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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/interface/efi/efi_snp.c | |
| 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/interface/efi/efi_snp.c')
| -rw-r--r-- | src/interface/efi/efi_snp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/interface/efi/efi_snp.c b/src/interface/efi/efi_snp.c index f3c45a957..1b21c40c4 100644 --- a/src/interface/efi/efi_snp.c +++ b/src/interface/efi/efi_snp.c @@ -32,6 +32,7 @@ FILE_LICENCE ( GPL2_OR_LATER ); #include <ipxe/efi/efi_driver.h> #include <ipxe/efi/efi_strings.h> #include <ipxe/efi/efi_utils.h> +#include <ipxe/efi/efi_watchdog.h> #include <ipxe/efi/efi_snp.h> #include <usr/autoboot.h> #include <config/general.h> @@ -881,9 +882,15 @@ efi_snp_load_file ( EFI_LOAD_FILE_PROTOCOL *load_file, /* Claim network devices for use by iPXE */ efi_snp_claim(); + /* Start watchdog holdoff timer */ + efi_watchdog_start(); + /* Boot from network device */ ipxe ( netdev ); + /* Stop watchdog holdoff timer */ + efi_watchdog_stop(); + /* Release network devices for use via SNP */ efi_snp_release(); |