2 * Copyright (c) 2014 Andrew Turner
3 * Copyright (c) 2015-2017 Ruslan Bukin <br@bsdpad.com>
6 * Portions of this software were developed by SRI International and the
7 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
8 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
10 * Portions of this software were developed by the University of Cambridge
11 * Computer Laboratory as part of the CTSRD Project, with support from the
12 * UK Higher Education Innovation Fund (HEIF).
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include "opt_platform.h"
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
48 #include <sys/imgact.h>
50 #include <sys/kernel.h>
52 #include <sys/limits.h>
53 #include <sys/linker.h>
54 #include <sys/msgbuf.h>
57 #include <sys/ptrace.h>
58 #include <sys/reboot.h>
59 #include <sys/rwlock.h>
60 #include <sys/sched.h>
61 #include <sys/signalvar.h>
62 #include <sys/syscallsubr.h>
63 #include <sys/sysent.h>
64 #include <sys/sysproto.h>
65 #include <sys/tslog.h>
66 #include <sys/ucontext.h>
67 #include <sys/vmmeter.h>
70 #include <vm/vm_kern.h>
71 #include <vm/vm_object.h>
72 #include <vm/vm_page.h>
74 #include <vm/vm_map.h>
75 #include <vm/vm_pager.h>
77 #include <machine/riscvreg.h>
78 #include <machine/cpu.h>
79 #include <machine/kdb.h>
80 #include <machine/machdep.h>
81 #include <machine/pcb.h>
82 #include <machine/reg.h>
83 #include <machine/trap.h>
84 #include <machine/vmparam.h>
85 #include <machine/intr.h>
86 #include <machine/sbi.h>
88 #include <machine/asm.h>
91 #include <machine/fpe.h>
95 #include <dev/fdt/fdt_common.h>
96 #include <dev/ofw/openfirm.h>
99 struct pcpu __pcpu[MAXCPU];
101 static struct trapframe proc0_tf;
103 vm_paddr_t phys_avail[PHYS_AVAIL_SIZE + 2];
104 vm_paddr_t dump_avail[PHYS_AVAIL_SIZE + 2];
111 #define DTB_SIZE_MAX (1024 * 1024)
113 #define PHYSMAP_SIZE (2 * (VM_PHYSSEG_MAX - 1))
114 vm_paddr_t physmap[PHYSMAP_SIZE];
117 struct kva_md_info kmi;
119 int64_t dcache_line_size; /* The minimum D cache line size */
120 int64_t icache_line_size; /* The minimum I cache line size */
121 int64_t idcache_line_size; /* The minimum cache line size */
123 uint32_t boot_hart; /* The hart we booted on. */
127 extern int *initstack_end;
130 cpu_startup(void *dummy)
135 printf("real memory = %ju (%ju MB)\n", ptoa((uintmax_t)realmem),
136 ptoa((uintmax_t)realmem) / (1024 * 1024));
139 * Display any holes after the first chunk of extended memory.
144 printf("Physical memory chunk(s):\n");
145 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
148 size = phys_avail[indx + 1] - phys_avail[indx];
150 "0x%016jx - 0x%016jx, %ju bytes (%ju pages)\n",
151 (uintmax_t)phys_avail[indx],
152 (uintmax_t)phys_avail[indx + 1] - 1,
153 (uintmax_t)size, (uintmax_t)size / PAGE_SIZE);
157 vm_ksubmap_init(&kmi);
159 printf("avail memory = %ju (%ju MB)\n",
160 ptoa((uintmax_t)vm_free_count()),
161 ptoa((uintmax_t)vm_free_count()) / (1024 * 1024));
164 vm_pager_bufferinit();
167 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
170 cpu_idle_wakeup(int cpu)
177 fill_regs(struct thread *td, struct reg *regs)
179 struct trapframe *frame;
181 frame = td->td_frame;
182 regs->sepc = frame->tf_sepc;
183 regs->sstatus = frame->tf_sstatus;
184 regs->ra = frame->tf_ra;
185 regs->sp = frame->tf_sp;
186 regs->gp = frame->tf_gp;
187 regs->tp = frame->tf_tp;
189 memcpy(regs->t, frame->tf_t, sizeof(regs->t));
190 memcpy(regs->s, frame->tf_s, sizeof(regs->s));
191 memcpy(regs->a, frame->tf_a, sizeof(regs->a));
197 set_regs(struct thread *td, struct reg *regs)
199 struct trapframe *frame;
201 frame = td->td_frame;
202 frame->tf_sepc = regs->sepc;
203 frame->tf_ra = regs->ra;
204 frame->tf_sp = regs->sp;
205 frame->tf_gp = regs->gp;
206 frame->tf_tp = regs->tp;
208 memcpy(frame->tf_t, regs->t, sizeof(frame->tf_t));
209 memcpy(frame->tf_s, regs->s, sizeof(frame->tf_s));
210 memcpy(frame->tf_a, regs->a, sizeof(frame->tf_a));
216 fill_fpregs(struct thread *td, struct fpreg *regs)
223 if ((pcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
225 * If we have just been running FPE instructions we will
226 * need to save the state to memcpy it below.
231 memcpy(regs->fp_x, pcb->pcb_x, sizeof(regs->fp_x));
232 regs->fp_fcsr = pcb->pcb_fcsr;
235 memset(regs, 0, sizeof(*regs));
241 set_fpregs(struct thread *td, struct fpreg *regs)
244 struct trapframe *frame;
247 frame = td->td_frame;
250 memcpy(pcb->pcb_x, regs->fp_x, sizeof(regs->fp_x));
251 pcb->pcb_fcsr = regs->fp_fcsr;
252 pcb->pcb_fpflags |= PCB_FP_STARTED;
253 frame->tf_sstatus &= ~SSTATUS_FS_MASK;
254 frame->tf_sstatus |= SSTATUS_FS_CLEAN;
261 fill_dbregs(struct thread *td, struct dbreg *regs)
264 panic("fill_dbregs");
268 set_dbregs(struct thread *td, struct dbreg *regs)
275 ptrace_set_pc(struct thread *td, u_long addr)
278 td->td_frame->tf_sepc = addr;
283 ptrace_single_step(struct thread *td)
291 ptrace_clear_single_step(struct thread *td)
299 exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
301 struct trapframe *tf;
307 memset(tf, 0, sizeof(struct trapframe));
310 tf->tf_sp = STACKALIGN(stack);
311 tf->tf_ra = imgp->entry_addr;
312 tf->tf_sepc = imgp->entry_addr;
314 pcb->pcb_fpflags &= ~PCB_FP_STARTED;
317 /* Sanity check these are the same size, they will be memcpy'd to and fro */
318 CTASSERT(sizeof(((struct trapframe *)0)->tf_a) ==
319 sizeof((struct gpregs *)0)->gp_a);
320 CTASSERT(sizeof(((struct trapframe *)0)->tf_s) ==
321 sizeof((struct gpregs *)0)->gp_s);
322 CTASSERT(sizeof(((struct trapframe *)0)->tf_t) ==
323 sizeof((struct gpregs *)0)->gp_t);
324 CTASSERT(sizeof(((struct trapframe *)0)->tf_a) ==
325 sizeof((struct reg *)0)->a);
326 CTASSERT(sizeof(((struct trapframe *)0)->tf_s) ==
327 sizeof((struct reg *)0)->s);
328 CTASSERT(sizeof(((struct trapframe *)0)->tf_t) ==
329 sizeof((struct reg *)0)->t);
331 /* Support for FDT configurations only. */
335 get_mcontext(struct thread *td, mcontext_t *mcp, int clear_ret)
337 struct trapframe *tf = td->td_frame;
339 memcpy(mcp->mc_gpregs.gp_t, tf->tf_t, sizeof(mcp->mc_gpregs.gp_t));
340 memcpy(mcp->mc_gpregs.gp_s, tf->tf_s, sizeof(mcp->mc_gpregs.gp_s));
341 memcpy(mcp->mc_gpregs.gp_a, tf->tf_a, sizeof(mcp->mc_gpregs.gp_a));
343 if (clear_ret & GET_MC_CLEAR_RET) {
344 mcp->mc_gpregs.gp_a[0] = 0;
345 mcp->mc_gpregs.gp_t[0] = 0; /* clear syscall error */
348 mcp->mc_gpregs.gp_ra = tf->tf_ra;
349 mcp->mc_gpregs.gp_sp = tf->tf_sp;
350 mcp->mc_gpregs.gp_gp = tf->tf_gp;
351 mcp->mc_gpregs.gp_tp = tf->tf_tp;
352 mcp->mc_gpregs.gp_sepc = tf->tf_sepc;
353 mcp->mc_gpregs.gp_sstatus = tf->tf_sstatus;
359 set_mcontext(struct thread *td, mcontext_t *mcp)
361 struct trapframe *tf;
365 memcpy(tf->tf_t, mcp->mc_gpregs.gp_t, sizeof(tf->tf_t));
366 memcpy(tf->tf_s, mcp->mc_gpregs.gp_s, sizeof(tf->tf_s));
367 memcpy(tf->tf_a, mcp->mc_gpregs.gp_a, sizeof(tf->tf_a));
369 tf->tf_ra = mcp->mc_gpregs.gp_ra;
370 tf->tf_sp = mcp->mc_gpregs.gp_sp;
371 tf->tf_gp = mcp->mc_gpregs.gp_gp;
372 tf->tf_sepc = mcp->mc_gpregs.gp_sepc;
373 tf->tf_sstatus = mcp->mc_gpregs.gp_sstatus;
379 get_fpcontext(struct thread *td, mcontext_t *mcp)
386 curpcb = curthread->td_pcb;
388 KASSERT(td->td_pcb == curpcb, ("Invalid fpe pcb"));
390 if ((curpcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
392 * If we have just been running FPE instructions we will
393 * need to save the state to memcpy it below.
397 KASSERT((curpcb->pcb_fpflags & ~PCB_FP_USERMASK) == 0,
398 ("Non-userspace FPE flags set in get_fpcontext"));
399 memcpy(mcp->mc_fpregs.fp_x, curpcb->pcb_x,
400 sizeof(mcp->mc_fpregs));
401 mcp->mc_fpregs.fp_fcsr = curpcb->pcb_fcsr;
402 mcp->mc_fpregs.fp_flags = curpcb->pcb_fpflags;
403 mcp->mc_flags |= _MC_FP_VALID;
411 set_fpcontext(struct thread *td, mcontext_t *mcp)
418 if ((mcp->mc_flags & _MC_FP_VALID) != 0) {
419 curpcb = curthread->td_pcb;
420 /* FPE usage is enabled, override registers. */
421 memcpy(curpcb->pcb_x, mcp->mc_fpregs.fp_x,
422 sizeof(mcp->mc_fpregs));
423 curpcb->pcb_fcsr = mcp->mc_fpregs.fp_fcsr;
424 curpcb->pcb_fpflags = mcp->mc_fpregs.fp_flags & PCB_FP_USERMASK;
438 if (!sched_runnable())
453 __asm __volatile("wfi");
457 * Flush the D-cache for non-DMA I/O so that the I-cache can
458 * be made coherent later.
461 cpu_flush_dcache(void *ptr, size_t len)
467 /* Get current clock frequency for the given CPU ID. */
469 cpu_est_clockrate(int cpu_id, uint64_t *rate)
472 panic("cpu_est_clockrate");
476 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
487 if (td->td_md.md_spinlock_count == 0) {
488 reg = intr_disable();
489 td->td_md.md_spinlock_count = 1;
490 td->td_md.md_saved_sstatus_ie = reg;
492 td->td_md.md_spinlock_count++;
500 register_t sstatus_ie;
504 sstatus_ie = td->td_md.md_saved_sstatus_ie;
505 td->td_md.md_spinlock_count--;
506 if (td->td_md.md_spinlock_count == 0)
507 intr_restore(sstatus_ie);
510 #ifndef _SYS_SYSPROTO_H_
511 struct sigreturn_args {
517 sys_sigreturn(struct thread *td, struct sigreturn_args *uap)
525 if (copyin(uap->sigcntxp, &uc, sizeof(uc)))
529 * Make sure the processor mode has not been tampered with and
530 * interrupts have not been disabled.
531 * Supervisor interrupts in user mode are always enabled.
533 sstatus = uc.uc_mcontext.mc_gpregs.gp_sstatus;
534 if ((sstatus & SSTATUS_SPP) != 0)
537 error = set_mcontext(td, &uc.uc_mcontext);
541 set_fpcontext(td, &uc.uc_mcontext);
543 /* Restore signal mask. */
544 kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0);
546 return (EJUSTRETURN);
550 * Construct a PCB from a trapframe. This is called from kdb_trap() where
551 * we want to start a backtrace from the function that caused us to enter
552 * the debugger. We have the context in the trapframe, but base the trace
553 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
554 * enough for a backtrace.
557 makectx(struct trapframe *tf, struct pcb *pcb)
560 memcpy(pcb->pcb_t, tf->tf_t, sizeof(tf->tf_t));
561 memcpy(pcb->pcb_s, tf->tf_s, sizeof(tf->tf_s));
562 memcpy(pcb->pcb_a, tf->tf_a, sizeof(tf->tf_a));
564 pcb->pcb_ra = tf->tf_ra;
565 pcb->pcb_sp = tf->tf_sp;
566 pcb->pcb_gp = tf->tf_gp;
567 pcb->pcb_tp = tf->tf_tp;
568 pcb->pcb_sepc = tf->tf_sepc;
572 sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
574 struct sigframe *fp, frame;
575 struct sysentvec *sysent;
576 struct trapframe *tf;
585 PROC_LOCK_ASSERT(p, MA_OWNED);
587 sig = ksi->ksi_signo;
589 mtx_assert(&psp->ps_mtx, MA_OWNED);
592 onstack = sigonstack(tf->tf_sp);
594 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
597 /* Allocate and validate space for the signal handler context. */
598 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !onstack &&
599 SIGISMEMBER(psp->ps_sigonstack, sig)) {
600 fp = (struct sigframe *)((uintptr_t)td->td_sigstk.ss_sp +
601 td->td_sigstk.ss_size);
603 fp = (struct sigframe *)td->td_frame->tf_sp;
606 /* Make room, keeping the stack aligned */
608 fp = (struct sigframe *)STACKALIGN(fp);
610 /* Fill in the frame to copy out */
611 bzero(&frame, sizeof(frame));
612 get_mcontext(td, &frame.sf_uc.uc_mcontext, 0);
613 get_fpcontext(td, &frame.sf_uc.uc_mcontext);
614 frame.sf_si = ksi->ksi_info;
615 frame.sf_uc.uc_sigmask = *mask;
616 frame.sf_uc.uc_stack = td->td_sigstk;
617 frame.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) != 0 ?
618 (onstack ? SS_ONSTACK : 0) : SS_DISABLE;
619 mtx_unlock(&psp->ps_mtx);
620 PROC_UNLOCK(td->td_proc);
622 /* Copy the sigframe out to the user's stack. */
623 if (copyout(&frame, fp, sizeof(*fp)) != 0) {
624 /* Process has trashed its stack. Kill it. */
625 CTR2(KTR_SIG, "sendsig: sigexit td=%p fp=%p", td, fp);
631 tf->tf_a[1] = (register_t)&fp->sf_si;
632 tf->tf_a[2] = (register_t)&fp->sf_uc;
634 tf->tf_sepc = (register_t)catcher;
635 tf->tf_sp = (register_t)fp;
637 sysent = p->p_sysent;
638 if (sysent->sv_sigcode_base != 0)
639 tf->tf_ra = (register_t)sysent->sv_sigcode_base;
641 tf->tf_ra = (register_t)(sysent->sv_psstrings -
642 *(sysent->sv_szsigcode));
644 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td, tf->tf_sepc,
648 mtx_lock(&psp->ps_mtx);
652 init_proc0(vm_offset_t kstack)
658 proc_linkup0(&proc0, &thread0);
659 thread0.td_kstack = kstack;
660 thread0.td_pcb = (struct pcb *)(thread0.td_kstack) - 1;
661 thread0.td_pcb->pcb_fpflags = 0;
662 thread0.td_frame = &proc0_tf;
663 pcpup->pc_curpcb = thread0.td_pcb;
667 add_physmap_entry(uint64_t base, uint64_t length, vm_paddr_t *physmap,
670 u_int i, insert_idx, _physmap_idx;
672 _physmap_idx = *physmap_idxp;
678 * Find insertion point while checking for overlap. Start off by
679 * assuming the new entry will be added to the end.
681 insert_idx = _physmap_idx;
682 for (i = 0; i <= _physmap_idx; i += 2) {
683 if (base < physmap[i + 1]) {
684 if (base + length <= physmap[i]) {
688 if (boothowto & RB_VERBOSE)
690 "Overlapping memory regions, ignoring second region\n");
695 /* See if we can prepend to the next entry. */
696 if (insert_idx <= _physmap_idx &&
697 base + length == physmap[insert_idx]) {
698 physmap[insert_idx] = base;
702 /* See if we can append to the previous entry. */
703 if (insert_idx > 0 && base == physmap[insert_idx - 1]) {
704 physmap[insert_idx - 1] += length;
709 *physmap_idxp = _physmap_idx;
710 if (_physmap_idx == PHYSMAP_SIZE) {
712 "Too many segments in the physical address map, giving up\n");
717 * Move the last 'N' entries down to make room for the new
720 for (i = _physmap_idx; i > insert_idx; i -= 2) {
721 physmap[i] = physmap[i - 2];
722 physmap[i + 1] = physmap[i - 1];
725 /* Insert the new entry. */
726 physmap[insert_idx] = base;
727 physmap[insert_idx + 1] = base + length;
729 printf("physmap[%d] = 0x%016lx\n", insert_idx, base);
730 printf("physmap[%d] = 0x%016lx\n", insert_idx + 1, base + length);
736 try_load_dtb(caddr_t kmdp, vm_offset_t dtbp)
739 #if defined(FDT_DTB_STATIC)
740 dtbp = (vm_offset_t)&fdt_static_dtb;
743 if (dtbp == (vm_offset_t)NULL) {
744 printf("ERROR loading DTB\n");
748 if (OF_install(OFW_FDT, 0) == FALSE)
749 panic("Cannot install FDT");
751 if (OF_init((void *)dtbp) != 0)
752 panic("OF_init failed with the found device tree");
762 dcache_line_size = 0;
763 icache_line_size = 0;
764 idcache_line_size = 0;
768 * Fake up a boot descriptor table.
769 * RISCVTODO: This needs to be done via loader (when it's available).
772 fake_preload_metadata(struct riscv_bootparams *rvbp __unused)
774 static uint32_t fake_preload[35];
776 vm_offset_t zstart = 0, zend = 0;
778 vm_offset_t lastaddr;
783 fake_preload[i++] = MODINFO_NAME;
784 fake_preload[i++] = strlen("kernel") + 1;
785 strcpy((char*)&fake_preload[i++], "kernel");
787 fake_preload[i++] = MODINFO_TYPE;
788 fake_preload[i++] = strlen("elf64 kernel") + 1;
789 strcpy((char*)&fake_preload[i++], "elf64 kernel");
791 fake_preload[i++] = MODINFO_ADDR;
792 fake_preload[i++] = sizeof(vm_offset_t);
793 *(vm_offset_t *)&fake_preload[i++] =
794 (vm_offset_t)(KERNBASE + KERNENTRY);
796 fake_preload[i++] = MODINFO_SIZE;
797 fake_preload[i++] = sizeof(vm_offset_t);
798 fake_preload[i++] = (vm_offset_t)&end -
799 (vm_offset_t)(KERNBASE + KERNENTRY);
804 if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
805 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM;
806 fake_preload[i++] = sizeof(vm_offset_t);
807 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4);
808 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM;
809 fake_preload[i++] = sizeof(vm_offset_t);
810 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8);
811 lastaddr = *(uint32_t *)(KERNVIRTADDR + 8);
813 zstart = *(uint32_t *)(KERNVIRTADDR + 4);
814 db_fetch_ksymtab(zstart, zend);
818 lastaddr = (vm_offset_t)&end;
819 fake_preload[i++] = 0;
821 preload_metadata = (void *)fake_preload;
827 initriscv(struct riscv_bootparams *rvbp)
829 struct mem_region mem_regions[FDT_MEM_REGIONS];
831 vm_offset_t rstart, rend;
834 vm_offset_t lastaddr;
839 TSRAW(&thread0, TS_ENTER, __func__, NULL);
841 /* Set the pcpu data, this is needed by pmap_bootstrap */
843 pcpu_init(pcpup, 0, sizeof(struct pcpu));
844 pcpup->pc_hart = boot_hart;
846 /* Set the pcpu pointer */
847 __asm __volatile("mv tp, %0" :: "r"(pcpup));
849 PCPU_SET(curthread, &thread0);
851 /* Set the module data location */
852 lastaddr = fake_preload_metadata(rvbp);
854 /* Find the kernel address */
855 kmdp = preload_search_by_type("elf kernel");
857 kmdp = preload_search_by_type("elf64 kernel");
859 boothowto = RB_VERBOSE | RB_SINGLE;
860 boothowto = RB_VERBOSE;
865 try_load_dtb(kmdp, rvbp->dtbp_virt);
868 /* Load the physical memory ranges */
872 /* Grab physical memory regions information from device tree. */
873 if (fdt_get_mem_regions(mem_regions, &mem_regions_sz, NULL) != 0)
874 panic("Cannot get physical memory regions");
877 e = s + DTB_SIZE_MAX;
879 for (i = 0; i < mem_regions_sz; i++) {
880 rstart = mem_regions[i].mr_start;
881 rend = (mem_regions[i].mr_start + mem_regions[i].mr_size);
883 if ((rstart < s) && (rend > e)) {
884 /* Exclude DTB region. */
885 add_physmap_entry(rstart, (s - rstart), physmap, &physmap_idx);
886 add_physmap_entry(e, (rend - e), physmap, &physmap_idx);
888 add_physmap_entry(mem_regions[i].mr_start,
889 mem_regions[i].mr_size, physmap, &physmap_idx);
894 /* Do basic tuning, hz etc */
899 /* Bootstrap enough of pmap to enter the kernel proper */
900 kernlen = (lastaddr - KERNBASE);
901 pmap_bootstrap(rvbp->kern_l1pt, mem_regions[0].mr_start, kernlen);
905 init_proc0(rvbp->kern_stack);
907 msgbufinit(msgbufp, msgbufsize);
909 init_param2(physmem);
919 bzero(void *buf, size_t len)