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sb/intel/i82801gx: Remove unnecessary/redundant ACPI offset operator

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Using ACPICA version 20180927 or greater, IASL detects Unnecessary/redundant
uses of the Offset() operator within a Field Unit list.
It then sends a remark "^ Unnecessary/redundant use of Offset".

Offsets refer to the current offset are unnecessary.
example:
    OperationRegion (OPR1, SystemMemory, 0x100, 0x100)
    Field (OPR1)
    {
        Offset (0),     // Never needed
        FLD1, 32,
        Offset (4),     // Redundant, offset is already 4 (bytes)
        FLD2, 8,
        Offset (64),    // OK use of Offset.
        FLD3, 16,
    }

We will have those remarks:
dsdt.asl     14:         Offset (0),
Remark   2158 -                 ^ Unnecessary/redundant use of Offset
operator

dsdt.asl     16:         Offset (4),
Remark   2158 -                 ^ Unnecessary/redundant use of Offset
operator

Change-Id: If53072c6a91dd794c70d1fab8697b1713d400fe8
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/31672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
This commit is contained in:
Elyes HAOUAS
2019-03-01 11:07:06 +01:00
committed by Patrick Georgi
parent 2796b242b2
commit 80505a6fef
2 changed files with 7 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/southbridge/intel/i82801gx/acpi/globalnvs.asl
View File

@@ -30,7 +30,6 @@ OperationRegion (GNVS, SystemMemory, NVSA, 0x100)
Field (GNVS, ByteAcc, NoLock, Preserve)
{
/* Miscellaneous */
Offset (0x00),
OSYS, 16, // 0x00 - Operating System
SMIF, 8, // 0x02 - SMI function
PRM0, 8, // 0x03 - SMI function parameter
@@ -48,7 +47,6 @@ Field (GNVS, ByteAcc, NoLock, Preserve)
LINX, 8, // 0x12 - Linux OS
DCKN, 8, // 0x13 - PCIe docking state
/* Thermal policy */
Offset (0x14),
ACTT, 8, // 0x14 - active trip point
TPSV, 8, // 0x15 - passive trip point
TC1V, 8, // 0x16 - passive trip point TC1
@@ -87,7 +85,6 @@ Field (GNVS, ByteAcc, NoLock, Preserve)
UTIL, 8, // 0x3a -
ACIN, 8, // 0x3b -
/* Integrated Graphics Device */
Offset (0x3c),
IGDS, 8, // 0x3c - IGD state (primary = 1)
TLST, 8, // 0x3d - Display Toggle List pointer
CADL, 8, // 0x3e - Currently Attached Devices List
@@ -95,7 +92,6 @@ Field (GNVS, ByteAcc, NoLock, Preserve)
CSTE, 16, // 0x40 - Current display state
NSTE, 16, // 0x42 - Next display state
SSTE, 16, // 0x44 - Set display state
Offset (0x46),
NDID, 8, // 0x46 - Number of Device IDs
DID1, 32, // 0x47 - Device ID 1
DID2, 32, // 0x4b - Device ID 2

14
src/southbridge/intel/i82801gx/acpi/ich7.asl
View File

@@ -43,12 +43,12 @@ Scope(\)
OperationRegion(GPIO, SystemIO, DEFAULT_GPIOBASE, 0x3c)
Field(GPIO, ByteAcc, NoLock, Preserve)
{
Offset(0x00), // GPIO Use Select
// GPIO Use Select
GU00, 8,
GU01, 8,
GU02, 8,
GU03, 8,
Offset(0x04), // GPIO IO Select
// GPIO IO Select
GIO0, 8,
GIO1, 8,
GIO2, 8,
@@ -96,17 +96,17 @@ Scope(\)
GIV1, 8,
GIV2, 8,
GIV3, 8,
Offset(0x30), // GPIO Use Select 2
// GPIO Use Select 2
GU04, 8,
GU05, 8,
GU06, 8,
GU07, 8,
Offset(0x34), // GPIO IO Select 2
// GPIO IO Select 2
GIO4, 8,
GIO5, 8,
GIO6, 8,
GIO7, 8,
Offset(0x38), // GPIO Level 2
// GPIO Level 2
GP32, 1,
GP33, 1,
GP34, 1,
@@ -125,7 +125,7 @@ Scope(\)
OperationRegion(RCRB, SystemMemory, DEFAULT_RCBA, 0x4000)
Field(RCRB, DWordAcc, Lock, Preserve)
{
Offset(0x0000), // Backbone
// Backbone
Offset(0x1000), // Chipset
Offset(0x3000), // Legacy Configuration Registers
Offset(0x3404), // High Performance Timer Configuration
@@ -148,7 +148,7 @@ Scope(\)
, 2, // Reserved
LPBD, 1, // LPC bridge disable
EHCD, 1, // EHCI disable
Offset(0x341a), // FD Root Ports
// FD Root Ports
RP1D, 1, // Root Port 1 disable
RP2D, 1, // Root Port 2 disable
RP3D, 1, // Root Port 3 disable