f0abe42fd7
Fix GCC issue on FspInfoHeaderRelativeOff. Clean up comments for platform ID matching on Microcode and PcdFspBootFirmwareVolumeBase Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> Reviewed-by: "Rangarajan, Ravi P" <ravi.p.rangarajan@intel.com> Reviewed-by: "Mudusuru, Giri P" <giri.p.mudusuru@intel.com> Reviewed-by: "Ma, Maurice" <maurice.ma@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17496 6f19259b-4bc3-4df7-8a09-765794883524
72 lines
2.2 KiB
ArmAsm
72 lines
2.2 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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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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# Abstract:
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#
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# Provide FSP helper function.
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#
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#------------------------------------------------------------------------------
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#
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# FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress
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# from the FSP Info header.
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#
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ASM_GLOBAL ASM_PFX(FspInfoHeaderRelativeOff)
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ASM_PFX(FspInfoHeaderRelativeOff):
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#
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# This value will be pached by the build script
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#
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.long 0x012345678
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#
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# Returns FSP Base Address.
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#
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# This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure
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#
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ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddress)
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ASM_PFX(AsmGetFspBaseAddress):
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mov $AsmGetFspBaseAddress, %eax
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sub FspInfoHeaderRelativeOff, %eax
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add $0x01C, %eax
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mov (%eax), %eax
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ret
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#
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# No stack counter part of AsmGetFspBaseAddress. Return address is in edi.
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#
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ASM_GLOBAL ASM_PFX(AsmGetFspBaseAddressNoStack)
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ASM_PFX(AsmGetFspBaseAddressNoStack):
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mov $AsmGetFspBaseAddress, %eax
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sub FspInfoHeaderRelativeOff, %eax
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add $0x01C, %eax
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mov (%eax), %eax
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jmp *%edi
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#
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# Returns FSP Info Header.
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#
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# This function gets the FSP Info Header using relative addressing and returns it
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#
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ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeader)
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ASM_PFX(AsmGetFspInfoHeader):
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mov $AsmGetFspBaseAddress, %eax
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sub FspInfoHeaderRelativeOff, %eax
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ret
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#
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# No stack counter part of AsmGetFspInfoHeader. Return address is in edi.
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#
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ASM_GLOBAL ASM_PFX(AsmGetFspInfoHeaderNoStack)
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ASM_PFX(AsmGetFspInfoHeaderNoStack):
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mov $AsmGetFspBaseAddress, %eax
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sub FspInfoHeaderRelativeOff, %eax
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jmp *%edi
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