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) || defined(CONFIG_ARMADILLO)
165 *we need to copy the ramdisk to SRAM to let Linux boot
167 memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
168 data = ntohl(hdr->ih_load);
169 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
172 * Now check if we have a multifile image
174 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
175 ulong tail = ntohl (len_ptr[0]) % 4;
178 show_boot_progress (13);
180 /* skip kernel length and terminator */
181 data = (ulong) (&len_ptr[2]);
182 /* skip any additional image length fields */
183 for (i = 1; len_ptr[i]; ++i)
185 /* add kernel length, and align */
186 data += ntohl (len_ptr[0]);
191 len = ntohl (len_ptr[1]);
197 show_boot_progress (14);
204 printf ("No initrd\n");
210 initrd_end = initrd_start + len;
216 show_boot_progress (15);
218 debug ("## Transferring control to Linux (at address %08lx) ...\n",
221 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
222 defined (CONFIG_CMDLINE_TAG) || \
223 defined (CONFIG_INITRD_TAG) || \
224 defined (CONFIG_SERIAL_TAG) || \
225 defined (CONFIG_REVISION_TAG) || \
226 defined (CONFIG_LCD) || \
228 setup_start_tag (bd);
229 #ifdef CONFIG_SERIAL_TAG
230 setup_serial_tag (¶ms);
232 #ifdef CONFIG_REVISION_TAG
233 setup_revision_tag (¶ms);
235 #ifdef CONFIG_SETUP_MEMORY_TAGS
236 setup_memory_tags (bd);
238 #ifdef CONFIG_CMDLINE_TAG
239 setup_commandline_tag (bd, commandline);
241 #ifdef CONFIG_INITRD_TAG
242 if (initrd_start && initrd_end)
243 setup_initrd_tag (bd, initrd_start, initrd_end);
245 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
246 setup_videolfb_tag ((gd_t *) gd);
251 /* we assume that the kernel is in place */
252 printf ("\nStarting kernel ...\n\n");
254 #ifdef CONFIG_USB_DEVICE
256 extern void udc_disconnect (void);
261 cleanup_before_linux ();
263 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
267 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
268 defined (CONFIG_CMDLINE_TAG) || \
269 defined (CONFIG_INITRD_TAG) || \
270 defined (CONFIG_SERIAL_TAG) || \
271 defined (CONFIG_REVISION_TAG) || \
272 defined (CONFIG_LCD) || \
274 static void setup_start_tag (bd_t *bd)
276 params = (struct tag *) bd->bi_boot_params;
278 params->hdr.tag = ATAG_CORE;
279 params->hdr.size = tag_size (tag_core);
281 params->u.core.flags = 0;
282 params->u.core.pagesize = 0;
283 params->u.core.rootdev = 0;
285 params = tag_next (params);
289 #ifdef CONFIG_SETUP_MEMORY_TAGS
290 static void setup_memory_tags (bd_t *bd)
294 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
295 params->hdr.tag = ATAG_MEM;
296 params->hdr.size = tag_size (tag_mem32);
298 params->u.mem.start = bd->bi_dram[i].start;
299 params->u.mem.size = bd->bi_dram[i].size;
301 params = tag_next (params);
304 #endif /* CONFIG_SETUP_MEMORY_TAGS */
307 static void setup_commandline_tag (bd_t *bd, char *commandline)
314 /* eat leading white space */
315 for (p = commandline; *p == ' '; p++);
317 /* skip non-existent command lines so the kernel will still
318 * use its default command line.
323 params->hdr.tag = ATAG_CMDLINE;
325 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
327 strcpy (params->u.cmdline.cmdline, p);
329 params = tag_next (params);
333 #ifdef CONFIG_INITRD_TAG
334 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
336 /* an ATAG_INITRD node tells the kernel where the compressed
337 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
339 params->hdr.tag = ATAG_INITRD2;
340 params->hdr.size = tag_size (tag_initrd);
342 params->u.initrd.start = initrd_start;
343 params->u.initrd.size = initrd_end - initrd_start;
345 params = tag_next (params);
347 #endif /* CONFIG_INITRD_TAG */
350 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
351 extern ulong calc_fbsize (void);
352 static void setup_videolfb_tag (gd_t *gd)
354 /* An ATAG_VIDEOLFB node tells the kernel where and how large
355 * the framebuffer for video was allocated (among other things).
356 * Note that a _physical_ address is passed !
358 * We only use it to pass the address and size, the other entries
359 * in the tag_videolfb are not of interest.
361 params->hdr.tag = ATAG_VIDEOLFB;
362 params->hdr.size = tag_size (tag_videolfb);
364 params->u.videolfb.lfb_base = (u32) gd->fb_base;
365 /* Fb size is calculated according to parameters for our panel
367 params->u.videolfb.lfb_size = calc_fbsize();
369 params = tag_next (params);
371 #endif /* CONFIG_VFD || CONFIG_LCD */
373 #ifdef CONFIG_SERIAL_TAG
374 void setup_serial_tag (struct tag **tmp)
376 struct tag *params = *tmp;
377 struct tag_serialnr serialnr;
378 void get_board_serial(struct tag_serialnr *serialnr);
380 get_board_serial(&serialnr);
381 params->hdr.tag = ATAG_SERIAL;
382 params->hdr.size = tag_size (tag_serialnr);
383 params->u.serialnr.low = serialnr.low;
384 params->u.serialnr.high= serialnr.high;
385 params = tag_next (params);
390 #ifdef CONFIG_REVISION_TAG
391 void setup_revision_tag(struct tag **in_params)
394 u32 get_board_rev(void);
396 rev = get_board_rev();
397 params->hdr.tag = ATAG_REVISION;
398 params->hdr.size = tag_size (tag_revision);
399 params->u.revision.rev = rev;
400 params = tag_next (params);
402 #endif /* CONFIG_REVISION_TAG */
405 static void setup_end_tag (bd_t *bd)
407 params->hdr.tag = ATAG_NONE;
408 params->hdr.size = 0;
411 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */