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) || defined(CONFIG_ARMADILLO)
173 *we need to copy the ramdisk to SRAM to let Linux boot
175 memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
176 data = ntohl(hdr->ih_load);
177 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
180 * Now check if we have a multifile image
182 } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
183 ulong tail = ntohl (len_ptr[0]) % 4;
186 show_boot_progress (13);
188 /* skip kernel length and terminator */
189 data = (ulong) (&len_ptr[2]);
190 /* skip any additional image length fields */
191 for (i = 1; len_ptr[i]; ++i)
193 /* add kernel length, and align */
194 data += ntohl (len_ptr[0]);
199 len = ntohl (len_ptr[1]);
205 show_boot_progress (14);
212 printf ("No initrd\n");
218 initrd_end = initrd_start + len;
224 show_boot_progress (15);
226 debug ("## Transferring control to Linux (at address %08lx) ...\n",
229 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
230 defined (CONFIG_CMDLINE_TAG) || \
231 defined (CONFIG_INITRD_TAG) || \
232 defined (CONFIG_SERIAL_TAG) || \
233 defined (CONFIG_REVISION_TAG) || \
234 defined (CONFIG_LCD) || \
236 setup_start_tag (bd);
237 #ifdef CONFIG_SERIAL_TAG
238 setup_serial_tag (¶ms);
240 #ifdef CONFIG_REVISION_TAG
241 setup_revision_tag (¶ms);
243 #ifdef CONFIG_SETUP_MEMORY_TAGS
244 setup_memory_tags (bd);
246 #ifdef CONFIG_CMDLINE_TAG
247 setup_commandline_tag (bd, commandline);
249 #ifdef CONFIG_INITRD_TAG
250 if (initrd_start && initrd_end)
251 setup_initrd_tag (bd, initrd_start, initrd_end);
253 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
254 setup_videolfb_tag ((gd_t *) gd);
259 /* we assume that the kernel is in place */
260 printf ("\nStarting kernel ...\n\n");
262 #ifdef CONFIG_USB_DEVICE
264 extern void udc_disconnect (void);
269 cleanup_before_linux ();
271 theKernel (0, machid, bd->bi_boot_params);
275 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
276 defined (CONFIG_CMDLINE_TAG) || \
277 defined (CONFIG_INITRD_TAG) || \
278 defined (CONFIG_SERIAL_TAG) || \
279 defined (CONFIG_REVISION_TAG) || \
280 defined (CONFIG_LCD) || \
282 static void setup_start_tag (bd_t *bd)
284 params = (struct tag *) bd->bi_boot_params;
286 params->hdr.tag = ATAG_CORE;
287 params->hdr.size = tag_size (tag_core);
289 params->u.core.flags = 0;
290 params->u.core.pagesize = 0;
291 params->u.core.rootdev = 0;
293 params = tag_next (params);
297 #ifdef CONFIG_SETUP_MEMORY_TAGS
298 static void setup_memory_tags (bd_t *bd)
302 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
303 params->hdr.tag = ATAG_MEM;
304 params->hdr.size = tag_size (tag_mem32);
306 params->u.mem.start = bd->bi_dram[i].start;
307 params->u.mem.size = bd->bi_dram[i].size;
309 params = tag_next (params);
312 #endif /* CONFIG_SETUP_MEMORY_TAGS */
315 static void setup_commandline_tag (bd_t *bd, char *commandline)
322 /* eat leading white space */
323 for (p = commandline; *p == ' '; p++);
325 /* skip non-existent command lines so the kernel will still
326 * use its default command line.
331 params->hdr.tag = ATAG_CMDLINE;
333 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
335 strcpy (params->u.cmdline.cmdline, p);
337 params = tag_next (params);
341 #ifdef CONFIG_INITRD_TAG
342 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
344 /* an ATAG_INITRD node tells the kernel where the compressed
345 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
347 params->hdr.tag = ATAG_INITRD2;
348 params->hdr.size = tag_size (tag_initrd);
350 params->u.initrd.start = initrd_start;
351 params->u.initrd.size = initrd_end - initrd_start;
353 params = tag_next (params);
355 #endif /* CONFIG_INITRD_TAG */
358 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
359 extern ulong calc_fbsize (void);
360 static void setup_videolfb_tag (gd_t *gd)
362 /* An ATAG_VIDEOLFB node tells the kernel where and how large
363 * the framebuffer for video was allocated (among other things).
364 * Note that a _physical_ address is passed !
366 * We only use it to pass the address and size, the other entries
367 * in the tag_videolfb are not of interest.
369 params->hdr.tag = ATAG_VIDEOLFB;
370 params->hdr.size = tag_size (tag_videolfb);
372 params->u.videolfb.lfb_base = (u32) gd->fb_base;
373 /* Fb size is calculated according to parameters for our panel
375 params->u.videolfb.lfb_size = calc_fbsize();
377 params = tag_next (params);
379 #endif /* CONFIG_VFD || CONFIG_LCD */
381 #ifdef CONFIG_SERIAL_TAG
382 void setup_serial_tag (struct tag **tmp)
384 struct tag *params = *tmp;
385 struct tag_serialnr serialnr;
386 void get_board_serial(struct tag_serialnr *serialnr);
388 get_board_serial(&serialnr);
389 params->hdr.tag = ATAG_SERIAL;
390 params->hdr.size = tag_size (tag_serialnr);
391 params->u.serialnr.low = serialnr.low;
392 params->u.serialnr.high= serialnr.high;
393 params = tag_next (params);
398 #ifdef CONFIG_REVISION_TAG
399 void setup_revision_tag(struct tag **in_params)
402 u32 get_board_rev(void);
404 rev = get_board_rev();
405 params->hdr.tag = ATAG_REVISION;
406 params->hdr.size = tag_size (tag_revision);
407 params->u.revision.rev = rev;
408 params = tag_next (params);
410 #endif /* CONFIG_REVISION_TAG */
413 static void setup_end_tag (bd_t *bd)
415 params->hdr.tag = ATAG_NONE;
416 params->hdr.size = 0;
419 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */