404

[ Avaa Bypassed ]




Upload:

Command:

botdev@3.129.218.121: ~ $
/*
 * Kernel page table mapping
 *
 * Copyright (C) 2015 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __ASM_KERNEL_PGTABLE_H
#define __ASM_KERNEL_PGTABLE_H

#include <asm/pgtable.h>
#include <asm/sparsemem.h>

/*
 * The linear mapping and the start of memory are both 2M aligned (per
 * the arm64 booting.txt requirements). Hence we can use section mapping
 * with 4K (section size = 2M) but not with 16K (section size = 32M) or
 * 64K (section size = 512M).
 */
#ifdef CONFIG_ARM64_4K_PAGES
#define ARM64_SWAPPER_USES_SECTION_MAPS 1
#else
#define ARM64_SWAPPER_USES_SECTION_MAPS 0
#endif

/*
 * The idmap and swapper page tables need some space reserved in the kernel
 * image. Both require pgd, pud (4 levels only) and pmd tables to (section)
 * map the kernel. With the 64K page configuration, swapper and idmap need to
 * map to pte level. The swapper also maps the FDT (see __create_page_tables
 * for more information). Note that the number of ID map translation levels
 * could be increased on the fly if system RAM is out of reach for the default
 * VA range, so pages required to map highest possible PA are reserved in all
 * cases.
 */
#if ARM64_SWAPPER_USES_SECTION_MAPS
#define SWAPPER_PGTABLE_LEVELS	(CONFIG_PGTABLE_LEVELS - 1)
#define IDMAP_PGTABLE_LEVELS	(ARM64_HW_PGTABLE_LEVELS(PHYS_MASK_SHIFT) - 1)
#else
#define SWAPPER_PGTABLE_LEVELS	(CONFIG_PGTABLE_LEVELS)
#define IDMAP_PGTABLE_LEVELS	(ARM64_HW_PGTABLE_LEVELS(PHYS_MASK_SHIFT))
#endif

#define SWAPPER_DIR_SIZE	(SWAPPER_PGTABLE_LEVELS * PAGE_SIZE)
#define IDMAP_DIR_SIZE		(IDMAP_PGTABLE_LEVELS * PAGE_SIZE)

#ifdef CONFIG_ARM64_SW_TTBR0_PAN
#define RESERVED_TTBR0_SIZE	(PAGE_SIZE)
#else
#define RESERVED_TTBR0_SIZE	(0)
#endif

/* Initial memory map size */
#if ARM64_SWAPPER_USES_SECTION_MAPS
#define SWAPPER_BLOCK_SHIFT	SECTION_SHIFT
#define SWAPPER_BLOCK_SIZE	SECTION_SIZE
#define SWAPPER_TABLE_SHIFT	PUD_SHIFT
#else
#define SWAPPER_BLOCK_SHIFT	PAGE_SHIFT
#define SWAPPER_BLOCK_SIZE	PAGE_SIZE
#define SWAPPER_TABLE_SHIFT	PMD_SHIFT
#endif

/* The size of the initial kernel direct mapping */
#define SWAPPER_INIT_MAP_SIZE	(_AC(1, UL) << SWAPPER_TABLE_SHIFT)

/*
 * Initial memory map attributes.
 */
#define SWAPPER_PTE_FLAGS	(PTE_TYPE_PAGE | PTE_AF | PTE_SHARED)
#define SWAPPER_PMD_FLAGS	(PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S)

#if ARM64_SWAPPER_USES_SECTION_MAPS
#define SWAPPER_MM_MMUFLAGS	(PMD_ATTRINDX(MT_NORMAL) | SWAPPER_PMD_FLAGS)
#else
#define SWAPPER_MM_MMUFLAGS	(PTE_ATTRINDX(MT_NORMAL) | SWAPPER_PTE_FLAGS)
#endif

/*
 * To make optimal use of block mappings when laying out the linear
 * mapping, round down the base of physical memory to a size that can
 * be mapped efficiently, i.e., either PUD_SIZE (4k granule) or PMD_SIZE
 * (64k granule), or a multiple that can be mapped using contiguous bits
 * in the page tables: 32 * PMD_SIZE (16k granule)
 */
#if defined(CONFIG_ARM64_4K_PAGES)
#define ARM64_MEMSTART_SHIFT		PUD_SHIFT
#elif defined(CONFIG_ARM64_16K_PAGES)
#define ARM64_MEMSTART_SHIFT		(PMD_SHIFT + 5)
#else
#define ARM64_MEMSTART_SHIFT		PMD_SHIFT
#endif

/*
 * sparsemem vmemmap imposes an additional requirement on the alignment of
 * memstart_addr, due to the fact that the base of the vmemmap region
 * has a direct correspondence, and needs to appear sufficiently aligned
 * in the virtual address space.
 */
#if defined(CONFIG_SPARSEMEM_VMEMMAP) && ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
#define ARM64_MEMSTART_ALIGN	(1UL << SECTION_SIZE_BITS)
#else
#define ARM64_MEMSTART_ALIGN	(1UL << ARM64_MEMSTART_SHIFT)
#endif

#endif	/* __ASM_KERNEL_PGTABLE_H */

Filemanager

Name Type Size Permission Actions
xen Folder 0755
Kbuild File 703 B 0644
acenv.h File 541 B 0644
acpi.h File 4.34 KB 0644
alternative.h File 7.63 KB 0644
arch_gicv3.h File 3.44 KB 0644
arch_timer.h File 4.87 KB 0644
arm-cci.h File 794 B 0644
asm-bug.h File 1.45 KB 0644
asm-offsets.h File 35 B 0644
asm-uaccess.h File 2.09 KB 0644
assembler.h File 13.51 KB 0644
atomic.h File 8.35 KB 0644
atomic_ll_sc.h File 10.61 KB 0644
atomic_lse.h File 14.82 KB 0644
barrier.h File 3.78 KB 0644
bitops.h File 1.9 KB 0644
bitrev.h File 452 B 0644
boot.h File 384 B 0644
brk-imm.h File 706 B 0644
bug.h File 1.09 KB 0644
cache.h File 2.23 KB 0644
cacheflush.h File 4.87 KB 0644
checksum.h File 1.35 KB 0644
clocksource.h File 192 B 0644
cmpxchg.h File 7.98 KB 0644
compat.h File 7.15 KB 0644
compiler.h File 1.18 KB 0644
cpu.h File 1.84 KB 0644
cpu_ops.h File 2.73 KB 0644
cpucaps.h File 1.87 KB 0644
cpufeature.h File 19.14 KB 0644
cpuidle.h File 401 B 0644
cputype.h File 8.1 KB 0644
current.h File 517 B 0644
daifflags.h File 1.59 KB 0644
dcc.h File 1.36 KB 0644
debug-monitors.h File 3.76 KB 0644
device.h File 886 B 0644
dma-mapping.h File 2.42 KB 0644
dmi.h File 850 B 0644
efi.h File 4.57 KB 0644
elf.h File 5.7 KB 0644
esr.h File 9.02 KB 0644
exception.h File 1.21 KB 0644
exec.h File 868 B 0644
extable.h File 815 B 0644
fb.h File 1000 B 0644
fixmap.h File 2.91 KB 0644
fpsimd.h File 4.21 KB 0644
fpsimdmacros.h File 5.62 KB 0644
ftrace.h File 1.92 KB 0644
futex.h File 3.41 KB 0644
hardirq.h File 2.08 KB 0644
hugetlb.h File 2.71 KB 0644
hw_breakpoint.h File 4.46 KB 0644
hwcap.h File 1.86 KB 0644
hypervisor.h File 144 B 0644
insn.h File 16.03 KB 0644
io.h File 7.72 KB 0644
irq.h File 307 B 0644
irq_work.h File 228 B 0644
irqflags.h File 2.3 KB 0644
jump_label.h File 1.68 KB 0644
kasan.h File 1.16 KB 0644
kernel-pgtable.h File 4.03 KB 0644
kexec.h File 2.42 KB 0644
kgdb.h File 3.79 KB 0644
kprobes.h File 1.74 KB 0644
kvm_arm.h File 8.38 KB 0644
kvm_asm.h File 4.26 KB 0644
kvm_coproc.h File 2.04 KB 0644
kvm_emulate.h File 10.38 KB 0644
kvm_host.h File 15.73 KB 0644
kvm_hyp.h File 5.79 KB 0644
kvm_mmio.h File 1.3 KB 0644
kvm_mmu.h File 11.72 KB 0644
linkage.h File 114 B 0644
lse.h File 1.26 KB 0644
memblock.h File 720 B 0644
memory.h File 9.16 KB 0644
mmu.h File 2.76 KB 0644
mmu_context.h File 6.35 KB 0644
mmzone.h File 266 B 0644
module.h File 2.8 KB 0644
neon.h File 815 B 0644
numa.h File 1.33 KB 0644
page-def.h File 1.17 KB 0644
page.h File 1.61 KB 0644
paravirt.h File 458 B 0644
pci.h File 878 B 0644
percpu.h File 7.48 KB 0644
perf_event.h File 3.17 KB 0644
pgalloc.h File 3.71 KB 0644
pgtable-hwdef.h File 9.4 KB 0644
pgtable-prot.h File 4.38 KB 0644
pgtable-types.h File 1.84 KB 0644
pgtable.h File 21.55 KB 0644
probes.h File 1022 B 0644
proc-fns.h File 1.21 KB 0644
processor.h File 6.52 KB 0644
ptdump.h File 1.42 KB 0644
ptrace.h File 9 KB 0644
sdei.h File 1.46 KB 0644
seccomp.h File 714 B 0644
sections.h File 1.46 KB 0644
shmparam.h File 965 B 0644
signal32.h File 1.45 KB 0644
simd.h File 1.39 KB 0644
smp.h File 4.23 KB 0644
smp_plat.h File 1.43 KB 0644
sparsemem.h File 771 B 0644
spinlock.h File 3.33 KB 0644
spinlock_types.h File 1.06 KB 0644
stack_pointer.h File 247 B 0644
stackprotector.h File 1.11 KB 0644
stacktrace.h File 2.53 KB 0644
stage2_pgtable-nopmd.h File 1.3 KB 0644
stage2_pgtable-nopud.h File 1.24 KB 0644
stage2_pgtable.h File 4.89 KB 0644
stat.h File 1.43 KB 0644
string.h File 2.33 KB 0644
suspend.h File 1.65 KB 0644
sync_bitops.h File 1.11 KB 0644
syscall.h File 2.87 KB 0644
sysreg.h File 25.1 KB 0644
system_misc.h File 1.86 KB 0644
thread_info.h File 3.93 KB 0644
timex.h File 883 B 0644
tlb.h File 2.22 KB 0644
tlbflush.h File 5.38 KB 0644
topology.h File 1.29 KB 0644
traps.h File 3.33 KB 0644
uaccess.h File 12.01 KB 0644
unistd.h File 1.6 KB 0644
unistd32.h File 27.53 KB 0644
uprobes.h File 777 B 0644
vdso.h File 1.09 KB 0644
vdso_datapage.h File 1.53 KB 0644
vectors.h File 1.75 KB 0644
virt.h File 3 KB 0644
vmap_stack.h File 769 B 0644
word-at-a-time.h File 2.22 KB 0644