1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2018 NXP
4 */
5
6 #include <common.h>
7 #include <clk.h>
8 #include <cpu.h>
9 #include <cpu_func.h>
10 #include <dm.h>
11 #include <init.h>
12 #include <log.h>
13 #include <asm/cache.h>
14 #include <asm/global_data.h>
15 #include <dm/device-internal.h>
16 #include <dm/lists.h>
17 #include <dm/uclass.h>
18 #include <errno.h>
19 #include <spl.h>
20 #include <thermal.h>
21 #include <asm/arch/sci/sci.h>
22 #include <asm/arch/sys_proto.h>
23 #include <asm/arch-imx/cpu.h>
24 #include <asm/armv8/cpu.h>
25 #include <asm/armv8/mmu.h>
26 #include <asm/setup.h>
27 #include <asm/mach-imx/boot_mode.h>
28 #include <spl.h>
29
30 DECLARE_GLOBAL_DATA_PTR;
31
32 #define BT_PASSOVER_TAG 0x504F
get_pass_over_info(void)33 struct pass_over_info_t *get_pass_over_info(void)
34 {
35 struct pass_over_info_t *p =
36 (struct pass_over_info_t *)PASS_OVER_INFO_ADDR;
37
38 if (p->barker != BT_PASSOVER_TAG ||
39 p->len != sizeof(struct pass_over_info_t))
40 return NULL;
41
42 return p;
43 }
44
arch_cpu_init(void)45 int arch_cpu_init(void)
46 {
47 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_RECOVER_DATA_SECTION)
48 spl_save_restore_data();
49 #endif
50
51 #ifdef CONFIG_SPL_BUILD
52 struct pass_over_info_t *pass_over;
53
54 if (is_soc_rev(CHIP_REV_A)) {
55 pass_over = get_pass_over_info();
56 if (pass_over && pass_over->g_ap_mu == 0) {
57 /*
58 * When ap_mu is 0, means the U-Boot booted
59 * from first container
60 */
61 sc_misc_boot_status(-1, SC_MISC_BOOT_STATUS_SUCCESS);
62 }
63 }
64 #endif
65
66 return 0;
67 }
68
arch_cpu_init_dm(void)69 int arch_cpu_init_dm(void)
70 {
71 struct udevice *devp;
72 int node, ret;
73
74 node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "fsl,imx8-mu");
75
76 ret = uclass_get_device_by_of_offset(UCLASS_MISC, node, &devp);
77 if (ret) {
78 printf("could not get scu %d\n", ret);
79 return ret;
80 }
81
82 if (is_imx8qm()) {
83 ret = sc_pm_set_resource_power_mode(-1, SC_R_SMMU,
84 SC_PM_PW_MODE_ON);
85 if (ret)
86 return ret;
87 }
88
89 return 0;
90 }
91
print_bootinfo(void)92 int print_bootinfo(void)
93 {
94 enum boot_device bt_dev = get_boot_device();
95
96 puts("Boot: ");
97 switch (bt_dev) {
98 case SD1_BOOT:
99 puts("SD0\n");
100 break;
101 case SD2_BOOT:
102 puts("SD1\n");
103 break;
104 case SD3_BOOT:
105 puts("SD2\n");
106 break;
107 case MMC1_BOOT:
108 puts("MMC0\n");
109 break;
110 case MMC2_BOOT:
111 puts("MMC1\n");
112 break;
113 case MMC3_BOOT:
114 puts("MMC2\n");
115 break;
116 case FLEXSPI_BOOT:
117 puts("FLEXSPI\n");
118 break;
119 case SATA_BOOT:
120 puts("SATA\n");
121 break;
122 case NAND_BOOT:
123 puts("NAND\n");
124 break;
125 case USB_BOOT:
126 puts("USB\n");
127 break;
128 default:
129 printf("Unknown device %u\n", bt_dev);
130 break;
131 }
132
133 return 0;
134 }
135
get_boot_device(void)136 enum boot_device get_boot_device(void)
137 {
138 enum boot_device boot_dev = SD1_BOOT;
139
140 sc_rsrc_t dev_rsrc;
141
142 sc_misc_get_boot_dev(-1, &dev_rsrc);
143
144 switch (dev_rsrc) {
145 case SC_R_SDHC_0:
146 boot_dev = MMC1_BOOT;
147 break;
148 case SC_R_SDHC_1:
149 boot_dev = SD2_BOOT;
150 break;
151 case SC_R_SDHC_2:
152 boot_dev = SD3_BOOT;
153 break;
154 case SC_R_NAND:
155 boot_dev = NAND_BOOT;
156 break;
157 case SC_R_FSPI_0:
158 boot_dev = FLEXSPI_BOOT;
159 break;
160 case SC_R_SATA_0:
161 boot_dev = SATA_BOOT;
162 break;
163 case SC_R_USB_0:
164 case SC_R_USB_1:
165 case SC_R_USB_2:
166 boot_dev = USB_BOOT;
167 break;
168 default:
169 break;
170 }
171
172 return boot_dev;
173 }
174
175 #ifdef CONFIG_SERIAL_TAG
176 #define FUSE_UNIQUE_ID_WORD0 16
177 #define FUSE_UNIQUE_ID_WORD1 17
get_board_serial(struct tag_serialnr * serialnr)178 void get_board_serial(struct tag_serialnr *serialnr)
179 {
180 sc_err_t err;
181 u32 val1 = 0, val2 = 0;
182 u32 word1, word2;
183
184 if (!serialnr)
185 return;
186
187 word1 = FUSE_UNIQUE_ID_WORD0;
188 word2 = FUSE_UNIQUE_ID_WORD1;
189
190 err = sc_misc_otp_fuse_read(-1, word1, &val1);
191 if (err != SC_ERR_NONE) {
192 printf("%s fuse %d read error: %d\n", __func__, word1, err);
193 return;
194 }
195
196 err = sc_misc_otp_fuse_read(-1, word2, &val2);
197 if (err != SC_ERR_NONE) {
198 printf("%s fuse %d read error: %d\n", __func__, word2, err);
199 return;
200 }
201 serialnr->low = val1;
202 serialnr->high = val2;
203 }
204 #endif /*CONFIG_SERIAL_TAG*/
205
206 #ifdef CONFIG_ENV_IS_IN_MMC
board_mmc_get_env_dev(int devno)207 __weak int board_mmc_get_env_dev(int devno)
208 {
209 return CONFIG_SYS_MMC_ENV_DEV;
210 }
211
mmc_get_env_dev(void)212 int mmc_get_env_dev(void)
213 {
214 sc_rsrc_t dev_rsrc;
215 int devno;
216
217 sc_misc_get_boot_dev(-1, &dev_rsrc);
218
219 switch (dev_rsrc) {
220 case SC_R_SDHC_0:
221 devno = 0;
222 break;
223 case SC_R_SDHC_1:
224 devno = 1;
225 break;
226 case SC_R_SDHC_2:
227 devno = 2;
228 break;
229 default:
230 /* If not boot from sd/mmc, use default value */
231 return CONFIG_SYS_MMC_ENV_DEV;
232 }
233
234 return board_mmc_get_env_dev(devno);
235 }
236 #endif
237
238 #define MEMSTART_ALIGNMENT SZ_2M /* Align the memory start with 2MB */
239
get_owned_memreg(sc_rm_mr_t mr,sc_faddr_t * addr_start,sc_faddr_t * addr_end)240 static int get_owned_memreg(sc_rm_mr_t mr, sc_faddr_t *addr_start,
241 sc_faddr_t *addr_end)
242 {
243 sc_faddr_t start, end;
244 int ret;
245 bool owned;
246
247 owned = sc_rm_is_memreg_owned(-1, mr);
248 if (owned) {
249 ret = sc_rm_get_memreg_info(-1, mr, &start, &end);
250 if (ret) {
251 printf("Memreg get info failed, %d\n", ret);
252 return -EINVAL;
253 }
254 debug("0x%llx -- 0x%llx\n", start, end);
255 *addr_start = start;
256 *addr_end = end;
257
258 return 0;
259 }
260
261 return -EINVAL;
262 }
263
board_mem_get_layout(u64 * phys_sdram_1_start,u64 * phys_sdram_1_size,u64 * phys_sdram_2_start,u64 * phys_sdram_2_size)264 __weak void board_mem_get_layout(u64 *phys_sdram_1_start,
265 u64 *phys_sdram_1_size,
266 u64 *phys_sdram_2_start,
267 u64 *phys_sdram_2_size)
268 {
269 *phys_sdram_1_start = PHYS_SDRAM_1;
270 *phys_sdram_1_size = PHYS_SDRAM_1_SIZE;
271 *phys_sdram_2_start = PHYS_SDRAM_2;
272 *phys_sdram_2_size = PHYS_SDRAM_2_SIZE;
273 }
274
get_effective_memsize(void)275 phys_size_t get_effective_memsize(void)
276 {
277 sc_rm_mr_t mr;
278 sc_faddr_t start, end, end1, start_aligned;
279 u64 phys_sdram_1_start, phys_sdram_1_size;
280 u64 phys_sdram_2_start, phys_sdram_2_size;
281 int err;
282
283 board_mem_get_layout(&phys_sdram_1_start, &phys_sdram_1_size,
284 &phys_sdram_2_start, &phys_sdram_2_size);
285
286
287 end1 = (sc_faddr_t)phys_sdram_1_start + phys_sdram_1_size;
288 for (mr = 0; mr < 64; mr++) {
289 err = get_owned_memreg(mr, &start, &end);
290 if (!err) {
291 start_aligned = roundup(start, MEMSTART_ALIGNMENT);
292 /* Too small memory region, not use it */
293 if (start_aligned > end)
294 continue;
295
296 /* Find the memory region runs the U-Boot */
297 if (start >= phys_sdram_1_start && start <= end1 &&
298 (start <= CONFIG_SYS_TEXT_BASE &&
299 end >= CONFIG_SYS_TEXT_BASE)) {
300 if ((end + 1) <=
301 ((sc_faddr_t)phys_sdram_1_start +
302 phys_sdram_1_size))
303 return (end - phys_sdram_1_start + 1);
304 else
305 return phys_sdram_1_size;
306 }
307 }
308 }
309
310 return phys_sdram_1_size;
311 }
312
dram_init(void)313 int dram_init(void)
314 {
315 sc_rm_mr_t mr;
316 sc_faddr_t start, end, end1, end2;
317 u64 phys_sdram_1_start, phys_sdram_1_size;
318 u64 phys_sdram_2_start, phys_sdram_2_size;
319 int err;
320
321 board_mem_get_layout(&phys_sdram_1_start, &phys_sdram_1_size,
322 &phys_sdram_2_start, &phys_sdram_2_size);
323
324 end1 = (sc_faddr_t)phys_sdram_1_start + phys_sdram_1_size;
325 end2 = (sc_faddr_t)phys_sdram_2_start + phys_sdram_2_size;
326 for (mr = 0; mr < 64; mr++) {
327 err = get_owned_memreg(mr, &start, &end);
328 if (!err) {
329 start = roundup(start, MEMSTART_ALIGNMENT);
330 /* Too small memory region, not use it */
331 if (start > end)
332 continue;
333
334 if (start >= phys_sdram_1_start && start <= end1) {
335 if ((end + 1) <= end1)
336 gd->ram_size += end - start + 1;
337 else
338 gd->ram_size += end1 - start;
339 } else if (start >= phys_sdram_2_start &&
340 start <= end2) {
341 if ((end + 1) <= end2)
342 gd->ram_size += end - start + 1;
343 else
344 gd->ram_size += end2 - start;
345 }
346 }
347 }
348
349 /* If error, set to the default value */
350 if (!gd->ram_size) {
351 gd->ram_size = phys_sdram_1_size;
352 gd->ram_size += phys_sdram_2_size;
353 }
354 return 0;
355 }
356
dram_bank_sort(int current_bank)357 static void dram_bank_sort(int current_bank)
358 {
359 phys_addr_t start;
360 phys_size_t size;
361
362 while (current_bank > 0) {
363 if (gd->bd->bi_dram[current_bank - 1].start >
364 gd->bd->bi_dram[current_bank].start) {
365 start = gd->bd->bi_dram[current_bank - 1].start;
366 size = gd->bd->bi_dram[current_bank - 1].size;
367
368 gd->bd->bi_dram[current_bank - 1].start =
369 gd->bd->bi_dram[current_bank].start;
370 gd->bd->bi_dram[current_bank - 1].size =
371 gd->bd->bi_dram[current_bank].size;
372
373 gd->bd->bi_dram[current_bank].start = start;
374 gd->bd->bi_dram[current_bank].size = size;
375 }
376 current_bank--;
377 }
378 }
379
dram_init_banksize(void)380 int dram_init_banksize(void)
381 {
382 sc_rm_mr_t mr;
383 sc_faddr_t start, end, end1, end2;
384 int i = 0;
385 u64 phys_sdram_1_start, phys_sdram_1_size;
386 u64 phys_sdram_2_start, phys_sdram_2_size;
387 int err;
388
389 board_mem_get_layout(&phys_sdram_1_start, &phys_sdram_1_size,
390 &phys_sdram_2_start, &phys_sdram_2_size);
391
392 end1 = (sc_faddr_t)phys_sdram_1_start + phys_sdram_1_size;
393 end2 = (sc_faddr_t)phys_sdram_2_start + phys_sdram_2_size;
394 for (mr = 0; mr < 64 && i < CONFIG_NR_DRAM_BANKS; mr++) {
395 err = get_owned_memreg(mr, &start, &end);
396 if (!err) {
397 start = roundup(start, MEMSTART_ALIGNMENT);
398 if (start > end) /* Small memory region, no use it */
399 continue;
400
401 if (start >= phys_sdram_1_start && start <= end1) {
402 gd->bd->bi_dram[i].start = start;
403
404 if ((end + 1) <= end1)
405 gd->bd->bi_dram[i].size =
406 end - start + 1;
407 else
408 gd->bd->bi_dram[i].size = end1 - start;
409
410 dram_bank_sort(i);
411 i++;
412 } else if (start >= phys_sdram_2_start && start <= end2) {
413 gd->bd->bi_dram[i].start = start;
414
415 if ((end + 1) <= end2)
416 gd->bd->bi_dram[i].size =
417 end - start + 1;
418 else
419 gd->bd->bi_dram[i].size = end2 - start;
420
421 dram_bank_sort(i);
422 i++;
423 }
424 }
425 }
426
427 /* If error, set to the default value */
428 if (!i) {
429 gd->bd->bi_dram[0].start = phys_sdram_1_start;
430 gd->bd->bi_dram[0].size = phys_sdram_1_size;
431 gd->bd->bi_dram[1].start = phys_sdram_2_start;
432 gd->bd->bi_dram[1].size = phys_sdram_2_size;
433 }
434
435 return 0;
436 }
437
get_block_attrs(sc_faddr_t addr_start)438 static u64 get_block_attrs(sc_faddr_t addr_start)
439 {
440 u64 attr = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE |
441 PTE_BLOCK_PXN | PTE_BLOCK_UXN;
442 u64 phys_sdram_1_start, phys_sdram_1_size;
443 u64 phys_sdram_2_start, phys_sdram_2_size;
444
445 board_mem_get_layout(&phys_sdram_1_start, &phys_sdram_1_size,
446 &phys_sdram_2_start, &phys_sdram_2_size);
447
448 if ((addr_start >= phys_sdram_1_start &&
449 addr_start <= ((sc_faddr_t)phys_sdram_1_start + phys_sdram_1_size)) ||
450 (addr_start >= phys_sdram_2_start &&
451 addr_start <= ((sc_faddr_t)phys_sdram_2_start + phys_sdram_2_size)))
452 return (PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_OUTER_SHARE);
453
454 return attr;
455 }
456
get_block_size(sc_faddr_t addr_start,sc_faddr_t addr_end)457 static u64 get_block_size(sc_faddr_t addr_start, sc_faddr_t addr_end)
458 {
459 sc_faddr_t end1, end2;
460 u64 phys_sdram_1_start, phys_sdram_1_size;
461 u64 phys_sdram_2_start, phys_sdram_2_size;
462
463 board_mem_get_layout(&phys_sdram_1_start, &phys_sdram_1_size,
464 &phys_sdram_2_start, &phys_sdram_2_size);
465
466
467 end1 = (sc_faddr_t)phys_sdram_1_start + phys_sdram_1_size;
468 end2 = (sc_faddr_t)phys_sdram_2_start + phys_sdram_2_size;
469
470 if (addr_start >= phys_sdram_1_start && addr_start <= end1) {
471 if ((addr_end + 1) > end1)
472 return end1 - addr_start;
473 } else if (addr_start >= phys_sdram_2_start && addr_start <= end2) {
474 if ((addr_end + 1) > end2)
475 return end2 - addr_start;
476 }
477
478 return (addr_end - addr_start + 1);
479 }
480
481 #define MAX_PTE_ENTRIES 512
482 #define MAX_MEM_MAP_REGIONS 16
483
484 static struct mm_region imx8_mem_map[MAX_MEM_MAP_REGIONS];
485 struct mm_region *mem_map = imx8_mem_map;
486
enable_caches(void)487 void enable_caches(void)
488 {
489 sc_rm_mr_t mr;
490 sc_faddr_t start, end;
491 int err, i;
492
493 /* Create map for registers access from 0x1c000000 to 0x80000000*/
494 imx8_mem_map[0].virt = 0x1c000000UL;
495 imx8_mem_map[0].phys = 0x1c000000UL;
496 imx8_mem_map[0].size = 0x64000000UL;
497 imx8_mem_map[0].attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
498 PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN;
499
500 i = 1;
501 for (mr = 0; mr < 64 && i < MAX_MEM_MAP_REGIONS; mr++) {
502 err = get_owned_memreg(mr, &start, &end);
503 if (!err) {
504 imx8_mem_map[i].virt = start;
505 imx8_mem_map[i].phys = start;
506 imx8_mem_map[i].size = get_block_size(start, end);
507 imx8_mem_map[i].attrs = get_block_attrs(start);
508 i++;
509 }
510 }
511
512 if (i < MAX_MEM_MAP_REGIONS) {
513 imx8_mem_map[i].size = 0;
514 imx8_mem_map[i].attrs = 0;
515 } else {
516 puts("Error, need more MEM MAP REGIONS reserved\n");
517 icache_enable();
518 return;
519 }
520
521 for (i = 0; i < MAX_MEM_MAP_REGIONS; i++) {
522 debug("[%d] vir = 0x%llx phys = 0x%llx size = 0x%llx attrs = 0x%llx\n",
523 i, imx8_mem_map[i].virt, imx8_mem_map[i].phys,
524 imx8_mem_map[i].size, imx8_mem_map[i].attrs);
525 }
526
527 icache_enable();
528 dcache_enable();
529 }
530
531 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
get_page_table_size(void)532 u64 get_page_table_size(void)
533 {
534 u64 one_pt = MAX_PTE_ENTRIES * sizeof(u64);
535 u64 size = 0;
536
537 /*
538 * For each memory region, the max table size:
539 * 2 level 3 tables + 2 level 2 tables + 1 level 1 table
540 */
541 size = (2 + 2 + 1) * one_pt * MAX_MEM_MAP_REGIONS + one_pt;
542
543 /*
544 * We need to duplicate our page table once to have an emergency pt to
545 * resort to when splitting page tables later on
546 */
547 size *= 2;
548
549 /*
550 * We may need to split page tables later on if dcache settings change,
551 * so reserve up to 4 (random pick) page tables for that.
552 */
553 size += one_pt * 4;
554
555 return size;
556 }
557 #endif
558
559 #if defined(CONFIG_IMX8QM)
560 #define FUSE_MAC0_WORD0 452
561 #define FUSE_MAC0_WORD1 453
562 #define FUSE_MAC1_WORD0 454
563 #define FUSE_MAC1_WORD1 455
564 #elif defined(CONFIG_IMX8QXP)
565 #define FUSE_MAC0_WORD0 708
566 #define FUSE_MAC0_WORD1 709
567 #define FUSE_MAC1_WORD0 710
568 #define FUSE_MAC1_WORD1 711
569 #endif
570
imx_get_mac_from_fuse(int dev_id,unsigned char * mac)571 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
572 {
573 u32 word[2], val[2] = {};
574 int i, ret;
575
576 if (dev_id == 0) {
577 word[0] = FUSE_MAC0_WORD0;
578 word[1] = FUSE_MAC0_WORD1;
579 } else {
580 word[0] = FUSE_MAC1_WORD0;
581 word[1] = FUSE_MAC1_WORD1;
582 }
583
584 for (i = 0; i < 2; i++) {
585 ret = sc_misc_otp_fuse_read(-1, word[i], &val[i]);
586 if (ret < 0)
587 goto err;
588 }
589
590 mac[0] = val[0];
591 mac[1] = val[0] >> 8;
592 mac[2] = val[0] >> 16;
593 mac[3] = val[0] >> 24;
594 mac[4] = val[1];
595 mac[5] = val[1] >> 8;
596
597 debug("%s: MAC%d: %02x.%02x.%02x.%02x.%02x.%02x\n",
598 __func__, dev_id, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
599 return;
600 err:
601 printf("%s: fuse %d, err: %d\n", __func__, word[i], ret);
602 }
603
get_cpu_rev(void)604 u32 get_cpu_rev(void)
605 {
606 u32 id = 0, rev = 0;
607 int ret;
608
609 ret = sc_misc_get_control(-1, SC_R_SYSTEM, SC_C_ID, &id);
610 if (ret)
611 return 0;
612
613 rev = (id >> 5) & 0xf;
614 id = (id & 0x1f) + MXC_SOC_IMX8; /* Dummy ID for chip */
615
616 return (id << 12) | rev;
617 }
618
board_boot_order(u32 * spl_boot_list)619 void board_boot_order(u32 *spl_boot_list)
620 {
621 spl_boot_list[0] = spl_boot_device();
622
623 if (spl_boot_list[0] == BOOT_DEVICE_SPI) {
624 /* Check whether we own the flexspi0, if not, use NOR boot */
625 if (!sc_rm_is_resource_owned(-1, SC_R_FSPI_0))
626 spl_boot_list[0] = BOOT_DEVICE_NOR;
627 }
628 }
629
m4_parts_booted(void)630 bool m4_parts_booted(void)
631 {
632 sc_rm_pt_t m4_parts[2];
633 int err;
634
635 err = sc_rm_get_resource_owner(-1, SC_R_M4_0_PID0, &m4_parts[0]);
636 if (err) {
637 printf("%s get resource [%d] owner error: %d\n", __func__,
638 SC_R_M4_0_PID0, err);
639 return false;
640 }
641
642 if (sc_pm_is_partition_started(-1, m4_parts[0]))
643 return true;
644
645 if (is_imx8qm()) {
646 err = sc_rm_get_resource_owner(-1, SC_R_M4_1_PID0, &m4_parts[1]);
647 if (err) {
648 printf("%s get resource [%d] owner error: %d\n",
649 __func__, SC_R_M4_1_PID0, err);
650 return false;
651 }
652
653 if (sc_pm_is_partition_started(-1, m4_parts[1]))
654 return true;
655 }
656
657 return false;
658 }
659