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| author | davidch <davidch@FreeBSD.org> | 2006-09-01 22:30:56 +0000 |
|---|---|---|
| committer | davidch <davidch@FreeBSD.org> | 2006-09-01 22:30:56 +0000 |
| commit | d04203c60c782e34612f234aaa7359712bd564ee (patch) | |
| tree | f79784d0ce53e8b88f1676fc4a201d9f411264e9 /sys/dev/bge/if_bgereg.h | |
| parent | f4983d42f5590ec7d593d77704fe71364e168786 (diff) | |
| download | FreeBSD-src-d04203c60c782e34612f234aaa7359712bd564ee.zip FreeBSD-src-d04203c60c782e34612f234aaa7359712bd564ee.tar.gz | |
/tmp/cvsleYf6y
Diffstat (limited to 'sys/dev/bge/if_bgereg.h')
| -rw-r--r-- | sys/dev/bge/if_bgereg.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/dev/bge/if_bgereg.h b/sys/dev/bge/if_bgereg.h index 7729dc9..1e30010 100644 --- a/sys/dev/bge/if_bgereg.h +++ b/sys/dev/bge/if_bgereg.h @@ -1768,10 +1768,11 @@ } while(0) /* - * This magic number is used to prevent PXE restart when we - * issue a software reset. We write this magic number to the - * firmware mailbox at 0xB50 in order to prevent the PXE boot - * code from running. + * This magic number is written to the firmware mailbox at 0xb50 + * before a software reset is issued. After the internal firmware + * has completed its initialization it will write the opposite of + * this value, ~BGE_MAGIC_NUMBER, to the same location, allowing the + * driver to synchronize with the firmware. */ #define BGE_MAGIC_NUMBER 0x4B657654 |
