99dc5c0ca9
Presently address translation is default-enabled regardless of whether CONFIG_MMU is set or not in the SH-4 case, this fixes it up, and also makes the control init word a bit more readable in the process. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
82 lines
2 KiB
C
82 lines
2 KiB
C
/*
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* include/asm-sh/cpu-sh4/mmu_context.h
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*
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* Copyright (C) 1999 Niibe Yutaka
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef __ASM_CPU_SH4_MMU_CONTEXT_H
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#define __ASM_CPU_SH4_MMU_CONTEXT_H
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#define MMU_PTEH 0xFF000000 /* Page table entry register HIGH */
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#define MMU_PTEL 0xFF000004 /* Page table entry register LOW */
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#define MMU_TTB 0xFF000008 /* Translation table base register */
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#define MMU_TEA 0xFF00000C /* TLB Exception Address */
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#define MMU_PTEA 0xFF000034 /* PTE assistance register */
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#define MMU_PTEAEX 0xFF00007C /* PTE ASID extension register */
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#define MMUCR 0xFF000010 /* MMU Control Register */
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#define MMU_TLB_ENTRY_SHIFT 8
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#define MMU_ITLB_ADDRESS_ARRAY 0xF2000000
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#define MMU_ITLB_ADDRESS_ARRAY2 0xF2800000
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#define MMU_ITLB_DATA_ARRAY 0xF3000000
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#define MMU_ITLB_DATA_ARRAY2 0xF3800000
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#define MMU_UTLB_ADDRESS_ARRAY 0xF6000000
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#define MMU_UTLB_ADDRESS_ARRAY2 0xF6800000
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#define MMU_UTLB_DATA_ARRAY 0xF7000000
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#define MMU_UTLB_DATA_ARRAY2 0xF7800000
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#define MMU_PAGE_ASSOC_BIT 0x80
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#ifdef CONFIG_MMU
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#define MMUCR_AT (1 << 0)
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#else
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#define MMUCR_AT (0)
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#endif
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#define MMUCR_TI (1 << 2)
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#define MMUCR_URB 0x00FC0000
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#define MMUCR_URB_SHIFT 18
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#define MMUCR_URB_NENTRIES 64
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#define MMUCR_URC 0x0000FC00
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#define MMUCR_URC_SHIFT 10
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#if defined(CONFIG_32BIT) && defined(CONFIG_CPU_SUBTYPE_ST40)
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#define MMUCR_SE (1 << 4)
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#else
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#define MMUCR_SE (0)
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#endif
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#ifdef CONFIG_CPU_HAS_PTEAEX
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#define MMUCR_AEX (1 << 6)
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#else
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#define MMUCR_AEX (0)
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#endif
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#ifdef CONFIG_X2TLB
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#define MMUCR_ME (1 << 7)
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#else
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#define MMUCR_ME (0)
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#endif
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#ifdef CONFIG_SH_STORE_QUEUES
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#define MMUCR_SQMD (1 << 9)
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#else
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#define MMUCR_SQMD (0)
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#endif
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#define MMU_NTLB_ENTRIES 64
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#define MMU_CONTROL_INIT (MMUCR_AT | MMUCR_TI | MMUCR_SQMD | \
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MMUCR_ME | MMUCR_SE | MMUCR_AEX)
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#define TRA 0xff000020
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#define EXPEVT 0xff000024
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#define INTEVT 0xff000028
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#endif /* __ASM_CPU_SH4_MMU_CONTEXT_H */
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