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  2. [PATCH v3] MinPlatformPkg: Remove _ADR from MinDsdt.asl

Re: [PATCH v3] MinPlatformPkg: Remove _ADR from MinDsdt.asl

Chen, Aryeh
 

Hi Ankit,

Add a change to remove Name(_ADR, 0x00000000) from edk2-platforms\Platform\Intel\MinPlatformPkg\Acpi\MinDsdt\MinDsdt.asl
It can boot to OS success on Win10 21H2 and Ubuntu 22.4.0 on TGLU openboard bios.

=== Acpidump ===
Signature "DSDT"
Length 0x000000FD (253)
Revision 0x01 (1)
Checksum 0x33 (51)
OEM ID "INTEL "
OEM Table ID "MIN "
OEM Revision 0x00000000 (0)
Creator ID "INTL"
Creator Revision 0x20210930 (539035952)
DefinitionBlock ("DSDT.AML", "DSDT", 0x01, "INTEL ", "MIN ", 0x00000000)
{
Scope(_SB)
{
Device(PCI0)
{
Name(_HID, EISAID("PNP0A08"))
Name(_CID, EISAID("PNP0A03"))
Name(_SEG, Zero)
Method(^BN00, 0, NotSerialized)
{
Return(Zero)
}

=== Original mindsdt.asl ===
Scope(\_SB) {
//---------------------------------------------------------------------------
// Begin PCI tree object scope
//---------------------------------------------------------------------------
Device(PCI0) { // PCI Bridge "Host Bridge"
Name(_HID, EISAID("PNP0A08")) // Indicates PCI Express/PCI-X Mode2 host hierarchy
Name(_CID, EISAID("PNP0A03")) // To support legacy OS that doesn't understand the new HID
Name(_SEG, 0)
Name(_ADR, 0x00000000)
Method(^BN00, 0){ return(0x0000) } // Returns default Bus number for Peer PCI busses. Name can be overriden with control method placed directly under Device scope
Method(_BBN, 0){ return(BN00()) } // Bus number, optional for the Root PCI Bus

Thanks,
Aryeh

-----Original Message-----
From: Sinha, Ankit <ankit.sinha@...>
Sent: Tuesday, September 13, 2022 4:54 AM
To: Chen, Aryeh <aryeh.chen@...>; devel@edk2.groups.io
Cc: Chiu, Chasel <chasel.chiu@...>; Desimone, Nathaniel L <nathaniel.l.desimone@...>; Oram, Isaac W <isaac.w.oram@...>; Gao, Liming <gaoliming@...>; Dong, Eric <eric.dong@...>
Subject: RE: [PATCH v3] MinPlatformPkg: Remove _ADR from MinDsdt.asl

Hi Aryeh,

Can you please post the test results for this change. It would be good to note that there is no change in behavior in the OS.

Thank you,
Ankit

-----Original Message-----
From: Chen, Aryeh <aryeh.chen@...>
Sent: Sunday, September 11, 2022 10:18 PM
To: devel@edk2.groups.io
Cc: Chen, Aryeh <aryeh.chen@...>; Chiu, Chasel
<chasel.chiu@...>; Desimone, Nathaniel L
<nathaniel.l.desimone@...>; Oram, Isaac W
<isaac.w.oram@...>; Sinha, Ankit <ankit.sinha@...>; Gao,
Liming <gaoliming@...>; Dong, Eric <eric.dong@...>
Subject: [PATCH v3] MinPlatformPkg: Remove _ADR from MinDsdt.asl

From: Aryeh Chen <aryeh.chen@...>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4057

According to ASL Coding Guidelines - Device Identifiers "A Device
should contain either an _ADR or a _HID object, never both."
, so remove _ADR due to _HID exist.

Signed-off-by: Aryeh Chen <aryeh.chen@...>
Cc: Chasel Chiu <chasel.chiu@...>
Cc: Nate DeSimone <nathaniel.l.desimone@...>
Cc: Isaac Oram <isaac.w.oram@...>
Cc: Ankit Sinha <ankit.sinha@...>
Cc: Liming Gao <gaoliming@...>
Cc: Eric Dong <eric.dong@...>
---
Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.asl | 1 -
1 file changed, 1 deletion(-)

diff --git a/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.asl
b/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.asl
index 0d94472450..4efb8709ac 100644
--- a/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.asl
+++ b/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.asl
@@ -27,7 +27,6 @@ DefinitionBlock (
Name(_HID, EISAID("PNP0A08")) // Indicates PCI Express/PCI-X Mode2
host hierarchy Name(_CID, EISAID("PNP0A03")) // To support legacy OS
that doesn't understand the new HID Name(_SEG, 0)- Name(_ADR,
0x00000000) Method(^BN00, 0){ return(0x0000) } // Returns default Bus
number for Peer PCI busses. Name can be overriden with control method
placed directly under Device scope Method(_BBN, 0){ return(BN00()) } //
Bus number, optional for the Root PCI Bus Name(_UID, 0x0000) // Unique
Bus ID, optional--
2.26.2.windows.1
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