+++ /dev/null
-//------------------------------------------------------------------------------ \r
-//\r
-// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
-// Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r
-//\r
-// This program and the accompanying materials\r
-// are licensed and made available under the terms and conditions of the BSD License\r
-// which accompanies this distribution. The full text of the license may be found at\r
-// http://opensource.org/licenses/bsd-license.php\r
-//\r
-// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-//\r
-//------------------------------------------------------------------------------\r
-\r
-#include <AsmMacroIoLib.h>\r
- \r
- INCLUDE AsmMacroIoLib.inc\r
-\r
-#ifdef ARM_CPU_ARMv6\r
-// No memory barriers for ARMv6\r
-#define isb\r
-#define dsb\r
-#endif\r
-\r
- EXPORT Cp15IdCode\r
- EXPORT Cp15CacheInfo\r
- EXPORT ArmGetInterruptState\r
- EXPORT ArmGetFiqState\r
- EXPORT ArmGetTTBR0BaseAddress\r
- EXPORT ArmSetTTBR0\r
- EXPORT ArmSetDomainAccessControl\r
- EXPORT CPSRMaskInsert\r
- EXPORT CPSRRead\r
- EXPORT ArmReadCpacr\r
- EXPORT ArmWriteCpacr\r
- EXPORT ArmWriteAuxCr\r
- EXPORT ArmReadAuxCr\r
- EXPORT ArmInvalidateTlb\r
- EXPORT ArmUpdateTranslationTableEntry\r
- EXPORT ArmReadNsacr\r
- EXPORT ArmWriteNsacr\r
- EXPORT ArmReadScr\r
- EXPORT ArmWriteScr\r
- EXPORT ArmReadMVBar\r
- EXPORT ArmWriteMVBar\r
- EXPORT ArmCallWFE\r
- EXPORT ArmCallSEV\r
- EXPORT ArmReadSctlr\r
-\r
- AREA ArmLibSupport, CODE, READONLY\r
-\r
-Cp15IdCode\r
- mrc p15,0,R0,c0,c0,0\r
- bx LR\r
-\r
-Cp15CacheInfo\r
- mrc p15,0,R0,c0,c0,1\r
- bx LR\r
-\r
-ArmGetInterruptState\r
- mrs R0,CPSR\r
- tst R0,#0x80 // Check if IRQ is enabled.\r
- moveq R0,#1\r
- movne R0,#0\r
- bx LR\r
-\r
-ArmGetFiqState\r
- mrs R0,CPSR\r
- tst R0,#0x40 // Check if FIQ is enabled.\r
- moveq R0,#1\r
- movne R0,#0\r
- bx LR\r
-\r
-ArmSetDomainAccessControl\r
- mcr p15,0,r0,c3,c0,0\r
- bx lr\r
-\r
-CPSRMaskInsert // on entry, r0 is the mask and r1 is the field to insert\r
- stmfd sp!, {r4-r12, lr} // save all the banked registers\r
- mov r3, sp // copy the stack pointer into a non-banked register\r
- mrs r2, cpsr // read the cpsr\r
- bic r2, r2, r0 // clear mask in the cpsr\r
- and r1, r1, r0 // clear bits outside the mask in the input\r
- orr r2, r2, r1 // set field\r
- msr cpsr_cxsf, r2 // write back cpsr (may have caused a mode switch)\r
- isb\r
- mov sp, r3 // restore stack pointer\r
- ldmfd sp!, {r4-r12, lr} // restore registers\r
- bx lr // return (hopefully thumb-safe!) // return (hopefully thumb-safe!)\r
-\r
-CPSRRead\r
- mrs r0, cpsr\r
- bx lr\r
-\r
-ArmReadCpacr\r
- mrc p15, 0, r0, c1, c0, 2\r
- bx lr\r
-\r
-ArmWriteCpacr\r
- mcr p15, 0, r0, c1, c0, 2\r
- isb\r
- bx lr\r
-\r
-ArmWriteAuxCr\r
- mcr p15, 0, r0, c1, c0, 1\r
- bx lr\r
-\r
-ArmReadAuxCr\r
- mrc p15, 0, r0, c1, c0, 1\r
- bx lr \r
-\r
-ArmSetTTBR0\r
- mcr p15,0,r0,c2,c0,0\r
- isb\r
- bx lr\r
-\r
-ArmGetTTBR0BaseAddress\r
- mrc p15,0,r0,c2,c0,0\r
- LoadConstantToReg(0xFFFFC000, r1)\r
- and r0, r0, r1\r
- isb\r
- bx lr\r
-\r
-//\r
-//VOID\r
-//ArmUpdateTranslationTableEntry (\r
-// IN VOID *TranslationTableEntry // R0\r
-// IN VOID *MVA // R1\r
-// );\r
-ArmUpdateTranslationTableEntry\r
- mcr p15,0,R0,c7,c14,1 // DCCIMVAC Clean data cache by MVA\r
- dsb\r
- mcr p15,0,R1,c8,c7,1 // TLBIMVA TLB Invalidate MVA\r
- mcr p15,0,R9,c7,c5,6 // BPIALL Invalidate Branch predictor array. R9 == NoOp\r
- dsb\r
- isb\r
- bx lr\r
-\r
-ArmInvalidateTlb\r
- mov r0,#0\r
- mcr p15,0,r0,c8,c7,0\r
- mcr p15,0,R9,c7,c5,6 // BPIALL Invalidate Branch predictor array. R9 == NoOp\r
- dsb\r
- isb\r
- bx lr\r
-\r
-ArmReadNsacr\r
- mrc p15, 0, r0, c1, c1, 2\r
- bx lr\r
-\r
-ArmWriteNsacr\r
- mcr p15, 0, r0, c1, c1, 2\r
- bx lr\r
-\r
-ArmReadScr\r
- mrc p15, 0, r0, c1, c1, 0\r
- bx lr\r
-\r
-ArmWriteScr\r
- mcr p15, 0, r0, c1, c1, 0\r
- bx lr\r
-\r
-ArmReadMVBar\r
- mrc p15, 0, r0, c12, c0, 1\r
- bx lr\r
-\r
-ArmWriteMVBar\r
- mcr p15, 0, r0, c12, c0, 1\r
- bx lr\r
- \r
-ArmCallWFE\r
- wfe\r
- blx lr\r
-\r
-ArmCallSEV\r
- sev\r
- blx lr\r
-\r
-ArmReadSctlr\r
- mrc p15, 0, R0, c1, c0, 0 // Read SCTLR into R0 (Read control register configuration data)\r
- bx lr\r
-\r
- END\r