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 <[email protected]> Acked-by: Patrick Georgi <[email protected]> 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) } -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
