summaryrefslogtreecommitdiff
path: root/board/cray/L1/L1.c
blob: 77f7f48a6ecb3f2a9234783ec65538d50f87f576 (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
/*
 * (C) Copyright 2000
 * 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 <asm/processor.h>
#include <4xx_i2c.h>
#include <command.h>
#include <rtc.h>
#include <post.h>
#include <net.h>
#include <malloc.h>

#define L1_MEMSIZE (32*1024*1024)

/* the std. DHCP stufff */
#define DHCP_ROUTER       3
#define DHCP_NETMASK      1
#define DHCP_BOOTFILE     67
#define DHCP_ROOTPATH     17
#define DHCP_HOSTNAME     12

/* some extras used by CRAY
 *
 * on the server this looks like:
 *
 * option L1-initrd-image code 224 = string;
 * option L1-initrd-image "/opt/craysv2/craymcu/l1/flash/initrd.image"
 */
#define DHCP_L1_INITRD  224

/* new, [better?] way via official vendor-extensions, defining an option
 * space.
 * on the server this looks like:
 *
 * option space CRAYL1;
 * option CRAYL1.initrd     code 3 = string;
 * ..etc...
 */
#define DHCP_VENDOR_SPECX   43
#define DHCP_VX_INITRD       3
#define DHCP_VX_BOOTCMD      4
#define DHCP_VX_BOOTARGS     5
#define DHCP_VX_ROOTDEV      6
#define DHCP_VX_FROMFLASH    7
#define DHCP_VX_BOOTSCRIPT   8
#define DHCP_VX_RCFILE	     9
#define DHCP_VX_MAGIC        10

/* Things DHCP server can tellme about.  If there's no flash address, then
 * they dont participate in 'update' to flash, and we force their values
 * back to '0' every boot to be sure to get them fresh from DHCP.  Yes, I
 * know this is a pain...
 *
 * If I get no bootfile, boot from flash.  If rootpath, use that.  If no
 * rootpath use initrd in flash.
 */
typedef struct dhcp_item_s {
	u8 dhcp_option;
	u8 dhcp_vendor_option;
	char *dhcpvalue;
	char *envname;
} dhcp_item_t;
static dhcp_item_t Things[] = {
	{DHCP_ROUTER, 0, NULL, "gateway"},
	{DHCP_NETMASK, 0, NULL, "netmask"},
	{DHCP_BOOTFILE, 0, NULL, "bootfile"},
	{DHCP_ROOTPATH, 0, NULL, "rootpath"},
	{DHCP_HOSTNAME, 0, NULL, "hostname"},
	{DHCP_L1_INITRD, 0, NULL, "initrd"},
/* and the other way.. */
	{DHCP_VENDOR_SPECX, DHCP_VX_INITRD, NULL, "initrd"},
	{DHCP_VENDOR_SPECX, DHCP_VX_BOOTCMD, NULL, "bootcmd"},
	{DHCP_VENDOR_SPECX, DHCP_VX_FROMFLASH, NULL, "fromflash"},
	{DHCP_VENDOR_SPECX, DHCP_VX_BOOTSCRIPT, NULL, "bootscript"},
	{DHCP_VENDOR_SPECX, DHCP_VX_RCFILE, NULL, "rcfile"},
	{DHCP_VENDOR_SPECX, DHCP_VX_BOOTARGS, NULL, "xbootargs"},
	{DHCP_VENDOR_SPECX, DHCP_VX_ROOTDEV, NULL, NULL},
	{DHCP_VENDOR_SPECX, DHCP_VX_MAGIC, NULL, NULL}
};

#define N_THINGS ((sizeof(Things))/(sizeof(dhcp_item_t)))

extern char bootscript[];

/* Here is the boot logic as HUSH script. Overridden by any TFP provided
 * bootscript file.
 */

static void init_sdram (void);

/* ------------------------------------------------------------------------- */
int board_early_init_f (void)
{
	/* Running from ROM: global data is still READONLY */
	init_sdram ();
	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
	mtdcr (uicer, 0x00000000);	/* disable all ints */
	mtdcr (uiccr, 0x00000020);	/* set all but FPGA SMI to be non-critical */
	mtdcr (uicpr, 0xFFFFFFE0);	/* set int polarities */
	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
	mtdcr (uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
	return 0;
}

/* ------------------------------------------------------------------------- */
int checkboard (void)
{
	return (0);
}
/* ------------------------------------------------------------------------- */

/* ------------------------------------------------------------------------- */
int misc_init_r (void)
{
	char *s, *e;
	image_header_t *hdr;
	time_t timestamp;
	struct rtc_time tm;
	char bootcmd[32];

	hdr = (image_header_t *) (CFG_MONITOR_BASE - image_get_header_size ());
#if defined(CONFIG_FIT)
	if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
		puts ("Non legacy image format not supported\n");
		return -1;
	}
#endif

	timestamp = (time_t)image_get_time (hdr);
	to_tm (timestamp, &tm);
	printf ("Welcome to U-Boot on Cray L1. Compiled %4d-%02d-%02d  %2d:%02d:%02d (UTC)\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);

#define FACTORY_SETTINGS 0xFFFC0000
	if ((s = getenv ("ethaddr")) == NULL) {
		e = (char *) (FACTORY_SETTINGS);
		if (*(e + 0) != '0'
			|| *(e + 1) != '0'
			|| *(e + 2) != ':'
			|| *(e + 3) != '4' || *(e + 4) != '0' || *(e + 17) != '\0') {
			printf ("No valid MAC address in flash location 0x3C0000!\n");
		} else {
			printf ("Factory MAC: %s\n", e);
			setenv ("ethaddr", e);
		}
	}
	sprintf (bootcmd,"autoscript %X",(unsigned)bootscript);
	setenv ("bootcmd", bootcmd);
	return (0);
}

/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
	return (L1_MEMSIZE);
}

/* ------------------------------------------------------------------------- */
/* stubs so we can print dates w/o any nvram RTC.*/
void rtc_get (struct rtc_time *tmp)
{
	return;
}
void rtc_set (struct rtc_time *tmp)
{
	return;
}
void rtc_reset (void)
{
	return;
}

/* ------------------------------------------------------------------------- */
/*  Do sdram bank init in C so I can read it..no console to print to yet!
 */
static void init_sdram (void)
{
 unsigned long tmp;

	/* write SDRAM bank 0 register */
	mtdcr (memcfga, mem_mb0cf);
	mtdcr (memcfgd, 0x00062001);

/* Set the SDRAM Timing reg, SDTR1 and the refresh timer reg, RTR.	*/
/* To set the appropriate timings, we need to know the SDRAM speed.	*/
/* We can use the PLB speed since the SDRAM speed is the same as	*/
/* the PLB speed. The PLB speed is the FBK divider times the		*/
/* 405GP reference clock, which on the L1 is 25Mhz.			*/
/* Thus, if FBK div is 2, SDRAM is 50Mhz; if FBK div is 3, SDRAM is	*/
/* 150Mhz; if FBK is 3, SDRAM is 150Mhz.				*/

	/* divisor = ((mfdcr(strap)>> 28) & 0x3); */

/* write SDRAM timing for 100Mhz. */
	mtdcr (memcfga, mem_sdtr1);
	mtdcr (memcfgd, 0x0086400D);

/* write SDRAM refresh interval register */
	mtdcr (memcfga, mem_rtr);
	mtdcr (memcfgd, 0x05F00000);
	udelay (200);

/* sdram controller.*/
	mtdcr (memcfga, mem_mcopt1);
	mtdcr (memcfgd, 0x90800000);
	udelay (200);

/* initially, disable ECC on all banks */
	udelay (200);
	mtdcr (memcfga, mem_ecccf);
	tmp = mfdcr (memcfgd);
	tmp &= 0xff0fffff;
	mtdcr (memcfga, mem_ecccf);
	mtdcr (memcfgd, tmp);

	return;
}

extern int memory_post_test (int flags);

int testdram (void)
{
 unsigned long tmp;
	uint *pstart = (uint *) 0x00000000;
	uint *pend = (uint *) L1_MEMSIZE;
	uint *p;

	if (getenv_r("booted",NULL,0) <= 0)
	{
		printf ("testdram..");
	/*AA*/
		for (p = pstart; p < pend; p++)
			*p = 0xaaaaaaaa;
		for (p = pstart; p < pend; p++) {
			if (*p != 0xaaaaaaaa) {
				printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
						(uint) p, *p, 0xaaaaaaaa);
				return 1;
			}
		}
	/*55*/
		for (p = pstart; p < pend; p++)
			*p = 0x55555555;
		for (p = pstart; p < pend; p++) {
			if (*p != 0x55555555) {
				printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
						(uint) p, *p, 0x55555555);
				return 1;
			}
		}
	/*addr*/
		for (p = pstart; p < pend; p++)
			*p = (unsigned)p;
		for (p = pstart; p < pend; p++) {
			if (*p != (unsigned)p) {
				printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
						(uint) p, *p, (uint)p);
				return 1;
			}
		}
		printf ("Success. ");
	}
	printf ("Enable ECC..");

	mtdcr (memcfga, mem_mcopt1);
	tmp = (mfdcr (memcfgd) & ~0xFFE00000) | 0x90800000;
	mtdcr (memcfga, mem_mcopt1);
	mtdcr (memcfgd, tmp);
	udelay (600);
	for (p = (unsigned long) 0; ((unsigned long) p < L1_MEMSIZE); *p++ = 0L)
		;
	udelay (400);
	mtdcr (memcfga, mem_ecccf);
	tmp = mfdcr (memcfgd);
	tmp |= 0x00800000;
	mtdcr (memcfgd, tmp);
	udelay (400);
	printf ("enabled.\n");
	return (0);
}

/* ------------------------------------------------------------------------- */
static u8 *dhcp_env_update (u8 thing, u8 * pop)
{
	u8 i, oplen;

	oplen = *(pop + 1);

	if ((Things[thing].dhcpvalue = malloc (oplen)) == NULL) {
		printf ("Whoops! failed to malloc space for DHCP thing %s\n",
				Things[thing].envname);
		return NULL;
	}
	for (i = 0; (i < oplen); i++)
		if ((*(Things[thing].dhcpvalue + i) = *(pop + 2 + i)) == ' ')
			break;
	*(Things[thing].dhcpvalue + i) = '\0';

/* set env. */
	if (Things[thing].envname)
	{
		setenv (Things[thing].envname, Things[thing].dhcpvalue);
	}
	return ((u8 *)(Things[thing].dhcpvalue));
}

/* ------------------------------------------------------------------------- */
u8 *dhcp_vendorex_prep (u8 * e)
{
	u8 thing;

/* ask for the things I want. */
	*e++ = 55;					/* Parameter Request List */
	*e++ = N_THINGS;
	for (thing = 0; thing < N_THINGS; thing++)
		*e++ = Things[thing].dhcp_option;
	*e++ = 255;

	return e;
}

/* ------------------------------------------------------------------------- */
/* .. return NULL means it wasnt mine, non-null means I got it..*/
u8 *dhcp_vendorex_proc (u8 * pop)
{
	u8 oplen, *sub_op, sub_oplen, *retval;
	u8 thing = 0;

	retval = NULL;
	oplen = *(pop + 1);
/* if pop is vender spec indicator, there are sub-options. */
	if (*pop == DHCP_VENDOR_SPECX) {
		for (sub_op = pop + 2;
		     oplen && (sub_oplen = *(sub_op + 1));
		     oplen -= sub_oplen, sub_op += (sub_oplen + 2)) {
			for (thing = 0; thing < N_THINGS; thing++) {
			    if (*sub_op == Things[thing].dhcp_vendor_option) {
					if (!(retval = dhcp_env_update (thing, sub_op))) {
						return NULL;
					}
			    }
			}
		}
	} else {
		for (thing = 0; thing < N_THINGS; thing++) {
			if (*pop == Things[thing].dhcp_option)
				if (!(retval = dhcp_env_update (thing, pop)))
					return NULL;
		}
	}
	return (pop);
}