powerpc/fsl-booke64: Add support for Debug Level exception handler
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index c2ec0a1..a88bf27 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -62,6 +62,7 @@
#include <asm/udbg.h>
#include <asm/kexec.h>
#include <asm/mmu_context.h>
+#include <asm/code-patching.h>
#include "setup.h"
@@ -477,6 +478,9 @@
#ifdef CONFIG_PPC_BOOK3E
static void __init exc_lvl_early_init(void)
{
+ extern unsigned int interrupt_base_book3e;
+ extern unsigned int exc_debug_debug_book3e;
+
unsigned int i;
for_each_possible_cpu(i) {
@@ -487,6 +491,10 @@
mcheckirq_ctx[i] = (struct thread_info *)
__va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
}
+
+ if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
+ patch_branch(&interrupt_base_book3e + (0x040 / 4) + 1,
+ (unsigned long)&exc_debug_debug_book3e, 0);
}
#else
#define exc_lvl_early_init()