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| author | Michael Brown | 2015-08-03 13:39:05 +0200 |
|---|---|---|
| committer | Michael Brown | 2015-08-03 13:48:02 +0200 |
| commit | c6b299df2047adb87fcfa3a132b6ff06633dbc90 (patch) | |
| tree | 7ecdae5397b22e8ba88143eaee53091f2d49c272 /src/include/ipxe | |
| parent | [crypto] Support SHA-{224,384,512} in X.509 certificates (diff) | |
| download | ipxe-c6b299df2047adb87fcfa3a132b6ff06633dbc90.tar.gz ipxe-c6b299df2047adb87fcfa3a132b6ff06633dbc90.tar.xz ipxe-c6b299df2047adb87fcfa3a132b6ff06633dbc90.zip | |
[efi] Hold off watchdog timer while running
UEFI platforms may provide a watchdog timer, which will reboot the
machine if an operating system takes more than five minutes to load.
This can cause long-lived iPXE downloads (or interactive shell
sessions) to unexpectedly reboot.
Fix by resetting the watchdog timer every ten seconds while the iPXE
main processing loop continues to run.
Reported-by: Bradley B Williams <bradleybwilliams@swbell.net>
Reported-by: John Clark <john.r.clark.3@gmail.com>
Reported-by: wdriever@gmail.com
Reported-by: Charlie Beima <cbeima@indiana.edu>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe')
| -rw-r--r-- | src/include/ipxe/efi/efi_watchdog.h | 31 | ||||
| -rw-r--r-- | src/include/ipxe/errfile.h | 1 |
2 files changed, 32 insertions, 0 deletions
diff --git a/src/include/ipxe/efi/efi_watchdog.h b/src/include/ipxe/efi/efi_watchdog.h new file mode 100644 index 000000000..4a56b9a29 --- /dev/null +++ b/src/include/ipxe/efi/efi_watchdog.h @@ -0,0 +1,31 @@ +#ifndef _IPXE_EFI_WATCHDOG_H +#define _IPXE_EFI_WATCHDOG_H + +/** @file + * + * EFI watchdog holdoff timer + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +extern struct retry_timer efi_watchdog; + +/** + * Start EFI watchdog holdoff timer + * + */ +static inline void efi_watchdog_start ( void ) { + + start_timer_nodelay ( &efi_watchdog ); +} + +/** + * Stop EFI watchdog holdoff timer + * + */ +static inline void efi_watchdog_stop ( void ) { + + stop_timer ( &efi_watchdog ); +} + +#endif /* _IPXE_EFI_WATCHDOG_H */ diff --git a/src/include/ipxe/errfile.h b/src/include/ipxe/errfile.h index 9976387d6..b48d2a0ce 100644 --- a/src/include/ipxe/errfile.h +++ b/src/include/ipxe/errfile.h @@ -330,6 +330,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #define ERRFILE_efi_wrap ( ERRFILE_OTHER | 0x00460000 ) #define ERRFILE_vmbus ( ERRFILE_OTHER | 0x00470000 ) #define ERRFILE_efi_time ( ERRFILE_OTHER | 0x00480000 ) +#define ERRFILE_efi_watchdog ( ERRFILE_OTHER | 0x00490000 ) /** @} */ |