x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
[linux/fpc-iii.git] / arch / mips / fw / cfe / cfe_api.c
blobcf84f01931c53e550b46ec1dec8729f8ae39c780
1 /*
2 * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
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.
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.
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.
21 * Broadcom Common Firmware Environment (CFE)
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.
27 * Authors: Mitch Lichtenberg, Chris Demetriou
30 #include <asm/fw/cfe/cfe_api.h>
31 #include "cfe_api_int.h"
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))
37 int cfe_iocb_dispatch(struct cfe_xiocb *xiocb);
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.
48 static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb);
49 static u64 cfe_handle;
51 int cfe_init(u64 handle, u64 ept)
53 cfe_dispfunc = NATIVE_FROM_XPTR(ept);
54 cfe_handle = handle;
55 return 0;
58 int cfe_iocb_dispatch(struct cfe_xiocb * xiocb)
60 if (!cfe_dispfunc)
61 return -1;
62 return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
65 int cfe_close(int handle)
67 struct cfe_xiocb xiocb;
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;
75 cfe_iocb_dispatch(&xiocb);
77 return xiocb.xiocb_status;
81 int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
83 struct cfe_xiocb xiocb;
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;
97 cfe_iocb_dispatch(&xiocb);
99 return xiocb.xiocb_status;
102 int cfe_cpu_stop(int cpu)
104 struct cfe_xiocb xiocb;
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;
114 cfe_iocb_dispatch(&xiocb);
116 return xiocb.xiocb_status;
119 int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
121 struct cfe_xiocb xiocb;
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;
134 cfe_iocb_dispatch(&xiocb);
136 return xiocb.xiocb_status;
140 cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type)
142 struct cfe_xiocb xiocb;
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;
151 cfe_iocb_dispatch(&xiocb);
153 if (xiocb.xiocb_status < 0)
154 return xiocb.xiocb_status;
156 *start = xiocb.plist.xiocb_meminfo.mi_addr;
157 *length = xiocb.plist.xiocb_meminfo.mi_size;
158 *type = xiocb.plist.xiocb_meminfo.mi_type;
160 return 0;
163 int cfe_exit(int warm, int status)
165 struct cfe_xiocb xiocb;
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;
174 cfe_iocb_dispatch(&xiocb);
176 return xiocb.xiocb_status;
179 int cfe_flushcache(int flg)
181 struct cfe_xiocb xiocb;
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;
189 cfe_iocb_dispatch(&xiocb);
191 return xiocb.xiocb_status;
194 int cfe_getdevinfo(char *name)
196 struct cfe_xiocb xiocb;
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);
207 cfe_iocb_dispatch(&xiocb);
209 if (xiocb.xiocb_status < 0)
210 return xiocb.xiocb_status;
211 return xiocb.plist.xiocb_buffer.buf_ioctlcmd;
214 int cfe_getenv(char *name, char *dest, int destlen)
216 struct cfe_xiocb xiocb;
218 *dest = 0;
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;
231 cfe_iocb_dispatch(&xiocb);
233 return xiocb.xiocb_status;
236 int cfe_getfwinfo(cfe_fwinfo_t * info)
238 struct cfe_xiocb xiocb;
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);
246 cfe_iocb_dispatch(&xiocb);
248 if (xiocb.xiocb_status < 0)
249 return xiocb.xiocb_status;
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
265 return 0;
268 int cfe_getstdhandle(int flg)
270 struct cfe_xiocb xiocb;
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;
278 cfe_iocb_dispatch(&xiocb);
280 if (xiocb.xiocb_status < 0)
281 return xiocb.xiocb_status;
282 return xiocb.xiocb_handle;
285 int64_t
286 cfe_getticks(void)
288 struct cfe_xiocb xiocb;
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;
297 cfe_iocb_dispatch(&xiocb);
299 return xiocb.plist.xiocb_time.ticks;
303 int cfe_inpstat(int handle)
305 struct cfe_xiocb xiocb;
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;
314 cfe_iocb_dispatch(&xiocb);
316 if (xiocb.xiocb_status < 0)
317 return xiocb.xiocb_status;
318 return xiocb.plist.xiocb_inpstat.inp_status;
322 cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
323 int length, int *retlen, u64 offset)
325 struct cfe_xiocb xiocb;
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;
337 cfe_iocb_dispatch(&xiocb);
339 if (retlen)
340 *retlen = xiocb.plist.xiocb_buffer.buf_retlen;
341 return xiocb.xiocb_status;
344 int cfe_open(char *name)
346 struct cfe_xiocb xiocb;
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);
357 cfe_iocb_dispatch(&xiocb);
359 if (xiocb.xiocb_status < 0)
360 return xiocb.xiocb_status;
361 return xiocb.xiocb_handle;
364 int cfe_read(int handle, unsigned char *buffer, int length)
366 return cfe_readblk(handle, 0, buffer, length);
369 int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length)
371 struct cfe_xiocb xiocb;
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;
382 cfe_iocb_dispatch(&xiocb);
384 if (xiocb.xiocb_status < 0)
385 return xiocb.xiocb_status;
386 return xiocb.plist.xiocb_buffer.buf_retlen;
389 int cfe_setenv(char *name, char *val)
391 struct cfe_xiocb xiocb;
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);
404 cfe_iocb_dispatch(&xiocb);
406 return xiocb.xiocb_status;
409 int cfe_write(int handle, const char *buffer, int length)
411 return cfe_writeblk(handle, 0, buffer, length);
414 int cfe_writeblk(int handle, s64 offset, const char *buffer, int length)
416 struct cfe_xiocb xiocb;
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;
427 cfe_iocb_dispatch(&xiocb);
429 if (xiocb.xiocb_status < 0)
430 return xiocb.xiocb_status;
431 return xiocb.plist.xiocb_buffer.buf_retlen;