Many architectures support a way to detect why the bootloader is running.
This patch adds a global variable to be able to use the cause in some kind of
shell code to do special things on demand. For example to do an emergency boot,
when the last boot fails and the watchdog reactivate the hanging system.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This fixes
barebox@Very long board name:/ crc32 -f /dev/mem 0x83f00000+0xfff
CRC32 for /dev/mem 0x83fff000 ... 0x83fffffe ==> 0xa080584bbarebox@Very long board name:/
The problem here was that the return value of
lseek(fd, 0x83f00000, SEEK_SET) (which is 0x83f00000) was casted to an
int (which is -2081423360), returned to do_crc and interpreted as
error there without yielding another error message.
This also makes
crc32 -f /dev/mem 0xffffffff+0x1
die on a NULL pointer exception instead of reporting:
lseek: No error
:-)
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
While a set bit enables the pullup (if exists) it disables the bitkeeper (if
exists). Both features are using the same register bit and only one of this
feature is present on a per pin base.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The 'off_t cur_ofs' variable was missed during the 64 bit conversion.
For the MEMGETBADBLOCK ioctl, a pointer to a loff_t is needed.
Also adjust the debug format strings.
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since this commit we interpret the argument to the bad block ioctls
as a pointer to a 64bit number:
|commit e71c343668
|Author: Sascha Hauer <s.hauer@pengutronix.de>
|Date: Fri Oct 14 11:57:55 2011 +0200
|
| mtd: fix arguments to bad block ioctls
|
| In the Kernel the mtd ioctls expect a pointer to the offset, whereas
| barebox interprets the pointer itself as an offset. Since we want
| to add 64bit support for file sizes a pointer may not be sufficient,
| so align with the kernel and convert it to a pointer to the offset.
|
| Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This missed some places, fix them aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We have the following in the tree:
|commit af42feb9d2
|Author: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
|Date: Mon Jan 2 11:49:17 2012 +0100
|
| ARM: set SCTRL[A] only when architecture does not support unaligned access
|
| Recent gcc generates code with unaligned access when architecture
| supports it. Setting A bit unconditionally causes data-aborts on such
| code rendering barebox unusable.
|
| Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
| Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
What the patch tried is correct: We should set the A bit only when the architecture
does not support unaligned accesses. To figure out whether the architecture supports
unaligned accesses the patch tested for the U bit which is wrong. The U bit may be
0 after a reset, so instead of testing for the U bit we have to set it. This can
be done on armv6 and later. All others have the A bit set to trap unaligned accesses.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- add CMD_PARAM and read_param to get the ONFI structure
- fix OOB size for flash with 224 OOB on i.MX51/3
- add the same ecc layout as the one in the kernel for
4k page flashs
Tested on an i.MX53.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
the code is taken from linux & u-boot implementations
Validated on an i.MX53 which gives the following log :
ONFI flash detected ... ONFI param page 0 valid
NAND device: Manufacturer ID: 0x2c, Chip ID: 0x38 (Micron MT29F8G08ABABAWP), page size: 4096, OOB size: 224
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- add usage information
- add option parsing:
-v verbose
-v -v more verbose
-l list b´possible boot sources
-d dryrun
The dryrun option sets the global variables necessary for booting
but does not actually boot the system. This way it is possible to
make additional adjustments to the boot variables and then invoke
bootm manually.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Without arguments the 'md' command defaults to show address 0 which
likely results in a NULL pointer exception, so only three keystrokes
are necessary to crash barebox. Show usage instead if 'md' is invoked
without arguments, so that it at least requires an address to be given
to crash barebox. This increases the stability of barebox by 66%. Hurray!
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Make the nonopt arguments to a script available starting from $1
after running getopt. This allows for scripts which use option
parsing but also have nonopts.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This image header is used for booting from SPI using the TI User
Boot Loader (UBL).
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The standard devices are currently broken since they have
the size ~0. As now files use loff_t as file size which is a signed
type the read implementation gets confused and now returns -1.
The current implementation also has the (somewhat theorical) problem
that we do not have real streaming devices, so /dev/zero went out
of zeroes after reading 4GB (or now LLONG_MAX).
This patch introduces a new cdev flag DEVFS_IS_CHARACTER_DEV and a new
file size flag FILE_SIZE_STREAM which makes it possible to create
real stream devices instead.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Juergen Beisert
Christian Kapeller
Uwe Kleine-König
Antony Pavlov
Jan Luebbe
Sascha Hauer
Eric Bénard
Maxime Ripard
Alexey Galakhov