1 /* SPARC Board initialization
2 *
3 * (C) Copyright 2000-2006
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
6 * (C) Copyright 2007
7 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28 #include <common.h>
29 #include <command.h>
30 #include <malloc.h>
31 #include <stdio_dev.h>
32 #include <config.h>
33 #if defined(CONFIG_CMD_IDE)
34 #include <ide.h>
35 #endif
36 #ifdef CONFIG_STATUS_LED
37 #include <status_led.h>
38 #endif
39 #include <net.h>
40 #include <serial.h>
41 #include <version.h>
42 #if defined(CONFIG_POST)
43 #include <post.h>
44 #endif
45 #ifdef CONFIG_PS2KBD
46 #include <keyboard.h>
47 #endif
48 #ifdef CONFIG_CMD_AMBAPP
49 #include <ambapp.h>
50 #endif
51
52 #ifdef CONFIG_BITBANGMII
53 #include <miiphy.h>
54 #endif
55
56 DECLARE_GLOBAL_DATA_PTR;
57
58 /* Debug options
59 #define DEBUG_INIT_SEQUENCE
60 #define DEBUG_MEM_LAYOUT
61 #define DEBUG_COMMANDS
62 */
63
64 extern void timer_interrupt_init(void);
65 extern void malloc_bin_reloc(void);
66 extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
67 extern int prom_init(void);
68
69 #if defined(CONFIG__CMD_DOC)
70 void doc_init(void);
71 #endif
72
73 #if !defined(CONFIG_SYS_NO_FLASH)
74 static char *failed = "*** failed ***\n";
75 #endif
76
77 #include <environment.h>
78
79 ulong monitor_flash_len;
80
81 /************************************************************************
82 * Init Utilities *
83 ************************************************************************
84 * Some of this code should be moved into the core functions,
85 * but let's get it working (again) first...
86 */
87
init_baudrate(void)88 static int init_baudrate(void)
89 {
90 char tmp[64]; /* long enough for environment variables */
91 int i = getenv_r("baudrate", tmp, sizeof(tmp));
92
93 gd->baudrate = (i > 0)
94 ? (int)simple_strtoul(tmp, NULL, 10)
95 : CONFIG_BAUDRATE;
96 return (0);
97 }
98
99 /***********************************************************************/
100
101 /*
102 * All attempts to come up with a "common" initialization sequence
103 * that works for all boards and architectures failed: some of the
104 * requirements are just _too_ different. To get rid of the resulting
105 * mess of board dependend #ifdef'ed code we now make the whole
106 * initialization sequence configurable to the user.
107 *
108 * The requirements for any new initalization function is simple: it
109 * receives a pointer to the "global data" structure as it's only
110 * argument, and returns an integer return code, where 0 means
111 * "continue" and != 0 means "fatal error, hang the system".
112 */
113 typedef int (init_fnc_t) (void);
114
115 #define WATCHDOG_RESET(x)
116
117 /************************************************************************
118 * Initialization sequence *
119 ************************************************************************
120 */
121
122 init_fnc_t *init_sequence[] = {
123
124 #if defined(CONFIG_BOARD_EARLY_INIT_F)
125 board_early_init_f,
126 #endif
127 serial_init,
128
129 init_timebase,
130
131 #if defined(CONFIG_CMD_AMBAPP)
132 ambapp_init_reloc,
133 #endif
134
135 env_init,
136
137 init_baudrate,
138
139 console_init_f,
140 display_options,
141
142 checkcpu,
143 checkboard,
144 #if defined(CONFIG_MISC_INIT_F)
145 misc_init_f,
146 #endif
147
148 #ifdef CONFIG_POST
149 post_init_f,
150 #endif
151
152 NULL, /* Terminate this list,
153 * beware: this list will be relocated
154 * which means that NULL will become
155 * NULL+RELOC_OFFSET. We simply make
156 * NULL be -RELOC_OFFSET instead.
157 */
158 };
159
160 /************************************************************************
161 *
162 * This is the SPARC board initialization routine, running from RAM.
163 *
164 ************************************************************************
165 */
166 #ifdef DEBUG_INIT_SEQUENCE
167 char *str_init_seq = "INIT_SEQ 00\n";
168 char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
169 #endif
170
board_init_f(ulong bootflag)171 void board_init_f(ulong bootflag)
172 {
173 cmd_tbl_t *cmdtp;
174 bd_t *bd;
175 unsigned char *s;
176 init_fnc_t **init_fnc_ptr;
177 int j;
178 int i;
179 char *e;
180
181 #ifndef CONFIG_SYS_NO_FLASH
182 ulong flash_size;
183 #endif
184
185 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_OFFSET);
186
187 /* Clear initial global data */
188 memset((void *)gd, 0, sizeof(gd_t));
189
190 gd->bd = (bd_t *) (gd + 1); /* At end of global data */
191 gd->baudrate = CONFIG_BAUDRATE;
192 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
193
194 bd = gd->bd;
195 bd->bi_memstart = CONFIG_SYS_RAM_BASE;
196 bd->bi_memsize = CONFIG_SYS_RAM_SIZE;
197 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
198 #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
199 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;
200 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
201 #endif
202 bd->bi_baudrate = CONFIG_BAUDRATE;
203 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
204
205 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
206 gd->reloc_off = CONFIG_SYS_RELOC_MONITOR_BASE - CONFIG_SYS_MONITOR_BASE;
207
208 for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
209 ++init_fnc_ptr, j++) {
210 #ifdef DEBUG_INIT_SEQUENCE
211 if (j > 9)
212 str_init_seq[9] = '0' + (j / 10);
213 str_init_seq[10] = '0' + (j - (j / 10) * 10);
214 serial_puts(str_init_seq);
215 #endif
216 if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
217 hang();
218 }
219 }
220 #ifdef DEBUG_INIT_SEQUENCE
221 serial_puts(str_init_seq_done);
222 #endif
223
224 /*
225 * Now that we have DRAM mapped and working, we can
226 * relocate the code and continue running from DRAM.
227 *
228 * Reserve memory at end of RAM for (top down in that order):
229 * - kernel log buffer
230 * - protected RAM
231 * - LCD framebuffer
232 * - monitor code
233 * - board info struct
234 */
235 #ifdef DEBUG_MEM_LAYOUT
236 printf("CONFIG_SYS_MONITOR_BASE: 0x%lx\n", CONFIG_SYS_MONITOR_BASE);
237 printf("CONFIG_ENV_ADDR: 0x%lx\n", CONFIG_ENV_ADDR);
238 printf("CONFIG_SYS_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CONFIG_SYS_RELOC_MONITOR_BASE,
239 CONFIG_SYS_MONITOR_LEN);
240 printf("CONFIG_SYS_MALLOC_BASE: 0x%lx (%d)\n", CONFIG_SYS_MALLOC_BASE,
241 CONFIG_SYS_MALLOC_LEN);
242 printf("CONFIG_SYS_INIT_SP_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_INIT_SP_OFFSET,
243 CONFIG_SYS_STACK_SIZE);
244 printf("CONFIG_SYS_PROM_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_PROM_OFFSET,
245 CONFIG_SYS_PROM_SIZE);
246 printf("CONFIG_SYS_GBL_DATA_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_GBL_DATA_OFFSET,
247 CONFIG_SYS_GBL_DATA_SIZE);
248 #endif
249
250 #ifdef CONFIG_POST
251 post_bootmode_init();
252 post_run(NULL, POST_ROM | post_bootmode_get(0));
253 #endif
254
255 /*
256 * We have to relocate the command table manually
257 */
258 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
259 ulong addr;
260 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
261 #if DEBUG_COMMANDS
262 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
263 cmdtp->name, (ulong) (cmdtp->cmd), addr);
264 #endif
265 cmdtp->cmd =
266 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
267
268 addr = (ulong) (cmdtp->name) + gd->reloc_off;
269 cmdtp->name = (char *)addr;
270
271 if (cmdtp->usage) {
272 addr = (ulong) (cmdtp->usage) + gd->reloc_off;
273 cmdtp->usage = (char *)addr;
274 }
275 #ifdef CONFIG_SYS_LONGHELP
276 if (cmdtp->help) {
277 addr = (ulong) (cmdtp->help) + gd->reloc_off;
278 cmdtp->help = (char *)addr;
279 }
280 #endif
281 }
282
283 #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
284 puts("AMBA:\n");
285 do_ambapp_print(NULL, 0, 0, NULL);
286 #endif
287
288 /* initialize higher level parts of CPU like time base and timers */
289 cpu_init_r();
290
291 /* start timer */
292 timer_interrupt_init();
293
294 /*
295 * Enable Interrupts before any calls to udelay,
296 * the flash driver may use udelay resulting in
297 * a hang if not timer0 IRQ is enabled.
298 */
299 interrupt_init();
300
301 /* The Malloc area is immediately below the monitor copy in RAM */
302 mem_malloc_init(CONFIG_SYS_MALLOC_BASE,
303 CONFIG_SYS_MALLOC_END - CONFIG_SYS_MALLOC_BASE);
304 malloc_bin_reloc();
305
306 #if !defined(CONFIG_SYS_NO_FLASH)
307 puts("FLASH: ");
308
309 if ((flash_size = flash_init()) > 0) {
310 # ifdef CONFIG_SYS_FLASH_CHECKSUM
311 print_size(flash_size, "");
312 /*
313 * Compute and print flash CRC if flashchecksum is set to 'y'
314 *
315 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
316 */
317 s = getenv("flashchecksum");
318 if (s && (*s == 'y')) {
319 printf(" CRC: %08lX",
320 crc32(0, (const unsigned char *)CONFIG_SYS_FLASH_BASE,
321 flash_size)
322 );
323 }
324 putc('\n');
325 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
326 print_size(flash_size, "\n");
327 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
328 } else {
329 puts(failed);
330 hang();
331 }
332
333 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
334 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
335 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
336 bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */
337 #else
338 bd->bi_flashoffset = 0;
339 #endif
340 #else /* CONFIG_SYS_NO_FLASH */
341 bd->bi_flashsize = 0;
342 bd->bi_flashstart = 0;
343 bd->bi_flashoffset = 0;
344 #endif /* !CONFIG_SYS_NO_FLASH */
345
346 #ifdef CONFIG_SPI
347 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
348 spi_init_f();
349 # endif
350 spi_init_r();
351 #endif
352
353 /* relocate environment function pointers etc. */
354 env_relocate();
355
356 #if defined(CONFIG_BOARD_LATE_INIT)
357 board_late_init();
358 #endif
359
360 #ifdef CONFIG_ID_EEPROM
361 mac_read_from_eeprom();
362 #endif
363
364 /* IP Address */
365 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
366 #if defined(CONFIG_PCI)
367 /*
368 * Do pci configuration
369 */
370 pci_init();
371 #endif
372
373 /* Initialize stdio devices */
374 stdio_init();
375
376 /* Initialize the jump table for applications */
377 jumptable_init();
378
379 /* Initialize the console (after the relocation and devices init) */
380 console_init_r();
381
382 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
383 serial_buffered_init();
384 #endif
385
386 #ifdef CONFIG_STATUS_LED
387 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
388 #endif
389
390 udelay(20);
391
392 set_timer(0);
393
394 /* Initialize from environment */
395 if ((s = getenv("loadaddr")) != NULL) {
396 load_addr = simple_strtoul(s, NULL, 16);
397 }
398 #if defined(CONFIG_CMD_NET)
399 if ((s = getenv("bootfile")) != NULL) {
400 copy_filename(BootFile, s, sizeof(BootFile));
401 }
402 #endif /* CONFIG_CMD_NET */
403
404 WATCHDOG_RESET();
405
406 #if defined(CONFIG_CMD_DOC)
407 WATCHDOG_RESET();
408 puts("DOC: ");
409 doc_init();
410 #endif
411
412 #ifdef CONFIG_BITBANGMII
413 bb_miiphy_init();
414 #endif
415 #if defined(CONFIG_CMD_NET)
416 #if defined(CONFIG_NET_MULTI)
417 WATCHDOG_RESET();
418 puts("Net: ");
419 #endif
420 eth_initialize(bd);
421 #endif
422
423 #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
424 WATCHDOG_RESET();
425 debug("Reset Ethernet PHY\n");
426 reset_phy();
427 #endif
428
429 #ifdef CONFIG_POST
430 post_run(NULL, POST_RAM | post_bootmode_get(0));
431 #endif
432
433 #if defined(CONFIG_CMD_IDE)
434 WATCHDOG_RESET();
435 puts("IDE: ");
436 ide_init();
437 #endif /* CONFIG_CMD_IDE */
438
439 #ifdef CONFIG_LAST_STAGE_INIT
440 WATCHDOG_RESET();
441 /*
442 * Some parts can be only initialized if all others (like
443 * Interrupts) are up and running (i.e. the PC-style ISA
444 * keyboard).
445 */
446 last_stage_init();
447 #endif
448
449 #ifdef CONFIG_PS2KBD
450 puts("PS/2: ");
451 kbd_init();
452 #endif
453 prom_init();
454
455 /* main_loop */
456 for (;;) {
457 WATCHDOG_RESET();
458 main_loop();
459 }
460
461 }
462
hang(void)463 void hang(void)
464 {
465 puts("### ERROR ### Please RESET the board ###\n");
466 #ifdef CONFIG_SHOW_BOOT_PROGRESS
467 show_boot_progress(-30);
468 #endif
469 for (;;) ;
470 }
471
472 /************************************************************************/
473