mirror of https://github.com/acidanthera/audk.git
Enable NEON (SIMD instructions) via coprocessor register so CopyMem/SetMem can use VLDM and friends if you want.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10386 6f19259b-4bc3-4df7-8a09-765794883524
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@ -36,6 +36,14 @@ ASM_PFX(_ModuleEntryPoint):
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orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */
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orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */
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mcr p15, 0, r0, c1, c0, 0
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mcr p15, 0, r0, c1, c0, 0
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// Enable NEON register in case folks want to use them for optimizations (CopyMem)
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mrc p15, 0, r0, c1, c0, 2
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orr r0, r0, #0x00f00000 // Enable VPF access (V* instructions)
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mcr p15, 0, r0, c1, c0, 2
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mov r0, #0x40000000 // Set EN bit in FPEXC
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mcr p10,#0x7,r0,c8,c0,#0 // msr FPEXC,r0 in ARM assembly
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// Set CPU vectors to start of DRAM
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// Set CPU vectors to start of DRAM
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LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base
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LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base
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mcr p15, 0, r0, c12, c0, 0
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mcr p15, 0, r0, c12, c0, 0
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@ -39,6 +39,13 @@ _ModuleEntryPoint
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orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */
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orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */
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mcr p15, 0, r0, c1, c0, 0
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mcr p15, 0, r0, c1, c0, 0
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// Enable NEON register in case folks want to use them for optimizations (CopyMem)
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mrc p15, 0, r0, c1, c0, 2
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orr r0, r0, #0x00f00000 // Enable VPF access (V* instructions)
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mcr p15, 0, r0, c1, c0, 2
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mov r0, #0x40000000 // Set EN bit in FPEXC
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msr FPEXC,r0
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// Set CPU vectors to start of DRAM
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// Set CPU vectors to start of DRAM
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LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base
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LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base
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mcr p15, 0, r0, c12, c0, 0
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mcr p15, 0, r0, c12, c0, 0
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