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 _ASM_FIXMAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _ASM_FIXMAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * This file defines the locations of the fixed mappings on parisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * All of the values in this file are machine virtual addresses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * All of the values in this file must be <4GB (because of assembly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * loading restrictions).  If you place this region anywhere above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * __PAGE_OFFSET, you must adjust the memory map accordingly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* The alias region is used in kernel space to do copy/clear to or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * from areas congruently mapped with user space.  It is 8MB large
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * and must be 16MB aligned */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define TMPALIAS_MAP_START	((__PAGE_OFFSET) - 16*1024*1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define FIXMAP_SIZE		(FIX_BITMAP_COUNT << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define FIXMAP_START		(TMPALIAS_MAP_START - FIXMAP_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* This is the kernel area for all maps (vmalloc, dma etc.)  most
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * usually, it extends up to TMPALIAS_MAP_START.  Virtual addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define KERNEL_MAP_START	(GATEWAY_PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define KERNEL_MAP_END		(FIXMAP_START)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) enum fixed_addresses {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	/* Support writing RO kernel text via kprobes, jump labels, etc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	FIX_TEXT_POKE0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	FIX_TEXT_KEXEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	FIX_BITMAP_COUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern void *parisc_vmalloc_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define PCXL_DMA_MAP_SIZE	(8*1024*1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define VMALLOC_START		((unsigned long)parisc_vmalloc_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define VMALLOC_END		(KERNEL_MAP_END)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define __fix_to_virt(_x) (FIXMAP_START + ((_x) << PAGE_SHIFT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) void set_fixmap(enum fixed_addresses idx, phys_addr_t phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void clear_fixmap(enum fixed_addresses idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #endif /*__ASSEMBLY__*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #endif /*_ASM_FIXMAP_H*/