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 <asm/machdep.h> 41 #include <sysdev/fsl_soc.h> 42 #include <mm/mmu_decl.h> 43 #include <asm/cpm2.h> 44 45 extern void init_fcc_ioports(struct fs_platform_info*); 46 extern void init_fec_ioports(struct fs_platform_info*); 47 extern void init_smc_ioports(struct fs_uart_platform_info*); 48 static phys_addr_t immrbase = -1; 49 50 phys_addr_t get_immrbase(void) 51 { 52 struct device_node *soc; 53 54 if (immrbase != -1) 55 return immrbase; 56 57 soc = of_find_node_by_type(NULL, "soc"); 58 if (soc) { 59 int size; 60 u32 naddr; 61 const u32 *prop = of_get_property(soc, "#address-cells", &size); 62 63 if (prop && size == 4) 64 naddr = *prop; 65 else 66 naddr = 2; 67 68 prop = of_get_property(soc, "ranges", &size); 69 if (prop) 70 immrbase = of_translate_address(soc, prop + naddr); 71 72 of_node_put(soc); 73 } 74 75 return immrbase; 76 } 77 78 EXPORT_SYMBOL(get_immrbase); 79 80 static u32 sysfreq = -1; 81 82 u32 fsl_get_sys_freq(void) 83 { 84 struct device_node *soc; 85 const u32 *prop; 86 int size; 87 88 if (sysfreq != -1) 89 return sysfreq; 90 91 soc = of_find_node_by_type(NULL, "soc"); 92 if (!soc) 93 return -1; 94 95 prop = of_get_property(soc, "clock-frequency", &size); 96 if (!prop || size != sizeof(*prop) || *prop == 0) 97 prop = of_get_property(soc, "bus-frequency", &size); 98 99 if (prop && size == sizeof(*prop)) 100 sysfreq = *prop; 101 102 of_node_put(soc); 103 return sysfreq; 104 } 105 EXPORT_SYMBOL(fsl_get_sys_freq); 106 107 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx) 108 109 static u32 brgfreq = -1; 110 111 u32 get_brgfreq(void) 112 { 113 struct device_node *node; 114 const unsigned int *prop; 115 int size; 116 117 if (brgfreq != -1) 118 return brgfreq; 119 120 node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); 121 if (node) { 122 prop = of_get_property(node, "clock-frequency", &size); 123 if (prop && size == 4) 124 brgfreq = *prop; 125 126 of_node_put(node); 127 return brgfreq; 128 } 129 130 /* Legacy device binding -- will go away when no users are left. */ 131 node = of_find_node_by_type(NULL, "cpm"); 132 if (!node) 133 node = of_find_compatible_node(NULL, NULL, "fsl,qe"); 134 if (!node) 135 node = of_find_node_by_type(NULL, "qe"); 136 137 if (node) { 138 prop = of_get_property(node, "brg-frequency", &size); 139 if (prop && size == 4) 140 brgfreq = *prop; 141 142 if (brgfreq == -1 || brgfreq == 0) { 143 prop = of_get_property(node, "bus-frequency", &size); 144 if (prop && size == 4) 145 brgfreq = *prop / 2; 146 } 147 of_node_put(node); 148 } 149 150 return brgfreq; 151 } 152 153 EXPORT_SYMBOL(get_brgfreq); 154 155 static u32 fs_baudrate = -1; 156 157 u32 get_baudrate(void) 158 { 159 struct device_node *node; 160 161 if (fs_baudrate != -1) 162 return fs_baudrate; 163 164 node = of_find_node_by_type(NULL, "serial"); 165 if (node) { 166 int size; 167 const unsigned int *prop = of_get_property(node, 168 "current-speed", &size); 169 170 if (prop) 171 fs_baudrate = *prop; 172 of_node_put(node); 173 } 174 175 return fs_baudrate; 176 } 177 178 EXPORT_SYMBOL(get_baudrate); 179 #endif /* CONFIG_CPM2 */ 180 181 #ifdef CONFIG_FIXED_PHY 182 static int __init of_add_fixed_phys(void) 183 { 184 int ret; 185 struct device_node *np; 186 u32 *fixed_link; 187 struct fixed_phy_status status = {}; 188 189 for_each_node_by_name(np, "ethernet") { 190 fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL); 191 if (!fixed_link) 192 continue; 193 194 status.link = 1; 195 status.duplex = fixed_link[1]; 196 status.speed = fixed_link[2]; 197 status.pause = fixed_link[3]; 198 status.asym_pause = fixed_link[4]; 199 200 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status); 201 if (ret) { 202 of_node_put(np); 203 return ret; 204 } 205 } 206 207 return 0; 208 } 209 arch_initcall(of_add_fixed_phys); 210 #endif /* CONFIG_FIXED_PHY */ 211 212 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) 213 { 214 if (!phy_type) 215 return FSL_USB2_PHY_NONE; 216 if (!strcasecmp(phy_type, "ulpi")) 217 return FSL_USB2_PHY_ULPI; 218 if (!strcasecmp(phy_type, "utmi")) 219 return FSL_USB2_PHY_UTMI; 220 if (!strcasecmp(phy_type, "utmi_wide")) 221 return FSL_USB2_PHY_UTMI_WIDE; 222 if (!strcasecmp(phy_type, "serial")) 223 return FSL_USB2_PHY_SERIAL; 224 225 return FSL_USB2_PHY_NONE; 226 } 227 228 static int __init fsl_usb_of_init(void) 229 { 230 struct device_node *np; 231 unsigned int i = 0; 232 struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL, 233 *usb_dev_dr_client = NULL; 234 int ret; 235 236 for_each_compatible_node(np, NULL, "fsl-usb2-mph") { 237 struct resource r[2]; 238 struct fsl_usb2_platform_data usb_data; 239 const unsigned char *prop = NULL; 240 241 memset(&r, 0, sizeof(r)); 242 memset(&usb_data, 0, sizeof(usb_data)); 243 244 ret = of_address_to_resource(np, 0, &r[0]); 245 if (ret) 246 goto err; 247 248 of_irq_to_resource(np, 0, &r[1]); 249 250 usb_dev_mph = 251 platform_device_register_simple("fsl-ehci", i, r, 2); 252 if (IS_ERR(usb_dev_mph)) { 253 ret = PTR_ERR(usb_dev_mph); 254 goto err; 255 } 256 257 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL; 258 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask; 259 260 usb_data.operating_mode = FSL_USB2_MPH_HOST; 261 262 prop = of_get_property(np, "port0", NULL); 263 if (prop) 264 usb_data.port_enables |= FSL_USB2_PORT0_ENABLED; 265 266 prop = of_get_property(np, "port1", NULL); 267 if (prop) 268 usb_data.port_enables |= FSL_USB2_PORT1_ENABLED; 269 270 prop = of_get_property(np, "phy_type", NULL); 271 usb_data.phy_mode = determine_usb_phy(prop); 272 273 ret = 274 platform_device_add_data(usb_dev_mph, &usb_data, 275 sizeof(struct 276 fsl_usb2_platform_data)); 277 if (ret) 278 goto unreg_mph; 279 i++; 280 } 281 282 for_each_compatible_node(np, NULL, "fsl-usb2-dr") { 283 struct resource r[2]; 284 struct fsl_usb2_platform_data usb_data; 285 const unsigned char *prop = NULL; 286 287 if (!of_device_is_available(np)) 288 continue; 289 290 memset(&r, 0, sizeof(r)); 291 memset(&usb_data, 0, sizeof(usb_data)); 292 293 ret = of_address_to_resource(np, 0, &r[0]); 294 if (ret) 295 goto unreg_mph; 296 297 of_irq_to_resource(np, 0, &r[1]); 298 299 prop = of_get_property(np, "dr_mode", NULL); 300 301 if (!prop || !strcmp(prop, "host")) { 302 usb_data.operating_mode = FSL_USB2_DR_HOST; 303 usb_dev_dr_host = platform_device_register_simple( 304 "fsl-ehci", i, r, 2); 305 if (IS_ERR(usb_dev_dr_host)) { 306 ret = PTR_ERR(usb_dev_dr_host); 307 goto err; 308 } 309 } else if (prop && !strcmp(prop, "peripheral")) { 310 usb_data.operating_mode = FSL_USB2_DR_DEVICE; 311 usb_dev_dr_client = platform_device_register_simple( 312 "fsl-usb2-udc", i, r, 2); 313 if (IS_ERR(usb_dev_dr_client)) { 314 ret = PTR_ERR(usb_dev_dr_client); 315 goto err; 316 } 317 } else if (prop && !strcmp(prop, "otg")) { 318 usb_data.operating_mode = FSL_USB2_DR_OTG; 319 usb_dev_dr_host = platform_device_register_simple( 320 "fsl-ehci", i, r, 2); 321 if (IS_ERR(usb_dev_dr_host)) { 322 ret = PTR_ERR(usb_dev_dr_host); 323 goto err; 324 } 325 usb_dev_dr_client = platform_device_register_simple( 326 "fsl-usb2-udc", i, r, 2); 327 if (IS_ERR(usb_dev_dr_client)) { 328 ret = PTR_ERR(usb_dev_dr_client); 329 goto err; 330 } 331 } else { 332 ret = -EINVAL; 333 goto err; 334 } 335 336 prop = of_get_property(np, "phy_type", NULL); 337 usb_data.phy_mode = determine_usb_phy(prop); 338 339 if (usb_dev_dr_host) { 340 usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL; 341 usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host-> 342 dev.coherent_dma_mask; 343 if ((ret = platform_device_add_data(usb_dev_dr_host, 344 &usb_data, sizeof(struct 345 fsl_usb2_platform_data)))) 346 goto unreg_dr; 347 } 348 if (usb_dev_dr_client) { 349 usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL; 350 usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client-> 351 dev.coherent_dma_mask; 352 if ((ret = platform_device_add_data(usb_dev_dr_client, 353 &usb_data, sizeof(struct 354 fsl_usb2_platform_data)))) 355 goto unreg_dr; 356 } 357 i++; 358 } 359 return 0; 360 361 unreg_dr: 362 if (usb_dev_dr_host) 363 platform_device_unregister(usb_dev_dr_host); 364 if (usb_dev_dr_client) 365 platform_device_unregister(usb_dev_dr_client); 366 unreg_mph: 367 if (usb_dev_mph) 368 platform_device_unregister(usb_dev_mph); 369 err: 370 return ret; 371 } 372 373 arch_initcall(fsl_usb_of_init); 374 375 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) 376 static __be32 __iomem *rstcr; 377 378 static int __init setup_rstcr(void) 379 { 380 struct device_node *np; 381 np = of_find_node_by_name(NULL, "global-utilities"); 382 if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) { 383 rstcr = of_iomap(np, 0) + 0xb0; 384 if (!rstcr) 385 printk (KERN_EMERG "Error: reset control register " 386 "not mapped!\n"); 387 } else if (ppc_md.restart == fsl_rstcr_restart) 388 printk(KERN_ERR "No RSTCR register, warm reboot won't work\n"); 389 390 if (np) 391 of_node_put(np); 392 return 0; 393 } 394 395 arch_initcall(setup_rstcr); 396 397 void fsl_rstcr_restart(char *cmd) 398 { 399 local_irq_disable(); 400 if (rstcr) 401 /* set reset control register */ 402 out_be32(rstcr, 0x2); /* HRESET_REQ */ 403 404 while (1) ; 405 } 406 #endif 407 408 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) 409 struct platform_diu_data_ops diu_ops; 410 EXPORT_SYMBOL(diu_ops); 411 #endif 412