[1/6] arm: Disable outer (L2) cache in kexec

Commit Message

Santosh Shilimkar Sept. 7, 2010, 7:57 a.m. UTC

None

Patch

diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
index 25f76ba..fc19009 100644
--- a/arch/arm/include/asm/outercache.h
+++ b/arch/arm/include/asm/outercache.h
@@ -25,6 +25,9 @@  struct outer_cache_fns {
 	void (*inv_range)(unsigned long, unsigned long);
 	void (*clean_range)(unsigned long, unsigned long);
 	void (*flush_range)(unsigned long, unsigned long);
+	void (*flush_all)(void);
+	void (*inv_all)(void);
+	void (*disable)(void);
 #ifdef CONFIG_OUTER_CACHE_SYNC
 	void (*sync)(void);
 #endif
@@ -50,6 +53,24 @@  static inline void outer_flush_range(unsigned long start, unsigned long end)
 		outer_cache.flush_range(start, end);
 }
 
+static inline void outer_flush_all(void)
+{
+	if (outer_cache.flush_all)
+		outer_cache.flush_all();
+}
+
+static inline void outer_inv_all(void)
+{
+	if (outer_cache.inv_all)
+		outer_cache.inv_all();
+}
+
+static inline void outer_disable(void)
+{
+	if (outer_cache.disable)
+		outer_cache.disable();
+}
+
 #else
 
 static inline void outer_inv_range(unsigned long start, unsigned long end)
@@ -58,6 +79,9 @@  static inline void outer_clean_range(unsigned long start, unsigned long end)
 { }
 static inline void outer_flush_range(unsigned long start, unsigned long end)
 { }
+static inline void outer_flush_all(void) { }
+static inline void outer_inv_all(void) { }
+static inline void outer_disable(void) { }
 
 #endif
 
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 1fc74cb..3a8fd51 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -78,7 +78,10 @@  void machine_kexec(struct kimage *image)
 	local_fiq_disable();
 	setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/
 	flush_cache_all();
+	outer_flush_all();
+	outer_disable();
 	cpu_proc_fin();
+	outer_inv_all();
 	flush_cache_all();
 	cpu_reset(reboot_code_buffer_phys);
 }