1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * board/renesas/koelsch/koelsch_spl.c 4 * 5 * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com> 6 */ 7 8 #include <common.h> 9 #include <malloc.h> 10 #include <dm/platform_data/serial_sh.h> 11 #include <asm/processor.h> 12 #include <asm/mach-types.h> 13 #include <asm/io.h> 14 #include <linux/errno.h> 15 #include <asm/arch/sys_proto.h> 16 #include <asm/gpio.h> 17 #include <asm/arch/rmobile.h> 18 #include <asm/arch/rcar-mstp.h> 19 20 #include <spl.h> 21 22 #define TMU0_MSTP125 BIT(25) 23 #define SCIF0_MSTP721 BIT(21) 24 #define QSPI_MSTP917 BIT(17) 25 26 #define SD2CKCR 0xE615026C 27 #define SD_97500KHZ 0x7 28 29 struct reg_config { 30 u16 off; 31 u32 val; 32 }; 33 34 static void dbsc_wait(u16 reg) 35 { 36 static const u32 dbsc3_0_base = DBSC3_0_BASE; 37 static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000; 38 39 while (!(readl(dbsc3_0_base + reg) & BIT(0))) 40 ; 41 42 while (!(readl(dbsc3_1_base + reg) & BIT(0))) 43 ; 44 } 45 46 static void spl_init_sys(void) 47 { 48 u32 r0 = 0; 49 50 writel(0xa5a5a500, 0xe6020004); 51 writel(0xa5a5a500, 0xe6030004); 52 53 asm volatile( 54 /* ICIALLU - Invalidate I$ to PoU */ 55 "mcr 15, 0, %0, cr7, cr5, 0 \n" 56 /* BPIALL - Invalidate branch predictors */ 57 "mcr 15, 0, %0, cr7, cr5, 6 \n" 58 /* Set SCTLR[IZ] */ 59 "mrc 15, 0, %0, cr1, cr0, 0 \n" 60 "orr %0, #0x1800 \n" 61 "mcr 15, 0, %0, cr1, cr0, 0 \n" 62 "isb sy \n" 63 :"=r"(r0)); 64 } 65 66 static void spl_init_pfc(void) 67 { 68 static const struct reg_config pfc_with_unlock[] = { 69 { 0x0090, 0x60000000 }, 70 { 0x0094, 0x60000000 }, 71 { 0x0098, 0x00800200 }, 72 { 0x009c, 0x00000000 }, 73 { 0x0020, 0x00000000 }, 74 { 0x0024, 0x00000000 }, 75 { 0x0028, 0x000244c8 }, 76 { 0x002c, 0x00000000 }, 77 { 0x0030, 0x00002400 }, 78 { 0x0034, 0x01520000 }, 79 { 0x0038, 0x00724003 }, 80 { 0x003c, 0x00000000 }, 81 { 0x0040, 0x00000000 }, 82 { 0x0044, 0x00000000 }, 83 { 0x0048, 0x00000000 }, 84 { 0x004c, 0x00000000 }, 85 { 0x0050, 0x00000000 }, 86 { 0x0054, 0x00000000 }, 87 { 0x0058, 0x00000000 }, 88 { 0x005c, 0x00000000 }, 89 { 0x0160, 0x00000000 }, 90 { 0x0004, 0xffffffff }, 91 { 0x0008, 0x00ec3fff }, 92 { 0x000c, 0x3bc001e7 }, 93 { 0x0010, 0x5bffffff }, 94 { 0x0014, 0x1ffffffb }, 95 { 0x0018, 0x01bffff0 }, 96 { 0x001c, 0xcf7fffff }, 97 { 0x0074, 0x0381fc00 }, 98 }; 99 100 static const struct reg_config pfc_without_unlock[] = { 101 { 0x0100, 0xffffffdf }, 102 { 0x0104, 0xc883c3ff }, 103 { 0x0108, 0x1201f3c9 }, 104 { 0x010c, 0x00000000 }, 105 { 0x0110, 0xffffeb04 }, 106 { 0x0114, 0xc003ffff }, 107 { 0x0118, 0x0800000f }, 108 { 0x011c, 0x001800f0 }, 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 } 125 126 static void spl_init_gpio(void) 127 { 128 static const u16 gpio_offs[] = { 129 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x5400, 0x5800 130 }; 131 132 static const struct reg_config gpio_set[] = { 133 { 0x2000, 0x04381000 }, 134 { 0x5000, 0x00000000 }, 135 { 0x5800, 0x000e0000 }, 136 137 }; 138 139 static const struct reg_config gpio_clr[] = { 140 { 0x1000, 0x00000000 }, 141 { 0x2000, 0x04381010 }, 142 { 0x3000, 0x00000000 }, 143 { 0x4000, 0x00000000 }, 144 { 0x5000, 0x00400000 }, 145 { 0x5400, 0x00000000 }, 146 { 0x5800, 0x000e0380 }, 147 }; 148 149 static const u32 gpio_base = 0xe6050000; 150 151 unsigned int i; 152 153 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 154 writel(0, gpio_base | 0x20 | gpio_offs[i]); 155 156 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 157 writel(0, gpio_base | 0x00 | gpio_offs[i]); 158 159 for (i = 0; i < ARRAY_SIZE(gpio_set); i++) 160 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off); 161 162 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++) 163 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off); 164 } 165 166 static void spl_init_lbsc(void) 167 { 168 static const struct reg_config lbsc_config[] = { 169 { 0x00, 0x00000020 }, 170 { 0x08, 0x00002020 }, 171 { 0x30, 0x2a103320 }, 172 { 0x38, 0xff70ff70 }, 173 }; 174 175 static const u16 lbsc_offs[] = { 176 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180 177 }; 178 179 static const u32 lbsc_base = 0xfec00200; 180 181 unsigned int i; 182 183 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) { 184 writel(lbsc_config[i].val, 185 lbsc_base | lbsc_config[i].off); 186 writel(lbsc_config[i].val, 187 lbsc_base | (lbsc_config[i].off + 4)); 188 } 189 190 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++) 191 writel(0, lbsc_base | lbsc_offs[i]); 192 } 193 194 static void spl_init_dbsc(void) 195 { 196 static const struct reg_config dbsc_config1[] = { 197 { 0x0018, 0x21000000 }, 198 { 0x0018, 0x11000000 }, 199 { 0x0018, 0x10000000 }, 200 { 0x0280, 0x0000a55a }, 201 { 0x0290, 0x00000010 }, 202 { 0x02a0, 0xf004649b }, 203 { 0x0020, 0x00000007 }, 204 { 0x0024, 0x0f030a02 }, 205 { 0x0030, 0x00000001 }, 206 { 0x00b0, 0x00000000 }, 207 { 0x0040, 0x0000000b }, 208 { 0x0044, 0x00000008 }, 209 { 0x0048, 0x00000000 }, 210 { 0x0050, 0x0000000b }, 211 { 0x0054, 0x000c000b }, 212 { 0x0058, 0x00000027 }, 213 { 0x005c, 0x0000001c }, 214 { 0x0060, 0x00000006 }, 215 { 0x0064, 0x00000020 }, 216 { 0x0068, 0x00000008 }, 217 { 0x006c, 0x0000000c }, 218 { 0x0070, 0x00000009 }, 219 { 0x0074, 0x00000012 }, 220 { 0x0078, 0x000000d0 }, 221 { 0x007c, 0x00140005 }, 222 { 0x0080, 0x00050004 }, 223 { 0x0084, 0x70233005 }, 224 { 0x0088, 0x000c0000 }, 225 { 0x008c, 0x00000300 }, 226 { 0x0090, 0x00000040 }, 227 { 0x0100, 0x00000001 }, 228 { 0x00c0, 0x00020001 }, 229 { 0x00c8, 0x20082008 }, 230 { 0x0380, 0x00020002 }, 231 { 0x0390, 0x0000001f }, 232 }; 233 234 static const struct reg_config dbsc_config5[] = { 235 { 0x0244, 0x00000011 }, 236 { 0x0290, 0x00000006 }, 237 { 0x02a0, 0x0005c000 }, 238 { 0x0290, 0x00000003 }, 239 { 0x02a0, 0x0300c481 }, 240 { 0x0290, 0x00000023 }, 241 { 0x02a0, 0x00fdb6c0 }, 242 { 0x0290, 0x00000011 }, 243 { 0x02a0, 0x1000040b }, 244 { 0x0290, 0x00000012 }, 245 { 0x02a0, 0x9d9cbb66 }, 246 { 0x0290, 0x00000013 }, 247 { 0x02a0, 0x1a868400 }, 248 { 0x0290, 0x00000014 }, 249 { 0x02a0, 0x300214d8 }, 250 { 0x0290, 0x00000015 }, 251 { 0x02a0, 0x00000d70 }, 252 { 0x0290, 0x00000016 }, 253 { 0x02a0, 0x00000006 }, 254 { 0x0290, 0x00000017 }, 255 { 0x02a0, 0x00000018 }, 256 { 0x0290, 0x0000001a }, 257 { 0x02a0, 0x910035c7 }, 258 { 0x0290, 0x00000004 }, 259 }; 260 261 static const struct reg_config dbsc_config6[] = { 262 { 0x0290, 0x00000001 }, 263 { 0x02a0, 0x00000181 }, 264 { 0x0018, 0x11000000 }, 265 { 0x0290, 0x00000004 }, 266 }; 267 268 static const struct reg_config dbsc_config7[] = { 269 { 0x0290, 0x00000001 }, 270 { 0x02a0, 0x0000fe01 }, 271 { 0x0290, 0x00000004 }, 272 }; 273 274 static const struct reg_config dbsc_config8[] = { 275 { 0x0304, 0x00000000 }, 276 { 0x00f4, 0x01004c20 }, 277 { 0x00f8, 0x014000aa }, 278 { 0x00e0, 0x00000140 }, 279 { 0x00e4, 0x00081860 }, 280 { 0x00e8, 0x00010000 }, 281 { 0x0014, 0x00000001 }, 282 { 0x0010, 0x00000001 }, 283 { 0x0280, 0x00000000 }, 284 }; 285 286 static const u32 dbsc3_0_base = DBSC3_0_BASE; 287 static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000; 288 unsigned int i; 289 290 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) { 291 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off); 292 writel(dbsc_config1[i].val, dbsc3_1_base | dbsc_config1[i].off); 293 } 294 295 dbsc_wait(0x240); 296 297 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) { 298 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off); 299 writel(dbsc_config5[i].val, dbsc3_1_base | dbsc_config5[i].off); 300 } 301 302 dbsc_wait(0x2a0); 303 304 for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++) { 305 writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off); 306 writel(dbsc_config6[i].val, dbsc3_1_base | dbsc_config6[i].off); 307 } 308 309 dbsc_wait(0x2a0); 310 311 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) { 312 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off); 313 writel(dbsc_config7[i].val, dbsc3_1_base | dbsc_config7[i].off); 314 } 315 316 dbsc_wait(0x2a0); 317 318 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) { 319 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off); 320 writel(dbsc_config8[i].val, dbsc3_1_base | dbsc_config8[i].off); 321 } 322 323 } 324 325 static void spl_init_qspi(void) 326 { 327 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917); 328 329 static const u32 qspi_base = 0xe6b10000; 330 331 writeb(0x08, qspi_base + 0x00); 332 writeb(0x00, qspi_base + 0x01); 333 writeb(0x06, qspi_base + 0x02); 334 writeb(0x01, qspi_base + 0x0a); 335 writeb(0x00, qspi_base + 0x0b); 336 writeb(0x00, qspi_base + 0x0c); 337 writeb(0x00, qspi_base + 0x0d); 338 writeb(0x00, qspi_base + 0x0e); 339 340 writew(0xe080, qspi_base + 0x10); 341 342 writeb(0xc0, qspi_base + 0x18); 343 writeb(0x00, qspi_base + 0x18); 344 writeb(0x00, qspi_base + 0x08); 345 writeb(0x48, qspi_base + 0x00); 346 } 347 348 void board_init_f(ulong dummy) 349 { 350 int i; 351 352 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125); 353 mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721); 354 355 /* 356 * SD0 clock is set to 97.5MHz by default. 357 * Set SD2 to the 97.5MHz as well. 358 */ 359 writel(SD_97500KHZ, SD2CKCR); 360 361 spl_init_sys(); 362 spl_init_pfc(); 363 spl_init_gpio(); 364 spl_init_lbsc(); 365 366 /* Unknown, likely ES1.0-specific delay */ 367 for (i = 0; i < 100000; i++) 368 asm volatile("nop"); 369 370 spl_init_dbsc(); 371 spl_init_qspi(); 372 } 373 374 void spl_board_init(void) 375 { 376 /* UART clocks enabled and gd valid - init serial console */ 377 preloader_console_init(); 378 } 379 380 void board_boot_order(u32 *spl_boot_list) 381 { 382 const u32 jtag_magic = 0x1337c0de; 383 const u32 load_magic = 0xb33fc0de; 384 385 /* 386 * If JTAG probe sets special word at 0xe6300020, then it must 387 * put U-Boot into RAM and SPL will start it from RAM. 388 */ 389 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) { 390 printf("JTAG boot detected!\n"); 391 392 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic) 393 ; 394 395 spl_boot_list[0] = BOOT_DEVICE_RAM; 396 spl_boot_list[1] = BOOT_DEVICE_NONE; 397 398 return; 399 } 400 401 /* Boot from SPI NOR with YMODEM UART fallback. */ 402 spl_boot_list[0] = BOOT_DEVICE_SPI; 403 spl_boot_list[1] = BOOT_DEVICE_UART; 404 spl_boot_list[2] = BOOT_DEVICE_NONE; 405 } 406 407 void reset_cpu(ulong addr) 408 { 409 } 410