fb64c2446b
This updates m8xx_wdt as follows: 1) Remove now obsolete fpos check in the write() function. The driver is currently non functional due to this bug. 2) Use in/out macros for register access. 3) Allows m8xx_wdt to use a kernel timer instead of the builtin RTC/PIT for keep-alive trigger (which is responsible for servicing the watchdog until an userspace application takes over). For instance Cyclades PRxK boards (MPC 855T based) have a non-functional internal RTC/PIT unit. Behaviour for boards with RTC/PIT is unchaged. 4) The last change required moving the RTCSC register setting code to a weak function which can be overriden by board specific files. Otherwise the timer init code trashes the register making it impossible for m8xx_wdt to detect the situation. Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
20 lines
634 B
C
20 lines
634 B
C
/*
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* Author: Florian Schirmer <jolt@tuxbox.org>
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*
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* 2002 (c) Florian Schirmer <jolt@tuxbox.org> This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifndef _PPC_SYSLIB_M8XX_WDT_H
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#define _PPC_SYSLIB_M8XX_WDT_H
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extern int m8xx_has_internal_rtc;
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extern void m8xx_wdt_handler_install(bd_t * binfo);
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extern int m8xx_wdt_get_timeout(void);
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extern void m8xx_wdt_reset(void);
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extern void m8xx_wdt_install_timer(void);
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extern void m8xx_wdt_stop_timer(void);
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#endif /* _PPC_SYSLIB_M8XX_WDT_H */
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