xref: /rk3399_rockchip-uboot/arch/powerpc/cpu/mpc85xx/cpu.c (revision fbb9ecf7493fbd6b8c8af7d52e90c915459f7040)
1 /*
2  * Copyright 2004,2007-2011 Freescale Semiconductor, Inc.
3  * (C) Copyright 2002, 2003 Motorola Inc.
4  * Xianghua Xiao (X.Xiao@motorola.com)
5  *
6  * (C) Copyright 2000
7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8  *
9  * See file CREDITS for list of people who contributed to this
10  * project.
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License as
14  * published by the Free Software Foundation; either version 2 of
15  * the License, or (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25  * MA 02111-1307 USA
26  */
27 
28 #include <config.h>
29 #include <common.h>
30 #include <watchdog.h>
31 #include <command.h>
32 #include <fsl_esdhc.h>
33 #include <asm/cache.h>
34 #include <asm/io.h>
35 #include <asm/mmu.h>
36 #include <asm/fsl_ifc.h>
37 #include <asm/fsl_law.h>
38 #include <asm/fsl_lbc.h>
39 #include <post.h>
40 #include <asm/processor.h>
41 #include <asm/fsl_ddr_sdram.h>
42 
43 DECLARE_GLOBAL_DATA_PTR;
44 
45 int checkcpu (void)
46 {
47 	sys_info_t sysinfo;
48 	uint pvr, svr;
49 	uint ver;
50 	uint major, minor;
51 	struct cpu_type *cpu;
52 	char buf1[32], buf2[32];
53 #if defined(CONFIG_DDR_CLK_FREQ) || defined(CONFIG_FSL_CORENET)
54 	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
55 #endif /* CONFIG_FSL_CORENET */
56 #ifdef CONFIG_DDR_CLK_FREQ
57 	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
58 		>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
59 #else
60 #ifdef CONFIG_FSL_CORENET
61 	u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
62 		>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
63 #else
64 	u32 ddr_ratio = 0;
65 #endif /* CONFIG_FSL_CORENET */
66 #endif /* CONFIG_DDR_CLK_FREQ */
67 	unsigned int i, core, nr_cores = cpu_numcores();
68 	u32 mask = cpu_mask();
69 
70 	svr = get_svr();
71 	major = SVR_MAJ(svr);
72 #ifdef CONFIG_MPC8536
73 	major &= 0x7; /* the msb of this nibble is a mfg code */
74 #endif
75 	minor = SVR_MIN(svr);
76 
77 	if (cpu_numcores() > 1) {
78 #ifndef CONFIG_MP
79 		puts("Unicore software on multiprocessor system!!\n"
80 		     "To enable mutlticore build define CONFIG_MP\n");
81 #endif
82 		volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC8xxx_PIC_ADDR);
83 		printf("CPU%d:  ", pic->whoami);
84 	} else {
85 		puts("CPU:   ");
86 	}
87 
88 	cpu = gd->cpu;
89 
90 	puts(cpu->name);
91 	if (IS_E_PROCESSOR(svr))
92 		puts("E");
93 
94 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
95 
96 	pvr = get_pvr();
97 	ver = PVR_VER(pvr);
98 	major = PVR_MAJ(pvr);
99 	minor = PVR_MIN(pvr);
100 
101 	printf("Core:  ");
102 	switch(ver) {
103 	case PVR_VER_E500_V1:
104 	case PVR_VER_E500_V2:
105 		puts("E500");
106 		break;
107 	case PVR_VER_E500MC:
108 		puts("E500MC");
109 		break;
110 	case PVR_VER_E5500:
111 		puts("E5500");
112 		break;
113 	default:
114 		puts("Unknown");
115 		break;
116 	}
117 
118 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
119 
120 	get_sys_info(&sysinfo);
121 
122 	puts("Clock Configuration:");
123 	for_each_cpu(i, core, nr_cores, mask) {
124 		if (!(i & 3))
125 			printf ("\n       ");
126 		printf("CPU%d:%-4s MHz, ", core,
127 			strmhz(buf1, sysinfo.freqProcessor[core]));
128 	}
129 	printf("\n       CCB:%-4s MHz,\n", strmhz(buf1, sysinfo.freqSystemBus));
130 
131 #ifdef CONFIG_FSL_CORENET
132 	if (ddr_sync == 1) {
133 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
134 			"(Synchronous), ",
135 			strmhz(buf1, sysinfo.freqDDRBus/2),
136 			strmhz(buf2, sysinfo.freqDDRBus));
137 	} else {
138 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
139 			"(Asynchronous), ",
140 			strmhz(buf1, sysinfo.freqDDRBus/2),
141 			strmhz(buf2, sysinfo.freqDDRBus));
142 	}
143 #else
144 	switch (ddr_ratio) {
145 	case 0x0:
146 		printf("       DDR:%-4s MHz (%s MT/s data rate), ",
147 			strmhz(buf1, sysinfo.freqDDRBus/2),
148 			strmhz(buf2, sysinfo.freqDDRBus));
149 		break;
150 	case 0x7:
151 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
152 			"(Synchronous), ",
153 			strmhz(buf1, sysinfo.freqDDRBus/2),
154 			strmhz(buf2, sysinfo.freqDDRBus));
155 		break;
156 	default:
157 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
158 			"(Asynchronous), ",
159 			strmhz(buf1, sysinfo.freqDDRBus/2),
160 			strmhz(buf2, sysinfo.freqDDRBus));
161 		break;
162 	}
163 #endif
164 
165 #if defined(CONFIG_FSL_LBC)
166 	if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
167 		printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
168 	} else {
169 		printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
170 		       sysinfo.freqLocalBus);
171 	}
172 #endif
173 
174 #ifdef CONFIG_CPM2
175 	printf("CPM:   %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
176 #endif
177 
178 #ifdef CONFIG_QE
179 	printf("       QE:%-4s MHz\n", strmhz(buf1, sysinfo.freqQE));
180 #endif
181 
182 #ifdef CONFIG_SYS_DPAA_FMAN
183 	for (i = 0; i < CONFIG_SYS_NUM_FMAN; i++) {
184 		printf("       FMAN%d: %s MHz\n", i + 1,
185 			strmhz(buf1, sysinfo.freqFMan[i]));
186 	}
187 #endif
188 
189 #ifdef CONFIG_SYS_DPAA_PME
190 	printf("       PME:   %s MHz\n", strmhz(buf1, sysinfo.freqPME));
191 #endif
192 
193 	puts("L1:    D-cache 32 kB enabled\n       I-cache 32 kB enabled\n");
194 
195 	return 0;
196 }
197 
198 
199 /* ------------------------------------------------------------------------- */
200 
201 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
202 {
203 /* Everything after the first generation of PQ3 parts has RSTCR */
204 #if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
205     defined(CONFIG_MPC8555) || defined(CONFIG_MPC8560)
206 	unsigned long val, msr;
207 
208 	/*
209 	 * Initiate hard reset in debug control register DBCR0
210 	 * Make sure MSR[DE] = 1.  This only resets the core.
211 	 */
212 	msr = mfmsr ();
213 	msr |= MSR_DE;
214 	mtmsr (msr);
215 
216 	val = mfspr(DBCR0);
217 	val |= 0x70000000;
218 	mtspr(DBCR0,val);
219 #else
220 	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
221 	out_be32(&gur->rstcr, 0x2);	/* HRESET_REQ */
222 	udelay(100);
223 #endif
224 
225 	return 1;
226 }
227 
228 
229 /*
230  * Get timebase clock frequency
231  */
232 #ifndef CONFIG_SYS_FSL_TBCLK_DIV
233 #define CONFIG_SYS_FSL_TBCLK_DIV 8
234 #endif
235 unsigned long get_tbclk (void)
236 {
237 	unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;
238 
239 	return (gd->bus_clk + (tbclk_div >> 1)) / tbclk_div;
240 }
241 
242 
243 #if defined(CONFIG_WATCHDOG)
244 void
245 watchdog_reset(void)
246 {
247 	int re_enable = disable_interrupts();
248 	reset_85xx_watchdog();
249 	if (re_enable) enable_interrupts();
250 }
251 
252 void
253 reset_85xx_watchdog(void)
254 {
255 	/*
256 	 * Clear TSR(WIS) bit by writing 1
257 	 */
258 	unsigned long val;
259 	val = mfspr(SPRN_TSR);
260 	val |= TSR_WIS;
261 	mtspr(SPRN_TSR, val);
262 }
263 #endif	/* CONFIG_WATCHDOG */
264 
265 /*
266  * Initializes on-chip MMC controllers.
267  * to override, implement board_mmc_init()
268  */
269 int cpu_mmc_init(bd_t *bis)
270 {
271 #ifdef CONFIG_FSL_ESDHC
272 	return fsl_esdhc_mmc_init(bis);
273 #else
274 	return 0;
275 #endif
276 }
277 
278 /*
279  * Print out the state of various machine registers.
280  * Currently prints out LAWs, BR0/OR0 for LBC, CSPR/CSOR/Timing
281  * parameters for IFC and TLBs
282  */
283 void mpc85xx_reginfo(void)
284 {
285 	print_tlbcam();
286 	print_laws();
287 #if defined(CONFIG_FSL_LBC)
288 	print_lbc_regs();
289 #endif
290 #ifdef CONFIG_FSL_IFC
291 	print_ifc_regs();
292 #endif
293 
294 }
295 
296 /* Common ddr init for non-corenet fsl 85xx platforms */
297 #ifndef CONFIG_FSL_CORENET
298 #if defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SYS_INIT_L2_ADDR)
299 phys_size_t initdram(int board_type)
300 {
301 #if defined(CONFIG_SPD_EEPROM) || defined(CONFIG_DDR_SPD)
302 	return fsl_ddr_sdram_size();
303 #else
304 	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
305 #endif
306 }
307 #else /* CONFIG_SYS_RAMBOOT */
308 phys_size_t initdram(int board_type)
309 {
310 	phys_size_t dram_size = 0;
311 
312 #if defined(CONFIG_SYS_FSL_ERRATUM_DDR_MSYNC_IN)
313 	{
314 		ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
315 		unsigned int x = 10;
316 		unsigned int i;
317 
318 		/*
319 		 * Work around to stabilize DDR DLL
320 		 */
321 		out_be32(&gur->ddrdllcr, 0x81000000);
322 		asm("sync;isync;msync");
323 		udelay(200);
324 		while (in_be32(&gur->ddrdllcr) != 0x81000100) {
325 			setbits_be32(&gur->devdisr, 0x00010000);
326 			for (i = 0; i < x; i++)
327 				;
328 			clrbits_be32(&gur->devdisr, 0x00010000);
329 			x++;
330 		}
331 	}
332 #endif
333 
334 #if	defined(CONFIG_SPD_EEPROM)	|| \
335 	defined(CONFIG_DDR_SPD)		|| \
336 	defined(CONFIG_SYS_DDR_RAW_TIMING)
337 	dram_size = fsl_ddr_sdram();
338 #else
339 	dram_size = fixed_sdram();
340 #endif
341 	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
342 	dram_size *= 0x100000;
343 
344 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
345 	/*
346 	 * Initialize and enable DDR ECC.
347 	 */
348 	ddr_enable_ecc(dram_size);
349 #endif
350 
351 #if defined(CONFIG_FSL_LBC)
352 	/* Some boards also have sdram on the lbc */
353 	lbc_sdram_init();
354 #endif
355 
356 	debug("DDR: ");
357 	return dram_size;
358 }
359 #endif /* CONFIG_SYS_RAMBOOT */
360 #endif
361 
362 #if CONFIG_POST & CONFIG_SYS_POST_MEMORY
363 
364 /* Board-specific functions defined in each board's ddr.c */
365 void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
366 	unsigned int ctrl_num);
367 void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
368 		       phys_addr_t *rpn);
369 unsigned int
370 	setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);
371 
372 void clear_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);
373 
374 static void dump_spd_ddr_reg(void)
375 {
376 	int i, j, k, m;
377 	u8 *p_8;
378 	u32 *p_32;
379 	ccsr_ddr_t *ddr[CONFIG_NUM_DDR_CONTROLLERS];
380 	generic_spd_eeprom_t
381 		spd[CONFIG_NUM_DDR_CONTROLLERS][CONFIG_DIMM_SLOTS_PER_CTLR];
382 
383 	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
384 		fsl_ddr_get_spd(spd[i], i);
385 
386 	puts("SPD data of all dimms (zero vaule is omitted)...\n");
387 	puts("Byte (hex)  ");
388 	k = 1;
389 	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
390 		for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++)
391 			printf("Dimm%d ", k++);
392 	}
393 	puts("\n");
394 	for (k = 0; k < sizeof(generic_spd_eeprom_t); k++) {
395 		m = 0;
396 		printf("%3d (0x%02x)  ", k, k);
397 		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
398 			for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
399 				p_8 = (u8 *) &spd[i][j];
400 				if (p_8[k]) {
401 					printf("0x%02x  ", p_8[k]);
402 					m++;
403 				} else
404 					puts("      ");
405 			}
406 		}
407 		if (m)
408 			puts("\n");
409 		else
410 			puts("\r");
411 	}
412 
413 	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
414 		switch (i) {
415 		case 0:
416 			ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
417 			break;
418 #ifdef CONFIG_SYS_MPC85xx_DDR2_ADDR
419 		case 1:
420 			ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR2_ADDR;
421 			break;
422 #endif
423 		default:
424 			printf("%s unexpected controller number = %u\n",
425 				__func__, i);
426 			return;
427 		}
428 	}
429 	printf("DDR registers dump for all controllers "
430 		"(zero vaule is omitted)...\n");
431 	puts("Offset (hex)   ");
432 	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
433 		printf("     Base + 0x%04x", (u32)ddr[i] & 0xFFFF);
434 	puts("\n");
435 	for (k = 0; k < sizeof(ccsr_ddr_t)/4; k++) {
436 		m = 0;
437 		printf("%6d (0x%04x)", k * 4, k * 4);
438 		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
439 			p_32 = (u32 *) ddr[i];
440 			if (p_32[k]) {
441 				printf("        0x%08x", p_32[k]);
442 				m++;
443 			} else
444 				puts("                  ");
445 		}
446 		if (m)
447 			puts("\n");
448 		else
449 			puts("\r");
450 	}
451 	puts("\n");
452 }
453 
454 /* invalid the TLBs for DDR and setup new ones to cover p_addr */
455 static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
456 {
457 	u32 vstart = CONFIG_SYS_DDR_SDRAM_BASE;
458 	unsigned long epn;
459 	u32 tsize, valid, ptr;
460 	int ddr_esel;
461 
462 	clear_ddr_tlbs_phys(p_addr, size>>20);
463 
464 	/* Setup new tlb to cover the physical address */
465 	setup_ddr_tlbs_phys(p_addr, size>>20);
466 
467 	ptr = vstart;
468 	ddr_esel = find_tlb_idx((void *)ptr, 1);
469 	if (ddr_esel != -1) {
470 		read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
471 	} else {
472 		printf("TLB error in function %s\n", __func__);
473 		return -1;
474 	}
475 
476 	return 0;
477 }
478 
479 /*
480  * slide the testing window up to test another area
481  * for 32_bit system, the maximum testable memory is limited to
482  * CONFIG_MAX_MEM_MAPPED
483  */
484 int arch_memory_test_advance(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
485 {
486 	phys_addr_t test_cap, p_addr;
487 	phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);
488 
489 #if !defined(CONFIG_PHYS_64BIT) || \
490     !defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
491 	(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
492 		test_cap = p_size;
493 #else
494 		test_cap = gd->ram_size;
495 #endif
496 	p_addr = (*vstart) + (*size) + (*phys_offset);
497 	if (p_addr < test_cap - 1) {
498 		p_size = min(test_cap - p_addr, CONFIG_MAX_MEM_MAPPED);
499 		if (reset_tlb(p_addr, p_size, phys_offset) == -1)
500 			return -1;
501 		*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
502 		*size = (u32) p_size;
503 		printf("Testing 0x%08llx - 0x%08llx\n",
504 			(u64)(*vstart) + (*phys_offset),
505 			(u64)(*vstart) + (*phys_offset) + (*size) - 1);
506 	} else
507 		return 1;
508 
509 	return 0;
510 }
511 
512 /* initialization for testing area */
513 int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
514 {
515 	phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);
516 
517 	*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
518 	*size = (u32) p_size;	/* CONFIG_MAX_MEM_MAPPED < 4G */
519 	*phys_offset = 0;
520 
521 #if !defined(CONFIG_PHYS_64BIT) || \
522     !defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
523 	(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
524 		if (gd->ram_size > CONFIG_MAX_MEM_MAPPED) {
525 			puts("Cannot test more than ");
526 			print_size(CONFIG_MAX_MEM_MAPPED,
527 				" without proper 36BIT support.\n");
528 		}
529 #endif
530 	printf("Testing 0x%08llx - 0x%08llx\n",
531 		(u64)(*vstart) + (*phys_offset),
532 		(u64)(*vstart) + (*phys_offset) + (*size) - 1);
533 
534 	return 0;
535 }
536 
537 /* invalid TLBs for DDR and remap as normal after testing */
538 int arch_memory_test_cleanup(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
539 {
540 	unsigned long epn;
541 	u32 tsize, valid, ptr;
542 	phys_addr_t rpn = 0;
543 	int ddr_esel;
544 
545 	/* disable the TLBs for this testing */
546 	ptr = *vstart;
547 
548 	while (ptr < (*vstart) + (*size)) {
549 		ddr_esel = find_tlb_idx((void *)ptr, 1);
550 		if (ddr_esel != -1) {
551 			read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, &rpn);
552 			disable_tlb(ddr_esel);
553 		}
554 		ptr += TSIZE_TO_BYTES(tsize);
555 	}
556 
557 	puts("Remap DDR ");
558 	setup_ddr_tlbs(gd->ram_size>>20);
559 	puts("\n");
560 
561 	return 0;
562 }
563 
564 void arch_memory_failure_handle(void)
565 {
566 	dump_spd_ddr_reg();
567 }
568 #endif
569