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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ARM_MPU_H
#define __ARM_MPU_H

/* MPUIR layout */
#define MPUIR_nU		1
#define MPUIR_DREGION		8
#define MPUIR_IREGION		16
#define MPUIR_DREGION_SZMASK	(0xFF << MPUIR_DREGION)
#define MPUIR_IREGION_SZMASK	(0xFF << MPUIR_IREGION)

/* ID_MMFR0 data relevant to MPU */
#define MMFR0_PMSA		(0xF << 4)
#define MMFR0_PMSAv7		(3 << 4)

/* MPU D/I Size Register fields */
#define MPU_RSR_SZ		1
#define MPU_RSR_EN		0
#define MPU_RSR_SD		8

/* Number of subregions (SD) */
#define MPU_NR_SUBREGS		8
#define MPU_MIN_SUBREG_SIZE	256

/* The D/I RSR value for an enabled region spanning the whole of memory */
#define MPU_RSR_ALL_MEM		63

/* Individual bits in the DR/IR ACR */
#define MPU_ACR_XN		(1 << 12)
#define MPU_ACR_SHARED		(1 << 2)

/* C, B and TEX[2:0] bits only have semantic meanings when grouped */
#define MPU_RGN_CACHEABLE	0xB
#define MPU_RGN_SHARED_CACHEABLE (MPU_RGN_CACHEABLE | MPU_ACR_SHARED)
#define MPU_RGN_STRONGLY_ORDERED 0

/* Main region should only be shared for SMP */
#ifdef CONFIG_SMP
#define MPU_RGN_NORMAL		(MPU_RGN_CACHEABLE | MPU_ACR_SHARED)
#else
#define MPU_RGN_NORMAL		MPU_RGN_CACHEABLE
#endif

/* Access permission bits of ACR (only define those that we use)*/
#define MPU_AP_PL1RO_PL0NA	(0x5 << 8)
#define MPU_AP_PL1RW_PL0RW	(0x3 << 8)
#define MPU_AP_PL1RW_PL0R0	(0x2 << 8)
#define MPU_AP_PL1RW_PL0NA	(0x1 << 8)

/* For minimal static MPU region configurations */
#define MPU_PROBE_REGION	0
#define MPU_BG_REGION		1
#define MPU_RAM_REGION		2
#define MPU_ROM_REGION		3

/* Maximum number of regions Linux is interested in */
#define MPU_MAX_REGIONS		16

#define MPU_DATA_SIDE		0
#define MPU_INSTR_SIDE		1

#ifndef __ASSEMBLY__

struct mpu_rgn {
	/* Assume same attributes for d/i-side  */
	u32 drbar;
	u32 drsr;
	u32 dracr;
};

struct mpu_rgn_info {
	unsigned int used;
	struct mpu_rgn rgns[MPU_MAX_REGIONS];
};
extern struct mpu_rgn_info mpu_rgn_info;

#ifdef CONFIG_ARM_MPU

extern void __init adjust_lowmem_bounds_mpu(void);
extern void __init mpu_setup(void);

#else

static inline void adjust_lowmem_bounds_mpu(void) {}
static inline void mpu_setup(void) {}

#endif /* !CONFIG_ARM_MPU */

#endif /* __ASSEMBLY__ */

#endif

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Kbuild File 568 B 0644
arch_gicv3.h File 9.05 KB 0644
arch_timer.h File 2.48 KB 0644
arm-cci.h File 1.05 KB 0644
asm-offsets.h File 35 B 0644
assembler.h File 10.46 KB 0644
atomic.h File 13.22 KB 0644
auxvec.h File 29 B 0644
bL_switcher.h File 2.28 KB 0644
barrier.h File 2.84 KB 0644
bitops.h File 8.62 KB 0644
bitrev.h File 451 B 0644
bug.h File 2.46 KB 0644
bugs.h File 546 B 0644
cache.h File 813 B 0644
cacheflush.h File 15.54 KB 0644
cachetype.h File 2.71 KB 0644
checksum.h File 3.71 KB 0644
clocksource.h File 153 B 0644
cmpxchg.h File 6.14 KB 0644
compiler.h File 978 B 0644
cp15.h File 3.84 KB 0644
cpu.h File 533 B 0644
cpufeature.h File 1.4 KB 0644
cpuidle.h File 1.33 KB 0644
cputype.h File 8.42 KB 0644
cti.h File 3.62 KB 0644
dcc.h File 1.01 KB 0644
delay.h File 2.83 KB 0644
device.h File 771 B 0644
div64.h File 3.17 KB 0644
dma-contiguous.h File 265 B 0644
dma-iommu.h File 1.01 KB 0644
dma-mapping.h File 7.44 KB 0644
dma.h File 4.18 KB 0644
dmi.h File 528 B 0644
domain.h File 3.65 KB 0644
ecard.h File 5.98 KB 0644
edac.h File 1.51 KB 0644
efi.h File 3.04 KB 0644
elf.h File 4.52 KB 0644
entry-macro-multi.S File 726 B 0644
exception.h File 571 B 0644
fb.h File 375 B 0644
fiq.h File 1.36 KB 0644
firmware.h File 1.82 KB 0644
fixmap.h File 1.84 KB 0644
flat.h File 915 B 0644
floppy.h File 3.61 KB 0644
fncpy.h File 3.08 KB 0644
fpstate.h File 1.73 KB 0644
ftrace.h File 1.92 KB 0644
futex.h File 4.24 KB 0644
glue-cache.h File 3.51 KB 0644
glue-df.h File 2.2 KB 0644
glue-pf.h File 1.12 KB 0644
glue-proc.h File 4.46 KB 0644
glue.h File 759 B 0644
gpio.h File 693 B 0644
hardirq.h File 803 B 0644
highmem.h File 2.15 KB 0644
hugetlb-3level.h File 2.03 KB 0644
hugetlb.h File 1.78 KB 0644
hw_breakpoint.h File 3.53 KB 0644
hw_irq.h File 349 B 0644
hwcap.h File 378 B 0644
hypervisor.h File 140 B 0644
ide.h File 566 B 0644
idmap.h File 355 B 0644
insn.h File 636 B 0644
io.h File 15.96 KB 0644
irq.h File 1015 B 0644
irq_work.h File 234 B 0644
irqflags.h File 3.88 KB 0644
jump_label.h File 1009 B 0644
kexec-internal.h File 272 B 0644
kexec.h File 2.3 KB 0644
kgdb.h File 2.72 KB 0644
kmap_types.h File 190 B 0644
kprobes.h File 2.65 KB 0644
kvm_arm.h File 7.6 KB 0644
kvm_asm.h File 2.84 KB 0644
kvm_coproc.h File 1.99 KB 0644
kvm_emulate.h File 7.84 KB 0644
kvm_host.h File 10.31 KB 0644
kvm_hyp.h File 4.49 KB 0644
kvm_mmio.h File 1.34 KB 0644
kvm_mmu.h File 7.27 KB 0644
limits.h File 166 B 0644
linkage.h File 216 B 0644
mc146818rtc.h File 720 B 0644
mcpm.h File 11.92 KB 0644
mcs_spinlock.h File 570 B 0644
memblock.h File 248 B 0644
memory.h File 9.95 KB 0644
mmu.h File 953 B 0644
mmu_context.h File 3.94 KB 0644
module.h File 1.57 KB 0644
mpu.h File 2.15 KB 0644
mtd-xip.h File 666 B 0644
neon.h File 1.16 KB 0644
nwflash.h File 252 B 0644
opcodes-sec.h File 742 B 0644
opcodes-virt.h File 1.32 KB 0644
opcodes.h File 8.07 KB 0644
outercache.h File 3.78 KB 0644
page-nommu.h File 957 B 0644
page.h File 3.61 KB 0644
paravirt.h File 454 B 0644
patch.h File 438 B 0644
pci.h File 956 B 0644
percpu.h File 1.56 KB 0644
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pgtable-2level-hwdef.h File 3.45 KB 0644
pgtable-2level-types.h File 1.84 KB 0644
pgtable-2level.h File 8.51 KB 0644
pgtable-3level-hwdef.h File 3.95 KB 0644
pgtable-3level-types.h File 1.89 KB 0644
pgtable-3level.h File 9.54 KB 0644
pgtable-hwdef.h File 467 B 0644
pgtable-nommu.h File 2.51 KB 0644
pgtable.h File 11.71 KB 0644
probes.h File 1.73 KB 0644
proc-fns.h File 4.79 KB 0644
processor.h File 3.4 KB 0644
procinfo.h File 1.27 KB 0644
prom.h File 715 B 0644
psci.h File 771 B 0644
ptrace.h File 4.89 KB 0644
sections.h File 189 B 0644
set_memory.h File 1.04 KB 0644
setup.h File 934 B 0644
shmparam.h File 419 B 0644
signal.h File 500 B 0644
smp.h File 3.1 KB 0644
smp_plat.h File 2.48 KB 0644
smp_scu.h File 1.32 KB 0644
smp_twd.h File 908 B 0644
sparsemem.h File 716 B 0644
spectre.h File 906 B 0644
spinlock.h File 5.49 KB 0644
spinlock_types.h File 541 B 0644
stackprotector.h File 1.09 KB 0644
stacktrace.h File 742 B 0644
stage2_pgtable.h File 2.12 KB 0644
string.h File 1.43 KB 0644
suspend.h File 369 B 0644
swab.h File 1005 B 0644
switch_to.h File 1.03 KB 0644
sync_bitops.h File 1.03 KB 0644
syscall.h File 2.48 KB 0644
system_info.h File 763 B 0644
system_misc.h File 1.14 KB 0644
tcm.h File 937 B 0644
therm.h File 655 B 0644
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thread_notify.h File 1.2 KB 0644
timex.h File 577 B 0644
tlb.h File 7.37 KB 0644
tlbflush.h File 17.88 KB 0644
tls.h File 3.09 KB 0644
topology.h File 1.18 KB 0644
traps.h File 1.17 KB 0644
trusted_foundations.h File 2.29 KB 0644
uaccess-asm.h File 2.83 KB 0644
uaccess.h File 16.22 KB 0644
ucontext.h File 2.98 KB 0644
unaligned.h File 846 B 0644
unified.h File 1.61 KB 0644
unistd.h File 1.68 KB 0644
unwind.h File 1.71 KB 0644
uprobes.h File 1.07 KB 0644
user.h File 4.2 KB 0644
v7m.h File 2.93 KB 0644
vdso.h File 507 B 0644
vdso_datapage.h File 1.69 KB 0644
vfp.h File 2.86 KB 0644
vfpmacros.h File 2.1 KB 0644
vga.h File 305 B 0644
virt.h File 2.9 KB 0644
word-at-a-time.h File 2.08 KB 0644
xor.h File 5.22 KB 0644