From: "Chao Li" <lichao@loongson.cn>
To: devel@edk2.groups.io
Cc: Michael D Kinney <michael.d.kinney@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Zhiguang Liu <zhiguang.liu@intel.com>
Subject: [edk2-devel] [PATCH v1 02/29] MdePkg: Add LoongArch64 FPU function set into BaseCpuLib
Date: Thu, 2 Nov 2023 21:42:22 +0800 [thread overview]
Message-ID: <20231102134249.3983594-3-lichao@loongson.cn> (raw)
In-Reply-To: <20231102134249.3983594-1-lichao@loongson.cn>
Adding InitializeFloatingPointUnits, EnableFloatingPointUnits and
DisableFloatingPointUnits functions for LoongArch64.
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
---
MdePkg/Include/Library/CpuLib.h | 37 +++++++++++---
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, 121 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..42da55ca69 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) 2023, Loongson Technology Corporation Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -41,14 +42,14 @@ CpuFlushTlb (
VOID
);
-#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
-
/**
+ 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
@@ -56,6 +57,30 @@ InitializeFloatingPointUnits (
VOID
);
+/**
+ 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
+ );
+
+#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
+
/**
Determine if the standard CPU signature is "AuthenticAMD".
@retval TRUE The CPU signature matches.
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..6cb253a416
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S
@@ -0,0 +1,17 @@
+#------------------------------------------------------------------------------
+#
+# DisableFloatingPointUnits() for LoongArch64
+#
+# Copyright (c) 2023, 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..27d8243a59
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S
@@ -0,0 +1,17 @@
+#------------------------------------------------------------------------------
+#
+# EnableFloatingPointUnits() for LoongArch64
+#
+# Copyright (c) 2023, 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..1b9d01c2c1
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S
@@ -0,0 +1,51 @@
+#------------------------------------------------------------------------------
+#
+# InitializeFloatingPointUnits() for LoongArch64
+#
+# Copyright (c) 2023, 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
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next parent reply other threads:[~2023-11-02 13:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20231102134249.3983594-1-lichao@loongson.cn>
2023-11-02 13:42 ` Chao Li [this message]
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 03/29] MdePkg: Add LoongArch64 exception function set into BaseLib Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 05/29] MdePkg: Add LoongArch Cpucfg function Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 06/29] MdePkg: Add read stable counter operation for LoongArch Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 08/29] MdePkg: Add IOCSR " Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 09/29] UefiCpuPkg: Add LoongArch64 CPU Timer library Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 11/29] UefiCpuPkg: Add CpuMmuLib.h to UefiCpuPkg Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 15/29] EmbeddedPkg: Add PcdPrePiCpuIoSize width for LOONGARCH64 Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 16/29] ArmVirtPkg: Move PCD of FDT base address and FDT padding to OvmfPkg Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 17/29] OvmfPkg/LoongArchVirt: Add PciCpuIo2Dxe module Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 18/29] OvmfPkg/LoongArchVirt: Add stable timer driver Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 19/29] OvmfPkg/LoongArchVirt: Add a NULL library named CollectApResouceLibNull Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 21/29] OvmfPkg/LoongArchVirt: Add real time clock library Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 23/29] OvmfPkg/LoongArchVirt: Add PeiServiceTablePointerLib Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 24/29] OvmfPkg/LoongArchVirt: Add platform boot manager library Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 25/29] OvmfPkg/LoongArchVirt: Add FdtQemuFwCfgLib Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 26/29] OvmfPkg/LoongArchVirt: Add reset system library Chao Li
2023-11-02 13:42 ` [edk2-devel] [PATCH v1 27/29] OvmfPkg/LoongArchVirt: Support SEC phase Chao Li
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