diff options
Diffstat (limited to 'arch/cris/include/arch-v32/arch/mmu.h')
| -rw-r--r-- | arch/cris/include/arch-v32/arch/mmu.h | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/cris/include/arch-v32/arch/mmu.h b/arch/cris/include/arch-v32/arch/mmu.h deleted file mode 100644 index a8eec1312de0..000000000000 --- a/arch/cris/include/arch-v32/arch/mmu.h +++ /dev/null @@ -1,111 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_CRIS_ARCH_MMU_H -#define _ASM_CRIS_ARCH_MMU_H - -/* MMU context type. */ -typedef struct -{ - unsigned int page_id; -} mm_context_t; - -/* Kernel memory segments. */ -#define KSEG_F 0xf0000000UL -#define KSEG_E 0xe0000000UL -#define KSEG_D 0xd0000000UL -#define KSEG_C 0xc0000000UL -#define KSEG_B 0xb0000000UL -#define KSEG_A 0xa0000000UL -#define KSEG_9 0x90000000UL -#define KSEG_8 0x80000000UL -#define KSEG_7 0x70000000UL -#define KSEG_6 0x60000000UL -#define KSEG_5 0x50000000UL -#define KSEG_4 0x40000000UL -#define KSEG_3 0x30000000UL -#define KSEG_2 0x20000000UL -#define KSEG_1 0x10000000UL -#define KSEG_0 0x00000000UL - -/* - * CRISv32 PTE bits: - * - * Bit: 31 30-13 12-5 4 3 2 1 0 - * +-------+-----+------+--------+-------+--------+-------+---------+ - * | cache | pfn | zero | global | valid | kernel | write | execute | - * +-------+-----+------+--------+-------+--------+-------+---------+ - */ - -/* - * Defines for accessing the bits. Also define some synonyms for use with - * the software-based defined bits below. - */ -#define _PAGE_EXECUTE (1 << 0) /* Execution bit. */ -#define _PAGE_WE (1 << 1) /* Write bit. */ -#define _PAGE_SILENT_WRITE (1 << 1) /* Same as above. */ -#define _PAGE_KERNEL (1 << 2) /* Kernel mode page. */ -#define _PAGE_VALID (1 << 3) /* Page is valid. */ -#define _PAGE_SILENT_READ (1 << 3) /* Same as above. */ -#define _PAGE_GLOBAL (1 << 4) /* Global page. */ -#define _PAGE_NO_CACHE (1 << 31) /* part of the uncached memory map */ - - -/* - * The hardware doesn't care about these bits, but the kernel uses them in - * software. - */ -#define _PAGE_PRESENT (1 << 5) /* Page is present in memory. */ -#define _PAGE_ACCESSED (1 << 6) /* Simulated in software using valid bit. */ -#define _PAGE_MODIFIED (1 << 7) /* Simulated in software using we bit. */ -#define _PAGE_READ (1 << 8) /* Read enabled. */ -#define _PAGE_WRITE (1 << 9) /* Write enabled. */ - -/* Define some higher level generic page attributes. */ -#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED) -#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED) - -#define _PAGE_TABLE (_PAGE_PRESENT | __READABLE | __WRITEABLE) -#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED) - -#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED) -#define PAGE_SHARED __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_WRITE | \ - _PAGE_ACCESSED) -#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_WRITE | \ - _PAGE_ACCESSED | _PAGE_EXECUTE) - -#define PAGE_READONLY __pgprot(_PAGE_PRESENT | __READABLE) -#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_EXECUTE | _PAGE_ACCESSED) - -#define PAGE_COPY __pgprot(_PAGE_PRESENT | __READABLE) -#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_EXECUTE) -#define PAGE_KERNEL __pgprot(_PAGE_GLOBAL | _PAGE_KERNEL | \ - _PAGE_PRESENT | __READABLE | __WRITEABLE) -#define PAGE_KERNEL_EXEC __pgprot(_PAGE_GLOBAL | _PAGE_KERNEL | _PAGE_EXECUTE | \ - _PAGE_PRESENT | __READABLE | __WRITEABLE) -#define PAGE_SIGNAL_TRAMPOLINE __pgprot(_PAGE_GLOBAL | _PAGE_EXECUTE | \ - _PAGE_PRESENT | __READABLE) - -#define _KERNPG_TABLE (_PAGE_TABLE | _PAGE_KERNEL) - -/* CRISv32 can do page protection for execute. - * Write permissions imply read permissions. - * Note that the numbers are in Execute-Write-Read order! - */ -#define __P000 PAGE_NONE -#define __P001 PAGE_READONLY -#define __P010 PAGE_COPY -#define __P011 PAGE_COPY -#define __P100 PAGE_READONLY_EXEC -#define __P101 PAGE_READONLY_EXEC -#define __P110 PAGE_COPY_EXEC -#define __P111 PAGE_COPY_EXEC - -#define __S000 PAGE_NONE -#define __S001 PAGE_READONLY -#define __S010 PAGE_SHARED -#define __S011 PAGE_SHARED -#define __S100 PAGE_READONLY_EXEC -#define __S101 PAGE_READONLY_EXEC -#define __S110 PAGE_SHARED_EXEC -#define __S111 PAGE_SHARED_EXEC - -#endif /* _ASM_CRIS_ARCH_MMU_H */ |