5 files changed, 0 insertions, 93 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 266d422991e8..2e8589a6fd2f 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -757,17 +757,6 @@ config ENTRY_OFFSET
 	default "0x00010000" if PAGE_SIZE_64KB
 	default "0x00000000"
 
-config UBC_WAKEUP
-	bool "Wakeup UBC on startup"
-	depends on CPU_SH4 && !CPU_SH4A
-	help
-	  Selecting this option will wakeup the User Break Controller (UBC) on
-	  startup. Although the UBC is left in an awake state when the processor
-	  comes up, some boot loaders misbehave by putting the UBC to sleep in a
-	  power saving state, which causes issues with things like ptrace().
-
-	  If unsure, say N.
-
 choice
 	prompt "Kernel command line"
 	optional
diff --git a/arch/sh/include/asm/ubc.h b/arch/sh/include/asm/ubc.h
index 4ca4b7717371..9bf961684431 100644
--- a/arch/sh/include/asm/ubc.h
+++ b/arch/sh/include/asm/ubc.h
@@ -60,16 +60,5 @@
 #define BRCR_UBDE		(1 << 0)
 #endif
 
-#ifndef __ASSEMBLY__
-/* arch/sh/kernel/cpu/ubc.S */
-extern void ubc_sleep(void);
-
-#ifdef CONFIG_UBC_WAKEUP
-extern void ubc_wakeup(void);
-#else
-#define ubc_wakeup()	do { } while (0)
-#endif
-#endif
-
 #endif /* __KERNEL__ */
 #endif /* __ASM_SH_UBC_H */
diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile
index 3d6b9312dc47..d97c803719ec 100644
--- a/arch/sh/kernel/cpu/Makefile
+++ b/arch/sh/kernel/cpu/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_ARCH_SHMOBILE)	+= shmobile/
 
 # Common interfaces.
 
-obj-$(CONFIG_UBC_WAKEUP)	+= ubc.o
 obj-$(CONFIG_SH_ADC)		+= adc.o
 obj-$(CONFIG_SH_CLK_CPG)	+= clock-cpg.o
 
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index e932ebef4738..580d58b94cc5 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -338,17 +338,6 @@ asmlinkage void __init sh_cpu_init(void)
 	}
 #endif
 
-	/*
-	 * Some brain-damaged loaders decided it would be a good idea to put
-	 * the UBC to sleep. This causes some issues when it comes to things
-	 * like PTRACE_SINGLESTEP or doing hardware watchpoints in GDB.  So ..
-	 * we wake it up and hope that all is well.
-	 */
-#ifdef CONFIG_SUPERH32
-	if (raw_smp_processor_id() == 0)
-		ubc_wakeup();
-#endif
-
 	speculative_execution_init();
 	expmask_init();
 }
diff --git a/arch/sh/kernel/cpu/ubc.S b/arch/sh/kernel/cpu/ubc.S
deleted file mode 100644
index 81923079fa12..000000000000
--- a/arch/sh/kernel/cpu/ubc.S
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * arch/sh/kernel/cpu/ubc.S
- *
- * Set of management routines for the User Break Controller (UBC)
- *
- * Copyright (C) 2002 Paul Mundt
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-#include <linux/linkage.h>
-#include <asm/ubc.h>
-
-#define STBCR2		0xffc00010
-
-ENTRY(ubc_sleep)
-	mov	#0, r0
-
-	mov.l	1f, r1		! Zero out UBC_BBRA ..
-	mov.w	r0, @r1
-
-	mov.l	2f, r1		! .. same for BBRB ..
-	mov.w	r0, @r1
-
-	mov.l	3f, r1		! .. and again for BRCR.
-	mov.w	r0, @r1
-
-	mov.w	@r1, r0		! Dummy read BRCR
-
-	mov.l	4f, r1		! Set MSTP5 in STBCR2
-	mov.b	@r1, r0
-	or	#0x01, r0
-	mov.b	r0, @r1
-
-	mov.b	@r1, r0		! Two dummy reads ..
-	mov.b	@r1, r0
-
-	rts
-	nop
-
-ENTRY(ubc_wakeup)
-	mov.l	4f, r1		! Clear MSTP5
-	mov.b	@r1, r0
-	and	#0xfe, r0
-	mov.b	r0, @r1
-
-	mov.b	@r1, r0		! Two more dummy reads ..
-	mov.b	@r1, r0
-
-	rts
-	nop
-
-1:	.long	UBC_BBRA
-2:	.long	UBC_BBRB
-3:	.long	UBC_BRCR
-4:	.long	STBCR2
-