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path: root/arch/powerpc/kernel/machine_kexec_64.c
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Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_64.c')
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c78
1 files changed, 8 insertions, 70 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index 3c4ca046e854..49e705fcee6d 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -289,7 +289,7 @@ void default_machine_kexec(struct kimage *image)
}
/* Values we need to export to the second kernel via the device tree. */
-static unsigned long htab_base, kernel_end;
+static unsigned long htab_base;
static struct property htab_base_prop = {
.name = "linux,htab-base",
@@ -303,25 +303,20 @@ static struct property htab_size_prop = {
.value = &htab_size_bytes,
};
-static struct property kernel_end_prop = {
- .name = "linux,kernel-end",
- .length = sizeof(unsigned long),
- .value = &kernel_end,
-};
-
-static void __init export_htab_values(void)
+static int __init export_htab_values(void)
{
struct device_node *node;
struct property *prop;
+ /* On machines with no htab htab_address is NULL */
+ if (!htab_address)
+ return -ENODEV;
+
node = of_find_node_by_path("/chosen");
if (!node)
- return;
+ return -ENODEV;
/* remove any stale propertys so ours can be found */
- prop = of_find_property(node, kernel_end_prop.name, NULL);
- if (prop)
- prom_remove_property(node, prop);
prop = of_find_property(node, htab_base_prop.name, NULL);
if (prop)
prom_remove_property(node, prop);
@@ -329,68 +324,11 @@ static void __init export_htab_values(void)
if (prop)
prom_remove_property(node, prop);
- /* information needed by userspace when using default_machine_kexec */
- kernel_end = __pa(_end);
- prom_add_property(node, &kernel_end_prop);
-
- /* On machines with no htab htab_address is NULL */
- if (NULL == htab_address)
- goto out;
-
htab_base = __pa(htab_address);
prom_add_property(node, &htab_base_prop);
prom_add_property(node, &htab_size_prop);
- out:
- 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);
+late_initcall(export_htab_values);