From 36651dc0f06343169a69e006361c5b933ee37567 Mon Sep 17 00:00:00 2001
From: jkim <jkim@FreeBSD.org>
Date: Tue, 9 Nov 2010 00:14:39 +0000
Subject: Reduce diff between platforms and fix style(9) bugs.

---
 sys/amd64/acpica/OsdEnvironment.c | 50 +++++++++++++++++++++++++++------------
 1 file changed, 35 insertions(+), 15 deletions(-)

(limited to 'sys/amd64/acpica')

diff --git a/sys/amd64/acpica/OsdEnvironment.c b/sys/amd64/acpica/OsdEnvironment.c
index fb01a3f..a35a3e0 100644
--- a/sys/amd64/acpica/OsdEnvironment.c
+++ b/sys/amd64/acpica/OsdEnvironment.c
@@ -28,9 +28,6 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-/*
- * 6.1 : Environmental support
- */
 #include <sys/types.h>
 #include <sys/bus.h>
 #include <sys/linker_set.h>
@@ -39,33 +36,56 @@ __FBSDID("$FreeBSD$");
 #include <contrib/dev/acpica/include/acpi.h>
 #include <contrib/dev/acpica/include/actables.h>
 
-static u_long amd64_acpi_root;
+static u_long acpi_root_phys;
 
-SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &amd64_acpi_root, 0,
-	     "The physical address of the RSDP");
+SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &acpi_root_phys, 0,
+    "The physical address of the RSDP");
 
 ACPI_STATUS
 AcpiOsInitialize(void)
 {
-	return(0);
+
+	return (AE_OK);
 }
 
 ACPI_STATUS
 AcpiOsTerminate(void)
 {
-	return(0);
+
+	return (AE_OK);
+}
+
+static u_long
+acpi_get_root_from_loader(void)
+{
+	long acpi_root;
+
+	if (resource_long_value("acpi", 0, "rsdp", &acpi_root) == 0)
+		return (acpi_root);
+
+	return (0);
+}
+
+static u_long
+acpi_get_root_from_memory(void)
+{
+	ACPI_SIZE acpi_root;
+
+	if (ACPI_SUCCESS(AcpiFindRootPointer(&acpi_root)))
+		return (acpi_root);
+
+	return (0);
 }
 
 ACPI_PHYSICAL_ADDRESS
 AcpiOsGetRootPointer(void)
 {
-	u_long	ptr;
 
-	if (amd64_acpi_root == 0 &&
-	    (resource_long_value("acpi", 0, "rsdp", (long *)&ptr) == 0 ||
-	    AcpiFindRootPointer((ACPI_SIZE *)&ptr) == AE_OK) &&
-	    ptr != 0)
-		amd64_acpi_root = ptr;
+	if (acpi_root_phys == 0) {
+		acpi_root_phys = acpi_get_root_from_loader();
+		if (acpi_root_phys == 0)
+			acpi_root_phys = acpi_get_root_from_memory();
+	}
 
-	return (amd64_acpi_root);
+	return (acpi_root_phys);
 }
-- 
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