summaryrefslogtreecommitdiff
path: root/lib_blackfin/board.c
blob: d9dc2b6d0cf9a254bf422b7375cfe256c65eae2f (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
/*
 * U-boot - board.c First C file to be called contains init routines
 *
 * Copyright (c) 2005 blackfin.uclinux.org
 *
 * (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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

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

DECLARE_GLOBAL_DATA_PTR;

extern flash_info_t flash_info[];


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)
{
	uchar 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)
{
	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

/*
 * 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)
{
	ulong addr;
	bd_t *bd;

	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();
	display_banner();	/* say that we are here */
	checkboard();
#if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE)
	rtc_init();
#endif
	timer_init();
	printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \
	CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000);
	printf("SDRAM: ");
	print_size(initdram(0), "\n");
	board_init_r((gd_t *) gd, 0x20000010);
}

void board_init_r(gd_t * id, ulong dest_addr)
{
	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	CONFIG_STAMP
	/* 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();

	/* 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)
	if ((s = getenv("bootfile")) != NULL) {
		copy_filename(BootFile, s, sizeof(BootFile));
	}
#endif
#if defined(CONFIG_MISC_INIT_R)
	/* miscellaneous platform dependent initialisations */
	misc_init_r();
#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
#ifdef CONFIG_SOFT_I2C
	init_func_i2c();
#endif

#ifdef DEBUG
	display_global_data(void);
#endif

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

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

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