xref: /openbmc/u-boot/drivers/qe/qe.c (revision 87a62bce)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
4  *
5  * Dave Liu <daveliu@freescale.com>
6  * based on source code of Shlomi Gridish
7  */
8 
9 #include <common.h>
10 #include <malloc.h>
11 #include <command.h>
12 #include <linux/errno.h>
13 #include <asm/io.h>
14 #include <linux/immap_qe.h>
15 #include <fsl_qe.h>
16 #ifdef CONFIG_ARCH_LS1021A
17 #include <asm/arch/immap_ls102xa.h>
18 #endif
19 
20 #ifdef CONFIG_SYS_QE_FMAN_FW_IN_MMC
21 #include <mmc.h>
22 #endif
23 
24 #define MPC85xx_DEVDISR_QE_DISABLE	0x1
25 
26 qe_map_t		*qe_immr = NULL;
27 #ifdef CONFIG_QE
28 static qe_snum_t	snums[QE_NUM_OF_SNUM];
29 #endif
30 
31 DECLARE_GLOBAL_DATA_PTR;
32 
33 void qe_issue_cmd(uint cmd, uint sbc, u8 mcn, u32 cmd_data)
34 {
35 	u32 cecr;
36 
37 	if (cmd == QE_RESET) {
38 		out_be32(&qe_immr->cp.cecr,(u32) (cmd | QE_CR_FLG));
39 	} else {
40 		out_be32(&qe_immr->cp.cecdr, cmd_data);
41 		out_be32(&qe_immr->cp.cecr, (sbc | QE_CR_FLG |
42 			 ((u32) mcn<<QE_CR_PROTOCOL_SHIFT) | cmd));
43 	}
44 	/* Wait for the QE_CR_FLG to clear */
45 	do {
46 		cecr = in_be32(&qe_immr->cp.cecr);
47 	} while (cecr & QE_CR_FLG);
48 
49 	return;
50 }
51 
52 #ifdef CONFIG_QE
53 uint qe_muram_alloc(uint size, uint align)
54 {
55 	uint	retloc;
56 	uint	align_mask, off;
57 	uint	savebase;
58 
59 	align_mask = align - 1;
60 	savebase = gd->arch.mp_alloc_base;
61 
62 	off = gd->arch.mp_alloc_base & align_mask;
63 	if (off != 0)
64 		gd->arch.mp_alloc_base += (align - off);
65 
66 	if ((off = size & align_mask) != 0)
67 		size += (align - off);
68 
69 	if ((gd->arch.mp_alloc_base + size) >= gd->arch.mp_alloc_top) {
70 		gd->arch.mp_alloc_base = savebase;
71 		printf("%s: ran out of ram.\n",  __FUNCTION__);
72 	}
73 
74 	retloc = gd->arch.mp_alloc_base;
75 	gd->arch.mp_alloc_base += size;
76 
77 	memset((void *)&qe_immr->muram[retloc], 0, size);
78 
79 	__asm__ __volatile__("sync");
80 
81 	return retloc;
82 }
83 #endif
84 
85 void *qe_muram_addr(uint offset)
86 {
87 	return (void *)&qe_immr->muram[offset];
88 }
89 
90 #ifdef CONFIG_QE
91 static void qe_sdma_init(void)
92 {
93 	volatile sdma_t	*p;
94 	uint		sdma_buffer_base;
95 
96 	p = (volatile sdma_t *)&qe_immr->sdma;
97 
98 	/* All of DMA transaction in bus 1 */
99 	out_be32(&p->sdaqr, 0);
100 	out_be32(&p->sdaqmr, 0);
101 
102 	/* Allocate 2KB temporary buffer for sdma */
103 	sdma_buffer_base = qe_muram_alloc(2048, 4096);
104 	out_be32(&p->sdwbcr, sdma_buffer_base & QE_SDEBCR_BA_MASK);
105 
106 	/* Clear sdma status */
107 	out_be32(&p->sdsr, 0x03000000);
108 
109 	/* Enable global mode on bus 1, and 2KB buffer size */
110 	out_be32(&p->sdmr, QE_SDMR_GLB_1_MSK | (0x3 << QE_SDMR_CEN_SHIFT));
111 }
112 
113 /* This table is a list of the serial numbers of the Threads, taken from the
114  * "SNUM Table" chart in the QE Reference Manual. The order is not important,
115  * we just need to know what the SNUMs are for the threads.
116  */
117 static u8 thread_snum[] = {
118 /* Evthreads 16-29 are not supported in MPC8309 */
119 #if !defined(CONFIG_MPC8309)
120 	0x04, 0x05, 0x0c, 0x0d,
121 	0x14, 0x15, 0x1c, 0x1d,
122 	0x24, 0x25, 0x2c, 0x2d,
123 	0x34, 0x35,
124 #endif
125 	0x88, 0x89, 0x98, 0x99,
126 	0xa8, 0xa9, 0xb8, 0xb9,
127 	0xc8, 0xc9, 0xd8, 0xd9,
128 	0xe8, 0xe9, 0x08, 0x09,
129 	0x18, 0x19, 0x28, 0x29,
130 	0x38, 0x39, 0x48, 0x49,
131 	0x58, 0x59, 0x68, 0x69,
132 	0x78, 0x79, 0x80, 0x81
133 };
134 
135 static void qe_snums_init(void)
136 {
137 	int	i;
138 
139 	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
140 		snums[i].state = QE_SNUM_STATE_FREE;
141 		snums[i].num   = thread_snum[i];
142 	}
143 }
144 
145 int qe_get_snum(void)
146 {
147 	int	snum = -EBUSY;
148 	int	i;
149 
150 	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
151 		if (snums[i].state == QE_SNUM_STATE_FREE) {
152 			snums[i].state = QE_SNUM_STATE_USED;
153 			snum = snums[i].num;
154 			break;
155 		}
156 	}
157 
158 	return snum;
159 }
160 
161 void qe_put_snum(u8 snum)
162 {
163 	int	i;
164 
165 	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
166 		if (snums[i].num == snum) {
167 			snums[i].state = QE_SNUM_STATE_FREE;
168 			break;
169 		}
170 	}
171 }
172 
173 void qe_init(uint qe_base)
174 {
175 	/* Init the QE IMMR base */
176 	qe_immr = (qe_map_t *)qe_base;
177 
178 #ifdef CONFIG_SYS_QE_FMAN_FW_IN_NOR
179 	/*
180 	 * Upload microcode to IRAM for those SOCs which do not have ROM in QE.
181 	 */
182 	qe_upload_firmware((const void *)CONFIG_SYS_QE_FW_ADDR);
183 
184 	/* enable the microcode in IRAM */
185 	out_be32(&qe_immr->iram.iready,QE_IRAM_READY);
186 #endif
187 
188 	gd->arch.mp_alloc_base = QE_DATAONLY_BASE;
189 	gd->arch.mp_alloc_top = gd->arch.mp_alloc_base + QE_DATAONLY_SIZE;
190 
191 	qe_sdma_init();
192 	qe_snums_init();
193 }
194 #endif
195 
196 #ifdef CONFIG_U_QE
197 void u_qe_init(void)
198 {
199 	qe_immr = (qe_map_t *)(CONFIG_SYS_IMMR + QE_IMMR_OFFSET);
200 
201 	void *addr = (void *)CONFIG_SYS_QE_FW_ADDR;
202 #ifdef CONFIG_SYS_QE_FMAN_FW_IN_MMC
203 	int dev = CONFIG_SYS_MMC_ENV_DEV;
204 	u32 cnt = CONFIG_SYS_QE_FMAN_FW_LENGTH / 512;
205 	u32 blk = CONFIG_SYS_QE_FW_ADDR / 512;
206 
207 	if (mmc_initialize(gd->bd)) {
208 		printf("%s: mmc_initialize() failed\n", __func__);
209 		return;
210 	}
211 	addr = malloc(CONFIG_SYS_QE_FMAN_FW_LENGTH);
212 	struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
213 
214 	if (!mmc) {
215 		free(addr);
216 		printf("\nMMC cannot find device for ucode\n");
217 	} else {
218 		printf("\nMMC read: dev # %u, block # %u, count %u ...\n",
219 		       dev, blk, cnt);
220 		mmc_init(mmc);
221 		(void)mmc->block_dev.block_read(&mmc->block_dev, blk, cnt,
222 						addr);
223 	}
224 #endif
225 	if (!u_qe_upload_firmware(addr))
226 		out_be32(&qe_immr->iram.iready, QE_IRAM_READY);
227 #ifdef CONFIG_SYS_QE_FMAN_FW_IN_MMC
228 	free(addr);
229 #endif
230 }
231 #endif
232 
233 #ifdef CONFIG_U_QE
234 void u_qe_resume(void)
235 {
236 	qe_map_t *qe_immrr;
237 
238 	qe_immrr = (qe_map_t *)(CONFIG_SYS_IMMR + QE_IMMR_OFFSET);
239 	u_qe_firmware_resume((const void *)CONFIG_SYS_QE_FW_ADDR, qe_immrr);
240 	out_be32(&qe_immrr->iram.iready, QE_IRAM_READY);
241 }
242 #endif
243 
244 void qe_reset(void)
245 {
246 	qe_issue_cmd(QE_RESET, QE_CR_SUBBLOCK_INVALID,
247 			 (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
248 }
249 
250 #ifdef CONFIG_QE
251 void qe_assign_page(uint snum, uint para_ram_base)
252 {
253 	u32	cecr;
254 
255 	out_be32(&qe_immr->cp.cecdr, para_ram_base);
256 	out_be32(&qe_immr->cp.cecr, ((u32) snum<<QE_CR_ASSIGN_PAGE_SNUM_SHIFT)
257 					 | QE_CR_FLG | QE_ASSIGN_PAGE);
258 
259 	/* Wait for the QE_CR_FLG to clear */
260 	do {
261 		cecr = in_be32(&qe_immr->cp.cecr);
262 	} while (cecr & QE_CR_FLG );
263 
264 	return;
265 }
266 #endif
267 
268 /*
269  * brg: 0~15 as BRG1~BRG16
270    rate: baud rate
271  * BRG input clock comes from the BRGCLK (internal clock generated from
272    the QE clock, it is one-half of the QE clock), If need the clock source
273    from CLKn pin, we have te change the function.
274  */
275 
276 #define BRG_CLK		(gd->arch.brg_clk)
277 
278 #ifdef CONFIG_QE
279 int qe_set_brg(uint brg, uint rate)
280 {
281 	volatile uint	*bp;
282 	u32		divisor;
283 	int		div16 = 0;
284 
285 	if (brg >= QE_NUM_OF_BRGS)
286 		return -EINVAL;
287 	bp = (uint *)&qe_immr->brg.brgc1;
288 	bp += brg;
289 
290 	divisor = (BRG_CLK / rate);
291 	if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
292 		div16 = 1;
293 		divisor /= 16;
294 	}
295 
296 	*bp = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) | QE_BRGC_ENABLE;
297 	__asm__ __volatile__("sync");
298 
299 	if (div16) {
300 		*bp |= QE_BRGC_DIV16;
301 		__asm__ __volatile__("sync");
302 	}
303 
304 	return 0;
305 }
306 #endif
307 
308 /* Set ethernet MII clock master
309 */
310 int qe_set_mii_clk_src(int ucc_num)
311 {
312 	u32	cmxgcr;
313 
314 	/* check if the UCC number is in range. */
315 	if ((ucc_num > UCC_MAX_NUM - 1) || (ucc_num < 0)) {
316 		printf("%s: ucc num not in ranges\n", __FUNCTION__);
317 		return -EINVAL;
318 	}
319 
320 	cmxgcr = in_be32(&qe_immr->qmx.cmxgcr);
321 	cmxgcr &= ~QE_CMXGCR_MII_ENET_MNG_MASK;
322 	cmxgcr |= (ucc_num <<QE_CMXGCR_MII_ENET_MNG_SHIFT);
323 	out_be32(&qe_immr->qmx.cmxgcr, cmxgcr);
324 
325 	return 0;
326 }
327 
328 /* Firmware information stored here for qe_get_firmware_info() */
329 static struct qe_firmware_info qe_firmware_info;
330 
331 /*
332  * Set to 1 if QE firmware has been uploaded, and therefore
333  * qe_firmware_info contains valid data.
334  */
335 static int qe_firmware_uploaded;
336 
337 /*
338  * Upload a QE microcode
339  *
340  * This function is a worker function for qe_upload_firmware().  It does
341  * the actual uploading of the microcode.
342  */
343 static void qe_upload_microcode(const void *base,
344 	const struct qe_microcode *ucode)
345 {
346 	const u32 *code = base + be32_to_cpu(ucode->code_offset);
347 	unsigned int i;
348 
349 	if (ucode->major || ucode->minor || ucode->revision)
350 		printf("QE: uploading microcode '%s' version %u.%u.%u\n",
351 		       (char *)ucode->id, (u16)ucode->major, (u16)ucode->minor,
352 		       (u16)ucode->revision);
353 	else
354 		printf("QE: uploading microcode '%s'\n", (char *)ucode->id);
355 
356 	/* Use auto-increment */
357 	out_be32(&qe_immr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
358 		QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);
359 
360 	for (i = 0; i < be32_to_cpu(ucode->count); i++)
361 		out_be32(&qe_immr->iram.idata, be32_to_cpu(code[i]));
362 }
363 
364 /*
365  * Upload a microcode to the I-RAM at a specific address.
366  *
367  * See docs/README.qe_firmware for information on QE microcode uploading.
368  *
369  * Currently, only version 1 is supported, so the 'version' field must be
370  * set to 1.
371  *
372  * The SOC model and revision are not validated, they are only displayed for
373  * informational purposes.
374  *
375  * 'calc_size' is the calculated size, in bytes, of the firmware structure and
376  * all of the microcode structures, minus the CRC.
377  *
378  * 'length' is the size that the structure says it is, including the CRC.
379  */
380 int qe_upload_firmware(const struct qe_firmware *firmware)
381 {
382 	unsigned int i;
383 	unsigned int j;
384 	u32 crc;
385 	size_t calc_size = sizeof(struct qe_firmware);
386 	size_t length;
387 	const struct qe_header *hdr;
388 #ifdef CONFIG_DEEP_SLEEP
389 #ifdef CONFIG_ARCH_LS1021A
390 	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
391 #else
392 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
393 #endif
394 #endif
395 	if (!firmware) {
396 		printf("Invalid address\n");
397 		return -EINVAL;
398 	}
399 
400 	hdr = &firmware->header;
401 	length = be32_to_cpu(hdr->length);
402 
403 	/* Check the magic */
404 	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
405 	    (hdr->magic[2] != 'F')) {
406 		printf("QE microcode not found\n");
407 #ifdef CONFIG_DEEP_SLEEP
408 		setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
409 #endif
410 		return -EPERM;
411 	}
412 
413 	/* Check the version */
414 	if (hdr->version != 1) {
415 		printf("Unsupported version\n");
416 		return -EPERM;
417 	}
418 
419 	/* Validate some of the fields */
420 	if ((firmware->count < 1) || (firmware->count > MAX_QE_RISC)) {
421 		printf("Invalid data\n");
422 		return -EINVAL;
423 	}
424 
425 	/* Validate the length and check if there's a CRC */
426 	calc_size += (firmware->count - 1) * sizeof(struct qe_microcode);
427 
428 	for (i = 0; i < firmware->count; i++)
429 		/*
430 		 * For situations where the second RISC uses the same microcode
431 		 * as the first, the 'code_offset' and 'count' fields will be
432 		 * zero, so it's okay to add those.
433 		 */
434 		calc_size += sizeof(u32) *
435 			be32_to_cpu(firmware->microcode[i].count);
436 
437 	/* Validate the length */
438 	if (length != calc_size + sizeof(u32)) {
439 		printf("Invalid length\n");
440 		return -EPERM;
441 	}
442 
443 	/*
444 	 * Validate the CRC.  We would normally call crc32_no_comp(), but that
445 	 * function isn't available unless you turn on JFFS support.
446 	 */
447 	crc = be32_to_cpu(*(u32 *)((void *)firmware + calc_size));
448 	if (crc != (crc32(-1, (const void *) firmware, calc_size) ^ -1)) {
449 		printf("Firmware CRC is invalid\n");
450 		return -EIO;
451 	}
452 
453 	/*
454 	 * If the microcode calls for it, split the I-RAM.
455 	 */
456 	if (!firmware->split) {
457 		out_be16(&qe_immr->cp.cercr,
458 			in_be16(&qe_immr->cp.cercr) | QE_CP_CERCR_CIR);
459 	}
460 
461 	if (firmware->soc.model)
462 		printf("Firmware '%s' for %u V%u.%u\n",
463 			firmware->id, be16_to_cpu(firmware->soc.model),
464 			firmware->soc.major, firmware->soc.minor);
465 	else
466 		printf("Firmware '%s'\n", firmware->id);
467 
468 	/*
469 	 * The QE only supports one microcode per RISC, so clear out all the
470 	 * saved microcode information and put in the new.
471 	 */
472 	memset(&qe_firmware_info, 0, sizeof(qe_firmware_info));
473 	strncpy(qe_firmware_info.id, (char *)firmware->id, 62);
474 	qe_firmware_info.extended_modes = firmware->extended_modes;
475 	memcpy(qe_firmware_info.vtraps, firmware->vtraps,
476 		sizeof(firmware->vtraps));
477 	qe_firmware_uploaded = 1;
478 
479 	/* Loop through each microcode. */
480 	for (i = 0; i < firmware->count; i++) {
481 		const struct qe_microcode *ucode = &firmware->microcode[i];
482 
483 		/* Upload a microcode if it's present */
484 		if (ucode->code_offset)
485 			qe_upload_microcode(firmware, ucode);
486 
487 		/* Program the traps for this processor */
488 		for (j = 0; j < 16; j++) {
489 			u32 trap = be32_to_cpu(ucode->traps[j]);
490 
491 			if (trap)
492 				out_be32(&qe_immr->rsp[i].tibcr[j], trap);
493 		}
494 
495 		/* Enable traps */
496 		out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
497 	}
498 
499 	return 0;
500 }
501 
502 #ifdef CONFIG_U_QE
503 /*
504  * Upload a microcode to the I-RAM at a specific address.
505  *
506  * See docs/README.qe_firmware for information on QE microcode uploading.
507  *
508  * Currently, only version 1 is supported, so the 'version' field must be
509  * set to 1.
510  *
511  * The SOC model and revision are not validated, they are only displayed for
512  * informational purposes.
513  *
514  * 'calc_size' is the calculated size, in bytes, of the firmware structure and
515  * all of the microcode structures, minus the CRC.
516  *
517  * 'length' is the size that the structure says it is, including the CRC.
518  */
519 int u_qe_upload_firmware(const struct qe_firmware *firmware)
520 {
521 	unsigned int i;
522 	unsigned int j;
523 	u32 crc;
524 	size_t calc_size = sizeof(struct qe_firmware);
525 	size_t length;
526 	const struct qe_header *hdr;
527 #ifdef CONFIG_DEEP_SLEEP
528 #ifdef CONFIG_ARCH_LS1021A
529 	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
530 #else
531 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
532 #endif
533 #endif
534 	if (!firmware) {
535 		printf("Invalid address\n");
536 		return -EINVAL;
537 	}
538 
539 	hdr = &firmware->header;
540 	length = be32_to_cpu(hdr->length);
541 
542 	/* Check the magic */
543 	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
544 	    (hdr->magic[2] != 'F')) {
545 		printf("Not a microcode\n");
546 #ifdef CONFIG_DEEP_SLEEP
547 		setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
548 #endif
549 		return -EPERM;
550 	}
551 
552 	/* Check the version */
553 	if (hdr->version != 1) {
554 		printf("Unsupported version\n");
555 		return -EPERM;
556 	}
557 
558 	/* Validate some of the fields */
559 	if ((firmware->count < 1) || (firmware->count > MAX_QE_RISC)) {
560 		printf("Invalid data\n");
561 		return -EINVAL;
562 	}
563 
564 	/* Validate the length and check if there's a CRC */
565 	calc_size += (firmware->count - 1) * sizeof(struct qe_microcode);
566 
567 	for (i = 0; i < firmware->count; i++)
568 		/*
569 		 * For situations where the second RISC uses the same microcode
570 		 * as the first, the 'code_offset' and 'count' fields will be
571 		 * zero, so it's okay to add those.
572 		 */
573 		calc_size += sizeof(u32) *
574 			be32_to_cpu(firmware->microcode[i].count);
575 
576 	/* Validate the length */
577 	if (length != calc_size + sizeof(u32)) {
578 		printf("Invalid length\n");
579 		return -EPERM;
580 	}
581 
582 	/*
583 	 * Validate the CRC.  We would normally call crc32_no_comp(), but that
584 	 * function isn't available unless you turn on JFFS support.
585 	 */
586 	crc = be32_to_cpu(*(u32 *)((void *)firmware + calc_size));
587 	if (crc != (crc32(-1, (const void *)firmware, calc_size) ^ -1)) {
588 		printf("Firmware CRC is invalid\n");
589 		return -EIO;
590 	}
591 
592 	/*
593 	 * If the microcode calls for it, split the I-RAM.
594 	 */
595 	if (!firmware->split) {
596 		out_be16(&qe_immr->cp.cercr,
597 			 in_be16(&qe_immr->cp.cercr) | QE_CP_CERCR_CIR);
598 	}
599 
600 	if (firmware->soc.model)
601 		printf("Firmware '%s' for %u V%u.%u\n",
602 		       firmware->id, be16_to_cpu(firmware->soc.model),
603 		       firmware->soc.major, firmware->soc.minor);
604 	else
605 		printf("Firmware '%s'\n", firmware->id);
606 
607 	/* Loop through each microcode. */
608 	for (i = 0; i < firmware->count; i++) {
609 		const struct qe_microcode *ucode = &firmware->microcode[i];
610 
611 		/* Upload a microcode if it's present */
612 		if (ucode->code_offset)
613 			qe_upload_microcode(firmware, ucode);
614 
615 		/* Program the traps for this processor */
616 		for (j = 0; j < 16; j++) {
617 			u32 trap = be32_to_cpu(ucode->traps[j]);
618 
619 			if (trap)
620 				out_be32(&qe_immr->rsp[i].tibcr[j], trap);
621 		}
622 
623 		/* Enable traps */
624 		out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
625 	}
626 
627 	return 0;
628 }
629 #endif
630 
631 #ifdef CONFIG_U_QE
632 int u_qe_firmware_resume(const struct qe_firmware *firmware, qe_map_t *qe_immrr)
633 {
634 	unsigned int i;
635 	unsigned int j;
636 	const struct qe_header *hdr;
637 	const u32 *code;
638 #ifdef CONFIG_DEEP_SLEEP
639 #ifdef CONFIG_PPC
640 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
641 #else
642 	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
643 #endif
644 #endif
645 
646 	if (!firmware)
647 		return -EINVAL;
648 
649 	hdr = &firmware->header;
650 
651 	/* Check the magic */
652 	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
653 	    (hdr->magic[2] != 'F')) {
654 #ifdef CONFIG_DEEP_SLEEP
655 		setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
656 #endif
657 		return -EPERM;
658 	}
659 
660 	/*
661 	 * If the microcode calls for it, split the I-RAM.
662 	 */
663 	if (!firmware->split) {
664 		out_be16(&qe_immrr->cp.cercr,
665 			 in_be16(&qe_immrr->cp.cercr) | QE_CP_CERCR_CIR);
666 	}
667 
668 	/* Loop through each microcode. */
669 	for (i = 0; i < firmware->count; i++) {
670 		const struct qe_microcode *ucode = &firmware->microcode[i];
671 
672 		/* Upload a microcode if it's present */
673 		if (!ucode->code_offset)
674 			return 0;
675 
676 		code = (const void *)firmware + be32_to_cpu(ucode->code_offset);
677 
678 		/* Use auto-increment */
679 		out_be32(&qe_immrr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
680 			QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);
681 
682 		for (i = 0; i < be32_to_cpu(ucode->count); i++)
683 			out_be32(&qe_immrr->iram.idata, be32_to_cpu(code[i]));
684 
685 		/* Program the traps for this processor */
686 		for (j = 0; j < 16; j++) {
687 			u32 trap = be32_to_cpu(ucode->traps[j]);
688 
689 			if (trap)
690 				out_be32(&qe_immrr->rsp[i].tibcr[j], trap);
691 		}
692 
693 		/* Enable traps */
694 		out_be32(&qe_immrr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
695 	}
696 
697 	return 0;
698 }
699 #endif
700 
701 struct qe_firmware_info *qe_get_firmware_info(void)
702 {
703 	return qe_firmware_uploaded ? &qe_firmware_info : NULL;
704 }
705 
706 static int qe_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
707 {
708 	ulong addr;
709 
710 	if (argc < 3)
711 		return cmd_usage(cmdtp);
712 
713 	if (strcmp(argv[1], "fw") == 0) {
714 		addr = simple_strtoul(argv[2], NULL, 16);
715 
716 		if (!addr) {
717 			printf("Invalid address\n");
718 			return -EINVAL;
719 		}
720 
721 		/*
722 		 * If a length was supplied, compare that with the 'length'
723 		 * field.
724 		 */
725 
726 		if (argc > 3) {
727 			ulong length = simple_strtoul(argv[3], NULL, 16);
728 			struct qe_firmware *firmware = (void *) addr;
729 
730 			if (length != be32_to_cpu(firmware->header.length)) {
731 				printf("Length mismatch\n");
732 				return -EINVAL;
733 			}
734 		}
735 
736 		return qe_upload_firmware((const struct qe_firmware *) addr);
737 	}
738 
739 	return cmd_usage(cmdtp);
740 }
741 
742 U_BOOT_CMD(
743 	qe, 4, 0, qe_cmd,
744 	"QUICC Engine commands",
745 	"fw <addr> [<length>] - Upload firmware binary at address <addr> to "
746 		"the QE,\n"
747 	"\twith optional length <length> verification."
748 );
749