summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc85xx/cpu.c
blob: 0cc6e0323f2e8331a4ff9ef5daa7b5023ad907f3 (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
/*
 * Copyright 2004,2007-2009 Freescale Semiconductor, Inc.
 * (C) Copyright 2002, 2003 Motorola Inc.
 * Xianghua Xiao (X.Xiao@motorola.com)
 *
 * (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 <config.h>
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <fsl_esdhc.h>
#include <asm/cache.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

int checkcpu (void)
{
	sys_info_t sysinfo;
	uint pvr, svr;
	uint fam;
	uint ver;
	uint major, minor;
	struct cpu_type *cpu;
	char buf1[32], buf2[32];
#ifdef CONFIG_DDR_CLK_FREQ
	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#ifdef CONFIG_FSL_CORENET
	u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
		>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
#else
	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
		>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
#endif
#else
#ifdef CONFIG_FSL_CORENET
	u32 ddr_sync = 0;
#else
	u32 ddr_ratio = 0;
#endif
#endif /* CONFIG_DDR_CLK_FREQ */
	int i;

	svr = get_svr();
	major = SVR_MAJ(svr);
#ifdef CONFIG_MPC8536
	major &= 0x7; /* the msb of this nibble is a mfg code */
#endif
	minor = SVR_MIN(svr);

	if (cpu_numcores() > 1) {
#ifndef CONFIG_MP
		puts("Unicore software on multiprocessor system!!\n"
		     "To enable mutlticore build define CONFIG_MP\n");
#endif
		volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
		printf("CPU%d:  ", pic->whoami);
	} else {
		puts("CPU:   ");
	}

	cpu = gd->cpu;

	puts(cpu->name);
	if (IS_E_PROCESSOR(svr))
		puts("E");

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

	pvr = get_pvr();
	fam = PVR_FAM(pvr);
	ver = PVR_VER(pvr);
	major = PVR_MAJ(pvr);
	minor = PVR_MIN(pvr);

	printf("Core:  ");
	switch (fam) {
	case PVR_FAM(PVR_85xx):
	    puts("E500");
	    break;
	default:
	    puts("Unknown");
	    break;
	}

	if (PVR_MEM(pvr) == 0x03)
		puts("MC");

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

	get_sys_info(&sysinfo);

	puts("Clock Configuration:");
	for (i = 0; i < cpu_numcores(); i++) {
		if (!(i & 3))
			printf ("\n       ");
		printf("CPU%d:%-4s MHz, ",
				i,strmhz(buf1, sysinfo.freqProcessor[i]));
	}
	printf("\n       CCB:%-4s MHz,\n", strmhz(buf1, sysinfo.freqSystemBus));

#ifdef CONFIG_FSL_CORENET
	if (ddr_sync == 1) {
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Synchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
	} else {
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Asynchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
	}
#else
	switch (ddr_ratio) {
	case 0x0:
		printf("       DDR:%-4s MHz (%s MT/s data rate), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	case 0x7:
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Synchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	default:
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Asynchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	}
#endif

	if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
		printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
	} else {
		printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
		       sysinfo.freqLocalBus);
	}

#ifdef CONFIG_CPM2
	printf("CPM:   %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
#endif

#ifdef CONFIG_QE
	printf("       QE:%-4s MHz\n", strmhz(buf1, sysinfo.freqQE));
#endif

#ifdef CONFIG_SYS_DPAA_FMAN
	for (i = 0; i < CONFIG_SYS_NUM_FMAN; i++) {
		printf("       FMAN%d: %s MHz\n", i,
			strmhz(buf1, sysinfo.freqFMan[i]));
	}
#endif

#ifdef CONFIG_SYS_DPAA_PME
	printf("       PME:   %s MHz\n", strmhz(buf1, sysinfo.freqPME));
#endif

	puts("L1:    D-cache 32 kB enabled\n       I-cache 32 kB enabled\n");

	return 0;
}


/* ------------------------------------------------------------------------- */

int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
/* Everything after the first generation of PQ3 parts has RSTCR */
#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
    defined(CONFIG_MPC8555) || defined(CONFIG_MPC8560)
	unsigned long val, msr;

	/*
	 * Initiate hard reset in debug control register DBCR0
	 * Make sure MSR[DE] = 1.  This only resets the core.
	 */
	msr = mfmsr ();
	msr |= MSR_DE;
	mtmsr (msr);

	val = mfspr(DBCR0);
	val |= 0x70000000;
	mtspr(DBCR0,val);
#else
	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	out_be32(&gur->rstcr, 0x2);	/* HRESET_REQ */
	udelay(100);
#endif

	return 1;
}


/*
 * Get timebase clock frequency
 */
unsigned long get_tbclk (void)
{
#ifdef CONFIG_FSL_CORENET
	return (gd->bus_clk + 8) / 16;
#else
	return (gd->bus_clk + 4UL)/8UL;
#endif
}


#if defined(CONFIG_WATCHDOG)
void
watchdog_reset(void)
{
	int re_enable = disable_interrupts();
	reset_85xx_watchdog();
	if (re_enable) enable_interrupts();
}

void
reset_85xx_watchdog(void)
{
	/*
	 * Clear TSR(WIS) bit by writing 1
	 */
	unsigned long val;
	val = mfspr(SPRN_TSR);
	val |= TSR_WIS;
	mtspr(SPRN_TSR, val);
}
#endif	/* CONFIG_WATCHDOG */

/*
 * Configures a UPM. The function requires the respective MxMR to be set
 * before calling this function. "size" is the number or entries, not a sizeof.
 */
void upmconfig (uint upm, uint * table, uint size)
{
	int i, mdr, mad, old_mad = 0;
	volatile u32 *mxmr;
	volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
	volatile u32 *brp,*orp;
	volatile u8* dummy = NULL;
	int upmmask;

	switch (upm) {
	case UPMA:
		mxmr = &lbc->mamr;
		upmmask = BR_MS_UPMA;
		break;
	case UPMB:
		mxmr = &lbc->mbmr;
		upmmask = BR_MS_UPMB;
		break;
	case UPMC:
		mxmr = &lbc->mcmr;
		upmmask = BR_MS_UPMC;
		break;
	default:
		printf("%s: Bad UPM index %d to configure\n", __FUNCTION__, upm);
		hang();
	}

	/* Find the address for the dummy write transaction */
	for (brp = &lbc->br0, orp = &lbc->or0, i = 0; i < 8;
		 i++, brp += 2, orp += 2) {

		/* Look for a valid BR with selected UPM */
		if ((in_be32(brp) & (BR_V | BR_MSEL)) == (BR_V | upmmask)) {
			dummy = (volatile u8*)(in_be32(brp) & BR_BA);
			break;
		}
	}

	if (i == 8) {
		printf("Error: %s() could not find matching BR\n", __FUNCTION__);
		hang();
	}

	for (i = 0; i < size; i++) {
		/* 1 */
		out_be32(mxmr,  (in_be32(mxmr) & 0x4fffffc0) | MxMR_OP_WARR | i);
		/* 2 */
		out_be32(&lbc->mdr, table[i]);
		/* 3 */
		mdr = in_be32(&lbc->mdr);
		/* 4 */
		*(volatile u8 *)dummy = 0;
		/* 5 */
		do {
			mad = in_be32(mxmr) & MxMR_MAD_MSK;
		} while (mad <= old_mad && !(!mad && i == (size-1)));
		old_mad = mad;
	}
	out_be32(mxmr, (in_be32(mxmr) & 0x4fffffc0) | MxMR_OP_NORM);
}

/*
 * Initializes on-chip MMC controllers.
 * to override, implement board_mmc_init()
 */
int cpu_mmc_init(bd_t *bis)
{
#ifdef CONFIG_FSL_ESDHC
	return fsl_esdhc_mmc_init(bis);
#else
	return 0;
#endif
}