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sb/intel/lynxpoint/acpi/serialio.asl: Add more _PS0/_PS3 methods

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Implementation taken from Wildcat Point (Broadwell) code. This reduces
differences between both platforms.

Change-Id: Id3b6efcbc416929245fcaf329521d49fee0b457f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91464
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Angel Pons 2026-02-27 21:51:57 +01:00 • committed by Matt DeVillier
commit 6953c591ba
1 changed files with 96 additions and 34 deletions
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130
src/southbridge/intel/lynxpoint/acpi/serialio.asl
View file

@ -16,6 +16,28 @@ External (\S5EN)
External (\S6EN)
External (\S7EN)
// Put SerialIO device in D0 state
// Arg0 - Ref to offset 0x84 of device's PCI config space
Method (LPD0, 1, Serialized)
{
Arg0 = DeRefOf (Arg0) & 0xFFFFFFFC
Local0 = DeRefOf (Arg0) // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
}
// Put SerialIO device in D3 state
// Arg0 - Ref to offset 0x84 of device's PCI config space
Method (LPD3, 1, Serialized)
{
Arg0 = DeRefOf (Arg0) | 0x3
Local0 = DeRefOf (Arg0) // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
}
// Serial IO Resource Consumption for BAR1
Device (SIOR)
{
@ -193,32 +215,20 @@ Device (I2C0)
}
}
// Access to PCI Config in ACPI mode
OperationRegion (KEYS, SystemMemory, \S1B1, 0x100)
Field (KEYS, DWordAcc, NoLock, Preserve)
OperationRegion (SPRT, SystemMemory, \S1B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
Offset (0x84),
PSAT, 32,
SPCS, 32
}
// Put controller in D0 state
Method (_PS0, 0, Serialized)
{
^PSAT &= 0xfffffffc
Local0 = ^PSAT // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
^^LPD0 (RefOf (SPCS))
}
// Put controller in D3Hot state
Method (_PS3, 0, Serialized)
{
^PSAT |= 0x00000003
Local0 = ^PSAT // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
^^LPD3 (RefOf (SPCS))
}
}
@ -273,32 +283,20 @@ Device (I2C1)
}
}
// Access to PCI Config in ACPI mode
OperationRegion (KEYS, SystemMemory, \S2B1, 0x100)
Field (KEYS, DWordAcc, NoLock, Preserve)
OperationRegion (SPRT, SystemMemory, \S2B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
Offset (0x84),
PSAT, 32,
SPCS, 32
}
// Put controller in D0 state
Method (_PS0, 0, Serialized)
{
^PSAT &= 0xfffffffc
Local0 = ^PSAT // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
^^LPD0 (RefOf (SPCS))
}
// Put controller in D3Hot state
Method (_PS3, 0, Serialized)
{
^PSAT |= 0x00000003
Local0 = ^PSAT // Read back after writing
// Use Local0 to avoid iasl warning: Method Local is set but never used
Local0 &= Ones
^^LPD3 (RefOf (SPCS))
}
}
@ -337,6 +335,22 @@ Device (SPI0)
Return (0xF)
}
}
OperationRegion (SPRT, SystemMemory, \S3B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
SPCS, 32
}
Method (_PS0, 0, Serialized)
{
^^LPD0 (RefOf (SPCS))
}
Method (_PS3, 0, Serialized)
{
^^LPD3 (RefOf (SPCS))
}
}
Device (SPI1)
@ -386,6 +400,22 @@ Device (SPI1)
Return (0xF)
}
}
OperationRegion (SPRT, SystemMemory, \S4B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
SPCS, 32
}
Method (_PS0, 0, Serialized)
{
^^LPD0 (RefOf (SPCS))
}
Method (_PS3, 0, Serialized)
{
^^LPD3 (RefOf (SPCS))
}
}
Device (UAR0)
@ -435,6 +465,22 @@ Device (UAR0)
Return (0xF)
}
}
OperationRegion (SPRT, SystemMemory, \S5B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
SPCS, 32
}
Method (_PS0, 0, Serialized)
{
^^LPD0 (RefOf (SPCS))
}
Method (_PS3, 0, Serialized)
{
^^LPD3 (RefOf (SPCS))
}
}
Device (UAR1)
@ -472,6 +518,22 @@ Device (UAR1)
Return (0xF)
}
}
OperationRegion (SPRT, SystemMemory, \S6B1 + 0x84, 4)
Field (SPRT, DWordAcc, NoLock, Preserve)
{
SPCS, 32
}
Method (_PS0, 0, Serialized)
{
^^LPD0 (RefOf (SPCS))
}
Method (_PS3, 0, Serialized)
{
^^LPD3 (RefOf (SPCS))
}
}
Device (SDIO)