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Fix amdk8_util.asl and explain behaviour a bit. 

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5578 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Myles Watson 2010-05-21 20:36:47 +00:00 committed by Patrick Georgi
parent 8d96ed4336
commit 1c0c6372a9
1 changed files with 18 additions and 9 deletions
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27
src/northbridge/amd/amdk8/amdk8_util.asl
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@ -84,6 +84,7 @@ Scope (\_SB)
Return (Local0)
}
/* GetBus(Node, Link) */
Method (GBUS, 2, NotSerialized)
{
Store (0x00, Local0)
@ -107,6 +108,7 @@ Scope (\_SB)
Return (0x00)
}
/* GetBusResources(Node, Link) */
Method (GWBN, 2, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
@ -146,6 +148,7 @@ Scope (\_SB)
Return (RTAG (BUF0))
}
/* GetMemoryResources(Node, Link) */
Method (GMEM, 2, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
@ -166,22 +169,25 @@ Scope (\_SB)
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 @@ Scope (\_SB)
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 @@ Scope (\_SB)
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 @@ Scope (\_SB)
Increment (Local0)
}
If (LNot (Local4))
If (LNot (Local4)) /* No resources for this node and link. */
{
Store (RTAG (BUF0), Local3)
}