From: "Pranav Madhu" <pranav.madhu@arm.com>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
Sami Mujawar <sami.mujawar@arm.com>
Subject: [edk2-platforms][PATCH V1 9/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-N2-Cfg1 platform
Date: Thu, 10 Mar 2022 18:05:59 +0530 [thread overview]
Message-ID: <20220310123559.18945-10-pranav.madhu@arm.com> (raw)
In-Reply-To: <20220310123559.18945-1-pranav.madhu@arm.com>
Update the Rd-N2-Cfg1 platform specific ACPI tables to ACPI version
v6.4.
Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>
---
Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Madt.aslc | 112 ++++++++++----------
Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Pptt.aslc | 80 +++++++-------
2 files changed, 97 insertions(+), 95 deletions(-)
diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Madt.aslc b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Madt.aslc
index c6bb29a25c61..65926027eadf 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Madt.aslc
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Madt.aslc
@@ -1,23 +1,22 @@
/** @file
-* Multiple APIC Description Table (MADT) for RD-N2-Cfg1 platform
-*
-* This file lists all the processors available on the platform that the OSPM
-* can enumerate and boot. It also lists all the interrupt controllers available
-* in the system.
-*
-* Copyright (c) 2021, Arm Ltd. All rights reserved.
-*
-* SPDX-License-Identifier: BSD-2-Clause-Patent
-*
-* @par Specification Reference:
-* - ACPI 6.3, Chapter 5, Section 5.2.12, Multiple APIC Description Table
+ Multiple APIC Description Table (MADT) for RD-N2-Cfg1 platform
+
+ The MADT table provides OSPM with information necessary for operation on
+ systems with Generic interrupt controller (GIC). The information about the GIC
+ CPU interface, redistributor, distributor and ITS blocks on the Rd-N2-Cfg1
+ platform is included in this table.
+
+ Copyright (c) 2021 - 2022, Arm Limited. All rights reserved.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Specification Reference:
+ - ACPI 6.4, Chapter 5, Section 5.2.12, Multiple APIC Description Table
**/
#include <Library/AcpiLib.h>
#include <Library/ArmLib.h>
#include <Library/PcdLib.h>
-#include <IndustryStandard/Acpi.h>
-
#include "SgiAcpiHeader.h"
#include "SgiPlatform.h"
@@ -28,69 +27,70 @@
#pragma pack (1)
typedef struct {
- EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER Header;
- EFI_ACPI_6_2_GIC_STRUCTURE GicInterfaces[CORE_CNT];
- EFI_ACPI_6_2_GIC_DISTRIBUTOR_STRUCTURE GicDistributor;
- EFI_ACPI_6_2_GICR_STRUCTURE GicRedistributor;
- EFI_ACPI_6_2_GIC_ITS_STRUCTURE GicIts[3];
-} EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE;
+ EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER Header;
+ EFI_ACPI_6_4_GIC_STRUCTURE GicInterfaces[CORE_CNT];
+ EFI_ACPI_6_4_GIC_DISTRIBUTOR_STRUCTURE GicDistributor;
+ EFI_ACPI_6_4_GICR_STRUCTURE GicRedistributor;
+ EFI_ACPI_6_4_GIC_ITS_STRUCTURE GicIts[3];
+} EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE;
#pragma pack ()
-STATIC EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
+STATIC EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
{
ARM_ACPI_HEADER (
- EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
- EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE,
- EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION
+ EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
+ EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE,
+ EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION
),
// MADT specific fields
0, // LocalApicAddress
0 // Flags
},
{
- // Format: EFI_ACPI_6_2_GICC_STRUCTURE_INIT(GicId, AcpiCpuUid, Mpidr, Flags,
+ // Format: EFI_ACPI_6_4_GICC_STRUCTURE_INIT(GicId, AcpiCpuUid, Mpidr, Flags,
// PmuIrq, GicBase, GicVBase,
// GicHBase, GsivId, GicRBase,
- // Efficiency)
+ // Efficiency,
+ // SpeOverflowInterrupt)
// Note: The GIC Structure of the primary CPU must be the first entry
- // (see note in 5.2.12.14 GICC Structure of ACPI v6.2).
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core0
- 0, 0, GET_MPID(0x0, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core1
- 0, 1, GET_MPID(0x100, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core2
- 0, 2, GET_MPID(0x200, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core3
- 0, 3, GET_MPID(0x300, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core4
- 0, 4, GET_MPID(0x400, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core5
- 0, 5, GET_MPID(0x500, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core6
- 0, 6, GET_MPID(0x600, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
- EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Neoverse N2 core7
- 0, 7, GET_MPID(0x700, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
- 0, 0, 0, 25, 0, 0),
+ // (see chapter 5.2.12.14 GICC Structure of ACPI v6.4).
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core0
+ 0, 0, GET_MPID(0x0, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core1
+ 0, 1, GET_MPID(0x100, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core2
+ 0, 2, GET_MPID(0x200, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core3
+ 0, 3, GET_MPID(0x300, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core4
+ 0, 4, GET_MPID(0x400, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core5
+ 0, 5, GET_MPID(0x500, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core6
+ 0, 6, GET_MPID(0x600, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
+ EFI_ACPI_6_4_GICC_STRUCTURE_INIT( // Neoverse N2 core7
+ 0, 7, GET_MPID(0x700, 0x0), EFI_ACPI_6_4_GIC_ENABLED, 23,
+ 0, 0, 0, 25, 0, 0, 0),
},
// GIC Distributor Entry
- EFI_ACPI_6_2_GIC_DISTRIBUTOR_INIT(0, FixedPcdGet32 (PcdGicDistributorBase),
+ EFI_ACPI_6_4_GIC_DISTRIBUTOR_INIT(0, FixedPcdGet32 (PcdGicDistributorBase),
0, 3),
// GIC Redistributor
- EFI_ACPI_6_2_GIC_REDISTRIBUTOR_INIT(FixedPcdGet32 (PcdGicRedistributorsBase),
+ EFI_ACPI_6_4_GIC_REDISTRIBUTOR_INIT(FixedPcdGet32 (PcdGicRedistributorsBase),
SIZE_16MB),
// GIC ITS
{
- EFI_ACPI_6_2_GIC_ITS_INIT(0, 0x30040000),
- EFI_ACPI_6_2_GIC_ITS_INIT(1, 0x30080000),
- EFI_ACPI_6_2_GIC_ITS_INIT(2, 0x300C0000),
+ EFI_ACPI_6_4_GIC_ITS_INIT(0, 0x30040000),
+ EFI_ACPI_6_4_GIC_ITS_INIT(1, 0x30080000),
+ EFI_ACPI_6_4_GIC_ITS_INIT(2, 0x300C0000),
},
};
diff --git a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Pptt.aslc b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Pptt.aslc
index 5890544c0b92..52be70f5b170 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Pptt.aslc
+++ b/Platform/ARM/SgiPkg/AcpiTables/RdN2Cfg1/Pptt.aslc
@@ -1,24 +1,22 @@
/** @file
-* Processor Properties Topology Table (PPTT) for RD-N2-Cfg1 platform
-*
-* This file describes the topological structure of the processor block on the
-* RD-N2-Cfg1 platform in the form as defined by ACPI PPTT table. The RD-N2-Cfg1
-* platform includes eight single-thread CPUS. Each of the CPUs include 64KB
-* L1 Data cache, 64KB L1 Instruction cache and 1MB L2 cache. The platform also
-* includes system level cache of 8MB.
-*
-* Copyright (c) 2021, ARM Limited. All rights reserved.
-* SPDX-License-Identifier: BSD-2-Clause-Patent
-*
-* @par Specification Reference:
-* - ACPI 6.3, Chapter 5, Section 5.2.29, Processor Properties Topology Table
+ Processor Properties Topology Table (PPTT) for RD-N2-Cfg1 platform
+
+ This file describes the topological structure of the processor block on the
+ RD-N2-Cfg1 platform in the form as defined by ACPI PPTT table. The RD-N2-Cfg1
+ platform includes eight single-thread CPUS. Each of the CPUs include 64KB
+ L1 Data cache, 64KB L1 Instruction cache and 1MB L2 cache. The platform also
+ includes system level cache of 8MB.
+
+ Copyright (c) 2021 - 2022, Arm Limited. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Specification Reference:
+ - ACPI 6.4, Chapter 5, Section 5.2.29, Processor Properties Topology Table
**/
-#include <IndustryStandard/Acpi.h>
#include <Library/AcpiLib.h>
#include <Library/ArmLib.h>
#include <Library/PcdLib.h>
-
#include "SgiAcpiHeader.h"
#include "SgiPlatform.h"
@@ -31,10 +29,10 @@
#define PPTT_CORE_INIT(PackageId, ClusterId, CpuId) \
{ \
/* Parameters for CPU Core */ \
- EFI_ACPI_6_3_PPTT_STRUCTURE_PROCESSOR_INIT ( \
+ EFI_ACPI_6_4_PPTT_STRUCTURE_PROCESSOR_INIT ( \
OFFSET_OF (RD_PPTT_CORE, DCache), /* Length */ \
PPTT_PROCESSOR_CORE_FLAGS, /* Flag */ \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package.Cluster[ClusterId]), /* Parent */ \
((PackageId << 4) | ClusterId), /* ACPI Id */ \
2 /* Num of private resource */ \
@@ -42,47 +40,50 @@
\
/* Offsets of the private resources */ \
{ \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package.Cluster[ClusterId].Core[CpuId].DCache), \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package.Cluster[ClusterId].Core[CpuId].ICache) \
}, \
\
/* L1 data cache parameters */ \
- EFI_ACPI_6_3_PPTT_STRUCTURE_CACHE_INIT ( \
+ EFI_ACPI_6_4_PPTT_STRUCTURE_CACHE_INIT ( \
PPTT_CACHE_STRUCTURE_FLAGS, /* Flag */ \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package.Cluster[ClusterId].Core[CpuId].L2Cache), \
/* Next level of cache */ \
SIZE_64KB, /* Size */ \
256, /* Num of sets */ \
4, /* Associativity */ \
PPTT_DATA_CACHE_ATTR, /* Attributes */ \
- 64 /* Line size */ \
+ 64, /* Line size */ \
+ (((PackageId << 4) | ClusterId) + 1) /* Cache id */ \
), \
\
/* L1 instruction cache parameters */ \
- EFI_ACPI_6_3_PPTT_STRUCTURE_CACHE_INIT ( \
+ EFI_ACPI_6_4_PPTT_STRUCTURE_CACHE_INIT ( \
PPTT_CACHE_STRUCTURE_FLAGS, /* Flag */ \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package.Cluster[ClusterId].Core[CpuId].L2Cache), \
/* Next level of cache */ \
SIZE_64KB, /* Size */ \
256, /* Num of sets */ \
4, /* Associativity */ \
PPTT_INST_CACHE_ATTR, /* Attributes */ \
- 64 /* Line size */ \
+ 64, /* Line size */ \
+ (((PackageId << 4) | ClusterId) + 1) /* Cache id */ \
), \
\
/* L2 cache parameters */ \
- EFI_ACPI_6_3_PPTT_STRUCTURE_CACHE_INIT ( \
+ EFI_ACPI_6_4_PPTT_STRUCTURE_CACHE_INIT ( \
PPTT_CACHE_STRUCTURE_FLAGS, /* Flag */ \
0, /* Next level of cache */ \
SIZE_1MB, /* Size */ \
2048, /* Num of sets */ \
8, /* Associativity */ \
PPTT_UNIFIED_CACHE_ATTR, /* Attributes */ \
- 64 /* Line size */ \
+ 64, /* Line size */ \
+ (((PackageId << 4) | ClusterId) + 1) /* Cache id */ \
), \
}
@@ -94,10 +95,10 @@
#define PPTT_CLUSTER_INIT(PackageId, ClusterId) \
{ \
/* Parameters for Cluster */ \
- EFI_ACPI_6_3_PPTT_STRUCTURE_PROCESSOR_INIT ( \
+ EFI_ACPI_6_4_PPTT_STRUCTURE_PROCESSOR_INIT ( \
OFFSET_OF (RD_PPTT_MINIMAL_CLUSTER, Core), /* Length */ \
PPTT_PROCESSOR_CLUSTER_FLAGS, /* Flag */ \
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE, \
Package), /* Parent */ \
((PackageId << 4) | ClusterId), /* ACPI Id */ \
0 /* Num of private resource */ \
@@ -114,36 +115,37 @@
* Processor Properties Topology Table
*/
typedef struct {
- EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_HEADER Header;
+ EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_HEADER Header;
RD_PPTT_SLC_PACKAGE Package;
-} EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE;
+} EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE;
#pragma pack ()
-STATIC EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE Pptt = {
+STATIC EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE Pptt = {
{
ARM_ACPI_HEADER (
- EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_STRUCTURE_SIGNATURE,
- EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE,
- EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_REVISION
+ EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_STRUCTURE_SIGNATURE,
+ EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE,
+ EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE_REVISION
)
},
{
- EFI_ACPI_6_3_PPTT_STRUCTURE_PROCESSOR_INIT (
+ EFI_ACPI_6_4_PPTT_STRUCTURE_PROCESSOR_INIT (
OFFSET_OF (RD_PPTT_SLC_PACKAGE, Slc),
PPTT_PROCESSOR_PACKAGE_FLAGS, 0, 0, 1),
- OFFSET_OF (EFI_ACPI_6_3_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE,
+ OFFSET_OF (EFI_ACPI_6_4_PROCESSOR_PROPERTIES_TOPOLOGY_TABLE,
Package.Slc),
- EFI_ACPI_6_3_PPTT_STRUCTURE_CACHE_INIT (
+ EFI_ACPI_6_4_PPTT_STRUCTURE_CACHE_INIT (
PPTT_CACHE_STRUCTURE_FLAGS, /* Flag */
0, /* Next level of cache */
SIZE_8MB, /* Size */
8192, /* Num of sets */
16, /* Associativity */
PPTT_UNIFIED_CACHE_ATTR, /* Attributes */
- 64 /* Line size */
+ 64, /* Line size */
+ 1 /* Cache id */
),
{
--
2.17.1
prev parent reply other threads:[~2022-03-10 12:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 12:35 [edk2-platforms][PATCH V1 0/9] Upadate the ACPI tables for RD platforms Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 1/9] Platform/Sgi: Update ACPI version to v6.4 Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 2/9] Platform/Sgi: Update ACPI version to v6.4 for SGI-575 platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 3/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-N1-Edge platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 4/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-N1-Edge-X2 platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 5/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-E1-Edge platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 6/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-V1 platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 7/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-V1-MC platform Pranav Madhu
2022-03-10 12:35 ` [edk2-platforms][PATCH V1 8/9] Platform/Sgi: Update ACPI version to v6.4 for Rd-N2 platform Pranav Madhu
2022-03-10 12:35 ` Pranav Madhu [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220310123559.18945-10-pranav.madhu@arm.com \
--to=devel@edk2.groups.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox