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authorPaul Brook <paul@codesourcery.com>2008-04-18 22:43:07 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2008-04-18 22:43:07 +0100
commit48d7927bdf071d05cf5d15b816cf06b0937cb84f (patch)
tree60f82f25897f9b3fd55148edac9348b451afc6cf /include/asm-arm
parentd7f864be8323e5394040e2877594645b0e7da85d (diff)
Add a prefetch abort handler
This patch adds a prefetch abort handler similar to the data abort one and renames the latter for consistency. Initial implementation by Paul Brook with some renaming by Catalin Marinas. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'include/asm-arm')
-rw-r--r--include/asm-arm/cpu-multi32.h4
-rw-r--r--include/asm-arm/glue.h87
2 files changed, 61 insertions, 30 deletions
diff --git a/include/asm-arm/cpu-multi32.h b/include/asm-arm/cpu-multi32.h
index 715e18a4add..3479de9266e 100644
--- a/include/asm-arm/cpu-multi32.h
+++ b/include/asm-arm/cpu-multi32.h
@@ -21,6 +21,10 @@ extern struct processor {
*/
void (*_data_abort)(unsigned long pc);
/*
+ * Retrieve prefetch fault address
+ */
+ unsigned long (*_prefetch_abort)(unsigned long lr);
+ /*
* Set up any processor specifics
*/
void (*_proc_init)(void);
diff --git a/include/asm-arm/glue.h b/include/asm-arm/glue.h
index 22274ce8137..a97a182ba28 100644
--- a/include/asm-arm/glue.h
+++ b/include/asm-arm/glue.h
@@ -40,83 +40,110 @@
* v6_early - ARMv6 generic early abort handler
* v7_early - ARMv7 generic early abort handler
*/
-#undef CPU_ABORT_HANDLER
-#undef MULTI_ABORT
+#undef CPU_DABORT_HANDLER
+#undef MULTI_DABORT
#if defined(CONFIG_CPU_ARM610)
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER cpu_arm6_data_abort
+# define CPU_DABORT_HANDLER cpu_arm6_data_abort
# endif
#endif
#if defined(CONFIG_CPU_ARM710)
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER cpu_arm7_data_abort
+# define CPU_DABORT_HANDLER cpu_arm7_data_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_LV4T
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v4t_late_abort
+# define CPU_DABORT_HANDLER v4t_late_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV4
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v4_early_abort
+# define CPU_DABORT_HANDLER v4_early_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV4T
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v4t_early_abort
+# define CPU_DABORT_HANDLER v4t_early_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV5TJ
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v5tj_early_abort
+# define CPU_DABORT_HANDLER v5tj_early_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV5T
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v5t_early_abort
+# define CPU_DABORT_HANDLER v5t_early_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV6
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v6_early_abort
+# define CPU_DABORT_HANDLER v6_early_abort
# endif
#endif
#ifdef CONFIG_CPU_ABRT_EV7
-# ifdef CPU_ABORT_HANDLER
-# define MULTI_ABORT 1
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
# else
-# define CPU_ABORT_HANDLER v7_early_abort
+# define CPU_DABORT_HANDLER v7_early_abort
# endif
#endif
-#ifndef CPU_ABORT_HANDLER
+#ifndef CPU_DABORT_HANDLER
#error Unknown data abort handler type
#endif
+/*
+ * Prefetch abort handler. If the CPU has an IFAR use that, otherwise
+ * use the address of the aborted instruction
+ */
+#undef CPU_PABORT_HANDLER
+#undef MULTI_PABORT
+
+#ifdef CONFIG_CPU_PABRT_IFAR
+# ifdef CPU_PABORT_HANDLER
+# define MULTI_PABORT 1
+# else
+# define CPU_PABORT_HANDLER(reg, insn) mrc p15, 0, reg, cr6, cr0, 2
+# endif
+#endif
+
+#ifdef CONFIG_CPU_PABRT_NOIFAR
+# ifdef CPU_PABORT_HANDLER
+# define MULTI_PABORT 1
+# else
+# define CPU_PABORT_HANDLER(reg, insn) mov reg, insn
+# endif
+#endif
+
+#ifndef CPU_PABORT_HANDLER
+#error Unknown prefetch abort handler type
+#endif
+
#endif