ResetVector assembly implementation puts "ALIGN 16" in the end
to guarantee the final executable file size is multiple of 16 bytes.
Because the module uses a special GUID which guarantees it's put in
the very end of a FV, which should be also the end of the FD.
All of these (file size is multiple of 16B, and the module is put at
end of FV, FV is put at end of FD) guarantee the "JMP xxx" instruction
is at FFFF_FFF0h.
This patch updates INF file and ReadMe.txt to add guidance of FDF ffs
rule for the ResetVector.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3473
X64 Reset Vector Code can access the memory range till 4GB using the
Linear-Address Translation to a 2-MByte Page, when user wants to use
more than 4G using 2M Page it will leads to use more number of Page
table entries. using the 1-GByte Page table user can use more than
4G Memory by reducing the page table entries using 1-GByte Page,
this patch attached can access memory range till 512GByte via Linear-
Address Translation to a 1-GByte Page.
Build Tool: if the nasm is not found it will throw Build errors like
FileNotFoundError: [WinError 2]The system cannot find the file specified
run the command wil try except block to get meaningful error message
Test Result: Tested in both Simulation environment and Hardware
both works fine without any issues.
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Harry Han <harry.han@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Cc: Sangeetha V <sangeetha.v@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Cc: Sahil Dureja <sahil.dureja@intel.com>
Signed-off-by: Ashraf Ali S <ashraf.ali.s@intel.com>
* Rename README to ReadMe.txt
* Document that nasm 2.03 or newer is required for building VTF0
Signed-off-by: ydong10
Reviewed-by: jljusten
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12384 6f19259b-4bc3-4df7-8a09-765794883524
Ray Ni
Ashraf Ali S
ydong10