1/*-
2 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com>
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 Semihalf, Marian Balakowicz <m8@semihalf.com>
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>
|
83
84#include "opt_compat.h"
85#include "opt_kstack_pages.h"
86
87#include <sys/cdefs.h>
88#include <sys/types.h>
89#include <sys/param.h>
90#include <sys/proc.h>
91#include <sys/systm.h>
92#include <sys/time.h>
93#include <sys/bio.h>
94#include <sys/buf.h>
95#include <sys/bus.h>
96#include <sys/cons.h>
97#include <sys/cpu.h>
98#include <sys/kdb.h>
99#include <sys/kernel.h>
100#include <sys/lock.h>
101#include <sys/mutex.h>
102#include <sys/sysctl.h>
103#include <sys/exec.h>
104#include <sys/ktr.h>
105#include <sys/sysproto.h>
106#include <sys/signalvar.h>
107#include <sys/sysent.h>
108#include <sys/imgact.h>
109#include <sys/msgbuf.h>
110#include <sys/ptrace.h>
111
112#include <vm/vm.h>
113#include <vm/pmap.h>
114#include <vm/vm_page.h>
115#include <vm/vm_object.h>
116#include <vm/vm_pager.h>
117
118#include <machine/cpu.h>
119#include <machine/kdb.h>
120#include <machine/reg.h>
121#include <machine/vmparam.h>
122#include <machine/spr.h>
123#include <machine/hid.h>
124#include <machine/psl.h>
125#include <machine/trap.h>
126#include <machine/md_var.h>
127#include <machine/mmuvar.h>
128#include <machine/pmap.h>
129#include <machine/sigframe.h>
130#include <machine/metadata.h>
131#include <machine/bootinfo.h>
132#include <machine/powerpc.h>
133
134#include <sys/linker.h>
135#include <sys/reboot.h>
136
137#include <powerpc/mpc85xx/ocpbus.h>
138#include <powerpc/mpc85xx/mpc85xx.h>
139
140#ifdef DEBUG
141#define debugf(fmt, args...) printf(fmt, ##args)
142#else
143#define debugf(fmt, args...)
144#endif
145
146extern unsigned char kernel_text[];
147extern unsigned char _etext[];
148extern unsigned char _edata[];
149extern unsigned char __bss_start[];
150extern unsigned char __sbss_start[];
151extern unsigned char __sbss_end[];
152extern unsigned char _end[];
153
154extern struct mem_region availmem_regions[];
155extern int availmem_regions_sz;
156
157extern void dcache_enable(void);
158extern void dcache_inval(void);
159extern void icache_enable(void);
160extern void icache_inval(void);
161
162struct kva_md_info kmi;
163struct pcpu __pcpu[MAXCPU];
164struct trapframe frame0;
165int cold = 1;
166long realmem = 0;
167long Maxmem = 0;
168
169struct bootinfo *bootinfo;
170
171char machine[] = "powerpc";
172SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
173
174int cacheline_size = 32;
175
176SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
177 CTLFLAG_RD, &cacheline_size, 0, "");
178
179static void cpu_e500_startup(void *);
180SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_e500_startup, NULL);
181
182void print_kernel_section_addr(void);
183void print_bootinfo(void);
184void print_kenv(void);
185u_int e500_init(u_int32_t, u_int32_t, void *);
186
187static void
188cpu_e500_startup(void *dummy)
189{
190 int indx, size;
191
192 /* Initialise the decrementer-based clock. */
193 decr_init();
194
195 /* Good {morning,afternoon,evening,night}. */
196 cpu_setup(PCPU_GET(cpuid));
197
198 printf("real memory = %ld (%ld MB)\n", ptoa(physmem),
199 ptoa(physmem) / 1048576);
200 realmem = physmem;
201
202 /* Display any holes after the first chunk of extended memory. */
203 if (bootverbose) {
204 printf("Physical memory chunk(s):\n");
205 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
206 size = phys_avail[indx + 1] - phys_avail[indx];
207
208 printf("0x%08x - 0x%08x, %d bytes (%d pages)\n",
209 phys_avail[indx], phys_avail[indx + 1] - 1,
210 size, size / PAGE_SIZE);
211 }
212 }
213
214 vm_ksubmap_init(&kmi);
215
216 printf("avail memory = %ld (%ld MB)\n", ptoa(cnt.v_free_count),
217 ptoa(cnt.v_free_count) / 1048576);
218
219 /* Set up buffers, so they can be used to read disk labels. */
220 bufinit();
221 vm_pager_bufferinit();
222}
223
224static char *
225kenv_next(char *cp)
226{
227
228 if (cp != NULL) {
229 while (*cp != 0)
230 cp++;
231 cp++;
232 if (*cp == 0)
233 cp = NULL;
234 }
235 return (cp);
236}
237
238void
239print_kenv(void)
240{
241 int len;
242 char *cp;
243
244 debugf("loader passed (static) kenv:\n");
245 if (kern_envp == NULL) {
246 debugf(" no env, null ptr\n");
247 return;
248 }
249 debugf(" kern_envp = 0x%08x\n", (u_int32_t)kern_envp);
250
251 len = 0;
252 for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
253 debugf(" %x %s\n", (u_int32_t)cp, cp);
254}
255
256void
257print_bootinfo(void)
258{
259 struct bi_mem_region *mr;
260 struct bi_eth_addr *eth;
261 int i, j;
262
263 debugf("bootinfo:\n");
264 if (bootinfo == NULL) {
265 debugf(" no bootinfo, null ptr\n");
266 return;
267 }
268
269 debugf(" version = 0x%08x\n", bootinfo->bi_version);
270 debugf(" ccsrbar = 0x%08x\n", bootinfo->bi_bar_base);
271 debugf(" cpu_clk = 0x%08x\n", bootinfo->bi_cpu_clk);
272 debugf(" bus_clk = 0x%08x\n", bootinfo->bi_bus_clk);
273
274 debugf(" mem regions:\n");
275 mr = (struct bi_mem_region *)bootinfo->bi_data;
276 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++)
277 debugf(" #%d, base = 0x%08x, size = 0x%08x\n", i,
278 mr->mem_base, mr->mem_size);
279
280 debugf(" eth addresses:\n");
281 eth = (struct bi_eth_addr *)mr;
282 for (i = 0; i < bootinfo->bi_eth_addr_no; i++, eth++) {
283 debugf(" #%d, addr = ", i);
284 for (j = 0; j < 6; j++)
285 debugf("%02x ", eth->mac_addr[j]);
286 debugf("\n");
287 }
288}
289
290void
291print_kernel_section_addr(void)
292{
293
294 debugf("kernel image addresses:\n");
295 debugf(" kernel_text = 0x%08x\n", (uint32_t)kernel_text);
296 debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
297 debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
298 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
299 debugf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
300 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
301 debugf(" _end = 0x%08x\n", (uint32_t)_end);
302}
303
304struct bi_mem_region *
305bootinfo_mr(void)
306{
307
308 return ((struct bi_mem_region *)bootinfo->bi_data);
309}
310
311struct bi_eth_addr *
312bootinfo_eth(void)
313{
314 struct bi_mem_region *mr;
315 struct bi_eth_addr *eth;
316 int i;
317
318 /* Advance to the eth section */
319 mr = bootinfo_mr();
320 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++)
321 ;
322
323 eth = (struct bi_eth_addr *)mr;
324 return (eth);
325}
326
327u_int
328e500_init(u_int32_t startkernel, u_int32_t endkernel, void *mdp)
329{
330 struct pcpu *pc;
331 void *kmdp;
332 vm_offset_t end;
333 struct bi_mem_region *mr;
334 uint32_t csr;
335 int i;
336
337 kmdp = NULL;
338
339 end = endkernel;
340
341 /*
342 * Parse metadata and fetch parameters. This must be done as the first
343 * step as we need bootinfo data to at least init the console
344 */
345 if (mdp != NULL) {
346 preload_metadata = mdp;
347 kmdp = preload_search_by_type("elf kernel");
348 if (kmdp != NULL) {
349 bootinfo = (struct bootinfo *)preload_search_info(kmdp,
350 MODINFO_METADATA | MODINFOMD_BOOTINFO);
351
352 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
353 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
354 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
355 }
356 } else {
357 /*
358 * We should scream but how? - without CCSR bar (in bootinfo)
359 * cannot even output anything...
360 */
361
362 /*
363 * FIXME add return value and handle in the locore so we can
364 * return to the loader maybe? (this seems not very easy to
365 * restore everything as the TLB have all been reprogrammed
366 * in the locore etc...)
367 */
368 while(1);
369 }
370
371 /* Initialize memory regions table */
372 mr = bootinfo_mr();
373 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++) {
374 if (i == MEM_REGIONS)
375 break;
376 availmem_regions[i].mr_start = mr->mem_base;
377 availmem_regions[i].mr_size = mr->mem_size;
378 }
379 availmem_regions_sz = i;
380
381 /* Initialize TLB1 handling */
382 tlb1_init(bootinfo->bi_bar_base);
383
384 /*
385 * Time Base and Decrementer are updated every 8 CCB bus clocks.
386 * HID0[SEL_TBCLK] = 0
387 */
388 decr_config(bootinfo->bi_bus_clk / 8);
389
390 /* Init params/tunables that can be overridden by the loader. */
391 init_param1();
392
393 /* Start initializing proc0 and thread0. */
394 proc_linkup(&proc0, &thread0);
395 thread0.td_frame = &frame0;
396
397 /* Set up per-cpu data and store the pointer in SPR general 0. */
398 pc = &__pcpu[0];
399 pcpu_init(pc, 0, sizeof(struct pcpu));
400 pc->pc_curthread = &thread0;
401 __asm __volatile("mtsprg 0, %0" :: "r"(pc));
402
403 /* Initialize system mutexes. */
404 mutex_init();
405
406 /* Initialize the console before printing anything. */
407 cninit();
408
409 /* Print out some debug info... */
410 debugf("e500_init: console initialized\n");
411 debugf(" arg1 startkernel = 0x%08x\n", startkernel);
412 debugf(" arg2 endkernel = 0x%08x\n", endkernel);
413 debugf(" arg3 mdp = 0x%08x\n", (u_int32_t)mdp);
414 debugf(" end = 0x%08x\n", (u_int32_t)end);
415 debugf(" boothowto = 0x%08x\n", boothowto);
416 debugf(" kernel ccsrbar = 0x%08x\n", CCSRBAR_VA);
417 debugf(" MSR = 0x%08x\n", mfmsr());
418 debugf(" HID0 = 0x%08x\n", mfspr(SPR_HID0));
419 debugf(" HID1 = 0x%08x\n", mfspr(SPR_HID1));
420
421 print_bootinfo();
422 print_kernel_section_addr();
423 print_kenv();
424 //tlb1_print_entries();
425 //tlb1_print_tlbentries();
426
427 kdb_init();
428
429#ifdef KDB
430 if (boothowto & RB_KDB)
431 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
432#endif
433
434 /* Initialise virtual memory. */
435 pmap_mmu_install(MMU_TYPE_BOOKE, 0);
436 pmap_bootstrap(startkernel, end);
437 debugf("MSR = 0x%08x\n", mfmsr());
438 //tlb1_print_entries();
439 //tlb1_print_tlbentries();
440
441 /* Initialize params/tunables that are derived from memsize. */
442 init_param2(physmem);
443
444 /* Finish setting up thread0. */
445 thread0.td_pcb = (struct pcb *)
446 ((thread0.td_kstack + thread0.td_kstack_pages * PAGE_SIZE -
447 sizeof(struct pcb)) & ~15);
448 bzero((void *)thread0.td_pcb, sizeof(struct pcb));
449 pc->pc_curpcb = thread0.td_pcb;
450
451 /* Initialise the message buffer. */
452 msgbufinit(msgbufp, MSGBUF_SIZE);
453
454 /* Enable Machine Check interrupt. */
455 mtmsr(mfmsr() | PSL_ME);
456 isync();
457
458 /* Enable D-cache if applicable */
459 csr = mfspr(SPR_L1CSR0);
460 if ((csr & L1CSR0_DCE) == 0) {
461 dcache_inval();
462 dcache_enable();
463 }
464
465 csr = mfspr(SPR_L1CSR0);
466 if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR0_DCE) == 0)
467 printf("L1 D-cache %sabled\n",
468 (csr & L1CSR0_DCE) ? "en" : "dis");
469
470 /* Enable L1 I-cache if applicable. */
471 csr = mfspr(SPR_L1CSR1);
472 if ((csr & L1CSR1_ICE) == 0) {
473 icache_inval();
474 icache_enable();
475 }
476
477 csr = mfspr(SPR_L1CSR1);
478 if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR1_ICE) == 0)
479 printf("L1 I-cache %sabled\n",
480 (csr & L1CSR1_ICE) ? "en" : "dis");
481
482 debugf("e500_init: SP = 0x%08x\n", ((uintptr_t)thread0.td_pcb - 16) & ~15);
483 debugf("e500_init: e\n");
484
485 return (((uintptr_t)thread0.td_pcb - 16) & ~15);
486}
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
496/* Set set up registers on exec. */
497void
498exec_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
499{
500 struct trapframe *tf;
501 struct ps_strings arginfo;
502
503 tf = trapframe(td);
504 bzero(tf, sizeof *tf);
505 tf->fixreg[1] = -roundup(-stack + 8, 16);
506
507 /*
508 * XXX Machine-independent code has already copied arguments and
509 * XXX environment to userland. Get them back here.
510 */
511 (void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo));
512
513 /*
514 * Set up arguments for _start():
515 * _start(argc, argv, envp, obj, cleanup, ps_strings);
516 *
517 * Notes:
518 * - obj and cleanup are the auxilliary and termination
519 * vectors. They are fixed up by ld.elf_so.
520 * - ps_strings is a NetBSD extention, and will be
521 * ignored by executables which are strictly
522 * compliant with the SVR4 ABI.
523 *
524 * XXX We have to set both regs and retval here due to different
525 * XXX calling convention in trap.c and init_main.c.
526 */
527 /*
528 * XXX PG: these get overwritten in the syscall return code.
529 * execve() should return EJUSTRETURN, like it does on NetBSD.
530 * Emulate by setting the syscall return value cells. The
531 * registers still have to be set for init's fork trampoline.
532 */
533 td->td_retval[0] = arginfo.ps_nargvstr;
534 td->td_retval[1] = (register_t)arginfo.ps_argvstr;
535 tf->fixreg[3] = arginfo.ps_nargvstr;
536 tf->fixreg[4] = (register_t)arginfo.ps_argvstr;
537 tf->fixreg[5] = (register_t)arginfo.ps_envstr;
538 tf->fixreg[6] = 0; /* auxillary vector */
539 tf->fixreg[7] = 0; /* termination vector */
540 tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */
541
542 tf->srr0 = entry;
543 tf->srr1 = PSL_USERSET;
544 td->td_pcb->pcb_flags = 0;
545}
546
547int
548fill_regs(struct thread *td, struct reg *regs)
549{
550 struct trapframe *tf;
551
552 tf = td->td_frame;
553 memcpy(regs, tf, sizeof(struct reg));
554
555 return (0);
556}
557
558int
559fill_fpregs(struct thread *td, struct fpreg *fpregs)
560{
561
562 return (0);
563}
564
565/* Get current clock frequency for the given cpu id. */
566int
567cpu_est_clockrate(int cpu_id, uint64_t *rate)
568{
569
570 return (ENXIO);
571}
572
573/*
574 * Construct a PCB from a trapframe. This is called from kdb_trap() where
575 * we want to start a backtrace from the function that caused us to enter
576 * the debugger. We have the context in the trapframe, but base the trace
577 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
578 * enough for a backtrace.
579 */
580void
581makectx(struct trapframe *tf, struct pcb *pcb)
582{
583
584 pcb->pcb_lr = tf->srr0;
585 pcb->pcb_sp = tf->fixreg[1];
586}
587
588/*
589 * get_mcontext/sendsig helper routine that doesn't touch the
590 * proc lock.
591 */
592static int
593grab_mcontext(struct thread *td, mcontext_t *mcp, int flags)
594{
595 struct pcb *pcb;
596
597 pcb = td->td_pcb;
598 memset(mcp, 0, sizeof(mcontext_t));
599
600 mcp->mc_vers = _MC_VERSION;
601 mcp->mc_flags = 0;
602 memcpy(&mcp->mc_frame, td->td_frame, sizeof(struct trapframe));
603 if (flags & GET_MC_CLEAR_RET) {
604 mcp->mc_gpr[3] = 0;
605 mcp->mc_gpr[4] = 0;
606 }
607
608 /* XXX Altivec context ? */
609
610 mcp->mc_len = sizeof(*mcp);
611 return (0);
612}
613
614int
615get_mcontext(struct thread *td, mcontext_t *mcp, int flags)
616{
617 int error;
618
619 error = grab_mcontext(td, mcp, flags);
620 if (error == 0) {
621 PROC_LOCK(curthread->td_proc);
622 mcp->mc_onstack = sigonstack(td->td_frame->fixreg[1]);
623 PROC_UNLOCK(curthread->td_proc);
624 }
625
626 return (error);
627}
628
629int
630set_mcontext(struct thread *td, const mcontext_t *mcp)
631{
632 struct pcb *pcb;
633 struct trapframe *tf;
634
635 pcb = td->td_pcb;
636 tf = td->td_frame;
637
638 if (mcp->mc_vers != _MC_VERSION || mcp->mc_len != sizeof(*mcp))
639 return (EINVAL);
640
641 memcpy(tf, mcp->mc_frame, sizeof(mcp->mc_frame));
642
643 /* XXX Altivec context? */
644
645 return (0);
646}
647
648int
649sigreturn(struct thread *td, struct sigreturn_args *uap)
650{
651 struct proc *p;
652 ucontext_t uc;
653 int error;
654
655 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
656
657 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
658 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
659 return (EFAULT);
660 }
661
662 error = set_mcontext(td, &uc.uc_mcontext);
663 if (error != 0)
664 return (error);
665
666 p = td->td_proc;
667 PROC_LOCK(p);
668 td->td_sigmask = uc.uc_sigmask;
669 SIG_CANTMASK(td->td_sigmask);
670 signotify(td);
671 PROC_UNLOCK(p);
672
673 CTR3(KTR_SIG, "sigreturn: return td=%p pc=%#x sp=%#x",
674 td, uc.uc_mcontext.mc_srr0, uc.uc_mcontext.mc_gpr[1]);
675
676 return (EJUSTRETURN);
677}
678
679#ifdef COMPAT_FREEBSD4
680int
681freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap)
682{
683
684 return sigreturn(td, (struct sigreturn_args *)uap);
685}
686#endif
687
688/*
689 * cpu_idle
690 *
691 * Set Wait state enable.
692 */
693void
694cpu_idle (int busy)
695{
696 register_t msr;
697
698 msr = mfmsr();
699#ifdef INVARIANTS
700 if ((msr & PSL_EE) != PSL_EE) {
701 struct thread *td = curthread;
702 printf("td msr %x\n", td->td_md.md_saved_msr);
703 panic("ints disabled in idleproc!");
704 }
705#endif
706#if 0
707 /*
708 * Freescale E500 core RM section 6.4.1
709 */
710 msr = msr | PSL_WE;
711
712 __asm__(" msync;"
713 " mtmsr %0;"
714 " isync;"
715 "loop: b loop" :
716 /* no output */ :
717 "r" (msr));
718#endif
719}
720
721int
722cpu_idle_wakeup(int cpu)
723{
724
725 return (0);
726}
727
728void
729spinlock_enter(void)
730{
731 struct thread *td;
732
733 td = curthread;
734 if (td->td_md.md_spinlock_count == 0)
735 td->td_md.md_saved_msr = intr_disable();
736 td->td_md.md_spinlock_count++;
737 critical_enter();
738}
739
740void
741spinlock_exit(void)
742{
743 struct thread *td;
744
745 td = curthread;
746 critical_exit();
747 td->td_md.md_spinlock_count--;
748 if (td->td_md.md_spinlock_count == 0)
749 intr_restore(td->td_md.md_saved_msr);
750}
751
752/* Shutdown the CPU as much as possible. */
753void
754cpu_halt(void)
755{
756
757 mtmsr(mfmsr() & ~(PSL_CE | PSL_EE | PSL_ME | PSL_DE));
758 while (1);
759}
760
761int
762set_regs(struct thread *td, struct reg *regs)
763{
764 struct trapframe *tf;
765
766 tf = td->td_frame;
767 memcpy(tf, regs, sizeof(struct reg));
768 return (0);
769}
770
771int
772fill_dbregs(struct thread *td, struct dbreg *dbregs)
773{
774
775 /* No debug registers on PowerPC */
776 return (ENOSYS);
777}
778
779int
780set_dbregs(struct thread *td, struct dbreg *dbregs)
781{
782
783 /* No debug registers on PowerPC */
784 return (ENOSYS);
785}
786
787int
788set_fpregs(struct thread *td, struct fpreg *fpregs)
789{
790
791 return (0);
792}
793
794int
795ptrace_set_pc(struct thread *td, unsigned long addr)
796{
797 struct trapframe *tf;
798
799 tf = td->td_frame;
800 tf->srr0 = (register_t)addr;
801
802 return (0);
803}
804
805int
806ptrace_single_step(struct thread *td)
807{
808 struct trapframe *tf;
| 83
84#include "opt_compat.h"
85#include "opt_kstack_pages.h"
86
87#include <sys/cdefs.h>
88#include <sys/types.h>
89#include <sys/param.h>
90#include <sys/proc.h>
91#include <sys/systm.h>
92#include <sys/time.h>
93#include <sys/bio.h>
94#include <sys/buf.h>
95#include <sys/bus.h>
96#include <sys/cons.h>
97#include <sys/cpu.h>
98#include <sys/kdb.h>
99#include <sys/kernel.h>
100#include <sys/lock.h>
101#include <sys/mutex.h>
102#include <sys/sysctl.h>
103#include <sys/exec.h>
104#include <sys/ktr.h>
105#include <sys/sysproto.h>
106#include <sys/signalvar.h>
107#include <sys/sysent.h>
108#include <sys/imgact.h>
109#include <sys/msgbuf.h>
110#include <sys/ptrace.h>
111
112#include <vm/vm.h>
113#include <vm/pmap.h>
114#include <vm/vm_page.h>
115#include <vm/vm_object.h>
116#include <vm/vm_pager.h>
117
118#include <machine/cpu.h>
119#include <machine/kdb.h>
120#include <machine/reg.h>
121#include <machine/vmparam.h>
122#include <machine/spr.h>
123#include <machine/hid.h>
124#include <machine/psl.h>
125#include <machine/trap.h>
126#include <machine/md_var.h>
127#include <machine/mmuvar.h>
128#include <machine/pmap.h>
129#include <machine/sigframe.h>
130#include <machine/metadata.h>
131#include <machine/bootinfo.h>
132#include <machine/powerpc.h>
133
134#include <sys/linker.h>
135#include <sys/reboot.h>
136
137#include <powerpc/mpc85xx/ocpbus.h>
138#include <powerpc/mpc85xx/mpc85xx.h>
139
140#ifdef DEBUG
141#define debugf(fmt, args...) printf(fmt, ##args)
142#else
143#define debugf(fmt, args...)
144#endif
145
146extern unsigned char kernel_text[];
147extern unsigned char _etext[];
148extern unsigned char _edata[];
149extern unsigned char __bss_start[];
150extern unsigned char __sbss_start[];
151extern unsigned char __sbss_end[];
152extern unsigned char _end[];
153
154extern struct mem_region availmem_regions[];
155extern int availmem_regions_sz;
156
157extern void dcache_enable(void);
158extern void dcache_inval(void);
159extern void icache_enable(void);
160extern void icache_inval(void);
161
162struct kva_md_info kmi;
163struct pcpu __pcpu[MAXCPU];
164struct trapframe frame0;
165int cold = 1;
166long realmem = 0;
167long Maxmem = 0;
168
169struct bootinfo *bootinfo;
170
171char machine[] = "powerpc";
172SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
173
174int cacheline_size = 32;
175
176SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
177 CTLFLAG_RD, &cacheline_size, 0, "");
178
179static void cpu_e500_startup(void *);
180SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_e500_startup, NULL);
181
182void print_kernel_section_addr(void);
183void print_bootinfo(void);
184void print_kenv(void);
185u_int e500_init(u_int32_t, u_int32_t, void *);
186
187static void
188cpu_e500_startup(void *dummy)
189{
190 int indx, size;
191
192 /* Initialise the decrementer-based clock. */
193 decr_init();
194
195 /* Good {morning,afternoon,evening,night}. */
196 cpu_setup(PCPU_GET(cpuid));
197
198 printf("real memory = %ld (%ld MB)\n", ptoa(physmem),
199 ptoa(physmem) / 1048576);
200 realmem = physmem;
201
202 /* Display any holes after the first chunk of extended memory. */
203 if (bootverbose) {
204 printf("Physical memory chunk(s):\n");
205 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
206 size = phys_avail[indx + 1] - phys_avail[indx];
207
208 printf("0x%08x - 0x%08x, %d bytes (%d pages)\n",
209 phys_avail[indx], phys_avail[indx + 1] - 1,
210 size, size / PAGE_SIZE);
211 }
212 }
213
214 vm_ksubmap_init(&kmi);
215
216 printf("avail memory = %ld (%ld MB)\n", ptoa(cnt.v_free_count),
217 ptoa(cnt.v_free_count) / 1048576);
218
219 /* Set up buffers, so they can be used to read disk labels. */
220 bufinit();
221 vm_pager_bufferinit();
222}
223
224static char *
225kenv_next(char *cp)
226{
227
228 if (cp != NULL) {
229 while (*cp != 0)
230 cp++;
231 cp++;
232 if (*cp == 0)
233 cp = NULL;
234 }
235 return (cp);
236}
237
238void
239print_kenv(void)
240{
241 int len;
242 char *cp;
243
244 debugf("loader passed (static) kenv:\n");
245 if (kern_envp == NULL) {
246 debugf(" no env, null ptr\n");
247 return;
248 }
249 debugf(" kern_envp = 0x%08x\n", (u_int32_t)kern_envp);
250
251 len = 0;
252 for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
253 debugf(" %x %s\n", (u_int32_t)cp, cp);
254}
255
256void
257print_bootinfo(void)
258{
259 struct bi_mem_region *mr;
260 struct bi_eth_addr *eth;
261 int i, j;
262
263 debugf("bootinfo:\n");
264 if (bootinfo == NULL) {
265 debugf(" no bootinfo, null ptr\n");
266 return;
267 }
268
269 debugf(" version = 0x%08x\n", bootinfo->bi_version);
270 debugf(" ccsrbar = 0x%08x\n", bootinfo->bi_bar_base);
271 debugf(" cpu_clk = 0x%08x\n", bootinfo->bi_cpu_clk);
272 debugf(" bus_clk = 0x%08x\n", bootinfo->bi_bus_clk);
273
274 debugf(" mem regions:\n");
275 mr = (struct bi_mem_region *)bootinfo->bi_data;
276 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++)
277 debugf(" #%d, base = 0x%08x, size = 0x%08x\n", i,
278 mr->mem_base, mr->mem_size);
279
280 debugf(" eth addresses:\n");
281 eth = (struct bi_eth_addr *)mr;
282 for (i = 0; i < bootinfo->bi_eth_addr_no; i++, eth++) {
283 debugf(" #%d, addr = ", i);
284 for (j = 0; j < 6; j++)
285 debugf("%02x ", eth->mac_addr[j]);
286 debugf("\n");
287 }
288}
289
290void
291print_kernel_section_addr(void)
292{
293
294 debugf("kernel image addresses:\n");
295 debugf(" kernel_text = 0x%08x\n", (uint32_t)kernel_text);
296 debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
297 debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
298 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
299 debugf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
300 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
301 debugf(" _end = 0x%08x\n", (uint32_t)_end);
302}
303
304struct bi_mem_region *
305bootinfo_mr(void)
306{
307
308 return ((struct bi_mem_region *)bootinfo->bi_data);
309}
310
311struct bi_eth_addr *
312bootinfo_eth(void)
313{
314 struct bi_mem_region *mr;
315 struct bi_eth_addr *eth;
316 int i;
317
318 /* Advance to the eth section */
319 mr = bootinfo_mr();
320 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++)
321 ;
322
323 eth = (struct bi_eth_addr *)mr;
324 return (eth);
325}
326
327u_int
328e500_init(u_int32_t startkernel, u_int32_t endkernel, void *mdp)
329{
330 struct pcpu *pc;
331 void *kmdp;
332 vm_offset_t end;
333 struct bi_mem_region *mr;
334 uint32_t csr;
335 int i;
336
337 kmdp = NULL;
338
339 end = endkernel;
340
341 /*
342 * Parse metadata and fetch parameters. This must be done as the first
343 * step as we need bootinfo data to at least init the console
344 */
345 if (mdp != NULL) {
346 preload_metadata = mdp;
347 kmdp = preload_search_by_type("elf kernel");
348 if (kmdp != NULL) {
349 bootinfo = (struct bootinfo *)preload_search_info(kmdp,
350 MODINFO_METADATA | MODINFOMD_BOOTINFO);
351
352 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
353 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
354 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
355 }
356 } else {
357 /*
358 * We should scream but how? - without CCSR bar (in bootinfo)
359 * cannot even output anything...
360 */
361
362 /*
363 * FIXME add return value and handle in the locore so we can
364 * return to the loader maybe? (this seems not very easy to
365 * restore everything as the TLB have all been reprogrammed
366 * in the locore etc...)
367 */
368 while(1);
369 }
370
371 /* Initialize memory regions table */
372 mr = bootinfo_mr();
373 for (i = 0; i < bootinfo->bi_mem_reg_no; i++, mr++) {
374 if (i == MEM_REGIONS)
375 break;
376 availmem_regions[i].mr_start = mr->mem_base;
377 availmem_regions[i].mr_size = mr->mem_size;
378 }
379 availmem_regions_sz = i;
380
381 /* Initialize TLB1 handling */
382 tlb1_init(bootinfo->bi_bar_base);
383
384 /*
385 * Time Base and Decrementer are updated every 8 CCB bus clocks.
386 * HID0[SEL_TBCLK] = 0
387 */
388 decr_config(bootinfo->bi_bus_clk / 8);
389
390 /* Init params/tunables that can be overridden by the loader. */
391 init_param1();
392
393 /* Start initializing proc0 and thread0. */
394 proc_linkup(&proc0, &thread0);
395 thread0.td_frame = &frame0;
396
397 /* Set up per-cpu data and store the pointer in SPR general 0. */
398 pc = &__pcpu[0];
399 pcpu_init(pc, 0, sizeof(struct pcpu));
400 pc->pc_curthread = &thread0;
401 __asm __volatile("mtsprg 0, %0" :: "r"(pc));
402
403 /* Initialize system mutexes. */
404 mutex_init();
405
406 /* Initialize the console before printing anything. */
407 cninit();
408
409 /* Print out some debug info... */
410 debugf("e500_init: console initialized\n");
411 debugf(" arg1 startkernel = 0x%08x\n", startkernel);
412 debugf(" arg2 endkernel = 0x%08x\n", endkernel);
413 debugf(" arg3 mdp = 0x%08x\n", (u_int32_t)mdp);
414 debugf(" end = 0x%08x\n", (u_int32_t)end);
415 debugf(" boothowto = 0x%08x\n", boothowto);
416 debugf(" kernel ccsrbar = 0x%08x\n", CCSRBAR_VA);
417 debugf(" MSR = 0x%08x\n", mfmsr());
418 debugf(" HID0 = 0x%08x\n", mfspr(SPR_HID0));
419 debugf(" HID1 = 0x%08x\n", mfspr(SPR_HID1));
420
421 print_bootinfo();
422 print_kernel_section_addr();
423 print_kenv();
424 //tlb1_print_entries();
425 //tlb1_print_tlbentries();
426
427 kdb_init();
428
429#ifdef KDB
430 if (boothowto & RB_KDB)
431 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
432#endif
433
434 /* Initialise virtual memory. */
435 pmap_mmu_install(MMU_TYPE_BOOKE, 0);
436 pmap_bootstrap(startkernel, end);
437 debugf("MSR = 0x%08x\n", mfmsr());
438 //tlb1_print_entries();
439 //tlb1_print_tlbentries();
440
441 /* Initialize params/tunables that are derived from memsize. */
442 init_param2(physmem);
443
444 /* Finish setting up thread0. */
445 thread0.td_pcb = (struct pcb *)
446 ((thread0.td_kstack + thread0.td_kstack_pages * PAGE_SIZE -
447 sizeof(struct pcb)) & ~15);
448 bzero((void *)thread0.td_pcb, sizeof(struct pcb));
449 pc->pc_curpcb = thread0.td_pcb;
450
451 /* Initialise the message buffer. */
452 msgbufinit(msgbufp, MSGBUF_SIZE);
453
454 /* Enable Machine Check interrupt. */
455 mtmsr(mfmsr() | PSL_ME);
456 isync();
457
458 /* Enable D-cache if applicable */
459 csr = mfspr(SPR_L1CSR0);
460 if ((csr & L1CSR0_DCE) == 0) {
461 dcache_inval();
462 dcache_enable();
463 }
464
465 csr = mfspr(SPR_L1CSR0);
466 if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR0_DCE) == 0)
467 printf("L1 D-cache %sabled\n",
468 (csr & L1CSR0_DCE) ? "en" : "dis");
469
470 /* Enable L1 I-cache if applicable. */
471 csr = mfspr(SPR_L1CSR1);
472 if ((csr & L1CSR1_ICE) == 0) {
473 icache_inval();
474 icache_enable();
475 }
476
477 csr = mfspr(SPR_L1CSR1);
478 if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR1_ICE) == 0)
479 printf("L1 I-cache %sabled\n",
480 (csr & L1CSR1_ICE) ? "en" : "dis");
481
482 debugf("e500_init: SP = 0x%08x\n", ((uintptr_t)thread0.td_pcb - 16) & ~15);
483 debugf("e500_init: e\n");
484
485 return (((uintptr_t)thread0.td_pcb - 16) & ~15);
486}
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
496/* Set set up registers on exec. */
497void
498exec_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
499{
500 struct trapframe *tf;
501 struct ps_strings arginfo;
502
503 tf = trapframe(td);
504 bzero(tf, sizeof *tf);
505 tf->fixreg[1] = -roundup(-stack + 8, 16);
506
507 /*
508 * XXX Machine-independent code has already copied arguments and
509 * XXX environment to userland. Get them back here.
510 */
511 (void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo));
512
513 /*
514 * Set up arguments for _start():
515 * _start(argc, argv, envp, obj, cleanup, ps_strings);
516 *
517 * Notes:
518 * - obj and cleanup are the auxilliary and termination
519 * vectors. They are fixed up by ld.elf_so.
520 * - ps_strings is a NetBSD extention, and will be
521 * ignored by executables which are strictly
522 * compliant with the SVR4 ABI.
523 *
524 * XXX We have to set both regs and retval here due to different
525 * XXX calling convention in trap.c and init_main.c.
526 */
527 /*
528 * XXX PG: these get overwritten in the syscall return code.
529 * execve() should return EJUSTRETURN, like it does on NetBSD.
530 * Emulate by setting the syscall return value cells. The
531 * registers still have to be set for init's fork trampoline.
532 */
533 td->td_retval[0] = arginfo.ps_nargvstr;
534 td->td_retval[1] = (register_t)arginfo.ps_argvstr;
535 tf->fixreg[3] = arginfo.ps_nargvstr;
536 tf->fixreg[4] = (register_t)arginfo.ps_argvstr;
537 tf->fixreg[5] = (register_t)arginfo.ps_envstr;
538 tf->fixreg[6] = 0; /* auxillary vector */
539 tf->fixreg[7] = 0; /* termination vector */
540 tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */
541
542 tf->srr0 = entry;
543 tf->srr1 = PSL_USERSET;
544 td->td_pcb->pcb_flags = 0;
545}
546
547int
548fill_regs(struct thread *td, struct reg *regs)
549{
550 struct trapframe *tf;
551
552 tf = td->td_frame;
553 memcpy(regs, tf, sizeof(struct reg));
554
555 return (0);
556}
557
558int
559fill_fpregs(struct thread *td, struct fpreg *fpregs)
560{
561
562 return (0);
563}
564
565/* Get current clock frequency for the given cpu id. */
566int
567cpu_est_clockrate(int cpu_id, uint64_t *rate)
568{
569
570 return (ENXIO);
571}
572
573/*
574 * Construct a PCB from a trapframe. This is called from kdb_trap() where
575 * we want to start a backtrace from the function that caused us to enter
576 * the debugger. We have the context in the trapframe, but base the trace
577 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
578 * enough for a backtrace.
579 */
580void
581makectx(struct trapframe *tf, struct pcb *pcb)
582{
583
584 pcb->pcb_lr = tf->srr0;
585 pcb->pcb_sp = tf->fixreg[1];
586}
587
588/*
589 * get_mcontext/sendsig helper routine that doesn't touch the
590 * proc lock.
591 */
592static int
593grab_mcontext(struct thread *td, mcontext_t *mcp, int flags)
594{
595 struct pcb *pcb;
596
597 pcb = td->td_pcb;
598 memset(mcp, 0, sizeof(mcontext_t));
599
600 mcp->mc_vers = _MC_VERSION;
601 mcp->mc_flags = 0;
602 memcpy(&mcp->mc_frame, td->td_frame, sizeof(struct trapframe));
603 if (flags & GET_MC_CLEAR_RET) {
604 mcp->mc_gpr[3] = 0;
605 mcp->mc_gpr[4] = 0;
606 }
607
608 /* XXX Altivec context ? */
609
610 mcp->mc_len = sizeof(*mcp);
611 return (0);
612}
613
614int
615get_mcontext(struct thread *td, mcontext_t *mcp, int flags)
616{
617 int error;
618
619 error = grab_mcontext(td, mcp, flags);
620 if (error == 0) {
621 PROC_LOCK(curthread->td_proc);
622 mcp->mc_onstack = sigonstack(td->td_frame->fixreg[1]);
623 PROC_UNLOCK(curthread->td_proc);
624 }
625
626 return (error);
627}
628
629int
630set_mcontext(struct thread *td, const mcontext_t *mcp)
631{
632 struct pcb *pcb;
633 struct trapframe *tf;
634
635 pcb = td->td_pcb;
636 tf = td->td_frame;
637
638 if (mcp->mc_vers != _MC_VERSION || mcp->mc_len != sizeof(*mcp))
639 return (EINVAL);
640
641 memcpy(tf, mcp->mc_frame, sizeof(mcp->mc_frame));
642
643 /* XXX Altivec context? */
644
645 return (0);
646}
647
648int
649sigreturn(struct thread *td, struct sigreturn_args *uap)
650{
651 struct proc *p;
652 ucontext_t uc;
653 int error;
654
655 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
656
657 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
658 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
659 return (EFAULT);
660 }
661
662 error = set_mcontext(td, &uc.uc_mcontext);
663 if (error != 0)
664 return (error);
665
666 p = td->td_proc;
667 PROC_LOCK(p);
668 td->td_sigmask = uc.uc_sigmask;
669 SIG_CANTMASK(td->td_sigmask);
670 signotify(td);
671 PROC_UNLOCK(p);
672
673 CTR3(KTR_SIG, "sigreturn: return td=%p pc=%#x sp=%#x",
674 td, uc.uc_mcontext.mc_srr0, uc.uc_mcontext.mc_gpr[1]);
675
676 return (EJUSTRETURN);
677}
678
679#ifdef COMPAT_FREEBSD4
680int
681freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap)
682{
683
684 return sigreturn(td, (struct sigreturn_args *)uap);
685}
686#endif
687
688/*
689 * cpu_idle
690 *
691 * Set Wait state enable.
692 */
693void
694cpu_idle (int busy)
695{
696 register_t msr;
697
698 msr = mfmsr();
699#ifdef INVARIANTS
700 if ((msr & PSL_EE) != PSL_EE) {
701 struct thread *td = curthread;
702 printf("td msr %x\n", td->td_md.md_saved_msr);
703 panic("ints disabled in idleproc!");
704 }
705#endif
706#if 0
707 /*
708 * Freescale E500 core RM section 6.4.1
709 */
710 msr = msr | PSL_WE;
711
712 __asm__(" msync;"
713 " mtmsr %0;"
714 " isync;"
715 "loop: b loop" :
716 /* no output */ :
717 "r" (msr));
718#endif
719}
720
721int
722cpu_idle_wakeup(int cpu)
723{
724
725 return (0);
726}
727
728void
729spinlock_enter(void)
730{
731 struct thread *td;
732
733 td = curthread;
734 if (td->td_md.md_spinlock_count == 0)
735 td->td_md.md_saved_msr = intr_disable();
736 td->td_md.md_spinlock_count++;
737 critical_enter();
738}
739
740void
741spinlock_exit(void)
742{
743 struct thread *td;
744
745 td = curthread;
746 critical_exit();
747 td->td_md.md_spinlock_count--;
748 if (td->td_md.md_spinlock_count == 0)
749 intr_restore(td->td_md.md_saved_msr);
750}
751
752/* Shutdown the CPU as much as possible. */
753void
754cpu_halt(void)
755{
756
757 mtmsr(mfmsr() & ~(PSL_CE | PSL_EE | PSL_ME | PSL_DE));
758 while (1);
759}
760
761int
762set_regs(struct thread *td, struct reg *regs)
763{
764 struct trapframe *tf;
765
766 tf = td->td_frame;
767 memcpy(tf, regs, sizeof(struct reg));
768 return (0);
769}
770
771int
772fill_dbregs(struct thread *td, struct dbreg *dbregs)
773{
774
775 /* No debug registers on PowerPC */
776 return (ENOSYS);
777}
778
779int
780set_dbregs(struct thread *td, struct dbreg *dbregs)
781{
782
783 /* No debug registers on PowerPC */
784 return (ENOSYS);
785}
786
787int
788set_fpregs(struct thread *td, struct fpreg *fpregs)
789{
790
791 return (0);
792}
793
794int
795ptrace_set_pc(struct thread *td, unsigned long addr)
796{
797 struct trapframe *tf;
798
799 tf = td->td_frame;
800 tf->srr0 = (register_t)addr;
801
802 return (0);
803}
804
805int
806ptrace_single_step(struct thread *td)
807{
808 struct trapframe *tf;
|
827 return (0);
828}
829
830void
831kdb_cpu_clear_singlestep(void)
832{
833 register_t r;
834
835 r = mfspr(SPR_DBCR0);
836 mtspr(SPR_DBCR0, r & ~DBCR0_IC);
837 kdb_frame->srr1 &= ~PSL_DE;
838}
839
840void
841kdb_cpu_set_singlestep(void)
842{
843 register_t r;
844
845 r = mfspr(SPR_DBCR0);
846 mtspr(SPR_DBCR0, r | DBCR0_IC | DBCR0_IDM);
847 kdb_frame->srr1 |= PSL_DE;
848}
849
850void
851sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
852{
853 struct trapframe *tf;
854 struct sigframe *sfp;
855 struct sigacts *psp;
856 struct sigframe sf;
857 struct thread *td;
858 struct proc *p;
859 int oonstack, rndfsize;
860 int sig, code;
861
862 td = curthread;
863 p = td->td_proc;
864 PROC_LOCK_ASSERT(p, MA_OWNED);
865 sig = ksi->ksi_signo;
866 code = ksi->ksi_code;
867 psp = p->p_sigacts;
868 mtx_assert(&psp->ps_mtx, MA_OWNED);
869 tf = td->td_frame;
870 oonstack = sigonstack(tf->fixreg[1]);
871
872 rndfsize = ((sizeof(sf) + 15) / 16) * 16;
873
874 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
875 catcher, sig);
876
877 /*
878 * Save user context
879 */
880 memset(&sf, 0, sizeof(sf));
881 grab_mcontext(td, &sf.sf_uc.uc_mcontext, 0);
882 sf.sf_uc.uc_sigmask = *mask;
883 sf.sf_uc.uc_stack = td->td_sigstk;
884 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)
885 ? ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
886
887 sf.sf_uc.uc_mcontext.mc_onstack = (oonstack) ? 1 : 0;
888
889 /*
890 * Allocate and validate space for the signal handler context.
891 */
892 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
893 SIGISMEMBER(psp->ps_sigonstack, sig)) {
894 sfp = (struct sigframe *)((caddr_t)td->td_sigstk.ss_sp +
895 td->td_sigstk.ss_size - rndfsize);
896 } else {
897 sfp = (struct sigframe *)(tf->fixreg[1] - rndfsize);
898 }
899
900 /*
901 * Translate the signal if appropriate (Linux emu ?)
902 */
903 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize)
904 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
905
906 /*
907 * Save the floating-point state, if necessary, then copy it.
908 */
909 /* XXX */
910
911 /*
912 * Set up the registers to return to sigcode.
913 *
914 * r1/sp - sigframe ptr
915 * lr - sig function, dispatched to by blrl in trampoline
916 * r3 - sig number
917 * r4 - SIGINFO ? &siginfo : exception code
918 * r5 - user context
919 * srr0 - trampoline function addr
920 */
921 tf->lr = (register_t)catcher;
922 tf->fixreg[1] = (register_t)sfp;
923 tf->fixreg[FIRSTARG] = sig;
924 tf->fixreg[FIRSTARG+2] = (register_t)&sfp->sf_uc;
925 if (SIGISMEMBER(psp->ps_siginfo, sig)) {
926 /*
927 * Signal handler installed with SA_SIGINFO.
928 */
929 tf->fixreg[FIRSTARG+1] = (register_t)&sfp->sf_si;
930
931 /*
932 * Fill siginfo structure.
933 */
934 sf.sf_si = ksi->ksi_info;
935 sf.sf_si.si_signo = sig;
936 sf.sf_si.si_addr = (void *) ((tf->exc == EXC_DSI) ?
937 tf->cpu.booke.dear : tf->srr0);
938 } else {
939 /* Old FreeBSD-style arguments. */
940 tf->fixreg[FIRSTARG+1] = code;
941 tf->fixreg[FIRSTARG+3] = (tf->exc == EXC_DSI) ?
942 tf->cpu.booke.dear : tf->srr0;
943 }
944 mtx_unlock(&psp->ps_mtx);
945 PROC_UNLOCK(p);
946
947 tf->srr0 = (register_t)(PS_STRINGS - *(p->p_sysent->sv_szsigcode));
948
949 /*
950 * copy the frame out to userland.
951 */
952 if (copyout((caddr_t)&sf, (caddr_t)sfp, sizeof(sf)) != 0) {
953 /*
954 * Process has trashed its stack. Kill it.
955 */
956 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
957 PROC_LOCK(p);
958 sigexit(td, SIGILL);
959 }
960
961 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td,
962 tf->srr0, tf->fixreg[1]);
963
964 PROC_LOCK(p);
965 mtx_lock(&psp->ps_mtx);
966}
967
968void
969bzero(void *buf, size_t len)
970{
971 caddr_t p;
972
973 p = buf;
974
975 while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
976 *p++ = 0;
977 len--;
978 }
979
980 while (len >= sizeof(u_long) * 8) {
981 *(u_long*) p = 0;
982 *((u_long*) p + 1) = 0;
983 *((u_long*) p + 2) = 0;
984 *((u_long*) p + 3) = 0;
985 len -= sizeof(u_long) * 8;
986 *((u_long*) p + 4) = 0;
987 *((u_long*) p + 5) = 0;
988 *((u_long*) p + 6) = 0;
989 *((u_long*) p + 7) = 0;
990 p += sizeof(u_long) * 8;
991 }
992
993 while (len >= sizeof(u_long)) {
994 *(u_long*) p = 0;
995 len -= sizeof(u_long);
996 p += sizeof(u_long);
997 }
998
999 while (len) {
1000 *p++ = 0;
1001 len--;
1002 }
1003}
1004
1005/*
1006 * XXX what is the better/proper place for this routine?
1007 */
1008int
1009mem_valid(vm_offset_t addr, int len)
1010{
1011
1012 return (1);
1013}
| 824 return (0);
825}
826
827void
828kdb_cpu_clear_singlestep(void)
829{
830 register_t r;
831
832 r = mfspr(SPR_DBCR0);
833 mtspr(SPR_DBCR0, r & ~DBCR0_IC);
834 kdb_frame->srr1 &= ~PSL_DE;
835}
836
837void
838kdb_cpu_set_singlestep(void)
839{
840 register_t r;
841
842 r = mfspr(SPR_DBCR0);
843 mtspr(SPR_DBCR0, r | DBCR0_IC | DBCR0_IDM);
844 kdb_frame->srr1 |= PSL_DE;
845}
846
847void
848sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
849{
850 struct trapframe *tf;
851 struct sigframe *sfp;
852 struct sigacts *psp;
853 struct sigframe sf;
854 struct thread *td;
855 struct proc *p;
856 int oonstack, rndfsize;
857 int sig, code;
858
859 td = curthread;
860 p = td->td_proc;
861 PROC_LOCK_ASSERT(p, MA_OWNED);
862 sig = ksi->ksi_signo;
863 code = ksi->ksi_code;
864 psp = p->p_sigacts;
865 mtx_assert(&psp->ps_mtx, MA_OWNED);
866 tf = td->td_frame;
867 oonstack = sigonstack(tf->fixreg[1]);
868
869 rndfsize = ((sizeof(sf) + 15) / 16) * 16;
870
871 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
872 catcher, sig);
873
874 /*
875 * Save user context
876 */
877 memset(&sf, 0, sizeof(sf));
878 grab_mcontext(td, &sf.sf_uc.uc_mcontext, 0);
879 sf.sf_uc.uc_sigmask = *mask;
880 sf.sf_uc.uc_stack = td->td_sigstk;
881 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)
882 ? ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
883
884 sf.sf_uc.uc_mcontext.mc_onstack = (oonstack) ? 1 : 0;
885
886 /*
887 * Allocate and validate space for the signal handler context.
888 */
889 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
890 SIGISMEMBER(psp->ps_sigonstack, sig)) {
891 sfp = (struct sigframe *)((caddr_t)td->td_sigstk.ss_sp +
892 td->td_sigstk.ss_size - rndfsize);
893 } else {
894 sfp = (struct sigframe *)(tf->fixreg[1] - rndfsize);
895 }
896
897 /*
898 * Translate the signal if appropriate (Linux emu ?)
899 */
900 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize)
901 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
902
903 /*
904 * Save the floating-point state, if necessary, then copy it.
905 */
906 /* XXX */
907
908 /*
909 * Set up the registers to return to sigcode.
910 *
911 * r1/sp - sigframe ptr
912 * lr - sig function, dispatched to by blrl in trampoline
913 * r3 - sig number
914 * r4 - SIGINFO ? &siginfo : exception code
915 * r5 - user context
916 * srr0 - trampoline function addr
917 */
918 tf->lr = (register_t)catcher;
919 tf->fixreg[1] = (register_t)sfp;
920 tf->fixreg[FIRSTARG] = sig;
921 tf->fixreg[FIRSTARG+2] = (register_t)&sfp->sf_uc;
922 if (SIGISMEMBER(psp->ps_siginfo, sig)) {
923 /*
924 * Signal handler installed with SA_SIGINFO.
925 */
926 tf->fixreg[FIRSTARG+1] = (register_t)&sfp->sf_si;
927
928 /*
929 * Fill siginfo structure.
930 */
931 sf.sf_si = ksi->ksi_info;
932 sf.sf_si.si_signo = sig;
933 sf.sf_si.si_addr = (void *) ((tf->exc == EXC_DSI) ?
934 tf->cpu.booke.dear : tf->srr0);
935 } else {
936 /* Old FreeBSD-style arguments. */
937 tf->fixreg[FIRSTARG+1] = code;
938 tf->fixreg[FIRSTARG+3] = (tf->exc == EXC_DSI) ?
939 tf->cpu.booke.dear : tf->srr0;
940 }
941 mtx_unlock(&psp->ps_mtx);
942 PROC_UNLOCK(p);
943
944 tf->srr0 = (register_t)(PS_STRINGS - *(p->p_sysent->sv_szsigcode));
945
946 /*
947 * copy the frame out to userland.
948 */
949 if (copyout((caddr_t)&sf, (caddr_t)sfp, sizeof(sf)) != 0) {
950 /*
951 * Process has trashed its stack. Kill it.
952 */
953 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
954 PROC_LOCK(p);
955 sigexit(td, SIGILL);
956 }
957
958 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td,
959 tf->srr0, tf->fixreg[1]);
960
961 PROC_LOCK(p);
962 mtx_lock(&psp->ps_mtx);
963}
964
965void
966bzero(void *buf, size_t len)
967{
968 caddr_t p;
969
970 p = buf;
971
972 while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
973 *p++ = 0;
974 len--;
975 }
976
977 while (len >= sizeof(u_long) * 8) {
978 *(u_long*) p = 0;
979 *((u_long*) p + 1) = 0;
980 *((u_long*) p + 2) = 0;
981 *((u_long*) p + 3) = 0;
982 len -= sizeof(u_long) * 8;
983 *((u_long*) p + 4) = 0;
984 *((u_long*) p + 5) = 0;
985 *((u_long*) p + 6) = 0;
986 *((u_long*) p + 7) = 0;
987 p += sizeof(u_long) * 8;
988 }
989
990 while (len >= sizeof(u_long)) {
991 *(u_long*) p = 0;
992 len -= sizeof(u_long);
993 p += sizeof(u_long);
994 }
995
996 while (len) {
997 *p++ = 0;
998 len--;
999 }
1000}
1001
1002/*
1003 * XXX what is the better/proper place for this routine?
1004 */
1005int
1006mem_valid(vm_offset_t addr, int len)
1007{
1008
1009 return (1);
1010}
|