1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015 Freescale Semiconductor, Inc.
4 *
5 * Author: Fabio Estevam <fabio.estevam@freescale.com>
6 *
7 * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
8 *
9 * Based on SPL code from Solidrun tree, which is:
10 * Author: Tungyi Lin <tungyilin1127@gmail.com>
11 *
12 * Derived from EDM_CF_IMX6 code by TechNexion,Inc
13 * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
14 */
15
16 #include <common.h>
17 #include <image.h>
18 #include <init.h>
19 #include <log.h>
20 #include <asm/arch/clock.h>
21 #include <asm/arch/imx-regs.h>
22 #include <asm/arch/iomux.h>
23 #include <asm/arch/mx6-pins.h>
24 #include <asm/arch/mxc_hdmi.h>
25 #include <env.h>
26 #include <asm/global_data.h>
27 #include <linux/delay.h>
28 #include <linux/errno.h>
29 #include <asm/gpio.h>
30 #include <asm/mach-imx/iomux-v3.h>
31 #include <asm/mach-imx/sata.h>
32 #include <asm/mach-imx/video.h>
33 #include <mmc.h>
34 #include <fsl_esdhc_imx.h>
35 #include <malloc.h>
36 #include <asm/arch/crm_regs.h>
37 #include <asm/io.h>
38 #include <asm/arch/sys_proto.h>
39 #include <spl.h>
40 #include <usb.h>
41 #include <usb/ehci-ci.h>
42
43 DECLARE_GLOBAL_DATA_PTR;
44
45 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
46 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
47 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
48
49 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
50 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
51 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
52
53 #define USB_H1_VBUS IMX_GPIO_NR(1, 0)
54
55 enum board_type {
56 CUBOXI = 0x00,
57 HUMMINGBOARD = 0x01,
58 HUMMINGBOARD2 = 0x02,
59 UNKNOWN = 0x03,
60 };
61
62 static struct gpio_desc board_detect_desc[5];
63
64 #define MEM_STRIDE 0x4000000
get_ram_size_stride_test(u32 * base,u32 maxsize)65 static u32 get_ram_size_stride_test(u32 *base, u32 maxsize)
66 {
67 volatile u32 *addr;
68 u32 save[64];
69 u32 cnt;
70 u32 size;
71 int i = 0;
72
73 /* First save the data */
74 for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) {
75 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
76 sync ();
77 save[i++] = *addr;
78 sync ();
79 }
80
81 /* First write a signature */
82 * (volatile u32 *)base = 0x12345678;
83 for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) {
84 * (volatile u32 *)((u32)base + size) = size;
85 sync ();
86 if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */
87 break;
88 }
89 }
90
91 /* Restore the data */
92 for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) {
93 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
94 sync ();
95 *addr = save[i--];
96 sync ();
97 }
98
99 return (size);
100 }
101
dram_init(void)102 int dram_init(void)
103 {
104 u32 max_size = imx_ddr_size();
105
106 gd->ram_size = get_ram_size_stride_test((u32 *) CONFIG_SYS_SDRAM_BASE,
107 (u32)max_size);
108
109 return 0;
110 }
111
112 static iomux_v3_cfg_t const uart1_pads[] = {
113 IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
114 IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
115 };
116
117 static iomux_v3_cfg_t const usdhc2_pads[] = {
118 IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
119 IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
120 IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
121 IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
122 IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
123 IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
124 };
125
126 static iomux_v3_cfg_t const usdhc3_pads[] = {
127 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
128 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
129 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
130 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
131 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
132 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
133 IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
134 IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
135 IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
136 IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
137 IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
138 };
139
140 static iomux_v3_cfg_t const board_detect[] = {
141 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
142 IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
143 IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
144 IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)),
145 };
146
147 static iomux_v3_cfg_t const som_rev_detect[] = {
148 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
149 IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)),
150 IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
151 };
152
setup_iomux_uart(void)153 static void setup_iomux_uart(void)
154 {
155 SETUP_IOMUX_PADS(uart1_pads);
156 }
157
board_mmc_get_env_dev(int devno)158 int board_mmc_get_env_dev(int devno)
159 {
160 return devno;
161 }
162
163 #ifdef CONFIG_VIDEO_IPUV3
do_enable_hdmi(struct display_info_t const * dev)164 static void do_enable_hdmi(struct display_info_t const *dev)
165 {
166 imx_enable_hdmi_phy();
167 }
168
169 struct display_info_t const displays[] = {
170 {
171 .bus = -1,
172 .addr = 0,
173 .pixfmt = IPU_PIX_FMT_RGB24,
174 .detect = detect_hdmi,
175 .enable = do_enable_hdmi,
176 .mode = {
177 .name = "HDMI",
178 /* 1024x768@60Hz (VESA)*/
179 .refresh = 60,
180 .xres = 1024,
181 .yres = 768,
182 .pixclock = 15384,
183 .left_margin = 160,
184 .right_margin = 24,
185 .upper_margin = 29,
186 .lower_margin = 3,
187 .hsync_len = 136,
188 .vsync_len = 6,
189 .sync = FB_SYNC_EXT,
190 .vmode = FB_VMODE_NONINTERLACED
191 }
192 }
193 };
194
195 size_t display_count = ARRAY_SIZE(displays);
196
setup_display(void)197 static int setup_display(void)
198 {
199 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
200 int reg;
201 int timeout = 100000;
202
203 enable_ipu_clock();
204 imx_setup_hdmi();
205
206 /* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
207 setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
208
209 reg = readl(&ccm->analog_pll_video);
210 reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
211 reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
212 reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
213 reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
214 writel(reg, &ccm->analog_pll_video);
215
216 writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
217 writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
218
219 reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
220 writel(reg, &ccm->analog_pll_video);
221
222 while (timeout--)
223 if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
224 break;
225 if (timeout < 0) {
226 printf("Warning: video pll lock timeout!\n");
227 return -ETIMEDOUT;
228 }
229
230 reg = readl(&ccm->analog_pll_video);
231 reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
232 reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
233 writel(reg, &ccm->analog_pll_video);
234
235 /* gate ipu1_di0_clk */
236 clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
237
238 /* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */
239 reg = readl(&ccm->chsccdr);
240 reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
241 MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK |
242 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
243 reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
244 (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
245 (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
246 writel(reg, &ccm->chsccdr);
247
248 /* enable ipu1_di0_clk */
249 setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
250
251 return 0;
252 }
253 #endif /* CONFIG_VIDEO_IPUV3 */
254
setup_fec(void)255 static int setup_fec(void)
256 {
257 struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
258 int ret;
259
260 ret = enable_fec_anatop_clock(0, ENET_25MHZ);
261 if (ret)
262 return ret;
263
264 /* set gpr1[ENET_CLK_SEL] */
265 setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
266
267 return 0;
268 }
269
board_early_init_f(void)270 int board_early_init_f(void)
271 {
272 setup_iomux_uart();
273
274 #ifdef CONFIG_CMD_SATA
275 setup_sata();
276 #endif
277 setup_fec();
278
279 return 0;
280 }
281
board_init(void)282 int board_init(void)
283 {
284 int ret = 0;
285
286 /* address of boot parameters */
287 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
288
289 #ifdef CONFIG_VIDEO_IPUV3
290 ret = setup_display();
291 #endif
292
293 return ret;
294 }
295
request_detect_gpios(void)296 static int request_detect_gpios(void)
297 {
298 int node;
299 int ret;
300
301 node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
302 "solidrun,hummingboard-detect");
303 if (node < 0)
304 return -ENODEV;
305
306 ret = gpio_request_list_by_name_nodev(offset_to_ofnode(node),
307 "detect-gpios", board_detect_desc,
308 ARRAY_SIZE(board_detect_desc), GPIOD_IS_IN);
309
310 return ret;
311 }
312
free_detect_gpios(void)313 static int free_detect_gpios(void)
314 {
315 return gpio_free_list_nodev(board_detect_desc,
316 ARRAY_SIZE(board_detect_desc));
317 }
318
board_type(void)319 static enum board_type board_type(void)
320 {
321 int val1, val2, val3;
322
323 SETUP_IOMUX_PADS(board_detect);
324
325 /*
326 * Machine selection -
327 * Machine val1, val2, val3
328 * ----------------------------
329 * HB2 x x 0
330 * HB rev 3.x x 0 x
331 * CBi 0 1 x
332 * HB 1 1 x
333 */
334
335 gpio_direction_input(IMX_GPIO_NR(2, 8));
336 val3 = gpio_get_value(IMX_GPIO_NR(2, 8));
337
338 if (val3 == 0)
339 return HUMMINGBOARD2;
340
341 gpio_direction_input(IMX_GPIO_NR(3, 4));
342 val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
343
344 if (val2 == 0)
345 return HUMMINGBOARD;
346
347 gpio_direction_input(IMX_GPIO_NR(4, 9));
348 val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
349
350 if (val1 == 0) {
351 return CUBOXI;
352 } else {
353 return HUMMINGBOARD;
354 }
355 }
356
is_rev_15_som(void)357 static bool is_rev_15_som(void)
358 {
359 int val1, val2;
360 SETUP_IOMUX_PADS(som_rev_detect);
361
362 val1 = gpio_get_value(IMX_GPIO_NR(6, 0));
363 val2 = gpio_get_value(IMX_GPIO_NR(6, 4));
364
365 if (val1 == 1 && val2 == 0)
366 return true;
367
368 return false;
369 }
370
has_emmc(void)371 static bool has_emmc(void)
372 {
373 struct mmc *mmc;
374 mmc = find_mmc_device(2);
375 if (!mmc)
376 return 0;
377 return (mmc_get_op_cond(mmc) < 0) ? 0 : 1;
378 }
379
checkboard(void)380 int checkboard(void)
381 {
382 request_detect_gpios();
383
384 switch (board_type()) {
385 case CUBOXI:
386 puts("Board: MX6 Cubox-i");
387 break;
388 case HUMMINGBOARD:
389 puts("Board: MX6 HummingBoard");
390 break;
391 case HUMMINGBOARD2:
392 puts("Board: MX6 HummingBoard2");
393 break;
394 case UNKNOWN:
395 default:
396 puts("Board: Unknown\n");
397 goto out;
398 }
399
400 if (is_rev_15_som())
401 puts(" (som rev 1.5)\n");
402 else
403 puts("\n");
404
405 free_detect_gpios();
406 out:
407 return 0;
408 }
409
410 /* Override the default implementation, DT model is not accurate */
show_board_info(void)411 int show_board_info(void)
412 {
413 return checkboard();
414 }
415
board_late_init(void)416 int board_late_init(void)
417 {
418 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
419 request_detect_gpios();
420
421 switch (board_type()) {
422 case CUBOXI:
423 env_set("board_name", "CUBOXI");
424 break;
425 case HUMMINGBOARD:
426 env_set("board_name", "HUMMINGBOARD");
427 break;
428 case HUMMINGBOARD2:
429 env_set("board_name", "HUMMINGBOARD2");
430 break;
431 case UNKNOWN:
432 default:
433 env_set("board_name", "CUBOXI");
434 }
435
436 if (is_mx6dq())
437 env_set("board_rev", "MX6Q");
438 else
439 env_set("board_rev", "MX6DL");
440
441 if (is_rev_15_som())
442 env_set("som_rev", "V15");
443
444 if (has_emmc())
445 env_set("has_emmc", "yes");
446
447 free_detect_gpios();
448 #endif
449
450 return 0;
451 }
452
453 /*
454 * This is not a perfect match. Avoid dependency on the DM GPIO driver needed
455 * for accurate board detection. Hummingboard2 DT is good enough for U-Boot on
456 * all Hummingboard/Cubox-i platforms.
457 */
board_fit_config_name_match(const char * name)458 int board_fit_config_name_match(const char *name)
459 {
460 char tmp_name[36];
461
462 snprintf(tmp_name, sizeof(tmp_name), "%s-hummingboard2-emmc-som-v15",
463 is_mx6dq() ? "imx6q" : "imx6dl");
464
465 return strcmp(name, tmp_name);
466 }
467
board_boot_order(u32 * spl_boot_list)468 void board_boot_order(u32 *spl_boot_list)
469 {
470 struct src *psrc = (struct src *)SRC_BASE_ADDR;
471 unsigned int reg = readl(&psrc->sbmr1) >> 11;
472 u32 boot_mode = imx6_src_get_boot_mode() & IMX6_BMODE_MASK;
473 unsigned int bmode = readl(&src_base->sbmr2);
474
475 /* If bmode is serial or USB phy is active, return serial */
476 if (((bmode >> 24) & 0x03) == 0x01 || is_usbotg_phy_active()) {
477 spl_boot_list[0] = BOOT_DEVICE_BOARD;
478 return;
479 }
480
481 switch (boot_mode >> IMX6_BMODE_SHIFT) {
482 case IMX6_BMODE_SD:
483 case IMX6_BMODE_ESD:
484 case IMX6_BMODE_MMC:
485 case IMX6_BMODE_EMMC:
486 /*
487 * Upon reading BOOT_CFG register the following map is done:
488 * Bit 11 and 12 of BOOT_CFG register can determine the current
489 * mmc port
490 * 0x1 SD2
491 * 0x2 SD3
492 */
493
494 reg &= 0x3; /* Only care about bottom 2 bits */
495 switch (reg) {
496 case 1:
497 SETUP_IOMUX_PADS(usdhc2_pads);
498 spl_boot_list[0] = BOOT_DEVICE_MMC1;
499 break;
500 case 2:
501 SETUP_IOMUX_PADS(usdhc3_pads);
502 spl_boot_list[0] = BOOT_DEVICE_MMC2;
503 break;
504 }
505 break;
506 default:
507 /* By default use USB downloader */
508 spl_boot_list[0] = BOOT_DEVICE_BOARD;
509 break;
510 }
511
512 /* As a last resort, use serial downloader */
513 spl_boot_list[1] = BOOT_DEVICE_BOARD;
514 }
515
516 #ifdef CONFIG_SPL_BUILD
517 #include <asm/arch/mx6-ddr.h>
518 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
519 .dram_sdclk_0 = 0x00020030,
520 .dram_sdclk_1 = 0x00020030,
521 .dram_cas = 0x00020030,
522 .dram_ras = 0x00020030,
523 .dram_reset = 0x000c0030,
524 .dram_sdcke0 = 0x00003000,
525 .dram_sdcke1 = 0x00003000,
526 .dram_sdba2 = 0x00000000,
527 .dram_sdodt0 = 0x00003030,
528 .dram_sdodt1 = 0x00003030,
529 .dram_sdqs0 = 0x00000030,
530 .dram_sdqs1 = 0x00000030,
531 .dram_sdqs2 = 0x00000030,
532 .dram_sdqs3 = 0x00000030,
533 .dram_sdqs4 = 0x00000030,
534 .dram_sdqs5 = 0x00000030,
535 .dram_sdqs6 = 0x00000030,
536 .dram_sdqs7 = 0x00000030,
537 .dram_dqm0 = 0x00020030,
538 .dram_dqm1 = 0x00020030,
539 .dram_dqm2 = 0x00020030,
540 .dram_dqm3 = 0x00020030,
541 .dram_dqm4 = 0x00020030,
542 .dram_dqm5 = 0x00020030,
543 .dram_dqm6 = 0x00020030,
544 .dram_dqm7 = 0x00020030,
545 };
546
547 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
548 .dram_sdclk_0 = 0x00000028,
549 .dram_sdclk_1 = 0x00000028,
550 .dram_cas = 0x00000028,
551 .dram_ras = 0x00000028,
552 .dram_reset = 0x000c0028,
553 .dram_sdcke0 = 0x00003000,
554 .dram_sdcke1 = 0x00003000,
555 .dram_sdba2 = 0x00000000,
556 .dram_sdodt0 = 0x00003030,
557 .dram_sdodt1 = 0x00003030,
558 .dram_sdqs0 = 0x00000028,
559 .dram_sdqs1 = 0x00000028,
560 .dram_sdqs2 = 0x00000028,
561 .dram_sdqs3 = 0x00000028,
562 .dram_sdqs4 = 0x00000028,
563 .dram_sdqs5 = 0x00000028,
564 .dram_sdqs6 = 0x00000028,
565 .dram_sdqs7 = 0x00000028,
566 .dram_dqm0 = 0x00000028,
567 .dram_dqm1 = 0x00000028,
568 .dram_dqm2 = 0x00000028,
569 .dram_dqm3 = 0x00000028,
570 .dram_dqm4 = 0x00000028,
571 .dram_dqm5 = 0x00000028,
572 .dram_dqm6 = 0x00000028,
573 .dram_dqm7 = 0x00000028,
574 };
575
576 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
577 .grp_ddr_type = 0x000C0000,
578 .grp_ddrmode_ctl = 0x00020000,
579 .grp_ddrpke = 0x00000000,
580 .grp_addds = 0x00000030,
581 .grp_ctlds = 0x00000030,
582 .grp_ddrmode = 0x00020000,
583 .grp_b0ds = 0x00000030,
584 .grp_b1ds = 0x00000030,
585 .grp_b2ds = 0x00000030,
586 .grp_b3ds = 0x00000030,
587 .grp_b4ds = 0x00000030,
588 .grp_b5ds = 0x00000030,
589 .grp_b6ds = 0x00000030,
590 .grp_b7ds = 0x00000030,
591 };
592
593 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
594 .grp_ddr_type = 0x000c0000,
595 .grp_ddrmode_ctl = 0x00020000,
596 .grp_ddrpke = 0x00000000,
597 .grp_addds = 0x00000028,
598 .grp_ctlds = 0x00000028,
599 .grp_ddrmode = 0x00020000,
600 .grp_b0ds = 0x00000028,
601 .grp_b1ds = 0x00000028,
602 .grp_b2ds = 0x00000028,
603 .grp_b3ds = 0x00000028,
604 .grp_b4ds = 0x00000028,
605 .grp_b5ds = 0x00000028,
606 .grp_b6ds = 0x00000028,
607 .grp_b7ds = 0x00000028,
608 };
609
610 /* microSOM with Dual processor and 1GB memory */
611 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
612 .p0_mpwldectrl0 = 0x00000000,
613 .p0_mpwldectrl1 = 0x00000000,
614 .p1_mpwldectrl0 = 0x00000000,
615 .p1_mpwldectrl1 = 0x00000000,
616 .p0_mpdgctrl0 = 0x0314031c,
617 .p0_mpdgctrl1 = 0x023e0304,
618 .p1_mpdgctrl0 = 0x03240330,
619 .p1_mpdgctrl1 = 0x03180260,
620 .p0_mprddlctl = 0x3630323c,
621 .p1_mprddlctl = 0x3436283a,
622 .p0_mpwrdlctl = 0x36344038,
623 .p1_mpwrdlctl = 0x422a423c,
624 };
625
626 /* microSOM with Quad processor and 2GB memory */
627 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
628 .p0_mpwldectrl0 = 0x00000000,
629 .p0_mpwldectrl1 = 0x00000000,
630 .p1_mpwldectrl0 = 0x00000000,
631 .p1_mpwldectrl1 = 0x00000000,
632 .p0_mpdgctrl0 = 0x0314031c,
633 .p0_mpdgctrl1 = 0x023e0304,
634 .p1_mpdgctrl0 = 0x03240330,
635 .p1_mpdgctrl1 = 0x03180260,
636 .p0_mprddlctl = 0x3630323c,
637 .p1_mprddlctl = 0x3436283a,
638 .p0_mpwrdlctl = 0x36344038,
639 .p1_mpwrdlctl = 0x422a423c,
640 };
641
642 /* microSOM with Solo processor and 512MB memory */
643 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
644 .p0_mpwldectrl0 = 0x0045004D,
645 .p0_mpwldectrl1 = 0x003A0047,
646 .p0_mpdgctrl0 = 0x023C0224,
647 .p0_mpdgctrl1 = 0x02000220,
648 .p0_mprddlctl = 0x44444846,
649 .p0_mpwrdlctl = 0x32343032,
650 };
651
652 /* microSOM with Dual lite processor and 1GB memory */
653 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
654 .p0_mpwldectrl0 = 0x0045004D,
655 .p0_mpwldectrl1 = 0x003A0047,
656 .p1_mpwldectrl0 = 0x001F001F,
657 .p1_mpwldectrl1 = 0x00210035,
658 .p0_mpdgctrl0 = 0x023C0224,
659 .p0_mpdgctrl1 = 0x02000220,
660 .p1_mpdgctrl0 = 0x02200220,
661 .p1_mpdgctrl1 = 0x02040208,
662 .p0_mprddlctl = 0x44444846,
663 .p1_mprddlctl = 0x4042463C,
664 .p0_mpwrdlctl = 0x32343032,
665 .p1_mpwrdlctl = 0x36363430,
666 };
667
668 static struct mx6_ddr3_cfg mem_ddr_2g = {
669 .mem_speed = 1600,
670 .density = 2,
671 .width = 16,
672 .banks = 8,
673 .rowaddr = 14,
674 .coladdr = 10,
675 .pagesz = 2,
676 .trcd = 1375,
677 .trcmin = 4875,
678 .trasmin = 3500,
679 };
680
681 static struct mx6_ddr3_cfg mem_ddr_4g = {
682 .mem_speed = 1600,
683 .density = 4,
684 .width = 16,
685 .banks = 8,
686 .rowaddr = 16,
687 .coladdr = 10,
688 .pagesz = 2,
689 .trcd = 1375,
690 .trcmin = 4875,
691 .trasmin = 3500,
692 };
693
ccgr_init(void)694 static void ccgr_init(void)
695 {
696 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
697
698 writel(0x00C03F3F, &ccm->CCGR0);
699 writel(0x0030FC03, &ccm->CCGR1);
700 writel(0x0FFFC000, &ccm->CCGR2);
701 writel(0x3FF00000, &ccm->CCGR3);
702 writel(0x00FFF300, &ccm->CCGR4);
703 writel(0x0F0000C3, &ccm->CCGR5);
704 writel(0x000003FF, &ccm->CCGR6);
705 }
706
spl_dram_init(int width)707 static void spl_dram_init(int width)
708 {
709 struct mx6_ddr_sysinfo sysinfo = {
710 /* width of data bus: 0=16, 1=32, 2=64 */
711 .dsize = width / 32,
712 /* config for full 4GB range so that get_mem_size() works */
713 .cs_density = 32, /* 32Gb per CS */
714 .ncs = 1, /* single chip select */
715 .cs1_mirror = 0,
716 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
717 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
718 .walat = 1, /* Write additional latency */
719 .ralat = 5, /* Read additional latency */
720 .mif3_mode = 3, /* Command prediction working mode */
721 .bi_on = 1, /* Bank interleaving enabled */
722 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
723 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
724 .ddr_type = DDR_TYPE_DDR3,
725 .refsel = 1, /* Refresh cycles at 32KHz */
726 .refr = 7, /* 8 refresh commands per refresh cycle */
727 };
728
729 if (is_mx6dq())
730 mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
731 else
732 mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
733
734 if (is_cpu_type(MXC_CPU_MX6D))
735 mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
736 else if (is_cpu_type(MXC_CPU_MX6Q))
737 mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
738 else if (is_cpu_type(MXC_CPU_MX6DL))
739 mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g);
740 else if (is_cpu_type(MXC_CPU_MX6SOLO))
741 mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
742 }
743
board_init_f(ulong dummy)744 void board_init_f(ulong dummy)
745 {
746 /* setup AIPS and disable watchdog */
747 arch_cpu_init();
748
749 ccgr_init();
750 gpr_init();
751
752 /* iomux and setup of i2c */
753 board_early_init_f();
754
755 /* setup GP timer */
756 timer_init();
757
758 /* UART clocks enabled and gd valid - init serial console */
759 preloader_console_init();
760
761 /* DDR initialization */
762 if (is_cpu_type(MXC_CPU_MX6SOLO))
763 spl_dram_init(32);
764 else
765 spl_dram_init(64);
766
767 /* Clear the BSS. */
768 memset(__bss_start, 0, __bss_end - __bss_start);
769
770 /* load/boot image from boot device */
771 board_init_r(NULL, 0);
772 }
773 #endif
774