OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	11/17/2022 06:42:15 AM	rwxr-xr-x
📄 Kbuild	886 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-offsets.h	35 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atomic.h	5.27 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 bitops.h	6.62 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 cache.h	1.16 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cacheflush.h	3.8 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 checksum.h	1.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cmpxchg.h	2.55 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 delay.h	978 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma-mapping.h	1.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma.h	934 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 elf.h	6.34 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 exec.h	1.01 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fixmap.h	1.11 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fpu.h	90 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 futex.h	2.25 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 hexagon_vm.h	6.39 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 intrinsics.h	1003 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 io.h	6.95 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 irq.h	1.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags.h	1.46 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kgdb.h	1.36 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 linkage.h	871 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mem-layout.h	3.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu.h	1.1 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu_context.h	2.59 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 module.h	910 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 page.h	4.74 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 perf_event.h	841 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgalloc.h	4.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable.h	14.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 processor.h	3.8 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 smp.h	1.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 spinlock.h	3.84 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 spinlock_types.h	1.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 string.h	1.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 suspend.h	872 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 switch_to.h	1.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 syscall.h	1.38 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 thread_info.h	4.05 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 time.h	980 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 timer-regs.h	1.23 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 timex.h	1.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlb.h	1.21 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlbflush.h	2.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 traps.h	1.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess.h	3.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 vdso.h	941 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 vm_fault.h	993 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 vm_mmu.h	3.37 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: vm_mmu.h

/*
 * Hexagon VM page table entry definitions
 *
 * Copyright (c) 2010-2011,2013 The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef _ASM_VM_MMU_H
#define _ASM_VM_MMU_H

/*
 * Shift, mask, and other constants for the Hexagon Virtual Machine
 * page tables.
 *
 * Virtual machine MMU allows first-level entries to either be
 * single-level lookup PTEs for very large pages, or PDEs pointing
 * to second-level PTEs for smaller pages. If PTE is single-level,
 * the least significant bits cannot be used as software bits to encode
 * virtual memory subsystem information about the page, and that state
 * must be maintained in some parallel data structure.
 */

/* S or Page Size field in PDE */
#define	__HVM_PDE_S		(0x7 << 0)
#define __HVM_PDE_S_4KB		0
#define __HVM_PDE_S_16KB	1
#define __HVM_PDE_S_64KB	2
#define __HVM_PDE_S_256KB	3
#define __HVM_PDE_S_1MB		4
#define __HVM_PDE_S_4MB		5
#define __HVM_PDE_S_16MB	6
#define __HVM_PDE_S_INVALID	7

/* Masks for L2 page table pointer, as function of page size */
#define __HVM_PDE_PTMASK_4KB	0xfffff000
#define __HVM_PDE_PTMASK_16KB	0xfffffc00
#define __HVM_PDE_PTMASK_64KB	0xffffff00
#define __HVM_PDE_PTMASK_256KB	0xffffffc0
#define __HVM_PDE_PTMASK_1MB	0xfffffff0

/*
 * Virtual Machine PTE Bits/Fields
 */
#define __HVM_PTE_T		(1<<4)
#define __HVM_PTE_U		(1<<5)
#define	__HVM_PTE_C		(0x7<<6)
#define __HVM_PTE_CVAL(pte)	(((pte) & __HVM_PTE_C) >> 6)
#define __HVM_PTE_R		(1<<9)
#define __HVM_PTE_W		(1<<10)
#define __HVM_PTE_X		(1<<11)

/*
 * Cache Attributes, to be shifted as necessary for virtual/physical PTEs
 */

#define __HEXAGON_C_WB		0x0	/* Write-back, no L2 */
#define	__HEXAGON_C_WT		0x1	/* Write-through, no L2 */
#define	__HEXAGON_C_UNC		0x6	/* Uncached memory */
#if CONFIG_HEXAGON_ARCH_VERSION >= 2
#define	__HEXAGON_C_DEV		0x4	/* Device register space */
#else
#define __HEXAGON_C_DEV		__HEXAGON_C_UNC
#endif
#define	__HEXAGON_C_WT_L2	0x5	/* Write-through, with L2 */
#define	__HEXAGON_C_WB_L2	0x7	/* Write-back, with L2 */

/*
 * This can be overridden, but we're defaulting to the most aggressive
 * cache policy, the better to find bugs sooner.
 */

#define	CACHE_DEFAULT	__HEXAGON_C_WB_L2

/* Masks for physical page address, as a function of page size */

#define __HVM_PTE_PGMASK_4KB	0xfffff000
#define __HVM_PTE_PGMASK_16KB	0xffffc000
#define __HVM_PTE_PGMASK_64KB	0xffff0000
#define __HVM_PTE_PGMASK_256KB	0xfffc0000
#define __HVM_PTE_PGMASK_1MB	0xfff00000

/* Masks for single-level large page lookups */

#define __HVM_PTE_PGMASK_4MB	0xffc00000
#define __HVM_PTE_PGMASK_16MB	0xff000000

/*
 * "Big kernel page mappings" (see vm_init_segtable.S)
 * are currently 16MB
 */

#define BIG_KERNEL_PAGE_SHIFT 24
#define BIG_KERNEL_PAGE_SIZE (1 << BIG_KERNEL_PAGE_SHIFT)

#endif /* _ASM_VM_MMU_H */