summaryrefslogtreecommitdiff
path: root/board/digsy_mtc/digsy_mtc.c
blob: afb09480571406ebb9b5c7a322d3422640dd0225 (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
/*
 * (C) Copyright 2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2004
 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
 *
 * (C) Copyright 2005-2009
 * Modified for InterControl digsyMTC MPC5200 board by
 * Frank Bodammer, GCD Hard- & Software GmbH,
 *                 frank.bodammer@gcd-solutions.de
 *
 * (C) Copyright 2009
 * Grzegorz Bernacki, Semihalf, gjb@semihalf.com
 *
 * 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 <mpc5xxx.h>
#include <net.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/io.h>
#include "eeprom.h"
#if defined(CONFIG_DIGSY_REV5)
#include "is45s16800a2.h"
#include <mtd/cfi_flash.h>
#else
#include "is42s16800a-7t.h"
#endif
#include <libfdt.h>

DECLARE_GLOBAL_DATA_PTR;

extern int usb_cpu_init(void);

#if defined(CONFIG_DIGSY_REV5)
/*
 * The M29W128GH needs a specail reset command function,
 * details see the doc/README.cfi file
 */
void flash_cmd_reset(flash_info_t *info)
{
	flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
}
#endif

#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start(int hi_addr)
{
	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
	long control = SDRAM_CONTROL | hi_addr_bit;

	/* unlock mode register */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);

	/* precharge all banks */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);

	/* auto refresh */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);

	/* set mode register */
	out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);

	/* normal operation */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
}
#endif

/*
 * ATTENTION: Although partially referenced initdram does NOT make real use
 *            use of CONFIG_SYS_SDRAM_BASE. The code does not work if
 *            CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
 */

phys_size_t initdram(int board_type)
{
	ulong dramsize = 0;
	ulong dramsize2 = 0;
	uint svr, pvr;
#ifndef CONFIG_SYS_RAMBOOT
	ulong test1, test2;

	/* setup SDRAM chip selects */
	out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001C); /* 512MB at 0x0 */
	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */

	/* setup config registers */
	out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
	out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);

	/* find RAM size using SDRAM CS0 only */
	sdram_start(0);
	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
	sdram_start(1);
	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
	if (test1 > test2) {
		sdram_start(0);
		dramsize = test1;
	} else {
		dramsize = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize < (1 << 20))
		dramsize = 0;

	/* set SDRAM CS0 size according to the amount of RAM found */
	if (dramsize > 0) {
		out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
	} else {
		out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
	}

	/* let SDRAM CS1 start right after CS0 */
	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C);

	/* find RAM size using SDRAM CS1 only */
	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize),
			0x08000000);
		dramsize2 = test1;

	/* memory smaller than 1MB is impossible */
	if (dramsize2 < (1 << 20))
		dramsize2 = 0;

	/* set SDRAM CS1 size according to the amount of RAM found */
	if (dramsize2 > 0) {
		out_be32((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize |
			(0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
	} else {
		out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
	}

#else /* CONFIG_SYS_RAMBOOT */

	/* retrieve size of memory connected to SDRAM CS0 */
	dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
	if (dramsize >= 0x13)
		dramsize = (1 << (dramsize - 0x13)) << 20;
	else
		dramsize = 0;

	/* retrieve size of memory connected to SDRAM CS1 */
	dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
	if (dramsize2 >= 0x13)
		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
	else
		dramsize2 = 0;

#endif /* CONFIG_SYS_RAMBOOT */

	/*
	 * On MPC5200B we need to set the special configuration delay in the
	 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
	 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
	 *
	 * "The SDelay should be written to a value of 0x00000004. It is
	 * required to account for changes caused by normal wafer processing
	 * parameters."
	 */
	svr = get_svr();
	pvr = get_pvr();
	if ((SVR_MJREV(svr) >= 2) &&
	    (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4))
		out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);

	return dramsize + dramsize2;
}

int checkboard(void)
{
	char *s = getenv("serial#");

	puts ("Board: InterControl digsyMTC");
#if defined(CONFIG_DIGSY_REV5)
	puts (" rev5");
#endif
	if (s != NULL) {
		puts(", ");
		puts(s);
	}
	putc('\n');

	return 0;
}

int board_early_init_r(void)
{
#ifdef CONFIG_MPC52XX_SPI
	struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt*)MPC5XXX_GPT;
#endif
	/*
	 * Now, when we are in RAM, enable flash write access for detection
	 * process.  Note that CS_BOOT cannot be cleared when executing in
	 * flash.
	 */
	/* disable CS_BOOT */
	clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25));
	/* enable CS1 */
	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17));
	/* enable CS0 */
	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16));

#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
	/* Low level USB init, required for proper kernel operation */
	usb_cpu_init();
#endif
#ifdef CONFIG_MPC52XX_SPI
	/* GPT 6 Output Enable */
	out_be32(&gpt[6].emsr, 0x00000034);
	/* GPT 7 Output Enable */
	out_be32(&gpt[7].emsr, 0x00000034);
#endif

	return (0);
}

void board_get_enetaddr (uchar * enet)
{
	ushort read = 0;
	ushort addr_of_eth_addr = 0;
	ushort len_sys = 0;
	ushort len_sys_cfg = 0;

	/* check identification word */
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2);
	if (read != EEPROM_IDENT)
		return;

	/* calculate offset of config area */
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2);
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG,
		(uchar *)&len_sys_cfg, 2);
	addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1;
	if (addr_of_eth_addr >= EEPROM_LEN)
		return;

	eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6);
}

int misc_init_r(void)
{
	uchar enetaddr[6];

	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
		board_get_enetaddr(enetaddr);
		eth_setenv_enetaddr("ethaddr", enetaddr);
	}

	return 0;
}

#ifdef CONFIG_PCI
static struct pci_controller hose;

extern void pci_mpc5xxx_init(struct pci_controller *);

void pci_init_board(void)
{
	pci_mpc5xxx_init(&hose);
}
#endif

#ifdef CONFIG_CMD_IDE

#ifdef CONFIG_IDE_RESET

void init_ide_reset(void)
{
	debug ("init_ide_reset\n");

	/* set gpio output value to 1 */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

}

void ide_set_reset(int idereset)
{
	debug ("ide_reset(%d)\n", idereset);

	/* set gpio output value to 0 */
	clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

	udelay(10000);

	/* set gpio output value to 1 */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
}
#endif /* CONFIG_IDE_RESET */
#endif /* CONFIG_CMD_IDE */

#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
static void ft_delete_node(void *fdt, const char *compat)
{
	int off = -1;
	int ret;

	off = fdt_node_offset_by_compatible(fdt, -1, compat);
	if (off < 0) {
		printf("Could not find %s node.\n", compat);
		return;
	}

	ret = fdt_del_node(fdt, off);
	if (ret < 0)
		printf("Could not delete %s node.\n", compat);
}
#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
static void ft_adapt_flash_base(void *blob)
{
	flash_info_t	*dev = &flash_info[0];
	int off;
	struct fdt_property *prop;
	int len;
	u32 *reg, *reg2;

	off = fdt_node_offset_by_compatible(blob, -1, "fsl,mpc5200b-lpb");
	if (off < 0) {
		printf("Could not find fsl,mpc5200b-lpb node.\n");
		return;
	}

	/* found compatible property */
	prop = fdt_get_property_w(blob, off, "ranges", &len);
	if (prop) {
		reg = reg2 = (u32 *)&prop->data[0];

		reg[2] = dev->start[0];
		reg[3] = dev->size;
		fdt_setprop(blob, off, "ranges", reg2, len);
	} else
		printf("Could not find ranges\n");
}

extern ulong flash_get_size (phys_addr_t base, int banknum);

/* Update the Flash Baseaddr settings */
int update_flash_size (int flash_size)
{
	volatile struct mpc5xxx_mmap_ctl *mm =
		(struct mpc5xxx_mmap_ctl *) CONFIG_SYS_MBAR;
	flash_info_t	*dev;
	int	i;
	int size = 0;
	unsigned long base = 0x0;
	u32 *cs_reg = (u32 *)&mm->cs0_start;

	for (i = 0; i < 2; i++) {
		dev = &flash_info[i];

		if (dev->size) {
			/* calculate new base addr for this chipselect */
			base -= dev->size;
			out_be32(cs_reg, START_REG(base));
			cs_reg++;
			out_be32(cs_reg, STOP_REG(base, dev->size));
			cs_reg++;
			/* recalculate the sectoraddr in the cfi driver */
			size += flash_get_size(base, i);
		}
	}
	gd->bd->bi_flashstart = base;
	return 0;
}
#endif /* defined(CONFIG_SYS_UPDATE_FLASH_SIZE) */

void ft_board_setup(void *blob, bd_t *bd)
{
	ft_cpu_setup(blob, bd);
	/*
	 * There are 2 RTC nodes in the DTS, so remove
	 * the unneeded node here.
	 */
#if defined(CONFIG_DIGSY_REV5)
	ft_delete_node(blob, "dallas,ds1339");
#else
	ft_delete_node(blob, "mc,rv3029c2");
#endif
#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
	ft_adapt_flash_base(blob);
#endif
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */