1 /* 2 * FSL SoC setup code 3 * 4 * Maintained by Kumar Gala (see MAINTAINERS for contact information) 5 * 6 * 2006 (c) MontaVista Software, Inc. 7 * Vitaly Bordug <vbordug@ru.mvista.com> 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the 11 * Free Software Foundation; either version 2 of the License, or (at your 12 * option) any later version. 13 */ 14 15 #include <linux/stddef.h> 16 #include <linux/kernel.h> 17 #include <linux/init.h> 18 #include <linux/errno.h> 19 #include <linux/major.h> 20 #include <linux/delay.h> 21 #include <linux/irq.h> 22 #include <linux/module.h> 23 #include <linux/device.h> 24 #include <linux/platform_device.h> 25 #include <linux/of.h> 26 #include <linux/of_platform.h> 27 #include <linux/phy.h> 28 #include <linux/phy_fixed.h> 29 #include <linux/spi/spi.h> 30 #include <linux/fsl_devices.h> 31 #include <linux/fs_enet_pd.h> 32 #include <linux/fs_uart_pd.h> 33 34 #include <asm/system.h> 35 #include <asm/atomic.h> 36 #include <asm/io.h> 37 #include <asm/irq.h> 38 #include <asm/time.h> 39 #include <asm/prom.h> 40 #include <sysdev/fsl_soc.h> 41 #include <mm/mmu_decl.h> 42 #include <asm/cpm2.h> 43 44 extern void init_fcc_ioports(struct fs_platform_info*); 45 extern void init_fec_ioports(struct fs_platform_info*); 46 extern void init_smc_ioports(struct fs_uart_platform_info*); 47 static phys_addr_t immrbase = -1; 48 49 phys_addr_t get_immrbase(void) 50 { 51 struct device_node *soc; 52 53 if (immrbase != -1) 54 return immrbase; 55 56 soc = of_find_node_by_type(NULL, "soc"); 57 if (soc) { 58 int size; 59 u32 naddr; 60 const u32 *prop = of_get_property(soc, "#address-cells", &size); 61 62 if (prop && size == 4) 63 naddr = *prop; 64 else 65 naddr = 2; 66 67 prop = of_get_property(soc, "ranges", &size); 68 if (prop) 69 immrbase = of_translate_address(soc, prop + naddr); 70 71 of_node_put(soc); 72 } 73 74 return immrbase; 75 } 76 77 EXPORT_SYMBOL(get_immrbase); 78 79 static u32 sysfreq = -1; 80 81 u32 fsl_get_sys_freq(void) 82 { 83 struct device_node *soc; 84 const u32 *prop; 85 int size; 86 87 if (sysfreq != -1) 88 return sysfreq; 89 90 soc = of_find_node_by_type(NULL, "soc"); 91 if (!soc) 92 return -1; 93 94 prop = of_get_property(soc, "clock-frequency", &size); 95 if (!prop || size != sizeof(*prop) || *prop == 0) 96 prop = of_get_property(soc, "bus-frequency", &size); 97 98 if (prop && size == sizeof(*prop)) 99 sysfreq = *prop; 100 101 of_node_put(soc); 102 return sysfreq; 103 } 104 EXPORT_SYMBOL(fsl_get_sys_freq); 105 106 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx) 107 108 static u32 brgfreq = -1; 109 110 u32 get_brgfreq(void) 111 { 112 struct device_node *node; 113 const unsigned int *prop; 114 int size; 115 116 if (brgfreq != -1) 117 return brgfreq; 118 119 node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); 120 if (node) { 121 prop = of_get_property(node, "clock-frequency", &size); 122 if (prop && size == 4) 123 brgfreq = *prop; 124 125 of_node_put(node); 126 return brgfreq; 127 } 128 129 /* Legacy device binding -- will go away when no users are left. */ 130 node = of_find_node_by_type(NULL, "cpm"); 131 if (!node) 132 node = of_find_compatible_node(NULL, NULL, "fsl,qe"); 133 if (!node) 134 node = of_find_node_by_type(NULL, "qe"); 135 136 if (node) { 137 prop = of_get_property(node, "brg-frequency", &size); 138 if (prop && size == 4) 139 brgfreq = *prop; 140 141 if (brgfreq == -1 || brgfreq == 0) { 142 prop = of_get_property(node, "bus-frequency", &size); 143 if (prop && size == 4) 144 brgfreq = *prop / 2; 145 } 146 of_node_put(node); 147 } 148 149 return brgfreq; 150 } 151 152 EXPORT_SYMBOL(get_brgfreq); 153 154 static u32 fs_baudrate = -1; 155 156 u32 get_baudrate(void) 157 { 158 struct device_node *node; 159 160 if (fs_baudrate != -1) 161 return fs_baudrate; 162 163 node = of_find_node_by_type(NULL, "serial"); 164 if (node) { 165 int size; 166 const unsigned int *prop = of_get_property(node, 167 "current-speed", &size); 168 169 if (prop) 170 fs_baudrate = *prop; 171 of_node_put(node); 172 } 173 174 return fs_baudrate; 175 } 176 177 EXPORT_SYMBOL(get_baudrate); 178 #endif /* CONFIG_CPM2 */ 179 180 #ifdef CONFIG_FIXED_PHY 181 static int __init of_add_fixed_phys(void) 182 { 183 int ret; 184 struct device_node *np; 185 u32 *fixed_link; 186 struct fixed_phy_status status = {}; 187 188 for_each_node_by_name(np, "ethernet") { 189 fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL); 190 if (!fixed_link) 191 continue; 192 193 status.link = 1; 194 status.duplex = fixed_link[1]; 195 status.speed = fixed_link[2]; 196 status.pause = fixed_link[3]; 197 status.asym_pause = fixed_link[4]; 198 199 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status); 200 if (ret) { 201 of_node_put(np); 202 return ret; 203 } 204 } 205 206 return 0; 207 } 208 arch_initcall(of_add_fixed_phys); 209 #endif /* CONFIG_FIXED_PHY */ 210 211 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) 212 { 213 if (!phy_type) 214 return FSL_USB2_PHY_NONE; 215 if (!strcasecmp(phy_type, "ulpi")) 216 return FSL_USB2_PHY_ULPI; 217 if (!strcasecmp(phy_type, "utmi")) 218 return FSL_USB2_PHY_UTMI; 219 if (!strcasecmp(phy_type, "utmi_wide")) 220 return FSL_USB2_PHY_UTMI_WIDE; 221 if (!strcasecmp(phy_type, "serial")) 222 return FSL_USB2_PHY_SERIAL; 223 224 return FSL_USB2_PHY_NONE; 225 } 226 227 static int __init fsl_usb_of_init(void) 228 { 229 struct device_node *np; 230 unsigned int i = 0; 231 struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL, 232 *usb_dev_dr_client = NULL; 233 int ret; 234 235 for_each_compatible_node(np, NULL, "fsl-usb2-mph") { 236 struct resource r[2]; 237 struct fsl_usb2_platform_data usb_data; 238 const unsigned char *prop = NULL; 239 240 memset(&r, 0, sizeof(r)); 241 memset(&usb_data, 0, sizeof(usb_data)); 242 243 ret = of_address_to_resource(np, 0, &r[0]); 244 if (ret) 245 goto err; 246 247 of_irq_to_resource(np, 0, &r[1]); 248 249 usb_dev_mph = 250 platform_device_register_simple("fsl-ehci", i, r, 2); 251 if (IS_ERR(usb_dev_mph)) { 252 ret = PTR_ERR(usb_dev_mph); 253 goto err; 254 } 255 256 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL; 257 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask; 258 259 usb_data.operating_mode = FSL_USB2_MPH_HOST; 260 261 prop = of_get_property(np, "port0", NULL); 262 if (prop) 263 usb_data.port_enables |= FSL_USB2_PORT0_ENABLED; 264 265 prop = of_get_property(np, "port1", NULL); 266 if (prop) 267 usb_data.port_enables |= FSL_USB2_PORT1_ENABLED; 268 269 prop = of_get_property(np, "phy_type", NULL); 270 usb_data.phy_mode = determine_usb_phy(prop); 271 272 ret = 273 platform_device_add_data(usb_dev_mph, &usb_data, 274 sizeof(struct 275 fsl_usb2_platform_data)); 276 if (ret) 277 goto unreg_mph; 278 i++; 279 } 280 281 for_each_compatible_node(np, NULL, "fsl-usb2-dr") { 282 struct resource r[2]; 283 struct fsl_usb2_platform_data usb_data; 284 const unsigned char *prop = NULL; 285 286 if (!of_device_is_available(np)) 287 continue; 288 289 memset(&r, 0, sizeof(r)); 290 memset(&usb_data, 0, sizeof(usb_data)); 291 292 ret = of_address_to_resource(np, 0, &r[0]); 293 if (ret) 294 goto unreg_mph; 295 296 of_irq_to_resource(np, 0, &r[1]); 297 298 prop = of_get_property(np, "dr_mode", NULL); 299 300 if (!prop || !strcmp(prop, "host")) { 301 usb_data.operating_mode = FSL_USB2_DR_HOST; 302 usb_dev_dr_host = platform_device_register_simple( 303 "fsl-ehci", i, r, 2); 304 if (IS_ERR(usb_dev_dr_host)) { 305 ret = PTR_ERR(usb_dev_dr_host); 306 goto err; 307 } 308 } else if (prop && !strcmp(prop, "peripheral")) { 309 usb_data.operating_mode = FSL_USB2_DR_DEVICE; 310 usb_dev_dr_client = platform_device_register_simple( 311 "fsl-usb2-udc", i, r, 2); 312 if (IS_ERR(usb_dev_dr_client)) { 313 ret = PTR_ERR(usb_dev_dr_client); 314 goto err; 315 } 316 } else if (prop && !strcmp(prop, "otg")) { 317 usb_data.operating_mode = FSL_USB2_DR_OTG; 318 usb_dev_dr_host = platform_device_register_simple( 319 "fsl-ehci", i, r, 2); 320 if (IS_ERR(usb_dev_dr_host)) { 321 ret = PTR_ERR(usb_dev_dr_host); 322 goto err; 323 } 324 usb_dev_dr_client = platform_device_register_simple( 325 "fsl-usb2-udc", i, r, 2); 326 if (IS_ERR(usb_dev_dr_client)) { 327 ret = PTR_ERR(usb_dev_dr_client); 328 goto err; 329 } 330 } else { 331 ret = -EINVAL; 332 goto err; 333 } 334 335 prop = of_get_property(np, "phy_type", NULL); 336 usb_data.phy_mode = determine_usb_phy(prop); 337 338 if (usb_dev_dr_host) { 339 usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL; 340 usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host-> 341 dev.coherent_dma_mask; 342 if ((ret = platform_device_add_data(usb_dev_dr_host, 343 &usb_data, sizeof(struct 344 fsl_usb2_platform_data)))) 345 goto unreg_dr; 346 } 347 if (usb_dev_dr_client) { 348 usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL; 349 usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client-> 350 dev.coherent_dma_mask; 351 if ((ret = platform_device_add_data(usb_dev_dr_client, 352 &usb_data, sizeof(struct 353 fsl_usb2_platform_data)))) 354 goto unreg_dr; 355 } 356 i++; 357 } 358 return 0; 359 360 unreg_dr: 361 if (usb_dev_dr_host) 362 platform_device_unregister(usb_dev_dr_host); 363 if (usb_dev_dr_client) 364 platform_device_unregister(usb_dev_dr_client); 365 unreg_mph: 366 if (usb_dev_mph) 367 platform_device_unregister(usb_dev_mph); 368 err: 369 return ret; 370 } 371 372 arch_initcall(fsl_usb_of_init); 373 374 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx) 375 static __be32 __iomem *rstcr; 376 377 static int __init setup_rstcr(void) 378 { 379 struct device_node *np; 380 np = of_find_node_by_name(NULL, "global-utilities"); 381 if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) { 382 const u32 *prop = of_get_property(np, "reg", NULL); 383 if (prop) { 384 /* map reset control register 385 * 0xE00B0 is offset of reset control register 386 */ 387 rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff); 388 if (!rstcr) 389 printk (KERN_EMERG "Error: reset control " 390 "register not mapped!\n"); 391 } 392 } else 393 printk (KERN_INFO "rstcr compatible register does not exist!\n"); 394 if (np) 395 of_node_put(np); 396 return 0; 397 } 398 399 arch_initcall(setup_rstcr); 400 401 void fsl_rstcr_restart(char *cmd) 402 { 403 local_irq_disable(); 404 if (rstcr) 405 /* set reset control register */ 406 out_be32(rstcr, 0x2); /* HRESET_REQ */ 407 408 while (1) ; 409 } 410 #endif 411 412 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) 413 struct platform_diu_data_ops diu_ops; 414 EXPORT_SYMBOL(diu_ops); 415 #endif 416