summaryrefslogtreecommitdiff
path: root/board/bf533-stamp/bf533-stamp.c
blob: 69e425bf974e7cf69a96d31067feca236416d3a4 (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
/*
 * U-boot - stamp.c STAMP board specific 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 <asm/mem_init.h>
#include <asm/io.h>
#include "bf533-stamp.h"

DECLARE_GLOBAL_DATA_PTR;

#define STATUS_LED_OFF 0
#define STATUS_LED_ON  1

#ifdef CONFIG_SHOW_BOOT_PROGRESS
# define SHOW_BOOT_PROGRESS(arg)	show_boot_progress(arg)
#else
# define SHOW_BOOT_PROGRESS(arg)
#endif

int checkboard(void)
{
#if (BFIN_CPU == ADSP_BF531)
	printf("CPU:   ADSP BF531 Rev.: 0.%d\n", *pCHIPID >> 28);
#elif (BFIN_CPU == ADSP_BF532)
	printf("CPU:   ADSP BF532 Rev.: 0.%d\n", *pCHIPID >> 28);
#else
	printf("CPU:   ADSP BF533 Rev.: 0.%d\n", *pCHIPID >> 28);
#endif
	printf("Board: ADI BF533 Stamp board\n");
	printf("       Support: http://blackfin.uclinux.org/\n");
	return 0;
}

long int initdram(int board_type)
{
#ifdef DEBUG
	printf("SDRAM attributes:\n");
	printf
	    ("  tRCD:%d Cycles; tRP:%d Cycles; tRAS:%d Cycles; tWR:%d Cycles; "
	     "CAS Latency:%d cycles\n", (SDRAM_tRCD >> 15), (SDRAM_tRP >> 11),
	     (SDRAM_tRAS >> 6), (SDRAM_tWR >> 19), (SDRAM_CL >> 2));
	printf("SDRAM Begin: 0x%x\n", CFG_SDRAM_BASE);
	printf("Bank size = %d MB\n", 128);
#endif
	gd->bd->bi_memstart = CFG_SDRAM_BASE;
	gd->bd->bi_memsize = CFG_MAX_RAM_SIZE;
	return (gd->bd->bi_memsize);
}

void swap_to(int device_id)
{

	if (device_id == ETHERNET) {
		*pFIO_DIR = PF0;
		sync();
		*pFIO_FLAG_S = PF0;
		sync();
	} else if (device_id == FLASH) {
		*pFIO_DIR = (PF4 | PF3 | PF2 | PF1 | PF0);
		*pFIO_FLAG_S = (PF4 | PF3 | PF2);
		*pFIO_MASKA_D = (PF8 | PF6 | PF5);
		*pFIO_MASKB_D = (PF7);
		*pFIO_POLAR = (PF8 | PF6 | PF5);
		*pFIO_EDGE = (PF8 | PF7 | PF6 | PF5);
		*pFIO_INEN = (PF8 | PF7 | PF6 | PF5);
		*pFIO_FLAG_D = (PF4 | PF3 | PF2);
		sync();
	} else {
		printf("Unknown bank to switch\n");
	}

	return;
}

#if defined(CONFIG_MISC_INIT_R)
/* miscellaneous platform dependent initialisations */
int misc_init_r(void)
{
	int i;
	int cf_stat = 0;

	/* Check whether CF card is inserted */
	*pFIO_EDGE = FIO_EDGE_CF_BITS;
	*pFIO_POLAR = FIO_POLAR_CF_BITS;
	for (i = 0; i < 0x300; i++)
		asm("nop;");

	if ((*pFIO_FLAG_S) & CF_STAT_BITS) {
		cf_stat = 0;
	} else {
		cf_stat = 1;
	}

	*pFIO_EDGE = FIO_EDGE_BITS;
	*pFIO_POLAR = FIO_POLAR_BITS;

	if (cf_stat) {
		printf("Booting from COMPACT flash\n");

		/* Set cycle time for CF */
		*(volatile unsigned long *)ambctl1 = CF_AMBCTL1VAL;

		for (i = 0; i < 0x1000; i++)
			asm("nop;");
		for (i = 0; i < 0x1000; i++)
			asm("nop;");
		for (i = 0; i < 0x1000; i++)
			asm("nop;");

		serial_setbrg();
		ide_init();

		setenv("bootargs", "");
		setenv("bootcmd",
		       "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000");
	} else {
		printf("Booting from FLASH\n");
	}

	return 0;
}
#endif

#ifdef CONFIG_STAMP_CF

void cf_outb(unsigned char val, volatile unsigned char *addr)
{
	/*
	 * Set PF1 PF0 respectively to 0 1 to divert address
	 * to the expansion memory banks
	 */
	*pFIO_FLAG_S = CF_PF0;
	*pFIO_FLAG_C = CF_PF1;
	sync();

	*(addr) = val;
	sync();

	/* Setback PF1 PF0 to 0 0 to address external
	 * memory banks  */
	*(volatile unsigned short *)pFIO_FLAG_C = CF_PF1_PF0;
	sync();
}

unsigned char cf_inb(volatile unsigned char *addr)
{
	volatile unsigned char c;

	*pFIO_FLAG_S = CF_PF0;
	*pFIO_FLAG_C = CF_PF1;
	sync();

	c = *(addr);
	sync();

	*pFIO_FLAG_C = CF_PF1_PF0;
	sync();

	return c;
}

void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
{
	int i;

	*pFIO_FLAG_S = CF_PF0;
	*pFIO_FLAG_C = CF_PF1;
	sync();

	for (i = 0; i < words; i++) {
		*(sect_buf + i) = *(addr);
		sync();
	}

	*pFIO_FLAG_C = CF_PF1_PF0;
	sync();
}

void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
{
	int i;

	*pFIO_FLAG_S = CF_PF0;
	*pFIO_FLAG_C = CF_PF1;
	sync();

	for (i = 0; i < words; i++) {
		*(addr) = *(sect_buf + i);
		sync();
	}

	*pFIO_FLAG_C = CF_PF1_PF0;
	sync();
}
#endif

void stamp_led_set(int LED1, int LED2, int LED3)
{
	*pFIO_INEN &= ~(PF2 | PF3 | PF4);
	*pFIO_DIR |= (PF2 | PF3 | PF4);

	if (LED1 == STATUS_LED_OFF)
		*pFIO_FLAG_S = PF2;
	else
		*pFIO_FLAG_C = PF2;
	if (LED2 == STATUS_LED_OFF)
		*pFIO_FLAG_S = PF3;
	else
		*pFIO_FLAG_C = PF3;
	if (LED3 == STATUS_LED_OFF)
		*pFIO_FLAG_S = PF4;
	else
		*pFIO_FLAG_C = PF4;
	sync();
}

void show_boot_progress(int status)
{
	switch (status) {
	case 1:
		stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON);
		break;
	case 2:
		stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF);
		break;
	case 3:
		stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON);
		break;
	case 4:
		stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF);
		break;
	case 5:
	case 6:
		stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON);
		break;
	case 7:
	case 8:
		stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF);
		break;
	case 9:
	case 10:
	case 11:
	case 12:
	case 13:
	case 14:
	case 15:
		stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_OFF);
		break;
	default:
		stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON);
		break;
	}
}