This is unused now and not needed. We have a board_init_lowlevel. If a
board needs some architecture setup it can always call it from its
board_init_lowlevel.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The current approach to get the offset between link and runtime address
is fragile. It requires a big fat comment to put no code above it and it
requires an extra linker section. Instead use a small assembler function.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This function returns the offset between the address barebox is linked at
and the address barebox is currently running at.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is needed by at91 to specify the size of the binary to load from the
bootrom when booting for non nor flash.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We need inline versions of armlinux_set* exactly when
CONFIG_ARM_LINUX is not set, because this is the symbol
used to compile the non inline versions.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
dma_alloc() allocates memory aligned to cache lines. We have to use
cache line aligned buffers if a driver calls dma_inv_range on the
buffer.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This shrinks the resulting binary size by ~25%. Exceptions
are still handled in arm mode, so we have to explicitely
put .arm directives into the exception code. Thumb-2 mode
has been tested on i.MX51 Babbage board.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We used to get the runtime offset of the board_init_lowlevel_return
by doing a &board_init_lowlevel_return. This does not work in thumb-2
mode, so use a separate linker section for this function instead.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Traditionally U-Boot and barebox have the exception vectors at
the start of the binary. There is no real reason in doing so,
because in the majority of cases this data will not be at 0x0
where it could be used as vectors directly anyway.
This patch puts the vectors into a separate linker section and
defines an head function which is placed at the start of the
image instead. Putting this in a separate function also has
the advantage that it can be placed at the start of images
which require an additional header like several Freescale i.MX
images. As the head function contains the barebox arm magic
those images can now also be detected as barebox images.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
At least ARM allows us to dump the stack, but we currently
have no prototype for this. Add a dump_stack prototype and
provide a static inline function for architectures without
stack dump support. Also, call dump_stack() in panic() to
provide more information in the case of a panic.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add a function to remap an IO range into a virtual addresses
range. This is particulary usefull for the few devices
mapped at physical address 0, as the MTD boot devices.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
whoever calls this function is not necessarily aware of a struct
image_data, so remove the dependency from the function.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
By doing this we can remove the ptes field in struct arm_memory
which won't be present in a generic memory bank structure anymore.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In barebox we used 1MiB sections to map our SDRAM cachable. This
has the drawback that we have to map our sdram twice: cached for
normal sdram and uncached for DMA operations. As address space gets
sparse on newer systems we are sometines unable to find a suitably
big enough area for the dma coherent space.
This patch changes the MMU code to use second level page tables.
With it we can implement dma_alloc_coherent as normal malloc, we
just have to remap the allocated area uncached afterwards and map
it cached again after free().
This makes arm_create_section(), setup_dma_coherent() and mmu_enable()
noops.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We want to use the memory banks later in the MMU which is
independent of Linux, so move this to a location which is
always compiled.
Also, make the memory bank list global and add an iterator
for it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this will avoid __bswapsi2 issue see with gcc 4.5.1
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
from linux kernel v2.6.37
This patch adds various C and assembler macros that help with using
the unified assembler syntax for compiling files to either ARM or
Thumb-2 modes.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The idea is to panic() when there is no memory available for normal
operation. Exception: code which can consume arbitrary amount of RAM
(example: files allocated in ramfs) must report error instead of panic().
This patch also fixes code which didn't check for NULL from malloc() etc.
Usage: malloc(), memalign() return NULL when out of RAM.
xmalloc(), xmemalign() always return non-NULL or panic().
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
tested with qemu only
qemu-system-arm -M versatilepb -monitor null -kernel barebox -net nic -net user -tftp "<uImage-path>/" -serial stdio
add -nographic if you do not want the lcd via sdl
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
update:
- use default env
- move arm_timer.h as in the kernel
- add nor flash support
- udpate defconfig
- fix copyright copy from linux
- fix ARCH_TEXT_BASE
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
as refer in this patch "arm & sh: factorised duplicated clkdev.c"
factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.
as the code is identical at 99% in linux
move it also as preparing for the SH adding
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
this will allow each arch to handle the boards more simply and depending on
there need
the env var BOARD will refer to the current board dirent
for sandbox as we have only one board the board dirent is arch/sandbox/board
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Revision info required for some boards at boot time.
Only adds if the system_rev has been set to non-zero.
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Lets translate the startup code to a language we all understand better.
Tested on pcm038 (arm v5) and pcm043 (arm v6).
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch updates the definitions of the __raw_read and __raw_write
functions so that "sparse" doesn't complain.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Move platform independent header files to arch/arm/include/asm, leaving
those in asm/arch* and asm/proc* alone.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Sascha Hauer
Jean-Christophe PLAGNIOL-VILLARD
Marc Kleine-Budde
Krzysztof Halasa
Robert Jarzmik
Alexey Zaytsev
Michael Grzeschik
Baruch Siach
Marc Reilly