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Code Issues Releases Wiki Activity

Move untested board enable documentation to manpage

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This also checks the testedness of boards in all cases, not just for
PCI/DMI detection.

Corresponding to flashrom svn r926.

Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Michael Karcher 2010-03-07 22:29:28 +00:00
parent 5fdf270450
commit 7f0c3ec56b
2 changed files with 58 additions and 24 deletions
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41
board_enable.c
View File

@ -1425,30 +1425,6 @@ static struct board_pciid_enable *board_match_pci_card_ids(void)
}
}
if (board->status == NT) {
if (!force_boardenable)
{
printf("WARNING: Your mainboard is %s %s, but the mainboard-specific\n"
"code has not been marked as working. To help flashrom development, please\n"
"test flashrom on your board. As the code to support your board is untested,\n"
"we strongly recommend that as an additional safety measure you make\n"
"store backup of your current ROM contents (obtained by flashrom -r) on\n"
"a medium that can be accessed from a different computer (like an USB\n"
"drive or a network share of another system) before you try to erase or\n"
"write.\n"
"The untested code does not run unless you specify the\n"
" \"-p internal:boardenable=force\" command line option. Depending on your\n"
"hardware environment, erasing, writing or even probing can fail without\n"
"running the board specific code. Running the board-specific code might\n"
"cause your computer to behave erratically if it is wrong.\n"
"Please report the results of running the board enable code to\n"
"flashrom@flashrom.org.\n",
board->vendor_name, board->board_name);
continue;
}
printf("NOTE: Running an untested board enable procedure.\n"
"Please report success/failure to flashrom@flashrom.org\n");
}
return board;
}
@ -1466,6 +1442,23 @@ int board_flash_enable(const char *vendor, const char *part)
if (!board)
board = board_match_pci_card_ids();
if (board->status == NT) {
if (!force_boardenable)
{
printf("WARNING: Your mainboard is %s %s, but the mainboard-specific\n"
"code has not been tested, and thus will not not be executed by default.\n"
"Depending on your hardware environment, erasing, writing or even probing\n"
"can fail without running the board specific code.\n\n"
"Please see the man page (section PROGRAMMER SPECIFIC INFO, subsection\n"
"\"internal programmer\") for details\n",
board->vendor_name, board->board_name);
board = NULL;
}
else
printf("NOTE: Running an untested board enable procedure.\n"
"Please report success/failure to flashrom@flashrom.org\n");
}
if (board) {
if (board->max_rom_decode_parallel)
max_rom_decode.parallel =

41
flashrom.8
View File

@ -175,6 +175,47 @@ colon. While some programmers take arguments at fixed positions, other
programmers use a key/value interface in which the key and value is separated
by an equal sign and different pairs are separated by a comma or a colon.
.TP
.BR "internal " programmer
Some mainboards require to run mainboard specific code to enable flash erase
and write support (and probe support on old systems with parallel flash).
The mainboard brand and model (if it requires specific code) is usually
autodetected using one of the following mechanisms: If your system is
running coreboot, the mainboard type is determined from the coreboot table,
otherwise, the mainboard is detected by examining the onboard PCI devices
and possibly DMI info. If PCI and DMI do not contain information to uniquely
identify the mainboard (which is the exception), it might be necessary to
specify the mainboard using the \-m switch (see above).
.sp
Some of these board-specific flash enabling functions (called board enables)
in flashrom have not yet been tested. If your mainboard is detected needing
an untested board enable function, a warning message is printed and the
board enable is not executed, because a wrong board enable function might
cause the system to behave erratically, as board enable functions touch the
low-level internals of a mainboard. Not executing a board enable function
(if one is needed) might cause detection or erasing failure. If your board
protects only part of the flash (commonly the top end, called boot block),
flashrom might encounter an error only after erasing the unprotected part,
so running without the board-enable function might be dangerous for erase
and write (which includes erase).
.sp
The suggested procedure for a mainboard with untested board specific code is
to first try to probe the ROM (just invoke flashrom and check that it
detects your flash chip type) without running the board enable code (i.e.
without any parameters). If it finds your chip, fine, otherwise, retry
probing your chip with the board-enable code running, using
.sp
.B "flashrom -p internal:boardenable=force"
.sp
If your chip is still not detected, the board enable code seems to be broken
or the flash chip unsupported. Otherwise, make a backup of your current ROM
contents (using \-r) and store it to a medium outside of your computer, like
an USB drive or a network share. If you needed to run the board enable code
already for probing, use it for reading too. Now you can try to write the
new image. You should enable the board enable code in any case now, as it
has been written because it is known that writing/erasing without the board
enable is going to fail. In any case (success or failure), please report to
the flashrom mailing list, see below.
.sp
.BR "dummy " programmer
An optional parameter specifies the bus types it
should support. For that you have to use the