1/*-
2 * Copyright (C) 2006-2012 Semihalf
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
19 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
21 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
22 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25/*-
26 * Copyright (C) 2001 Benno Rice
27 * All rights reserved.
28 *
29 * Redistribution and use in source and binary forms, with or without
30 * modification, are permitted provided that the following conditions
31 * are met:
32 * 1. Redistributions of source code must retain the above copyright
33 * notice, this list of conditions and the following disclaimer.
34 * 2. Redistributions in binary form must reproduce the above copyright
35 * notice, this list of conditions and the following disclaimer in the
36 * documentation and/or other materials provided with the distribution.
37 *
38 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
41 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
44 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
45 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
46 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
47 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 * $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $
49 */
50/*-
51 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
52 * Copyright (C) 1995, 1996 TooLs GmbH.
53 * All rights reserved.
54 *
55 * Redistribution and use in source and binary forms, with or without
56 * modification, are permitted provided that the following conditions
57 * are met:
58 * 1. Redistributions of source code must retain the above copyright
59 * notice, this list of conditions and the following disclaimer.
60 * 2. Redistributions in binary form must reproduce the above copyright
61 * notice, this list of conditions and the following disclaimer in the
62 * documentation and/or other materials provided with the distribution.
63 * 3. All advertising materials mentioning features or use of this software
64 * must display the following acknowledgement:
65 * This product includes software developed by TooLs GmbH.
66 * 4. The name of TooLs GmbH may not be used to endorse or promote products
67 * derived from this software without specific prior written permission.
68 *
69 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
70 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
71 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
72 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
73 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
74 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
75 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
76 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
77 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
78 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
79 */
80
81#include <sys/cdefs.h>
| 1/*-
2 * Copyright (C) 2006-2012 Semihalf
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
19 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
21 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
22 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25/*-
26 * Copyright (C) 2001 Benno Rice
27 * All rights reserved.
28 *
29 * Redistribution and use in source and binary forms, with or without
30 * modification, are permitted provided that the following conditions
31 * are met:
32 * 1. Redistributions of source code must retain the above copyright
33 * notice, this list of conditions and the following disclaimer.
34 * 2. Redistributions in binary form must reproduce the above copyright
35 * notice, this list of conditions and the following disclaimer in the
36 * documentation and/or other materials provided with the distribution.
37 *
38 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
41 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
44 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
45 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
46 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
47 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 * $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $
49 */
50/*-
51 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
52 * Copyright (C) 1995, 1996 TooLs GmbH.
53 * All rights reserved.
54 *
55 * Redistribution and use in source and binary forms, with or without
56 * modification, are permitted provided that the following conditions
57 * are met:
58 * 1. Redistributions of source code must retain the above copyright
59 * notice, this list of conditions and the following disclaimer.
60 * 2. Redistributions in binary form must reproduce the above copyright
61 * notice, this list of conditions and the following disclaimer in the
62 * documentation and/or other materials provided with the distribution.
63 * 3. All advertising materials mentioning features or use of this software
64 * must display the following acknowledgement:
65 * This product includes software developed by TooLs GmbH.
66 * 4. The name of TooLs GmbH may not be used to endorse or promote products
67 * derived from this software without specific prior written permission.
68 *
69 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
70 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
71 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
72 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
73 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
74 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
75 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
76 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
77 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
78 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
79 */
80
81#include <sys/cdefs.h>
|
82__FBSDID("$FreeBSD: head/sys/powerpc/booke/machdep.c 258244 2013-11-17 02:03:36Z nwhitehorn $");
| 82__FBSDID("$FreeBSD: head/sys/powerpc/booke/machdep.c 263620 2014-03-22 10:26:09Z bdrewery $");
|
83
84#include "opt_compat.h"
85#include "opt_ddb.h"
86#include "opt_kstack_pages.h"
87#include "opt_platform.h"
88
89#include <sys/cdefs.h>
90#include <sys/types.h>
91#include <sys/param.h>
92#include <sys/proc.h>
93#include <sys/systm.h>
94#include <sys/time.h>
95#include <sys/bio.h>
96#include <sys/buf.h>
97#include <sys/bus.h>
98#include <sys/cons.h>
99#include <sys/cpu.h>
100#include <sys/kdb.h>
101#include <sys/kernel.h>
102#include <sys/lock.h>
103#include <sys/mutex.h>
104#include <sys/rwlock.h>
105#include <sys/sysctl.h>
106#include <sys/exec.h>
107#include <sys/ktr.h>
108#include <sys/syscallsubr.h>
109#include <sys/sysproto.h>
110#include <sys/signalvar.h>
111#include <sys/sysent.h>
112#include <sys/imgact.h>
113#include <sys/msgbuf.h>
114#include <sys/ptrace.h>
115
116#include <vm/vm.h>
117#include <vm/pmap.h>
118#include <vm/vm_page.h>
119#include <vm/vm_object.h>
120#include <vm/vm_pager.h>
121
122#include <machine/cpu.h>
123#include <machine/kdb.h>
124#include <machine/reg.h>
125#include <machine/vmparam.h>
126#include <machine/spr.h>
127#include <machine/hid.h>
128#include <machine/psl.h>
129#include <machine/trap.h>
130#include <machine/md_var.h>
131#include <machine/mmuvar.h>
132#include <machine/sigframe.h>
133#include <machine/machdep.h>
134#include <machine/metadata.h>
135#include <machine/platform.h>
136
137#include <sys/linker.h>
138#include <sys/reboot.h>
139
140#include <contrib/libfdt/libfdt.h>
141#include <dev/fdt/fdt_common.h>
142#include <dev/ofw/openfirm.h>
143
144#ifdef DDB
145extern vm_offset_t ksym_start, ksym_end;
146#endif
147
148#ifdef DEBUG
149#define debugf(fmt, args...) printf(fmt, ##args)
150#else
151#define debugf(fmt, args...)
152#endif
153
154extern unsigned char kernel_text[];
155extern unsigned char _etext[];
156extern unsigned char _edata[];
157extern unsigned char __bss_start[];
158extern unsigned char __sbss_start[];
159extern unsigned char __sbss_end[];
160extern unsigned char _end[];
161
162/*
163 * Bootinfo is passed to us by legacy loaders. Save the address of the
164 * structure to handle backward compatibility.
165 */
166uint32_t *bootinfo;
167
168struct kva_md_info kmi;
169struct pcpu __pcpu[MAXCPU];
170struct trapframe frame0;
171int cold = 1;
172long realmem = 0;
173long Maxmem = 0;
174char machine[] = "powerpc";
175SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
176
177int cacheline_size = 32;
178
179SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
180 CTLFLAG_RD, &cacheline_size, 0, "");
181
182int hw_direct_map = 0;
183
184static void cpu_booke_startup(void *);
185SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_booke_startup, NULL);
186
187void print_kernel_section_addr(void);
188void print_kenv(void);
189u_int booke_init(uint32_t, uint32_t);
190
191extern int elf32_nxstack;
192
193static void
194cpu_booke_startup(void *dummy)
195{
196 int indx;
197 unsigned long size;
198
199 /* Initialise the decrementer-based clock. */
200 decr_init();
201
202 /* Good {morning,afternoon,evening,night}. */
203 cpu_setup(PCPU_GET(cpuid));
204
205 printf("real memory = %lu (%ld MB)\n", ptoa(physmem),
206 ptoa(physmem) / 1048576);
207 realmem = physmem;
208
209 /* Display any holes after the first chunk of extended memory. */
210 if (bootverbose) {
211 printf("Physical memory chunk(s):\n");
212 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
213 size = phys_avail[indx + 1] - phys_avail[indx];
214
215 printf("0x%08x - 0x%08x, %lu bytes (%lu pages)\n",
216 phys_avail[indx], phys_avail[indx + 1] - 1,
217 size, size / PAGE_SIZE);
218 }
219 }
220
221 vm_ksubmap_init(&kmi);
222
| 83
84#include "opt_compat.h"
85#include "opt_ddb.h"
86#include "opt_kstack_pages.h"
87#include "opt_platform.h"
88
89#include <sys/cdefs.h>
90#include <sys/types.h>
91#include <sys/param.h>
92#include <sys/proc.h>
93#include <sys/systm.h>
94#include <sys/time.h>
95#include <sys/bio.h>
96#include <sys/buf.h>
97#include <sys/bus.h>
98#include <sys/cons.h>
99#include <sys/cpu.h>
100#include <sys/kdb.h>
101#include <sys/kernel.h>
102#include <sys/lock.h>
103#include <sys/mutex.h>
104#include <sys/rwlock.h>
105#include <sys/sysctl.h>
106#include <sys/exec.h>
107#include <sys/ktr.h>
108#include <sys/syscallsubr.h>
109#include <sys/sysproto.h>
110#include <sys/signalvar.h>
111#include <sys/sysent.h>
112#include <sys/imgact.h>
113#include <sys/msgbuf.h>
114#include <sys/ptrace.h>
115
116#include <vm/vm.h>
117#include <vm/pmap.h>
118#include <vm/vm_page.h>
119#include <vm/vm_object.h>
120#include <vm/vm_pager.h>
121
122#include <machine/cpu.h>
123#include <machine/kdb.h>
124#include <machine/reg.h>
125#include <machine/vmparam.h>
126#include <machine/spr.h>
127#include <machine/hid.h>
128#include <machine/psl.h>
129#include <machine/trap.h>
130#include <machine/md_var.h>
131#include <machine/mmuvar.h>
132#include <machine/sigframe.h>
133#include <machine/machdep.h>
134#include <machine/metadata.h>
135#include <machine/platform.h>
136
137#include <sys/linker.h>
138#include <sys/reboot.h>
139
140#include <contrib/libfdt/libfdt.h>
141#include <dev/fdt/fdt_common.h>
142#include <dev/ofw/openfirm.h>
143
144#ifdef DDB
145extern vm_offset_t ksym_start, ksym_end;
146#endif
147
148#ifdef DEBUG
149#define debugf(fmt, args...) printf(fmt, ##args)
150#else
151#define debugf(fmt, args...)
152#endif
153
154extern unsigned char kernel_text[];
155extern unsigned char _etext[];
156extern unsigned char _edata[];
157extern unsigned char __bss_start[];
158extern unsigned char __sbss_start[];
159extern unsigned char __sbss_end[];
160extern unsigned char _end[];
161
162/*
163 * Bootinfo is passed to us by legacy loaders. Save the address of the
164 * structure to handle backward compatibility.
165 */
166uint32_t *bootinfo;
167
168struct kva_md_info kmi;
169struct pcpu __pcpu[MAXCPU];
170struct trapframe frame0;
171int cold = 1;
172long realmem = 0;
173long Maxmem = 0;
174char machine[] = "powerpc";
175SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
176
177int cacheline_size = 32;
178
179SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
180 CTLFLAG_RD, &cacheline_size, 0, "");
181
182int hw_direct_map = 0;
183
184static void cpu_booke_startup(void *);
185SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_booke_startup, NULL);
186
187void print_kernel_section_addr(void);
188void print_kenv(void);
189u_int booke_init(uint32_t, uint32_t);
190
191extern int elf32_nxstack;
192
193static void
194cpu_booke_startup(void *dummy)
195{
196 int indx;
197 unsigned long size;
198
199 /* Initialise the decrementer-based clock. */
200 decr_init();
201
202 /* Good {morning,afternoon,evening,night}. */
203 cpu_setup(PCPU_GET(cpuid));
204
205 printf("real memory = %lu (%ld MB)\n", ptoa(physmem),
206 ptoa(physmem) / 1048576);
207 realmem = physmem;
208
209 /* Display any holes after the first chunk of extended memory. */
210 if (bootverbose) {
211 printf("Physical memory chunk(s):\n");
212 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
213 size = phys_avail[indx + 1] - phys_avail[indx];
214
215 printf("0x%08x - 0x%08x, %lu bytes (%lu pages)\n",
216 phys_avail[indx], phys_avail[indx + 1] - 1,
217 size, size / PAGE_SIZE);
218 }
219 }
220
221 vm_ksubmap_init(&kmi);
222
|
223 printf("avail memory = %lu (%ld MB)\n", ptoa(cnt.v_free_count),
224 ptoa(cnt.v_free_count) / 1048576);
| 223 printf("avail memory = %lu (%ld MB)\n", ptoa(vm_cnt.v_free_count),
224 ptoa(vm_cnt.v_free_count) / 1048576);
|
225
226 /* Set up buffers, so they can be used to read disk labels. */
227 bufinit();
228 vm_pager_bufferinit();
229
230 /* Cpu supports execution permissions on the pages. */
231 elf32_nxstack = 1;
232}
233
234static char *
235kenv_next(char *cp)
236{
237
238 if (cp != NULL) {
239 while (*cp != 0)
240 cp++;
241 cp++;
242 if (*cp == 0)
243 cp = NULL;
244 }
245 return (cp);
246}
247
248void
249print_kenv(void)
250{
251 int len;
252 char *cp;
253
254 debugf("loader passed (static) kenv:\n");
255 if (kern_envp == NULL) {
256 debugf(" no env, null ptr\n");
257 return;
258 }
259 debugf(" kern_envp = 0x%08x\n", (u_int32_t)kern_envp);
260
261 len = 0;
262 for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
263 debugf(" %x %s\n", (u_int32_t)cp, cp);
264}
265
266void
267print_kernel_section_addr(void)
268{
269
270 debugf("kernel image addresses:\n");
271 debugf(" kernel_text = 0x%08x\n", (uint32_t)kernel_text);
272 debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
273 debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
274 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
275 debugf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
276 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
277 debugf(" _end = 0x%08x\n", (uint32_t)_end);
278}
279
280static int
281booke_check_for_fdt(uint32_t arg1, vm_offset_t *dtbp)
282{
283 void *ptr;
284
285 if (arg1 % 8 != 0)
286 return (-1);
287
288 ptr = (void *)pmap_early_io_map(arg1, PAGE_SIZE);
289 if (fdt_check_header(ptr) != 0)
290 return (-1);
291
292 *dtbp = (vm_offset_t)ptr;
293
294 return (0);
295}
296
297u_int
298booke_init(uint32_t arg1, uint32_t arg2)
299{
300 struct pcpu *pc;
301 void *kmdp, *mdp;
302 vm_offset_t dtbp, end;
303
304 kmdp = NULL;
305
306 end = (uintptr_t)_end;
307 dtbp = (vm_offset_t)NULL;
308
309 /* Set up TLB initially */
310 bootinfo = NULL;
311 tlb1_init();
312
313 /*
314 * Handle the various ways we can get loaded and started:
315 * - FreeBSD's loader passes the pointer to the metadata
316 * in arg1, with arg2 undefined. arg1 has a value that's
317 * relative to the kernel's link address (i.e. larger
318 * than 0xc0000000).
319 * - Juniper's loader passes the metadata pointer in arg2
320 * and sets arg1 to zero. This is to signal that the
321 * loader maps the kernel and starts it at its link
322 * address (unlike the FreeBSD loader).
323 * - U-Boot passes the standard argc and argv parameters
324 * in arg1 and arg2 (resp). arg1 is between 1 and some
325 * relatively small number, such as 64K. arg2 is the
326 * physical address of the argv vector.
327 * - ePAPR loaders pass an FDT blob in r3 (arg1) and the magic hex
328 * string 0x45504150 ('ePAP') in r6 (which has been lost by now).
329 * r4 (arg2) is supposed to be set to zero, but is not always.
330 */
331
332 if (arg1 == 0) /* Juniper loader */
333 mdp = (void *)arg2;
334 else if (booke_check_for_fdt(arg1, &dtbp) == 0) { /* ePAPR */
335 end = roundup(end, 8);
336 memmove((void *)end, (void *)dtbp, fdt_totalsize((void *)dtbp));
337 dtbp = end;
338 end += fdt_totalsize((void *)dtbp);
339 mdp = NULL;
340 } else if (arg1 > (uintptr_t)kernel_text) /* FreeBSD loader */
341 mdp = (void *)arg1;
342 else /* U-Boot */
343 mdp = NULL;
344
345 /*
346 * Parse metadata and fetch parameters.
347 */
348 if (mdp != NULL) {
349 preload_metadata = mdp;
350 kmdp = preload_search_by_type("elf kernel");
351 if (kmdp != NULL) {
352 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
353 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
354 dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
355 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
356
357 bootinfo = (uint32_t *)preload_search_info(kmdp,
358 MODINFO_METADATA | MODINFOMD_BOOTINFO);
359
360#ifdef DDB
361 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
362 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
363#endif
364 }
365 } else {
366 bzero(__sbss_start, __sbss_end - __sbss_start);
367 bzero(__bss_start, _end - __bss_start);
368 }
369
370#if defined(FDT_DTB_STATIC)
371 /*
372 * In case the device tree blob was not retrieved (from metadata) try
373 * to use the statically embedded one.
374 */
375 if (dtbp == (vm_offset_t)NULL)
376 dtbp = (vm_offset_t)&fdt_static_dtb;
377#endif
378
379 if (OF_install(OFW_FDT, 0) == FALSE)
380 while (1);
381
382 if (OF_init((void *)dtbp) != 0)
383 while (1);
384
385 OF_interpret("perform-fixup", 0);
386
387 /* Reset TLB1 to get rid of temporary mappings */
388 tlb1_init();
389
390 /* Reset Time Base */
391 mttb(0);
392
393 /* Init params/tunables that can be overridden by the loader. */
394 init_param1();
395
396 /* Start initializing proc0 and thread0. */
397 proc_linkup0(&proc0, &thread0);
398 thread0.td_frame = &frame0;
399
400 /* Set up per-cpu data and store the pointer in SPR general 0. */
401 pc = &__pcpu[0];
402 pcpu_init(pc, 0, sizeof(struct pcpu));
403 pc->pc_curthread = &thread0;
404#ifdef __powerpc64__
405 __asm __volatile("mr 13,%0" :: "r"(pc->pc_curthread));
406#else
407 __asm __volatile("mr 2,%0" :: "r"(pc->pc_curthread));
408#endif
409 __asm __volatile("mtsprg 0, %0" :: "r"(pc));
410
411 /* Initialize system mutexes. */
412 mutex_init();
413
414 /* Initialize the console before printing anything. */
415 cninit();
416
417 /* Print out some debug info... */
418 debugf("%s: console initialized\n", __func__);
419 debugf(" arg3 mdp = 0x%08x\n", (u_int32_t)mdp);
420 debugf(" end = 0x%08x\n", (u_int32_t)end);
421 debugf(" boothowto = 0x%08x\n", boothowto);
422 debugf(" kernel ccsrbar = 0x%08x\n", CCSRBAR_VA);
423 debugf(" MSR = 0x%08x\n", mfmsr());
424#if defined(BOOKE_E500)
425 debugf(" HID0 = 0x%08x\n", mfspr(SPR_HID0));
426 debugf(" HID1 = 0x%08x\n", mfspr(SPR_HID1));
427 debugf(" BUCSR = 0x%08x\n", mfspr(SPR_BUCSR));
428#endif
429
430 debugf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
431
432 print_kernel_section_addr();
433 print_kenv();
434#if defined(BOOKE_E500)
435 //tlb1_print_entries();
436 //tlb1_print_tlbentries();
437#endif
438
439 kdb_init();
440
441#ifdef KDB
442 if (boothowto & RB_KDB)
443 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
444#endif
445
446 /* Initialise platform module */
447 platform_probe_and_attach();
448
449 /* Initialise virtual memory. */
450 pmap_mmu_install(MMU_TYPE_BOOKE, 0);
451 pmap_bootstrap((uintptr_t)kernel_text, end);
452 pmap_bootstrapped = 1;
453 debugf("MSR = 0x%08x\n", mfmsr());
454#if defined(BOOKE_E500)
455 //tlb1_print_entries();
456 //tlb1_print_tlbentries();
457#endif
458
459 /* Initialize params/tunables that are derived from memsize. */
460 init_param2(physmem);
461
462 /* Finish setting up thread0. */
463 thread0.td_pcb = (struct pcb *)
464 ((thread0.td_kstack + thread0.td_kstack_pages * PAGE_SIZE -
465 sizeof(struct pcb)) & ~15);
466 bzero((void *)thread0.td_pcb, sizeof(struct pcb));
467 pc->pc_curpcb = thread0.td_pcb;
468
469 /* Initialise the message buffer. */
470 msgbufinit(msgbufp, msgbufsize);
471
472 /* Enable Machine Check interrupt. */
473 mtmsr(mfmsr() | PSL_ME);
474 isync();
475
476 /* Enable L1 caches */
477 booke_enable_l1_cache();
478
479 debugf("%s: SP = 0x%08x\n", __func__,
480 ((uintptr_t)thread0.td_pcb - 16) & ~15);
481
482 return (((uintptr_t)thread0.td_pcb - 16) & ~15);
483}
484
485#define RES_GRANULE 32
486extern uint32_t tlb0_miss_locks[];
487
488/* Initialise a struct pcpu. */
489void
490cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t sz)
491{
492
493 pcpu->pc_tid_next = TID_MIN;
494
495#ifdef SMP
496 uint32_t *ptr;
497 int words_per_gran = RES_GRANULE / sizeof(uint32_t);
498
499 ptr = &tlb0_miss_locks[cpuid * words_per_gran];
500 pcpu->pc_booke_tlb_lock = ptr;
501 *ptr = TLB_UNLOCKED;
502 *(ptr + 1) = 0; /* recurse counter */
503#endif
504}
505
506/*
507 * Flush the D-cache for non-DMA I/O so that the I-cache can
508 * be made coherent later.
509 */
510void
511cpu_flush_dcache(void *ptr, size_t len)
512{
513 register_t addr, off;
514
515 /*
516 * Align the address to a cacheline and adjust the length
517 * accordingly. Then round the length to a multiple of the
518 * cacheline for easy looping.
519 */
520 addr = (uintptr_t)ptr;
521 off = addr & (cacheline_size - 1);
522 addr -= off;
523 len = (len + off + cacheline_size - 1) & ~(cacheline_size - 1);
524
525 while (len > 0) {
526 __asm __volatile ("dcbf 0,%0" :: "r"(addr));
527 __asm __volatile ("sync");
528 addr += cacheline_size;
529 len -= cacheline_size;
530 }
531}
532
533void
534spinlock_enter(void)
535{
536 struct thread *td;
537 register_t msr;
538
539 td = curthread;
540 if (td->td_md.md_spinlock_count == 0) {
541 msr = intr_disable();
542 td->td_md.md_spinlock_count = 1;
543 td->td_md.md_saved_msr = msr;
544 } else
545 td->td_md.md_spinlock_count++;
546 critical_enter();
547}
548
549void
550spinlock_exit(void)
551{
552 struct thread *td;
553 register_t msr;
554
555 td = curthread;
556 critical_exit();
557 msr = td->td_md.md_saved_msr;
558 td->td_md.md_spinlock_count--;
559 if (td->td_md.md_spinlock_count == 0)
560 intr_restore(msr);
561}
562
563/* Shutdown the CPU as much as possible. */
564void
565cpu_halt(void)
566{
567
568 mtmsr(mfmsr() & ~(PSL_CE | PSL_EE | PSL_ME | PSL_DE));
569 while (1)
570 ;
571}
572
573int
574ptrace_set_pc(struct thread *td, unsigned long addr)
575{
576 struct trapframe *tf;
577
578 tf = td->td_frame;
579 tf->srr0 = (register_t)addr;
580
581 return (0);
582}
583
584int
585ptrace_single_step(struct thread *td)
586{
587 struct trapframe *tf;
588
589 tf = td->td_frame;
590 tf->srr1 |= PSL_DE;
591 tf->cpu.booke.dbcr0 |= (DBCR0_IDM | DBCR0_IC);
592 return (0);
593}
594
595int
596ptrace_clear_single_step(struct thread *td)
597{
598 struct trapframe *tf;
599
600 tf = td->td_frame;
601 tf->srr1 &= ~PSL_DE;
602 tf->cpu.booke.dbcr0 &= ~(DBCR0_IDM | DBCR0_IC);
603 return (0);
604}
605
606void
607kdb_cpu_clear_singlestep(void)
608{
609 register_t r;
610
611 r = mfspr(SPR_DBCR0);
612 mtspr(SPR_DBCR0, r & ~DBCR0_IC);
613 kdb_frame->srr1 &= ~PSL_DE;
614}
615
616void
617kdb_cpu_set_singlestep(void)
618{
619 register_t r;
620
621 r = mfspr(SPR_DBCR0);
622 mtspr(SPR_DBCR0, r | DBCR0_IC | DBCR0_IDM);
623 kdb_frame->srr1 |= PSL_DE;
624}
625
626void
627bzero(void *buf, size_t len)
628{
629 caddr_t p;
630
631 p = buf;
632
633 while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
634 *p++ = 0;
635 len--;
636 }
637
638 while (len >= sizeof(u_long) * 8) {
639 *(u_long*) p = 0;
640 *((u_long*) p + 1) = 0;
641 *((u_long*) p + 2) = 0;
642 *((u_long*) p + 3) = 0;
643 len -= sizeof(u_long) * 8;
644 *((u_long*) p + 4) = 0;
645 *((u_long*) p + 5) = 0;
646 *((u_long*) p + 6) = 0;
647 *((u_long*) p + 7) = 0;
648 p += sizeof(u_long) * 8;
649 }
650
651 while (len >= sizeof(u_long)) {
652 *(u_long*) p = 0;
653 len -= sizeof(u_long);
654 p += sizeof(u_long);
655 }
656
657 while (len) {
658 *p++ = 0;
659 len--;
660 }
661}
662
| 225
226 /* Set up buffers, so they can be used to read disk labels. */
227 bufinit();
228 vm_pager_bufferinit();
229
230 /* Cpu supports execution permissions on the pages. */
231 elf32_nxstack = 1;
232}
233
234static char *
235kenv_next(char *cp)
236{
237
238 if (cp != NULL) {
239 while (*cp != 0)
240 cp++;
241 cp++;
242 if (*cp == 0)
243 cp = NULL;
244 }
245 return (cp);
246}
247
248void
249print_kenv(void)
250{
251 int len;
252 char *cp;
253
254 debugf("loader passed (static) kenv:\n");
255 if (kern_envp == NULL) {
256 debugf(" no env, null ptr\n");
257 return;
258 }
259 debugf(" kern_envp = 0x%08x\n", (u_int32_t)kern_envp);
260
261 len = 0;
262 for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
263 debugf(" %x %s\n", (u_int32_t)cp, cp);
264}
265
266void
267print_kernel_section_addr(void)
268{
269
270 debugf("kernel image addresses:\n");
271 debugf(" kernel_text = 0x%08x\n", (uint32_t)kernel_text);
272 debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
273 debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
274 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
275 debugf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
276 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
277 debugf(" _end = 0x%08x\n", (uint32_t)_end);
278}
279
280static int
281booke_check_for_fdt(uint32_t arg1, vm_offset_t *dtbp)
282{
283 void *ptr;
284
285 if (arg1 % 8 != 0)
286 return (-1);
287
288 ptr = (void *)pmap_early_io_map(arg1, PAGE_SIZE);
289 if (fdt_check_header(ptr) != 0)
290 return (-1);
291
292 *dtbp = (vm_offset_t)ptr;
293
294 return (0);
295}
296
297u_int
298booke_init(uint32_t arg1, uint32_t arg2)
299{
300 struct pcpu *pc;
301 void *kmdp, *mdp;
302 vm_offset_t dtbp, end;
303
304 kmdp = NULL;
305
306 end = (uintptr_t)_end;
307 dtbp = (vm_offset_t)NULL;
308
309 /* Set up TLB initially */
310 bootinfo = NULL;
311 tlb1_init();
312
313 /*
314 * Handle the various ways we can get loaded and started:
315 * - FreeBSD's loader passes the pointer to the metadata
316 * in arg1, with arg2 undefined. arg1 has a value that's
317 * relative to the kernel's link address (i.e. larger
318 * than 0xc0000000).
319 * - Juniper's loader passes the metadata pointer in arg2
320 * and sets arg1 to zero. This is to signal that the
321 * loader maps the kernel and starts it at its link
322 * address (unlike the FreeBSD loader).
323 * - U-Boot passes the standard argc and argv parameters
324 * in arg1 and arg2 (resp). arg1 is between 1 and some
325 * relatively small number, such as 64K. arg2 is the
326 * physical address of the argv vector.
327 * - ePAPR loaders pass an FDT blob in r3 (arg1) and the magic hex
328 * string 0x45504150 ('ePAP') in r6 (which has been lost by now).
329 * r4 (arg2) is supposed to be set to zero, but is not always.
330 */
331
332 if (arg1 == 0) /* Juniper loader */
333 mdp = (void *)arg2;
334 else if (booke_check_for_fdt(arg1, &dtbp) == 0) { /* ePAPR */
335 end = roundup(end, 8);
336 memmove((void *)end, (void *)dtbp, fdt_totalsize((void *)dtbp));
337 dtbp = end;
338 end += fdt_totalsize((void *)dtbp);
339 mdp = NULL;
340 } else if (arg1 > (uintptr_t)kernel_text) /* FreeBSD loader */
341 mdp = (void *)arg1;
342 else /* U-Boot */
343 mdp = NULL;
344
345 /*
346 * Parse metadata and fetch parameters.
347 */
348 if (mdp != NULL) {
349 preload_metadata = mdp;
350 kmdp = preload_search_by_type("elf kernel");
351 if (kmdp != NULL) {
352 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
353 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
354 dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
355 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
356
357 bootinfo = (uint32_t *)preload_search_info(kmdp,
358 MODINFO_METADATA | MODINFOMD_BOOTINFO);
359
360#ifdef DDB
361 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
362 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
363#endif
364 }
365 } else {
366 bzero(__sbss_start, __sbss_end - __sbss_start);
367 bzero(__bss_start, _end - __bss_start);
368 }
369
370#if defined(FDT_DTB_STATIC)
371 /*
372 * In case the device tree blob was not retrieved (from metadata) try
373 * to use the statically embedded one.
374 */
375 if (dtbp == (vm_offset_t)NULL)
376 dtbp = (vm_offset_t)&fdt_static_dtb;
377#endif
378
379 if (OF_install(OFW_FDT, 0) == FALSE)
380 while (1);
381
382 if (OF_init((void *)dtbp) != 0)
383 while (1);
384
385 OF_interpret("perform-fixup", 0);
386
387 /* Reset TLB1 to get rid of temporary mappings */
388 tlb1_init();
389
390 /* Reset Time Base */
391 mttb(0);
392
393 /* Init params/tunables that can be overridden by the loader. */
394 init_param1();
395
396 /* Start initializing proc0 and thread0. */
397 proc_linkup0(&proc0, &thread0);
398 thread0.td_frame = &frame0;
399
400 /* Set up per-cpu data and store the pointer in SPR general 0. */
401 pc = &__pcpu[0];
402 pcpu_init(pc, 0, sizeof(struct pcpu));
403 pc->pc_curthread = &thread0;
404#ifdef __powerpc64__
405 __asm __volatile("mr 13,%0" :: "r"(pc->pc_curthread));
406#else
407 __asm __volatile("mr 2,%0" :: "r"(pc->pc_curthread));
408#endif
409 __asm __volatile("mtsprg 0, %0" :: "r"(pc));
410
411 /* Initialize system mutexes. */
412 mutex_init();
413
414 /* Initialize the console before printing anything. */
415 cninit();
416
417 /* Print out some debug info... */
418 debugf("%s: console initialized\n", __func__);
419 debugf(" arg3 mdp = 0x%08x\n", (u_int32_t)mdp);
420 debugf(" end = 0x%08x\n", (u_int32_t)end);
421 debugf(" boothowto = 0x%08x\n", boothowto);
422 debugf(" kernel ccsrbar = 0x%08x\n", CCSRBAR_VA);
423 debugf(" MSR = 0x%08x\n", mfmsr());
424#if defined(BOOKE_E500)
425 debugf(" HID0 = 0x%08x\n", mfspr(SPR_HID0));
426 debugf(" HID1 = 0x%08x\n", mfspr(SPR_HID1));
427 debugf(" BUCSR = 0x%08x\n", mfspr(SPR_BUCSR));
428#endif
429
430 debugf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
431
432 print_kernel_section_addr();
433 print_kenv();
434#if defined(BOOKE_E500)
435 //tlb1_print_entries();
436 //tlb1_print_tlbentries();
437#endif
438
439 kdb_init();
440
441#ifdef KDB
442 if (boothowto & RB_KDB)
443 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
444#endif
445
446 /* Initialise platform module */
447 platform_probe_and_attach();
448
449 /* Initialise virtual memory. */
450 pmap_mmu_install(MMU_TYPE_BOOKE, 0);
451 pmap_bootstrap((uintptr_t)kernel_text, end);
452 pmap_bootstrapped = 1;
453 debugf("MSR = 0x%08x\n", mfmsr());
454#if defined(BOOKE_E500)
455 //tlb1_print_entries();
456 //tlb1_print_tlbentries();
457#endif
458
459 /* Initialize params/tunables that are derived from memsize. */
460 init_param2(physmem);
461
462 /* Finish setting up thread0. */
463 thread0.td_pcb = (struct pcb *)
464 ((thread0.td_kstack + thread0.td_kstack_pages * PAGE_SIZE -
465 sizeof(struct pcb)) & ~15);
466 bzero((void *)thread0.td_pcb, sizeof(struct pcb));
467 pc->pc_curpcb = thread0.td_pcb;
468
469 /* Initialise the message buffer. */
470 msgbufinit(msgbufp, msgbufsize);
471
472 /* Enable Machine Check interrupt. */
473 mtmsr(mfmsr() | PSL_ME);
474 isync();
475
476 /* Enable L1 caches */
477 booke_enable_l1_cache();
478
479 debugf("%s: SP = 0x%08x\n", __func__,
480 ((uintptr_t)thread0.td_pcb - 16) & ~15);
481
482 return (((uintptr_t)thread0.td_pcb - 16) & ~15);
483}
484
485#define RES_GRANULE 32
486extern uint32_t tlb0_miss_locks[];
487
488/* Initialise a struct pcpu. */
489void
490cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t sz)
491{
492
493 pcpu->pc_tid_next = TID_MIN;
494
495#ifdef SMP
496 uint32_t *ptr;
497 int words_per_gran = RES_GRANULE / sizeof(uint32_t);
498
499 ptr = &tlb0_miss_locks[cpuid * words_per_gran];
500 pcpu->pc_booke_tlb_lock = ptr;
501 *ptr = TLB_UNLOCKED;
502 *(ptr + 1) = 0; /* recurse counter */
503#endif
504}
505
506/*
507 * Flush the D-cache for non-DMA I/O so that the I-cache can
508 * be made coherent later.
509 */
510void
511cpu_flush_dcache(void *ptr, size_t len)
512{
513 register_t addr, off;
514
515 /*
516 * Align the address to a cacheline and adjust the length
517 * accordingly. Then round the length to a multiple of the
518 * cacheline for easy looping.
519 */
520 addr = (uintptr_t)ptr;
521 off = addr & (cacheline_size - 1);
522 addr -= off;
523 len = (len + off + cacheline_size - 1) & ~(cacheline_size - 1);
524
525 while (len > 0) {
526 __asm __volatile ("dcbf 0,%0" :: "r"(addr));
527 __asm __volatile ("sync");
528 addr += cacheline_size;
529 len -= cacheline_size;
530 }
531}
532
533void
534spinlock_enter(void)
535{
536 struct thread *td;
537 register_t msr;
538
539 td = curthread;
540 if (td->td_md.md_spinlock_count == 0) {
541 msr = intr_disable();
542 td->td_md.md_spinlock_count = 1;
543 td->td_md.md_saved_msr = msr;
544 } else
545 td->td_md.md_spinlock_count++;
546 critical_enter();
547}
548
549void
550spinlock_exit(void)
551{
552 struct thread *td;
553 register_t msr;
554
555 td = curthread;
556 critical_exit();
557 msr = td->td_md.md_saved_msr;
558 td->td_md.md_spinlock_count--;
559 if (td->td_md.md_spinlock_count == 0)
560 intr_restore(msr);
561}
562
563/* Shutdown the CPU as much as possible. */
564void
565cpu_halt(void)
566{
567
568 mtmsr(mfmsr() & ~(PSL_CE | PSL_EE | PSL_ME | PSL_DE));
569 while (1)
570 ;
571}
572
573int
574ptrace_set_pc(struct thread *td, unsigned long addr)
575{
576 struct trapframe *tf;
577
578 tf = td->td_frame;
579 tf->srr0 = (register_t)addr;
580
581 return (0);
582}
583
584int
585ptrace_single_step(struct thread *td)
586{
587 struct trapframe *tf;
588
589 tf = td->td_frame;
590 tf->srr1 |= PSL_DE;
591 tf->cpu.booke.dbcr0 |= (DBCR0_IDM | DBCR0_IC);
592 return (0);
593}
594
595int
596ptrace_clear_single_step(struct thread *td)
597{
598 struct trapframe *tf;
599
600 tf = td->td_frame;
601 tf->srr1 &= ~PSL_DE;
602 tf->cpu.booke.dbcr0 &= ~(DBCR0_IDM | DBCR0_IC);
603 return (0);
604}
605
606void
607kdb_cpu_clear_singlestep(void)
608{
609 register_t r;
610
611 r = mfspr(SPR_DBCR0);
612 mtspr(SPR_DBCR0, r & ~DBCR0_IC);
613 kdb_frame->srr1 &= ~PSL_DE;
614}
615
616void
617kdb_cpu_set_singlestep(void)
618{
619 register_t r;
620
621 r = mfspr(SPR_DBCR0);
622 mtspr(SPR_DBCR0, r | DBCR0_IC | DBCR0_IDM);
623 kdb_frame->srr1 |= PSL_DE;
624}
625
626void
627bzero(void *buf, size_t len)
628{
629 caddr_t p;
630
631 p = buf;
632
633 while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
634 *p++ = 0;
635 len--;
636 }
637
638 while (len >= sizeof(u_long) * 8) {
639 *(u_long*) p = 0;
640 *((u_long*) p + 1) = 0;
641 *((u_long*) p + 2) = 0;
642 *((u_long*) p + 3) = 0;
643 len -= sizeof(u_long) * 8;
644 *((u_long*) p + 4) = 0;
645 *((u_long*) p + 5) = 0;
646 *((u_long*) p + 6) = 0;
647 *((u_long*) p + 7) = 0;
648 p += sizeof(u_long) * 8;
649 }
650
651 while (len >= sizeof(u_long)) {
652 *(u_long*) p = 0;
653 len -= sizeof(u_long);
654 p += sizeof(u_long);
655 }
656
657 while (len) {
658 *p++ = 0;
659 len--;
660 }
661}
662
|