From: "Rebecca Cran" <rebecca@nuviainc.com>
To: devel@edk2.groups.io
Cc: Rebecca Cran <rebecca@nuviainc.com>,
Michael D Kinney <michael.d.kinney@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Zhiguang Liu <zhiguang.liu@intel.com>,
Leif Lindholm <leif@nuviainc.com>,
Ard Biesheuvel <ard.biesheuvel@arm.com>,
Sami Mujawar <Sami.Mujawar@arm.com>
Subject: [PATCH v4 05/11] ArmPkg: Add helper function to read the Memory Model Feature Register 4
Date: Mon, 30 Nov 2020 17:33:52 -0700 [thread overview]
Message-ID: <20201201003358.8780-6-rebecca@nuviainc.com> (raw)
In-Reply-To: <20201201003358.8780-1-rebecca@nuviainc.com>
In AARCH32, CCIDX support is indicated in the MMFR4 register - unlike
under AARCH64 where it's in MMFR2. Add a helper function to read it.
Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
ArmPkg/Library/ArmLib/Arm/ArmV7Lib.h | 6 ++++++
ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S | 4 ++++
ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm | 4 ++++
3 files changed, 14 insertions(+)
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.h b/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.h
index 93183e67230e..3b331a3b2088 100644
--- a/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.h
+++ b/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.h
@@ -48,5 +48,11 @@ ArmCleanInvalidateDataCacheEntryBySetWay (
IN UINTN SetWayFormat
);
+UINT32
+EFIAPI
+ArmReadIdMmfr4 (
+ VOID
+ );
+
#endif // __ARM_V7_LIB_H__
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
index 01c91b10fcb7..a60a2f634132 100644
--- a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
+++ b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
@@ -60,6 +60,10 @@ ASM_FUNC(ArmDisableInterrupts)
isb
bx LR
+ASM_FUNC(ArmReadIdMmfr4)
+ mrc p15,0,r0,c0,c2,6 @ Read ID_MMFR4 Register
+ bx lr
+
// UINT32
// ReadCCSIDR (
// IN UINT32 CSSELR
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
index 26ffa331b929..1679b09b797a 100644
--- a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
+++ b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
@@ -64,6 +64,10 @@
isb
bx LR
+ RVCT_ASM_EXPORT ArmReadIdMmfr4
+ mrc p15,0,r0,c0,c2,6 ; Read ID_MMFR4 Register
+ bx LR
+
// UINT32
// ReadCCSIDR (
// IN UINT32 CSSELR
--
2.26.2
next prev parent reply other threads:[~2020-12-01 0:34 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 0:33 [PATCH v4 00/11] ArmPkg,MdePkg: Add Universal/Smbios and Drivers/FirmwareVersionInfoPeim Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 01/11] ArmPkg: Add ARM SMC Architecture functions to ArmStdSmc.h Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 02/11] MdePkg: Update IndustryStandard/SmBios.h with processor status data Rebecca Cran
2020-12-01 0:39 ` 回复: " gaoliming
2020-12-01 0:33 ` [PATCH v4 03/11] ArmPkg: Add register encoding definition for MMFR2 Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 04/11] ArmPkg: Add helper to read the Memory Model Features Register 2 Rebecca Cran
2020-12-01 0:33 ` Rebecca Cran [this message]
2020-12-16 11:06 ` [PATCH v4 05/11] ArmPkg: Add helper function to read the Memory Model Feature Register 4 Sami Mujawar
2020-12-01 0:33 ` [PATCH v4 06/11] ArmPkg: Add helper to read CCIDX status Rebecca Cran
2020-12-16 11:06 ` Sami Mujawar
2020-12-01 0:33 ` [PATCH v4 07/11] ArmPkg: Fix the return type of the ReadCCSIDR function Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 08/11] ArmPkg: Update ArmLibPrivate.h with cache register definitions Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 09/11] ArmPkg: Add FirmwareVersionInfoPeim Rebecca Cran
2020-12-02 15:20 ` Ard Biesheuvel
2020-12-02 15:31 ` Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 10/11] ArmPkg: Add Universal/Smbios, a generic SMBIOS library for ARM Rebecca Cran
2020-12-01 0:33 ` [PATCH v4 11/11] ArmPkg: Add definition of the maximum cache level in ARMv8-A Rebecca Cran
2020-12-01 21:26 ` [PATCH v4 00/11] ArmPkg,MdePkg: Add Universal/Smbios and Drivers/FirmwareVersionInfoPeim Rebecca Cran
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