diff options
Diffstat (limited to 'UefiCpuPkg/Library/BaseRiscVFpuLib/RiscVFpuCore.S')
| -rw-r--r-- | UefiCpuPkg/Library/BaseRiscVFpuLib/RiscVFpuCore.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/BaseRiscVFpuLib/RiscVFpuCore.S b/UefiCpuPkg/Library/BaseRiscVFpuLib/RiscVFpuCore.S new file mode 100644 index 0000000000..b439af4e42 --- /dev/null +++ b/UefiCpuPkg/Library/BaseRiscVFpuLib/RiscVFpuCore.S @@ -0,0 +1,22 @@ +/** @file
+*
+* Copyright (c) 2024, Canonical Services Ltd
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Library/BaseRiscVFpuLib.h>
+#include <Register/RiscV64/RiscVImpl.h>
+
+//
+// Initialize floating point unit
+//
+ASM_FUNC (RiscVInitializeFpu)
+ csrr a0, CSR_SSTATUS
+ li a1, MSTATUS_FS
+ or a0, a0, a1
+ csrw CSR_SSTATUS, a0
+ csrw CSR_FCSR, x0
+ li a0, 0
+ ret
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