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
37 int 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
48 static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb);
49 static u64 cfe_handle;
50
cfe_init(u64 handle,u64 ept)51 int cfe_init(u64 handle, u64 ept)
52 {
53 cfe_dispfunc = NATIVE_FROM_XPTR(ept);
54 cfe_handle = handle;
55 return 0;
56 }
57
cfe_iocb_dispatch(struct cfe_xiocb * xiocb)58 int 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
cfe_close(int handle)65 int 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
cfe_cpu_start(int cpu,void (* fn)(void),long sp,long gp,long a1)81 int 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
cfe_cpu_stop(int cpu)102 int 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
cfe_enumenv(int idx,char * name,int namelen,char * val,int vallen)119 int 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
139 int
cfe_enummem(int idx,int flags,u64 * start,u64 * length,u64 * type)140 cfe_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
cfe_exit(int warm,int status)163 int 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
cfe_flushcache(int flg)179 int 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
cfe_getdevinfo(char * name)194 int 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
cfe_getenv(char * name,char * dest,int destlen)214 int 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
cfe_getfwinfo(cfe_fwinfo_t * info)236 int 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
cfe_getstdhandle(int flg)268 int 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
285 int64_t
cfe_getticks(void)286 cfe_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
cfe_inpstat(int handle)303 int 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
321 int
cfe_ioctl(int handle,unsigned int ioctlnum,unsigned char * buffer,int length,int * retlen,u64 offset)322 cfe_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
cfe_open(char * name)344 int 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
cfe_read(int handle,unsigned char * buffer,int length)364 int cfe_read(int handle, unsigned char *buffer, int length)
365 {
366 return cfe_readblk(handle, 0, buffer, length);
367 }
368
cfe_readblk(int handle,s64 offset,unsigned char * buffer,int length)369 int 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
cfe_setenv(char * name,char * val)389 int 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
cfe_write(int handle,unsigned char * buffer,int length)409 int cfe_write(int handle, unsigned char *buffer, int length)
410 {
411 return cfe_writeblk(handle, 0, buffer, length);
412 }
413
cfe_writeblk(int handle,s64 offset,unsigned char * buffer,int length)414 int cfe_writeblk(int handle, s64 offset, unsigned 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