x86_64 firmware support: Use fixed size struct elements to support cross arch firmwares #59
Comments
|
@PatrickRudolph, that is good feedback. We will keep that in mind while developing new FSP's for future Intel platforms. Rewriting the UPD headers for pre-existing FSP binaries going back to the beginning of time isn't a maintainable activity, for the same reason that keeping coreboot local copies of UPD headers makes updates tricky. |
coreboot-bot
pushed a commit
to coreboot/coreboot
that referenced
this issue
Feb 4, 2021
Add new Kconfig symbols to mark FSP binary as x86_32. Fix the FSP headers and replace void pointers by fixed sized integers depending on the used mode to compile the FSP. This issue has been reported here: intel/FSP#59 This is necessary to run on x86_64, as pointers have different size. Add preprocessor error to warn that x86_64 FSP isn't supported by the current code. Tested on Intel Skylake. FSP-M no longer returns the error "Invalid Parameter". Change-Id: I6015005c4ee3fc2f361985cf8cff896bcefd04fb Signed-off-by: Patrick Rudolph <[email protected]> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48174 Tested-by: build bot (Jenkins) <[email protected]> Reviewed-by: Angel Pons <[email protected]>
coreboot-bot
pushed a commit
to coreboot/coreboot
that referenced
this issue
Mar 18, 2022
Fix the FSP headers and replace void pointers by fixed sized integers depending on the used mode to compile the FSP. Change request here:intel/FSP#59 This is necessary to run on x86_64, as pointers have different size. Add preprocessor error to warn that x86_64 FSP isn't supported by the current code. BUG=b:200113959 TEST=Verified on Meteor Lake platform, without any compilation error Signed-off-by: Subrata Banik <[email protected]> Change-Id: I1f33db43f7932cf6d165d0c70a0e2922dad00a09 Reviewed-on: https://review.coreboot.org/c/coreboot/+/62847 Tested-by: build bot (Jenkins) <[email protected]> Reviewed-by: Anil Kumar K <[email protected]> Reviewed-by: Tim Wawrzynczak <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
As FSP binaries are released with a fixed architecture (x86_32), the header must not contain variable size fields like SIZE_T, UINTN, VOID* or UINTPTR_T. If compiled on x86_64 this would cause those structs to not match the ones used internally by FSP as the element size differs.
Please remove such elements and only use variables that have a fixed size, even on when compiled on x86_64.
The text was updated successfully, but these errors were encountered: