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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) Return (Local0)
} }
/* GetBus(Node, Link) */
Method (GBUS, 2, NotSerialized) Method (GBUS, 2, NotSerialized)
{ {
Store (0x00, Local0) Store (0x00, Local0)
@ -107,6 +108,7 @@ Scope (\_SB)
Return (0x00) Return (0x00)
} }
/* GetBusResources(Node, Link) */
Method (GWBN, 2, NotSerialized) Method (GWBN, 2, NotSerialized)
{ {
Name (BUF0, ResourceTemplate () Name (BUF0, ResourceTemplate ()
@ -146,6 +148,7 @@ Scope (\_SB)
Return (RTAG (BUF0)) Return (RTAG (BUF0))
} }
/* GetMemoryResources(Node, Link) */
Method (GMEM, 2, NotSerialized) Method (GMEM, 2, NotSerialized)
{ {
Name (BUF0, ResourceTemplate () Name (BUF0, ResourceTemplate ()
@ -166,22 +169,25 @@ Scope (\_SB)
Store (0x00, Local3) Store (0x00, Local3)
While (LLess (Local0, 0x10)) While (LLess (Local0, 0x10))
{ {
/* Get value of the first register */
Store (DerefOf (Index (\_SB.PCI0.MMIO, Local0)), Local1) Store (DerefOf (Index (\_SB.PCI0.MMIO, Local0)), Local1)
Increment (Local0) Increment (Local0)
Store (DerefOf (Index (\_SB.PCI0.MMIO, Local0)), Local2) 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)))) 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 (Local1, 0xFFFFFF00), 0x08), MMIN)
Store (ShiftLeft (And (Local2, 0xFFFFFF00), 0x08), MMAX) Store (ShiftLeft (And (Local2, 0xFFFFFF00), 0x08), MMAX)
Or (MMAX, 0xFFFF, MMAX) Or (MMAX, 0xFFFF, MMAX)
Subtract (MMAX, MMIN, MLEN) Subtract (MMAX, MMIN, MLEN)
Increment (MLEN) Increment (MLEN)
If (Local4) If (Local4) /* I've already done this once */
{ {
Concatenate (RTAG (BUF0), Local3, Local5) Concatenate (RTAG (BUF0), Local3, Local5)
Store (Local5, Local3) Store (Local5, Local3)
@ -199,14 +205,15 @@ Scope (\_SB)
Increment (Local0) Increment (Local0)
} }
If (LNot (Local4)) If (LNot (Local4)) /* No resources for this node and link. */
{ {
Store (BUF0, Local3) Store (RTAG (BUF0), Local3)
} }
Return (Local3) Return (Local3)
} }
/* GetIOResources(Node, Link) */
Method (GIOR, 2, NotSerialized) Method (GIOR, 2, NotSerialized)
{ {
Name (BUF0, ResourceTemplate () Name (BUF0, ResourceTemplate ()
@ -230,19 +237,21 @@ Scope (\_SB)
Store (DerefOf (Index (\_SB.PCI0.PCIO, Local0)), Local1) Store (DerefOf (Index (\_SB.PCI0.PCIO, Local0)), Local1)
Increment (Local0) Increment (Local0)
Store (DerefOf (Index (\_SB.PCI0.PCIO, Local0)), Local2) 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)))) 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 (Local1, 0x01FFF000), PMIN)
Store (And (Local2, 0x01FFF000), PMAX) Store (And (Local2, 0x01FFF000), PMAX)
Or (PMAX, 0x0FFF, PMAX) Or (PMAX, 0x0FFF, PMAX)
Subtract (PMAX, PMIN, PLEN) Subtract (PMAX, PMIN, PLEN)
Increment (PLEN) Increment (PLEN)
If (Local4) If (Local4) /* I've already done this once */
{ {
Concatenate (RTAG (BUF0), Local3, Local5) Concatenate (RTAG (BUF0), Local3, Local5)
Store (Local5, Local3) Store (Local5, Local3)
@ -288,7 +297,7 @@ Scope (\_SB)
Increment (Local0) Increment (Local0)
} }
If (LNot (Local4)) If (LNot (Local4)) /* No resources for this node and link. */
{ {
Store (RTAG (BUF0), Local3) Store (RTAG (BUF0), Local3)
} }