According to UPL spec BL should initialize FP init meaning UPL
does not need to initialize it. Besides this is arch specific init
and needs to be moved out of UPL common flow. In order to not break
current BL implementations, for now just moving the init to later
point of time but for both x32 and x64 eventually this should be
removed once BL impelement this logic.
Test: Verified booting UEFI shell on coreboot on qemu.
Cc: Guo Dong <guo.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james...@intel.com>
Cc: Gua Guo <gua....@intel.com>
Signed-off-by: Dhaval Sharma <dha...@rivosinc.com>
Reviewed-by: Gua Guo <gua.guo@...>
Reviewed-by: James Lu <james.lu@...>
---
Notes:
v3:
- Added FP initialization to X64 path as well
v4:
- Updated reviewed-by tag
UefiPayloadPkg/UefiPayloadEntry/Ia32/DxeLoadFunc.c | 3 +++
UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c | 3 ---
UefiPayloadPkg/UefiPayloadEntry/X64/DxeLoadFunc.c | 3 +++
3 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/UefiPayloadPkg/UefiPayloadEntry/Ia32/DxeLoadFunc.c
b/UefiPayloadPkg/UefiPayloadEntry/Ia32/DxeLoadFunc.c
index 61a9f01ec9e7..921a38555e21 100644
--- a/UefiPayloadPkg/UefiPayloadEntry/Ia32/DxeLoadFunc.c
+++ b/UefiPayloadPkg/UefiPayloadEntry/Ia32/DxeLoadFunc.c
@@ -268,6 +268,9 @@ HandOffToDxeCore (
UINT32 Index;
X64_IDT_TABLE *IdtTableForX64;
+ // Initialize floating point operating environment to be compliant with UEFI
spec.
+ InitializeFloatingPointUnits ();
+
//
// Clear page 0 and mark it as allocated if NULL pointer detection is
enabled.
//
diff --git a/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
b/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
index f8939efe70db..8aff00142971 100644
--- a/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
+++ b/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
@@ -473,9 +473,6 @@ _ModuleEntryPoint (
PrintHob (mHobList);
);
- // Initialize floating point operating environment to be compliant with UEFI
spec.
- InitializeFloatingPointUnits ();
-
// Build HOB based on information from Bootloader
Status = BuildHobs (BootloaderParameter, &DxeFv);
ASSERT_EFI_ERROR (Status);
diff --git a/UefiPayloadPkg/UefiPayloadEntry/X64/DxeLoadFunc.c
b/UefiPayloadPkg/UefiPayloadEntry/X64/DxeLoadFunc.c
index 346e3feb0459..84a6112ce64a 100644
--- a/UefiPayloadPkg/UefiPayloadEntry/X64/DxeLoadFunc.c
+++ b/UefiPayloadPkg/UefiPayloadEntry/X64/DxeLoadFunc.c
@@ -40,6 +40,9 @@ HandOffToDxeCore (
VOID *GhcbBase;
UINTN GhcbSize;
+ // Initialize floating point operating environment to be compliant with UEFI
spec.
+ InitializeFloatingPointUnits ();
+
//
// Clear page 0 and mark it as allocated if NULL pointer detection is
enabled.
//
--
2.34.1
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