[PATCH 6/8] powerpc: set up OF properties for ppc32 kdump

[Anton Vorontsov]

From: Dale Farnsworth <dale at farnsworth.org>

Refactor the setting of kexec OF properties, moving the common code
from machine_kexec_64.c to machine_kexec.c where it can be used on
both ppc64 and ppc32.  This will be needed for kdump to work on ppc32
platforms.

Signed-off-by: Dale Farnsworth <dale at farnsworth.org>
Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
---
 arch/powerpc/kernel/machine_kexec.c    |   38 ++++++++++++++++++++++++++++
 arch/powerpc/kernel/machine_kexec_64.c |   43 --------------------------------
 2 files changed, 38 insertions(+), 43 deletions(-)

diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index ac42cfb..bfef717 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -117,6 +117,7 @@ int overlaps_crashkernel(unsigned long start, unsigned long size)
 
 /* Values we need to export to the second kernel via the device tree. */
 static unsigned long kernel_end;
+static unsigned long crashk_size;
 
 static struct property kernel_end_prop = {
 	.name = "linux,kernel-end",
@@ -124,6 +125,41 @@ static struct property kernel_end_prop = {
 	.value = &kernel_end,
 };
 
+static struct property crashk_base_prop = {
+	.name = "linux,crashkernel-base",
+	.length = sizeof(unsigned long),
+	.value = &crashk_res.start,
+};
+
+static struct property crashk_size_prop = {
+	.name = "linux,crashkernel-size",
+	.length = sizeof(unsigned long),
+	.value = &crashk_size,
+};
+
+static void __init export_crashk_values(struct device_node *node)
+{
+	struct property *prop;
+
+	/* There might be existing crash kernel properties, but we can't
+	 * be sure what's in them, so remove them. */
+	prop = of_find_property(node, "linux,crashkernel-base", NULL);
+	if (prop)
+		prom_remove_property(node, prop);
+
+	prop = of_find_property(node, "linux,crashkernel-size", NULL);
+	if (prop)
+		prom_remove_property(node, prop);
+
+	if (crashk_res.start != 0) {
+		prom_add_property(node, &crashk_base_prop);
+		crashk_size = crashk_res.end - crashk_res.start + 1;
+		prom_add_property(node, &crashk_size_prop);
+	}
+
+	of_node_put(node);
+}
+
 static int __init kexec_setup(void)
 {
 	struct device_node *node;
@@ -135,6 +171,8 @@ static int __init kexec_setup(void)
 	kernel_end = __pa(_end);
 	prom_add_property(node, &kernel_end_prop);
 
+	export_crashk_values(node);
+
 	of_node_put(node);
 	return 0;
 }
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index c30678d..2aab296 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -322,52 +322,9 @@ static void __init export_htab_values(void)
 	of_node_put(node);
 }
 
-static struct property crashk_base_prop = {
-	.name = "linux,crashkernel-base",
-	.length = sizeof(unsigned long),
-	.value = &crashk_res.start,
-};
-
-static unsigned long crashk_size;
-
-static struct property crashk_size_prop = {
-	.name = "linux,crashkernel-size",
-	.length = sizeof(unsigned long),
-	.value = &crashk_size,
-};
-
-static void __init export_crashk_values(void)
-{
-	struct device_node *node;
-	struct property *prop;
-
-	node = of_find_node_by_path("/chosen");
-	if (!node)
-		return;
-
-	/* There might be existing crash kernel properties, but we can't
-	 * be sure what's in them, so remove them. */
-	prop = of_find_property(node, "linux,crashkernel-base", NULL);
-	if (prop)
-		prom_remove_property(node, prop);
-
-	prop = of_find_property(node, "linux,crashkernel-size", NULL);
-	if (prop)
-		prom_remove_property(node, prop);
-
-	if (crashk_res.start != 0) {
-		prom_add_property(node, &crashk_base_prop);
-		crashk_size = crashk_res.end - crashk_res.start + 1;
-		prom_add_property(node, &crashk_size_prop);
-	}
-
-	of_node_put(node);
-}
-
 static int __init kexec_setup(void)
 {
 	export_htab_values();
-	export_crashk_values();
 	return 0;
 }
 __initcall(kexec_setup);
-- 
1.5.5.4