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The OpenSSL library uses floating point registers. The is no guarantee that a prior firmware stage has enabled the FPU. Provide a library BaseRiscVFpuLib to * Enable the FPU and set it to state 'dirty'. * Clear the fcsr CSR. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
23 lines
416 B
ArmAsm
23 lines
416 B
ArmAsm
/** @file
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*
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* Copyright (c) 2024, Canonical Services Ltd
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <Library/BaseRiscVFpuLib.h>
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#include <Register/RiscV64/RiscVImpl.h>
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//
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// Initialize floating point unit
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//
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ASM_FUNC (RiscVInitializeFpu)
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csrr a0, CSR_SSTATUS
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li a1, MSTATUS_FS
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or a0, a0, a1
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csrw CSR_SSTATUS, a0
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csrw CSR_FCSR, x0
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li a0, 0
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ret
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