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 <asm/arch/clock.h> 17 #include <asm/arch/imx-regs.h> 18 #include <asm/arch/iomux.h> 19 #include <asm/arch/mx6-pins.h> 20 #include <asm/arch/mxc_hdmi.h> 21 #include <linux/errno.h> 22 #include <asm/gpio.h> 23 #include <asm/mach-imx/iomux-v3.h> 24 #include <asm/mach-imx/sata.h> 25 #include <asm/mach-imx/video.h> 26 #include <mmc.h> 27 #include <fsl_esdhc.h> 28 #include <malloc.h> 29 #include <miiphy.h> 30 #include <netdev.h> 31 #include <asm/arch/crm_regs.h> 32 #include <asm/io.h> 33 #include <asm/arch/sys_proto.h> 34 #include <spl.h> 35 #include <usb.h> 36 #include <usb/ehci-ci.h> 37 38 DECLARE_GLOBAL_DATA_PTR; 39 40 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 41 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 42 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 43 44 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ 45 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 46 PAD_CTL_SRE_FAST | PAD_CTL_HYS) 47 48 #define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 49 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 50 51 #define ENET_PAD_CTRL_PD (PAD_CTL_PUS_100K_DOWN | \ 52 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) 53 54 #define ENET_PAD_CTRL_CLK ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \ 55 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) 56 57 #define ETH_PHY_RESET IMX_GPIO_NR(4, 15) 58 #define USB_H1_VBUS IMX_GPIO_NR(1, 0) 59 60 enum board_type { 61 CUBOXI = 0x00, 62 HUMMINGBOARD = 0x01, 63 HUMMINGBOARD2 = 0x02, 64 UNKNOWN = 0x03, 65 }; 66 67 #define MEM_STRIDE 0x4000000 68 static u32 get_ram_size_stride_test(u32 *base, u32 maxsize) 69 { 70 volatile u32 *addr; 71 u32 save[64]; 72 u32 cnt; 73 u32 size; 74 int i = 0; 75 76 /* First save the data */ 77 for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) { 78 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ 79 sync (); 80 save[i++] = *addr; 81 sync (); 82 } 83 84 /* First write a signature */ 85 * (volatile u32 *)base = 0x12345678; 86 for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) { 87 * (volatile u32 *)((u32)base + size) = size; 88 sync (); 89 if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */ 90 break; 91 } 92 } 93 94 /* Restore the data */ 95 for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) { 96 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ 97 sync (); 98 *addr = save[i--]; 99 sync (); 100 } 101 102 return (size); 103 } 104 105 int dram_init(void) 106 { 107 u32 max_size = imx_ddr_size(); 108 109 gd->ram_size = get_ram_size_stride_test((u32 *) CONFIG_SYS_SDRAM_BASE, 110 (u32)max_size); 111 112 return 0; 113 } 114 115 static iomux_v3_cfg_t const uart1_pads[] = { 116 IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 117 IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), 118 }; 119 120 static iomux_v3_cfg_t const usdhc2_pads[] = { 121 IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 122 IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 123 IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 124 IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 125 IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 126 IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 127 }; 128 129 static iomux_v3_cfg_t const usdhc3_pads[] = { 130 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 131 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 132 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 133 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 134 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 135 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 136 IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 137 IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 138 IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 139 IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 140 IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)), 141 }; 142 143 static iomux_v3_cfg_t const board_detect[] = { 144 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */ 145 IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)), 146 IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)), 147 IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)), 148 }; 149 150 static iomux_v3_cfg_t const som_rev_detect[] = { 151 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */ 152 IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)), 153 IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)), 154 }; 155 156 static iomux_v3_cfg_t const usb_pads[] = { 157 IOMUX_PADS(PAD_GPIO_0__GPIO1_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)), 158 }; 159 160 static void setup_iomux_uart(void) 161 { 162 SETUP_IOMUX_PADS(uart1_pads); 163 } 164 165 static struct fsl_esdhc_cfg usdhc_cfg = { 166 .esdhc_base = USDHC2_BASE_ADDR, 167 .max_bus_width = 4, 168 }; 169 170 static struct fsl_esdhc_cfg emmc_cfg = { 171 .esdhc_base = USDHC3_BASE_ADDR, 172 .max_bus_width = 8, 173 }; 174 175 int board_mmc_get_env_dev(int devno) 176 { 177 return devno - 1; 178 } 179 180 #define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4) 181 182 int board_mmc_getcd(struct mmc *mmc) 183 { 184 struct fsl_esdhc_cfg *cfg = mmc->priv; 185 int ret = 0; 186 187 switch (cfg->esdhc_base) { 188 case USDHC2_BASE_ADDR: 189 ret = !gpio_get_value(USDHC2_CD_GPIO); 190 break; 191 case USDHC3_BASE_ADDR: 192 ret = (mmc_get_op_cond(mmc) < 0) ? 0 : 1; /* eMMC/uSDHC3 has no CD GPIO */ 193 break; 194 } 195 196 return ret; 197 } 198 199 static int mmc_init_main(bd_t *bis) 200 { 201 int ret; 202 203 /* 204 * Following map is done: 205 * (U-Boot device node) (Physical Port) 206 * mmc0 Carrier board MicroSD 207 * mmc1 SOM eMMC 208 */ 209 SETUP_IOMUX_PADS(usdhc2_pads); 210 usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 211 ret = fsl_esdhc_initialize(bis, &usdhc_cfg); 212 if (ret) 213 return ret; 214 215 SETUP_IOMUX_PADS(usdhc3_pads); 216 emmc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 217 return fsl_esdhc_initialize(bis, &emmc_cfg); 218 } 219 220 static int mmc_init_spl(bd_t *bis) 221 { 222 struct src *psrc = (struct src *)SRC_BASE_ADDR; 223 unsigned reg = readl(&psrc->sbmr1) >> 11; 224 225 /* 226 * Upon reading BOOT_CFG register the following map is done: 227 * Bit 11 and 12 of BOOT_CFG register can determine the current 228 * mmc port 229 * 0x1 SD2 230 * 0x2 SD3 231 */ 232 switch (reg & 0x3) { 233 case 0x1: 234 SETUP_IOMUX_PADS(usdhc2_pads); 235 usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 236 gd->arch.sdhc_clk = usdhc_cfg.sdhc_clk; 237 return fsl_esdhc_initialize(bis, &usdhc_cfg); 238 case 0x2: 239 SETUP_IOMUX_PADS(usdhc3_pads); 240 emmc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); 241 gd->arch.sdhc_clk = emmc_cfg.sdhc_clk; 242 return fsl_esdhc_initialize(bis, &emmc_cfg); 243 } 244 245 return -ENODEV; 246 } 247 248 int board_mmc_init(bd_t *bis) 249 { 250 if (IS_ENABLED(CONFIG_SPL_BUILD)) 251 return mmc_init_spl(bis); 252 253 return mmc_init_main(bis); 254 } 255 256 static iomux_v3_cfg_t const enet_pads[] = { 257 IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), 258 IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 259 /* AR8035 reset */ 260 IOMUX_PADS(PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 261 /* AR8035 interrupt */ 262 IOMUX_PADS(PAD_DI0_PIN2__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL)), 263 /* GPIO16 -> AR8035 25MHz */ 264 IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(NO_PAD_CTRL)), 265 IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(NO_PAD_CTRL)), 266 IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 267 IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 268 IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 269 IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 270 IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)), 271 /* AR8035 CLK_25M --> ENET_REF_CLK (V22) */ 272 IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK)), 273 IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), 274 IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 275 IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 276 IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 277 IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), 278 IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 279 IOMUX_PADS(PAD_ENET_RXD0__GPIO1_IO27 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 280 IOMUX_PADS(PAD_ENET_RXD1__GPIO1_IO26 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)), 281 }; 282 283 static void setup_iomux_enet(void) 284 { 285 SETUP_IOMUX_PADS(enet_pads); 286 287 gpio_direction_output(ETH_PHY_RESET, 0); 288 mdelay(10); 289 gpio_set_value(ETH_PHY_RESET, 1); 290 udelay(100); 291 } 292 293 int board_phy_config(struct phy_device *phydev) 294 { 295 if (phydev->drv->config) 296 phydev->drv->config(phydev); 297 298 return 0; 299 } 300 301 /* On Cuboxi Ethernet PHY can be located at addresses 0x0 or 0x4 */ 302 #define ETH_PHY_MASK ((1 << 0x0) | (1 << 0x4)) 303 304 int board_eth_init(bd_t *bis) 305 { 306 struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; 307 struct mii_dev *bus; 308 struct phy_device *phydev; 309 310 int ret = enable_fec_anatop_clock(0, ENET_25MHZ); 311 if (ret) 312 return ret; 313 314 /* set gpr1[ENET_CLK_SEL] */ 315 setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK); 316 317 setup_iomux_enet(); 318 319 bus = fec_get_miibus(IMX_FEC_BASE, -1); 320 if (!bus) 321 return -EINVAL; 322 323 phydev = phy_find_by_mask(bus, ETH_PHY_MASK, PHY_INTERFACE_MODE_RGMII); 324 if (!phydev) { 325 ret = -EINVAL; 326 goto free_bus; 327 } 328 329 debug("using phy at address %d\n", phydev->addr); 330 ret = fec_probe(bis, -1, IMX_FEC_BASE, bus, phydev); 331 if (ret) 332 goto free_phydev; 333 334 return 0; 335 336 free_phydev: 337 free(phydev); 338 free_bus: 339 free(bus); 340 return ret; 341 } 342 343 #ifdef CONFIG_VIDEO_IPUV3 344 static void do_enable_hdmi(struct display_info_t const *dev) 345 { 346 imx_enable_hdmi_phy(); 347 } 348 349 struct display_info_t const displays[] = { 350 { 351 .bus = -1, 352 .addr = 0, 353 .pixfmt = IPU_PIX_FMT_RGB24, 354 .detect = detect_hdmi, 355 .enable = do_enable_hdmi, 356 .mode = { 357 .name = "HDMI", 358 /* 1024x768@60Hz (VESA)*/ 359 .refresh = 60, 360 .xres = 1024, 361 .yres = 768, 362 .pixclock = 15384, 363 .left_margin = 160, 364 .right_margin = 24, 365 .upper_margin = 29, 366 .lower_margin = 3, 367 .hsync_len = 136, 368 .vsync_len = 6, 369 .sync = FB_SYNC_EXT, 370 .vmode = FB_VMODE_NONINTERLACED 371 } 372 } 373 }; 374 375 size_t display_count = ARRAY_SIZE(displays); 376 377 static int setup_display(void) 378 { 379 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; 380 int reg; 381 int timeout = 100000; 382 383 enable_ipu_clock(); 384 imx_setup_hdmi(); 385 386 /* set video pll to 455MHz (24MHz * (37+11/12) / 2) */ 387 setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN); 388 389 reg = readl(&ccm->analog_pll_video); 390 reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT; 391 reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37); 392 reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT; 393 reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1); 394 writel(reg, &ccm->analog_pll_video); 395 396 writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num); 397 writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom); 398 399 reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN; 400 writel(reg, &ccm->analog_pll_video); 401 402 while (timeout--) 403 if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK) 404 break; 405 if (timeout < 0) { 406 printf("Warning: video pll lock timeout!\n"); 407 return -ETIMEDOUT; 408 } 409 410 reg = readl(&ccm->analog_pll_video); 411 reg |= BM_ANADIG_PLL_VIDEO_ENABLE; 412 reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS; 413 writel(reg, &ccm->analog_pll_video); 414 415 /* gate ipu1_di0_clk */ 416 clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK); 417 418 /* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */ 419 reg = readl(&ccm->chsccdr); 420 reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK | 421 MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK | 422 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK); 423 reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) | 424 (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) | 425 (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET); 426 writel(reg, &ccm->chsccdr); 427 428 /* enable ipu1_di0_clk */ 429 setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK); 430 431 return 0; 432 } 433 #endif /* CONFIG_VIDEO_IPUV3 */ 434 435 #ifdef CONFIG_USB_EHCI_MX6 436 static void setup_usb(void) 437 { 438 SETUP_IOMUX_PADS(usb_pads); 439 } 440 441 int board_ehci_hcd_init(int port) 442 { 443 if (port == 1) 444 gpio_direction_output(USB_H1_VBUS, 1); 445 446 return 0; 447 } 448 #endif 449 450 int board_early_init_f(void) 451 { 452 setup_iomux_uart(); 453 454 #ifdef CONFIG_CMD_SATA 455 setup_sata(); 456 #endif 457 458 #ifdef CONFIG_USB_EHCI_MX6 459 setup_usb(); 460 #endif 461 return 0; 462 } 463 464 int board_init(void) 465 { 466 int ret = 0; 467 468 /* address of boot parameters */ 469 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 470 471 #ifdef CONFIG_VIDEO_IPUV3 472 ret = setup_display(); 473 #endif 474 475 return ret; 476 } 477 478 static enum board_type board_type(void) 479 { 480 int val1, val2, val3; 481 482 SETUP_IOMUX_PADS(board_detect); 483 484 /* 485 * Machine selection - 486 * Machine val1, val2, val3 487 * ---------------------------- 488 * HB2 x x 0 489 * HB rev 3.x x 0 x 490 * CBi 0 1 x 491 * HB 1 1 x 492 */ 493 494 gpio_direction_input(IMX_GPIO_NR(2, 8)); 495 val3 = gpio_get_value(IMX_GPIO_NR(2, 8)); 496 497 if (val3 == 0) 498 return HUMMINGBOARD2; 499 500 gpio_direction_input(IMX_GPIO_NR(3, 4)); 501 val2 = gpio_get_value(IMX_GPIO_NR(3, 4)); 502 503 if (val2 == 0) 504 return HUMMINGBOARD; 505 506 gpio_direction_input(IMX_GPIO_NR(4, 9)); 507 val1 = gpio_get_value(IMX_GPIO_NR(4, 9)); 508 509 if (val1 == 0) { 510 return CUBOXI; 511 } else { 512 return HUMMINGBOARD; 513 } 514 } 515 516 static bool is_rev_15_som(void) 517 { 518 int val1, val2; 519 SETUP_IOMUX_PADS(som_rev_detect); 520 521 val1 = gpio_get_value(IMX_GPIO_NR(6, 0)); 522 val2 = gpio_get_value(IMX_GPIO_NR(6, 4)); 523 524 if (val1 == 1 && val2 == 0) 525 return true; 526 527 return false; 528 } 529 530 static bool has_emmc(void) 531 { 532 struct mmc *mmc; 533 mmc = find_mmc_device(1); 534 if (!mmc) 535 return 0; 536 return (mmc_get_op_cond(mmc) < 0) ? 0 : 1; 537 } 538 539 int checkboard(void) 540 { 541 switch (board_type()) { 542 case CUBOXI: 543 puts("Board: MX6 Cubox-i"); 544 break; 545 case HUMMINGBOARD: 546 puts("Board: MX6 HummingBoard"); 547 break; 548 case HUMMINGBOARD2: 549 puts("Board: MX6 HummingBoard2"); 550 break; 551 case UNKNOWN: 552 default: 553 puts("Board: Unknown\n"); 554 goto out; 555 } 556 557 if (is_rev_15_som()) 558 puts(" (som rev 1.5)\n"); 559 else 560 puts("\n"); 561 562 out: 563 return 0; 564 } 565 566 int board_late_init(void) 567 { 568 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 569 switch (board_type()) { 570 case CUBOXI: 571 env_set("board_name", "CUBOXI"); 572 break; 573 case HUMMINGBOARD: 574 env_set("board_name", "HUMMINGBOARD"); 575 break; 576 case HUMMINGBOARD2: 577 env_set("board_name", "HUMMINGBOARD2"); 578 break; 579 case UNKNOWN: 580 default: 581 env_set("board_name", "CUBOXI"); 582 } 583 584 if (is_mx6dq()) 585 env_set("board_rev", "MX6Q"); 586 else 587 env_set("board_rev", "MX6DL"); 588 589 if (is_rev_15_som()) 590 env_set("som_rev", "V15"); 591 592 if (has_emmc()) 593 env_set("has_emmc", "yes"); 594 595 #endif 596 597 return 0; 598 } 599 600 #ifdef CONFIG_SPL_BUILD 601 #include <asm/arch/mx6-ddr.h> 602 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = { 603 .dram_sdclk_0 = 0x00020030, 604 .dram_sdclk_1 = 0x00020030, 605 .dram_cas = 0x00020030, 606 .dram_ras = 0x00020030, 607 .dram_reset = 0x000c0030, 608 .dram_sdcke0 = 0x00003000, 609 .dram_sdcke1 = 0x00003000, 610 .dram_sdba2 = 0x00000000, 611 .dram_sdodt0 = 0x00003030, 612 .dram_sdodt1 = 0x00003030, 613 .dram_sdqs0 = 0x00000030, 614 .dram_sdqs1 = 0x00000030, 615 .dram_sdqs2 = 0x00000030, 616 .dram_sdqs3 = 0x00000030, 617 .dram_sdqs4 = 0x00000030, 618 .dram_sdqs5 = 0x00000030, 619 .dram_sdqs6 = 0x00000030, 620 .dram_sdqs7 = 0x00000030, 621 .dram_dqm0 = 0x00020030, 622 .dram_dqm1 = 0x00020030, 623 .dram_dqm2 = 0x00020030, 624 .dram_dqm3 = 0x00020030, 625 .dram_dqm4 = 0x00020030, 626 .dram_dqm5 = 0x00020030, 627 .dram_dqm6 = 0x00020030, 628 .dram_dqm7 = 0x00020030, 629 }; 630 631 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = { 632 .dram_sdclk_0 = 0x00000028, 633 .dram_sdclk_1 = 0x00000028, 634 .dram_cas = 0x00000028, 635 .dram_ras = 0x00000028, 636 .dram_reset = 0x000c0028, 637 .dram_sdcke0 = 0x00003000, 638 .dram_sdcke1 = 0x00003000, 639 .dram_sdba2 = 0x00000000, 640 .dram_sdodt0 = 0x00003030, 641 .dram_sdodt1 = 0x00003030, 642 .dram_sdqs0 = 0x00000028, 643 .dram_sdqs1 = 0x00000028, 644 .dram_sdqs2 = 0x00000028, 645 .dram_sdqs3 = 0x00000028, 646 .dram_sdqs4 = 0x00000028, 647 .dram_sdqs5 = 0x00000028, 648 .dram_sdqs6 = 0x00000028, 649 .dram_sdqs7 = 0x00000028, 650 .dram_dqm0 = 0x00000028, 651 .dram_dqm1 = 0x00000028, 652 .dram_dqm2 = 0x00000028, 653 .dram_dqm3 = 0x00000028, 654 .dram_dqm4 = 0x00000028, 655 .dram_dqm5 = 0x00000028, 656 .dram_dqm6 = 0x00000028, 657 .dram_dqm7 = 0x00000028, 658 }; 659 660 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = { 661 .grp_ddr_type = 0x000C0000, 662 .grp_ddrmode_ctl = 0x00020000, 663 .grp_ddrpke = 0x00000000, 664 .grp_addds = 0x00000030, 665 .grp_ctlds = 0x00000030, 666 .grp_ddrmode = 0x00020000, 667 .grp_b0ds = 0x00000030, 668 .grp_b1ds = 0x00000030, 669 .grp_b2ds = 0x00000030, 670 .grp_b3ds = 0x00000030, 671 .grp_b4ds = 0x00000030, 672 .grp_b5ds = 0x00000030, 673 .grp_b6ds = 0x00000030, 674 .grp_b7ds = 0x00000030, 675 }; 676 677 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = { 678 .grp_ddr_type = 0x000c0000, 679 .grp_ddrmode_ctl = 0x00020000, 680 .grp_ddrpke = 0x00000000, 681 .grp_addds = 0x00000028, 682 .grp_ctlds = 0x00000028, 683 .grp_ddrmode = 0x00020000, 684 .grp_b0ds = 0x00000028, 685 .grp_b1ds = 0x00000028, 686 .grp_b2ds = 0x00000028, 687 .grp_b3ds = 0x00000028, 688 .grp_b4ds = 0x00000028, 689 .grp_b5ds = 0x00000028, 690 .grp_b6ds = 0x00000028, 691 .grp_b7ds = 0x00000028, 692 }; 693 694 /* microSOM with Dual processor and 1GB memory */ 695 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = { 696 .p0_mpwldectrl0 = 0x00000000, 697 .p0_mpwldectrl1 = 0x00000000, 698 .p1_mpwldectrl0 = 0x00000000, 699 .p1_mpwldectrl1 = 0x00000000, 700 .p0_mpdgctrl0 = 0x0314031c, 701 .p0_mpdgctrl1 = 0x023e0304, 702 .p1_mpdgctrl0 = 0x03240330, 703 .p1_mpdgctrl1 = 0x03180260, 704 .p0_mprddlctl = 0x3630323c, 705 .p1_mprddlctl = 0x3436283a, 706 .p0_mpwrdlctl = 0x36344038, 707 .p1_mpwrdlctl = 0x422a423c, 708 }; 709 710 /* microSOM with Quad processor and 2GB memory */ 711 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = { 712 .p0_mpwldectrl0 = 0x00000000, 713 .p0_mpwldectrl1 = 0x00000000, 714 .p1_mpwldectrl0 = 0x00000000, 715 .p1_mpwldectrl1 = 0x00000000, 716 .p0_mpdgctrl0 = 0x0314031c, 717 .p0_mpdgctrl1 = 0x023e0304, 718 .p1_mpdgctrl0 = 0x03240330, 719 .p1_mpdgctrl1 = 0x03180260, 720 .p0_mprddlctl = 0x3630323c, 721 .p1_mprddlctl = 0x3436283a, 722 .p0_mpwrdlctl = 0x36344038, 723 .p1_mpwrdlctl = 0x422a423c, 724 }; 725 726 /* microSOM with Solo processor and 512MB memory */ 727 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = { 728 .p0_mpwldectrl0 = 0x0045004D, 729 .p0_mpwldectrl1 = 0x003A0047, 730 .p0_mpdgctrl0 = 0x023C0224, 731 .p0_mpdgctrl1 = 0x02000220, 732 .p0_mprddlctl = 0x44444846, 733 .p0_mpwrdlctl = 0x32343032, 734 }; 735 736 /* microSOM with Dual lite processor and 1GB memory */ 737 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = { 738 .p0_mpwldectrl0 = 0x0045004D, 739 .p0_mpwldectrl1 = 0x003A0047, 740 .p1_mpwldectrl0 = 0x001F001F, 741 .p1_mpwldectrl1 = 0x00210035, 742 .p0_mpdgctrl0 = 0x023C0224, 743 .p0_mpdgctrl1 = 0x02000220, 744 .p1_mpdgctrl0 = 0x02200220, 745 .p1_mpdgctrl1 = 0x02040208, 746 .p0_mprddlctl = 0x44444846, 747 .p1_mprddlctl = 0x4042463C, 748 .p0_mpwrdlctl = 0x32343032, 749 .p1_mpwrdlctl = 0x36363430, 750 }; 751 752 static struct mx6_ddr3_cfg mem_ddr_2g = { 753 .mem_speed = 1600, 754 .density = 2, 755 .width = 16, 756 .banks = 8, 757 .rowaddr = 14, 758 .coladdr = 10, 759 .pagesz = 2, 760 .trcd = 1375, 761 .trcmin = 4875, 762 .trasmin = 3500, 763 }; 764 765 static struct mx6_ddr3_cfg mem_ddr_4g = { 766 .mem_speed = 1600, 767 .density = 4, 768 .width = 16, 769 .banks = 8, 770 .rowaddr = 16, 771 .coladdr = 10, 772 .pagesz = 2, 773 .trcd = 1375, 774 .trcmin = 4875, 775 .trasmin = 3500, 776 }; 777 778 static void ccgr_init(void) 779 { 780 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; 781 782 writel(0x00C03F3F, &ccm->CCGR0); 783 writel(0x0030FC03, &ccm->CCGR1); 784 writel(0x0FFFC000, &ccm->CCGR2); 785 writel(0x3FF00000, &ccm->CCGR3); 786 writel(0x00FFF300, &ccm->CCGR4); 787 writel(0x0F0000C3, &ccm->CCGR5); 788 writel(0x000003FF, &ccm->CCGR6); 789 } 790 791 static void spl_dram_init(int width) 792 { 793 struct mx6_ddr_sysinfo sysinfo = { 794 /* width of data bus: 0=16, 1=32, 2=64 */ 795 .dsize = width / 32, 796 /* config for full 4GB range so that get_mem_size() works */ 797 .cs_density = 32, /* 32Gb per CS */ 798 .ncs = 1, /* single chip select */ 799 .cs1_mirror = 0, 800 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */ 801 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */ 802 .walat = 1, /* Write additional latency */ 803 .ralat = 5, /* Read additional latency */ 804 .mif3_mode = 3, /* Command prediction working mode */ 805 .bi_on = 1, /* Bank interleaving enabled */ 806 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ 807 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ 808 .ddr_type = DDR_TYPE_DDR3, 809 .refsel = 1, /* Refresh cycles at 32KHz */ 810 .refr = 7, /* 8 refresh commands per refresh cycle */ 811 }; 812 813 if (is_mx6dq()) 814 mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs); 815 else 816 mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs); 817 818 if (is_cpu_type(MXC_CPU_MX6D)) 819 mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g); 820 else if (is_cpu_type(MXC_CPU_MX6Q)) 821 mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g); 822 else if (is_cpu_type(MXC_CPU_MX6DL)) 823 mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g); 824 else if (is_cpu_type(MXC_CPU_MX6SOLO)) 825 mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g); 826 } 827 828 void board_init_f(ulong dummy) 829 { 830 /* setup AIPS and disable watchdog */ 831 arch_cpu_init(); 832 833 ccgr_init(); 834 gpr_init(); 835 836 /* iomux and setup of i2c */ 837 board_early_init_f(); 838 839 /* setup GP timer */ 840 timer_init(); 841 842 /* UART clocks enabled and gd valid - init serial console */ 843 preloader_console_init(); 844 845 /* DDR initialization */ 846 if (is_cpu_type(MXC_CPU_MX6SOLO)) 847 spl_dram_init(32); 848 else 849 spl_dram_init(64); 850 851 /* Clear the BSS. */ 852 memset(__bss_start, 0, __bss_end - __bss_start); 853 854 /* load/boot image from boot device */ 855 board_init_r(NULL, 0); 856 } 857 #endif 858