cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vaddrs.h (2066B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _SPARC_VADDRS_H
      3#define _SPARC_VADDRS_H
      4
      5#include <asm/head.h>
      6
      7/*
      8 * asm/vaddrs.h:  Here we define the virtual addresses at
      9 *                      which important things will be mapped.
     10 *
     11 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
     12 * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
     13 */
     14
     15#define SRMMU_MAXMEM		0x0c000000
     16
     17#define SRMMU_NOCACHE_VADDR	(KERNBASE + SRMMU_MAXMEM)
     18				/* = 0x0fc000000 */
     19/* XXX Empiricals - this needs to go away - KMW */
     20#define SRMMU_MIN_NOCACHE_PAGES (550)
     21#define SRMMU_MAX_NOCACHE_PAGES	(1280)
     22
     23/* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize()
     24 * to determine the amount of memory that will be reserved as nocache:
     25 *
     26 * 256 pages will be taken as nocache per each
     27 * SRMMU_NOCACHE_ALCRATIO MB of system memory.
     28 *
     29 * limits enforced:	nocache minimum = 256 pages
     30 *			nocache maximum = 1280 pages
     31 */
     32#define SRMMU_NOCACHE_ALCRATIO	64	/* 256 pages per 64MB of system RAM */
     33
     34#ifndef __ASSEMBLY__
     35#include <asm/kmap_size.h>
     36
     37enum fixed_addresses {
     38	FIX_HOLE,
     39#ifdef CONFIG_HIGHMEM
     40	FIX_KMAP_BEGIN,
     41	FIX_KMAP_END = (KM_MAX_IDX * NR_CPUS),
     42#endif
     43	__end_of_fixed_addresses
     44};
     45#endif
     46
     47/* Leave one empty page between IO pages at 0xfd000000 and
     48 * the top of the fixmap.
     49 */
     50#define FIXADDR_TOP		(0xfcfff000UL)
     51#define FIXADDR_SIZE		((FIX_KMAP_END + 1) << PAGE_SHIFT)
     52#define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
     53
     54#define __fix_to_virt(x)        (FIXADDR_TOP - ((x) << PAGE_SHIFT))
     55
     56#define SUN4M_IOBASE_VADDR	0xfd000000 /* Base for mapping pages */
     57#define IOBASE_VADDR		0xfe000000
     58#define IOBASE_END		0xfe600000
     59
     60#define KADB_DEBUGGER_BEGVM	0xffc00000 /* Where kern debugger is in virt-mem */
     61#define KADB_DEBUGGER_ENDVM	0xffd00000
     62#define DEBUG_FIRSTVADDR	KADB_DEBUGGER_BEGVM
     63#define DEBUG_LASTVADDR		KADB_DEBUGGER_ENDVM
     64
     65#define LINUX_OPPROM_BEGVM	0xffd00000
     66#define LINUX_OPPROM_ENDVM	0xfff00000
     67
     68#define DVMA_VADDR		0xfff00000 /* Base area of the DVMA on suns */
     69#define DVMA_END		0xfffc0000
     70
     71#endif /* !(_SPARC_VADDRS_H) */