For some time there have been repeated reports about build problems
with some ARM (cross) tool chains. Especially issues about
(in)compatibility with the tool chain provided runtime support
library libgcc.a caused to add and support a private implementation
of such runtime support code in U-Boot. A closer look at the code
indicated that some of these issues are actually home-made. This
patch attempts to clean up some of the most obvious problems and make
building of U-Boot with different tool chains easier:
- Even though all ARM systems basicy used the same compiler options
to select a specific ABI from the tool chain, the code for this was
distributed over all cpu/*/config.mk files. We move this one level
up into lib_arm/config.mk instead.
- So far, we only checked if "-mapcs-32" was supported by the tool
chain; if yes, this was used, if not, "-mabi=apcs-gnu" was
selected, no matter if the tool chain actually understood this
option. There was no support for EABI conformant tool chains.
This patch implements the following logic:
1) If the tool chain supports
"-mabi=aapcs-linux -mno-thumb-interwork"
we use these options (EABI conformant tool chain).
2) Otherwise, we check first if
"-mapcs-32"
is supported, and then check for
"-mabi=apcs-gnu"
If one test succeeds, we use the first found option.
3) In case 2), we also test if "-mno-thumb-interwork", and use
this if the test succeeds. [For "-mabi=aapcs-linux" we set
"-mno-thumb-interwork" mandatorily.]
This way we use a similar logic for the compile options as the
Linux kernel does.
- Some EABI conformant tool chains cause external references to
utility functions like raise(); such functions are provided in the
new file lib_arm/eabi_compat.c
Note that lib_arm/config.mk gets parsed several times, so we must
make sure to add eabi_compat.o only once to the linker list.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Dirk Behme <dirk.behme@googlemail.com>
Cc: Magnus Lilja <lilja.magnus@gmail.com>
Cc: Tom Rix <Tom.Rix@windriver.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Sergey Kubushyn <ksi@koi8.net>
Tested-by: Magnus Lilja <lilja.magnus@gmail.com>
Tested-by: Andrzej Wolski <awolski@poczta.fm>
Tested-by: Gaye Abdoulaye Walsimou <walsimou@walsimou.com>
Tested-by: Tom Rix <Tom.Rix@windriver.com>
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
For some reason the AT91rm9200 lowlevel init writes to a bunch of
reserved or read-only addresses. All the boards seem to define the
value-to-be-written values as zero ... but they shouldn't actually
be writing *anything* there.
No documented erratum justifies these accesses. It looks like maybe
some pre-release BDI-2000 setup code has been carried along by cargo
cult programming since at least late 2004 (per GIT history).
Here's a patch disabling what seems to be bogosity. Tested on a
csb337; there were no behavioral changes.
Signed-off-by: David Brownell <david-b@pacbell.net>
on RM9200ek
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
CSB337 boards originally shipped with MicroMonitor, not U-Boot;
and with a version using a different convention for recording
Ethernet addresses than anyone else. To avoid breaking Linux
when it uses U-Boot, have it use the same convention on that
hardware.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
all arm init the IRQ stack the same way
so unify it in lib_arm/interrupts.c and then call arch specific interrupt init
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
all arm boards except a few use the same cpu linker script
so move it to cpu/$(CPU)
that could be overwrite in following order
SOC
BOARD
via the corresponding config.mk
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
actually the timer init use the interrupt_init as init callback
which make the interrupt and timer implementation difficult to follow
so now rename it as int timer_init(void) and use interrupt_init for interrupt
btw also remane the corresponding file to the functionnality implemented
as ixp arch implement two timer - one based on interrupt - so all the timer
related code is moved to timer.c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
New default, weak i2c_get_bus_speed() and i2c_set_bus_speed() functions
replace a number of architecture-specific implementations.
Also, providing default functions will allow all boards to enable
CONFIG_I2C_CMD_TREE. This was previously not possible since the
tree-form of the i2c command provides the ability to display and modify
the i2c bus speed which requires i2c_[set|get]_bus_speed() to be
present.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
__attribute__ follows gcc's documented syntax and is generally more
common than __attribute. This change is only asthetic and should not
affect functionality.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Update the rm9200 reset sequence to try executing a board-specific reset
function and move specific board reset to board.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
introduce serial_exit for this purpose. Use it only when the rm9200
serial driver is active
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
The AT91RM9200-EK Evaluation Board supports the AT91RM9200
ARM9-based 32-bit RISC microcontroller and enables real-time code development
and evaluation.
Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507
with
- NOR (cfi driver)
- DataFlash
- USB OHCI
- Net
- I2C (hard)
Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
The environment is the canonical storage location of the mac address, so
we're killing off the global data location and moving everything to
querying the env directly.
The cpus that get converted here:
at91rm9200
mpc512x
mpc5xxx
mpc8260
mpc8xx
ppc4xx
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Ben Warren <biggerbadderben@gmail.com>
CC: John Rigby <jrigby@freescale.com>
CC: Stefan Roese <sr@denx.de>
Rather than forcing people to define a custom "LITTLEENDIAN", just use the
__LITTLE_ENDIAN one from the Linux byteorder headers that every arch is
already setting up.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
All implementations of the functions i2c_reg_read() and
i2c_reg_write() are identical. We can save space and simplify the
code by converting these functions into inlines and putting them in
i2c.h.
Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-By: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This warning is issued by modern ARM-EABI GCC on non-thumb targets.
Signed-off-by: Vladimir Panfilov <pvr@emcraft.com>
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
This patch fix the broken boot from NOR Flash on AT91RM9200 boards, if
CONFIG_AT91RM9200 is defined and nor preloader is used.
Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
At a lot of places in the code the PIPE_INTERRUPT flags and friends
are used wrong. The wrong bits are compared to this flag resulting
in wrong conditions. Also there are macros that should be used for
PIPE_* flags.
This patch tries to fix them all, however, I was not able to test the
changes, because I do not have any of these boards.
Review required!
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Markus Klotzbuecher <mk@denx.de>
This patch prevents linker error on AT91RM9200 boards, if
CONFIG_CMD_I2_TREE is set.
It implements i2c_set_bus_speed and i2c_get_bus_speed as a dummy function.
Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
This patch changes get_timer() for i.MX to return the time since
'base' instead of the time since the counter was at zero.
Symptom seen is flash timeout errors when erasing or programming a
sector using the common cfi flash code.
Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
1) Change the i.MX serial driver to use the baud rate set in the
u-boot environment
2) don't assume a 16MHz value for PERCLK1 in baud rate calculations
3) don't write a 1 to the RDR bit in the USR2 reg. (bit is not "write
one to clear" like other status bits in the reg.)
Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
Code in cpu/arm920t/start.S will die with a compilation error if
CONFIG_STACKSIZE + CFG_MALLOC_LEN works out to an invalid constant for
the ARM sub instruction. Change the code so that each is subtracted
independently to avoid the error.
Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
Remove duplicate definitions in include/lxt971a.h.
Remove duplicate registers and bits definitions in
include/lxt971a.h for standard MII registers, and
use values in include/miiphy.h instead.
Signed-off-by: Hugo Villeneuve <hugo.villeneuve@lyrtech.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).
Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.
Signed-off-by: Wolfgang Denk <wd@denx.de>
This patch fixes three typos.
The first is a repetition of CONFIG_CMD_BSP.
The second makes the #endif comment match its #if.
The third is a spelling error.
Signed-off-by: Adrian Filipi <adrian.filipi@eurotech.com>
Kumar Gala
Wolfgang Denk
David Brownell
Jean-Christophe PLAGNIOL-VILLARD
Peter Tyser
Detlev Zundel
Ulf Samuelsson
Mike Frysinger
Timur Tabi
Sergei Poselenov
Wolfgang Denk
Jens Scharsig
Remy Bohmer
Andrew Dyer
Scott Wood
Hugo Villeneuve
Adrian Filipi
Guennadi Liakhovetski