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| author | Myles Watson <mylesgw@gmail.com> | 2010-05-21 20:36:47 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-05-21 20:36:47 +0000 |
| commit | 1c0c6372a9ecbaec6ee9504e47824d6481a0e977 (patch) | |
| tree | c6688b10ece8c0ef28b8e6e6ad48134117c515d5 /src/northbridge | |
| parent | 8d96ed433641c44404387f555458fab46b3832ee (diff) | |
| download | coreboot-1c0c6372a9ecbaec6ee9504e47824d6481a0e977.tar.xz | |
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
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/amd/amdk8/amdk8_util.asl | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/src/northbridge/amd/amdk8/amdk8_util.asl b/src/northbridge/amd/amdk8/amdk8_util.asl index 1062d526b8..57a2cf95c8 100644 --- a/src/northbridge/amd/amdk8/amdk8_util.asl +++ b/src/northbridge/amd/amdk8/amdk8_util.asl @@ -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) } |