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