b920de1b77
Add architecture support for the MN10300/AM33 CPUs produced by MEI to the kernel. This patch also adds board support for the ASB2303 with the ASB2308 daughter board, and the ASB2305. The only processor supported is the MN103E010, which is an AM33v2 core plus on-chip devices. [akpm@linux-foundation.org: nuke cvs control strings] Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com> Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* MN10300 Reset controller and watchdog timer definitions
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_RESET_REGS_H
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#define _ASM_RESET_REGS_H
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#include <asm/cpu-regs.h>
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#include <asm/exceptions.h>
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#ifdef __KERNEL__
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#ifdef CONFIG_MN10300_WD_TIMER
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#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
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#endif
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/*
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* watchdog timer registers
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*/
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#define WDBC __SYSREGC(0xc0001000, u8) /* watchdog binary counter reg */
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#define WDCTR __SYSREG(0xc0001002, u8) /* watchdog timer control reg */
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#define WDCTR_WDCK 0x07 /* clock source selection */
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#define WDCTR_WDCK_256th 0x00 /* - OSCI/256 */
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#define WDCTR_WDCK_1024th 0x01 /* - OSCI/1024 */
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#define WDCTR_WDCK_2048th 0x02 /* - OSCI/2048 */
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#define WDCTR_WDCK_16384th 0x03 /* - OSCI/16384 */
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#define WDCTR_WDCK_65536th 0x04 /* - OSCI/65536 */
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#define WDCTR_WDRST 0x40 /* binary counter reset */
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#define WDCTR_WDCNE 0x80 /* watchdog timer enable */
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#define RSTCTR __SYSREG(0xc0001004, u8) /* reset control reg */
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#define RSTCTR_CHIPRST 0x01 /* chip reset */
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#define RSTCTR_DBFRST 0x02 /* double fault reset flag */
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#define RSTCTR_WDTRST 0x04 /* watchdog timer reset flag */
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#define RSTCTR_WDREN 0x08 /* watchdog timer reset enable */
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#ifndef __ASSEMBLY__
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static inline void mn10300_proc_hard_reset(void)
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{
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RSTCTR &= ~RSTCTR_CHIPRST;
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RSTCTR |= RSTCTR_CHIPRST;
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}
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extern unsigned int watchdog_alert_counter;
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extern void watchdog_go(void);
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extern asmlinkage void watchdog_handler(void);
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extern asmlinkage
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void watchdog_interrupt(struct pt_regs *, enum exception_code);
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#endif
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#endif /* __KERNEL__ */
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#endif /* _ASM_RESET_REGS_H */
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