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| author | Michael Brown | 2019-02-19 19:47:12 +0100 |
|---|---|---|
| committer | Michael Brown | 2019-02-19 20:02:11 +0100 |
| commit | 64b4452bca04af433f1c98ab782c0e93cd5c88c0 (patch) | |
| tree | aad8c645e893ac233481e64de6ea8b3a69a817f9 /src/include/ipxe | |
| parent | [init] Show startup and shutdown function names in debug messages (diff) | |
| download | ipxe-64b4452bca04af433f1c98ab782c0e93cd5c88c0.tar.gz ipxe-64b4452bca04af433f1c98ab782c0e93cd5c88c0.tar.xz ipxe-64b4452bca04af433f1c98ab782c0e93cd5c88c0.zip | |
[efi] Blacklist the Dell Ip4ConfigDxe driver
On a Dell OptiPlex 7010, calling DisconnectController() on the LOM
device handle will lock up the system. Debugging shows that execution
is trapped in an infinite loop that is somehow trying to reconnect
drivers (without going via ConnectController()).
The problem can be reproduced in the UEFI shell with no iPXE code
present, by using the "disconnect" command. Experimentation shows
that the only fix is to unload (rather than just disconnect) the
"Ip4ConfigDxe" driver.
Add the concept of a blacklist of UEFI drivers that will be
automatically unloaded when iPXE runs as an application, and add the
Dell Ip4ConfigDxe driver to this blacklist.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe')
| -rw-r--r-- | src/include/ipxe/efi/efi_blacklist.h | 13 | ||||
| -rw-r--r-- | src/include/ipxe/errfile.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/include/ipxe/efi/efi_blacklist.h b/src/include/ipxe/efi/efi_blacklist.h new file mode 100644 index 00000000..c5a5a61d --- /dev/null +++ b/src/include/ipxe/efi/efi_blacklist.h @@ -0,0 +1,13 @@ +#ifndef _IPXE_EFI_BLACKLIST_H +#define _IPXE_EFI_BLACKLIST_H + +/** @file + * + * EFI driver blacklist + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +extern void efi_unload_blacklist ( void ); + +#endif /* _IPXE_EFI_BLACKLIST_H */ diff --git a/src/include/ipxe/errfile.h b/src/include/ipxe/errfile.h index 596491a1..ce67fc66 100644 --- a/src/include/ipxe/errfile.h +++ b/src/include/ipxe/errfile.h @@ -375,6 +375,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #define ERRFILE_cert_cmd ( ERRFILE_OTHER | 0x004f0000 ) #define ERRFILE_acpi_settings ( ERRFILE_OTHER | 0x00500000 ) #define ERRFILE_ntlm ( ERRFILE_OTHER | 0x00510000 ) +#define ERRFILE_efi_blacklist ( ERRFILE_OTHER | 0x00520000 ) /** @} */ |