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powerpc/fsl-booke64: Add support for Debug Level exception handler

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Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
2011-04-06 00:18:48 -05:00
parent 134c428e5a
commit d36b4c4f3c
3 changed files with 73 additions and 4 deletions
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8
arch/powerpc/kernel/setup_64.c
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@@ -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 @@ static void __init irqstack_early_init(void)
#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 @@ static void __init exc_lvl_early_init(void)
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()