1// SPDX-License-Identifier: GPL-2.0 2/* 3 * board/renesas/alt/alt_spl.c 4 * 5 * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com> 6 */ 7 8#include <cpu_func.h> 9#include <init.h> 10#include <malloc.h> 11#include <dm/platform_data/serial_sh.h> 12#include <asm/processor.h> 13#include <asm/mach-types.h> 14#include <asm/io.h> 15#include <linux/bitops.h> 16#include <linux/errno.h> 17#include <asm/arch/sys_proto.h> 18#include <asm/gpio.h> 19#include <asm/arch/renesas.h> 20#include <asm/arch/rcar-mstp.h> 21 22#include <spl.h> 23 24#define TMU0_MSTP125 BIT(25) 25#define SCIF2_MSTP719 BIT(19) 26#define QSPI_MSTP917 BIT(17) 27 28#define SD1CKCR 0xE6150078 29#define SD_97500KHZ 0x7 30 31struct reg_config { 32 u16 off; 33 u32 val; 34}; 35 36static void dbsc_wait(u16 reg) 37{ 38 static const u32 dbsc3_0_base = DBSC3_0_BASE; 39 40 while (!(readl(dbsc3_0_base + reg) & BIT(0))) 41 ; 42} 43 44static void spl_init_sys(void) 45{ 46 u32 r0 = 0; 47 48 writel(0xa5a5a500, 0xe6020004); 49 writel(0xa5a5a500, 0xe6030004); 50 51 asm volatile( 52 /* ICIALLU - Invalidate I$ to PoU */ 53 "mcr 15, 0, %0, cr7, cr5, 0 \n" 54 /* BPIALL - Invalidate branch predictors */ 55 "mcr 15, 0, %0, cr7, cr5, 6 \n" 56 /* Set SCTLR[IZ] */ 57 "mrc 15, 0, %0, cr1, cr0, 0 \n" 58 "orr %0, #0x1800 \n" 59 "mcr 15, 0, %0, cr1, cr0, 0 \n" 60 "isb sy \n" 61 :"=r"(r0)); 62} 63 64static void spl_init_pfc(void) 65{ 66 static const struct reg_config pfc_with_unlock[] = { 67 { 0x0090, 0x00000000 }, 68 { 0x0094, 0x00000000 }, 69 { 0x0098, 0x00000000 }, 70 { 0x0020, 0x00000000 }, 71 { 0x0024, 0x00000000 }, 72 { 0x0028, 0x40000000 }, 73 { 0x002c, 0x00000155 }, 74 { 0x0030, 0x00000002 }, 75 { 0x0034, 0x00000000 }, 76 { 0x0038, 0x00000000 }, 77 { 0x003c, 0x00000000 }, 78 { 0x0040, 0x60000000 }, 79 { 0x0044, 0x36dab6db }, 80 { 0x0048, 0x926da012 }, 81 { 0x004c, 0x0008c383 }, 82 { 0x0050, 0x00000000 }, 83 { 0x0054, 0x00000140 }, 84 { 0x0004, 0xffffffff }, 85 { 0x0008, 0x00ec3fff }, 86 { 0x000c, 0x5bffffff }, 87 { 0x0010, 0x01bfe1ff }, 88 { 0x0014, 0x5bffffff }, 89 { 0x0018, 0x0f4b200f }, 90 { 0x001c, 0x03ffffff }, 91 }; 92 93 static const struct reg_config pfc_without_unlock[] = { 94 { 0x0100, 0x00000000 }, 95 { 0x0104, 0x4203fc00 }, 96 { 0x0108, 0x00000000 }, 97 { 0x010c, 0x159007ff }, 98 { 0x0110, 0x80000000 }, 99 { 0x0114, 0x00de481f }, 100 { 0x0118, 0x00000000 }, 101 }; 102 103 static const struct reg_config pfc_with_unlock2[] = { 104 { 0x0060, 0xffffffff }, 105 { 0x0064, 0xfffff000 }, 106 { 0x0068, 0x55555500 }, 107 { 0x006c, 0xffffff00 }, 108 { 0x0070, 0x00000000 }, 109 }; 110 111 static const u32 pfc_base = 0xe6060000; 112 113 unsigned int i; 114 115 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) { 116 writel(~pfc_with_unlock[i].val, pfc_base); 117 writel(pfc_with_unlock[i].val, 118 pfc_base | pfc_with_unlock[i].off); 119 } 120 121 for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++) 122 writel(pfc_without_unlock[i].val, 123 pfc_base | pfc_without_unlock[i].off); 124 125 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock2); i++) { 126 writel(~pfc_with_unlock2[i].val, pfc_base); 127 writel(pfc_with_unlock2[i].val, 128 pfc_base | pfc_with_unlock2[i].off); 129 } 130} 131 132static void spl_init_gpio(void) 133{ 134 static const u16 gpio_offs[] = { 135 0x1000, 0x2000, 0x3000, 0x4000, 0x5000 136 }; 137 138 static const struct reg_config gpio_set[] = { 139 { 0x2000, 0x24000000 }, 140 { 0x4000, 0xa4000000 }, 141 { 0x5000, 0x0004c000 }, 142 }; 143 144 static const struct reg_config gpio_clr[] = { 145 { 0x1000, 0x01000000 }, 146 { 0x2000, 0x24000000 }, 147 { 0x3000, 0x00000000 }, 148 { 0x4000, 0xa4000000 }, 149 { 0x5000, 0x0084c380 }, 150 }; 151 152 static const u32 gpio_base = 0xe6050000; 153 154 unsigned int i; 155 156 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 157 writel(0, gpio_base | 0x20 | gpio_offs[i]); 158 159 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 160 writel(0, gpio_base | 0x00 | gpio_offs[i]); 161 162 for (i = 0; i < ARRAY_SIZE(gpio_set); i++) 163 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off); 164 165 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++) 166 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off); 167} 168 169static void spl_init_lbsc(void) 170{ 171 static const struct reg_config lbsc_config[] = { 172 { 0x00, 0x00000020 }, 173 { 0x08, 0x00002020 }, 174 { 0x30, 0x2a103320 }, 175 { 0x38, 0xff70ff70 }, 176 }; 177 178 static const u16 lbsc_offs[] = { 179 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8 180 }; 181 182 static const u32 lbsc_base = 0xfec00200; 183 184 unsigned int i; 185 186 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) { 187 writel(lbsc_config[i].val, 188 lbsc_base | lbsc_config[i].off); 189 writel(lbsc_config[i].val, 190 lbsc_base | (lbsc_config[i].off + 4)); 191 } 192 193 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++) 194 writel(0, lbsc_base | lbsc_offs[i]); 195} 196 197static void spl_init_dbsc(void) 198{ 199 static const struct reg_config dbsc_config1[] = { 200 { 0x0018, 0x21000000 }, 201 { 0x0018, 0x11000000 }, 202 { 0x0018, 0x10000000 }, 203 { 0x0280, 0x0000a55a }, 204 { 0x0290, 0x00000001 }, 205 { 0x02a0, 0x80000000 }, 206 { 0x0290, 0x00000004 }, 207 }; 208 209 static const struct reg_config dbsc_config2[] = { 210 { 0x0290, 0x00000006 }, 211 { 0x02a0, 0x0005c000 }, 212 }; 213 214 static const struct reg_config dbsc_config4[] = { 215 { 0x0290, 0x00000010 }, 216 { 0x02a0, 0xf00464db }, 217 { 0x0290, 0x00000061 }, 218 { 0x02a0, 0x0000006d }, 219 { 0x0290, 0x00000001 }, 220 { 0x02a0, 0x00000073 }, 221 { 0x0020, 0x00000007 }, 222 { 0x0024, 0x0f030a02 }, 223 { 0x0030, 0x00000001 }, 224 { 0x00b0, 0x00000000 }, 225 { 0x0040, 0x00000009 }, 226 { 0x0044, 0x00000007 }, 227 { 0x0048, 0x00000000 }, 228 { 0x0050, 0x00000009 }, 229 { 0x0054, 0x000a0009 }, 230 { 0x0058, 0x00000021 }, 231 { 0x005c, 0x00000018 }, 232 { 0x0060, 0x00000005 }, 233 { 0x0064, 0x0000001b }, 234 { 0x0068, 0x00000007 }, 235 { 0x006c, 0x0000000a }, 236 { 0x0070, 0x00000009 }, 237 { 0x0074, 0x00000010 }, 238 { 0x0078, 0x000000ae }, 239 { 0x007c, 0x00140005 }, 240 { 0x0080, 0x00050004 }, 241 { 0x0084, 0x50213005 }, 242 { 0x0088, 0x000c0000 }, 243 { 0x008c, 0x00000200 }, 244 { 0x0090, 0x00000040 }, 245 { 0x0100, 0x00000001 }, 246 { 0x00c0, 0x00020001 }, 247 { 0x00c8, 0x20082008 }, 248 { 0x0380, 0x00020003 }, 249 { 0x0390, 0x0000001f }, 250 }; 251 252 static const struct reg_config dbsc_config5[] = { 253 { 0x0244, 0x00000011 }, 254 { 0x0290, 0x00000003 }, 255 { 0x02a0, 0x0300c4e1 }, 256 { 0x0290, 0x00000023 }, 257 { 0x02a0, 0x00fcb6d0 }, 258 { 0x0290, 0x00000011 }, 259 { 0x02a0, 0x1000040b }, 260 { 0x0290, 0x00000012 }, 261 { 0x02a0, 0x85589955 }, 262 { 0x0290, 0x00000013 }, 263 { 0x02a0, 0x1a852400 }, 264 { 0x0290, 0x00000014 }, 265 { 0x02a0, 0x300210b4 }, 266 { 0x0290, 0x00000015 }, 267 { 0x02a0, 0x00000b50 }, 268 { 0x0290, 0x00000016 }, 269 { 0x02a0, 0x00000006 }, 270 { 0x0290, 0x00000017 }, 271 { 0x02a0, 0x00000010 }, 272 { 0x0290, 0x0000001a }, 273 { 0x02a0, 0x910035c7 }, 274 { 0x0290, 0x00000004 }, 275 }; 276 277 static const struct reg_config dbsc_config6[] = { 278 { 0x0290, 0x00000001 }, 279 { 0x02a0, 0x00000181 }, 280 { 0x0018, 0x11000000 }, 281 { 0x0290, 0x00000004 }, 282 }; 283 284 static const struct reg_config dbsc_config7[] = { 285 { 0x0290, 0x00000001 }, 286 { 0x02a0, 0x0000fe01 }, 287 { 0x0304, 0x00000000 }, 288 { 0x00f4, 0x01004c20 }, 289 { 0x00f8, 0x014000aa }, 290 { 0x00e0, 0x00000140 }, 291 { 0x00e4, 0x00081450 }, 292 { 0x00e8, 0x00010000 }, 293 { 0x0290, 0x00000004 }, 294 }; 295 296 static const struct reg_config dbsc_config8[] = { 297 { 0x0014, 0x00000001 }, 298 { 0x0010, 0x00000001 }, 299 { 0x0280, 0x00000000 }, 300 }; 301 302 static const u32 dbsc3_0_base = DBSC3_0_BASE; 303 unsigned int i; 304 305 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) 306 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off); 307 308 dbsc_wait(0x2a0); 309 310 for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++) 311 writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off); 312 313 for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++) 314 writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off); 315 316 dbsc_wait(0x240); 317 318 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) 319 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off); 320 321 dbsc_wait(0x2a0); 322 323 for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++) 324 writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off); 325 326 dbsc_wait(0x2a0); 327 328 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) 329 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off); 330 331 dbsc_wait(0x2a0); 332 333 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) 334 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off); 335 336} 337 338static void spl_init_qspi(void) 339{ 340 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917); 341 342 static const u32 qspi_base = 0xe6b10000; 343 344 writeb(0x08, qspi_base + 0x00); 345 writeb(0x00, qspi_base + 0x01); 346 writeb(0x06, qspi_base + 0x02); 347 writeb(0x01, qspi_base + 0x0a); 348 writeb(0x00, qspi_base + 0x0b); 349 writeb(0x00, qspi_base + 0x0c); 350 writeb(0x00, qspi_base + 0x0d); 351 writeb(0x00, qspi_base + 0x0e); 352 353 writew(0xe080, qspi_base + 0x10); 354 355 writeb(0xc0, qspi_base + 0x18); 356 writeb(0x00, qspi_base + 0x18); 357 writeb(0x00, qspi_base + 0x08); 358 writeb(0x48, qspi_base + 0x00); 359} 360 361void board_init_f(ulong dummy) 362{ 363 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125); 364 mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF2_MSTP719); 365 366 /* Set SD1 to the 97.5MHz */ 367 writel(SD_97500KHZ, SD1CKCR); 368 369 spl_init_sys(); 370 spl_init_pfc(); 371 spl_init_gpio(); 372 spl_init_lbsc(); 373 spl_init_dbsc(); 374 spl_init_qspi(); 375} 376 377void spl_board_init(void) 378{ 379 /* UART clocks enabled and gd valid - init serial console */ 380 preloader_console_init(); 381} 382 383void board_boot_order(u32 *spl_boot_list) 384{ 385 const u32 jtag_magic = 0x1337c0de; 386 const u32 load_magic = 0xb33fc0de; 387 388 /* 389 * If JTAG probe sets special word at 0xe6300020, then it must 390 * put U-Boot into RAM and SPL will start it from RAM. 391 */ 392 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) { 393 printf("JTAG boot detected!\n"); 394 395 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic) 396 ; 397 398 spl_boot_list[0] = BOOT_DEVICE_RAM; 399 spl_boot_list[1] = BOOT_DEVICE_NONE; 400 401 return; 402 } 403 404 /* Boot from SPI NOR with YMODEM UART fallback. */ 405 spl_boot_list[0] = BOOT_DEVICE_SPI; 406 spl_boot_list[1] = BOOT_DEVICE_UART; 407 spl_boot_list[2] = BOOT_DEVICE_NONE; 408} 409 410void reset_cpu(void) 411{ 412} 413