stage2: add TD Partitioning support #419
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Will update this PR again after #432 is merged since that impacts our stage1 trampoline logic |
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PR updated. TDP boots stage2 with stage2 moved to 8MB. |
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joergroedel
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Aug 27, 2024
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msft-jlange
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Since both the stage2 bootloader and the SVSM kernel dump the CPUID page, there needs to be a page present at the respective GPA on TDP platforms. Insert a normal zero page at the CPUID page location so that dump_cpuid_table() can work as expected. Signed-off-by: Peter Fang <[email protected]>
Since the SVSM kernel touches the secrets page in svsm_start(), there needs to be a page present at the respective GPA on TDP platforms. Insert a normal zero page at the secrets page location so that the SVSM kernel can touch it without issues. Signed-off-by: Peter Fang <[email protected]>
Clean up formatting and crate ordering. Signed-off-by: Peter Fang <[email protected]>
Add the tdx-tdcall crate in preparation for the upcoming TDX enabling changes. Signed-off-by: Peter Fang <[email protected]>
Stage2LaunchInfo has been increased to 48 bytes. Make the according changes in stage1 trampoline. Signed-off-by: Peter Fang <[email protected]>
Setting the initial location counter has no effect since all of the addresses before edata are derived based on the subsequent locations. Signed-off-by: Peter Fang <[email protected]>
Add GHCI-based PIO driver to TdpPlatform. This implementation translates all of the in/out operations to TDVMCALL operations as required by the GHCI spec. Additionally, move console initialization to env_setup() to enable it as early as possible. Signed-off-by: Peter Fang <[email protected]>
Make stage2 a tad more verbose by signaling when it's about ready to jump into the SVSM kernel. Signed-off-by: Peter Fang <[email protected]>
phys_addr_sizes should be the entirety of CPUID leaf 0x80000008.EAX, not just the Physical Address Bits field. Signed-off-by: Peter Fang <[email protected]>
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Updated this PR after #463 got merged |
msft-jlange
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Oct 18, 2024
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This is in preparation for the upcoming changes to PageTable::virt_to_phys(). Since 1G huge pages are architecturally permissible when translating a virtual address, PAGE_SIZE_1G is now a valid page size even though it's currently not actively used anywhere. Signed-off-by: Peter Fang <[email protected]>
PageFrame is an enum describing not only a physical address, but also the page frame to which it belongs. - PageFrame::address(): return its internal PhysAddr - PageFrame::start(): return the beginning of the page frame - PageFrame::end(): return the end of the page frame Signed-off-by: Peter Fang <[email protected]>
virt_to_frame() not only returns the translated physical address, but also returns the size of the underlying page through PageFrame. Signed-off-by: Peter Fang <[email protected]>
On TDP platforms, page validation means page acceptance. Implement
validate_{physical, virtual}_page_range() using the tdx-tdcall crate for
this TDCALL operation. Page invalidation simply means zeroing out the
page on TDP platforms.
Signed-off-by: Peter Fang <[email protected]>
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Updated the PR based on feedback |
msft-jlange
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Oct 22, 2024
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This is the second half of the TDX enabling work in stage2. It enables SVSM running on a TDP platform to boot until the last jump in stage2_main(). It also adds support for serial console.