1 files changed, 27 insertions, 0 deletions
@@ -8,6 +8,7 @@ flashrom \- detect, read, write, verify and erase flash chips
[\fB\-c\fR <chipname>] \
[\fB\-i\fR <image>] [\fB\-p\fR <programmername>[:<parameters>]]
+ [\fB-o\fR <logfile>]
is a utility for detecting, reading, writing, verifying and erasing flash
@@ -220,6 +221,13 @@ lists all supported programmers.
.B "\-h, \-\-help"
Show a help text and exit.
+.B "\-o, \-\-output <logfile>"
+Save the full debug log to
+.BR <logfile> .
+If the file already exists, it will be overwritten. This is the recommended
+way to gather logs from flashrom because they will be verbose even if the
+on-screen messages are not verbose.
.B "\-R, \-\-version"
Show version information and exit.
.SH PROGRAMMER SPECIFIC INFO
@@ -697,6 +705,25 @@ syntax where
is the Linux device node for your SPI controller.
Please note that the linux_spi driver only works on Linux.
+To back up and update your BIOS, run
+.B flashrom -p internal -r backup.rom -o backuplog.txt
+.B flashrom -p internal -w newbios.rom -o writelog.txt
+Please make sure to copy backup.rom to some external media before you try
+to write. That makes offline recovery easier.
+If writing fails and flashrom complains about the chip being in an unknown
+state, you can try to restore the backup by running
+.B flashrom -p internal -w backup.rom -o restorelog.txt
+If you encounter any problems, please contact us and supply
+backuplog.txt, writelog.txt and restorelog.txt. See section
+for contact info.
.SH EXIT STATUS
flashrom exits with 0 on success, 1 on most failures but with 2 if /dev/mem
(/dev/xsvc on Solaris) can not be opened and with 3 if a call to mmap() fails.