blob: 3e89ef428276ff71153710fb619ce2db84b514f0 [file] [log] [blame]
wdenk2262cfe2002-11-18 00:14:45 +00001/*
2 * (C) Copyright 2002
Luigi 'Comio' Mantellini310cecb2009-10-10 12:42:21 +02003 * Daniel Engstr�m, Omicron Ceti AB, daniel@omicron.se
wdenk8bde7f72003-06-27 21:31:46 +00004 *
wdenk2262cfe2002-11-18 00:14:45 +00005 * (C) Copyright 2002
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
wdenk8bde7f72003-06-27 21:31:46 +00007 *
wdenk2262cfe2002-11-18 00:14:45 +00008 * (C) Copyright 2002
9 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
10 * Marius Groeger <mgroeger@sysgo.de>
11 *
12 * See file CREDITS for list of people who contributed to this
13 * project.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * MA 02111-1307 USA
29 */
30
31#include <common.h>
32#include <watchdog.h>
33#include <command.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020034#include <stdio_dev.h>
Peter Tyser561858e2008-11-03 09:30:59 -060035#include <timestamp.h>
wdenk2262cfe2002-11-18 00:14:45 +000036#include <version.h>
37#include <malloc.h>
wdenk2262cfe2002-11-18 00:14:45 +000038#include <net.h>
39#include <ide.h>
Graeme Russbf165002010-04-24 00:05:47 +100040#include <serial.h>
wdenk7a8e9bed2003-05-31 18:35:21 +000041#include <asm/u-boot-i386.h>
Graeme Russ1c409bc2009-11-24 20:04:21 +110042#include <elf.h>
wdenk2262cfe2002-11-18 00:14:45 +000043
Luigi 'Comio' Mantellini310cecb2009-10-10 12:42:21 +020044#ifdef CONFIG_BITBANGMII
45#include <miiphy.h>
46#endif
47
Wolfgang Denkd87080b2006-03-31 18:32:53 +020048DECLARE_GLOBAL_DATA_PTR;
49
Graeme Russ1c409bc2009-11-24 20:04:21 +110050/* Exports from the Linker Script */
Graeme Russ067f9b12010-10-07 20:03:31 +110051extern ulong __text_start;
Graeme Russ22191422010-10-07 20:03:32 +110052extern ulong __data_end;
Graeme Russ067f9b12010-10-07 20:03:31 +110053extern ulong __rel_dyn_start;
54extern ulong __rel_dyn_end;
55extern ulong __bss_start;
56extern ulong __bss_size;
Graeme Russ2fb1bc42010-04-24 00:05:44 +100057
wdenk2262cfe2002-11-18 00:14:45 +000058const char version_string[] =
Peter Tyser561858e2008-11-03 09:30:59 -060059 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
wdenk2262cfe2002-11-18 00:14:45 +000060
wdenk2262cfe2002-11-18 00:14:45 +000061/************************************************************************
62 * Init Utilities *
63 ************************************************************************
64 * Some of this code should be moved into the core functions,
65 * or dropped completely,
66 * but let's get it working (again) first...
67 */
wdenk2262cfe2002-11-18 00:14:45 +000068static int init_baudrate (void)
69{
wdenk7a8e9bed2003-05-31 18:35:21 +000070 char tmp[64]; /* long enough for environment variables */
Wolfgang Denkcdb74972010-07-24 21:55:43 +020071 int i = getenv_f("baudrate", tmp, 64);
wdenk2262cfe2002-11-18 00:14:45 +000072
wdenk7a8e9bed2003-05-31 18:35:21 +000073 gd->baudrate = (i != 0)
wdenk2262cfe2002-11-18 00:14:45 +000074 ? (int) simple_strtoul (tmp, NULL, 10)
75 : CONFIG_BAUDRATE;
76
77 return (0);
78}
79
80static int display_banner (void)
81{
82
83 printf ("\n\n%s\n\n", version_string);
Graeme Russ1c409bc2009-11-24 20:04:21 +110084/*
wdenk2262cfe2002-11-18 00:14:45 +000085 printf ("U-Boot code: %08lX -> %08lX data: %08lX -> %08lX\n"
86 " BSS: %08lX -> %08lX stack: %08lX -> %08lX\n",
87 i386boot_start, i386boot_romdata_start-1,
88 i386boot_romdata_dest, i386boot_romdata_dest+i386boot_romdata_size-1,
89 i386boot_bss_start, i386boot_bss_start+i386boot_bss_size-1,
wdenk8bde7f72003-06-27 21:31:46 +000090 i386boot_bss_start+i386boot_bss_size,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020091 i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);
wdenk8bde7f72003-06-27 21:31:46 +000092
Graeme Russ1c409bc2009-11-24 20:04:21 +110093*/
wdenk2262cfe2002-11-18 00:14:45 +000094
95 return (0);
96}
97
98/*
99 * WARNING: this code looks "cleaner" than the PowerPC version, but
100 * has the disadvantage that you either get nothing, or everything.
101 * On PowerPC, you might see "DRAM: " before the system hangs - which
102 * gives a simple yet clear indication which part of the
103 * initialization if failing.
104 */
105static int display_dram_config (void)
106{
wdenk2262cfe2002-11-18 00:14:45 +0000107 int i;
108
109 puts ("DRAM Configuration:\n");
110
111 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
112 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
113 print_size (gd->bd->bi_dram[i].size, "\n");
114 }
wdenk8bde7f72003-06-27 21:31:46 +0000115
wdenk2262cfe2002-11-18 00:14:45 +0000116 return (0);
117}
118
119static void display_flash_config (ulong size)
120{
121 puts ("Flash: ");
122 print_size (size, "\n");
123}
124
wdenk2262cfe2002-11-18 00:14:45 +0000125/*
126 * Breath some life into the board...
127 *
128 * Initialize an SMC for serial comms, and carry out some hardware
129 * tests.
130 *
131 * The first part of initialization is running from Flash memory;
132 * its main purpose is to initialize the RAM so that we
133 * can relocate the monitor code to RAM.
134 */
135
Graeme Russ1c409bc2009-11-24 20:04:21 +1100136
wdenk2262cfe2002-11-18 00:14:45 +0000137/*
138 * All attempts to come up with a "common" initialization sequence
139 * that works for all boards and architectures failed: some of the
140 * requirements are just _too_ different. To get rid of the resulting
141 * mess of board dependend #ifdef'ed code we now make the whole
142 * initialization sequence configurable to the user.
143 *
144 * The requirements for any new initalization function is simple: it
145 * receives a pointer to the "global data" structure as it's only
146 * argument, and returns an integer return code, where 0 means
147 * "continue" and != 0 means "fatal error, hang the system".
148 */
149typedef int (init_fnc_t) (void);
150
151init_fnc_t *init_sequence[] = {
Graeme Russ1c409bc2009-11-24 20:04:21 +1100152 cpu_init_r, /* basic cpu dependent setup */
153 board_early_init_r, /* basic board dependent setup */
wdenk2262cfe2002-11-18 00:14:45 +0000154 dram_init, /* configure available RAM banks */
wdenk2262cfe2002-11-18 00:14:45 +0000155 interrupt_init, /* set up exceptions */
wdenk8bde7f72003-06-27 21:31:46 +0000156 timer_init,
wdenk2262cfe2002-11-18 00:14:45 +0000157 env_init, /* initialize environment */
158 init_baudrate, /* initialze baudrate settings */
159 serial_init, /* serial communications setup */
160 display_banner,
161 display_dram_config,
162
163 NULL,
164};
165
Graeme Russ3ef96de2008-09-07 07:08:42 +1000166gd_t *gd;
wdenk2262cfe2002-11-18 00:14:45 +0000167
Graeme Russ1c409bc2009-11-24 20:04:21 +1100168/*
169 * Load U-Boot into RAM, initialize BSS, perform relocation adjustments
170 */
Graeme Russ161b3582010-10-07 20:03:29 +1100171void board_init_f (ulong gdp)
Graeme Russ1c409bc2009-11-24 20:04:21 +1100172{
Graeme Russ067f9b12010-10-07 20:03:31 +1100173 void *text_start = &__text_start;
Graeme Russ22191422010-10-07 20:03:32 +1100174 void *data_end = &__data_end;
Graeme Russ067f9b12010-10-07 20:03:31 +1100175 Elf32_Rel *rel_dyn_start = (Elf32_Rel *)&__rel_dyn_start;
176 Elf32_Rel *rel_dyn_end = (Elf32_Rel *)&__rel_dyn_end;
177 void *bss_start = &__bss_start;
178 ulong bss_size = (ulong)&__bss_size;
Graeme Russ1c409bc2009-11-24 20:04:21 +1100179
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000180 ulong uboot_size;
181 void *dest_addr;
Graeme Russ1c409bc2009-11-24 20:04:21 +1100182 ulong rel_offset;
183 Elf32_Rel *re;
184
Graeme Russ22191422010-10-07 20:03:32 +1100185 uboot_size = (ulong)data_end - (ulong)text_start;
Graeme Russ161b3582010-10-07 20:03:29 +1100186 dest_addr = (void *)gdp - (uboot_size + (ulong)bss_size);
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000187 rel_offset = text_start - dest_addr;
Graeme Russ1c409bc2009-11-24 20:04:21 +1100188
189 /* First stage CPU initialization */
190 if (cpu_init_f() != 0)
191 hang();
192
193 /* First stage Board initialization */
194 if (board_early_init_f() != 0)
195 hang();
196
197 /* Copy U-Boot into RAM */
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000198 memcpy(dest_addr, text_start, uboot_size);
Graeme Russ1c409bc2009-11-24 20:04:21 +1100199
200 /* Clear BSS */
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000201 memset(bss_start - rel_offset, 0, bss_size);
Graeme Russ1c409bc2009-11-24 20:04:21 +1100202
203 /* Perform relocation adjustments */
204 for (re = rel_dyn_start; re < rel_dyn_end; re++)
205 {
206 if (re->r_offset >= TEXT_BASE)
207 if (*(ulong *)re->r_offset >= TEXT_BASE)
208 *(ulong *)(re->r_offset - rel_offset) -= (Elf32_Addr)rel_offset;
209 }
210
Graeme Russ161b3582010-10-07 20:03:29 +1100211 ((gd_t *)gdp)->reloc_off = rel_offset;
212 ((gd_t *)gdp)->flags |= GD_FLG_RELOC;
213
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000214 /* Enter the relocated U-Boot! */
Graeme Russ161b3582010-10-07 20:03:29 +1100215 (board_init_r - rel_offset)((gd_t *)gdp, (ulong)dest_addr);
216
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000217 /* NOTREACHED - board_init_f() does not return */
Graeme Russ1c409bc2009-11-24 20:04:21 +1100218 while(1);
219}
220
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000221void board_init_r(gd_t *id, ulong dest_addr)
wdenk2262cfe2002-11-18 00:14:45 +0000222{
wdenk2262cfe2002-11-18 00:14:45 +0000223 char *s;
224 int i;
225 ulong size;
wdenk2262cfe2002-11-18 00:14:45 +0000226 static bd_t bd_data;
227 init_fnc_t **init_fnc_ptr;
wdenk8bde7f72003-06-27 21:31:46 +0000228
wdenk2262cfe2002-11-18 00:14:45 +0000229 show_boot_progress(0x21);
230
Graeme Russ1c409bc2009-11-24 20:04:21 +1100231 gd = id;
wdenk93f6a672004-07-01 20:28:03 +0000232 /* compiler optimization barrier needed for GCC >= 3.4 */
233 __asm__ __volatile__("": : :"memory");
wdenk8bde7f72003-06-27 21:31:46 +0000234
wdenk2262cfe2002-11-18 00:14:45 +0000235 gd->bd = &bd_data;
236 memset (gd->bd, 0, sizeof (bd_t));
237 show_boot_progress(0x22);
238
wdenk7a8e9bed2003-05-31 18:35:21 +0000239 gd->baudrate = CONFIG_BAUDRATE;
wdenk8bde7f72003-06-27 21:31:46 +0000240
Graeme Russ2fb1bc42010-04-24 00:05:44 +1000241 mem_malloc_init((((ulong)dest_addr - CONFIG_SYS_MALLOC_LEN)+3)&~3,
Graeme Russ1c409bc2009-11-24 20:04:21 +1100242 CONFIG_SYS_MALLOC_LEN);
243
wdenk2262cfe2002-11-18 00:14:45 +0000244 for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) {
245 show_boot_progress(0xa130|i);
246
247 if ((*init_fnc_ptr)() != 0) {
248 hang ();
249 }
250 }
251 show_boot_progress(0x23);
252
Graeme Russbf165002010-04-24 00:05:47 +1000253#ifdef CONFIG_SERIAL_MULTI
254 serial_initialize();
255#endif
wdenk2262cfe2002-11-18 00:14:45 +0000256 /* configure available FLASH banks */
257 size = flash_init();
258 display_flash_config(size);
259 show_boot_progress(0x24);
260
261 show_boot_progress(0x25);
262
263 /* initialize environment */
264 env_relocate ();
265 show_boot_progress(0x26);
266
267
Graeme Russ535ad2d2010-04-24 00:05:36 +1000268#ifdef CONFIG_CMD_NET
wdenk2262cfe2002-11-18 00:14:45 +0000269 /* IP Address */
270 bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");
Graeme Russ535ad2d2010-04-24 00:05:36 +1000271#endif
wdenk2262cfe2002-11-18 00:14:45 +0000272
wdenk2262cfe2002-11-18 00:14:45 +0000273#if defined(CONFIG_PCI)
274 /*
275 * Do pci configuration
276 */
277 pci_init();
278#endif
279
280 show_boot_progress(0x27);
281
282
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200283 stdio_init ();
wdenk2262cfe2002-11-18 00:14:45 +0000284
wdenk27b207f2003-07-24 23:38:38 +0000285 jumptable_init ();
wdenk8bde7f72003-06-27 21:31:46 +0000286
wdenk2262cfe2002-11-18 00:14:45 +0000287 /* Initialize the console (after the relocation and devices init) */
288 console_init_r();
wdenk2262cfe2002-11-18 00:14:45 +0000289
290#ifdef CONFIG_MISC_INIT_R
291 /* miscellaneous platform dependent initialisations */
292 misc_init_r();
293#endif
294
Jon Loeliger67350562007-07-09 18:05:38 -0500295#if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
wdenk2262cfe2002-11-18 00:14:45 +0000296 WATCHDOG_RESET();
297 puts ("PCMCIA:");
298 pcmcia_init();
299#endif
300
Jon Loeliger67350562007-07-09 18:05:38 -0500301#if defined(CONFIG_CMD_KGDB)
wdenk2262cfe2002-11-18 00:14:45 +0000302 WATCHDOG_RESET();
303 puts("KGDB: ");
304 kgdb_init();
305#endif
306
307 /* enable exceptions */
wdenk7a8e9bed2003-05-31 18:35:21 +0000308 enable_interrupts();
wdenk2262cfe2002-11-18 00:14:45 +0000309 show_boot_progress(0x28);
310
wdenk2262cfe2002-11-18 00:14:45 +0000311#ifdef CONFIG_STATUS_LED
312 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
313#endif
314
wdenk7a8e9bed2003-05-31 18:35:21 +0000315 udelay(20);
wdenk2262cfe2002-11-18 00:14:45 +0000316
317 set_timer (0);
318
319 /* Initialize from environment */
320 if ((s = getenv ("loadaddr")) != NULL) {
321 load_addr = simple_strtoul (s, NULL, 16);
322 }
Jon Loeliger67350562007-07-09 18:05:38 -0500323#if defined(CONFIG_CMD_NET)
wdenk2262cfe2002-11-18 00:14:45 +0000324 if ((s = getenv ("bootfile")) != NULL) {
325 copy_filename (BootFile, s, sizeof (BootFile));
326 }
Jon Loeligerb3aff0c2007-07-10 11:19:50 -0500327#endif
wdenk2262cfe2002-11-18 00:14:45 +0000328
329 WATCHDOG_RESET();
330
Jon Loeliger67350562007-07-09 18:05:38 -0500331#if defined(CONFIG_CMD_IDE)
wdenk2262cfe2002-11-18 00:14:45 +0000332 WATCHDOG_RESET();
333 puts("IDE: ");
334 ide_init();
Jon Loeligerb3aff0c2007-07-10 11:19:50 -0500335#endif
wdenk2262cfe2002-11-18 00:14:45 +0000336
Jon Loeliger67350562007-07-09 18:05:38 -0500337#if defined(CONFIG_CMD_SCSI)
wdenk2262cfe2002-11-18 00:14:45 +0000338 WATCHDOG_RESET();
339 puts("SCSI: ");
340 scsi_init();
341#endif
342
Jon Loeliger67350562007-07-09 18:05:38 -0500343#if defined(CONFIG_CMD_DOC)
wdenk2262cfe2002-11-18 00:14:45 +0000344 WATCHDOG_RESET();
wdenk7a8e9bed2003-05-31 18:35:21 +0000345 puts("DOC: ");
wdenk2262cfe2002-11-18 00:14:45 +0000346 doc_init();
347#endif
348
Luigi 'Comio' Mantellini310cecb2009-10-10 12:42:21 +0200349#ifdef CONFIG_BITBANGMII
350 bb_miiphy_init();
351#endif
Jon Loeliger67350562007-07-09 18:05:38 -0500352#if defined(CONFIG_CMD_NET)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200353#if defined(CONFIG_NET_MULTI)
wdenk2262cfe2002-11-18 00:14:45 +0000354 WATCHDOG_RESET();
355 puts("Net: ");
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200356#endif
wdenk2262cfe2002-11-18 00:14:45 +0000357 eth_initialize(gd->bd);
358#endif
359
Jon Loeliger67350562007-07-09 18:05:38 -0500360#if ( defined(CONFIG_CMD_NET)) && (0)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200361 WATCHDOG_RESET();
362# ifdef DEBUG
363 puts ("Reset Ethernet PHY\n");
364# endif
365 reset_phy();
366#endif
367
wdenk2262cfe2002-11-18 00:14:45 +0000368#ifdef CONFIG_LAST_STAGE_INIT
369 WATCHDOG_RESET();
370 /*
371 * Some parts can be only initialized if all others (like
372 * Interrupts) are up and running (i.e. the PC-style ISA
373 * keyboard).
374 */
375 last_stage_init();
376#endif
377
378
wdenk2262cfe2002-11-18 00:14:45 +0000379#ifdef CONFIG_POST
380 post_run (NULL, POST_RAM | post_bootmode_get(0));
wdenk2262cfe2002-11-18 00:14:45 +0000381#endif
wdenk8bde7f72003-06-27 21:31:46 +0000382
383
wdenk2262cfe2002-11-18 00:14:45 +0000384 show_boot_progress(0x29);
wdenk8bde7f72003-06-27 21:31:46 +0000385
wdenk2262cfe2002-11-18 00:14:45 +0000386 /* main_loop() can return to retry autoboot, if so just run it again. */
387 for (;;) {
wdenk7a8e9bed2003-05-31 18:35:21 +0000388 main_loop();
wdenk2262cfe2002-11-18 00:14:45 +0000389 }
390
391 /* NOTREACHED - no way out of command loop except booting */
392}
393
394void hang (void)
395{
396 puts ("### ERROR ### Please RESET the board ###\n");
397 for (;;);
398}
Mike Frysingera4986452008-04-13 19:42:19 -0400399
Graeme Russe69c0cb2010-08-22 16:25:58 +1000400unsigned long do_go_exec (ulong (*entry)(int, char * const []), int argc, char * const argv[])
Mike Frysingera4986452008-04-13 19:42:19 -0400401{
Graeme Russe69c0cb2010-08-22 16:25:58 +1000402 unsigned long ret = 0;
403 char **argv_tmp;
Graeme Russ9e08efc2010-04-24 00:05:39 +1000404
Graeme Russe69c0cb2010-08-22 16:25:58 +1000405 /*
406 * x86 does not use a dedicated register to pass the pointer to
407 * the global_data, so it is instead passed as argv[-1]. By using
408 * argv[-1], the called 'Application' can use the contents of
409 * argv natively. However, to safely use argv[-1] a new copy of
410 * argv is needed with the extra element
411 */
412 argv_tmp = malloc(sizeof(char *) * (argc + 1));
413
414 if (argv_tmp) {
415 argv_tmp[0] = (char *)gd;
416
417 memcpy(&argv_tmp[1], argv, (size_t)(sizeof(char *) * argc));
418
419 ret = (entry) (argc, &argv_tmp[1]);
420 free(argv_tmp);
421 }
422
423 return ret;
Mike Frysingera4986452008-04-13 19:42:19 -0400424}
Graeme Russ79ea6b82010-04-24 00:05:48 +1000425
426void setup_pcat_compatibility(void)
427 __attribute__((weak, alias("__setup_pcat_compatibility")));
428
429void __setup_pcat_compatibility(void)
430{
431}