sys/arm64/arm64/machdep.c

   1 /*-
   2  * Copyright (c) 2014 Andrew Turner
   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 AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27
  28 #include "opt_platform.h"
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/buf.h>
  36 #include <sys/bus.h>
  37 #include <sys/cons.h>
  38 #include <sys/cpu.h>
  39 #include <sys/efi.h>
  40 #include <sys/exec.h>
  41 #include <sys/imgact.h>
  42 #include <sys/kdb.h>
  43 #include <sys/kernel.h>
  44 #include <sys/limits.h>
  45 #include <sys/linker.h>
  46 #include <sys/msgbuf.h>
  47 #include <sys/pcpu.h>
  48 #include <sys/proc.h>
  49 #include <sys/ptrace.h>
  50 #include <sys/reboot.h>
  51 #include <sys/rwlock.h>
  52 #include <sys/sched.h>
  53 #include <sys/signalvar.h>
  54 #include <sys/syscallsubr.h>
  55 #include <sys/sysent.h>
  56 #include <sys/sysproto.h>
  57 #include <sys/ucontext.h>
  58
  59 #include <vm/vm.h>
  60 #include <vm/vm_kern.h>
  61 #include <vm/vm_object.h>
  62 #include <vm/vm_page.h>
  63 #include <vm/pmap.h>
  64 #include <vm/vm_map.h>
  65 #include <vm/vm_pager.h>
  66
  67 #include <machine/armreg.h>
  68 #include <machine/cpu.h>
  69 #include <machine/debug_monitor.h>
  70 #include <machine/kdb.h>
  71 #include <machine/devmap.h>
  72 #include <machine/machdep.h>
  73 #include <machine/metadata.h>
  74 #include <machine/pcb.h>
  75 #include <machine/reg.h>
  76 #include <machine/vmparam.h>
  77
  78 #ifdef VFP
  79 #include <machine/vfp.h>
  80 #endif
  81
  82 #ifdef FDT
  83 #include <dev/fdt/fdt_common.h>
  84 #include <dev/ofw/openfirm.h>
  85 #endif
  86
  87 struct pcpu __pcpu[MAXCPU];
  88
  89 static struct trapframe proc0_tf;
  90
  91 vm_paddr_t phys_avail[PHYS_AVAIL_SIZE + 2];
  92 vm_paddr_t dump_avail[PHYS_AVAIL_SIZE + 2];
  93
  94 int early_boot = 1;
  95 int cold = 1;
  96 long realmem = 0;
  97 long Maxmem = 0;
  98
  99 #define PHYSMAP_SIZE    (2 * (VM_PHYSSEG_MAX - 1))
 100 vm_paddr_t physmap[PHYSMAP_SIZE];
 101 u_int physmap_idx;
 102
 103 struct kva_md_info kmi;
 104
 105 int64_t dcache_line_size;       /* The minimum D cache line size */
 106 int64_t icache_line_size;       /* The minimum I cache line size */
 107 int64_t idcache_line_size;      /* The minimum cache line size */
 108
 109 static void
 110 cpu_startup(void *dummy)
 111 {
 112
 113         identify_cpu();
 114
 115         vm_ksubmap_init(&kmi);
 116         bufinit();
 117         vm_pager_bufferinit();
 118 }
 119
 120 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
 121
 122 void
 123 bzero(void *buf, size_t len)
 124 {
 125         uint8_t *p;
 126
 127         p = buf;
 128         while(len-- > 0)
 129                 *p++ = 0;
 130 }
 131
 132 int
 133 fill_regs(struct thread *td, struct reg *regs)
 134 {
 135         struct trapframe *frame;
 136
 137         frame = td->td_frame;
 138         regs->sp = frame->tf_sp;
 139         regs->lr = frame->tf_lr;
 140         regs->elr = frame->tf_elr;
 141         regs->spsr = frame->tf_spsr;
 142
 143         memcpy(regs->x, frame->tf_x, sizeof(regs->x));
 144
 145         return (0);
 146 }
 147
 148 int
 149 set_regs(struct thread *td, struct reg *regs)
 150 {
 151         struct trapframe *frame;
 152
 153         frame = td->td_frame;
 154         frame->tf_sp = regs->sp;
 155         frame->tf_lr = regs->lr;
 156         frame->tf_elr = regs->elr;
 157         frame->tf_spsr = regs->spsr;
 158
 159         memcpy(frame->tf_x, regs->x, sizeof(frame->tf_x));
 160
 161         return (0);
 162 }
 163
 164 int
 165 fill_fpregs(struct thread *td, struct fpreg *regs)
 166 {
 167 #ifdef VFP
 168         struct pcb *pcb;
 169
 170         pcb = td->td_pcb;
 171         if ((pcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
 172                 /*
 173                  * If we have just been running VFP instructions we will
 174                  * need to save the state to memcpy it below.
 175                  */
 176                 vfp_save_state(td);
 177
 178                 memcpy(regs->fp_q, pcb->pcb_vfp, sizeof(regs->fp_q));
 179                 regs->fp_cr = pcb->pcb_fpcr;
 180                 regs->fp_sr = pcb->pcb_fpsr;
 181         } else
 182 #endif
 183                 memset(regs->fp_q, 0, sizeof(regs->fp_q));
 184         return (0);
 185 }
 186
 187 int
 188 set_fpregs(struct thread *td, struct fpreg *regs)
 189 {
 190 #ifdef VFP
 191         struct pcb *pcb;
 192
 193         pcb = td->td_pcb;
 194         memcpy(pcb->pcb_vfp, regs->fp_q, sizeof(regs->fp_q));
 195         pcb->pcb_fpcr = regs->fp_cr;
 196         pcb->pcb_fpsr = regs->fp_sr;
 197 #endif
 198         return (0);
 199 }
 200
 201 int
 202 fill_dbregs(struct thread *td, struct dbreg *regs)
 203 {
 204
 205         panic("fill_dbregs");
 206 }
 207
 208 int
 209 set_dbregs(struct thread *td, struct dbreg *regs)
 210 {
 211
 212         panic("set_dbregs");
 213 }
 214
 215 int
 216 ptrace_set_pc(struct thread *td, u_long addr)
 217 {
 218
 219         panic("ptrace_set_pc");
 220         return (0);
 221 }
 222
 223 int
 224 ptrace_single_step(struct thread *td)
 225 {
 226
 227         /* TODO; */
 228         return (0);
 229 }
 230
 231 int
 232 ptrace_clear_single_step(struct thread *td)
 233 {
 234
 235         /* TODO; */
 236         return (0);
 237 }
 238
 239 void
 240 exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
 241 {
 242         struct trapframe *tf = td->td_frame;
 243
 244         memset(tf, 0, sizeof(struct trapframe));
 245
 246         tf->tf_sp = stack;
 247         tf->tf_lr = imgp->entry_addr;
 248         tf->tf_elr = imgp->entry_addr;
 249 }
 250
 251 /* Sanity check these are the same size, they will be memcpy'd to and fro */
 252 CTASSERT(sizeof(((struct trapframe *)0)->tf_x) ==
 253     sizeof((struct gpregs *)0)->gp_x);
 254 CTASSERT(sizeof(((struct trapframe *)0)->tf_x) ==
 255     sizeof((struct reg *)0)->x);
 256
 257 int
 258 get_mcontext(struct thread *td, mcontext_t *mcp, int clear_ret)
 259 {
 260         struct trapframe *tf = td->td_frame;
 261
 262         if (clear_ret & GET_MC_CLEAR_RET)
 263                 mcp->mc_gpregs.gp_x[0] = 0;
 264         else
 265                 mcp->mc_gpregs.gp_x[0] = tf->tf_x[0];
 266
 267         memcpy(&mcp->mc_gpregs.gp_x[1], &tf->tf_x[1],
 268             sizeof(mcp->mc_gpregs.gp_x[1]) * (nitems(mcp->mc_gpregs.gp_x) - 1));
 269
 270         mcp->mc_gpregs.gp_sp = tf->tf_sp;
 271         mcp->mc_gpregs.gp_lr = tf->tf_lr;
 272         mcp->mc_gpregs.gp_elr = tf->tf_elr;
 273         mcp->mc_gpregs.gp_spsr = tf->tf_spsr;
 274
 275         return (0);
 276 }
 277
 278 int
 279 set_mcontext(struct thread *td, mcontext_t *mcp)
 280 {
 281         struct trapframe *tf = td->td_frame;
 282
 283         memcpy(tf->tf_x, mcp->mc_gpregs.gp_x, sizeof(tf->tf_x));
 284
 285         tf->tf_sp = mcp->mc_gpregs.gp_sp;
 286         tf->tf_lr = mcp->mc_gpregs.gp_lr;
 287         tf->tf_elr = mcp->mc_gpregs.gp_elr;
 288         tf->tf_spsr = mcp->mc_gpregs.gp_spsr;
 289
 290         return (0);
 291 }
 292
 293 static void
 294 get_fpcontext(struct thread *td, mcontext_t *mcp)
 295 {
 296 #ifdef VFP
 297         struct pcb *curpcb;
 298
 299         critical_enter();
 300
 301         curpcb = curthread->td_pcb;
 302
 303         if ((curpcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
 304                 /*
 305                  * If we have just been running VFP instructions we will
 306                  * need to save the state to memcpy it below.
 307                  */
 308                 vfp_save_state(td);
 309
 310                 memcpy(mcp->mc_fpregs.fp_q, curpcb->pcb_vfp,
 311                     sizeof(mcp->mc_fpregs));
 312                 mcp->mc_fpregs.fp_cr = curpcb->pcb_fpcr;
 313                 mcp->mc_fpregs.fp_sr = curpcb->pcb_fpsr;
 314                 mcp->mc_fpregs.fp_flags = curpcb->pcb_fpflags;
 315                 mcp->mc_flags |= _MC_FP_VALID;
 316         }
 317
 318         critical_exit();
 319 #endif
 320 }
 321
 322 static void
 323 set_fpcontext(struct thread *td, mcontext_t *mcp)
 324 {
 325 #ifdef VFP
 326         struct pcb *curpcb;
 327
 328         critical_enter();
 329
 330         if ((mcp->mc_flags & _MC_FP_VALID) != 0) {
 331                 curpcb = curthread->td_pcb;
 332
 333                 /*
 334                  * Discard any vfp state for the current thread, we
 335                  * are about to override it.
 336                  */
 337                 vfp_discard(td);
 338
 339                 memcpy(curpcb->pcb_vfp, mcp->mc_fpregs.fp_q,
 340                     sizeof(mcp->mc_fpregs));
 341                 curpcb->pcb_fpcr = mcp->mc_fpregs.fp_cr;
 342                 curpcb->pcb_fpsr = mcp->mc_fpregs.fp_sr;
 343                 curpcb->pcb_fpflags = mcp->mc_fpregs.fp_flags;
 344         }
 345
 346         critical_exit();
 347 #endif
 348 }
 349
 350 void
 351 cpu_idle(int busy)
 352 {
 353
 354         spinlock_enter();
 355         if (!busy)
 356                 cpu_idleclock();
 357         if (!sched_runnable())
 358                 __asm __volatile(
 359                     "dsb sy \n"
 360                     "wfi    \n");
 361         if (!busy)
 362                 cpu_activeclock();
 363         spinlock_exit();
 364 }
 365
 366 void
 367 cpu_halt(void)
 368 {
 369
 370         panic("cpu_halt");
 371 }
 372
 373 /*
 374  * Flush the D-cache for non-DMA I/O so that the I-cache can
 375  * be made coherent later.
 376  */
 377 void
 378 cpu_flush_dcache(void *ptr, size_t len)
 379 {
 380
 381         /* TBD */
 382 }
 383
 384 /* Get current clock frequency for the given CPU ID. */
 385 int
 386 cpu_est_clockrate(int cpu_id, uint64_t *rate)
 387 {
 388
 389         panic("cpu_est_clockrate");
 390 }
 391
 392 void
 393 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
 394 {
 395
 396         pcpu->pc_acpi_id = 0xffffffff;
 397 }
 398
 399 void
 400 spinlock_enter(void)
 401 {
 402         struct thread *td;
 403         register_t daif;
 404
 405         td = curthread;
 406         if (td->td_md.md_spinlock_count == 0) {
 407                 daif = intr_disable();
 408                 td->td_md.md_spinlock_count = 1;
 409                 td->td_md.md_saved_daif = daif;
 410         } else
 411                 td->td_md.md_spinlock_count++;
 412         critical_enter();
 413 }
 414
 415 void
 416 spinlock_exit(void)
 417 {
 418         struct thread *td;
 419         register_t daif;
 420
 421         td = curthread;
 422         critical_exit();
 423         daif = td->td_md.md_saved_daif;
 424         td->td_md.md_spinlock_count--;
 425         if (td->td_md.md_spinlock_count == 0)
 426                 intr_restore(daif);
 427 }
 428
 429 #ifndef _SYS_SYSPROTO_H_
 430 struct sigreturn_args {
 431         ucontext_t *ucp;
 432 };
 433 #endif
 434
 435 int
 436 sys_sigreturn(struct thread *td, struct sigreturn_args *uap)
 437 {
 438         ucontext_t uc;
 439         uint32_t spsr;
 440
 441         if (uap == NULL)
 442                 return (EFAULT);
 443         if (copyin(uap->sigcntxp, &uc, sizeof(uc)))
 444                 return (EFAULT);
 445
 446         spsr = uc.uc_mcontext.mc_gpregs.gp_spsr;
 447         if ((spsr & PSR_M_MASK) != PSR_M_EL0t ||
 448             (spsr & (PSR_F | PSR_I | PSR_A | PSR_D)) != 0)
 449                 return (EINVAL);
 450
 451         set_mcontext(td, &uc.uc_mcontext);
 452         set_fpcontext(td, &uc.uc_mcontext);
 453
 454         /* Restore signal mask. */
 455         kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0);
 456
 457         return (EJUSTRETURN);
 458 }
 459
 460 /*
 461  * Construct a PCB from a trapframe. This is called from kdb_trap() where
 462  * we want to start a backtrace from the function that caused us to enter
 463  * the debugger. We have the context in the trapframe, but base the trace
 464  * on the PCB. The PCB doesn't have to be perfect, as long as it contains
 465  * enough for a backtrace.
 466  */
 467 void
 468 makectx(struct trapframe *tf, struct pcb *pcb)
 469 {
 470         int i;
 471
 472         for (i = 0; i < PCB_LR; i++)
 473                 pcb->pcb_x[i] = tf->tf_x[i];
 474
 475         pcb->pcb_x[PCB_LR] = tf->tf_lr;
 476         pcb->pcb_pc = tf->tf_elr;
 477         pcb->pcb_sp = tf->tf_sp;
 478 }
 479
 480 void
 481 sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 482 {
 483         struct thread *td;
 484         struct proc *p;
 485         struct trapframe *tf;
 486         struct sigframe *fp, frame;
 487         struct sigacts *psp;
 488         int code, onstack, sig;
 489
 490         td = curthread;
 491         p = td->td_proc;
 492         PROC_LOCK_ASSERT(p, MA_OWNED);
 493
 494         sig = ksi->ksi_signo;
 495         code = ksi->ksi_code;
 496         psp = p->p_sigacts;
 497         mtx_assert(&psp->ps_mtx, MA_OWNED);
 498
 499         tf = td->td_frame;
 500         onstack = sigonstack(tf->tf_sp);
 501
 502         CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
 503             catcher, sig);
 504
 505         /* Allocate and validate space for the signal handler context. */
 506         if ((td->td_pflags & TDP_ALTSTACK) != 0 && !onstack &&
 507             SIGISMEMBER(psp->ps_sigonstack, sig)) {
 508                 fp = (struct sigframe *)(td->td_sigstk.ss_sp +
 509                     td->td_sigstk.ss_size);
 510 #if defined(COMPAT_43)
 511                 td->td_sigstk.ss_flags |= SS_ONSTACK;
 512 #endif
 513         } else {
 514                 fp = (struct sigframe *)td->td_frame->tf_sp;
 515         }
 516
 517         /* Make room, keeping the stack aligned */
 518         fp--;
 519         fp = (struct sigframe *)STACKALIGN(fp);
 520
 521         /* Fill in the frame to copy out */
 522         get_mcontext(td, &frame.sf_uc.uc_mcontext, 0);
 523         get_fpcontext(td, &frame.sf_uc.uc_mcontext);
 524         frame.sf_si = ksi->ksi_info;
 525         frame.sf_uc.uc_sigmask = *mask;
 526         frame.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) ?
 527             ((onstack) ? SS_ONSTACK : 0) : SS_DISABLE;
 528         frame.sf_uc.uc_stack = td->td_sigstk;
 529         mtx_unlock(&psp->ps_mtx);
 530         PROC_UNLOCK(td->td_proc);
 531
 532         /* Copy the sigframe out to the user's stack. */
 533         if (copyout(&frame, fp, sizeof(*fp)) != 0) {
 534                 /* Process has trashed its stack. Kill it. */
 535                 CTR2(KTR_SIG, "sendsig: sigexit td=%p fp=%p", td, fp);
 536                 PROC_LOCK(p);
 537                 sigexit(td, SIGILL);
 538         }
 539
 540         tf->tf_x[0]= sig;
 541         tf->tf_x[1] = (register_t)&fp->sf_si;
 542         tf->tf_x[2] = (register_t)&fp->sf_uc;
 543
 544         tf->tf_elr = (register_t)catcher;
 545         tf->tf_sp = (register_t)fp;
 546         tf->tf_lr = (register_t)(PS_STRINGS - *(p->p_sysent->sv_szsigcode));
 547
 548         CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td, tf->tf_elr,
 549             tf->tf_sp);
 550
 551         PROC_LOCK(p);
 552         mtx_lock(&psp->ps_mtx);
 553 }
 554
 555 static void
 556 init_proc0(vm_offset_t kstack)
 557 {
 558         struct pcpu *pcpup = &__pcpu[0];
 559
 560         proc_linkup0(&proc0, &thread0);
 561         thread0.td_kstack = kstack;
 562         thread0.td_pcb = (struct pcb *)(thread0.td_kstack) - 1;
 563         thread0.td_pcb->pcb_fpflags = 0;
 564         thread0.td_pcb->pcb_vfpcpu = UINT_MAX;
 565         thread0.td_frame = &proc0_tf;
 566         pcpup->pc_curpcb = thread0.td_pcb;
 567 }
 568
 569 typedef struct {
 570         uint32_t type;
 571         uint64_t phys_start;
 572         uint64_t virt_start;
 573         uint64_t num_pages;
 574         uint64_t attr;
 575 } EFI_MEMORY_DESCRIPTOR;
 576
 577 static int
 578 add_physmap_entry(uint64_t base, uint64_t length, vm_paddr_t *physmap,
 579     u_int *physmap_idxp)
 580 {
 581         u_int i, insert_idx, _physmap_idx;
 582
 583         _physmap_idx = *physmap_idxp;
 584
 585         if (length == 0)
 586                 return (1);
 587
 588         /*
 589          * Find insertion point while checking for overlap.  Start off by
 590          * assuming the new entry will be added to the end.
 591          */
 592         insert_idx = _physmap_idx;
 593         for (i = 0; i <= _physmap_idx; i += 2) {
 594                 if (base < physmap[i + 1]) {
 595                         if (base + length <= physmap[i]) {
 596                                 insert_idx = i;
 597                                 break;
 598                         }
 599                         if (boothowto & RB_VERBOSE)
 600                                 printf(
 601                     "Overlapping memory regions, ignoring second region\n");
 602                         return (1);
 603                 }
 604         }
 605
 606         /* See if we can prepend to the next entry. */
 607         if (insert_idx <= _physmap_idx &&
 608             base + length == physmap[insert_idx]) {
 609                 physmap[insert_idx] = base;
 610                 return (1);
 611         }
 612
 613         /* See if we can append to the previous entry. */
 614         if (insert_idx > 0 && base == physmap[insert_idx - 1]) {
 615                 physmap[insert_idx - 1] += length;
 616                 return (1);
 617         }
 618
 619         _physmap_idx += 2;
 620         *physmap_idxp = _physmap_idx;
 621         if (_physmap_idx == PHYSMAP_SIZE) {
 622                 printf(
 623                 "Too many segments in the physical address map, giving up\n");
 624                 return (0);
 625         }
 626
 627         /*
 628          * Move the last 'N' entries down to make room for the new
 629          * entry if needed.
 630          */
 631         for (i = _physmap_idx; i > insert_idx; i -= 2) {
 632                 physmap[i] = physmap[i - 2];
 633                 physmap[i + 1] = physmap[i - 1];
 634         }
 635
 636         /* Insert the new entry. */
 637         physmap[insert_idx] = base;
 638         physmap[insert_idx + 1] = base + length;
 639         return (1);
 640 }
 641
 642 #define efi_next_descriptor(ptr, size) \
 643         ((struct efi_md *)(((uint8_t *) ptr) + size))
 644
 645 static void
 646 add_efi_map_entries(struct efi_map_header *efihdr, vm_paddr_t *physmap,
 647     u_int *physmap_idxp)
 648 {
 649         struct efi_md *map, *p;
 650         const char *type;
 651         size_t efisz;
 652         int ndesc, i;
 653
 654         static const char *types[] = {
 655                 "Reserved",
 656                 "LoaderCode",
 657                 "LoaderData",
 658                 "BootServicesCode",
 659                 "BootServicesData",
 660                 "RuntimeServicesCode",
 661                 "RuntimeServicesData",
 662                 "ConventionalMemory",
 663                 "UnusableMemory",
 664                 "ACPIReclaimMemory",
 665                 "ACPIMemoryNVS",
 666                 "MemoryMappedIO",
 667                 "MemoryMappedIOPortSpace",
 668                 "PalCode"
 669         };
 670
 671         /*
 672          * Memory map data provided by UEFI via the GetMemoryMap
 673          * Boot Services API.
 674          */
 675         efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
 676         map = (struct efi_md *)((uint8_t *)efihdr + efisz);
 677
 678         if (efihdr->descriptor_size == 0)
 679                 return;
 680         ndesc = efihdr->memory_size / efihdr->descriptor_size;
 681
 682         if (boothowto & RB_VERBOSE)
 683                 printf("%23s %12s %12s %8s %4s\n",
 684                     "Type", "Physical", "Virtual", "#Pages", "Attr");
 685
 686         for (i = 0, p = map; i < ndesc; i++,
 687             p = efi_next_descriptor(p, efihdr->descriptor_size)) {
 688                 if (boothowto & RB_VERBOSE) {
 689                         if (p->md_type <= EFI_MD_TYPE_PALCODE)
 690                                 type = types[p->md_type];
 691                         else
 692                                 type = "<INVALID>";
 693                         printf("%23s %012lx %12p %08lx ", type, p->md_phys,
 694                             p->md_virt, p->md_pages);
 695                         if (p->md_attr & EFI_MD_ATTR_UC)
 696                                 printf("UC ");
 697                         if (p->md_attr & EFI_MD_ATTR_WC)
 698                                 printf("WC ");
 699                         if (p->md_attr & EFI_MD_ATTR_WT)
 700                                 printf("WT ");
 701                         if (p->md_attr & EFI_MD_ATTR_WB)
 702                                 printf("WB ");
 703                         if (p->md_attr & EFI_MD_ATTR_UCE)
 704                                 printf("UCE ");
 705                         if (p->md_attr & EFI_MD_ATTR_WP)
 706                                 printf("WP ");
 707                         if (p->md_attr & EFI_MD_ATTR_RP)
 708                                 printf("RP ");
 709                         if (p->md_attr & EFI_MD_ATTR_XP)
 710                                 printf("XP ");
 711                         if (p->md_attr & EFI_MD_ATTR_RT)
 712                                 printf("RUNTIME");
 713                         printf("\n");
 714                 }
 715
 716                 switch (p->md_type) {
 717                 case EFI_MD_TYPE_CODE:
 718                 case EFI_MD_TYPE_DATA:
 719                 case EFI_MD_TYPE_BS_CODE:
 720                 case EFI_MD_TYPE_BS_DATA:
 721                 case EFI_MD_TYPE_FREE:
 722                         /*
 723                          * We're allowed to use any entry with these types.
 724                          */
 725                         break;
 726                 default:
 727                         continue;
 728                 }
 729
 730                 if (!add_physmap_entry(p->md_phys, (p->md_pages * PAGE_SIZE),
 731                     physmap, physmap_idxp))
 732                         break;
 733         }
 734 }
 735
 736 #ifdef FDT
 737 static void
 738 try_load_dtb(caddr_t kmdp)
 739 {
 740         vm_offset_t dtbp;
 741
 742         dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
 743         if (dtbp == (vm_offset_t)NULL) {
 744                 printf("ERROR loading DTB\n");
 745                 return;
 746         }
 747
 748         if (OF_install(OFW_FDT, 0) == FALSE)
 749                 panic("Cannot install FDT");
 750
 751         if (OF_init((void *)dtbp) != 0)
 752                 panic("OF_init failed with the found device tree");
 753 }
 754 #endif
 755
 756 static void
 757 cache_setup(void)
 758 {
 759         int dcache_line_shift, icache_line_shift;
 760         uint32_t ctr_el0;
 761
 762         ctr_el0 = READ_SPECIALREG(ctr_el0);
 763
 764         /* Read the log2 words in each D cache line */
 765         dcache_line_shift = CTR_DLINE_SIZE(ctr_el0);
 766         /* Get the D cache line size */
 767         dcache_line_size = sizeof(int) << dcache_line_shift;
 768
 769         /* And the same for the I cache */
 770         icache_line_shift = CTR_ILINE_SIZE(ctr_el0);
 771         icache_line_size = sizeof(int) << icache_line_shift;
 772
 773         idcache_line_size = MIN(dcache_line_size, icache_line_size);
 774 }
 775
 776 void
 777 initarm(struct arm64_bootparams *abp)
 778 {
 779         struct efi_map_header *efihdr;
 780         struct pcpu *pcpup;
 781         vm_offset_t lastaddr;
 782         caddr_t kmdp;
 783         vm_paddr_t mem_len;
 784         int i;
 785
 786         /* Set the module data location */
 787         preload_metadata = (caddr_t)(uintptr_t)(abp->modulep);
 788
 789         /* Find the kernel address */
 790         kmdp = preload_search_by_type("elf kernel");
 791         if (kmdp == NULL)
 792                 kmdp = preload_search_by_type("elf64 kernel");
 793
 794         boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
 795         kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
 796
 797 #ifdef FDT
 798         try_load_dtb(kmdp);
 799 #endif
 800
 801         /* Find the address to start allocating from */
 802         lastaddr = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
 803
 804         /* Load the physical memory ranges */
 805         physmap_idx = 0;
 806         efihdr = (struct efi_map_header *)preload_search_info(kmdp,
 807             MODINFO_METADATA | MODINFOMD_EFI_MAP);
 808         add_efi_map_entries(efihdr, physmap, &physmap_idx);
 809
 810         /* Print the memory map */
 811         mem_len = 0;
 812         for (i = 0; i < physmap_idx; i += 2)
 813                 mem_len += physmap[i + 1] - physmap[i];
 814
 815         /* Set the pcpu data, this is needed by pmap_bootstrap */
 816         pcpup = &__pcpu[0];
 817         pcpu_init(pcpup, 0, sizeof(struct pcpu));
 818
 819         /*
 820          * Set the pcpu pointer with a backup in tpidr_el1 to be
 821          * loaded when entering the kernel from userland.
 822          */
 823         __asm __volatile(
 824             "mov x18, %0 \n"
 825             "msr tpidr_el1, %0" :: "r"(pcpup));
 826
 827         PCPU_SET(curthread, &thread0);
 828
 829         /* Do basic tuning, hz etc */
 830         init_param1();
 831
 832         cache_setup();
 833
 834         /* Bootstrap enough of pmap  to enter the kernel proper */
 835         pmap_bootstrap(abp->kern_l1pt, KERNBASE - abp->kern_delta,
 836             lastaddr - KERNBASE);
 837
 838         arm_devmap_bootstrap(0, NULL);
 839
 840         cninit();
 841
 842         init_proc0(abp->kern_stack);
 843         msgbufinit(msgbufp, msgbufsize);
 844         mutex_init();
 845         init_param2(physmem);
 846
 847         dbg_monitor_init();
 848         kdb_init();
 849
 850         early_boot = 0;
 851 }
 852