[S] Change in coreboot[main]: acpi: Enable 64bit ECAM resource

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79096?usp=email )

Change subject: acpi: Enable 64bit ECAM resource
......................................................................

acpi: Enable 64bit ECAM resource

Adjust ACPI DSDT to support ECAM resource above 4GB by modifying the PCI
ECAM Resource Consumption settings. The changes include specifying a
QWordMemory resource template, accommodating non-cacheable, read-write
attributes, and adjusting the address range.

Change-Id: Idb049d848f2311e27df5279a10c33f9fab259c08
Signed-off-by: Naresh Solanki 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79096
Tested-by: build bot (Jenkins) 
Reviewed-by: Lean Sheng Tan 
Reviewed-by: Maximilian Brune 
Reviewed-by: Felix Held 
Reviewed-by: Nico Huber 
---
M src/acpi/dsdt_top.asl
1 file changed, 20 insertions(+), 4 deletions(-)

Approvals:
  Lean Sheng Tan: Looks good to me, approved
  Maximilian Brune: Looks good to me, but someone else must approve
  Felix Held: Looks good to me, approved
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, but someone else must approve

diff --git a/src/acpi/dsdt_top.asl b/src/acpi/dsdt_top.asl
index 6a0129f..7539f00 100644
--- a/src/acpi/dsdt_top.asl
+++ b/src/acpi/dsdt_top.asl
@@ -57,11 +57,27 @@
    Device (PERC)	// PCI ECAM Resource Consumption
    {
    	Name (_HID, EisaId("PNP0C02"))
-		Name (_CRS, ResourceTemplate()
+		Method (_CRS, 0, Serialized)
    	{
-			Memory32Fixed (ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS,
-			CONFIG_ECAM_MMCONF_LENGTH)
-		})
+			Name (RBUF, ResourceTemplate ()
+			{
+				QWordMemory (ResourceConsumer, PosDecode, MinFixed, MaxFixed,
+				    NonCacheable, ReadWrite,
+				    0x0000000000000000, // Granularity
+				    0x0000000000000000, // _MIN
+				    0x0000000000000001, // _MAX
+				    0x0000000000000000, // Translation
+				    0x0000000000000002, // _Len
+				    ,, _Y00, AddressRangeMemory, TypeStatic)
+			})
+			CreateQWordField (RBUF, _SB.PERC._CRS._Y00._MIN, MIN1)
+			CreateQWordField (RBUF, _SB.PERC._CRS._Y00._MAX, MAX1)
+			CreateQWordField (RBUF, _SB.PERC._CRS._Y00._LEN, LEN1)
+			MIN1 = CONFIG_ECAM_MMCONF_BASE_ADDRESS
+			MAX1 = (MIN1 + CONFIG_ECAM_MMCONF_LENGTH -1)
+			LEN1 = CONFIG_ECAM_MMCONF_LENGTH
+			Return (RBUF)
+		}
    }
 }
 #endif