powerpc/powernv: Create opal sysfs directory
Create /sys/firmware/opal directory. We wil use this
interface to fetch opal error logs, firmware update, etc.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 4cc33ba..ee0efd2 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -601,6 +601,9 @@
uint64_t line_len;
} oppanel_line_t;
+/* /sys/firmware/opal */
+extern struct kobject *opal_kobj;
+
/* API functions */
int64_t opal_console_write(int64_t term_number, __be64 *length,
const uint8_t *buffer);
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 09336f0..37f0658 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -17,11 +17,15 @@
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <linux/slab.h>
+#include <linux/kobject.h>
#include <asm/opal.h>
#include <asm/firmware.h>
#include "powernv.h"
+/* /sys/firmware/opal */
+struct kobject *opal_kobj;
+
struct opal {
u64 base;
u64 entry;
@@ -375,6 +379,17 @@
return IRQ_HANDLED;
}
+static int opal_sysfs_init(void)
+{
+ opal_kobj = kobject_create_and_add("opal", firmware_kobj);
+ if (!opal_kobj) {
+ pr_warn("kobject_create_and_add opal failed\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
static int __init opal_init(void)
{
struct device_node *np, *consoles;
@@ -420,6 +435,10 @@
" (0x%x)\n", rc, irq, hwirq);
opal_irqs[i] = irq;
}
+
+ /* Create "opal" kobject under /sys/firmware */
+ rc = opal_sysfs_init();
+
return 0;
}
subsys_initcall(opal_init);