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MIPS: Add board_ebase_setup()

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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>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2959/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin Cernekee 2011-11-16 01:25:45 +00:00 committed by Ralf Baechle
parent 34bd92e27b
commit 6fb97effee
2 changed files with 4 additions and 0 deletions
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1
arch/mips/include/asm/traps.h
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@ -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_nmi_handler_setup)(void);
extern void (*board_ejtag_handler_setup)(void); extern void (*board_ejtag_handler_setup)(void);
extern void (*board_bind_eic_interrupt)(int irq, int regset); 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); extern int register_nmi_notifier(struct notifier_block *nb);

3
arch/mips/kernel/traps.c
View File

@ -91,6 +91,7 @@ int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
void (*board_nmi_handler_setup)(void); void (*board_nmi_handler_setup)(void);
void (*board_ejtag_handler_setup)(void); void (*board_ejtag_handler_setup)(void);
void (*board_bind_eic_interrupt)(int irq, int regset); void (*board_bind_eic_interrupt)(int irq, int regset);
void (*board_ebase_setup)(void);
static void show_raw_backtrace(unsigned long reg29) static void show_raw_backtrace(unsigned long reg29)
@ -1691,6 +1692,8 @@ void __init trap_init(void)
ebase += (read_c0_ebase() & 0x3ffff000); ebase += (read_c0_ebase() & 0x3ffff000);
} }
if (board_ebase_setup)
board_ebase_setup();
per_cpu_trap_init(); per_cpu_trap_init();
/* /*