From 3a1fe9dec1d4758fd9c5c52f93c4efb5956f3c33 Mon Sep 17 00:00:00 2001
From: Rudolf Marek <r.marek@assembler.cz>
Date: Wed, 12 Oct 2011 22:11:40 +0200
Subject: [PATCH] Make Asus A8V-E SE better ACPI citizen.

Use the SSDT autogen infrastructure to support the automatic reserved resources,
automatic P-state generation and automatic _CRS PCI0 method.

Change-Id: Ic56a92eeb70a0a2a2d6de2507009ec3a832c83b3
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/251
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
---
 src/mainboard/asus/a8v-e_se/acpi_tables.c | 19 +++++++++
 src/mainboard/asus/a8v-e_se/dsdt.asl      | 52 ++++++++++++++++++++---
 2 files changed, 64 insertions(+), 7 deletions(-)

diff --git a/src/mainboard/asus/a8v-e_se/acpi_tables.c b/src/mainboard/asus/a8v-e_se/acpi_tables.c
index fe8d4757ee..e08b3053d7 100644
--- a/src/mainboard/asus/a8v-e_se/acpi_tables.c
+++ b/src/mainboard/asus/a8v-e_se/acpi_tables.c
@@ -31,6 +31,8 @@
 #include <device/pci_ids.h>
 #include "southbridge/via/vt8237r/vt8237r.h"
 #include "southbridge/via/k8t890/k8t890.h"
+#include "northbridge/amd/amdk8/acpi.h"
+#include <cpu/amd/model_fxx_powernow.h>
 
 extern const unsigned char AmlCode[];
 
@@ -81,6 +83,14 @@ unsigned long acpi_fill_madt(unsigned long current)
 	return current;
 }
 
+unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id)
+{
+	k8acpi_write_vars();
+	amd_model_fxx_generate_powernow(0, 0, 0);
+	acpigen_write_mainboard_resources("\\_SB.PCI0.MBRS", "_CRS");
+	return (unsigned long) (acpigen_get_current());
+}
+
 unsigned long write_acpi_tables(unsigned long start)
 {
 	unsigned long current;
@@ -91,6 +101,7 @@ unsigned long write_acpi_tables(unsigned long start)
 	acpi_mcfg_t *mcfg;
 	acpi_fadt_t *fadt;
 	acpi_facs_t *facs;
+	acpi_header_t *ssdt;
 	acpi_header_t *dsdt;
 
 	/* Align ACPI tables to 16 byte. */
@@ -151,6 +162,14 @@ unsigned long write_acpi_tables(unsigned long start)
 	current += srat->header.length;
 	acpi_add_table(rsdp, srat);
 
+	/* SSDT */
+	printk(BIOS_DEBUG, "ACPI:    * SSDT\n");
+	ssdt = (acpi_header_t *)current;
+
+	acpi_create_ssdt_generator(ssdt, "DYNADATA");
+	current += ssdt->length;
+	acpi_add_table(rsdp, ssdt);
+
 	printk(BIOS_INFO, "ACPI: done.\n");
 	return current;
 }
diff --git a/src/mainboard/asus/a8v-e_se/dsdt.asl b/src/mainboard/asus/a8v-e_se/dsdt.asl
index 6a46102b5a..16ad92c077 100644
--- a/src/mainboard/asus/a8v-e_se/dsdt.asl
+++ b/src/mainboard/asus/a8v-e_se/dsdt.asl
@@ -24,12 +24,7 @@
 
 DefinitionBlock ("DSDT.aml", "DSDT", 1, "CORE  ", "COREBOOT", 1)
 {
-	/* Define the main processor.*/
-	Scope (\_PR)
-	{
-		Processor (\_PR.CPU0, 0x00, 0x000000, 0x00) {}
-		Processor (\_PR.CPU1, 0x01, 0x000000, 0x00) {}
-	}
+	 #include "northbridge/amd/amdk8/util.asl"
 
 	/* For now only define 2 power states:
 	 *  - S0 which is fully on
@@ -50,8 +45,44 @@ DefinitionBlock ("DSDT.aml", "DSDT", 1, "CORE  ", "COREBOOT", 1)
 			Name (_UID, 0x00)
 			Name (_BBN, 0x00)
 
+		    External (BUSN)
+		    External (MMIO)
+		    External (PCIO)
+		    External (SBLK)
+		    External (TOM1)
+		    External (HCLK)
+		    External (SBDN)
+		    External (HCDN)
+
+		    Method (_CRS, 0, NotSerialized)
+			{
+			    Name (BUF0, ResourceTemplate ()
+			    {
+				IO (Decode16,
+				0x0CF8,             // Address Range Minimum
+				0x0CF8,             // Address Range Maximum
+				0x01,               // Address Alignment
+				0x08,               // Address Length
+				)
+				WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
+				0x0000,             // Address Space Granularity
+				0x0000,             // Address Range Minimum
+				0x0CF7,             // Address Range Maximum
+				0x0000,             // Address Translation Offset
+				0x0CF8,             // Address Length
+				,, , TypeStatic)
+			    })
+				/* Methods bellow use SSDT to get actual MMIO regs
+				   The IO ports are from 0xd00, optionally an VGA,
+				   otherwise the info from MMIO is used.
+				 */
+				Concatenate (\_SB.GMEM (0x00, \_SB.PCI0.SBLK), BUF0, Local1)
+				Concatenate (\_SB.GIOR (0x00, \_SB.PCI0.SBLK), Local1, Local2)
+				Concatenate (\_SB.GWBN (0x00, \_SB.PCI0.SBLK), Local2, Local3)
+				Return (Local3)
+			}
+
 			/* PCI Routing Table */
-			/* aaa */
 			Name (_PRT, Package () {
 				Package (0x04) { 0x000BFFFF, 0x00, 0x00, 0x10 }, /* Slot 0xB */
 				Package (0x04) { 0x000BFFFF, 0x01, 0x00, 0x11 },
@@ -206,6 +237,13 @@ DefinitionBlock ("DSDT.aml", "DSDT", 1, "CORE  ", "COREBOOT", 1)
 					}
 				}
 			}
+			/* Dummy device to hold auto generated reserved resources */
+			Device(MBRS) {
+				Name (_HID, EisaId ("PNP0C02"))
+				Name (_UID, 0x01)
+				External(_CRS) /* Resource Template in SSDT */
+			}
+
 		}
 	}
 }