stage2: add TD Partitioning support #419
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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 <peter.fang@intel.com>
Clean up formatting and crate ordering. Signed-off-by: Peter Fang <peter.fang@intel.com>
Add the tdx-tdcall crate in preparation for the upcoming TDX enabling changes. Signed-off-by: Peter Fang <peter.fang@intel.com>
Add the TDX implementation of IOPort. This implementation translates all of the in/out operations to TDVMCALL operations as required by the GHCI spec. Signed-off-by: Peter Fang <peter.fang@intel.com>
Rename struct SVSMIOPort for clarity and distinction from the TDX implementation. Signed-off-by: Peter Fang <peter.fang@intel.com>
phys_addr_sizes should be the entirety of CPUID leaf 0x80000008.EAX, not just the Physical Address Bits field. Signed-off-by: Peter Fang <peter.fang@intel.com>
validate_page_range() currently takes GVA due to the design of PVALIDATE. In the case of TDX, GPA is required for page acceptance. Add an additional input, paddr (PhysAddr), to validate_page_range(). An explicit input for GPA is required because virt_to_phys() is not always available. The input region may be out of range for the current KERNEL_MAPPING. Signed-off-by: Peter Fang <peter.fang@intel.com>
On TDP platforms, validate_page_range() means page acceptance. Use the tdx-tdcall crate for this TDCALL operation. Signed-off-by: Peter Fang <peter.fang@intel.com>
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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.