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* OvmfPkg: Add QemuFwCfgLibNullRebecca Cran2020-05-052-0/+239
| | | | | | | | | | | | | | Add a null implementation library for QemuFwCfgLib, in order to support building PciHostBridgeLib for bhyve. Signed-off-by: Rebecca Cran <rebecca@bsdio.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200503230910.26783-1-rebecca@bsdio.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg: replace old EFI_D_ debug levels with new DEBUG_ onesRebecca Cran2020-04-304-11/+11
| | | | | | | | | | | | | Generated mechanically with: find OvmfPkg -type f -exec sed -i -e 's/EFI_D_/DEBUG_/g' {} \; Signed-off-by: Rebecca Cran <rebecca@bsdio.com> Cc: Philippe Mathieu-Daude <philmd@redhat.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Laszlo Ersek <lersek@redhat.com> Message-Id: <20200429215327.606467-1-rebecca@bsdio.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg/QemuFwCfgDxeLib: allow UEFI_DRIVER modulesLaszlo Ersek2020-04-281-1/+1
| | | | | | | | | | | | | | | | | | | | We don't distribute UEFI_DRIVER modules stand-alone that were built as part of an OVMF platform. OVMF's UEFI_DRIVERs are allowed to inherit platform dependencies. By enabling UEFI_DRIVERs to consume QemuFwCfgDxeLib, we can hook fw_cfg-based NULL class libraries into UEFI drivers, e.g. in order to set dynamic PCDs. Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Per Sundstrom <per_sundstrom@yahoo.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2681 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20200424075353.8489-5-lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* OvmfPkg/Qemu: Fix various typosAntoine Coeur2020-02-101-1/+1
| | | | | | | | | | | | | | | | | | | | Fix various typos in comments and documentation. When "VbeShim.asm" is modified, we have to re-run "VbeShim.sh" to update "VbeShim.h". The string modified by this patch is only used when the DEBUG macro (at the top of the file) is commented out. Since the string is not referenced, NASM eliminates it, resulting in the same byte array content in "VbeShim.h". Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Antoine Coeur <coeur@gmx.fr> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com> Message-Id: <20200207010831.9046-58-philmd@redhat.com>
* OvmfPkg: strip trailing whitespaceLeif Lindholm2019-10-041-1/+1
| | | | | | | | | | | | | Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
* OvmfPkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney2019-04-098-56/+8
| | | | | | | | | | | | | | | | | | | | https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg/QemuFwCfgDxeLib: SEV: zero FW_CFG_DMA_ACCESS before decrypting itLaszlo Ersek2017-08-291-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | There's a small window between - AllocFwCfgDmaAccessBuffer() mapping the new FW_CFG_DMA_ACCESS object for common buffer operation (i.e., decrypting it), and - InternalQemuFwCfgDmaBytes() setting the fields of the object. In this window, earlier garbage in the object is "leaked" to the hypervisor. So zero the object before we decrypt it. (This commit message references AMD SEV directly, because QemuFwCfgDxeLib is not *generally* enabled for IOMMU operation just yet, unlike our goal for the virtio infrastructure. Instead, QemuFwCfgDxeLib uses MemEncryptSevLib explicitly to detect SEV, and then relies on IOMMU protocol behavior that is specific to SEV. At this point, this is by design.) Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
* OvmfPkg/QemuFwCfgLib: Use BusMasterCommonBuffer to map FW_CFG_DMA_ACCESSBrijesh Singh2017-08-055-292/+367
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 09719a01b11b (OvmfPkg/QemuFwCfgLib: Implement SEV internal function for Dxe phase) uses IOMMU protocol to allocate and free FW_CFG_DMA_ACCESS buffer when SEV is active. During initial commits we made assumption that IOMMU.AllocateBuffer() will provide PlainTextAddress (i.e C-bit cleared). This assumption was wrong, the AllocateBuffer() protocol member is not expected to produce a buffer that is immediatly usable, and client is required to call Map() uncondtionally with BusMasterCommonBuffer[64] to get a mapping which is accessable by both host and device. The patch refactors code a bit and add the support to Map() FW_CFG_DMA_ACCESS buffer using BusMasterCommonBuffer operation after allocation and Unamp() before free. The complete discussion about this and recommendation from Laszlo can be found here [1] [1] https://lists.01.org/pipermail/edk2-devel/2017-July/012652.html Suggested-by: Laszlo Ersek <lersek@redhat.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> [lersek@redhat.com: convert pointers to UINTN before converting to UINT64] [lersek@redhat.com: fix argument indentation in multi-line function call] [lersek@redhat.com: explicitly compare pointers to NULL] Reviewed-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg/QemuFwCfgLib: Suppress GCC49 IA32 build failureBrijesh Singh2017-07-121-0/+5
| | | | | | | | | | | | | | | | | | | | NumPages variable was introduced in commit 66c548be509d. In this commit we allocate an intermediate buffer when SEV is enabled. The 'BounceBuffer' variable points to the intermediate buffer pointer and NumPages variables stores the number of pages. Later in the code, 'BounceBuffer' variable is checked to see if we need to free the intermediate buffers. The code looks correct, suppress the warning. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reported-by: Gerd Hoffmann <kraxel@redhat.com> Reported-by: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> [lersek@redhat.com: s/warnigns/warnings/ in the code comment] [lersek@redhat.com: add Gerd's Reported-by] Signed-off-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg/QemuFwCfgLib: Add SEV supportBrijesh Singh2017-07-101-2/+52
| | | | | | | | | | | When SEV is enabled, use a bounce buffer to perform the DMA operation. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: Add option to dynamic alloc FW_CFG_DMA AccessBrijesh Singh2017-07-101-7/+10
| | | | | | | | | | | | | Update InternalQemuFwCfgDmaBytes() to work with DMA Access pointer. The change provides the flexibility to dynamically allocate the "Access" when SEV is enabled. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: Implement SEV internal function for Dxe phaseBrijesh Singh2017-07-102-0/+121
| | | | | | | | | | | | | | When SEV is enabled, the DMA must be performed on unencrypted pages. So when get asked to perfom FWCFG DMA read or write, we allocate a intermediate (bounce buffer) unencrypted buffer and use this buffer for DMA read or write. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
* OvmfPkg/QemuFwCfgLib: Implement SEV internal functions for PEI phaseBrijesh Singh2017-07-102-2/+71
| | | | | | | | | Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: Implement SEV internal function for SEC phaseBrijesh Singh2017-07-101-0/+57
| | | | | | | | | Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: Prepare for SEV supportBrijesh Singh2017-07-101-0/+37
| | | | | | | | | | | | Add SEV specific internal functions which will be used while intergrating the SEV support into QemuFwCfgLib. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: Provide Pei and Dxe specific libraryBrijesh Singh2017-07-104-4/+170
| | | | | | | | | | | | | Current QemuFwCfgLib.inf is used in both Pei and Dxe phases. Add Pei and Dxe inf file to provide a seperate QemuFwCfgLib instances for Pei and Dxe phases. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* ArmVirtPkg, OvmfPkg: retire QemuFwCfgS3Enabled() from QemuFwCfgLibLaszlo Ersek2017-03-141-28/+0
| | | | | | | | | | | | | | | | | | | | At this point we're ready to retire QemuFwCfgS3Enabled() from the QemuFwCfgLib class, together with its implementations in: - ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c - OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c Extend all modules that call the function with a new QemuFwCfgS3Lib class dependency. Thanks to the previously added library class, instances, and class resolutions, we can do this switch now as tightly as possible. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=394 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
* OvmfPkg/QemuFwCfg: introduce FW_CFG_IO_DMA_ADDRESS, adapt the packageLaszlo Ersek2017-02-221-2/+2
| | | | | | | | | | | | Introduce the FW_CFG_IO_DMA_ADDRESS macro for IO Ports 0x514 and 0x518 (most significant and least significant halves of the DMA Address Register, respectively), and update all references in OvmfPkg. Cc: Jordan Justen <jordan.l.justen@intel.com> Suggested-by: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfg: introduce FW_CFG_IO_DATA, adapt the packageLaszlo Ersek2017-02-221-3/+3
| | | | | | | | | | | Introduce the FW_CFG_IO_DATA macro for IO Port 0x511 (the Data Register), and update all references in OvmfPkg. Cc: Jordan Justen <jordan.l.justen@intel.com> Suggested-by: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfg: introduce FW_CFG_IO_SELECTOR, adapt the packageLaszlo Ersek2017-02-221-1/+1
| | | | | | | | | | | Introduce the FW_CFG_IO_SELECTOR macro for IO Port 0x510 (the Selector Register), and update all references in OvmfPkg. Cc: Jordan Justen <jordan.l.justen@intel.com> Suggested-by: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: add QemuFwCfgSkipBytes()Laszlo Ersek2017-01-311-0/+44
| | | | | | | | | | | | | | | | | | | | | Introduce the new public API QemuFwCfgSkipBytes(), for advancing over bytes in the selected firmware configuration item without transferring data between the item and the caller. When the DMA interface is available (the common case), the operation is instantaneous. As a fallback, provide a loop of chunked reads into a small stack-allocated scratch buffer. This patch enables OvmfPkg/QemuFwCfgLib to overwrite part of a writeable fw_cfg file, which will be particularly useful for the upcoming QEMU_LOADER_WRITE_POINTER command in OvmfPkg/AcpiPlatformDxe. Cc: Jordan Justen <jordan.l.justen@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: generalize InternalQemuFwCfgDmaBytes() to SKIP opLaszlo Ersek2017-01-311-12/+19
| | | | | | | | | | | | | | The fw_cfg DMA interface provides a simple method to skip over bytes in an fw_cfg blob before reading or writing more bytes. InternalQemuFwCfgDmaBytes() can support it easily, we just have to expose the Control parameter more flexibly than the current "Write" BOOLEAN. Cc: Jordan Justen <jordan.l.justen@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=359 Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg: Modify QemuFwCfgLib to use new IoLib class libraryLeo Duran2017-01-175-172/+3
| | | | | | | | | | | | | The Fifo routines from the QuemuFwCfgLib library have been ported to the new BaseIoLibIntrinsic (IoLib class) library. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Leo Duran <leo.duran@amd.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: support QEMU's DMA-like fw_cfg access methodLaszlo Ersek2016-12-054-1/+124
| | | | | | | | | | | | | | | | | | | | | The benefits of the DMA-like access method are (a) speed, (b) write support in QEMU 2.9+. (IOPort-based write support was discontinued in QEMU 2.4, and the DMA-based one is being added to QEMU 2.9. Write support needs no separate feature detection because writeability is governed on the level of individual fw_cfg files -- if a file meant to be written by the firmware exists in the directory, then it is writeable with the DMA method.) We don't enable this feature for the SEC library instance, because: - the SEC instance remains without clients (I've checked that it builds though), - in SEC, any possible fw_cfg use is expected to be small and read-only. Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg/QemuFwCfgLib: move InternalQemuFwCfgIsAvailable() to lib instancesLaszlo Ersek2016-12-056-2/+40
| | | | | | | | | | | | | | | | | | InternalQemuFwCfgIsAvailable() is an API that is incorrectly exposed by the "OvmfPkg/Include/Library/QemuFwCfgLib.h" library class header; the API is meant to be used internally to library instances (if it's needed at all). In OvmfPkg, we have two lib instances (for SEC and PEI/DXE); they provide different implementations of InternalQemuFwCfgIsAvailable(), for the shared file "OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c". Move the API declaration to a new internal header called "QemuFwCfgLibInternal.h", and drop EFIAPI in the process. Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
* OvmfPkg: QemuFwCfgLib: avoid "variable set but not used" warning from GCCBill Paul2015-07-101-0/+1
| | | | | | | | | | | | | | | | The FileReserved variable in QemuFwCfgFindFile() is only used to skip over the reserved field in file headers, which causes newer versions of GCC to flag it with a "variable set but not used" warning (which is normally not visible since as of right now these warnings are supressed). It's true that the value read into FileReserved is never used, but this is intentional. This patch adds a do-nothing reference to silence the warning. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Bill Paul <wpaul@windriver.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17920 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg QemuFwCfgLib: Convert X64/IoLibExAsm.asm to NASMJordan Justen2014-10-314-61/+8
| | | | | | | | | | | The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert X64/IoLibExAsm.asm to X64/IoLibExAsm.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16290 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg QemuFwCfgLib: Convert Ia32/IoLibExAsm.asm to NASMJordan Justen2014-10-314-68/+7
| | | | | | | | | | | The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert Ia32/IoLibExAsm.asm to Ia32/IoLibExAsm.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16289 6f19259b-4bc3-4df7-8a09-765794883524
* OvmgPkg: QemuFwCfgLib: export QEMU_FW_CFG_FNAME_SIZELaszlo Ersek2014-06-191-1/+1
| | | | | | | | | | | | Names of firmware configuration files always take 56 bytes (including at least one terminating NUL byte). Expose this constant to all consumers of QemuFwCfgLib because further interfaces may depend on it. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15571 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg QemuFwCfgLib: determine if S3 support is explicitly enabledLaszlo Ersek2014-03-041-0/+28
| | | | | | | | | | | | | | | Such a packaged query function will come in handy in the following patches. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> [jordan.l.justen@intel.com: check for enabled rather than disabled] Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15292 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: QemuFwCfgLib: implement for SECLaszlo Ersek2014-01-032-0/+135
| | | | | | | | | | | | | | | | The QemuFwCfgSecLib library instance - is stateless, - has no library constructor, - is available to SEC client code, - must be queried with QemuFwCfgIsAvailable() before use, - is restricted to SEC in order to limit the explicit querying requirement. (There is no current user.) Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15046 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: QemuFwCfgLib: extract stateful implementationLaszlo Ersek2014-01-033-75/+97
| | | | | | | | | | | | | | | | | | | | | | The current implementation of QemuFwCfgLib is: - stateful - implicitly initialized in the library constructor. OVMF's SEC runs from read-only memory/flash. When the library is linked into a SEC binary (which currently never happens), the "mQemuFwCfgSupported" global variable becomes read-only, making the library non-functional. Extract the stateful, implicitly initialized library implementation into a separate file, making room for a stateless, explicitly queried implementation that's usable in SEC. Restrict the stateful implementation to the current, non-SEC clients. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15045 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: QemuFwCfgLib: introduce InternalQemuFwCfgIsAvailable()Laszlo Ersek2014-01-031-4/+26
| | | | | | | | | | | | | | | This internal function allows separation of library-internal and for-clients external availability of fw_cfg. The interface contract of QemuFwCfgIsAvailable() is changed so that now it may modify fw_cfg state. All current users are compliant with the new contract. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15044 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: QemuFwCfgLib: drop bogus dependency on UefiBootServicesTableLibLaszlo Ersek2013-12-261-1/+0
| | | | | | | | Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15024 6f19259b-4bc3-4df7-8a09-765794883524
* QemuFwCfgLib: Add QemuFwCfgWriteBytes() functionjljusten2013-01-285-5/+133
| | | | | | | | Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14109 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg QemuFwCfgLib: Fix broken IA32 Microsoft assembler codejljusten2013-01-281-1/+1
| | | | | | | | Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14108 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: introduce QemuFwCfgFindFile ()jljusten2012-07-231-0/+53
| | | | | | | | | | | | | | | Tested with the "bootorder" fw_cfg file. Example contents (leading space added and line terminators transcribed for readability): /pci@i0cf8/ide@1,1/drive@0/disk@0<LF> /pci@i0cf8/ide@1,1/drive@1/disk@0<LF> /pci@i0cf8/ethernet@3/ethernet-phy@0<NUL> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13549 6f19259b-4bc3-4df7-8a09-765794883524
* OvmfPkg: Add QemuFwCfgLib library class and implementationjljusten2012-05-306-0/+437
QEMU's Firmware Configuration interface gives the firmware access to various types of information. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13383 6f19259b-4bc3-4df7-8a09-765794883524
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 23:01:00 +0000