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author | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
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committer | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
commit | 2ef2b01e07c02db339f34004445734a2dbdd80e1 (patch) | |
tree | 19532a6be8d8bdb0aef04bd00c1efb582f6dc841 /ArmPkg/Library/ArmLib/Common/ArmLibSupport.S | |
parent | f7753a96ba1653ddd31b01c198a352f6332ac404 (diff) | |
download | edk2-platforms-2ef2b01e07c02db339f34004445734a2dbdd80e1.tar.xz |
Adding support for BeagleBoard.
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers.
EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell.
BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine).
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/ArmLib/Common/ArmLibSupport.S')
-rw-r--r-- | ArmPkg/Library/ArmLib/Common/ArmLibSupport.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/Common/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/ArmLibSupport.S new file mode 100644 index 0000000000..d80100c788 --- /dev/null +++ b/ArmPkg/Library/ArmLib/Common/ArmLibSupport.S @@ -0,0 +1,89 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2008-2009 Apple Inc. All rights reserved. +# +# 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. +# +#------------------------------------------------------------------------------ + +.text +.align 2 +.globl ASM_PFX(Cp15IdCode) +.globl ASM_PFX(Cp15CacheInfo) +.globl ASM_PFX(ArmEnableInterrupts) +.globl ASM_PFX(ArmDisableInterrupts) +.globl ASM_PFX(ArmGetInterruptState) +.globl ASM_PFX(ArmInvalidateTlb) +.globl ASM_PFX(ArmSetTranslationTableBaseAddress) +.globl ASM_PFX(ArmSetDomainAccessControl) +.globl ASM_PFX(CPSRMaskInsert) +.globl ASM_PFX(CPSRRead) + +#------------------------------------------------------------------------------ + +ASM_PFX(Cp15IdCode): + mrc p15,0,R0,c0,c0,0 + bx LR + +ASM_PFX(Cp15CacheInfo): + mrc p15,0,R0,c0,c0,1 + bx LR + +ASM_PFX(ArmEnableInterrupts): + mrs R0,CPSR + bic R0,R0,#0x80 @Enable IRQ interrupts + msr CPSR_c,R0 + bx LR + +ASM_PFX(ArmDisableInterrupts): + mrs R0,CPSR + orr R1,R0,#0x80 @Disable IRQ interrupts + msr CPSR_c,R1 + tst R0,#0x80 + moveq R0,#1 + movne R0,#0 + bx LR + +ASM_PFX(ArmGetInterruptState): + mrs R0,CPSR + tst R0,#0x80 @Check if IRQ is enabled. + moveq R0,#1 + movne R0,#0 + bx LR + +ASM_PFX(ArmInvalidateTlb): + mov r0,#0 + mcr p15,0,r0,c8,c7,0 + bx lr + +ASM_PFX(ArmSetTranslationTableBaseAddress): + mcr p15,0,r0,c2,c0,0 + bx lr + +ASM_PFX(ArmSetDomainAccessControl): + mcr p15,0,r0,c3,c0,0 + bx lr + +ASM_PFX(CPSRMaskInsert): @ on entry, r0 is the mask and r1 is the field to insert + stmfd sp!, {r4-r12, lr} @ save all the banked registers + mov r3, sp @ copy the stack pointer into a non-banked register + mrs r2, cpsr @ read the cpsr + bic r2, r2, r0 @ clear mask in the cpsr + and r1, r1, r0 @ clear bits outside the mask in the input + orr r2, r2, r1 @ set field + msr cpsr_cxsf, r2 @ write back cpsr (may have caused a mode switch) + mov sp, r3 @ restore stack pointer + ldmfd sp!, {r4-r12, lr} @ restore registers + bx lr @ return (hopefully thumb-safe!) + +ASM_PFX(CPSRRead): + mrs r0, cpsr + bx lr + +ASM_FUNCTION_REMOVE_IF_UNREFERENCED |