summaryrefslogtreecommitdiff
path: root/lib_blackfin/board.c
blob: d359710804835b09c319ba7183c6298e59600b81 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
/*
 * U-boot - board.c First C file to be called contains init routines
 *
 * Copyright (c) 2005-2007 Analog Devices Inc.
 *
 * (C) Copyright 2000-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

#include <common.h>
#include <command.h>
#include <malloc.h>
#include <devices.h>
#include <version.h>
#include <net.h>
#include <environment.h>
#include <i2c.h>
#include "blackfin_board.h"
#include <asm/cplb.h>
#include "../drivers/smc91111.h"

#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
#include <post.h>
int post_flag;
#endif

#ifndef CFG_NO_FLASH
extern flash_info_t flash_info[];
#endif

static inline u_long get_vco(void)
{
	u_long msel;
	u_long vco;

	msel = (*pPLL_CTL >> 9) & 0x3F;
	if (0 == msel)
		msel = 64;

	vco = CONFIG_CLKIN_HZ;
	vco >>= (1 & *pPLL_CTL);	/* DF bit */
	vco = msel * vco;
	return vco;
}

/*Get the Core clock*/
u_long get_cclk(void)
{
	u_long csel, ssel;
	if (*pPLL_STAT & 0x1)
		return CONFIG_CLKIN_HZ;

	ssel = *pPLL_DIV;
	csel = ((ssel >> 4) & 0x03);
	ssel &= 0xf;
	if (ssel && ssel < (1 << csel))	/* SCLK > CCLK */
		return get_vco() / ssel;
	return get_vco() >> csel;
}

/* Get the System clock */
u_long get_sclk(void)
{
	u_long ssel;

	if (*pPLL_STAT & 0x1)
		return CONFIG_CLKIN_HZ;

	ssel = (*pPLL_DIV & 0xf);

	return get_vco() / ssel;
}

static void mem_malloc_init(void)
{
	mem_malloc_start = CFG_MALLOC_BASE;
	mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN);
	mem_malloc_brk = mem_malloc_start;
	memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
}

void *sbrk(ptrdiff_t increment)
{
	ulong old = mem_malloc_brk;
	ulong new = old + increment;

	if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
		return (NULL);
	}
	mem_malloc_brk = new;

	return ((void *)old);
}

static int display_banner(void)
{
	sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
	printf("%s\n", version_string);
	return (0);
}

static void display_flash_config(ulong size)
{
	puts("FLASH:  ");
	print_size(size, "\n");
	return;
}

static int init_baudrate(void)
{
	DECLARE_GLOBAL_DATA_PTR;

	char tmp[64];
	int i = getenv_r("baudrate", tmp, sizeof(tmp));
	gd->bd->bi_baudrate = gd->baudrate = (i > 0)
	    ? (int)simple_strtoul(tmp, NULL, 10)
	    : CONFIG_BAUDRATE;
	return (0);
}

#ifdef DEBUG
static void display_global_data(void)
{
	DECLARE_GLOBAL_DATA_PTR;
	bd_t *bd;
	bd = gd->bd;
	printf("--flags:%x\n", gd->flags);
	printf("--board_type:%x\n", gd->board_type);
	printf("--baudrate:%x\n", gd->baudrate);
	printf("--have_console:%x\n", gd->have_console);
	printf("--ram_size:%x\n", gd->ram_size);
	printf("--reloc_off:%x\n", gd->reloc_off);
	printf("--env_addr:%x\n", gd->env_addr);
	printf("--env_valid:%x\n", gd->env_valid);
	printf("--bd:%x %x\n", gd->bd, bd);
	printf("---bi_baudrate:%x\n", bd->bi_baudrate);
	printf("---bi_ip_addr:%x\n", bd->bi_ip_addr);
	printf("---bi_enetaddr:%x %x %x %x %x %x\n",
	       bd->bi_enetaddr[0],
	       bd->bi_enetaddr[1],
	       bd->bi_enetaddr[2],
	       bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
	printf("---bi_arch_number:%x\n", bd->bi_arch_number);
	printf("---bi_boot_params:%x\n", bd->bi_boot_params);
	printf("---bi_memstart:%x\n", bd->bi_memstart);
	printf("---bi_memsize:%x\n", bd->bi_memsize);
	printf("---bi_flashstart:%x\n", bd->bi_flashstart);
	printf("---bi_flashsize:%x\n", bd->bi_flashsize);
	printf("---bi_flashoffset:%x\n", bd->bi_flashoffset);
	printf("--jt:%x *:%x\n", gd->jt, *(gd->jt));
}
#endif

/* we cover everything with 4 meg pages, and need an extra for L1 */
unsigned int icplb_table[page_descriptor_table_size][2];
unsigned int dcplb_table[page_descriptor_table_size][2];

void init_cplbtables(void)
{
	int i, j;

	j = 0;
	icplb_table[j][0] = 0xFFA00000;
	icplb_table[j][1] = L1_IMEMORY;
	j++;

	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
		icplb_table[j][0] = (i * 4 * 1024 * 1024);
		if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
		    && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
			icplb_table[j][1] = SDRAM_IKERNEL;
		} else {
			icplb_table[j][1] = SDRAM_IGENERIC;
		}
		j++;
	}
#if defined(CONFIG_BF561)
	/* MAC space */
	icplb_table[j][0] = 0x2C000000;
	icplb_table[j][1] = SDRAM_INON_CHBL;
	j++;
	/* Async Memory space */
	for (i = 0; i < 3; i++) {
		icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
		icplb_table[j][1] = SDRAM_INON_CHBL;
		j++;
	}
#else
	icplb_table[j][0] = 0x20000000;
	icplb_table[j][1] = SDRAM_INON_CHBL;
#endif
	j = 0;
	dcplb_table[j][0] = 0xFF800000;
	dcplb_table[j][1] = L1_DMEMORY;
	j++;

	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
		dcplb_table[j][0] = (i * 4 * 1024 * 1024);
		if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
		    && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
			dcplb_table[j][1] = SDRAM_DKERNEL;
		} else {
			dcplb_table[j][1] = SDRAM_DGENERIC;
		}
		j++;
	}

#if defined(CONFIG_BF561)
	/* MAC space */
	dcplb_table[j][0] = 0x2C000000;
	dcplb_table[j][1] = SDRAM_EBIU;
	j++;

	/* Flash space */
	for (i = 0; i < 3; i++) {
		dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
		dcplb_table[j][1] = SDRAM_EBIU;
		j++;
	}
#else
	dcplb_table[j][0] = 0x20000000;
	dcplb_table[j][1] = SDRAM_EBIU;
#endif
}

/*
 * All attempts to come up with a "common" initialization sequence
 * that works for all boards and architectures failed: some of the
 * requirements are just _too_ different. To get rid of the resulting
 * mess of board dependend #ifdef'ed code we now make the whole
 * initialization sequence configurable to the user.
 *
 * The requirements for any new initalization function is simple: it
 * receives a pointer to the "global data" structure as it's only
 * argument, and returns an integer return code, where 0 means
 * "continue" and != 0 means "fatal error, hang the system".
 */

void board_init_f(ulong bootflag)
{
	DECLARE_GLOBAL_DATA_PTR;
	ulong addr;
	bd_t *bd;
	int i;

	init_cplbtables();

	gd = (gd_t *) (CFG_GBL_DATA_ADDR);
	memset((void *)gd, 0, sizeof(gd_t));

	/* Board data initialization */
	addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));

	/* Align to 4 byte boundary */
	addr &= ~(4 - 1);
	bd = (bd_t *) addr;
	gd->bd = bd;
	memset((void *)bd, 0, sizeof(bd_t));

	/* Initialize */
	init_IRQ();
	env_init();		/* initialize environment */
	init_baudrate();	/* initialze baudrate settings */
	serial_init();		/* serial communications setup */
	console_init_f();
#ifdef CONFIG_ICACHE_ON
	icache_enable();
#endif
#ifdef CONFIG_DCACHE_ON
	dcache_enable();
#endif
	display_banner();	/* say that we are here */

	for (i = 0; i < page_descriptor_table_size; i++) {
		debug
		    ("data (%02i)= 0x%08x : 0x%08x    intr = 0x%08x : 0x%08x\n",
		     i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
		     icplb_table[i][1]);
	}

	checkboard();
#if defined(CONFIG_RTC_BF533) && ((CONFIG_COMMANDS & CFG_CMD_DATE) || defined(CONFIG_CMD_DATE))
	rtc_init();
#endif
	timer_init();
	printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
	       get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
	printf("SDRAM: ");
	print_size(initdram(0), "\n");
#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
	post_init_f();
	post_bootmode_init();
	post_run(NULL, POST_ROM | post_bootmode_get(0));
#endif
	board_init_r((gd_t *) gd, 0x20000010);
}

#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
static int init_func_i2c(void)
{
	puts("I2C:   ");
	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
	puts("ready\n");
	return (0);
}
#endif

void board_init_r(gd_t * id, ulong dest_addr)
{
	DECLARE_GLOBAL_DATA_PTR;
	ulong size;
	extern void malloc_bin_reloc(void);
	char *s, *e;
	bd_t *bd;
	int i;
	gd = id;
	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
	bd = gd->bd;

#if    defined(CONFIG_BF537) && defined(CONFIG_POST)
	post_output_backlog();
	post_reloc();
#endif

#if	(CONFIG_STAMP || CONFIG_BF537 || CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
	/* There are some other pointer constants we must deal with */
	/* configure available FLASH banks */
	size = flash_init();
	display_flash_config(size);
	flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE,
		      CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
	bd->bi_flashstart = CFG_FLASH_BASE;
	bd->bi_flashsize = size;
	bd->bi_flashoffset = 0;
#else
	bd->bi_flashstart = 0;
	bd->bi_flashsize = 0;
	bd->bi_flashoffset = 0;
#endif
	/* initialize malloc() area */
	mem_malloc_init();
	malloc_bin_reloc();

#ifdef CONFIG_SPI
# if ! defined(CFG_ENV_IS_IN_EEPROM)
	spi_init_f();
# endif
	spi_init_r();
#endif

	/* relocate environment function pointers etc. */
	env_relocate();

	/* board MAC address */
	s = getenv("ethaddr");
	for (i = 0; i < 6; ++i) {
		bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
		if (s)
			s = (*e) ? e + 1 : e;
	}

	/* IP Address */
	bd->bi_ip_addr = getenv_IPaddr("ipaddr");

	/* Initialize devices */
	devices_init();
	jumptable_init();

	/* Initialize the console (after the relocation and devices init) */
	console_init_r();

	/* Initialize from environment */
	if ((s = getenv("loadaddr")) != NULL) {
		load_addr = simple_strtoul(s, NULL, 16);
	}
#if (CONFIG_COMMANDS & CFG_CMD_NET) || defined(CONFIG_CMD_NET)
	if ((s = getenv("bootfile")) != NULL) {
		copy_filename(BootFile, s, sizeof(BootFile));
	}
#endif

#if (CONFIG_COMMANDS & CFG_CMD_NAND) || defined(CONFIG_CMD_NAND)
	puts("NAND:  ");
	nand_init();		/* go init the NAND */
#endif

#if defined(CONFIG_MISC_INIT_R)
	/* miscellaneous platform dependent initialisations */
	misc_init_r();
#endif

#if ((BFIN_CPU == ADSP_BF537) || (BFIN_CPU == ADSP_BF536))
	printf("Net:    ");
	eth_initialize(bd);
#endif

#ifdef CONFIG_DRIVER_SMC91111
#ifdef SHARED_RESOURCES
	/* Switch to Ethernet */
	swap_to(ETHERNET);
#endif
	if ((SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT) {
		printf("ERROR: Can't find SMC91111 at address %x\n",
		       SMC_BASE_ADDRESS);
	} else {
		printf("Net:   SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
	}

#ifdef SHARED_RESOURCES
	swap_to(FLASH);
#endif
#endif
#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
	init_func_i2c();
#endif

#ifdef DEBUG
	display_global_data();
#endif

#if defined(CONFIG_BF537) && defined(CONFIG_POST)
	if (post_flag)
		post_run(NULL, POST_RAM | post_bootmode_get(0));
#endif

	/* main_loop() can return to retry autoboot, if so just run it again. */
	for (;;) {
		main_loop();
	}
}

void hang(void)
{
	puts("### ERROR ### Please RESET the board ###\n");
	for (;;) ;
}