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2018-11-19ArmVirtPkg/PrePi: clear frame pointer in startup codeArd Biesheuvel1-0/+3
When setting up the stack in the startup code and jumping into C code for the first time, ensure that the frame pointer register is cleared so that backtraces terminate correctly. Otherwise, output like the below is shown when encountering an exception on a DEBUG build: Synchronous Exception at 0x0000000078A14780 PC 0x000078A14780 (0x000078A00000+0x00014780) [ 0] ArmVeNorFlashDxe.dll PC 0x000078A10634 (0x000078A00000+0x00010634) [ 0] ArmVeNorFlashDxe.dll PC 0x000078A11CF0 (0x000078A00000+0x00011CF0) [ 0] ArmVeNorFlashDxe.dll PC 0x000078A11DD0 (0x000078A00000+0x00011DD0) [ 0] ArmVeNorFlashDxe.dll PC 0x00007BC9D87C (0x00007BC98000+0x0000587C) [ 1] PartitionDxe.dll PC 0x00007BC99B3C (0x00007BC98000+0x00001B3C) [ 1] PartitionDxe.dll PC 0x00007F362F50 (0x00007F359000+0x00009F50) [ 2] DxeCore.dll PC 0x00007BD63BB0 (0x00007BD5B000+0x00008BB0) [ 3] BdsDxe.dll PC 0x00007BD6EE00 (0x00007BD5B000+0x00013E00) [ 3] BdsDxe.dll PC 0x00007BD67C70 (0x00007BD5B000+0x0000CC70) [ 3] BdsDxe.dll PC 0x00007F3724F0 (0x00007F359000+0x000194F0) [ 4] DxeCore.dll PC 0x00004008FC30 PC 0x000040090130 PC 0x5800F6025800F5E1 Recursive exception occurred while dumping the CPU state which is rather unhelpful, given that this prevent the remaining debug output from being printed (register dump, stack dump, fault related system registers etc) Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2017-11-23ArmVirtPkg/PrePi: remove ArmPlatformStackLib dependencyArd Biesheuvel1-12/+2
ArmPlatformStackLib has hooks into primary/secondary core PCDs and other ArmPlatformLib related junk, so let's simply set the stack pointer directly. This is trivial given that our PrePi is unicore only. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com>
2017-11-23ArmVirtPkg/PrePi: move DRAM discovery code into PrePiArd Biesheuvel1-2/+75
ArmVirtQemuKernel and ArmVirtXen use essentially the same code to retrieve DRAM information from the DT /memory node at early boot, and invoke it via the ArmPlatformPeiBootAction () hook exposed by ArmPlatformLib. Let's move this code into the PrePi implementation these platforms share between them (and not with any other platforms) so we can eliminate another dependency on the messy ArmPlatformLib. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com>
2017-11-23ArmVirtPkg/PrePi: remove bogus primary core checkArd Biesheuvel1-7/+0
QEMU and KVM based ARM/AARCH64 virtual machines only enter UEFI on a single core, so ArmPlatformIsPrimaryCore() always returns true. And even if it didn't, our code does absolutely nothing meaningful based on its return value, so don't bother calling it, and remove another frivolous dependency on ArmPlatformLib. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2016-10-24ArmVirtPkg/PrePi: remove mSystemMemoryEndArd Biesheuvel1-6/+0
Recording the top of SEC visible system memory in a global variable is not necessary, and violates the constraints of the SEC/PEI environment, given that it may execute from NOR flash. So remove it. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com>
2016-08-11ArmVirtPkg: clean up assembly source filesArd Biesheuvel1-29/+12
This updates all assembly source files under ArmVirtPkg to mark exported functions as ASM_FUNC(), which puts them in a separate section, allowing the linker to prune code that is left unused. At the same time, clean up the code to get rid of LoadConstantToReg() instances involving symbol references, each of which emits an absolute literal, and hence and entry in the PE/COFF .reloc table. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2016-08-11ArmVirt/PrePi: make jump to CEntryPoint relativeArd Biesheuvel1-6/+1
The ArmVirtPkg platforms that use PrePi have no notion of boot remapped aliases, so we can simply jump to CEntryPoint() directly rather than via an absolute reference. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2016-08-10ArmVirtPkg/PrePi: use correct callee saved regsArd Biesheuvel1-15/+15
Both the ARM and the AARCH64 versions of the PrePi code (shared between ArmVirtQemuKernel and ArmVirtXen) 'preserve' values across a function call using registers that are not in fact callee saved. So fix that. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com>
2015-11-27ArmVirtPkg/PrePi: remove global variable allocation from lowlevel initArd Biesheuvel1-7/+0
Now that we dropped all ArmPlatformGlobalVariableLib dependencies, there is no longer a need to allocate and clear out the global variable region in the PrePi init code. So remove it. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18991 6f19259b-4bc3-4df7-8a09-765794883524
2015-07-07ArmVirtPkg: use correct ASM decoration for non-function global symbolsArd Biesheuvel1-3/+3
This fixes the declaration and definition of mSystemMemoryEnd so that it is correctly annotated as a non-function symbol. Also adds the ASM_PFX prefix, which is empty on AARCH64 but should be included for correctness. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17861 6f19259b-4bc3-4df7-8a09-765794883524
2015-07-06ArmVirtPkg: adapt ArmVirtXen build to system memory end global variableArd Biesheuvel1-0/+4
This fixes the ArmVirtXen build that was broken by r17835, which adds a global variable mSystemMemoryEnd which is shared between a module and a library it depends on. Add the same global variable to the relocatable PrePi used by ArmVirtXen. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17837 6f19259b-4bc3-4df7-8a09-765794883524
2015-05-29Renamed ArmPlatformPkg/ArmVirtualizationPkg into ArmVirtPkgOlivier Martin2-0/+213
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17537 6f19259b-4bc3-4df7-8a09-765794883524
generated by cgit v1.1 at 2024-07-19 17:10:29 +0000