Subject: [PATCH 07/15] ps3flash: Refuse to work in lpars other than OtherOS

From: Andre Heider <[email-masked]>
Date: Mon, 1 Aug 2011 22:02:58 +0200

The driver implements a character and misc device, meant for the
axed OtherOS to exchange various settings with GameOS.
Since Firmware 3.21 there is no GameOS support anymore to write these
settings, so limit the driver to the OtherOS environment.

Signed-off-by: Andre Heider <[email-masked]>
---
 arch/powerpc/platforms/ps3/Kconfig |    1 +
 drivers/char/ps3flash.c            |    7 +++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig
index 84df5c8..5eb956a 100644
--- a/arch/powerpc/platforms/ps3/Kconfig
+++ b/arch/powerpc/platforms/ps3/Kconfig
@@ -121,6 +121,7 @@ config PS3_FLASH
 
 	  This support is required to access the PS3 FLASH ROM, which
 	  contains the boot loader and some boot options.
+	  This driver only supports the deprecated OtherOS LPAR.
 	  In general, all users will say Y or M.
 
 	  As this driver needs a fixed buffer of 256 KiB of memory, it can
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 69c734a..b1e8659 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -25,6 +25,7 @@
 
 #include <asm/lv1call.h>
 #include <asm/ps3stor.h>
+#include <asm/firmware.h>

 #define DEVICE_NAME		"ps3flash"
@@ -455,6 +456,12 @@ static struct ps3_system_bus_driver ps3flash = {
 
 static int __init ps3flash_init(void)
 {
+	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+		return -ENODEV;
+
+	if (ps3_get_ss_laid() != PS3_SS_LAID_OTHEROS)
+		return -ENODEV;
+
 	return ps3_system_bus_driver_register(&ps3flash);
 }
 
-- 
1.7.5.4