ArmPkg/ArmLib: Clean ArmV7Lib
- Move the non specific ArmV7 functions to ArmLib. - Clean the ARM Platform common components to not depend on ArmV7 if not required git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12453 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
@@ -1,358 +1,340 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#------------------------------------------------------------------------------
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.text
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.align 2
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GCC_ASM_EXPORT (ArmInvalidateInstructionCache)
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GCC_ASM_EXPORT (ArmInvalidateDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmCleanDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmCleanInvalidateDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmInvalidateDataCacheEntryBySetWay)
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GCC_ASM_EXPORT (ArmCleanDataCacheEntryBySetWay)
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GCC_ASM_EXPORT (ArmCleanInvalidateDataCacheEntryBySetWay)
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GCC_ASM_EXPORT (ArmDrainWriteBuffer)
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GCC_ASM_EXPORT (ArmEnableMmu)
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GCC_ASM_EXPORT (ArmDisableMmu)
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GCC_ASM_EXPORT (ArmDisableCachesAndMmu)
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GCC_ASM_EXPORT (ArmMmuEnabled)
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GCC_ASM_EXPORT (ArmEnableDataCache)
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GCC_ASM_EXPORT (ArmDisableDataCache)
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GCC_ASM_EXPORT (ArmEnableInstructionCache)
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GCC_ASM_EXPORT (ArmDisableInstructionCache)
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GCC_ASM_EXPORT (ArmEnableSWPInstruction)
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GCC_ASM_EXPORT (ArmEnableBranchPrediction)
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GCC_ASM_EXPORT (ArmDisableBranchPrediction)
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GCC_ASM_EXPORT (ArmSetLowVectors)
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GCC_ASM_EXPORT (ArmSetHighVectors)
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GCC_ASM_EXPORT (ArmV7AllDataCachesOperation)
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GCC_ASM_EXPORT (ArmDataMemoryBarrier)
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GCC_ASM_EXPORT (ArmDataSyncronizationBarrier)
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GCC_ASM_EXPORT (ArmInstructionSynchronizationBarrier)
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GCC_ASM_EXPORT (ArmWriteNsacr)
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GCC_ASM_EXPORT (ArmWriteScr)
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GCC_ASM_EXPORT (ArmWriteVMBar)
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GCC_ASM_EXPORT (ArmWriteVBar)
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GCC_ASM_EXPORT (ArmWriteCPACR)
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GCC_ASM_EXPORT (ArmEnableVFP)
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GCC_ASM_EXPORT (ArmCallWFI)
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GCC_ASM_EXPORT (ArmWriteAuxCr)
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GCC_ASM_EXPORT (ArmReadAuxCr)
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GCC_ASM_EXPORT (ArmReadCbar)
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GCC_ASM_EXPORT (ArmInvalidateInstructionAndDataTlb)
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GCC_ASM_EXPORT (ArmReadMpidr)
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GCC_ASM_EXPORT (ArmReadTpidrurw)
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GCC_ASM_EXPORT (ArmWriteTpidrurw)
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.set DC_ON, (0x1<<2)
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.set IC_ON, (0x1<<12)
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.set CTRL_M_BIT, (1 << 0)
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.set CTRL_C_BIT, (1 << 2)
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.set CTRL_B_BIT, (1 << 7)
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.set CTRL_I_BIT, (1 << 12)
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ASM_PFX(ArmInvalidateDataCacheEntryByMVA):
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mcr p15, 0, r0, c7, c6, 1 @invalidate single data cache line
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dsb
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isb
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bx lr
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ASM_PFX(ArmCleanDataCacheEntryByMVA):
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mcr p15, 0, r0, c7, c10, 1 @clean single data cache line
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dsb
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isb
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bx lr
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ASM_PFX(ArmCleanInvalidateDataCacheEntryByMVA):
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mcr p15, 0, r0, c7, c14, 1 @clean and invalidate single data cache line
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dsb
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isb
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bx lr
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ASM_PFX(ArmInvalidateDataCacheEntryBySetWay):
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mcr p15, 0, r0, c7, c6, 2 @ Invalidate this line
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dsb
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isb
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bx lr
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ASM_PFX(ArmCleanInvalidateDataCacheEntryBySetWay):
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mcr p15, 0, r0, c7, c14, 2 @ Clean and Invalidate this line
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dsb
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isb
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bx lr
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ASM_PFX(ArmCleanDataCacheEntryBySetWay):
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mcr p15, 0, r0, c7, c10, 2 @ Clean this line
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dsb
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isb
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bx lr
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ASM_PFX(ArmInvalidateInstructionCache):
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mcr p15,0,R0,c7,c5,0 @Invalidate entire instruction cache
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dsb
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isb
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bx LR
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ASM_PFX(ArmEnableMmu):
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mrc p15,0,R0,c1,c0,0
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orr R0,R0,#1
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mcr p15,0,R0,c1,c0,0
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dsb
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isb
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bx LR
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ASM_PFX(ArmDisableMmu):
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mrc p15,0,R0,c1,c0,0
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bic R0,R0,#1
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mcr p15,0,R0,c1,c0,0 @Disable MMU
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mcr p15,0,R0,c8,c7,0 @Invalidate TLB
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mcr p15,0,R0,c7,c5,6 @Invalidate Branch predictor array
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dsb
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isb
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bx LR
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ASM_PFX(ArmDisableCachesAndMmu):
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mrc p15, 0, r0, c1, c0, 0 @ Get control register
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bic r0, r0, #CTRL_M_BIT @ Disable MMU
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bic r0, r0, #CTRL_C_BIT @ Disable D Cache
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bic r0, r0, #CTRL_I_BIT @ Disable I Cache
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mcr p15, 0, r0, c1, c0, 0 @ Write control register
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dsb
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isb
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bx LR
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ASM_PFX(ArmMmuEnabled):
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mrc p15,0,R0,c1,c0,0
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and R0,R0,#1
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bx LR
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ASM_PFX(ArmEnableDataCache):
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ldr R1,=DC_ON
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mrc p15,0,R0,c1,c0,0 @Read control register configuration data
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orr R0,R0,R1 @Set C bit
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mcr p15,0,r0,c1,c0,0 @Write control register configuration data
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dsb
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isb
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bx LR
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ASM_PFX(ArmDisableDataCache):
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ldr R1,=DC_ON
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mrc p15,0,R0,c1,c0,0 @Read control register configuration data
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bic R0,R0,R1 @Clear C bit
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mcr p15,0,r0,c1,c0,0 @Write control register configuration data
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dsb
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isb
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bx LR
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ASM_PFX(ArmEnableInstructionCache):
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ldr R1,=IC_ON
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mrc p15,0,R0,c1,c0,0 @Read control register configuration data
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orr R0,R0,R1 @Set I bit
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mcr p15,0,r0,c1,c0,0 @Write control register configuration data
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dsb
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isb
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bx LR
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ASM_PFX(ArmDisableInstructionCache):
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ldr R1,=IC_ON
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mrc p15,0,R0,c1,c0,0 @Read control register configuration data
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bic R0,R0,R1 @Clear I bit.
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mcr p15,0,r0,c1,c0,0 @Write control register configuration data
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dsb
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isb
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bx LR
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ASM_PFX(ArmEnableSWPInstruction):
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #0x00000400
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mcr p15, 0, r0, c1, c0, 0
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isb
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bx LR
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ASM_PFX(ArmEnableBranchPrediction):
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mrc p15, 0, r0, c1, c0, 0
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orr r0, r0, #0x00000800
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mcr p15, 0, r0, c1, c0, 0
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dsb
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isb
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bx LR
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ASM_PFX(ArmDisableBranchPrediction):
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mrc p15, 0, r0, c1, c0, 0
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bic r0, r0, #0x00000800
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mcr p15, 0, r0, c1, c0, 0
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dsb
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isb
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bx LR
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ASM_PFX(ArmSetLowVectors):
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mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
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bic r0, r0, #0x00002000 @ clear V bit
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mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
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isb
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bx LR
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ASM_PFX(ArmSetHighVectors):
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mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
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orr r0, r0, #0x00002000 @ clear V bit
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mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
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isb
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bx LR
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ASM_PFX(ArmV7AllDataCachesOperation):
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stmfd SP!,{r4-r12, LR}
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mov R1, R0 @ Save Function call in R1
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mrc p15, 1, R6, c0, c0, 1 @ Read CLIDR
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ands R3, R6, #0x7000000 @ Mask out all but Level of Coherency (LoC)
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mov R3, R3, LSR #23 @ Cache level value (naturally aligned)
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beq L_Finished
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mov R10, #0
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Loop1:
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add R2, R10, R10, LSR #1 @ Work out 3xcachelevel
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mov R12, R6, LSR R2 @ bottom 3 bits are the Cache type for this level
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and R12, R12, #7 @ get those 3 bits alone
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cmp R12, #2
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blt L_Skip @ no cache or only instruction cache at this level
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mcr p15, 2, R10, c0, c0, 0 @ write the Cache Size selection register (CSSELR) // OR in 1 for Instruction
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isb @ isb to sync the change to the CacheSizeID reg
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mrc p15, 1, R12, c0, c0, 0 @ reads current Cache Size ID register (CCSIDR)
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and R2, R12, #0x7 @ extract the line length field
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add R2, R2, #4 @ add 4 for the line length offset (log2 16 bytes)
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@ ldr R4, =0x3FF
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mov R4, #0x400
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sub R4, R4, #1
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ands R4, R4, R12, LSR #3 @ R4 is the max number on the way size (right aligned)
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clz R5, R4 @ R5 is the bit position of the way size increment
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@ ldr R7, =0x00007FFF
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mov R7, #0x00008000
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sub R7, R7, #1
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ands R7, R7, R12, LSR #13 @ R7 is the max number of the index size (right aligned)
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Loop2:
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mov R9, R4 @ R9 working copy of the max way size (right aligned)
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Loop3:
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orr R0, R10, R9, LSL R5 @ factor in the way number and cache number into R11
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orr R0, R0, R7, LSL R2 @ factor in the index number
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blx R1
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subs R9, R9, #1 @ decrement the way number
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bge Loop3
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subs R7, R7, #1 @ decrement the index
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bge Loop2
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L_Skip:
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add R10, R10, #2 @ increment the cache number
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cmp R3, R10
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bgt Loop1
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L_Finished:
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dsb
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ldmfd SP!, {r4-r12, lr}
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bx LR
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ASM_PFX(ArmDataMemoryBarrier):
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dmb
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bx LR
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ASM_PFX(ArmDataSyncronizationBarrier):
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ASM_PFX(ArmDrainWriteBuffer):
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dsb
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bx LR
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ASM_PFX(ArmInstructionSynchronizationBarrier):
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isb
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bx LR
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ASM_PFX(ArmWriteNsacr):
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mcr p15, 0, r0, c1, c1, 2
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bx lr
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ASM_PFX(ArmWriteScr):
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mcr p15, 0, r0, c1, c1, 0
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bx lr
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ASM_PFX(ArmWriteAuxCr):
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mcr p15, 0, r0, c1, c0, 1
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bx lr
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ASM_PFX(ArmReadAuxCr):
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mrc p15, 0, r0, c1, c0, 1
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bx lr
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ASM_PFX(ArmWriteVMBar):
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mcr p15, 0, r0, c12, c0, 1
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bx lr
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ASM_PFX(ArmWriteVBar):
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# Set the Address of the Vector Table in the VBAR register
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mcr p15, 0, r0, c12, c0, 0
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# Ensure the SCTLR.V bit is clear
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mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
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bic r0, r0, #0x00002000 @ clear V bit
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mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
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isb
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bx lr
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ASM_PFX(ArmWriteCPACR):
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mcr p15, 0, r0, c1, c0, 2
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bx lr
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ASM_PFX(ArmEnableVFP):
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# Read CPACR (Coprocessor Access Control Register)
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mrc p15, 0, r0, c1, c0, 2
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# Enable VPF access (Full Access to CP10, CP11) (V* instructions)
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orr r0, r0, #0x00f00000
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# Write back CPACR (Coprocessor Access Control Register)
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mcr p15, 0, r0, c1, c0, 2
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# Set EN bit in FPEXC. The Advanced SIMD and VFP extensions are enabled and operate normally.
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mov r0, #0x40000000
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mcr p10,#0x7,r0,c8,c0,#0
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bx lr
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ASM_PFX(ArmCallWFI):
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wfi
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bx lr
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#Note: Return 0 in Uniprocessor implementation
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ASM_PFX(ArmReadCbar):
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mrc p15, 4, r0, c15, c0, 0 @ Read Configuration Base Address Register
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bx lr
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ASM_PFX(ArmInvalidateInstructionAndDataTlb):
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mcr p15, 0, r0, c8, c7, 0 @ Invalidate Inst TLB and Data TLB
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dsb
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bx lr
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ASM_PFX(ArmReadMpidr):
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mrc p15, 0, r0, c0, c0, 5 @ read MPIDR
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bx lr
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ASM_PFX(ArmReadTpidrurw):
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mrc p15, 0, r0, c13, c0, 2 @ read TPIDRURW
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bx lr
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ASM_PFX(ArmWriteTpidrurw):
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mcr p15, 0, r0, c13, c0, 2 @ write TPIDRURW
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bx lr
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ASM_FUNCTION_REMOVE_IF_UNREFERENCED
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
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||||
# Copyright (c) 2011, ARM Limited. All rights reserved.
|
||||
#
|
||||
# This program and the accompanying materials
|
||||
# are licensed and made available under the terms and conditions of the BSD License
|
||||
# which accompanies this distribution. The full text of the license may be found at
|
||||
# http://opensource.org/licenses/bsd-license.php
|
||||
#
|
||||
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
#
|
||||
#------------------------------------------------------------------------------
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.text
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.align 2
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GCC_ASM_EXPORT (ArmInvalidateInstructionCache)
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GCC_ASM_EXPORT (ArmInvalidateDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmCleanDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmCleanInvalidateDataCacheEntryByMVA)
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GCC_ASM_EXPORT (ArmInvalidateDataCacheEntryBySetWay)
|
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GCC_ASM_EXPORT (ArmCleanDataCacheEntryBySetWay)
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GCC_ASM_EXPORT (ArmCleanInvalidateDataCacheEntryBySetWay)
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GCC_ASM_EXPORT (ArmDrainWriteBuffer)
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GCC_ASM_EXPORT (ArmEnableMmu)
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GCC_ASM_EXPORT (ArmDisableMmu)
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GCC_ASM_EXPORT (ArmDisableCachesAndMmu)
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GCC_ASM_EXPORT (ArmMmuEnabled)
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GCC_ASM_EXPORT (ArmEnableDataCache)
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GCC_ASM_EXPORT (ArmDisableDataCache)
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GCC_ASM_EXPORT (ArmEnableInstructionCache)
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GCC_ASM_EXPORT (ArmDisableInstructionCache)
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GCC_ASM_EXPORT (ArmEnableSWPInstruction)
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GCC_ASM_EXPORT (ArmEnableBranchPrediction)
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GCC_ASM_EXPORT (ArmDisableBranchPrediction)
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GCC_ASM_EXPORT (ArmSetLowVectors)
|
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GCC_ASM_EXPORT (ArmSetHighVectors)
|
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GCC_ASM_EXPORT (ArmV7AllDataCachesOperation)
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GCC_ASM_EXPORT (ArmDataMemoryBarrier)
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GCC_ASM_EXPORT (ArmDataSyncronizationBarrier)
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GCC_ASM_EXPORT (ArmInstructionSynchronizationBarrier)
|
||||
GCC_ASM_EXPORT (ArmWriteVBar)
|
||||
GCC_ASM_EXPORT (ArmEnableVFP)
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||||
GCC_ASM_EXPORT (ArmCallWFI)
|
||||
GCC_ASM_EXPORT (ArmReadCbar)
|
||||
GCC_ASM_EXPORT (ArmInvalidateInstructionAndDataTlb)
|
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GCC_ASM_EXPORT (ArmReadMpidr)
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GCC_ASM_EXPORT (ArmReadTpidrurw)
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GCC_ASM_EXPORT (ArmWriteTpidrurw)
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GCC_ASM_EXPORT (ArmIsArchTimerImplemented)
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GCC_ASM_EXPORT (ArmReadIdPfr1)
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.set DC_ON, (0x1<<2)
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.set IC_ON, (0x1<<12)
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.set CTRL_M_BIT, (1 << 0)
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.set CTRL_C_BIT, (1 << 2)
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.set CTRL_B_BIT, (1 << 7)
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.set CTRL_I_BIT, (1 << 12)
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ASM_PFX(ArmInvalidateDataCacheEntryByMVA):
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mcr p15, 0, r0, c7, c6, 1 @invalidate single data cache line
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dsb
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isb
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bx lr
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ASM_PFX(ArmCleanDataCacheEntryByMVA):
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mcr p15, 0, r0, c7, c10, 1 @clean single data cache line
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dsb
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isb
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bx lr
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||||
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||||
|
||||
ASM_PFX(ArmCleanInvalidateDataCacheEntryByMVA):
|
||||
mcr p15, 0, r0, c7, c14, 1 @clean and invalidate single data cache line
|
||||
dsb
|
||||
isb
|
||||
bx lr
|
||||
|
||||
|
||||
ASM_PFX(ArmInvalidateDataCacheEntryBySetWay):
|
||||
mcr p15, 0, r0, c7, c6, 2 @ Invalidate this line
|
||||
dsb
|
||||
isb
|
||||
bx lr
|
||||
|
||||
|
||||
ASM_PFX(ArmCleanInvalidateDataCacheEntryBySetWay):
|
||||
mcr p15, 0, r0, c7, c14, 2 @ Clean and Invalidate this line
|
||||
dsb
|
||||
isb
|
||||
bx lr
|
||||
|
||||
|
||||
ASM_PFX(ArmCleanDataCacheEntryBySetWay):
|
||||
mcr p15, 0, r0, c7, c10, 2 @ Clean this line
|
||||
dsb
|
||||
isb
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmInvalidateInstructionCache):
|
||||
mcr p15,0,R0,c7,c5,0 @Invalidate entire instruction cache
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmEnableMmu):
|
||||
mrc p15,0,R0,c1,c0,0
|
||||
orr R0,R0,#1
|
||||
mcr p15,0,R0,c1,c0,0
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
|
||||
ASM_PFX(ArmDisableMmu):
|
||||
mrc p15,0,R0,c1,c0,0
|
||||
bic R0,R0,#1
|
||||
mcr p15,0,R0,c1,c0,0 @Disable MMU
|
||||
|
||||
mcr p15,0,R0,c8,c7,0 @Invalidate TLB
|
||||
mcr p15,0,R0,c7,c5,6 @Invalidate Branch predictor array
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDisableCachesAndMmu):
|
||||
mrc p15, 0, r0, c1, c0, 0 @ Get control register
|
||||
bic r0, r0, #CTRL_M_BIT @ Disable MMU
|
||||
bic r0, r0, #CTRL_C_BIT @ Disable D Cache
|
||||
bic r0, r0, #CTRL_I_BIT @ Disable I Cache
|
||||
mcr p15, 0, r0, c1, c0, 0 @ Write control register
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmMmuEnabled):
|
||||
mrc p15,0,R0,c1,c0,0
|
||||
and R0,R0,#1
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmEnableDataCache):
|
||||
ldr R1,=DC_ON
|
||||
mrc p15,0,R0,c1,c0,0 @Read control register configuration data
|
||||
orr R0,R0,R1 @Set C bit
|
||||
mcr p15,0,r0,c1,c0,0 @Write control register configuration data
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDisableDataCache):
|
||||
ldr R1,=DC_ON
|
||||
mrc p15,0,R0,c1,c0,0 @Read control register configuration data
|
||||
bic R0,R0,R1 @Clear C bit
|
||||
mcr p15,0,r0,c1,c0,0 @Write control register configuration data
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmEnableInstructionCache):
|
||||
ldr R1,=IC_ON
|
||||
mrc p15,0,R0,c1,c0,0 @Read control register configuration data
|
||||
orr R0,R0,R1 @Set I bit
|
||||
mcr p15,0,r0,c1,c0,0 @Write control register configuration data
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDisableInstructionCache):
|
||||
ldr R1,=IC_ON
|
||||
mrc p15,0,R0,c1,c0,0 @Read control register configuration data
|
||||
bic R0,R0,R1 @Clear I bit.
|
||||
mcr p15,0,r0,c1,c0,0 @Write control register configuration data
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmEnableSWPInstruction):
|
||||
mrc p15, 0, r0, c1, c0, 0
|
||||
orr r0, r0, #0x00000400
|
||||
mcr p15, 0, r0, c1, c0, 0
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmEnableBranchPrediction):
|
||||
mrc p15, 0, r0, c1, c0, 0
|
||||
orr r0, r0, #0x00000800
|
||||
mcr p15, 0, r0, c1, c0, 0
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDisableBranchPrediction):
|
||||
mrc p15, 0, r0, c1, c0, 0
|
||||
bic r0, r0, #0x00000800
|
||||
mcr p15, 0, r0, c1, c0, 0
|
||||
dsb
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmSetLowVectors):
|
||||
mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
|
||||
bic r0, r0, #0x00002000 @ clear V bit
|
||||
mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmSetHighVectors):
|
||||
mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
|
||||
orr r0, r0, #0x00002000 @ clear V bit
|
||||
mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmV7AllDataCachesOperation):
|
||||
stmfd SP!,{r4-r12, LR}
|
||||
mov R1, R0 @ Save Function call in R1
|
||||
mrc p15, 1, R6, c0, c0, 1 @ Read CLIDR
|
||||
ands R3, R6, #0x7000000 @ Mask out all but Level of Coherency (LoC)
|
||||
mov R3, R3, LSR #23 @ Cache level value (naturally aligned)
|
||||
beq L_Finished
|
||||
mov R10, #0
|
||||
|
||||
Loop1:
|
||||
add R2, R10, R10, LSR #1 @ Work out 3xcachelevel
|
||||
mov R12, R6, LSR R2 @ bottom 3 bits are the Cache type for this level
|
||||
and R12, R12, #7 @ get those 3 bits alone
|
||||
cmp R12, #2
|
||||
blt L_Skip @ no cache or only instruction cache at this level
|
||||
mcr p15, 2, R10, c0, c0, 0 @ write the Cache Size selection register (CSSELR) // OR in 1 for Instruction
|
||||
isb @ isb to sync the change to the CacheSizeID reg
|
||||
mrc p15, 1, R12, c0, c0, 0 @ reads current Cache Size ID register (CCSIDR)
|
||||
and R2, R12, #0x7 @ extract the line length field
|
||||
add R2, R2, #4 @ add 4 for the line length offset (log2 16 bytes)
|
||||
@ ldr R4, =0x3FF
|
||||
mov R4, #0x400
|
||||
sub R4, R4, #1
|
||||
ands R4, R4, R12, LSR #3 @ R4 is the max number on the way size (right aligned)
|
||||
clz R5, R4 @ R5 is the bit position of the way size increment
|
||||
@ ldr R7, =0x00007FFF
|
||||
mov R7, #0x00008000
|
||||
sub R7, R7, #1
|
||||
ands R7, R7, R12, LSR #13 @ R7 is the max number of the index size (right aligned)
|
||||
|
||||
Loop2:
|
||||
mov R9, R4 @ R9 working copy of the max way size (right aligned)
|
||||
|
||||
Loop3:
|
||||
orr R0, R10, R9, LSL R5 @ factor in the way number and cache number into R11
|
||||
orr R0, R0, R7, LSL R2 @ factor in the index number
|
||||
|
||||
blx R1
|
||||
|
||||
subs R9, R9, #1 @ decrement the way number
|
||||
bge Loop3
|
||||
subs R7, R7, #1 @ decrement the index
|
||||
bge Loop2
|
||||
L_Skip:
|
||||
add R10, R10, #2 @ increment the cache number
|
||||
cmp R3, R10
|
||||
bgt Loop1
|
||||
|
||||
L_Finished:
|
||||
dsb
|
||||
ldmfd SP!, {r4-r12, lr}
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDataMemoryBarrier):
|
||||
dmb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmDataSyncronizationBarrier):
|
||||
ASM_PFX(ArmDrainWriteBuffer):
|
||||
dsb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmInstructionSynchronizationBarrier):
|
||||
isb
|
||||
bx LR
|
||||
|
||||
ASM_PFX(ArmWriteVBar):
|
||||
# Set the Address of the Vector Table in the VBAR register
|
||||
mcr p15, 0, r0, c12, c0, 0
|
||||
# Ensure the SCTLR.V bit is clear
|
||||
mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
|
||||
bic r0, r0, #0x00002000 @ clear V bit
|
||||
mcr p15, 0, r0, c1, c0, 0 @ Write R0 into SCTLR (Write control register configuration data)
|
||||
isb
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmEnableVFP):
|
||||
# Read CPACR (Coprocessor Access Control Register)
|
||||
mrc p15, 0, r0, c1, c0, 2
|
||||
# Enable VPF access (Full Access to CP10, CP11) (V* instructions)
|
||||
orr r0, r0, #0x00f00000
|
||||
# Write back CPACR (Coprocessor Access Control Register)
|
||||
mcr p15, 0, r0, c1, c0, 2
|
||||
# Set EN bit in FPEXC. The Advanced SIMD and VFP extensions are enabled and operate normally.
|
||||
mov r0, #0x40000000
|
||||
mcr p10,#0x7,r0,c8,c0,#0
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmCallWFI):
|
||||
wfi
|
||||
bx lr
|
||||
|
||||
#Note: Return 0 in Uniprocessor implementation
|
||||
ASM_PFX(ArmReadCbar):
|
||||
mrc p15, 4, r0, c15, c0, 0 @ Read Configuration Base Address Register
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmInvalidateInstructionAndDataTlb):
|
||||
mcr p15, 0, r0, c8, c7, 0 @ Invalidate Inst TLB and Data TLB
|
||||
dsb
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmReadMpidr):
|
||||
mrc p15, 0, r0, c0, c0, 5 @ read MPIDR
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmReadTpidrurw):
|
||||
mrc p15, 0, r0, c13, c0, 2 @ read TPIDRURW
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmWriteTpidrurw):
|
||||
mcr p15, 0, r0, c13, c0, 2 @ write TPIDRURW
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmIsArchTimerImplemented):
|
||||
mrc p15, 0, r0, c0, c1, 1 @ Read ID_PFR1
|
||||
and r0, r0, #0x000F0000
|
||||
bx lr
|
||||
|
||||
ASM_PFX(ArmReadIdPfr1):
|
||||
mrc p15, 0, r0, c0, c1, 1 @ Read ID_PFR1 Register
|
||||
bx lr
|
||||
|
||||
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
|
||||
|
Reference in New Issue
Block a user