[coreboot] [commit] r5578 - trunk/src/northbridge/amd/amdk8
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svn at coreboot.org
Fri May 21 22:36:48 CEST 2010
Author: oxygene
Date: Fri May 21 22:36:47 2010
New Revision: 5578
URL: https://tracker.coreboot.org/trac/coreboot/changeset/5578
Log:
Fix amdk8_util.asl and explain behaviour a bit.
Signed-off-by: Myles Watson <mylesgw at gmail.com>
Acked-by: Patrick Georgi <patrick.georgi at coresystems.de>
Modified:
trunk/src/northbridge/amd/amdk8/amdk8_util.asl
Modified: trunk/src/northbridge/amd/amdk8/amdk8_util.asl
==============================================================================
--- trunk/src/northbridge/amd/amdk8/amdk8_util.asl Fri May 21 19:15:55 2010 (r5577)
+++ trunk/src/northbridge/amd/amdk8/amdk8_util.asl Fri May 21 22:36:47 2010 (r5578)
@@ -84,6 +84,7 @@
Return (Local0)
}
+ /* GetBus(Node, Link) */
Method (GBUS, 2, NotSerialized)
{
Store (0x00, Local0)
@@ -107,6 +108,7 @@
Return (0x00)
}
+ /* GetBusResources(Node, Link) */
Method (GWBN, 2, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
@@ -146,6 +148,7 @@
Return (RTAG (BUF0))
}
+ /* GetMemoryResources(Node, Link) */
Method (GMEM, 2, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
@@ -166,22 +169,25 @@
Store (0x00, Local3)
While (LLess (Local0, 0x10))
{
+ /* Get value of the first register */
Store (DerefOf (Index (\_SB.PCI0.MMIO, Local0)), Local1)
Increment (Local0)
Store (DerefOf (Index (\_SB.PCI0.MMIO, Local0)), Local2)
- If (LEqual (And (Local1, 0x03), 0x03))
+ If (LEqual (And (Local1, 0x03), 0x03)) /* Pair enabled? */
{
- If (LEqual (Arg0, And (Local2, 0x07)))
+ If (LEqual (Arg0, And (Local2, 0x07))) /* Node matches? */
{
+ /* If Link Matches (or we got passed 0xFF) */
If (LOr (LEqual (Arg1, 0xFF), LEqual (Arg1, ShiftRight (And (Local2, 0x30), 0x04))))
{
+ /* Extract the Base and Limit values */
Store (ShiftLeft (And (Local1, 0xFFFFFF00), 0x08), MMIN)
Store (ShiftLeft (And (Local2, 0xFFFFFF00), 0x08), MMAX)
Or (MMAX, 0xFFFF, MMAX)
Subtract (MMAX, MMIN, MLEN)
Increment (MLEN)
- If (Local4)
+ If (Local4) /* I've already done this once */
{
Concatenate (RTAG (BUF0), Local3, Local5)
Store (Local5, Local3)
@@ -199,14 +205,15 @@
Increment (Local0)
}
- If (LNot (Local4))
+ If (LNot (Local4)) /* No resources for this node and link. */
{
- Store (BUF0, Local3)
+ Store (RTAG (BUF0), Local3)
}
Return (Local3)
}
+ /* GetIOResources(Node, Link) */
Method (GIOR, 2, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
@@ -230,19 +237,21 @@
Store (DerefOf (Index (\_SB.PCI0.PCIO, Local0)), Local1)
Increment (Local0)
Store (DerefOf (Index (\_SB.PCI0.PCIO, Local0)), Local2)
- If (LEqual (And (Local1, 0x03), 0x03))
+ If (LEqual (And (Local1, 0x03), 0x03)) /* Pair enabled? */
{
- If (LEqual (Arg0, And (Local2, 0x07)))
+ If (LEqual (Arg0, And (Local2, 0x07))) /* Node matches? */
{
+ /* If Link Matches (or we got passed 0xFF) */
If (LOr (LEqual (Arg1, 0xFF), LEqual (Arg1, ShiftRight (And (Local2, 0x30), 0x04))))
{
+ /* Extract the Base and Limit values */
Store (And (Local1, 0x01FFF000), PMIN)
Store (And (Local2, 0x01FFF000), PMAX)
Or (PMAX, 0x0FFF, PMAX)
Subtract (PMAX, PMIN, PLEN)
Increment (PLEN)
- If (Local4)
+ If (Local4) /* I've already done this once */
{
Concatenate (RTAG (BUF0), Local3, Local5)
Store (Local5, Local3)
@@ -288,7 +297,7 @@
Increment (Local0)
}
- If (LNot (Local4))
+ If (LNot (Local4)) /* No resources for this node and link. */
{
Store (RTAG (BUF0), Local3)
}
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