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Daniel Hellstromc2f02da2008-03-28 09:47:00 +01001/* 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 <devices.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
52DECLARE_GLOBAL_DATA_PTR;
53
54/* Debug options
55#define DEBUG_INIT_SEQUENCE
56#define DEBUG_MEM_LAYOUT
57#define DEBUG_COMMANDS
58*/
59
60extern void timer_interrupt_init(void);
61extern void malloc_bin_reloc(void);
62extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
63extern int prom_init(void);
64
65#if defined(CONFIG__CMD_DOC)
66void doc_init(void);
67#endif
68
69#if !defined(CFG_NO_FLASH)
70static char *failed = "*** failed ***\n";
71#endif
72
73#include <environment.h>
74
75ulong monitor_flash_len;
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
84/************************************************************************
85 * Utilities *
86 ************************************************************************
87 */
88
89/*
90 * The Malloc area is immediately below the monitor copy in RAM
91 */
92static void mem_malloc_init(void)
93{
94 mem_malloc_start = CFG_MALLOC_BASE;
95 mem_malloc_end = CFG_MALLOC_END;
96 mem_malloc_brk = mem_malloc_start;
97 memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
98}
99
100void *sbrk(ptrdiff_t increment)
101{
102 ulong old = mem_malloc_brk;
103 ulong new = old + increment;
104
105 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
106 return (NULL);
107 }
108 mem_malloc_brk = new;
109 return ((void *)old);
110}
111
112/***********************************************************************/
113
114/************************************************************************
115 * Init Utilities *
116 ************************************************************************
117 * Some of this code should be moved into the core functions,
118 * but let's get it working (again) first...
119 */
120
121static int init_baudrate(void)
122{
123 char tmp[64]; /* long enough for environment variables */
124 int i = getenv_r("baudrate", tmp, sizeof(tmp));
125
126 gd->baudrate = (i > 0)
127 ? (int)simple_strtoul(tmp, NULL, 10)
128 : CONFIG_BAUDRATE;
129 return (0);
130}
131
132/***********************************************************************/
133
134/*
135 * All attempts to come up with a "common" initialization sequence
136 * that works for all boards and architectures failed: some of the
137 * requirements are just _too_ different. To get rid of the resulting
138 * mess of board dependend #ifdef'ed code we now make the whole
139 * initialization sequence configurable to the user.
140 *
141 * The requirements for any new initalization function is simple: it
142 * receives a pointer to the "global data" structure as it's only
143 * argument, and returns an integer return code, where 0 means
144 * "continue" and != 0 means "fatal error, hang the system".
145 */
146typedef int (init_fnc_t) (void);
147
148#define WATCHDOG_RESET(x)
149
150/************************************************************************
151 * Initialization sequence *
152 ************************************************************************
153 */
154
155init_fnc_t *init_sequence[] = {
156
157#if defined(CONFIG_BOARD_EARLY_INIT_F)
158 board_early_init_f,
159#endif
160 serial_init,
161
162 init_timebase,
163
164#if defined(CONFIG_CMD_AMBAPP)
165 ambapp_init_reloc,
166#endif
167
168 env_init,
169
170 init_baudrate,
171
172 console_init_f,
173 display_options,
174
175 checkcpu,
176 checkboard,
177#if defined(CONFIG_MISC_INIT_F)
178 misc_init_f,
179#endif
180
181#ifdef CONFIG_POST
182 post_init_f,
183#endif
184
185 NULL, /* Terminate this list,
186 * beware: this list will be relocated
187 * which means that NULL will become
188 * NULL+RELOC_OFFSET. We simply make
189 * NULL be -RELOC_OFFSET instead.
190 */
191};
192
193/************************************************************************
194 *
195 * This is the SPARC board initialization routine, running from RAM.
196 *
197 ************************************************************************
198 */
199#ifdef DEBUG_INIT_SEQUENCE
200char *str_init_seq = "INIT_SEQ 00\n";
201char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
202#endif
203
204void board_init_f(ulong bootflag)
205{
206 cmd_tbl_t *cmdtp;
207 bd_t *bd;
208 unsigned char *s;
209 init_fnc_t **init_fnc_ptr;
210 int j;
211 int i;
212 char *e;
213
214#ifndef CFG_NO_FLASH
215 ulong flash_size;
216#endif
217
218 gd = (gd_t *) (CFG_GBL_DATA_OFFSET);
219
220 /* Clear initial global data */
221 memset((void *)gd, 0, sizeof(gd_t));
222
223 gd->bd = (bd_t *) (gd + 1); /* At end of global data */
224 gd->baudrate = CONFIG_BAUDRATE;
225 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
226
227 bd = gd->bd;
228 bd->bi_memstart = CFG_RAM_BASE;
229 bd->bi_memsize = CFG_RAM_SIZE;
230 bd->bi_flashstart = CFG_FLASH_BASE;
231#if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
232 bd->bi_sramstart = CFG_SRAM_BASE;
233 bd->bi_sramsize = CFG_SRAM_SIZE;
234#endif
235 bd->bi_baudrate = CONFIG_BAUDRATE;
236 bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
237
238 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
239 gd->reloc_off = CFG_RELOC_MONITOR_BASE - CFG_MONITOR_BASE;
240
241 for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
242 ++init_fnc_ptr, j++) {
243#ifdef DEBUG_INIT_SEQUENCE
244 if (j > 9)
245 str_init_seq[9] = '0' + (j / 10);
246 str_init_seq[10] = '0' + (j - (j / 10) * 10);
247 serial_puts(str_init_seq);
248#endif
249 if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
250 hang();
251 }
252 }
253#ifdef DEBUG_INIT_SEQUENCE
254 serial_puts(str_init_seq_done);
255#endif
256
257 /*
258 * Now that we have DRAM mapped and working, we can
259 * relocate the code and continue running from DRAM.
260 *
261 * Reserve memory at end of RAM for (top down in that order):
262 * - kernel log buffer
263 * - protected RAM
264 * - LCD framebuffer
265 * - monitor code
266 * - board info struct
267 */
268#ifdef DEBUG_MEM_LAYOUT
269 printf("CFG_MONITOR_BASE: 0x%lx\n", CFG_MONITOR_BASE);
270 printf("CFG_ENV_ADDR: 0x%lx\n", CFG_ENV_ADDR);
271 printf("CFG_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CFG_RELOC_MONITOR_BASE,
272 CFG_MONITOR_LEN);
273 printf("CFG_MALLOC_BASE: 0x%lx (%d)\n", CFG_MALLOC_BASE,
274 CFG_MALLOC_LEN);
275 printf("CFG_INIT_SP_OFFSET: 0x%lx (%d)\n", CFG_INIT_SP_OFFSET,
276 CFG_STACK_SIZE);
277 printf("CFG_PROM_OFFSET: 0x%lx (%d)\n", CFG_PROM_OFFSET,
278 CFG_PROM_SIZE);
279 printf("CFG_GBL_DATA_OFFSET: 0x%lx (%d)\n", CFG_GBL_DATA_OFFSET,
280 CFG_GBL_DATA_SIZE);
281#endif
282
283#ifdef CONFIG_POST
284 post_bootmode_init();
285 post_run(NULL, POST_ROM | post_bootmode_get(0));
286#endif
287
288 /*
289 * We have to relocate the command table manually
290 */
291 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
292 ulong addr;
293 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
294#if DEBUG_COMMANDS
295 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
296 cmdtp->name, (ulong) (cmdtp->cmd), addr);
297#endif
298 cmdtp->cmd =
299 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
300
301 addr = (ulong) (cmdtp->name) + gd->reloc_off;
302 cmdtp->name = (char *)addr;
303
304 if (cmdtp->usage) {
305 addr = (ulong) (cmdtp->usage) + gd->reloc_off;
306 cmdtp->usage = (char *)addr;
307 }
308#ifdef CFG_LONGHELP
309 if (cmdtp->help) {
310 addr = (ulong) (cmdtp->help) + gd->reloc_off;
311 cmdtp->help = (char *)addr;
312 }
313#endif
314 }
315
316#if defined(CONFIG_CMD_AMBAPP) && defined(CFG_AMBAPP_PRINT_ON_STARTUP)
317 puts("AMBA:\n");
318 do_ambapp_print(NULL, 0, 0, NULL);
319#endif
320
321 /* initialize higher level parts of CPU like time base and timers */
322 cpu_init_r();
323
324 /* start timer */
325 timer_interrupt_init();
326
327 /*
328 * Enable Interrupts before any calls to udelay,
329 * the flash driver may use udelay resulting in
330 * a hang if not timer0 IRQ is enabled.
331 */
332 interrupt_init();
333
334#if !defined(CFG_NO_FLASH)
335 puts("FLASH: ");
336
337 if ((flash_size = flash_init()) > 0) {
338# ifdef CFG_FLASH_CHECKSUM
339 print_size(flash_size, "");
340 /*
341 * Compute and print flash CRC if flashchecksum is set to 'y'
342 *
343 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
344 */
345 s = getenv("flashchecksum");
346 if (s && (*s == 'y')) {
347 printf(" CRC: %08lX",
348 crc32(0, (const unsigned char *)CFG_FLASH_BASE,
349 flash_size)
350 );
351 }
352 putc('\n');
353# else /* !CFG_FLASH_CHECKSUM */
354 print_size(flash_size, "\n");
355# endif /* CFG_FLASH_CHECKSUM */
356 } else {
357 puts(failed);
358 hang();
359 }
360
361 bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
362 bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
363#if CFG_MONITOR_BASE == CFG_FLASH_BASE
364 bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */
365#else
366 bd->bi_flashoffset = 0;
367#endif
368#else /* CFG_NO_FLASH */
369 bd->bi_flashsize = 0;
370 bd->bi_flashstart = 0;
371 bd->bi_flashoffset = 0;
372#endif /* !CFG_NO_FLASH */
373
374 /* initialize malloc() area */
375 mem_malloc_init();
376
377 malloc_bin_reloc();
378
379#ifdef CONFIG_SPI
380# if !defined(CFG_ENV_IS_IN_EEPROM)
381 spi_init_f();
382# endif
383 spi_init_r();
384#endif
385
386 /* relocate environment function pointers etc. */
387 env_relocate();
388
389#if defined(CONFIG_BOARD_LATE_INIT)
390 board_late_init();
391#endif
392
393 s = getenv("ethaddr");
394 for (i = 0; i < 6; ++i) {
395 bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
396 if (s)
397 s = (*e) ? e + 1 : e;
398 }
399
400#ifdef CONFIG_HAS_ETH1
401 /* handle the 2nd ethernet address */
402
403 s = getenv("eth1addr");
404
405 for (i = 0; i < 6; ++i) {
406 bd->bi_enet1addr[i] = s ? simple_strtoul(s, &e, 16) : 0;
407 if (s)
408 s = (*e) ? e + 1 : e;
409 }
410#endif
411
412#ifdef CFG_ID_EEPROM
413 mac_read_from_eeprom();
414#endif
415
416 /* IP Address */
417 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
418#if defined(CONFIG_PCI)
419 /*
420 * Do pci configuration
421 */
422 pci_init();
423#endif
424
425 /* Initialize devices */
426 devices_init();
427
428 /* Initialize the jump table for applications */
429 jumptable_init();
430
431 /* Initialize the console (after the relocation and devices init) */
432 console_init_r();
433
434#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
435 serial_buffered_init();
436#endif
437
438#ifdef CONFIG_STATUS_LED
439 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
440#endif
441
442 udelay(20);
443
444 set_timer(0);
445
446 /* Initialize from environment */
447 if ((s = getenv("loadaddr")) != NULL) {
448 load_addr = simple_strtoul(s, NULL, 16);
449 }
450#if defined(CONFIG_CMD_NET)
451 if ((s = getenv("bootfile")) != NULL) {
452 copy_filename(BootFile, s, sizeof(BootFile));
453 }
454#endif /* CFG_CMD_NET */
455
456 WATCHDOG_RESET();
457
458#if defined(CONFIG_CMD_DOC)
459 WATCHDOG_RESET();
460 puts("DOC: ");
461 doc_init();
462#endif
463
464#if defined(CONFIG_CMD_NET)
465#if defined(CONFIG_NET_MULTI)
466 WATCHDOG_RESET();
467 puts("Net: ");
468#endif
469 eth_initialize(bd);
470#endif
471
472#if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
473 WATCHDOG_RESET();
474 debug("Reset Ethernet PHY\n");
475 reset_phy();
476#endif
477
478#ifdef CONFIG_POST
479 post_run(NULL, POST_RAM | post_bootmode_get(0));
480#endif
481
482#if defined(CONFIG_CMD_IDE)
483 WATCHDOG_RESET();
484 puts("IDE: ");
485 ide_init();
486#endif /* CFG_CMD_IDE */
487
488#ifdef CONFIG_LAST_STAGE_INIT
489 WATCHDOG_RESET();
490 /*
491 * Some parts can be only initialized if all others (like
492 * Interrupts) are up and running (i.e. the PC-style ISA
493 * keyboard).
494 */
495 last_stage_init();
496#endif
497
498#ifdef CONFIG_PS2KBD
499 puts("PS/2: ");
500 kbd_init();
501#endif
502 prom_init();
503
504 /* main_loop */
505 for (;;) {
506 WATCHDOG_RESET();
507 main_loop();
508 }
509
510}
511
512void hang(void)
513{
514 puts("### ERROR ### Please RESET the board ###\n");
515#ifdef CONFIG_SHOW_BOOT_PROGRESS
516 show_boot_progress(-30);
517#endif
518 for (;;) ;
519}
520
521/************************************************************************/