From: "Rebecca Cran" <rebecca@nuviainc.com>
To: devel@edk2.groups.io
Cc: Rebecca Cran <rebecca@nuviainc.com>,
Leif Lindholm <leif@nuviainc.com>,
Ard Biesheuvel <ard.biesheuvel@arm.com>,
"nd @ arm . com . Sami Mujawar" <Sami.Mujawar@arm.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Michael D Kinney <michael.d.kinney@intel.com>,
Zhiguang Liu <zhiguang.liu@intel.com>
Subject: [PATCH v5 10/23] ArmPkg: Add helper to read the CCSIDR2 register
Date: Mon, 4 Jan 2021 15:58:17 -0700 [thread overview]
Message-ID: <20210104225830.12606-11-rebecca@nuviainc.com> (raw)
In-Reply-To: <20210104225830.12606-1-rebecca@nuviainc.com>
Add helper function to read the CCSIDR2 register.
This is used when CCIDX is supported in AARCH32 mode.
Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
ArmPkg/Library/ArmLib/ArmLibPrivate.h | 11 +++++++++++
ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S | 10 ++++++++++
ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm | 10 ++++++++++
3 files changed, 31 insertions(+)
diff --git a/ArmPkg/Library/ArmLib/ArmLibPrivate.h b/ArmPkg/Library/ArmLib/ArmLibPrivate.h
index 5d0224080f3f..e0ec065f1f4a 100644
--- a/ArmPkg/Library/ArmLib/ArmLibPrivate.h
+++ b/ArmPkg/Library/ArmLib/ArmLibPrivate.h
@@ -170,6 +170,17 @@ ReadCCSIDR (
IN UINT32 CSSELR
);
+/** Reads the CCSIDR2 for the specified cache.
+
+ @param CSSELR The CSSELR cache selection register value
+
+ @return The contents of the CCSIDR2 register for the specified cache.
+**/
+UINT32
+ReadCCSIDR2 (
+ IN UINT32 CSSELR
+ );
+
UINT32
ReadCLIDR (
VOID
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
index af61dbee5261..8f75f5051083 100644
--- a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
+++ b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
@@ -74,6 +74,16 @@ ASM_FUNC(ReadCCSIDR)
mrc p15,1,r0,c0,c0,0 @ Read current CP15 Cache Size ID Register (CCSIDR)
bx lr
+// UINT32
+// ReadCCSIDR2 (
+// IN UINT32 CSSELR
+// )
+ASM_FUNC(ReadCCSIDR2)
+ mcr p15,2,r0,c0,c0,0 @ Write Cache Size Selection Register (CSSELR)
+ isb
+ mrc p15,1,r0,c0,c2,0 @ Read current CP15 Cache Size ID Register (CCSIDR2)
+ bx lr
+
// UINT32
// ReadCLIDR (
// IN UINT32 CSSELR
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
index 81f3cb79994c..2fa7a046c0c6 100644
--- a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
+++ b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.asm
@@ -78,6 +78,16 @@
mrc p15,1,r0,c0,c0,0 ; Read current CP15 Cache Size ID Register (CCSIDR)
bx lr
+// UINT32
+// ReadCCSIDR2 (
+// IN UINT32 CSSELR
+// )
+ RVCT_ASM_EXPORT ReadCCSIDR2
+ mcr p15,2,r0,c0,c0,0 ; Write Cache Size Selection Register (CSSELR)
+ isb
+ mrc p15,1,r0,c0,c2,0 ; Read current CP15 Cache Size ID Register (CCSIDR2)
+ bx lr
+
// UINT32
// ReadCLIDR (
// IN UINT32 CSSELR
--
2.26.2
next prev parent reply other threads:[~2021-01-04 22:58 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-04 22:58 [PATCH v5 00/23] ArmPkg,MdePkg: Add Universal/Smbios, and related changes Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 01/23] ArmPkg: Add ARM SMC Architecture functions to ArmStdSmc.h Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 02/23] MdePkg: Update IndustryStandard/SmBios.h with processor status data Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 03/23] ArmPkg: Add register encoding definition for MMFR2 Rebecca Cran
2021-01-05 19:34 ` [edk2-devel] " Sami Mujawar
2021-01-10 1:26 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 04/23] ArmPkg: Add helper to read the Memory Model Features Register 2 Rebecca Cran
2021-01-06 8:55 ` [edk2-devel] " Sami Mujawar
2021-01-10 1:23 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 05/23] ArmPkg: Add helper function to read the Memory Model Feature Register 4 Rebecca Cran
2021-01-10 1:26 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 06/23] ArmPkg: Fix the return type of the ReadCCSIDR function Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 07/23] ArmPkg: Update ArmLibPrivate.h with cache register definitions Rebecca Cran
2021-01-06 9:14 ` [edk2-devel] " Sami Mujawar
2021-01-04 22:58 ` [PATCH v5 08/23] ArmPkg: Add definition of the maximum cache level in ARMv8-A Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 09/23] ArmPkg: Add helper to read CCIDX status Rebecca Cran
2021-01-10 1:28 ` Leif Lindholm
2021-01-04 22:58 ` Rebecca Cran [this message]
2021-01-06 9:55 ` [edk2-devel] [PATCH v5 10/23] ArmPkg: Add helper to read the CCSIDR2 register Sami Mujawar
2021-01-10 1:31 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 11/23] ArmPkg: Add Universal/Smbios/ProcessorSubClassDxe Rebecca Cran
2021-01-05 22:06 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 12/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type00 Rebecca Cran
2021-01-05 21:42 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 13/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type01 Rebecca Cran
2021-01-05 22:00 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-05 22:02 ` Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 14/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type02 Rebecca Cran
2021-01-05 21:59 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 15/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type03 Rebecca Cran
2021-01-05 21:47 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-11 23:34 ` Rebecca Cran
2021-01-12 2:58 ` Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 16/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type13 Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 17/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe/Type32 Rebecca Cran
2021-01-05 21:12 ` [edk2-devel] " Samer El-Haj-Mahmoud
2021-01-04 22:58 ` [PATCH v5 18/23] ArmPkg: Add Universal/Smbios/SmbiosMiscDxe Rebecca Cran
2021-01-10 2:03 ` Leif Lindholm
2021-01-11 0:21 ` Rebecca Cran
2021-01-11 1:29 ` Leif Lindholm
2021-01-11 5:22 ` 回复: [edk2-devel] " gaoliming
2021-01-12 23:22 ` Rebecca Cran
2021-01-04 22:58 ` [PATCH v5 19/23] ArmPkg: Add Library/OemMiscLib.h Rebecca Cran
2021-01-10 2:08 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 20/23] ArmPkg: Add Universal/Smbios/OemMiscLibNull Rebecca Cran
2021-01-10 2:11 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 21/23] ArmPkg: Add OemMiscLibNull instance to ArmPkg.dsc Rebecca Cran
2021-01-10 2:12 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 22/23] ArmPkg: Add SMBIOS PCDs to ArmPkg.dec Rebecca Cran
2021-01-10 2:13 ` Leif Lindholm
2021-01-04 22:58 ` [PATCH v5 23/23] ArmPkg: Add Universal/Smbios drivers to ArmPkg.dsc Rebecca Cran
2021-01-10 2:15 ` Leif Lindholm
2021-01-05 22:14 ` [edk2-devel] [PATCH v5 00/23] ArmPkg,MdePkg: Add Universal/Smbios, and related changes Samer El-Haj-Mahmoud
2021-01-08 15:55 ` Rebecca Cran
2021-01-08 16:40 ` Leif Lindholm
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