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wdenk2262cfe2002-11-18 00:14:45 +00001/*
2 * (C) Copyright 2002
3 * Daniel Engström, 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>
wdenk7a8e9bed2003-05-31 18:35:21 +000040#include <asm/u-boot-i386.h>
wdenk2262cfe2002-11-18 00:14:45 +000041
Wolfgang Denkd87080b2006-03-31 18:32:53 +020042DECLARE_GLOBAL_DATA_PTR;
43
wdenk8bde7f72003-06-27 21:31:46 +000044extern long _i386boot_start;
45extern long _i386boot_end;
wdenk2262cfe2002-11-18 00:14:45 +000046extern long _i386boot_romdata_start;
wdenk8bde7f72003-06-27 21:31:46 +000047extern long _i386boot_romdata_dest;
48extern long _i386boot_romdata_size;
49extern long _i386boot_bss_start;
50extern long _i386boot_bss_size;
wdenk2262cfe2002-11-18 00:14:45 +000051
wdenk8bde7f72003-06-27 21:31:46 +000052extern long _i386boot_realmode;
wdenk2262cfe2002-11-18 00:14:45 +000053extern long _i386boot_realmode_size;
wdenk8bde7f72003-06-27 21:31:46 +000054extern long _i386boot_bios;
55extern long _i386boot_bios_size;
wdenk2262cfe2002-11-18 00:14:45 +000056
57/* The symbols defined by the linker script becomes pointers
58 * which is somewhat inconveient ... */
59ulong i386boot_start = (ulong)&_i386boot_start; /* code start (in flash) defined in start.S */
60ulong i386boot_end = (ulong)&_i386boot_end; /* code end (in flash) */
61ulong i386boot_romdata_start = (ulong)&_i386boot_romdata_start; /* datasegment in flash (also code+rodata end) */
62ulong i386boot_romdata_dest = (ulong)&_i386boot_romdata_dest; /* data location segment in ram */
63ulong i386boot_romdata_size = (ulong)&_i386boot_romdata_size; /* size of data segment */
64ulong i386boot_bss_start = (ulong)&_i386boot_bss_start; /* bss start */
65ulong i386boot_bss_size = (ulong)&_i386boot_bss_size; /* bss size */
66
67ulong i386boot_realmode = (ulong)&_i386boot_realmode; /* start of realmode entry code */
68ulong i386boot_realmode_size = (ulong)&_i386boot_realmode_size; /* size of realmode entry code */
69ulong i386boot_bios = (ulong)&_i386boot_bios; /* start of BIOS emulation code */
70ulong i386boot_bios_size = (ulong)&_i386boot_bios_size; /* size of BIOS emulation code */
71
72
73const char version_string[] =
Peter Tyser561858e2008-11-03 09:30:59 -060074 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
wdenk2262cfe2002-11-18 00:14:45 +000075
76
77/*
78 * Begin and End of memory area for malloc(), and current "brk"
79 */
80static ulong mem_malloc_start = 0;
81static ulong mem_malloc_end = 0;
82static ulong mem_malloc_brk = 0;
83
84static int mem_malloc_init(void)
85{
wdenk2262cfe2002-11-18 00:14:45 +000086 /* start malloc area right after the stack */
wdenk8bde7f72003-06-27 21:31:46 +000087 mem_malloc_start = i386boot_bss_start +
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020088 i386boot_bss_size + CONFIG_SYS_STACK_SIZE;
wdenk2262cfe2002-11-18 00:14:45 +000089 mem_malloc_start = (mem_malloc_start+3)&~3;
wdenk8bde7f72003-06-27 21:31:46 +000090
wdenk2262cfe2002-11-18 00:14:45 +000091 /* Use all available RAM for malloc() */
92 mem_malloc_end = gd->ram_size;
wdenk8bde7f72003-06-27 21:31:46 +000093
wdenk2262cfe2002-11-18 00:14:45 +000094 mem_malloc_brk = mem_malloc_start;
95
96 return 0;
97}
98
99void *sbrk (ptrdiff_t increment)
100{
101 ulong old = mem_malloc_brk;
102 ulong new = old + increment;
103
104 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
105 return (NULL);
106 }
107 mem_malloc_brk = new;
108
109 return ((void *) old);
110}
111
wdenk2262cfe2002-11-18 00:14:45 +0000112/************************************************************************
113 * Init Utilities *
114 ************************************************************************
115 * Some of this code should be moved into the core functions,
116 * or dropped completely,
117 * but let's get it working (again) first...
118 */
wdenk2262cfe2002-11-18 00:14:45 +0000119static int init_baudrate (void)
120{
wdenk7a8e9bed2003-05-31 18:35:21 +0000121 char tmp[64]; /* long enough for environment variables */
122 int i = getenv_r("baudrate", tmp, 64);
wdenk2262cfe2002-11-18 00:14:45 +0000123
wdenk7a8e9bed2003-05-31 18:35:21 +0000124 gd->baudrate = (i != 0)
wdenk2262cfe2002-11-18 00:14:45 +0000125 ? (int) simple_strtoul (tmp, NULL, 10)
126 : CONFIG_BAUDRATE;
127
128 return (0);
129}
130
131static int display_banner (void)
132{
133
134 printf ("\n\n%s\n\n", version_string);
135 printf ("U-Boot code: %08lX -> %08lX data: %08lX -> %08lX\n"
136 " BSS: %08lX -> %08lX stack: %08lX -> %08lX\n",
137 i386boot_start, i386boot_romdata_start-1,
138 i386boot_romdata_dest, i386boot_romdata_dest+i386boot_romdata_size-1,
139 i386boot_bss_start, i386boot_bss_start+i386boot_bss_size-1,
wdenk8bde7f72003-06-27 21:31:46 +0000140 i386boot_bss_start+i386boot_bss_size,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200141 i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);
wdenk8bde7f72003-06-27 21:31:46 +0000142
wdenk2262cfe2002-11-18 00:14:45 +0000143
144 return (0);
145}
146
147/*
148 * WARNING: this code looks "cleaner" than the PowerPC version, but
149 * has the disadvantage that you either get nothing, or everything.
150 * On PowerPC, you might see "DRAM: " before the system hangs - which
151 * gives a simple yet clear indication which part of the
152 * initialization if failing.
153 */
154static int display_dram_config (void)
155{
wdenk2262cfe2002-11-18 00:14:45 +0000156 int i;
157
158 puts ("DRAM Configuration:\n");
159
160 for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
161 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
162 print_size (gd->bd->bi_dram[i].size, "\n");
163 }
wdenk8bde7f72003-06-27 21:31:46 +0000164
wdenk2262cfe2002-11-18 00:14:45 +0000165 return (0);
166}
167
168static void display_flash_config (ulong size)
169{
170 puts ("Flash: ");
171 print_size (size, "\n");
172}
173
174
wdenk2262cfe2002-11-18 00:14:45 +0000175/*
176 * Breath some life into the board...
177 *
178 * Initialize an SMC for serial comms, and carry out some hardware
179 * tests.
180 *
181 * The first part of initialization is running from Flash memory;
182 * its main purpose is to initialize the RAM so that we
183 * can relocate the monitor code to RAM.
184 */
185
186/*
187 * All attempts to come up with a "common" initialization sequence
188 * that works for all boards and architectures failed: some of the
189 * requirements are just _too_ different. To get rid of the resulting
190 * mess of board dependend #ifdef'ed code we now make the whole
191 * initialization sequence configurable to the user.
192 *
193 * The requirements for any new initalization function is simple: it
194 * receives a pointer to the "global data" structure as it's only
195 * argument, and returns an integer return code, where 0 means
196 * "continue" and != 0 means "fatal error, hang the system".
197 */
198typedef int (init_fnc_t) (void);
199
200init_fnc_t *init_sequence[] = {
201 cpu_init, /* basic cpu dependent setup */
202 board_init, /* basic board dependent setup */
203 dram_init, /* configure available RAM banks */
204 mem_malloc_init, /* dependant on dram_init */
205 interrupt_init, /* set up exceptions */
wdenk8bde7f72003-06-27 21:31:46 +0000206 timer_init,
wdenk7a8e9bed2003-05-31 18:35:21 +0000207 serial_init,
wdenk2262cfe2002-11-18 00:14:45 +0000208 env_init, /* initialize environment */
209 init_baudrate, /* initialze baudrate settings */
210 serial_init, /* serial communications setup */
211 display_banner,
212 display_dram_config,
213
214 NULL,
215};
216
Graeme Russ3ef96de2008-09-07 07:08:42 +1000217gd_t *gd;
wdenk2262cfe2002-11-18 00:14:45 +0000218
219void start_i386boot (void)
220{
wdenk2262cfe2002-11-18 00:14:45 +0000221 char *s;
222 int i;
223 ulong size;
224 static gd_t gd_data;
225 static bd_t bd_data;
226 init_fnc_t **init_fnc_ptr;
wdenk8bde7f72003-06-27 21:31:46 +0000227
Graeme Russe17ee152009-02-24 21:14:56 +1100228#ifndef CONFIG_SKIP_RELOCATE_UBOOT
229 cmd_tbl_t *p;
230#endif
wdenk2262cfe2002-11-18 00:14:45 +0000231 show_boot_progress(0x21);
232
Graeme Russ3ef96de2008-09-07 07:08:42 +1000233 gd = &gd_data;
wdenk93f6a672004-07-01 20:28:03 +0000234 /* compiler optimization barrier needed for GCC >= 3.4 */
235 __asm__ __volatile__("": : :"memory");
wdenk8bde7f72003-06-27 21:31:46 +0000236
wdenk2262cfe2002-11-18 00:14:45 +0000237 memset (gd, 0, sizeof (gd_t));
238 gd->bd = &bd_data;
239 memset (gd->bd, 0, sizeof (bd_t));
240 show_boot_progress(0x22);
241
wdenk7a8e9bed2003-05-31 18:35:21 +0000242 gd->baudrate = CONFIG_BAUDRATE;
wdenk8bde7f72003-06-27 21:31:46 +0000243
Graeme Russe17ee152009-02-24 21:14:56 +1100244#ifndef CONFIG_SKIP_RELOCATE_UBOOT
245 /* Need to set relocation offset here for interrupt initialization */
246 gd->reloc_off = CONFIG_SYS_BL_START_RAM - TEXT_BASE;
247#endif
wdenk2262cfe2002-11-18 00:14:45 +0000248 for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) {
249 show_boot_progress(0xa130|i);
250
251 if ((*init_fnc_ptr)() != 0) {
252 hang ();
253 }
254 }
255 show_boot_progress(0x23);
256
Graeme Russe17ee152009-02-24 21:14:56 +1100257#ifndef CONFIG_SKIP_RELOCATE_UBOOT
258 for (p = &__u_boot_cmd_start; p != &__u_boot_cmd_end; p++) {
259 ulong addr;
260 addr = (ulong) (p->cmd) + gd->reloc_off;
261 p->cmd = (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
262 addr = (ulong)(p->name) + gd->reloc_off;
263 p->name = (char *)addr;
264
265 if (p->usage != NULL) {
266 addr = (ulong)(p->usage) + gd->reloc_off;
267 p->usage = (char *)addr;
268 }
269 #ifdef CONFIG_SYS_LONGHELP
270 if (p->help != NULL) {
271 addr = (ulong)(p->help) + gd->reloc_off;
272 p->help = (char *)addr;
273 }
274 #endif
275 }
276#endif
wdenk2262cfe2002-11-18 00:14:45 +0000277 /* configure available FLASH banks */
278 size = flash_init();
279 display_flash_config(size);
280 show_boot_progress(0x24);
281
282 show_boot_progress(0x25);
283
284 /* initialize environment */
285 env_relocate ();
286 show_boot_progress(0x26);
287
288
289 /* IP Address */
290 bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");
291
wdenk2262cfe2002-11-18 00:14:45 +0000292#if defined(CONFIG_PCI)
293 /*
294 * Do pci configuration
295 */
296 pci_init();
297#endif
298
299 show_boot_progress(0x27);
300
301
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200302 stdio_init ();
wdenk2262cfe2002-11-18 00:14:45 +0000303
wdenk27b207f2003-07-24 23:38:38 +0000304 jumptable_init ();
wdenk8bde7f72003-06-27 21:31:46 +0000305
wdenk2262cfe2002-11-18 00:14:45 +0000306 /* Initialize the console (after the relocation and devices init) */
307 console_init_r();
wdenk2262cfe2002-11-18 00:14:45 +0000308
309#ifdef CONFIG_MISC_INIT_R
310 /* miscellaneous platform dependent initialisations */
311 misc_init_r();
312#endif
313
Jon Loeliger67350562007-07-09 18:05:38 -0500314#if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
wdenk2262cfe2002-11-18 00:14:45 +0000315 WATCHDOG_RESET();
316 puts ("PCMCIA:");
317 pcmcia_init();
318#endif
319
Jon Loeliger67350562007-07-09 18:05:38 -0500320#if defined(CONFIG_CMD_KGDB)
wdenk2262cfe2002-11-18 00:14:45 +0000321 WATCHDOG_RESET();
322 puts("KGDB: ");
323 kgdb_init();
324#endif
325
326 /* enable exceptions */
wdenk7a8e9bed2003-05-31 18:35:21 +0000327 enable_interrupts();
wdenk2262cfe2002-11-18 00:14:45 +0000328 show_boot_progress(0x28);
329
330 /* Must happen after interrupts are initialized since
331 * an irq handler gets installed
332 */
wdenk42dfe7a2004-03-14 22:25:36 +0000333#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
wdenk2262cfe2002-11-18 00:14:45 +0000334 serial_buffered_init();
335#endif
wdenk8bde7f72003-06-27 21:31:46 +0000336
wdenk2262cfe2002-11-18 00:14:45 +0000337#ifdef CONFIG_STATUS_LED
338 status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
339#endif
340
wdenk7a8e9bed2003-05-31 18:35:21 +0000341 udelay(20);
wdenk2262cfe2002-11-18 00:14:45 +0000342
343 set_timer (0);
344
345 /* Initialize from environment */
346 if ((s = getenv ("loadaddr")) != NULL) {
347 load_addr = simple_strtoul (s, NULL, 16);
348 }
Jon Loeliger67350562007-07-09 18:05:38 -0500349#if defined(CONFIG_CMD_NET)
wdenk2262cfe2002-11-18 00:14:45 +0000350 if ((s = getenv ("bootfile")) != NULL) {
351 copy_filename (BootFile, s, sizeof (BootFile));
352 }
Jon Loeligerb3aff0c2007-07-10 11:19:50 -0500353#endif
wdenk2262cfe2002-11-18 00:14:45 +0000354
355 WATCHDOG_RESET();
356
Jon Loeliger67350562007-07-09 18:05:38 -0500357#if defined(CONFIG_CMD_IDE)
wdenk2262cfe2002-11-18 00:14:45 +0000358 WATCHDOG_RESET();
359 puts("IDE: ");
360 ide_init();
Jon Loeligerb3aff0c2007-07-10 11:19:50 -0500361#endif
wdenk2262cfe2002-11-18 00:14:45 +0000362
Jon Loeliger67350562007-07-09 18:05:38 -0500363#if defined(CONFIG_CMD_SCSI)
wdenk2262cfe2002-11-18 00:14:45 +0000364 WATCHDOG_RESET();
365 puts("SCSI: ");
366 scsi_init();
367#endif
368
Jon Loeliger67350562007-07-09 18:05:38 -0500369#if defined(CONFIG_CMD_DOC)
wdenk2262cfe2002-11-18 00:14:45 +0000370 WATCHDOG_RESET();
wdenk7a8e9bed2003-05-31 18:35:21 +0000371 puts("DOC: ");
wdenk2262cfe2002-11-18 00:14:45 +0000372 doc_init();
373#endif
374
Jon Loeliger67350562007-07-09 18:05:38 -0500375#if defined(CONFIG_CMD_NET)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200376#if defined(CONFIG_NET_MULTI)
wdenk2262cfe2002-11-18 00:14:45 +0000377 WATCHDOG_RESET();
378 puts("Net: ");
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200379#endif
wdenk2262cfe2002-11-18 00:14:45 +0000380 eth_initialize(gd->bd);
381#endif
382
Jon Loeliger67350562007-07-09 18:05:38 -0500383#if ( defined(CONFIG_CMD_NET)) && (0)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200384 WATCHDOG_RESET();
385# ifdef DEBUG
386 puts ("Reset Ethernet PHY\n");
387# endif
388 reset_phy();
389#endif
390
wdenk2262cfe2002-11-18 00:14:45 +0000391#ifdef CONFIG_LAST_STAGE_INIT
392 WATCHDOG_RESET();
393 /*
394 * Some parts can be only initialized if all others (like
395 * Interrupts) are up and running (i.e. the PC-style ISA
396 * keyboard).
397 */
398 last_stage_init();
399#endif
400
401
wdenk2262cfe2002-11-18 00:14:45 +0000402#ifdef CONFIG_POST
403 post_run (NULL, POST_RAM | post_bootmode_get(0));
wdenk2262cfe2002-11-18 00:14:45 +0000404#endif
wdenk8bde7f72003-06-27 21:31:46 +0000405
406
wdenk2262cfe2002-11-18 00:14:45 +0000407 show_boot_progress(0x29);
wdenk8bde7f72003-06-27 21:31:46 +0000408
wdenk2262cfe2002-11-18 00:14:45 +0000409 /* main_loop() can return to retry autoboot, if so just run it again. */
410 for (;;) {
wdenk7a8e9bed2003-05-31 18:35:21 +0000411 main_loop();
wdenk2262cfe2002-11-18 00:14:45 +0000412 }
413
414 /* NOTREACHED - no way out of command loop except booting */
415}
416
417void hang (void)
418{
419 puts ("### ERROR ### Please RESET the board ###\n");
420 for (;;);
421}
Mike Frysingera4986452008-04-13 19:42:19 -0400422
423unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
424{
425 /*
Graeme Russ3ef96de2008-09-07 07:08:42 +1000426 * TODO: Test this function - changed to fix compiler error.
427 * Original code was:
428 * return (entry >> 1) (argc, argv);
429 * with a comment about Nios function pointers are address >> 1
Mike Frysingera4986452008-04-13 19:42:19 -0400430 */
Graeme Russ3ef96de2008-09-07 07:08:42 +1000431 return (entry) (argc, argv);
Mike Frysingera4986452008-04-13 19:42:19 -0400432}