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Subject[PATCH 16/43] MN10300: Provide a MN10300_CACHE_ENABLED config option
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Date
Provide a MN10300_CACHE_ENABLED config option as inverted logic of
MN10300_CACHE_DISABLED to make things simpler.

Signed-off-by: David Howells <dhowells@redhat.com>
---
arch/mn10300/include/asm/cacheflush.h | 6 +++---
arch/mn10300/include/asm/gdb-stub.h | 2 +-
arch/mn10300/include/asm/processor.h | 4 ++--
arch/mn10300/kernel/Makefile | 2 +-
arch/mn10300/kernel/head.S | 6 +++---
arch/mn10300/mm/Kconfig.cache | 3 +++
6 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/arch/mn10300/include/asm/cacheflush.h b/arch/mn10300/include/asm/cacheflush.h
index 29e692f..b85be1d 100644
--- a/arch/mn10300/include/asm/cacheflush.h
+++ b/arch/mn10300/include/asm/cacheflush.h
@@ -34,7 +34,7 @@
/*
* physically-indexed cache management
*/
-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED

extern void flush_icache_range(unsigned long start, unsigned long end);
extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg);
@@ -61,7 +61,7 @@ extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg);
/*
* primitive routines
*/
-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED
extern void mn10300_icache_inv(void);
extern void mn10300_dcache_inv(void);
extern void mn10300_dcache_inv_page(unsigned start);
@@ -103,7 +103,7 @@ extern void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size);
#define mn10300_dcache_flush_page(start) do {} while (0)
#define mn10300_dcache_flush_range(start, end) do {} while (0)
#define mn10300_dcache_flush_range2(start, size) do {} while (0)
-#endif /* CONFIG_MN10300_CACHE_DISABLED */
+#endif /* CONFIG_MN10300_CACHE_ENABLED */

/*
* internal debugging function
diff --git a/arch/mn10300/include/asm/gdb-stub.h b/arch/mn10300/include/asm/gdb-stub.h
index 41ed267..f5495ad 100644
--- a/arch/mn10300/include/asm/gdb-stub.h
+++ b/arch/mn10300/include/asm/gdb-stub.h
@@ -110,7 +110,7 @@ extern asmlinkage void gdbstub_exception(struct pt_regs *, enum exception_code);
extern asmlinkage void __gdbstub_bug_trap(void);
extern asmlinkage void __gdbstub_pause(void);

-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED
extern asmlinkage void gdbstub_purge_cache(void);
#else
#define gdbstub_purge_cache() do {} while (0)
diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h
index f7d4b0d..fd96c18 100644
--- a/arch/mn10300/include/asm/processor.h
+++ b/arch/mn10300/include/asm/processor.h
@@ -157,7 +157,7 @@ unsigned long get_wchan(struct task_struct *p);

static inline void prefetch(const void *x)
{
-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED
#ifdef CONFIG_MN10300_PROC_MN103E010
asm volatile ("nop; nop; dcpf (%0)" : : "r"(x));
#else
@@ -168,7 +168,7 @@ static inline void prefetch(const void *x)

static inline void prefetchw(const void *x)
{
-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED
#ifdef CONFIG_MN10300_PROC_MN103E010
asm volatile ("nop; nop; dcpf (%0)" : : "r"(x));
#else
diff --git a/arch/mn10300/kernel/Makefile b/arch/mn10300/kernel/Makefile
index 23f2ab6..c4289e3 100644
--- a/arch/mn10300/kernel/Makefile
+++ b/arch/mn10300/kernel/Makefile
@@ -17,7 +17,7 @@ obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-low.o
obj-$(CONFIG_GDBSTUB_ON_TTYSx) += gdb-io-serial.o gdb-io-serial-low.o
obj-$(CONFIG_GDBSTUB_ON_TTYSMx) += gdb-io-ttysm.o gdb-io-ttysm-low.o

-ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y)
+ifeq ($(CONFIG_MN10300_CACHE_ENABLED),y)
obj-$(CONFIG_GDBSTUB) += gdb-cache.o
endif

diff --git a/arch/mn10300/kernel/head.S b/arch/mn10300/kernel/head.S
index 14f27f3..a81e34f 100644
--- a/arch/mn10300/kernel/head.S
+++ b/arch/mn10300/kernel/head.S
@@ -61,18 +61,18 @@ _start:
btst CHCTR_ICBUSY|CHCTR_DCBUSY,d0 # wait till not busy
lne

-#ifndef CONFIG_MN10300_CACHE_DISABLED
+#ifdef CONFIG_MN10300_CACHE_ENABLED
#ifdef CONFIG_MN10300_CACHE_WBACK
#ifndef CONFIG_MN10300_CACHE_WBACK_NOWRALLOC
mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK,d0
#else
mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK|CHCTR_DCALMD,d0
-#endif /* CACHE_DISABLED */
+#endif /* NOWRALLOC */
#else
mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRTHROUGH,d0
#endif /* WBACK */
movhu d0,(a0) # enable
-#endif /* NOWRALLOC */
+#endif /* ENABLED */

# turn on RTS on the debug serial port if applicable
#ifdef CONFIG_MN10300_UNIT_ASB2305
diff --git a/arch/mn10300/mm/Kconfig.cache b/arch/mn10300/mm/Kconfig.cache
index f5599f4..56a88dd 100644
--- a/arch/mn10300/mm/Kconfig.cache
+++ b/arch/mn10300/mm/Kconfig.cache
@@ -30,3 +30,6 @@ config MN10300_CACHE_DISABLED
bool "Disabled"

endchoice
+
+config MN10300_CACHE_ENABLED
+ def_bool y if !MN10300_CACHE_DISABLED


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