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Commit 6f68b5e2 authored by Vasant Hegde's avatar Vasant Hegde Committed by Benjamin Herrenschmidt
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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: default avatarVasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent ef1313de

arch/powerpc/include/asm/opal.h

+3 −0
Original line number Diff line number Diff line
@@ -601,6 +601,9 @@ typedef struct oppanel_line { 
	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);

arch/powerpc/platforms/powernv/opal.c

+19 −0
Original line number Diff line number Diff line
@@ -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 @@ static irqreturn_t opal_interrupt(int irq, void *data) 
	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 @@ static int __init opal_init(void) 
				   " (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);