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haiku/headers/private/system/arch/arm/arch_cpu_defs.h

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Added private system arch specific arch_cpu_defs.h header, currently defining only a SPINLOCK_PAUSE() macro. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36351 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-19 18:16:48 +04:00
/*
kernel/arm: detect read/write access in data abort handler Use Data Fault Status Register's bit 11 to initialize isWrite. see: ARMv7 Architecture Reference Manual,section B3.9.5 Distinguishing read and write accesses on Data Abort exceptions Change-Id: I7da6702fc0e9579e5cb09cba3c5c89f004ec268a Reviewed-on: https://review.haiku-os.org/c/haiku/+/4972 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Jérôme Duval <jerome.duval@gmail.com> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-02-18 19:41:52 +03:00
* Copyright 2022, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
Added private system arch specific arch_cpu_defs.h header, currently defining only a SPINLOCK_PAUSE() macro. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36351 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-19 18:16:48 +04:00
* Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef _SYSTEM_ARCH_ARM_DEFS_H
#define _SYSTEM_ARCH_ARM_DEFS_H
#define SPINLOCK_PAUSE() do {} while (false)
kernel/arm: implement prefetch abort handler Change-Id: I39c330a44ad36ede41c7727017dd733d07288be9 Reviewed-on: https://review.haiku-os.org/c/haiku/+/4983 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
2022-02-24 22:41:57 +03:00
#define CPSR_MODE_MASK 0x1f
#define CPSR_MODE_USR 0x10
kernel/arm: clean up arch-specific defines * align fault syndrome and fault address register naming with ARM Architecture Reference Manual (i.e. IFSR, DFSR, IFAR, DFAR) * move PSR bitfield defines to arch_cpu_defs.h Change-Id: I813045eec335ffbdd75270ad5a1afb2f222f73c8 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5618 Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com> Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
2022-09-04 20:09:26 +03:00
#define CPSR_MODE_FIQ 0x11
#define CPSR_MODE_IRQ 0x12
kernel/arm: implement entering userspace Change-Id: Icf3945db979a8f4444856fc7157649f48b297c29 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5037 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-02-28 15:35:08 +03:00
#define CPSR_MODE_SVC 0x13
kernel/arm: clean up arch-specific defines * align fault syndrome and fault address register naming with ARM Architecture Reference Manual (i.e. IFSR, DFSR, IFAR, DFAR) * move PSR bitfield defines to arch_cpu_defs.h Change-Id: I813045eec335ffbdd75270ad5a1afb2f222f73c8 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5618 Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com> Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
2022-09-04 20:09:26 +03:00
#define CPSR_MODE_ABT 0x17
#define CPSR_MODE_UND 0x1b
kernel/arm: implement entering userspace Change-Id: Icf3945db979a8f4444856fc7157649f48b297c29 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5037 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-02-28 15:35:08 +03:00
#define CPSR_MODE_SYS 0x1f
#define CPSR_T 0x20
#define CPSR_F 0x40
#define CPSR_I 0x80
kernel/arm: implement prefetch abort handler Change-Id: I39c330a44ad36ede41c7727017dd733d07288be9 Reviewed-on: https://review.haiku-os.org/c/haiku/+/4983 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
2022-02-24 22:41:57 +03:00
kernel/arm: don't set Accessed Flag when initially mapping a page Pages should not be marked as accessed when initially mapping them. However, there's a short interval during kernel startup when new pages are mapped but the fault handler is not installed yet. Therefore, we set Accessed Flag to 1 in early_map. Once the kernel initialization has progressed enough, we start mapping new pages with Accessed Flag set to 0. The chicken and egg problem of initially mapping the vector page is tackled by preallocating the vector page in the boot loader. Change-Id: Ie3be4f81812d7a090af57e8c79420598d16182b9 Reviewed-on: https://review.haiku-os.org/c/haiku/+/6450 Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com> Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
2023-05-30 20:21:31 +03:00
#define SCTLR_HIGH_VECTORS 0x00002000
kernel/arm: detect read/write access in data abort handler Use Data Fault Status Register's bit 11 to initialize isWrite. see: ARMv7 Architecture Reference Manual,section B3.9.5 Distinguishing read and write accesses on Data Abort exceptions Change-Id: I7da6702fc0e9579e5cb09cba3c5c89f004ec268a Reviewed-on: https://review.haiku-os.org/c/haiku/+/4972 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Jérôme Duval <jerome.duval@gmail.com> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-02-18 19:41:52 +03:00
#define FSR_WNR 0x800
kernel/arm: check for PXN and alignment fault in page fault handler Change-Id: I2a863b57b1252343c9c029d1bb5af8d328558576 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5620 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-09-05 14:44:07 +03:00
#define FSR_LPAE 0x200
#define FSR_FS_ALIGNMENT_FAULT 0x01
kernel/arm: check for access flag fault in page fault handler Change-Id: Icc782a692e5dcd861958ffea934386b4d4e569c7 Reviewed-on: https://review.haiku-os.org/c/haiku/+/6428 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2023-05-09 22:40:04 +03:00
#define FSR_FS_ACCESS_FLAG_FAULT 0x06
kernel/arm: check for PXN and alignment fault in page fault handler Change-Id: I2a863b57b1252343c9c029d1bb5af8d328558576 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5620 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: waddlesplash <waddlesplash@gmail.com>
2022-09-05 14:44:07 +03:00
#define FSR_FS_PERMISSION_FAULT_L1 0x0d
#define FSR_FS_PERMISSION_FAULT_L2 0x0f
Added private system arch specific arch_cpu_defs.h header, currently defining only a SPINLOCK_PAUSE() macro. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36351 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-19 18:16:48 +04:00
kernel/arm/paging: implement Modified Flag * Introduce SWDBM flag similarly to the arm64 port * Reuse TEX[2] for SWDBM flag which should be availble to be used by the operating system if TEX remap is enabled. * Introduce SetAndClearPageTableEntryFlags for updating accessed and modified flags atomically * Startup sequence is handled similarly to accessed flag, i.e. set Modified flag in initially mapped pages in bootloader and early map. * Once the kernel initialization has progressed enough, pages are mapped as read-only and modified flag handling is done in the page fault handler. Change-Id: I8f761e2c6325d1b91481abd569d5e8befded0761 Reviewed-on: https://review.haiku-os.org/c/haiku/+/6518 Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org> Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
2023-06-15 16:08:46 +03:00
#define FSR_FS_MASK 0x040f
#define FSR_LPAE_MASK 0x0200
Added private system arch specific arch_cpu_defs.h header, currently defining only a SPINLOCK_PAUSE() macro. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36351 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-19 18:16:48 +04:00
#endif /* _SYSTEM_ARCH_ARM_DEFS_H */
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