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machdep.c (283033) machdep.c (283366)
1/* $NetBSD: arm32_machdep.c,v 1.44 2004/03/24 15:34:47 atatat Exp $ */
2
3/*-
4 * Copyright (c) 2004 Olivier Houchard
5 * Copyright (c) 1994-1998 Mark Brinicombe.
6 * Copyright (c) 1994 Brini.
7 * All rights reserved.
8 *

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44
45#include "opt_compat.h"
46#include "opt_ddb.h"
47#include "opt_platform.h"
48#include "opt_sched.h"
49#include "opt_timer.h"
50
51#include <sys/cdefs.h>
1/* $NetBSD: arm32_machdep.c,v 1.44 2004/03/24 15:34:47 atatat Exp $ */
2
3/*-
4 * Copyright (c) 2004 Olivier Houchard
5 * Copyright (c) 1994-1998 Mark Brinicombe.
6 * Copyright (c) 1994 Brini.
7 * All rights reserved.
8 *

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44
45#include "opt_compat.h"
46#include "opt_ddb.h"
47#include "opt_platform.h"
48#include "opt_sched.h"
49#include "opt_timer.h"
50
51#include <sys/cdefs.h>
52__FBSDID("$FreeBSD: head/sys/arm/arm/machdep.c 283033 2015-05-17 17:03:37Z ian $");
52__FBSDID("$FreeBSD: head/sys/arm/arm/machdep.c 283366 2015-05-24 12:20:11Z andrew $");
53
54#include <sys/param.h>
55#include <sys/proc.h>
56#include <sys/systm.h>
57#include <sys/bio.h>
58#include <sys/buf.h>
59#include <sys/bus.h>
60#include <sys/cons.h>

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240int vfp_exists;
241SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD,
242 &vfp_exists, 0, "Floating point support enabled");
243
244void
245board_set_serial(uint64_t serial)
246{
247
53
54#include <sys/param.h>
55#include <sys/proc.h>
56#include <sys/systm.h>
57#include <sys/bio.h>
58#include <sys/buf.h>
59#include <sys/bus.h>
60#include <sys/cons.h>

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240int vfp_exists;
241SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD,
242 &vfp_exists, 0, "Floating point support enabled");
243
244void
245board_set_serial(uint64_t serial)
246{
247
248 snprintf(board_serial, sizeof(board_serial)-1,
248 snprintf(board_serial, sizeof(board_serial)-1,
249 "%016jx", serial);
250}
251
252void
253board_set_revision(uint32_t revision)
254{
255
256 board_revision = revision;

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292#if defined(COMPAT_43)
293 td->td_sigstk.ss_flags |= SS_ONSTACK;
294#endif
295 } else
296 fp = (struct sigframe *)td->td_frame->tf_usr_sp;
297
298 /* make room on the stack */
299 fp--;
249 "%016jx", serial);
250}
251
252void
253board_set_revision(uint32_t revision)
254{
255
256 board_revision = revision;

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292#if defined(COMPAT_43)
293 td->td_sigstk.ss_flags |= SS_ONSTACK;
294#endif
295 } else
296 fp = (struct sigframe *)td->td_frame->tf_usr_sp;
297
298 /* make room on the stack */
299 fp--;
300
300
301 /* make the stack aligned */
302 fp = (struct sigframe *)STACKALIGN(fp);
303 /* Populate the siginfo frame. */
304 get_mcontext(td, &frame.sf_uc.uc_mcontext, 0);
305 frame.sf_si = ksi->ksi_info;
306 frame.sf_uc.uc_sigmask = *mask;
307 frame.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK )
308 ? ((onstack) ? SS_ONSTACK : 0) : SS_DISABLE;

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323 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
324
325 /*
326 * Build context to run handler in. We invoke the handler
327 * directly, only returning via the trampoline. Note the
328 * trampoline version numbers are coordinated with machine-
329 * dependent code in libc.
330 */
301 /* make the stack aligned */
302 fp = (struct sigframe *)STACKALIGN(fp);
303 /* Populate the siginfo frame. */
304 get_mcontext(td, &frame.sf_uc.uc_mcontext, 0);
305 frame.sf_si = ksi->ksi_info;
306 frame.sf_uc.uc_sigmask = *mask;
307 frame.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK )
308 ? ((onstack) ? SS_ONSTACK : 0) : SS_DISABLE;

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323 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
324
325 /*
326 * Build context to run handler in. We invoke the handler
327 * directly, only returning via the trampoline. Note the
328 * trampoline version numbers are coordinated with machine-
329 * dependent code in libc.
330 */
331
331
332 tf->tf_r0 = sig;
333 tf->tf_r1 = (register_t)&fp->sf_si;
334 tf->tf_r2 = (register_t)&fp->sf_uc;
335
336 /* the trampoline uses r5 as the uc address */
337 tf->tf_r5 = (register_t)&fp->sf_uc;
338 tf->tf_pc = (register_t)catcher;
339 tf->tf_usr_sp = (register_t)fp;

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425
426 identify_arm_cpu();
427
428 vm_ksubmap_init(&kmi);
429
430 /*
431 * Display the RAM layout.
432 */
332 tf->tf_r0 = sig;
333 tf->tf_r1 = (register_t)&fp->sf_si;
334 tf->tf_r2 = (register_t)&fp->sf_uc;
335
336 /* the trampoline uses r5 as the uc address */
337 tf->tf_r5 = (register_t)&fp->sf_uc;
338 tf->tf_pc = (register_t)catcher;
339 tf->tf_usr_sp = (register_t)fp;

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425
426 identify_arm_cpu();
427
428 vm_ksubmap_init(&kmi);
429
430 /*
431 * Display the RAM layout.
432 */
433 printf("real memory = %ju (%ju MB)\n",
433 printf("real memory = %ju (%ju MB)\n",
434 (uintmax_t)arm32_ptob(realmem),
435 (uintmax_t)arm32_ptob(realmem) / mbyte);
436 printf("avail memory = %ju (%ju MB)\n",
437 (uintmax_t)arm32_ptob(vm_cnt.v_free_count),
438 (uintmax_t)arm32_ptob(vm_cnt.v_free_count) / mbyte);
439 if (bootverbose) {
440 arm_physmem_print_tables();
441 arm_devmap_print_table();

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487{
488
489 return (ENXIO);
490}
491
492void
493cpu_idle(int busy)
494{
434 (uintmax_t)arm32_ptob(realmem),
435 (uintmax_t)arm32_ptob(realmem) / mbyte);
436 printf("avail memory = %ju (%ju MB)\n",
437 (uintmax_t)arm32_ptob(vm_cnt.v_free_count),
438 (uintmax_t)arm32_ptob(vm_cnt.v_free_count) / mbyte);
439 if (bootverbose) {
440 arm_physmem_print_tables();
441 arm_devmap_print_table();

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487{
488
489 return (ENXIO);
490}
491
492void
493cpu_idle(int busy)
494{
495
495
496 CTR2(KTR_SPARE2, "cpu_idle(%d) at %d", busy, curcpu);
497 spinlock_enter();
498#ifndef NO_EVENTTIMERS
499 if (!busy)
500 cpu_idleclock();
501#endif
502 if (!sched_runnable())
503 cpu_sleep(0);

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557 bzero(regs, sizeof(*regs));
558 return (0);
559}
560
561int
562set_regs(struct thread *td, struct reg *regs)
563{
564 struct trapframe *tf = td->td_frame;
496 CTR2(KTR_SPARE2, "cpu_idle(%d) at %d", busy, curcpu);
497 spinlock_enter();
498#ifndef NO_EVENTTIMERS
499 if (!busy)
500 cpu_idleclock();
501#endif
502 if (!sched_runnable())
503 cpu_sleep(0);

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557 bzero(regs, sizeof(*regs));
558 return (0);
559}
560
561int
562set_regs(struct thread *td, struct reg *regs)
563{
564 struct trapframe *tf = td->td_frame;
565
565
566 bcopy(regs->r, &tf->tf_r0, sizeof(regs->r));
567 tf->tf_usr_sp = regs->r_sp;
568 tf->tf_usr_lr = regs->r_lr;
569 tf->tf_pc = regs->r_pc;
570 tf->tf_spsr &= ~PSR_FLAGS;
571 tf->tf_spsr |= regs->r_cpsr & PSR_FLAGS;
566 bcopy(regs->r, &tf->tf_r0, sizeof(regs->r));
567 tf->tf_usr_sp = regs->r_sp;
568 tf->tf_usr_lr = regs->r_lr;
569 tf->tf_pc = regs->r_pc;
570 tf->tf_spsr &= ~PSR_FLAGS;
571 tf->tf_spsr |= regs->r_cpsr & PSR_FLAGS;
572 return (0);
572 return (0);
573}
574
575int
576set_fpregs(struct thread *td, struct fpreg *regs)
577{
578 return (0);
579}
580

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628 return proc_rwmem(td->td_proc, &uio);
629}
630
631int
632ptrace_single_step(struct thread *td)
633{
634 struct proc *p;
635 int error;
573}
574
575int
576set_fpregs(struct thread *td, struct fpreg *regs)
577{
578 return (0);
579}
580

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628 return proc_rwmem(td->td_proc, &uio);
629}
630
631int
632ptrace_single_step(struct thread *td)
633{
634 struct proc *p;
635 int error;
636
636
637 /* TODO: This needs to be updated for Thumb-2 */
638 if ((td->td_frame->tf_spsr & PSR_T) != 0)
639 return (EINVAL);
640
641 KASSERT(td->td_md.md_ptrace_instr == 0,
642 ("Didn't clear single step"));
643 p = td->td_proc;
644 PROC_UNLOCK(p);

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807sys_sigreturn(td, uap)
808 struct thread *td;
809 struct sigreturn_args /* {
810 const struct __ucontext *sigcntxp;
811 } */ *uap;
812{
813 ucontext_t uc;
814 int spsr;
637 /* TODO: This needs to be updated for Thumb-2 */
638 if ((td->td_frame->tf_spsr & PSR_T) != 0)
639 return (EINVAL);
640
641 KASSERT(td->td_md.md_ptrace_instr == 0,
642 ("Didn't clear single step"));
643 p = td->td_proc;
644 PROC_UNLOCK(p);

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807sys_sigreturn(td, uap)
808 struct thread *td;
809 struct sigreturn_args /* {
810 const struct __ucontext *sigcntxp;
811 } */ *uap;
812{
813 ucontext_t uc;
814 int spsr;
815
815
816 if (uap == NULL)
817 return (EFAULT);
818 if (copyin(uap->sigcntxp, &uc, sizeof(uc)))
819 return (EFAULT);
820 /*
821 * Make sure the processor mode has not been tampered with and
822 * interrupts have not been disabled.
823 */

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1181
1182 /* Grab physical memory regions information from device tree. */
1183 if (fdt_get_mem_regions(mem_regions, &mem_regions_sz, &memsize) != 0)
1184 panic("Cannot get physical memory regions");
1185 arm_physmem_hardware_regions(mem_regions, mem_regions_sz);
1186
1187 /* Grab reserved memory regions information from device tree. */
1188 if (fdt_get_reserved_regions(mem_regions, &mem_regions_sz) == 0)
816 if (uap == NULL)
817 return (EFAULT);
818 if (copyin(uap->sigcntxp, &uc, sizeof(uc)))
819 return (EFAULT);
820 /*
821 * Make sure the processor mode has not been tampered with and
822 * interrupts have not been disabled.
823 */

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1181
1182 /* Grab physical memory regions information from device tree. */
1183 if (fdt_get_mem_regions(mem_regions, &mem_regions_sz, &memsize) != 0)
1184 panic("Cannot get physical memory regions");
1185 arm_physmem_hardware_regions(mem_regions, mem_regions_sz);
1186
1187 /* Grab reserved memory regions information from device tree. */
1188 if (fdt_get_reserved_regions(mem_regions, &mem_regions_sz) == 0)
1189 arm_physmem_exclude_regions(mem_regions, mem_regions_sz,
1189 arm_physmem_exclude_regions(mem_regions, mem_regions_sz,
1190 EXFLAG_NODUMP | EXFLAG_NOALLOC);
1191
1192 /* Platform-specific initialisation */
1193 platform_probe_and_attach();
1194
1195 pcpu0_init();
1196
1197 /* Do basic tuning, hz etc */

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1387 /*
1388 * Exclude the kernel (and all the things we allocated which immediately
1389 * follow the kernel) from the VM allocation pool but not from crash
1390 * dumps. virtual_avail is a global variable which tracks the kva we've
1391 * "allocated" while setting up pmaps.
1392 *
1393 * Prepare the list of physical memory available to the vm subsystem.
1394 */
1190 EXFLAG_NODUMP | EXFLAG_NOALLOC);
1191
1192 /* Platform-specific initialisation */
1193 platform_probe_and_attach();
1194
1195 pcpu0_init();
1196
1197 /* Do basic tuning, hz etc */

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1387 /*
1388 * Exclude the kernel (and all the things we allocated which immediately
1389 * follow the kernel) from the VM allocation pool but not from crash
1390 * dumps. virtual_avail is a global variable which tracks the kva we've
1391 * "allocated" while setting up pmaps.
1392 *
1393 * Prepare the list of physical memory available to the vm subsystem.
1394 */
1395 arm_physmem_exclude_region(abp->abp_physaddr,
1395 arm_physmem_exclude_region(abp->abp_physaddr,
1396 (virtual_avail - KERNVIRTADDR), EXFLAG_NOALLOC);
1397 arm_physmem_init_kernel_globals();
1398
1399 init_param2(physmem);
1400 kdb_init();
1401
1402 return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
1403 sizeof(struct pcb)));

--- 179 unchanged lines hidden --- 		1396 (virtual_avail - KERNVIRTADDR), EXFLAG_NOALLOC);
1397 arm_physmem_init_kernel_globals();
1398
1399 init_param2(physmem);
1400 kdb_init();
1401
1402 return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
1403 sizeof(struct pcb)));

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