_TAG) || \
230 defined (CONFIG_INITRD_TAG) || \
231 defined (CONFIG_SERIAL_TAG) || \
232 defined (CONFIG_REVISION_TAG) || \
233 defined (CONFIG_LCD) || \
235 setup_start_tag (bd);
236 #ifdef CONFIG_SERIAL_TAG
237 setup_serial_tag (¶ms);
239 #ifdef CONFIG_REVISION_TAG
240 setup_revision_tag (¶ms);
242 #ifdef CONFIG_SETUP_MEMORY_TAGS
243 setup_memory_tags (bd);
245 #ifdef CONFIG_CMDLINE_TAG
246 setup_commandline_tag (bd, commandline);
248 #ifdef CONFIG_INITRD_TAG
249 if (initrd_start && initrd_end)
250 setup_initrd_tag (bd, initrd_start, initrd_end);
252 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
253 setup_videolfb_tag ((gd_t *) gd);
258 /* we assume that the kernel is in place */
259 printf ("\nStarting kernel ...\n\n");
261 #ifdef CONFIG_USB_DEVICE
263 extern void udc_disconnect (void);
268 cleanup_before_linux ();
270 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
274 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
275 defined (CONFIG_CMDLINE_TAG) || \
276 defined (CONFIG_INITRD_TAG) || \
277 defined (CONFIG_SERIAL_TAG) || \
278 defined (CONFIG_REVISION_TAG) || \
279 defined (CONFIG_LCD) || \
281 static void setup_start_tag (bd_t *bd)
283 params = (struct tag *) bd->bi_boot_params;
285 params->hdr.tag = ATAG_CORE;
286 params->hdr.size = tag_size (tag_core);
288 params->u.core.flags = 0;
289 params->u.core.pagesize = 0;
290 params->u.core.rootdev = 0;
292 params = tag_next (params);
296 #ifdef CONFIG_SETUP_MEMORY_TAGS
297 static void setup_memory_tags (bd_t *bd)
301 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
302 params->hdr.tag = ATAG_MEM;
303 params->hdr.size = tag_size (tag_mem32);
305 params->u.mem.start = bd->bi_dram[i].start;
306 params->u.mem.size = bd->bi_dram[i].size;
308 params = tag_next (params);
311 #endif /* CONFIG_SETUP_MEMORY_TAGS */
314 static void setup_commandline_tag (bd_t *bd, char *commandline)
321 /* eat leading white space */
322 for (p = commandline; *p == ' '; p++);
324 /* skip non-existent command lines so the kernel will still
325 * use its default command line.
330 params->hdr.tag = ATAG_CMDLINE;
332 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
334 strcpy (params->u.cmdline.cmdline, p);
336 params = tag_next (params);
340 #ifdef CONFIG_INITRD_TAG
341 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
343 /* an ATAG_INITRD node tells the kernel where the compressed
344 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
346 params->hdr.tag = ATAG_INITRD2;
347 params->hdr.size = tag_size (tag_initrd);
349 params->u.initrd.start = initrd_start;
350 params->u.initrd.size = initrd_end - initrd_start;
352 params = tag_next (params);
354 #endif /* CONFIG_INITRD_TAG */
357 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
358 extern ulong calc_fbsize (void);
359 static void setup_videolfb_tag (gd_t *gd)
361 /* An ATAG_VIDEOLFB node tells the kernel where and how large
362 * the framebuffer for video was allocated (among other things).
363 * Note that a _physical_ address is passed !
365 * We only use it to pass the address and size, the other entries
366 * in the tag_videolfb are not of interest.
368 params->hdr.tag = ATAG_VIDEOLFB;
369 params->hdr.size = tag_size (tag_videolfb);
371 params->u.videolfb.lfb_base = (u32) gd->fb_base;
372 /* Fb size is calculated according to parameters for our panel
374 params->u.videolfb.lfb_size = calc_fbsize();
376 params = tag_next (params);
378 #endif /* CONFIG_VFD || CONFIG_LCD */
380 #ifdef CONFIG_SERIAL_TAG
381 void setup_serial_tag (struct tag **tmp)
383 struct tag *params = *tmp;
384 struct tag_serialnr serialnr;
385 void get_board_serial(struct tag_serialnr *serialnr);
387 get_board_serial(&serialnr);
388 params->hdr.tag = ATAG_SERIAL;
389 params->hdr.size = tag_size (tag_serialnr);
390 params->u.serialnr.low = serialnr.low;
391 params->u.serialnr.high= serialnr.high;
392 params = tag_next (params);
397 #ifdef CONFIG_REVISION_TAG
398 void setup_revision_tag(struct tag **in_params)
401 u32 get_board_rev(void);
403 rev = get_board_rev();
404 params->hdr.tag = ATAG_REVISION;
405 params->hdr.size = tag_size (tag_revision);
406 params->u.revision.rev = rev;
407 params = tag_next (params);
409 #endif /* CONFIG_REVISION_TAG */
412 static void setup_end_tag (bd_t *bd)
414 params->hdr.tag = ATAG_NONE;
415 params->hdr.size = 0;
418 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */