Adding InitializeFloatingPointUnits, EnableFloatingPointUnits and DisableFloatingPointUnits functions for LoongArch64.
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang....@intel.com> Signed-off-by: Chao Li <lic...@loongson.cn> Acked-by: Michael D Kinney <michael.d.kin...@intel.com> --- MdePkg/Include/Library/CpuLib.h | 41 ++++++++++++--- MdePkg/Library/BaseCpuLib/BaseCpuLib.inf | 7 ++- .../Library/BaseCpuLib/LoongArch/DisableFpu.S | 17 +++++++ .../Library/BaseCpuLib/LoongArch/EnableFpu.S | 17 +++++++ .../BaseCpuLib/LoongArch/InitializeFpu.S | 51 +++++++++++++++++++ 5 files changed, 125 insertions(+), 8 deletions(-) create mode 100644 MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S create mode 100644 MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S create mode 100644 MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S diff --git a/MdePkg/Include/Library/CpuLib.h b/MdePkg/Include/Library/CpuLib.h index 3f29937dc7..82611b5948 100644 --- a/MdePkg/Include/Library/CpuLib.h +++ b/MdePkg/Include/Library/CpuLib.h @@ -8,6 +8,7 @@ As a result, these services could not be defined in the Base Library. Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -41,20 +42,24 @@ CpuFlushTlb ( VOID ); -#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) - +#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) || defined (MDE_CPU_LOONGARCH64) /** + Initialize the CPU floating point units. + Initializes floating point units for requirement of UEFI specification. - This function initializes floating-point control word to 0x027F (all exceptions - masked,double-precision, round-to-nearest) and multimedia-extensions control word - (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero - for masked underflow). + For IA32 and X64, this function initializes floating-point control word to 0x027F + (all exceptions masked,double-precision, round-to-nearest) and multimedia-extensions + control word (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, + flush to zero for masked underflow). **/ VOID EFIAPI InitializeFloatingPointUnits ( VOID ); +#endif + +#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) /** Determine if the standard CPU signature is "AuthenticAMD". @@ -89,4 +94,28 @@ GetCpuSteppingId ( #endif +#if defined (MDE_CPU_LOONGARCH64) +/** + Enable the CPU floating point units. + + Enable the CPU floating point units. +**/ +VOID +EFIAPI +EnableFloatingPointUnits ( + VOID + ); + +/** + Disable the CPU floating point units. + + Disable the CPU floating point units. +**/ +VOID +EFIAPI +DisableFloatingPointUnits ( + VOID + ); +#endif + #endif diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf index 9a162afe6d..89f6272f11 100644 --- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf +++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf @@ -65,8 +65,11 @@ RiscV/Cpu.S [Sources.LOONGARCH64] - LoongArch/CpuFlushTlb.S | GCC - LoongArch/CpuSleep.S | GCC + LoongArch/CpuFlushTlb.S | GCC + LoongArch/CpuSleep.S | GCC + LoongArch/InitializeFpu.S | GCC + LoongArch/EnableFpu.S | GCC + LoongArch/DisableFpu.S | GCC [Packages] MdePkg/MdePkg.dec diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S new file mode 100644 index 0000000000..33c6bf3411 --- /dev/null +++ b/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S @@ -0,0 +1,17 @@ +#------------------------------------------------------------------------------ +# +# DisableFloatingPointUnits() for LoongArch64 +# +# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR> +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ +ASM_GLOBAL ASM_PFX(DisableFloatingPointUnits) + +ASM_PFX(DisableFloatingPointUnits): + li.w $t0, 0x1 + csrxchg $zero, $t0, 0x2 + + jirl $zero, $ra, 0 + .end diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S new file mode 100644 index 0000000000..3e4f7411f1 --- /dev/null +++ b/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S @@ -0,0 +1,17 @@ +#------------------------------------------------------------------------------ +# +# EnableFloatingPointUnits() for LoongArch64 +# +# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR> +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ +ASM_GLOBAL ASM_PFX(EnableFloatingPointUnits) + +ASM_PFX(EnableFloatingPointUnits): + li.w $t0, 0x1 + csrxchg $t0, $t0, 0x2 + + jirl $zero, $ra, 0 + .end diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S new file mode 100644 index 0000000000..2cea5558a6 --- /dev/null +++ b/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S @@ -0,0 +1,51 @@ +#------------------------------------------------------------------------------ +# +# InitializeFloatingPointUnits() for LoongArch64 +# +# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR> +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ +ASM_GLOBAL ASM_PFX(InitializeFloatingPointUnits) + +ASM_PFX(InitializeFloatingPointUnits): + li.d $t0, 0x0 // RNE mode + movgr2fcsr $r0, $t0 + li.d $t1, -1 // SNaN + + movgr2fr.d $f0, $t1 + movgr2fr.d $f1, $t1 + movgr2fr.d $f2, $t1 + movgr2fr.d $f3, $t1 + movgr2fr.d $f4, $t1 + movgr2fr.d $f5, $t1 + movgr2fr.d $f6, $t1 + movgr2fr.d $f7, $t1 + movgr2fr.d $f8, $t1 + movgr2fr.d $f9, $t1 + movgr2fr.d $f10, $t1 + movgr2fr.d $f11, $t1 + movgr2fr.d $f12, $t1 + movgr2fr.d $f13, $t1 + movgr2fr.d $f14, $t1 + movgr2fr.d $f15, $t1 + movgr2fr.d $f16, $t1 + movgr2fr.d $f17, $t1 + movgr2fr.d $f18, $t1 + movgr2fr.d $f19, $t1 + movgr2fr.d $f20, $t1 + movgr2fr.d $f21, $t1 + movgr2fr.d $f22, $t1 + movgr2fr.d $f23, $t1 + movgr2fr.d $f24, $t1 + movgr2fr.d $f25, $t1 + movgr2fr.d $f26, $t1 + movgr2fr.d $f27, $t1 + movgr2fr.d $f28, $t1 + movgr2fr.d $f29, $t1 + movgr2fr.d $f30, $t1 + movgr2fr.d $f31, $t1 + + jirl $zero, $ra, 0 + .end -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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