Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _SPARC_VADDRS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _SPARC_VADDRS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <asm/head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * asm/vaddrs.h:  Here we define the virtual addresses at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *                      which important things will be mapped.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define SRMMU_MAXMEM		0x0c000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define SRMMU_NOCACHE_VADDR	(KERNBASE + SRMMU_MAXMEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 				/* = 0x0fc000000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* XXX Empiricals - this needs to go away - KMW */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define SRMMU_MIN_NOCACHE_PAGES (550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SRMMU_MAX_NOCACHE_PAGES	(1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * to determine the amount of memory that will be reserved as nocache:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * 256 pages will be taken as nocache per each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * SRMMU_NOCACHE_ALCRATIO MB of system memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  * limits enforced:	nocache minimum = 256 pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  *			nocache maximum = 1280 pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define SRMMU_NOCACHE_ALCRATIO	64	/* 256 pages per 64MB of system RAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/kmap_types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) enum fixed_addresses {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	FIX_HOLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #ifdef CONFIG_HIGHMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	FIX_KMAP_BEGIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	FIX_KMAP_END = (KM_TYPE_NR * NR_CPUS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	__end_of_fixed_addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* Leave one empty page between IO pages at 0xfd000000 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  * the top of the fixmap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define FIXADDR_TOP		(0xfcfff000UL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define FIXADDR_SIZE		((FIX_KMAP_END + 1) << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define __fix_to_virt(x)        (FIXADDR_TOP - ((x) << PAGE_SHIFT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define SUN4M_IOBASE_VADDR	0xfd000000 /* Base for mapping pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define IOBASE_VADDR		0xfe000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define IOBASE_END		0xfe600000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define KADB_DEBUGGER_BEGVM	0xffc00000 /* Where kern debugger is in virt-mem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define KADB_DEBUGGER_ENDVM	0xffd00000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define DEBUG_FIRSTVADDR	KADB_DEBUGGER_BEGVM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define DEBUG_LASTVADDR		KADB_DEBUGGER_ENDVM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define LINUX_OPPROM_BEGVM	0xffd00000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define LINUX_OPPROM_ENDVM	0xfff00000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define DVMA_VADDR		0xfff00000 /* Base area of the DVMA on suns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define DVMA_END		0xfffc0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #endif /* !(_SPARC_VADDRS_H) */