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[PATCH V2 7/8] MIPS: Add board_ebase_setup()

To: Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH V2 7/8] MIPS: Add board_ebase_setup()
From: Kevin Cernekee <cernekee@gmail.com>
Date: Thu, 10 Nov 2011 22:30:30 -0800
Cc: linux-mips@linux-mips.org
In-reply-to: <5f9666eb295ce196b2a9688afab07dea@localhost>
References: <5f9666eb295ce196b2a9688afab07dea@localhost>
Sender: linux-mips-bounce@linux-mips.org
User-agent: vim 7.2
Some systems need to relocate the MIPS exception vector base during
trap initialization.  Add a hook to make this possible.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
---
 arch/mips/include/asm/traps.h |    1 +
 arch/mips/kernel/traps.c      |    3 +++
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/traps.h b/arch/mips/include/asm/traps.h
index 4edab87..ff74aec 100644
--- a/arch/mips/include/asm/traps.h
+++ b/arch/mips/include/asm/traps.h
@@ -24,6 +24,7 @@ extern int (*board_be_handler)(struct pt_regs *regs, int 
is_fixup);
 extern void (*board_nmi_handler_setup)(void);
 extern void (*board_ejtag_handler_setup)(void);
 extern void (*board_bind_eic_interrupt)(int irq, int regset);
+extern void (*board_ebase_setup)(void);
 
 extern int register_nmi_notifier(struct notifier_block *nb);
 
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 33945aa..c18dfd4 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -91,6 +91,7 @@ int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
 void (*board_nmi_handler_setup)(void);
 void (*board_ejtag_handler_setup)(void);
 void (*board_bind_eic_interrupt)(int irq, int regset);
+void (*board_ebase_setup)(void);
 
 
 static void show_raw_backtrace(unsigned long reg29)
@@ -1691,6 +1692,8 @@ void __init trap_init(void)
                        ebase += (read_c0_ebase() & 0x3ffff000);
        }
 
+       if (board_ebase_setup)
+               board_ebase_setup();
        per_cpu_trap_init();
 
        /*
-- 
1.7.6.3


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