1 /* 2 * board/renesas/lager/lager_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 SCIF0_MSTP721 BIT(21) 25 #define QSPI_MSTP917 BIT(17) 26 27 #define SD2CKCR 0xE615026C 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, 0xc0000000 }, 69 { 0x0020, 0x00000000 }, 70 { 0x0024, 0x00000000 }, 71 { 0x0028, 0x00000000 }, 72 { 0x002c, 0x20000000 }, 73 { 0x0030, 0x00001249 }, 74 { 0x0034, 0x00000278 }, 75 { 0x0038, 0x00000841 }, 76 { 0x003c, 0x00000000 }, 77 { 0x0040, 0x00000000 }, 78 { 0x0044, 0x10000000 }, 79 { 0x0048, 0x00000001 }, 80 { 0x004c, 0x0004aab0 }, 81 { 0x0050, 0x37301b00 }, 82 { 0x0054, 0x00048da3 }, 83 { 0x0058, 0x089044a1 }, 84 { 0x005c, 0x2a3a55b4 }, 85 { 0x0160, 0x00000003 }, 86 { 0x0004, 0xffffffff }, 87 { 0x0008, 0x2aef3fff }, 88 { 0x000c, 0x3fffffff }, 89 { 0x0010, 0xff7fc07f }, 90 { 0x0014, 0x7f3ff3f8 }, 91 { 0x0018, 0x1cfdfff7 }, 92 }; 93 94 static const struct reg_config pfc_without_unlock[] = { 95 { 0x0100, 0x1fffffff }, 96 { 0x0104, 0xffff0318 }, 97 { 0x0108, 0x387fffe1 }, 98 { 0x010c, 0x00803f80 }, 99 { 0x0110, 0x1520009f }, 100 { 0x0114, 0x00000000 }, 101 { 0x0118, 0x00000000 }, 102 }; 103 104 static const u32 pfc_base = 0xe6060000; 105 106 unsigned int i; 107 108 for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) { 109 writel(~pfc_with_unlock[i].val, pfc_base); 110 writel(pfc_with_unlock[i].val, 111 pfc_base | pfc_with_unlock[i].off); 112 } 113 114 for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++) 115 writel(pfc_without_unlock[i].val, 116 pfc_base | pfc_without_unlock[i].off); 117 } 118 119 static void spl_init_gpio(void) 120 { 121 static const u16 gpio_offs[] = { 122 0x1000, 0x3000, 0x4000, 0x5000 123 }; 124 125 static const struct reg_config gpio_set[] = { 126 { 0x4000, 0x00c00000 }, 127 { 0x5000, 0x63020000 }, 128 }; 129 130 static const struct reg_config gpio_clr[] = { 131 { 0x1000, 0x00000000 }, 132 { 0x3000, 0x00000000 }, 133 { 0x4000, 0x00c00000 }, 134 { 0x5000, 0xe3020000 }, 135 }; 136 137 static const u32 gpio_base = 0xe6050000; 138 139 unsigned int i; 140 141 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 142 writel(0, gpio_base | 0x20 | gpio_offs[i]); 143 144 for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) 145 writel(0, gpio_base | 0x00 | gpio_offs[i]); 146 147 for (i = 0; i < ARRAY_SIZE(gpio_set); i++) 148 writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off); 149 150 for (i = 0; i < ARRAY_SIZE(gpio_clr); i++) 151 writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off); 152 } 153 154 static void spl_init_lbsc(void) 155 { 156 static const struct reg_config lbsc_config[] = { 157 { 0x00, 0x00000020 }, 158 { 0x08, 0x00002020 }, 159 { 0x30, 0x02150326 }, 160 { 0x38, 0x077f077f }, 161 }; 162 163 static const u16 lbsc_offs[] = { 164 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180 165 }; 166 167 static const u32 lbsc_base = 0xfec00200; 168 169 unsigned int i; 170 171 for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) { 172 writel(lbsc_config[i].val, 173 lbsc_base | lbsc_config[i].off); 174 writel(lbsc_config[i].val, 175 lbsc_base | (lbsc_config[i].off + 4)); 176 } 177 178 for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++) 179 writel(0, lbsc_base | lbsc_offs[i]); 180 } 181 182 static void spl_init_dbsc(void) 183 { 184 static const struct reg_config dbsc_config1[] = { 185 { 0x0018, 0x21000000 }, 186 { 0x0018, 0x11000000 }, 187 { 0x0018, 0x10000000 }, 188 { 0x0280, 0x0000a55a }, 189 { 0x0290, 0x00000001 }, 190 { 0x02a0, 0x80000000 }, 191 { 0x0290, 0x00000004 }, 192 }; 193 194 static const struct reg_config dbsc_config4[] = { 195 { 0x0290, 0x00000010 }, 196 { 0x02a0, 0xf004649b }, 197 { 0x0290, 0x0000000f }, 198 { 0x02a0, 0x00181ee4 }, 199 { 0x0290, 0x00000060 }, 200 { 0x02a0, 0x330657b2 }, 201 { 0x0290, 0x00000001 }, 202 { 0x02a0, 0x00000071 }, 203 { 0x0020, 0x00000007 }, 204 { 0x0024, 0x10030a02 }, 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, 0x00000005 }, 215 { 0x0064, 0x00000018 }, 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, 0x0000000f }, 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, 0x9d5cbb66 }, 246 { 0x0290, 0x00000013 }, 247 { 0x02a0, 0x1a868300 }, 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 unsigned int i; 288 289 for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) 290 writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off); 291 292 dbsc_wait(0x2a0); 293 294 for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++) 295 writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off); 296 297 dbsc_wait(0x240); 298 299 for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) 300 writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off); 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); 306 307 dbsc_wait(0x2a0); 308 309 for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) 310 writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off); 311 312 dbsc_wait(0x2a0); 313 314 for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) 315 writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off); 316 317 } 318 319 static void spl_init_qspi(void) 320 { 321 mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917); 322 323 static const u32 qspi_base = 0xe6b10000; 324 325 writeb(0x08, qspi_base + 0x00); 326 writeb(0x00, qspi_base + 0x01); 327 writeb(0x06, qspi_base + 0x02); 328 writeb(0x01, qspi_base + 0x0a); 329 writeb(0x00, qspi_base + 0x0b); 330 writeb(0x00, qspi_base + 0x0c); 331 writeb(0x00, qspi_base + 0x0d); 332 writeb(0x00, qspi_base + 0x0e); 333 334 writew(0xe080, qspi_base + 0x10); 335 336 writeb(0xc0, qspi_base + 0x18); 337 writeb(0x00, qspi_base + 0x18); 338 writeb(0x00, qspi_base + 0x08); 339 writeb(0x48, qspi_base + 0x00); 340 } 341 342 void board_init_f(ulong dummy) 343 { 344 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125); 345 mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721); 346 347 /* 348 * SD0 clock is set to 97.5MHz by default. 349 * Set SD2 to the 97.5MHz as well. 350 */ 351 writel(SD_97500KHZ, SD2CKCR); 352 353 spl_init_sys(); 354 spl_init_pfc(); 355 spl_init_gpio(); 356 spl_init_lbsc(); 357 spl_init_dbsc(); 358 spl_init_qspi(); 359 } 360 361 void spl_board_init(void) 362 { 363 /* UART clocks enabled and gd valid - init serial console */ 364 preloader_console_init(); 365 } 366 367 void board_boot_order(u32 *spl_boot_list) 368 { 369 const u32 jtag_magic = 0x1337c0de; 370 const u32 load_magic = 0xb33fc0de; 371 372 /* 373 * If JTAG probe sets special word at 0xe6300020, then it must 374 * put U-Boot into RAM and SPL will start it from RAM. 375 */ 376 if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) { 377 printf("JTAG boot detected!\n"); 378 379 while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic) 380 ; 381 382 spl_boot_list[0] = BOOT_DEVICE_RAM; 383 spl_boot_list[1] = BOOT_DEVICE_NONE; 384 385 return; 386 } 387 388 /* Boot from SPI NOR with YMODEM UART fallback. */ 389 spl_boot_list[0] = BOOT_DEVICE_SPI; 390 spl_boot_list[1] = BOOT_DEVICE_UART; 391 spl_boot_list[2] = BOOT_DEVICE_NONE; 392 } 393 394 void reset_cpu(ulong addr) 395 { 396 } 397