1/* 2 * Copyright (C) 2000, 2001, 2002 Broadcom Corporation 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 */ 18 19/* 20 * 21 * Broadcom Common Firmware Environment (CFE) 22 * 23 * This module contains device function stubs (small routines to 24 * call the standard "iocb" interface entry point to CFE). 25 * There should be one routine here per iocb function call. 26 * 27 * Authors: Mitch Lichtenberg, Chris Demetriou 28 */ 29 30#include <asm/fw/cfe/cfe_api.h> 31#include "cfe_api_int.h" 32 33/* Cast from a native pointer to a cfe_xptr_t and back. */ 34#define XPTR_FROM_NATIVE(n) ((cfe_xptr_t) (intptr_t) (n)) 35#define NATIVE_FROM_XPTR(x) ((void *) (intptr_t) (x)) 36 37int cfe_iocb_dispatch(struct cfe_xiocb *xiocb); 38 39/* 40 * Declare the dispatch function with args of "intptr_t". 41 * This makes sure whatever model we're compiling in 42 * puts the pointers in a single register. For example, 43 * combining -mlong64 and -mips1 or -mips2 would lead to 44 * trouble, since the handle and IOCB pointer will be 45 * passed in two registers each, and CFE expects one. 46 */ 47 48static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb); 49static u64 cfe_handle; 50 51int cfe_init(u64 handle, u64 ept) 52{ 53 cfe_dispfunc = NATIVE_FROM_XPTR(ept); 54 cfe_handle = handle; 55 return 0; 56} 57 58int cfe_iocb_dispatch(struct cfe_xiocb * xiocb) 59{ 60 if (!cfe_dispfunc) 61 return -1; 62 return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb); 63} 64 65int cfe_close(int handle) 66{ 67 struct cfe_xiocb xiocb; 68 69 xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE; 70 xiocb.xiocb_status = 0; 71 xiocb.xiocb_handle = handle; 72 xiocb.xiocb_flags = 0; 73 xiocb.xiocb_psize = 0; 74 75 cfe_iocb_dispatch(&xiocb); 76 77 return xiocb.xiocb_status; 78 79} 80 81int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1) 82{ 83 struct cfe_xiocb xiocb; 84 85 xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL; 86 xiocb.xiocb_status = 0; 87 xiocb.xiocb_handle = 0; 88 xiocb.xiocb_flags = 0; 89 xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl); 90 xiocb.plist.xiocb_cpuctl.cpu_number = cpu; 91 xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START; 92 xiocb.plist.xiocb_cpuctl.gp_val = gp; 93 xiocb.plist.xiocb_cpuctl.sp_val = sp; 94 xiocb.plist.xiocb_cpuctl.a1_val = a1; 95 xiocb.plist.xiocb_cpuctl.start_addr = (long) fn; 96 97 cfe_iocb_dispatch(&xiocb); 98 99 return xiocb.xiocb_status; 100} 101 102int cfe_cpu_stop(int cpu) 103{ 104 struct cfe_xiocb xiocb; 105 106 xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL; 107 xiocb.xiocb_status = 0; 108 xiocb.xiocb_handle = 0; 109 xiocb.xiocb_flags = 0; 110 xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl); 111 xiocb.plist.xiocb_cpuctl.cpu_number = cpu; 112 xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP; 113 114 cfe_iocb_dispatch(&xiocb); 115 116 return xiocb.xiocb_status; 117} 118 119int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen) 120{ 121 struct cfe_xiocb xiocb; 122 123 xiocb.xiocb_fcode = CFE_CMD_ENV_SET; 124 xiocb.xiocb_status = 0; 125 xiocb.xiocb_handle = 0; 126 xiocb.xiocb_flags = 0; 127 xiocb.xiocb_psize = sizeof(struct xiocb_envbuf); 128 xiocb.plist.xiocb_envbuf.enum_idx = idx; 129 xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name); 130 xiocb.plist.xiocb_envbuf.name_length = namelen; 131 xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val); 132 xiocb.plist.xiocb_envbuf.val_length = vallen; 133 134 cfe_iocb_dispatch(&xiocb); 135 136 return xiocb.xiocb_status; 137} 138 139int 140cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type) 141{ 142 struct cfe_xiocb xiocb; 143 144 xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM; 145 xiocb.xiocb_status = 0; 146 xiocb.xiocb_handle = 0; 147 xiocb.xiocb_flags = flags; 148 xiocb.xiocb_psize = sizeof(struct xiocb_meminfo); 149 xiocb.plist.xiocb_meminfo.mi_idx = idx; 150 151 cfe_iocb_dispatch(&xiocb); 152 153 if (xiocb.xiocb_status < 0) 154 return xiocb.xiocb_status; 155 156 *start = xiocb.plist.xiocb_meminfo.mi_addr; 157 *length = xiocb.plist.xiocb_meminfo.mi_size; 158 *type = xiocb.plist.xiocb_meminfo.mi_type; 159 160 return 0; 161} 162 163int cfe_exit(int warm, int status) 164{ 165 struct cfe_xiocb xiocb; 166 167 xiocb.xiocb_fcode = CFE_CMD_FW_RESTART; 168 xiocb.xiocb_status = 0; 169 xiocb.xiocb_handle = 0; 170 xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0; 171 xiocb.xiocb_psize = sizeof(struct xiocb_exitstat); 172 xiocb.plist.xiocb_exitstat.status = status; 173 174 cfe_iocb_dispatch(&xiocb); 175 176 return xiocb.xiocb_status; 177} 178 179int cfe_flushcache(int flg) 180{ 181 struct cfe_xiocb xiocb; 182 183 xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE; 184 xiocb.xiocb_status = 0; 185 xiocb.xiocb_handle = 0; 186 xiocb.xiocb_flags = flg; 187 xiocb.xiocb_psize = 0; 188 189 cfe_iocb_dispatch(&xiocb); 190 191 return xiocb.xiocb_status; 192} 193 194int cfe_getdevinfo(char *name) 195{ 196 struct cfe_xiocb xiocb; 197 198 xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO; 199 xiocb.xiocb_status = 0; 200 xiocb.xiocb_handle = 0; 201 xiocb.xiocb_flags = 0; 202 xiocb.xiocb_psize = sizeof(struct xiocb_buffer); 203 xiocb.plist.xiocb_buffer.buf_offset = 0; 204 xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name); 205 xiocb.plist.xiocb_buffer.buf_length = strlen(name); 206 207 cfe_iocb_dispatch(&xiocb); 208 209 if (xiocb.xiocb_status < 0) 210 return xiocb.xiocb_status; 211 return xiocb.plist.xiocb_buffer.buf_ioctlcmd; 212} 213 214int cfe_getenv(char *name, char *dest, int destlen) 215{ 216 struct cfe_xiocb xiocb; 217 218 *dest = 0; 219 220 xiocb.xiocb_fcode = CFE_CMD_ENV_GET; 221 xiocb.xiocb_status = 0; 222 xiocb.xiocb_handle = 0; 223 xiocb.xiocb_flags = 0; 224 xiocb.xiocb_psize = sizeof(struct xiocb_envbuf); 225 xiocb.plist.xiocb_envbuf.enum_idx = 0; 226 xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name); 227 xiocb.plist.xiocb_envbuf.name_length = strlen(name); 228 xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest); 229 xiocb.plist.xiocb_envbuf.val_length = destlen; 230 231 cfe_iocb_dispatch(&xiocb); 232 233 return xiocb.xiocb_status; 234} 235 236int cfe_getfwinfo(cfe_fwinfo_t * info) 237{ 238 struct cfe_xiocb xiocb; 239 240 xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO; 241 xiocb.xiocb_status = 0; 242 xiocb.xiocb_handle = 0; 243 xiocb.xiocb_flags = 0; 244 xiocb.xiocb_psize = sizeof(struct xiocb_fwinfo); 245 246 cfe_iocb_dispatch(&xiocb); 247 248 if (xiocb.xiocb_status < 0) 249 return xiocb.xiocb_status; 250 251 info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version; 252 info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem; 253 info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags; 254 info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid; 255 info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va; 256 info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa; 257 info->fwi_bootarea_size = 258 xiocb.plist.xiocb_fwinfo.fwi_bootarea_size; 259#if 0 260 info->fwi_reserved1 = xiocb.plist.xiocb_fwinfo.fwi_reserved1; 261 info->fwi_reserved2 = xiocb.plist.xiocb_fwinfo.fwi_reserved2; 262 info->fwi_reserved3 = xiocb.plist.xiocb_fwinfo.fwi_reserved3; 263#endif 264 265 return 0; 266} 267 268int cfe_getstdhandle(int flg) 269{ 270 struct cfe_xiocb xiocb; 271 272 xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE; 273 xiocb.xiocb_status = 0; 274 xiocb.xiocb_handle = 0; 275 xiocb.xiocb_flags = flg; 276 xiocb.xiocb_psize = 0; 277 278 cfe_iocb_dispatch(&xiocb); 279 280 if (xiocb.xiocb_status < 0) 281 return xiocb.xiocb_status; 282 return xiocb.xiocb_handle; 283} 284 285int64_t 286cfe_getticks(void) 287{ 288 struct cfe_xiocb xiocb; 289 290 xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME; 291 xiocb.xiocb_status = 0; 292 xiocb.xiocb_handle = 0; 293 xiocb.xiocb_flags = 0; 294 xiocb.xiocb_psize = sizeof(struct xiocb_time); 295 xiocb.plist.xiocb_time.ticks = 0; 296 297 cfe_iocb_dispatch(&xiocb); 298 299 return xiocb.plist.xiocb_time.ticks; 300 301} 302 303int cfe_inpstat(int handle) 304{ 305 struct cfe_xiocb xiocb; 306 307 xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT; 308 xiocb.xiocb_status = 0; 309 xiocb.xiocb_handle = handle; 310 xiocb.xiocb_flags = 0; 311 xiocb.xiocb_psize = sizeof(struct xiocb_inpstat); 312 xiocb.plist.xiocb_inpstat.inp_status = 0; 313 314 cfe_iocb_dispatch(&xiocb); 315 316 if (xiocb.xiocb_status < 0) 317 return xiocb.xiocb_status; 318 return xiocb.plist.xiocb_inpstat.inp_status; 319} 320 321int 322cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer, 323 int length, int *retlen, u64 offset) 324{ 325 struct cfe_xiocb xiocb; 326 327 xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL; 328 xiocb.xiocb_status = 0; 329 xiocb.xiocb_handle = handle; 330 xiocb.xiocb_flags = 0; 331 xiocb.xiocb_psize = sizeof(struct xiocb_buffer); 332 xiocb.plist.xiocb_buffer.buf_offset = offset; 333 xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum; 334 xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer); 335 xiocb.plist.xiocb_buffer.buf_length = length; 336 337 cfe_iocb_dispatch(&xiocb); 338 339 if (retlen) 340 *retlen = xiocb.plist.xiocb_buffer.buf_retlen; 341 return xiocb.xiocb_status; 342} 343 344int cfe_open(char *name) 345{ 346 struct cfe_xiocb xiocb; 347 348 xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN; 349 xiocb.xiocb_status = 0; 350 xiocb.xiocb_handle = 0; 351 xiocb.xiocb_flags = 0; 352 xiocb.xiocb_psize = sizeof(struct xiocb_buffer); 353 xiocb.plist.xiocb_buffer.buf_offset = 0; 354 xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name); 355 xiocb.plist.xiocb_buffer.buf_length = strlen(name); 356 357 cfe_iocb_dispatch(&xiocb); 358 359 if (xiocb.xiocb_status < 0) 360 return xiocb.xiocb_status; 361 return xiocb.xiocb_handle; 362} 363 364int cfe_read(int handle, unsigned char *buffer, int length) 365{ 366 return cfe_readblk(handle, 0, buffer, length); 367} 368 369int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length) 370{ 371 struct cfe_xiocb xiocb; 372 373 xiocb.xiocb_fcode = CFE_CMD_DEV_READ; 374 xiocb.xiocb_status = 0; 375 xiocb.xiocb_handle = handle; 376 xiocb.xiocb_flags = 0; 377 xiocb.xiocb_psize = sizeof(struct xiocb_buffer); 378 xiocb.plist.xiocb_buffer.buf_offset = offset; 379 xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer); 380 xiocb.plist.xiocb_buffer.buf_length = length; 381 382 cfe_iocb_dispatch(&xiocb); 383 384 if (xiocb.xiocb_status < 0) 385 return xiocb.xiocb_status; 386 return xiocb.plist.xiocb_buffer.buf_retlen; 387} 388 389int cfe_setenv(char *name, char *val) 390{ 391 struct cfe_xiocb xiocb; 392 393 xiocb.xiocb_fcode = CFE_CMD_ENV_SET; 394 xiocb.xiocb_status = 0; 395 xiocb.xiocb_handle = 0; 396 xiocb.xiocb_flags = 0; 397 xiocb.xiocb_psize = sizeof(struct xiocb_envbuf); 398 xiocb.plist.xiocb_envbuf.enum_idx = 0; 399 xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name); 400 xiocb.plist.xiocb_envbuf.name_length = strlen(name); 401 xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val); 402 xiocb.plist.xiocb_envbuf.val_length = strlen(val); 403 404 cfe_iocb_dispatch(&xiocb); 405 406 return xiocb.xiocb_status; 407} 408 409int cfe_write(int handle, const char *buffer, int length) 410{ 411 return cfe_writeblk(handle, 0, buffer, length); 412} 413 414int cfe_writeblk(int handle, s64 offset, const char *buffer, int length) 415{ 416 struct cfe_xiocb xiocb; 417 418 xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE; 419 xiocb.xiocb_status = 0; 420 xiocb.xiocb_handle = handle; 421 xiocb.xiocb_flags = 0; 422 xiocb.xiocb_psize = sizeof(struct xiocb_buffer); 423 xiocb.plist.xiocb_buffer.buf_offset = offset; 424 xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer); 425 xiocb.plist.xiocb_buffer.buf_length = length; 426 427 cfe_iocb_dispatch(&xiocb); 428 429 if (xiocb.xiocb_status < 0) 430 return xiocb.xiocb_status; 431 return xiocb.plist.xiocb_buffer.buf_retlen; 432} 433