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 void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
70 image_header_t *hdr, int verify)
73 ulong rd_data, rd_len = 0;
74 ulong initrd_start, initrd_end;
75 image_header_t *rd_hdr;
76 void (*theKernel)(int zero, int arch, uint params);
79 #ifdef CONFIG_CMDLINE_TAG
80 char *commandline = getenv ("bootargs");
83 theKernel = (void (*)(int, int, uint))image_get_ep (hdr);
86 * Check if there is an initrd image
89 show_boot_progress (9);
91 rd_addr = simple_strtoul (argv[2], NULL, 16);
92 printf ("## Loading Ramdisk Image at %08lx ...\n", rd_addr);
94 /* Copy header so we can blank CRC field for re-calculation */
95 #ifdef CONFIG_HAS_DATAFLASH
96 if (addr_dataflash (rd_addr)) {
97 rd_hdr = (image_header_t *)CFG_LOAD_ADDR;
98 read_dataflash (rd_addr, image_get_header_size (),
102 rd_hdr = (image_header_t *)rd_addr;
104 if (!image_check_magic (rd_hdr)) {
105 printf ("Bad Magic Number\n");
106 show_boot_progress (-10);
107 do_reset (cmdtp, flag, argc, argv);
110 if (!image_check_hcrc (rd_hdr)) {
111 printf ("Bad Header Checksum\n");
112 show_boot_progress (-11);
113 do_reset (cmdtp, flag, argc, argv);
116 show_boot_progress (10);
118 print_image_hdr (rd_hdr);
120 rd_data = image_get_data (rd_hdr);
121 rd_len = image_get_data_size (rd_hdr);
123 #ifdef CONFIG_HAS_DATAFLASH
124 if (addr_dataflash (rd_addr))
125 read_dataflash (rd_addr + image_get_header_size (),
126 rd_len, (char *)rd_data);
130 printf (" Verifying Checksum ... ");
131 if (!image_get_dcrc (rd_hdr)) {
132 printf ("Bad Data CRC\n");
133 show_boot_progress (-12);
134 do_reset (cmdtp, flag, argc, argv);
139 show_boot_progress (11);
141 if (!image_check_os (rd_hdr, IH_OS_LINUX) ||
142 !image_check_arch (rd_hdr, IH_ARCH_ARM) ||
143 !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) {
144 printf ("No Linux ARM Ramdisk Image\n");
145 show_boot_progress (-13);
146 do_reset (cmdtp, flag, argc, argv);
149 #if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO)
151 *we need to copy the ramdisk to SRAM to let Linux boot
153 memmove ((void *)image_get_load (rd_hdr), (uchar *)rd_data, rd_len);
154 rd_data = image_get_load (rd_hdr);
155 #endif /* CONFIG_B2 || CONFIG_EVB4510 */
158 * Now check if we have a multifile image
160 } else if (image_check_type (hdr, IH_TYPE_MULTI)) {
162 * Get second entry data start address and len
164 show_boot_progress (13);
165 image_multi_getimg (hdr, 1, &rd_data, &rd_len);
170 show_boot_progress (14);
172 rd_len = rd_data = 0;
177 printf ("No initrd\n");
182 initrd_start = rd_data;
183 initrd_end = initrd_start + rd_len;
189 show_boot_progress (15);
191 debug ("## Transferring control to Linux (at address %08lx) ...\n",
194 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
195 defined (CONFIG_CMDLINE_TAG) || \
196 defined (CONFIG_INITRD_TAG) || \
197 defined (CONFIG_SERIAL_TAG) || \
198 defined (CONFIG_REVISION_TAG) || \
199 defined (CONFIG_LCD) || \
201 setup_start_tag (bd);
202 #ifdef CONFIG_SERIAL_TAG
203 setup_serial_tag (¶ms);
205 #ifdef CONFIG_REVISION_TAG
206 setup_revision_tag (¶ms);
208 #ifdef CONFIG_SETUP_MEMORY_TAGS
209 setup_memory_tags (bd);
211 #ifdef CONFIG_CMDLINE_TAG
212 setup_commandline_tag (bd, commandline);
214 #ifdef CONFIG_INITRD_TAG
215 if (initrd_start && initrd_end)
216 setup_initrd_tag (bd, initrd_start, initrd_end);
218 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
219 setup_videolfb_tag ((gd_t *) gd);
224 /* we assume that the kernel is in place */
225 printf ("\nStarting kernel ...\n\n");
227 #ifdef CONFIG_USB_DEVICE
229 extern void udc_disconnect (void);
234 cleanup_before_linux ();
236 theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
240 #if defined (CONFIG_SETUP_MEMORY_TAGS) || \
241 defined (CONFIG_CMDLINE_TAG) || \
242 defined (CONFIG_INITRD_TAG) || \
243 defined (CONFIG_SERIAL_TAG) || \
244 defined (CONFIG_REVISION_TAG) || \
245 defined (CONFIG_LCD) || \
247 static void setup_start_tag (bd_t *bd)
249 params = (struct tag *) bd->bi_boot_params;
251 params->hdr.tag = ATAG_CORE;
252 params->hdr.size = tag_size (tag_core);
254 params->u.core.flags = 0;
255 params->u.core.pagesize = 0;
256 params->u.core.rootdev = 0;
258 params = tag_next (params);
262 #ifdef CONFIG_SETUP_MEMORY_TAGS
263 static void setup_memory_tags (bd_t *bd)
267 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
268 params->hdr.tag = ATAG_MEM;
269 params->hdr.size = tag_size (tag_mem32);
271 params->u.mem.start = bd->bi_dram[i].start;
272 params->u.mem.size = bd->bi_dram[i].size;
274 params = tag_next (params);
277 #endif /* CONFIG_SETUP_MEMORY_TAGS */
280 static void setup_commandline_tag (bd_t *bd, char *commandline)
287 /* eat leading white space */
288 for (p = commandline; *p == ' '; p++);
290 /* skip non-existent command lines so the kernel will still
291 * use its default command line.
296 params->hdr.tag = ATAG_CMDLINE;
298 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
300 strcpy (params->u.cmdline.cmdline, p);
302 params = tag_next (params);
306 #ifdef CONFIG_INITRD_TAG
307 static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
309 /* an ATAG_INITRD node tells the kernel where the compressed
310 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
312 params->hdr.tag = ATAG_INITRD2;
313 params->hdr.size = tag_size (tag_initrd);
315 params->u.initrd.start = initrd_start;
316 params->u.initrd.size = initrd_end - initrd_start;
318 params = tag_next (params);
320 #endif /* CONFIG_INITRD_TAG */
323 #if defined (CONFIG_VFD) || defined (CONFIG_LCD)
324 extern ulong calc_fbsize (void);
325 static void setup_videolfb_tag (gd_t *gd)
327 /* An ATAG_VIDEOLFB node tells the kernel where and how large
328 * the framebuffer for video was allocated (among other things).
329 * Note that a _physical_ address is passed !
331 * We only use it to pass the address and size, the other entries
332 * in the tag_videolfb are not of interest.
334 params->hdr.tag = ATAG_VIDEOLFB;
335 params->hdr.size = tag_size (tag_videolfb);
337 params->u.videolfb.lfb_base = (u32) gd->fb_base;
338 /* Fb size is calculated according to parameters for our panel
340 params->u.videolfb.lfb_size = calc_fbsize();
342 params = tag_next (params);
344 #endif /* CONFIG_VFD || CONFIG_LCD */
346 #ifdef CONFIG_SERIAL_TAG
347 void setup_serial_tag (struct tag **tmp)
349 struct tag *params = *tmp;
350 struct tag_serialnr serialnr;
351 void get_board_serial(struct tag_serialnr *serialnr);
353 get_board_serial(&serialnr);
354 params->hdr.tag = ATAG_SERIAL;
355 params->hdr.size = tag_size (tag_serialnr);
356 params->u.serialnr.low = serialnr.low;
357 params->u.serialnr.high= serialnr.high;
358 params = tag_next (params);
363 #ifdef CONFIG_REVISION_TAG
364 void setup_revision_tag(struct tag **in_params)
367 u32 get_board_rev(void);
369 rev = get_board_rev();
370 params->hdr.tag = ATAG_REVISION;
371 params->hdr.size = tag_size (tag_revision);
372 params->u.revision.rev = rev;
373 params = tag_next (params);
375 #endif /* CONFIG_REVISION_TAG */
378 static void setup_end_tag (bd_t *bd)
380 params->hdr.tag = ATAG_NONE;
381 params->hdr.size = 0;
384 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */