[IA64] remove CONFIG_IA64_SGI_SN_SIM

This patch removes the CONFIG_IA64_SGI_SN_SIM option entirely, allowing
any kernel bootable on sn2 to also be booted in the simulator.

Boot tested on Altix and HP rx2600.
Signed-off-by: Greg Edwards <edwardsg@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/Kconfig

@@ -220,13 +220,6 @@ config IOSAPIC
 	depends on !IA64_HP_SIM
 	default y
 
-config IA64_SGI_SN_SIM
-	bool "SGI Medusa Simulator Support"
-	depends on IA64_SGI_SN2 || IA64_GENERIC
-	help
-	  If you are compiling a kernel that will run under SGI's IA-64
-	  simulator (Medusa) then say Y, otherwise say N.
-
 config IA64_SGI_SN_XP
 	tristate "Support communication between SGI SSIs"
 	select IA64_UNCACHED_ALLOCATOR

arch/ia64/configs/sn2_defconfig

@@ -81,7 +81,6 @@ CONFIG_HOLES_IN_ZONE=y
 CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
 # CONFIG_IA64_CYCLONE is not set
 CONFIG_IOSAPIC=y
-CONFIG_IA64_SGI_SN_SIM=y
 CONFIG_FORCE_MAX_ZONEORDER=18
 CONFIG_SMP=y
 CONFIG_NR_CPUS=512

include/asm-ia64/sn/simulator.h

@@ -13,16 +13,9 @@
 #define SNMAGIC 0xaeeeeeee8badbeefL
 #define IS_MEDUSA()			({long sn; asm("mov %0=cpuid[%1]" : "=r"(sn) : "r"(2)); sn == SNMAGIC;})
 
-#ifdef CONFIG_IA64_SGI_SN_SIM
 #define SIMULATOR_SLEEP()		asm("nop.i 0x8beef")
-#define IS_RUNNING_ON_SIMULATOR() 	(sn_prom_type)
+#define IS_RUNNING_ON_SIMULATOR()	(sn_prom_type)
 #define IS_RUNNING_ON_FAKE_PROM()	(sn_prom_type == 2)
 extern int sn_prom_type;		/* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
-#else
-#define IS_RUNNING_ON_SIMULATOR()	(0)
-#define IS_RUNNING_ON_FAKE_PROM()	(0)
-#define SIMULATOR_SLEEP()
-
-#endif
 
 #endif /* _ASM_IA64_SN_SIMULATOR_H */