The i.MX Processors support two different boot modes, the internal
boot mode and the external boot mode. Traditionally the external
NAND boot mode is handled in drivers/mtd/nand and the internal
boot mode is handled in arch/arm/mach-imx. This patch consolidates
the handling of both boot modes in arch/arm/mach-imx so that
the user does not have to look in the mtd kconfig section for
booting from NAND. Also, selecting between internal and external
boot mode now is a clear choice.
The external NAND boot mode has been independent of the mtd nand
driver, but as the code was contained in the NAND driver it was
not possible to support booting from NAND without a mtd nand driver.
This is changed with this patch.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
as barebox can be run as a second stage the first stage may have init it
before so re-used it
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Also adapt the config file to the default environment.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With this patch barebox can now be booted from RAM, NOR and NAND on the
mini2440 platform. 'CONFIG_S3C24XX_NAND_BOOT' must still be 'y' to be able to
boot from NAND.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The default configuration of the mini2440 in the current 2.6.37 kernel uses
a flash based BBT. So, the barebox for the mini2440 must also use one, to be
in sync with the kernel about bad blocks in the flash.
Due to the used OOB layout, the generic BBT description coming with the
framework can be used.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Without this modification saving a modified environment ends with:
mini2440:/ saveenv
saving environment
could not open /dev/env0: Read-only file system
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is required in order to enable booting from NAND, when there is no
other first level bootlader.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
If the SDRAM type will change in the future, only the 'config.h' must be
adapted to the new settings. The real size will be read back from this setting.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is required in order to enable booting from NAND and to avoid any visible
garbage on the screen until the pins are really set.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is required in order to enable booting from NAND and using the generic
S3C2440 setup routines.
Two types of SDRAM devices are known to be shipped by FriendlyARM. This config
should work on both of them. But it is really tested only for the HY57V561620
type.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is required in order to enable booting from NAND and using the generic
S3C2440 setup routines.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The S3C2440 provides 32 bit access to the NAND's data. Add specific read
routines to speed up data reading and writing.
These routines are stolen from the Linux kernel.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There are a few but important differences in S3C2410 and S3C2440. This patch
fixes them for the S3C2440 CPU.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The default configuration of the current 2.6.37 kernel uses a flash based BBT.
So, barebox must also use one, to be in sync with the kernel about bad blocks
in the flash.
Due to the used OOB layout, the generic BBT description coming with the
framework can be used.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There is no rule how to connect the SDRAMs to the two clocks signales the CPU
provides. Some boards are using them on a per bank base, some others on a per
chip base. So, the check for the enabled second clock cannot be used to detect
if the second SDRAM bank is populated.
A better way is to check the MT bits of the second SDRAM bank register. When
the init code sets these bits to '00' the second bank is not used for SDRAM
and gets ignored.
Signed-off-by: Juergen Beisert <juergen@kreuzholzen.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
At least partly. We have pads in barebox that we do
not have in the kernel. Also, this with this patch we
do not set the sion bit which the kernel does.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The semicolon is a delimiter, not an end marker. With a trailing semicolon the
kernel give the confusing message:
mtd: no mtd-id
With this patch, a semicolon gets added on demand only.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Without this patch (against next) I get this:
rsc@thebe:barebox$ make ARCH=arm CROSS_COMPILE=<path>/arm-v5te-linux-gnueabi- menuconfig
HOSTCC scripts/kconfig/lxdialog/checklist.o
HOSTCC scripts/kconfig/lxdialog/inputbox.o
HOSTCC scripts/kconfig/lxdialog/menubox.o
HOSTCC scripts/kconfig/lxdialog/textbox.o
HOSTCC scripts/kconfig/lxdialog/util.o
HOSTCC scripts/kconfig/lxdialog/yesno.o
HOSTCC scripts/kconfig/mconf.o
HOSTLD scripts/kconfig/mconf
scripts/kconfig/mconf Kconfig
warning: (ARCH_IMX25 && ARCH_IMX27 && ARCH_IMX35 && ARCH_IMX51 && ARCH_IMX28) selects ARCH_HAS_FEC_IMX which has unmet direct dependencies (ARCH_IMX)
warning: (ARCH_IMX25 && ARCH_IMX27 && ARCH_IMX35 && ARCH_IMX51 && ARCH_IMX28) selects ARCH_HAS_FEC_IMX which has unmet direct dependencies (ARCH_IMX)
Add the option for the FEC on MX28 as well.
Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch fixes the return values of the update script.
- Exit with an error of the "_update" script fails.
- Add a "else; true" to the crc check, otherwise the script
exits with "1".
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch fixes a regression introduced in commit
d15cfafeef.
While there, use "-z" to check if ubiroot variable is empty.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-By: Eric Bnard<eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this will all to simplify the sync with the kernel and later easly add the
self decompression support to barebox
as example with a lzo compression will reduce barebox from 180224 to 99863
bytes so 55.41%
-rwxr-xr-x 1 root root 99863 Jan 28 02:17 build/versatilepb/barebox.bin.lzo
we also reduce the binary size by 224 bytes
Old version
# ls -al build/versatilepb/barebox.bin
-rwxr-xr-x 1 root root 180468 Jan 28 02:14 build/versatilepb/barebox.bin
New version
# ls -al build/versatilepb/barebox*
-rwxr-xr-x 1 root root 180244 Jan 28 02:13 build/versatilepb/barebox.bin
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Eric Bénard
Sascha Hauer
Jean-Christophe PLAGNIOL-VILLARD
Juergen Beisert
Juergen Beisert
Robert Schwebel
Marc Kleine-Budde