1 /* 2 * Copyright (C) 2006-2010, 2012 Freescale Semiconductor, Inc. 3 * All rights reserved. 4 * 5 * Author: Andy Fleming <afleming@freescale.com> 6 * 7 * Based on 83xx/mpc8360e_pb.c by: 8 * Li Yang <LeoLi@freescale.com> 9 * Yin Olivia <Hong-hua.Yin@freescale.com> 10 * 11 * Description: 12 * MPC85xx MDS board specific routines. 13 * 14 * This program is free software; you can redistribute it and/or modify it 15 * under the terms of the GNU General Public License as published by the 16 * Free Software Foundation; either version 2 of the License, or (at your 17 * option) any later version. 18 */ 19 20 #include <linux/stddef.h> 21 #include <linux/kernel.h> 22 #include <linux/init.h> 23 #include <linux/errno.h> 24 #include <linux/reboot.h> 25 #include <linux/pci.h> 26 #include <linux/kdev_t.h> 27 #include <linux/major.h> 28 #include <linux/console.h> 29 #include <linux/delay.h> 30 #include <linux/seq_file.h> 31 #include <linux/initrd.h> 32 #include <linux/fsl_devices.h> 33 #include <linux/of_platform.h> 34 #include <linux/of_device.h> 35 #include <linux/phy.h> 36 #include <linux/memblock.h> 37 38 #include <linux/atomic.h> 39 #include <asm/time.h> 40 #include <asm/io.h> 41 #include <asm/machdep.h> 42 #include <asm/pci-bridge.h> 43 #include <asm/irq.h> 44 #include <mm/mmu_decl.h> 45 #include <asm/prom.h> 46 #include <asm/udbg.h> 47 #include <sysdev/fsl_soc.h> 48 #include <sysdev/fsl_pci.h> 49 #include <sysdev/simple_gpio.h> 50 #include <asm/qe.h> 51 #include <asm/qe_ic.h> 52 #include <asm/mpic.h> 53 #include <asm/swiotlb.h> 54 #include <asm/fsl_guts.h> 55 #include "smp.h" 56 57 #include "mpc85xx.h" 58 59 #undef DEBUG 60 #ifdef DEBUG 61 #define DBG(fmt...) udbg_printf(fmt) 62 #else 63 #define DBG(fmt...) 64 #endif 65 66 #define MV88E1111_SCR 0x10 67 #define MV88E1111_SCR_125CLK 0x0010 68 static int mpc8568_fixup_125_clock(struct phy_device *phydev) 69 { 70 int scr; 71 int err; 72 73 /* Workaround for the 125 CLK Toggle */ 74 scr = phy_read(phydev, MV88E1111_SCR); 75 76 if (scr < 0) 77 return scr; 78 79 err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK)); 80 81 if (err) 82 return err; 83 84 err = phy_write(phydev, MII_BMCR, BMCR_RESET); 85 86 if (err) 87 return err; 88 89 scr = phy_read(phydev, MV88E1111_SCR); 90 91 if (scr < 0) 92 return scr; 93 94 err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008); 95 96 return err; 97 } 98 99 static int mpc8568_mds_phy_fixups(struct phy_device *phydev) 100 { 101 int temp; 102 int err; 103 104 /* Errata */ 105 err = phy_write(phydev,29, 0x0006); 106 107 if (err) 108 return err; 109 110 temp = phy_read(phydev, 30); 111 112 if (temp < 0) 113 return temp; 114 115 temp = (temp & (~0x8000)) | 0x4000; 116 err = phy_write(phydev,30, temp); 117 118 if (err) 119 return err; 120 121 err = phy_write(phydev,29, 0x000a); 122 123 if (err) 124 return err; 125 126 temp = phy_read(phydev, 30); 127 128 if (temp < 0) 129 return temp; 130 131 temp = phy_read(phydev, 30); 132 133 if (temp < 0) 134 return temp; 135 136 temp &= ~0x0020; 137 138 err = phy_write(phydev,30,temp); 139 140 if (err) 141 return err; 142 143 /* Disable automatic MDI/MDIX selection */ 144 temp = phy_read(phydev, 16); 145 146 if (temp < 0) 147 return temp; 148 149 temp &= ~0x0060; 150 err = phy_write(phydev,16,temp); 151 152 return err; 153 } 154 155 /* ************************************************************************ 156 * 157 * Setup the architecture 158 * 159 */ 160 #ifdef CONFIG_QUICC_ENGINE 161 static void __init mpc85xx_mds_reset_ucc_phys(void) 162 { 163 struct device_node *np; 164 static u8 __iomem *bcsr_regs; 165 166 /* Map BCSR area */ 167 np = of_find_node_by_name(NULL, "bcsr"); 168 if (!np) 169 return; 170 171 bcsr_regs = of_iomap(np, 0); 172 of_node_put(np); 173 if (!bcsr_regs) 174 return; 175 176 if (machine_is(mpc8568_mds)) { 177 #define BCSR_UCC1_GETH_EN (0x1 << 7) 178 #define BCSR_UCC2_GETH_EN (0x1 << 7) 179 #define BCSR_UCC1_MODE_MSK (0x3 << 4) 180 #define BCSR_UCC2_MODE_MSK (0x3 << 0) 181 182 /* Turn off UCC1 & UCC2 */ 183 clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); 184 clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); 185 186 /* Mode is RGMII, all bits clear */ 187 clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK | 188 BCSR_UCC2_MODE_MSK); 189 190 /* Turn UCC1 & UCC2 on */ 191 setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); 192 setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); 193 } else if (machine_is(mpc8569_mds)) { 194 #define BCSR7_UCC12_GETHnRST (0x1 << 2) 195 #define BCSR8_UEM_MARVELL_RST (0x1 << 1) 196 #define BCSR_UCC_RGMII (0x1 << 6) 197 #define BCSR_UCC_RTBI (0x1 << 5) 198 /* 199 * U-Boot mangles interrupt polarity for Marvell PHYs, 200 * so reset built-in and UEM Marvell PHYs, this puts 201 * the PHYs into their normal state. 202 */ 203 clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); 204 setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); 205 206 setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); 207 clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); 208 209 for (np = NULL; (np = of_find_compatible_node(np, 210 "network", 211 "ucc_geth")) != NULL;) { 212 const unsigned int *prop; 213 int ucc_num; 214 215 prop = of_get_property(np, "cell-index", NULL); 216 if (prop == NULL) 217 continue; 218 219 ucc_num = *prop - 1; 220 221 prop = of_get_property(np, "phy-connection-type", NULL); 222 if (prop == NULL) 223 continue; 224 225 if (strcmp("rtbi", (const char *)prop) == 0) 226 clrsetbits_8(&bcsr_regs[7 + ucc_num], 227 BCSR_UCC_RGMII, BCSR_UCC_RTBI); 228 } 229 } else if (machine_is(p1021_mds)) { 230 #define BCSR11_ENET_MICRST (0x1 << 5) 231 /* Reset Micrel PHY */ 232 clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); 233 setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); 234 } 235 236 iounmap(bcsr_regs); 237 } 238 239 static void __init mpc85xx_mds_qe_init(void) 240 { 241 struct device_node *np; 242 243 np = of_find_compatible_node(NULL, NULL, "fsl,qe"); 244 if (!np) { 245 np = of_find_node_by_name(NULL, "qe"); 246 if (!np) 247 return; 248 } 249 250 if (!of_device_is_available(np)) { 251 of_node_put(np); 252 return; 253 } 254 255 qe_reset(); 256 of_node_put(np); 257 258 np = of_find_node_by_name(NULL, "par_io"); 259 if (np) { 260 struct device_node *ucc; 261 262 par_io_init(np); 263 of_node_put(np); 264 265 for_each_node_by_name(ucc, "ucc") 266 par_io_of_config(ucc); 267 } 268 269 mpc85xx_mds_reset_ucc_phys(); 270 271 if (machine_is(p1021_mds)) { 272 273 struct ccsr_guts __iomem *guts; 274 275 np = of_find_node_by_name(NULL, "global-utilities"); 276 if (np) { 277 guts = of_iomap(np, 0); 278 if (!guts) 279 pr_err("mpc85xx-rdb: could not map global utilities register\n"); 280 else{ 281 /* P1021 has pins muxed for QE and other functions. To 282 * enable QE UEC mode, we need to set bit QE0 for UCC1 283 * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9 284 * and QE12 for QE MII management signals in PMUXCR 285 * register. 286 */ 287 setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) | 288 MPC85xx_PMUXCR_QE(3) | 289 MPC85xx_PMUXCR_QE(9) | 290 MPC85xx_PMUXCR_QE(12)); 291 iounmap(guts); 292 } 293 of_node_put(np); 294 } 295 296 } 297 } 298 299 static void __init mpc85xx_mds_qeic_init(void) 300 { 301 struct device_node *np; 302 303 np = of_find_compatible_node(NULL, NULL, "fsl,qe"); 304 if (!of_device_is_available(np)) { 305 of_node_put(np); 306 return; 307 } 308 309 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); 310 if (!np) { 311 np = of_find_node_by_type(NULL, "qeic"); 312 if (!np) 313 return; 314 } 315 316 if (machine_is(p1021_mds)) 317 qe_ic_init(np, 0, qe_ic_cascade_low_mpic, 318 qe_ic_cascade_high_mpic); 319 else 320 qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL); 321 of_node_put(np); 322 } 323 #else 324 static void __init mpc85xx_mds_qe_init(void) { } 325 static void __init mpc85xx_mds_qeic_init(void) { } 326 #endif /* CONFIG_QUICC_ENGINE */ 327 328 static void __init mpc85xx_mds_setup_arch(void) 329 { 330 if (ppc_md.progress) 331 ppc_md.progress("mpc85xx_mds_setup_arch()", 0); 332 333 mpc85xx_smp_init(); 334 335 mpc85xx_mds_qe_init(); 336 337 fsl_pci_assign_primary(); 338 339 swiotlb_detect_4g(); 340 } 341 342 343 static int __init board_fixups(void) 344 { 345 char phy_id[20]; 346 char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"}; 347 struct device_node *mdio; 348 struct resource res; 349 int i; 350 351 for (i = 0; i < ARRAY_SIZE(compstrs); i++) { 352 mdio = of_find_compatible_node(NULL, NULL, compstrs[i]); 353 354 of_address_to_resource(mdio, 0, &res); 355 snprintf(phy_id, sizeof(phy_id), "%llx:%02x", 356 (unsigned long long)res.start, 1); 357 358 phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock); 359 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); 360 361 /* Register a workaround for errata */ 362 snprintf(phy_id, sizeof(phy_id), "%llx:%02x", 363 (unsigned long long)res.start, 7); 364 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); 365 366 of_node_put(mdio); 367 } 368 369 return 0; 370 } 371 machine_arch_initcall(mpc8568_mds, board_fixups); 372 machine_arch_initcall(mpc8569_mds, board_fixups); 373 374 static int __init mpc85xx_publish_devices(void) 375 { 376 if (machine_is(mpc8568_mds)) 377 simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio"); 378 if (machine_is(mpc8569_mds)) 379 simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio"); 380 381 return mpc85xx_common_publish_devices(); 382 } 383 384 machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices); 385 machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices); 386 machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices); 387 388 machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier); 389 machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier); 390 machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier); 391 392 static void __init mpc85xx_mds_pic_init(void) 393 { 394 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | 395 MPIC_SINGLE_DEST_CPU, 396 0, 256, " OpenPIC "); 397 BUG_ON(mpic == NULL); 398 399 mpic_init(mpic); 400 mpc85xx_mds_qeic_init(); 401 } 402 403 static int __init mpc85xx_mds_probe(void) 404 { 405 unsigned long root = of_get_flat_dt_root(); 406 407 return of_flat_dt_is_compatible(root, "MPC85xxMDS"); 408 } 409 410 define_machine(mpc8568_mds) { 411 .name = "MPC8568 MDS", 412 .probe = mpc85xx_mds_probe, 413 .setup_arch = mpc85xx_mds_setup_arch, 414 .init_IRQ = mpc85xx_mds_pic_init, 415 .get_irq = mpic_get_irq, 416 .restart = fsl_rstcr_restart, 417 .calibrate_decr = generic_calibrate_decr, 418 .progress = udbg_progress, 419 #ifdef CONFIG_PCI 420 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 421 #endif 422 }; 423 424 static int __init mpc8569_mds_probe(void) 425 { 426 unsigned long root = of_get_flat_dt_root(); 427 428 return of_flat_dt_is_compatible(root, "fsl,MPC8569EMDS"); 429 } 430 431 define_machine(mpc8569_mds) { 432 .name = "MPC8569 MDS", 433 .probe = mpc8569_mds_probe, 434 .setup_arch = mpc85xx_mds_setup_arch, 435 .init_IRQ = mpc85xx_mds_pic_init, 436 .get_irq = mpic_get_irq, 437 .restart = fsl_rstcr_restart, 438 .calibrate_decr = generic_calibrate_decr, 439 .progress = udbg_progress, 440 #ifdef CONFIG_PCI 441 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 442 #endif 443 }; 444 445 static int __init p1021_mds_probe(void) 446 { 447 unsigned long root = of_get_flat_dt_root(); 448 449 return of_flat_dt_is_compatible(root, "fsl,P1021MDS"); 450 451 } 452 453 define_machine(p1021_mds) { 454 .name = "P1021 MDS", 455 .probe = p1021_mds_probe, 456 .setup_arch = mpc85xx_mds_setup_arch, 457 .init_IRQ = mpc85xx_mds_pic_init, 458 .get_irq = mpic_get_irq, 459 .restart = fsl_rstcr_restart, 460 .calibrate_decr = generic_calibrate_decr, 461 .progress = udbg_progress, 462 #ifdef CONFIG_PCI 463 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 464 #endif 465 }; 466 467