diff --git a/sys/arm64/arm64/machdep.c b/sys/arm64/arm64/machdep.c
index c48f2ff037c9..33635f732cac 100644
--- a/sys/arm64/arm64/machdep.c
+++ b/sys/arm64/arm64/machdep.c
@@ -1,1011 +1,1010 @@
/*-
* Copyright (c) 2014 Andrew Turner
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "opt_acpi.h"
#include "opt_platform.h"
#include "opt_ddb.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/cons.h>
#include <sys/cpu.h>
#include <sys/csan.h>
#include <sys/devmap.h>
#include <sys/efi.h>
#include <sys/exec.h>
#include <sys/imgact.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/limits.h>
#include <sys/linker.h>
#include <sys/msgbuf.h>
#include <sys/pcpu.h>
#include <sys/physmem.h>
#include <sys/proc.h>
#include <sys/ptrace.h>
#include <sys/reboot.h>
#include <sys/reg.h>
#include <sys/rwlock.h>
#include <sys/sched.h>
#include <sys/signalvar.h>
#include <sys/syscallsubr.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/ucontext.h>
#include <sys/vdso.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_phys.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_pager.h>
#include <machine/armreg.h>
#include <machine/cpu.h>
#include <machine/debug_monitor.h>
#include <machine/kdb.h>
#include <machine/machdep.h>
#include <machine/metadata.h>
#include <machine/md_var.h>
#include <machine/pcb.h>
#include <machine/undefined.h>
#include <machine/vmparam.h>
#ifdef VFP
#include <machine/vfp.h>
#endif
#ifdef DEV_ACPI
#include <contrib/dev/acpica/include/acpi.h>
#include <machine/acpica_machdep.h>
#endif
#ifdef FDT
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#endif
enum arm64_bus arm64_bus_method = ARM64_BUS_NONE;
/*
* XXX: The .bss is assumed to be in the boot CPU NUMA domain. If not we
* could relocate this, but will need to keep the same virtual address as
* it's reverenced by the EARLY_COUNTER macro.
*/
struct pcpu pcpu0;
#if defined(PERTHREAD_SSP)
/*
* The boot SSP canary. Will be replaced with a per-thread canary when
* scheduling has started.
*/
uintptr_t boot_canary = 0x49a2d892bc05a0b1ul;
#endif
static struct trapframe proc0_tf;
int early_boot = 1;
int cold = 1;
static int boot_el;
struct kva_md_info kmi;
int64_t dczva_line_size; /* The size of cache line the dc zva zeroes */
int has_pan;
/*
* Physical address of the EFI System Table. Stashed from the metadata hints
* passed into the kernel and used by the EFI code to call runtime services.
*/
vm_paddr_t efi_systbl_phys;
static struct efi_map_header *efihdr;
/* pagezero_* implementations are provided in support.S */
void pagezero_simple(void *);
void pagezero_cache(void *);
/* pagezero_simple is default pagezero */
void (*pagezero)(void *p) = pagezero_simple;
int (*apei_nmi)(void);
#if defined(PERTHREAD_SSP_WARNING)
static void
print_ssp_warning(void *data __unused)
{
printf("WARNING: Per-thread SSP is enabled but the compiler is too old to support it\n");
}
SYSINIT(ssp_warn, SI_SUB_COPYRIGHT, SI_ORDER_ANY, print_ssp_warning, NULL);
SYSINIT(ssp_warn2, SI_SUB_LAST, SI_ORDER_ANY, print_ssp_warning, NULL);
#endif
static void
pan_setup(void)
{
uint64_t id_aa64mfr1;
id_aa64mfr1 = READ_SPECIALREG(id_aa64mmfr1_el1);
if (ID_AA64MMFR1_PAN_VAL(id_aa64mfr1) != ID_AA64MMFR1_PAN_NONE)
has_pan = 1;
}
void
pan_enable(void)
{
/*
* The LLVM integrated assembler doesn't understand the PAN
* PSTATE field. Because of this we need to manually create
* the instruction in an asm block. This is equivalent to:
* msr pan, #1
*
* This sets the PAN bit, stopping the kernel from accessing
* memory when userspace can also access it unless the kernel
* uses the userspace load/store instructions.
*/
if (has_pan) {
WRITE_SPECIALREG(sctlr_el1,
READ_SPECIALREG(sctlr_el1) & ~SCTLR_SPAN);
__asm __volatile(".inst 0xd500409f | (0x1 << 8)");
}
}
bool
has_hyp(void)
{
return (boot_el == 2);
}
static void
cpu_startup(void *dummy)
{
vm_paddr_t size;
int i;
printf("real memory = %ju (%ju MB)\n", ptoa((uintmax_t)realmem),
ptoa((uintmax_t)realmem) / 1024 / 1024);
if (bootverbose) {
printf("Physical memory chunk(s):\n");
for (i = 0; phys_avail[i + 1] != 0; i += 2) {
size = phys_avail[i + 1] - phys_avail[i];
printf("%#016jx - %#016jx, %ju bytes (%ju pages)\n",
(uintmax_t)phys_avail[i],
(uintmax_t)phys_avail[i + 1] - 1,
(uintmax_t)size, (uintmax_t)size / PAGE_SIZE);
}
}
printf("avail memory = %ju (%ju MB)\n",
ptoa((uintmax_t)vm_free_count()),
ptoa((uintmax_t)vm_free_count()) / 1024 / 1024);
undef_init();
install_cpu_errata();
vm_ksubmap_init(&kmi);
bufinit();
vm_pager_bufferinit();
}
SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
static void
late_ifunc_resolve(void *dummy __unused)
{
link_elf_late_ireloc();
}
SYSINIT(late_ifunc_resolve, SI_SUB_CPU, SI_ORDER_ANY, late_ifunc_resolve, NULL);
int
cpu_idle_wakeup(int cpu)
{
return (0);
}
void
cpu_idle(int busy)
{
spinlock_enter();
if (!busy)
cpu_idleclock();
if (!sched_runnable())
__asm __volatile(
"dsb sy \n"
"wfi \n");
if (!busy)
cpu_activeclock();
spinlock_exit();
}
void
cpu_halt(void)
{
/* We should have shutdown by now, if not enter a low power sleep */
intr_disable();
while (1) {
__asm __volatile("wfi");
}
}
/*
* Flush the D-cache for non-DMA I/O so that the I-cache can
* be made coherent later.
*/
void
cpu_flush_dcache(void *ptr, size_t len)
{
/* ARM64TODO TBD */
}
/* Get current clock frequency for the given CPU ID. */
int
cpu_est_clockrate(int cpu_id, uint64_t *rate)
{
struct pcpu *pc;
pc = pcpu_find(cpu_id);
if (pc == NULL || rate == NULL)
return (EINVAL);
if (pc->pc_clock == 0)
return (EOPNOTSUPP);
*rate = pc->pc_clock;
return (0);
}
void
cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
{
pcpu->pc_acpi_id = 0xffffffff;
pcpu->pc_mpidr_low = 0xffffffff;
pcpu->pc_mpidr_high = 0xffffffff;
}
void
spinlock_enter(void)
{
struct thread *td;
register_t daif;
td = curthread;
if (td->td_md.md_spinlock_count == 0) {
daif = intr_disable();
td->td_md.md_spinlock_count = 1;
td->td_md.md_saved_daif = daif;
critical_enter();
} else
td->td_md.md_spinlock_count++;
}
void
spinlock_exit(void)
{
struct thread *td;
register_t daif;
td = curthread;
daif = td->td_md.md_saved_daif;
td->td_md.md_spinlock_count--;
if (td->td_md.md_spinlock_count == 0) {
critical_exit();
intr_restore(daif);
}
}
/*
* Construct a PCB from a trapframe. This is called from kdb_trap() where
* we want to start a backtrace from the function that caused us to enter
* the debugger. We have the context in the trapframe, but base the trace
* on the PCB. The PCB doesn't have to be perfect, as long as it contains
* enough for a backtrace.
*/
void
makectx(struct trapframe *tf, struct pcb *pcb)
{
int i;
for (i = 0; i < nitems(pcb->pcb_x); i++)
pcb->pcb_x[i] = tf->tf_x[i];
/* NB: pcb_lr is the PC, see PC_REGS() in db_machdep.h */
pcb->pcb_lr = tf->tf_elr;
pcb->pcb_sp = tf->tf_sp;
}
static void
init_proc0(vm_offset_t kstack)
{
struct pcpu *pcpup;
pcpup = cpuid_to_pcpu[0];
MPASS(pcpup != NULL);
proc_linkup0(&proc0, &thread0);
thread0.td_kstack = kstack;
thread0.td_kstack_pages = KSTACK_PAGES;
#if defined(PERTHREAD_SSP)
thread0.td_md.md_canary = boot_canary;
#endif
thread0.td_pcb = (struct pcb *)(thread0.td_kstack +
thread0.td_kstack_pages * PAGE_SIZE) - 1;
thread0.td_pcb->pcb_fpflags = 0;
thread0.td_pcb->pcb_fpusaved = &thread0.td_pcb->pcb_fpustate;
thread0.td_pcb->pcb_vfpcpu = UINT_MAX;
thread0.td_frame = &proc0_tf;
ptrauth_thread0(&thread0);
pcpup->pc_curpcb = thread0.td_pcb;
/*
* Unmask SError exceptions. They are used to signal a RAS failure,
* or other hardware error.
*/
serror_enable();
}
/*
* Get an address to be used to write to kernel data that may be mapped
* read-only, e.g. to patch kernel code.
*/
bool
arm64_get_writable_addr(vm_offset_t addr, vm_offset_t *out)
{
vm_paddr_t pa;
/* Check if the page is writable */
if (PAR_SUCCESS(arm64_address_translate_s1e1w(addr))) {
*out = addr;
return (true);
}
/*
* Find the physical address of the given page.
*/
if (!pmap_klookup(addr, &pa)) {
return (false);
}
/*
* If it is within the DMAP region and is writable use that.
*/
if (PHYS_IN_DMAP(pa)) {
addr = PHYS_TO_DMAP(pa);
if (PAR_SUCCESS(arm64_address_translate_s1e1w(addr))) {
*out = addr;
return (true);
}
}
return (false);
}
-typedef void (*efi_map_entry_cb)(struct efi_md *);
+typedef void (*efi_map_entry_cb)(struct efi_md *, void *argp);
static void
-foreach_efi_map_entry(struct efi_map_header *efihdr, efi_map_entry_cb cb)
+foreach_efi_map_entry(struct efi_map_header *efihdr, efi_map_entry_cb cb, void *argp)
{
struct efi_md *map, *p;
size_t efisz;
int ndesc, i;
/*
* Memory map data provided by UEFI via the GetMemoryMap
* Boot Services API.
*/
efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
map = (struct efi_md *)((uint8_t *)efihdr + efisz);
if (efihdr->descriptor_size == 0)
return;
ndesc = efihdr->memory_size / efihdr->descriptor_size;
for (i = 0, p = map; i < ndesc; i++,
p = efi_next_descriptor(p, efihdr->descriptor_size)) {
- cb(p);
+ cb(p, argp);
}
}
static void
-exclude_efi_map_entry(struct efi_md *p)
+exclude_efi_map_entry(struct efi_md *p, void *argp __unused)
{
switch (p->md_type) {
case EFI_MD_TYPE_CODE:
case EFI_MD_TYPE_DATA:
case EFI_MD_TYPE_BS_CODE:
case EFI_MD_TYPE_BS_DATA:
case EFI_MD_TYPE_FREE:
/*
* We're allowed to use any entry with these types.
*/
break;
default:
physmem_exclude_region(p->md_phys, p->md_pages * EFI_PAGE_SIZE,
EXFLAG_NOALLOC);
}
}
static void
exclude_efi_map_entries(struct efi_map_header *efihdr)
{
- foreach_efi_map_entry(efihdr, exclude_efi_map_entry);
+ foreach_efi_map_entry(efihdr, exclude_efi_map_entry, NULL);
}
static void
-add_efi_map_entry(struct efi_md *p)
+add_efi_map_entry(struct efi_md *p, void *argp __unused)
{
switch (p->md_type) {
case EFI_MD_TYPE_RECLAIM:
/*
* The recomended location for ACPI tables. Map into the
* DMAP so we can access them from userspace via /dev/mem.
*/
case EFI_MD_TYPE_RT_CODE:
/*
* Some UEFI implementations put the system table in the
* runtime code section. Include it in the DMAP, but will
* be excluded from phys_avail later.
*/
case EFI_MD_TYPE_RT_DATA:
/*
* Runtime data will be excluded after the DMAP
* region is created to stop it from being added
* to phys_avail.
*/
case EFI_MD_TYPE_CODE:
case EFI_MD_TYPE_DATA:
case EFI_MD_TYPE_BS_CODE:
case EFI_MD_TYPE_BS_DATA:
case EFI_MD_TYPE_FREE:
/*
* We're allowed to use any entry with these types.
*/
physmem_hardware_region(p->md_phys,
p->md_pages * EFI_PAGE_SIZE);
break;
}
}
static void
add_efi_map_entries(struct efi_map_header *efihdr)
{
-
- foreach_efi_map_entry(efihdr, add_efi_map_entry);
+ foreach_efi_map_entry(efihdr, add_efi_map_entry, NULL);
}
static void
-print_efi_map_entry(struct efi_md *p)
+print_efi_map_entry(struct efi_md *p, void *argp __unused)
{
const char *type;
static const char *types[] = {
"Reserved",
"LoaderCode",
"LoaderData",
"BootServicesCode",
"BootServicesData",
"RuntimeServicesCode",
"RuntimeServicesData",
"ConventionalMemory",
"UnusableMemory",
"ACPIReclaimMemory",
"ACPIMemoryNVS",
"MemoryMappedIO",
"MemoryMappedIOPortSpace",
"PalCode",
"PersistentMemory"
};
if (p->md_type < nitems(types))
type = types[p->md_type];
else
type = "<INVALID>";
printf("%23s %012lx %012lx %08lx ", type, p->md_phys,
p->md_virt, p->md_pages);
if (p->md_attr & EFI_MD_ATTR_UC)
printf("UC ");
if (p->md_attr & EFI_MD_ATTR_WC)
printf("WC ");
if (p->md_attr & EFI_MD_ATTR_WT)
printf("WT ");
if (p->md_attr & EFI_MD_ATTR_WB)
printf("WB ");
if (p->md_attr & EFI_MD_ATTR_UCE)
printf("UCE ");
if (p->md_attr & EFI_MD_ATTR_WP)
printf("WP ");
if (p->md_attr & EFI_MD_ATTR_RP)
printf("RP ");
if (p->md_attr & EFI_MD_ATTR_XP)
printf("XP ");
if (p->md_attr & EFI_MD_ATTR_NV)
printf("NV ");
if (p->md_attr & EFI_MD_ATTR_MORE_RELIABLE)
printf("MORE_RELIABLE ");
if (p->md_attr & EFI_MD_ATTR_RO)
printf("RO ");
if (p->md_attr & EFI_MD_ATTR_RT)
printf("RUNTIME");
printf("\n");
}
static void
print_efi_map_entries(struct efi_map_header *efihdr)
{
printf("%23s %12s %12s %8s %4s\n",
"Type", "Physical", "Virtual", "#Pages", "Attr");
- foreach_efi_map_entry(efihdr, print_efi_map_entry);
+ foreach_efi_map_entry(efihdr, print_efi_map_entry, NULL);
}
#ifdef FDT
static void
try_load_dtb(caddr_t kmdp)
{
vm_offset_t dtbp;
dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
#if defined(FDT_DTB_STATIC)
/*
* In case the device tree blob was not retrieved (from metadata) try
* to use the statically embedded one.
*/
if (dtbp == 0)
dtbp = (vm_offset_t)&fdt_static_dtb;
#endif
if (dtbp == (vm_offset_t)NULL) {
#ifndef TSLOG
printf("ERROR loading DTB\n");
#endif
return;
}
if (OF_install(OFW_FDT, 0) == FALSE)
panic("Cannot install FDT");
if (OF_init((void *)dtbp) != 0)
panic("OF_init failed with the found device tree");
parse_fdt_bootargs();
}
#endif
static bool
bus_probe(void)
{
bool has_acpi, has_fdt;
char *order, *env;
has_acpi = has_fdt = false;
#ifdef FDT
has_fdt = (OF_peer(0) != 0);
#endif
#ifdef DEV_ACPI
has_acpi = (AcpiOsGetRootPointer() != 0);
#endif
env = kern_getenv("kern.cfg.order");
if (env != NULL) {
order = env;
while (order != NULL) {
if (has_acpi &&
strncmp(order, "acpi", 4) == 0 &&
(order[4] == ',' || order[4] == '\0')) {
arm64_bus_method = ARM64_BUS_ACPI;
break;
}
if (has_fdt &&
strncmp(order, "fdt", 3) == 0 &&
(order[3] == ',' || order[3] == '\0')) {
arm64_bus_method = ARM64_BUS_FDT;
break;
}
order = strchr(order, ',');
if (order != NULL)
order++; /* Skip comma */
}
freeenv(env);
/* If we set the bus method it is valid */
if (arm64_bus_method != ARM64_BUS_NONE)
return (true);
}
/* If no order or an invalid order was set use the default */
if (arm64_bus_method == ARM64_BUS_NONE) {
if (has_fdt)
arm64_bus_method = ARM64_BUS_FDT;
else if (has_acpi)
arm64_bus_method = ARM64_BUS_ACPI;
}
/*
* If no option was set the default is valid, otherwise we are
* setting one to get cninit() working, then calling panic to tell
* the user about the invalid bus setup.
*/
return (env == NULL);
}
static void
cache_setup(void)
{
int dczva_line_shift;
uint32_t dczid_el0;
identify_cache(READ_SPECIALREG(ctr_el0));
dczid_el0 = READ_SPECIALREG(dczid_el0);
/* Check if dc zva is not prohibited */
if (dczid_el0 & DCZID_DZP)
dczva_line_size = 0;
else {
/* Same as with above calculations */
dczva_line_shift = DCZID_BS_SIZE(dczid_el0);
dczva_line_size = sizeof(int) << dczva_line_shift;
/* Change pagezero function */
pagezero = pagezero_cache;
}
}
int
memory_mapping_mode(vm_paddr_t pa)
{
struct efi_md *map, *p;
size_t efisz;
int ndesc, i;
if (efihdr == NULL)
return (VM_MEMATTR_WRITE_BACK);
/*
* Memory map data provided by UEFI via the GetMemoryMap
* Boot Services API.
*/
efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
map = (struct efi_md *)((uint8_t *)efihdr + efisz);
if (efihdr->descriptor_size == 0)
return (VM_MEMATTR_WRITE_BACK);
ndesc = efihdr->memory_size / efihdr->descriptor_size;
for (i = 0, p = map; i < ndesc; i++,
p = efi_next_descriptor(p, efihdr->descriptor_size)) {
if (pa < p->md_phys ||
pa >= p->md_phys + p->md_pages * EFI_PAGE_SIZE)
continue;
if (p->md_type == EFI_MD_TYPE_IOMEM ||
p->md_type == EFI_MD_TYPE_IOPORT)
return (VM_MEMATTR_DEVICE);
else if ((p->md_attr & EFI_MD_ATTR_WB) != 0 ||
p->md_type == EFI_MD_TYPE_RECLAIM)
return (VM_MEMATTR_WRITE_BACK);
else if ((p->md_attr & EFI_MD_ATTR_WT) != 0)
return (VM_MEMATTR_WRITE_THROUGH);
else if ((p->md_attr & EFI_MD_ATTR_WC) != 0)
return (VM_MEMATTR_WRITE_COMBINING);
break;
}
return (VM_MEMATTR_DEVICE);
}
void
initarm(struct arm64_bootparams *abp)
{
struct efi_fb *efifb;
struct pcpu *pcpup;
char *env;
#ifdef FDT
struct mem_region mem_regions[FDT_MEM_REGIONS];
int mem_regions_sz;
phandle_t root;
char dts_version[255];
#endif
vm_offset_t lastaddr;
caddr_t kmdp;
bool valid;
TSRAW(&thread0, TS_ENTER, __func__, NULL);
boot_el = abp->boot_el;
/* Parse loader or FDT boot parametes. Determine last used address. */
lastaddr = parse_boot_param(abp);
/* Find the kernel address */
kmdp = preload_search_by_type("elf kernel");
if (kmdp == NULL)
kmdp = preload_search_by_type("elf64 kernel");
identify_cpu(0);
update_special_regs(0);
link_elf_ireloc(kmdp);
#ifdef FDT
try_load_dtb(kmdp);
#endif
efi_systbl_phys = MD_FETCH(kmdp, MODINFOMD_FW_HANDLE, vm_paddr_t);
/* Load the physical memory ranges */
efihdr = (struct efi_map_header *)preload_search_info(kmdp,
MODINFO_METADATA | MODINFOMD_EFI_MAP);
if (efihdr != NULL)
add_efi_map_entries(efihdr);
#ifdef FDT
else {
/* Grab physical memory regions information from device tree. */
if (fdt_get_mem_regions(mem_regions, &mem_regions_sz,
NULL) != 0)
panic("Cannot get physical memory regions");
physmem_hardware_regions(mem_regions, mem_regions_sz);
}
if (fdt_get_reserved_mem(mem_regions, &mem_regions_sz) == 0)
physmem_exclude_regions(mem_regions, mem_regions_sz,
EXFLAG_NODUMP | EXFLAG_NOALLOC);
#endif
/* Exclude the EFI framebuffer from our view of physical memory. */
efifb = (struct efi_fb *)preload_search_info(kmdp,
MODINFO_METADATA | MODINFOMD_EFI_FB);
if (efifb != NULL)
physmem_exclude_region(efifb->fb_addr, efifb->fb_size,
EXFLAG_NOALLOC);
/* Set the pcpu data, this is needed by pmap_bootstrap */
pcpup = &pcpu0;
pcpu_init(pcpup, 0, sizeof(struct pcpu));
/*
* Set the pcpu pointer with a backup in tpidr_el1 to be
* loaded when entering the kernel from userland.
*/
__asm __volatile(
"mov x18, %0 \n"
"msr tpidr_el1, %0" :: "r"(pcpup));
/* locore.S sets sp_el0 to &thread0 so no need to set it here. */
PCPU_SET(curthread, &thread0);
PCPU_SET(midr, get_midr());
/* Do basic tuning, hz etc */
init_param1();
cache_setup();
pan_setup();
/* Bootstrap enough of pmap to enter the kernel proper */
pmap_bootstrap(KERNBASE - abp->kern_delta, lastaddr - KERNBASE);
/* Exclude entries needed in the DMAP region, but not phys_avail */
if (efihdr != NULL)
exclude_efi_map_entries(efihdr);
physmem_init_kernel_globals();
devmap_bootstrap(0, NULL);
valid = bus_probe();
cninit();
set_ttbr0(abp->kern_ttbr0);
cpu_tlb_flushID();
if (!valid)
panic("Invalid bus configuration: %s",
kern_getenv("kern.cfg.order"));
/*
* Check if pointer authentication is available on this system, and
* if so enable its use. This needs to be called before init_proc0
* as that will configure the thread0 pointer authentication keys.
*/
ptrauth_init();
/*
* Dump the boot metadata. We have to wait for cninit() since console
* output is required. If it's grossly incorrect the kernel will never
* make it this far.
*/
if (getenv_is_true("debug.dump_modinfo_at_boot"))
preload_dump();
init_proc0(abp->kern_stack);
msgbufinit(msgbufp, msgbufsize);
mutex_init();
init_param2(physmem);
dbg_init();
kdb_init();
#ifdef KDB
if ((boothowto & RB_KDB) != 0)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
#endif
pan_enable();
kcsan_cpu_init(0);
env = kern_getenv("kernelname");
if (env != NULL)
strlcpy(kernelname, env, sizeof(kernelname));
#ifdef FDT
if (arm64_bus_method == ARM64_BUS_FDT) {
root = OF_finddevice("/");
if (OF_getprop(root, "freebsd,dts-version", dts_version, sizeof(dts_version)) > 0) {
if (strcmp(LINUX_DTS_VERSION, dts_version) != 0)
printf("WARNING: DTB version is %s while kernel expects %s, "
"please update the DTB in the ESP\n",
dts_version,
LINUX_DTS_VERSION);
} else {
printf("WARNING: Cannot find freebsd,dts-version property, "
"cannot check DTB compliance\n");
}
}
#endif
if (boothowto & RB_VERBOSE) {
if (efihdr != NULL)
print_efi_map_entries(efihdr);
physmem_print_tables();
}
early_boot = 0;
TSEXIT();
}
void
dbg_init(void)
{
/* Clear OS lock */
WRITE_SPECIALREG(oslar_el1, 0);
/* This permits DDB to use debug registers for watchpoints. */
dbg_monitor_init();
/* TODO: Eventually will need to initialize debug registers here. */
}
#ifdef DDB
#include <ddb/ddb.h>
DB_SHOW_COMMAND(specialregs, db_show_spregs)
{
#define PRINT_REG(reg) \
db_printf(__STRING(reg) " = %#016lx\n", READ_SPECIALREG(reg))
PRINT_REG(actlr_el1);
PRINT_REG(afsr0_el1);
PRINT_REG(afsr1_el1);
PRINT_REG(aidr_el1);
PRINT_REG(amair_el1);
PRINT_REG(ccsidr_el1);
PRINT_REG(clidr_el1);
PRINT_REG(contextidr_el1);
PRINT_REG(cpacr_el1);
PRINT_REG(csselr_el1);
PRINT_REG(ctr_el0);
PRINT_REG(currentel);
PRINT_REG(daif);
PRINT_REG(dczid_el0);
PRINT_REG(elr_el1);
PRINT_REG(esr_el1);
PRINT_REG(far_el1);
#if 0
/* ARM64TODO: Enable VFP before reading floating-point registers */
PRINT_REG(fpcr);
PRINT_REG(fpsr);
#endif
PRINT_REG(id_aa64afr0_el1);
PRINT_REG(id_aa64afr1_el1);
PRINT_REG(id_aa64dfr0_el1);
PRINT_REG(id_aa64dfr1_el1);
PRINT_REG(id_aa64isar0_el1);
PRINT_REG(id_aa64isar1_el1);
PRINT_REG(id_aa64pfr0_el1);
PRINT_REG(id_aa64pfr1_el1);
PRINT_REG(id_afr0_el1);
PRINT_REG(id_dfr0_el1);
PRINT_REG(id_isar0_el1);
PRINT_REG(id_isar1_el1);
PRINT_REG(id_isar2_el1);
PRINT_REG(id_isar3_el1);
PRINT_REG(id_isar4_el1);
PRINT_REG(id_isar5_el1);
PRINT_REG(id_mmfr0_el1);
PRINT_REG(id_mmfr1_el1);
PRINT_REG(id_mmfr2_el1);
PRINT_REG(id_mmfr3_el1);
#if 0
/* Missing from llvm */
PRINT_REG(id_mmfr4_el1);
#endif
PRINT_REG(id_pfr0_el1);
PRINT_REG(id_pfr1_el1);
PRINT_REG(isr_el1);
PRINT_REG(mair_el1);
PRINT_REG(midr_el1);
PRINT_REG(mpidr_el1);
PRINT_REG(mvfr0_el1);
PRINT_REG(mvfr1_el1);
PRINT_REG(mvfr2_el1);
PRINT_REG(revidr_el1);
PRINT_REG(sctlr_el1);
PRINT_REG(sp_el0);
PRINT_REG(spsel);
PRINT_REG(spsr_el1);
PRINT_REG(tcr_el1);
PRINT_REG(tpidr_el0);
PRINT_REG(tpidr_el1);
PRINT_REG(tpidrro_el0);
PRINT_REG(ttbr0_el1);
PRINT_REG(ttbr1_el1);
PRINT_REG(vbar_el1);
#undef PRINT_REG
}
DB_SHOW_COMMAND(vtop, db_show_vtop)
{
uint64_t phys;
if (have_addr) {
phys = arm64_address_translate_s1e1r(addr);
db_printf("EL1 physical address reg (read): 0x%016lx\n", phys);
phys = arm64_address_translate_s1e1w(addr);
db_printf("EL1 physical address reg (write): 0x%016lx\n", phys);
phys = arm64_address_translate_s1e0r(addr);
db_printf("EL0 physical address reg (read): 0x%016lx\n", phys);
phys = arm64_address_translate_s1e0w(addr);
db_printf("EL0 physical address reg (write): 0x%016lx\n", phys);
} else
db_printf("show vtop <virt_addr>\n");
}
#endif