Reviewed-by: Zhiguang Liu <zhiguang....@intel.com> -----Original Message----- From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Abner Chang Sent: Friday, April 10, 2020 3:21 PM To: devel@edk2.groups.io Cc: abner.ch...@hpe.com; Gilbert Chen <gilbert.c...@hpe.com>; Leif Lindholm <leif.lindh...@linaro.org>; Kinney, Michael D <michael.d.kin...@intel.com>; Gao, Liming <liming....@intel.com> Subject: [edk2-devel] [PATCH v1 8/9] MdePkg/BaseSynchronizationLib: RISC-V cache related code.
Support RISC-V cache related functions. Signed-off-by: Abner Chang <abner.ch...@hpe.com> Co-authored-by: Gilbert Chen <gilbert.c...@hpe.com> Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <liming....@intel.com> Cc: Leif Lindholm <leif.lindh...@linaro.org> Cc: Gilbert Chen <gilbert.c...@hpe.com> --- .../BaseSynchronizationLib.inf | 5 ++ .../RiscV64/SynchronizationAsm.S | 78 +++++++++++++++++++ 2 files changed, 83 insertions(+) create mode 100644 MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index 446bc19b63..9309d2e1d5 100755 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -3,6 +3,7 @@ # # Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR> # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>+# Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR> # # SPDX-License-Identifier: BSD-2-Clause-Patent #@@ -78,6 +79,10 @@ AArch64/Synchronization.S | GCC AArch64/Synchronization.asm | MSFT +[Sources.RISCV64]+ Synchronization.c+ RiscV64/SynchronizationAsm.S+ [Packages] MdePkg/MdePkg.dec diff --git a/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S b/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S new file mode 100644 index 0000000000..bac80d6871 --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S @@ -0,0 +1,78 @@ +//------------------------------------------------------------------------------+//+// RISC-V synchronization functions.+//+// Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>+//+// SPDX-License-Identifier: BSD-2-Clause-Patent+//+//------------------------------------------------------------------------------+#include <Base.h>++.data++.text+.align 3++.global ASM_PFX(InternalSyncCompareExchange32)+.global ASM_PFX(InternalSyncCompareExchange64)+.global ASM_PFX(InternalSyncIncrement)+.global ASM_PFX(InternalSyncDecrement)++//+// ompare and xchange a 32-bit value.+//+// @param a0 : Pointer to 32-bit value.+// @param a1 : Compare value.+// @param a2 : Exchange value.+//+ASM_PFX (InternalSyncCompareExchange32):+ lr.w a3, (a0) // Load the value from a0 and make+ // the reservation of address.+ bne a3, a1, exit+ sc.w a3, a2, (a0) // Write the value back to the address.+ mv a3, a1+exit:+ mv a0, a3+ ret++.global ASM_PFX(InternalSyncCompareExchange64)++//+// Compare and xchange a 64-bit value.+//+// @param a0 : Pointer to 64-bit value.+// @param a1 : Compare value.+// @param a2 : Exchange value.+//+ASM_PFX (SyncCompareExchange64):+ lr.d a3, (a0) // Load the value from a0 and make+ // the reservation of address.+ bne a3, a1, exit+ sc.d a3, a2, (a0) // Write the value back to the address.+ mv a3, a1+exit2:+ mv a0, a3+ ret++//+// Performs an atomic increment of an 32-bit unsigned integer.+//+// @param a0 : Pointer to 32-bit value.+//+ASM_PFX (InternalSyncIncrement):+ li a1, 1+ amoadd.w a2, a1, (a0)+ mv a0, a2+ ret++//+// Performs an atomic decrement of an 32-bit unsigned integer.+//+// @param a0 : Pointer to 32-bit value.+//+ASM_PFX (InternalSyncDecrement):+ li a1, -1+ amoadd.w a2, a1, (a0)+ mv a0, a2+ ret-- 2.25.0 -=-=-=-=-=-= Groups.io Links: You receive all messages sent to this group. View/Reply Online (#57198): https://edk2.groups.io/g/devel/message/57198 Mute This Topic: https://groups.io/mt/72916365/1779286 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [zhiguang....@intel.com] -=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#57714): https://edk2.groups.io/g/devel/message/57714 Mute This Topic: https://groups.io/mt/72916365/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
