Commit graph

63 commits

Author SHA1 Message Date
Albert ARIBAUD
41623c91b0 arm: move exception handling out of start.S files
Exception handling is basically identical for all ARM targets.
Factorize it out of the various start.S files and into a
single vectors.S file, and adjust linker scripts accordingly.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2014-05-15 16:24:53 +02:00
Albert ARIBAUD
60a4f39fcd arm: remove unused _end_vect and _vectors_end symbols
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2014-05-15 16:24:47 +02:00
Albert ARIBAUD
b60eff31f3 arm: remove unneeded symbol offsets and _TEXT_BASE
Remove the last uses of symbol offsets in ARM U-Boot.
Remove some needless uses of _TEXT_BASE.
Remove all _TEXT_BASE definitions.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2014-02-26 21:18:12 +01:00
Stephen Warren
3cd534e455 ARM: bcm2835: config.mk isn't needed
The entries in config.mk were needed so that U-Boot could be built
with an old version of the Raspberry Pi Foundation's toolchain. Without
them, the build would error out with:

...-ld: error: .../libgcc.a(_bswapsi2.o) uses VFP register arguments,
u-boot does not

However, none of the 3 toolchains in the latest version of their
tools.git, nor the Ubuntu/Linaro ARM compilers in at least Ubuntu Quantal
or Saucy, need these options set in order to compile a working U-Boot.
Hence, remove the options for simplicity.

Reported-by: Tom Rini <trini@ti.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
2014-02-13 15:06:02 +01:00
Masahiro Yamada
bf1af3d872 ARM: merge commonly-defined PLATFORM_RELFLAGS
Before this commit, all arch/arm/cpu/${CPU}/config.mk except ARMv8
had the same option:
$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))

This commit moves it into arch/arm/config.mk.

If the compiler does not support the option,
it is ignored by $(call cc-option,...).
So this commit gives no harm to ARMv8.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-01-24 16:59:08 -05:00
Darwin Rambo
de351d6be6 lib: time: add weak timer_init() function
If timer_init() is made a weak stub function, then it allows us to
remove several empty timer_init functions for those boards that
already have a timer initialized when u-boot starts. Architectures
that use the timer framework may also remove the need for timer.c.

Signed-off-by: Darwin Rambo <drambo@broadcom.com>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
2014-01-24 16:59:06 -05:00
Stephen Warren
004c10598b ARM: bcm2835: fix mailbox timeout
My original intention was to have a 100ms timeout. However, the timer
operations used return values in ms not us, so we ended up with a 100s
timeout instead. Fixing this exposes that some operations need longer
to operate than 100ms, so bump the timeout up to a whole second.

Reported-by: Andre Heider <a.heider@gmail.com>
Reviewed-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2014-01-20 17:11:39 -05:00
Masahiro Yamada
fa8f95084d ARM: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-31 12:53:39 -04:00
Masahiro Yamada
3102274d8b ARM: refactor compiler options in config.mk
Every ARM cpu config.mk (arch/arm/cpu/{CPUDIR}/config.mk) defines:

PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float

So, this patch moves the common compiler options to arch/arm/config.mk.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-09-23 17:03:05 +02:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Albert ARIBAUD
3da0e5750b arm: factorize relocate_code routine
Replace all relocate_code routines from ARM start.S files
with a single instance in file arch/arm/lib/relocate.S.
For PXA, this requires moving the dcache unlocking code
from within relocate_code into c_runtime_cpu_setup.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Tested-by: Simon Glass <sjg@chromium.org>
2013-05-30 20:24:38 +02:00
Albert ARIBAUD
fa6c7413d1 arm: do not compile relocate_code() for SPL builds
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Tested-by: Simon Glass <sjg@chromium.org>
2013-05-30 20:24:07 +02:00
Tetsuyuki Kobayashi
4411b2aea7 BUGFIX: arm: data abort in get_bad_stack_swi
When swi instruction is executed, it is expected to get message
"software interrupt" in console and dump registers and reboot, as
do_software_interrupt() in arch/arm/lib/interrupts.c.
But, actually it causes data abort accessing wrong address in get_bad_stack_swi
macro in arch/arm/cpu/v7/start.S.
This patch fixes this problem.

The same mistake in arch/arm/cpu/{arm1136,arm1176,pxa}/start.S.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2013-04-13 11:12:46 +02:00
Benoît Thébaudeau
9ce8e2386c arm1176: Remove unused MMU setup from start.S
Following the removal of the smdk6400 board, the MMU setup code in
arm1176/start.S becomes unused, so remove it. It will still be possible to
restore it later from the Git history if necessary, in which case it should be
moved out of the relocate_code() function.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:09 +02:00
Benoît Thébaudeau
66f30bf983 arm: Remove deprecated and now unused NAND SPL
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:08 +02:00
Benoît Thébaudeau
e53232250b arm: Remove support for unused s3c64xx
Following the removal of the smdk6400 board, the s3c64xx SoC becomes unused, so
remove associated code. It will still be possible to restore it later from the
Git history if necessary.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:08 +02:00
Benoît Thébaudeau
5c6db120fc arm: Remove unused relocate_code() parameters
Commit e05e5de7fa made the 2 1st parameters of
ARM's relocate_code() useless since it moved the code handling them to crt0.S.
So, drop these parameters.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:07 +02:00
Benoît Thébaudeau
7086e91b0e arm: relocate_code(): Use __image_copy_end for end of relocation
Use __image_copy_end instead of __bss_start for the end of the image to
relocate. This is the same as commit 033ca72, but applied to all ARM start.S.

This is a more appropriate symbol naming for an image copy & relocate feature,
and this also saves a useless copy of data put between __image_copy_end and
__bss_start in linker scripts (e.g. relocation information, or MMU
initialization tables used only before jumping to the relocated image).

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:05 +02:00
Benoît Thébaudeau
4b3db1cd31 arm: relocate_code(): Remove useless relocation offset computation
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:05 +02:00
Benoît Thébaudeau
959eaa74b8 arm: relocate_code() is no longer noreturn
Commit e05e5de7fa made ARM's relocate_code()
return to its caller, but it did not update its declaration accordingly.

Fixing this function declaration fixes dropped C code following calls to
relocate_code().

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12 07:55:05 +02:00
Benoît Thébaudeau
508611bcb7 arm: start.S: Fix _TEXT_BASE for SPL
_TEXT_BASE must be set to CONFIG_SPL_TEXT_BASE for generic SPL, and to
CONFIG_SYS_TEXT_BASE for non-SPL builds.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Reviewed-by: Tom Rini <trini@ti.com>
2013-04-12 07:55:05 +02:00
Stephen Warren
5eaa215607 ARM: bcm2835: fix get_timer() to return ms
Apparently, CONFIG_SYS_HZ must be 1000. Change this, and fix the timer
driver to conform to this.

Have the timer implementation export a custom API get_timer_us() for use
by the BCM2835 MMC API, which needs us resolution for a HW workaround.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-04-04 08:14:54 +02:00
Stephen Warren
88077280c4 ARM: bcm2835: add mailbox driver
The BCM2835 SoC contains (at least) two CPUs; the VideoCore (a/k/a "GPU")
and the ARM CPU. The ARM CPU is often thought of as the main CPU.
However, the VideoCore actually controls the initial SoC boot, and hides
much of the hardware behind a protocol. This protocol is transported
using the SoC's mailbox hardware module.

Here, we add a very simplistic driver for the mailbox module, and define
a few structures for the property messages.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-03-20 15:29:20 +01:00
Simon Glass
3929fb0a14 Replace __bss_end__ with __bss_end
Note this is a tree-wide change affecting multiple architectures.

At present we use __bss_start, but mostly __bss_end__. This seems
inconsistent and in a number of places __bss_end is used instead.

Change to use __bss_end for the BSS end symbol throughout U-Boot. This
makes it possible to use the asm-generic/sections.h file on all
archs.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-15 16:13:54 -04:00
Albert ARIBAUD
e05e5de7fa arm: move C runtime setup code in crt0.S
Move all the C runtime setup code from every start.S
in arch/arm into arch/arm/lib/crt0.S. This covers
the code sequence from setting up the initial stack
to calling into board_init_r().

Also, rewrite the C runtime setup and make functions
board_init_*() and relocate_code() behave according to
normal C semantics (no jumping across the C stack any
more, etc).

Some SPL targets had to be touched because they use
start.S explicitly or for some reason; the relevant
maintainers and custodians are cc:ed.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2013-01-08 22:14:50 +01:00
Ashok Kumar Reddy
4debcc2c22 ARM: arm1176: Define arch_cpu_init() for s3c64xx
arch_cpu_init() is removed from cpu level to SOC level for arm1176
in commit 4ea6d6b,the same is done for s3c64xx

Signed-off-by: Ashok Kumar Reddy <ashokkourla2000@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-11-15 21:08:19 +09:00
Kim Phillips
eef1cf2d5c include/linux/byteorder: import latest endian definitions from linux
u-boot's byteorder headers did not contain endianness attributions
for use with sparse, causing a lot of false positives.  Import the
kernel's latest definitions, and enable them by including compiler.h
and types.h.  They come with 'const' added for some swab functions, so
fix those up, too:

include/linux/byteorder/big_endian.h:46:2: warning: passing argument 1 of '__swab64p' discards 'const' qualifier from pointer target type [enabled by default]

Also, note: u-boot's historic __BYTE_ORDER definition has been
preserved (for the time being at least).

We also remove ad-hoc barrier() definitions, since we're including
compiler.h in files that hadn't in the past:

macb.c:54:0: warning: "barrier" redefined [enabled by default]

In addition, including compiler.h in byteorder changes the 'noinline'
definition to expand to __attribute__((noinline)).  This fixes
arch/powerpc/lib/bootm.c:

bootm.c:329:16: error: attribute '__attribute__': unknown attribute
bootm.c:329:16: error: expected ')' before '__attribute__'
bootm.c:329:25: error: expected identifier or '(' before ')' token

powerpc sparse builds yield:

include/common.h:356:22: error: marked inline, but without a definition

the unknown-reason inlining without a definition is considered obsolete
given it was part of the 2002 initial commit, and no arm version was
'fixed.'

also fixed:
ydirectenv.h:60:0: warning: "inline" redefined [enabled by default]

and:

Configuring for devconcenter - Board: intip, Options: DEVCONCENTER
make[1]: *** [4xx_ibm_ddr2_autocalib.o] Error 1
make: *** [arch/powerpc/cpu/ppc4xx/libppc4xx.o] Error 2
powerpc-fsl-linux-size: './u-boot': No such file
4xx_ibm_ddr2_autocalib.c: In function 'DQS_autocalibration':
include/asm/ppc4xx-sdram.h:1407:13: sorry, unimplemented: inlining failed in call to 'ppc4xx_ibm_ddr2_register_dump': function body not available
4xx_ibm_ddr2_autocalib.c:1243:32: sorry, unimplemented: called from here

and:

In file included from crc32.c:50:0:
crc32table.h:4:1: warning: implicit declaration of function '___constant_swab32' [-Wimplicit-function-declaration]
crc32table.h:4:1: error: initializer element is not constant
crc32table.h:4:1: error: (near initialization for 'crc32table_le[0]')

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
[trini: Remove '#endif' in include/common.h around setenv portion]
Signed-off-by: Tom Rini <trini@ti.com>
2012-11-04 11:00:34 -07:00
Marek Vasut
d731282e7c dm: wdt: arm: Move tnetv107x into drivers/watchdog/
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Oliver Brown <obrown@adventnetworks.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: U-Boot DM <u-boot-dm@lists.denx.de>
2012-10-18 06:52:02 +02:00
Zhong Hongbo
76abfa5781 arm: Fixed the offset for the no relocation.
When the u-boot address of destination equal to  __start,
no relocation. relocation offset(r9) = 0.

Signed-off-by: Zhong Hongbo <bocui107@gmail.com>
Tested-by: Stefano Babic <sbabic@denx.de>
2012-10-04 16:41:15 +02:00
Stephen Warren
59d63f7d2c ARM: arm1176: Define arch_cpu_init() at the SoC level
Commit 86c6326 "ARM: arm1176: enable instruction cache in
arch_cpu_init()" defined arch_cpu_init() in a file that is shared across
all arm1176 SoCs. tnetv107x already implemented this function, which
caused linking to break. Move the new conflicting arch_cpu_init() into
arm1176/bcm2835/init.c so that it doesn't conflict; grep indicates this
function is usually defined at the SoC-level, not the CPU-level, at least
for ARM.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Marek Vasut <marex@denx.de>
2012-09-25 13:27:58 -07:00
Stephen Warren
efad6cf881 ARM: add basic support for the Broadcom BCM2835 SoC
This SoC is used in the Raspberry Pi, for example.

For more details, see:
http://www.broadcom.com/products/BCM2835
http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf.

Initial support is enough to boot to a serial console, execute a minimal
set of U-Boot commands, download data over a serial port, and boot a
Linux kernel. No storage or network drivers are implemented.

GPIO driver originally by Vikram Narayanan <vikram186@gmail.com>
with many fixes from myself.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2012-09-01 14:58:21 +02:00
Stephen Warren
86c632651d ARM: arm1176: enable instruction cache in arch_cpu_init()
Note that this affects all users of the ARM1176 CPU that enable
CONFIG_ARCH_CPU_INIT, not just the BCM2835 SoC, potentially such as
tnetv107x.

Cc: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2012-09-01 14:58:20 +02:00
Zhong Hongbo
448217d4b2 arm: Fix to mistake clean the memory space
In currently, when __bss_start is equal to __bss_end__,
The bss loop will clear all the things in memory space.

But just only when __bss_end__ greater than __bss_start__,
we do the clear bss section operation.

Signed-off-by: Zhong Hongbo <bocui107@gmail.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2012-07-20 14:24:08 +02:00
Simon Glass
4a0764858b arm: Use common .lds file where possible
Each cpu directory currently has its own .lds file. This is only needed
in most cases because the start.o file is in a different subdir.

Now that we can factor out this difference, we can move most cpus over
to the common .lds file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2012-03-30 07:43:47 +02:00
Wolfgang Denk
cca4e4aec1 Reduce build times
U-Boot Makefiles contain a number of tests for compiler features etc.
which so far are executed again and again.  On some architectures
(especially ARM) this results in a large number of calls to gcc.

This patch makes sure to run such tests only once, thus largely
reducing the number of "execve" system calls.

Example: number of "execve" system calls for building the "P2020DS"
(Power Architecture) and "qong" (ARM) boards, measured as:
	-> strace -f -e trace=execve -o /tmp/foo ./MAKEALL <board>
	-> grep execve /tmp/foo | wc -l

	Before: After:	Reduction:
==================================
P2020DS 20555	15205	-26%
qong	31692	14490	-54%

As a result, built times are significantly reduced, typically by
30...50%.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Albert Aribaud <albert.aribaud@free.fr>
cc: Graeme Russ <graeme.russ@gmail.com>
cc: Mike Frysinger <vapier@gentoo.org>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Matthias Weisser <weisserm@arcor.de>
Tested-by: Sanjeev Premi <premi@ti.com>
Tested-by: Simon Glass <sjg@chromium.org>
Tested-by: Macpaul Lin <macpaul@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-11-03 20:44:58 +01:00
Jason Kridner
2d3be7c456 led: remove camel casing of led identifiers globally
Result of running the following command to address Wolfgang's
comment about camel case:

for file in `find . | grep '\.[chS]$'`; do perl -i -pe
's/(green|yellow|red|blue)_LED_(on|off)/$1_led_$2/g' $file; done

Discussion:
http://patchwork.ozlabs.org/patch/84988/

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-13 08:30:52 +02:00
Graeme Russ
17659d7de9 Timer: Remove reset_timer_masked()
In some circumstances, reset_timer_masked() was called be timer_init() in
order to perform architecture specific timer initialisation. In such
cases, the required code in reset_timer_masked() has been moved into
timer_init()
2011-07-26 14:54:15 +02:00
Graeme Russ
4769be21cc Timer: Remove reset_timer() for non-Nios2 arches 2011-07-26 14:53:30 +02:00
Graeme Russ
5c8404aff1 Timer: Remove set_timer completely 2011-07-26 14:52:17 +02:00
Aneesh V
401bb30b6d replace CONFIG_PRELOADER with CONFIG_SPL_BUILD
replace all occurences of CONFIG_PRELOADER with CONFIG_SPL_BUILD

Signed-off-by: Aneesh V <aneesh@ti.com>
2011-07-26 14:44:34 +02:00
seedshope
9a3a49fb00 SMDK6400: Disable LED function in start.s on the nand booting
Since nand boot have some limit for the first 4KB, We only
disable the LED function to reduce the code space. At the
same time, Fix the compile error for LED function undefined
in the compile time of nand_spl.

Signed-off-by: Zhong Hongbo <bocui107@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2011-03-27 19:19:21 +02:00
Po-Yu Chuang
f326cbba98 arm: fix incorrect monitor protection region in FLASH
Monitor protection region in FLASH did not cover .rel.dyn
and .dynsym sections, because it uses __bss_start to compute
monitor_flash_len. Use _end instead.

Add _end to linker scripts for end of u-boot image
Add _end_ofs to all the start.S.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
2011-03-27 19:18:52 +02:00
Po-Yu Chuang
44c6e6591c rename _end to __bss_end__
Currently, _end is used for end of BSS section.  We want _end to mean
end of u-boot image, so we rename _end to __bss_end__ first.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
2011-03-27 19:18:37 +02:00
Liu Hui-R64343
386ad72637 ARM: */start.S: code cleanup
Remove the useless code from start.S

Signed-off-by: Jason Liu <r64343@freescale.com>
Tested-by: Andreas Bießmann <andreas.devel@googlemail.com>
2011-02-02 00:54:44 +01:00
Wolfgang Denk
3600945b5a ARM: */start.S: use canonical asm syntax
Make code build with older tool chains.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-12-13 23:58:50 +01:00
Andreas Bießmann
1f52d89f2b arm: fixloop(): do not use r8 for relocation
r8 is used for global_data and should therefore be left alone!

For C code the compiler flag --fixed-r8 does the job, but in assembler
we need to be aware of that fact.

Signed-off-by: Andreas Biemann <andreas.devel@googlemail.com>
2010-12-09 11:01:15 +01:00
Andreas Bießmann
a1a47d3c57 arm: relocate_code(): do not set register useless
In case we are still at relocation target address before relocation we
do not need to load the registers needed for relocation. We should
instead skip the whole relocation part and jump over to clear_bss
immediately.

Signed-off-by: Andreas Biemann <andreas.devel@googlemail.com>
2010-12-09 11:01:15 +01:00
Andreas Bießmann
a78fb68f71 arm: copy_loop(): use scratch register
This patch uses r1 as scratch register for copy_loop(). Therefore we do
not longer need r7 for the storage of relocate_code()'s 'addr_moni' (the
destination address of relocation).
Therefore r7 can be used later on for other purposes.

Signed-off-by: Andreas Biemann <andreas.devel@googlemail.com>
2010-12-09 11:01:14 +01:00
Heiko Schocher
296cae732b arm: add 8-byte alignment for ABI compliance before board_init_f
suggested from Daniel Hobi<daniel.hobi@schmid-telecom.ch>

Tested on following boards:
arm1136: qong
armv7: omap3_beagle
arm926ejs: magnesium, tx25

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Daniel Hobi <daniel.hobi@schmid-telecom.ch>
cc: Albert ARIBAUD <albert.aribaud@free.fr>
2010-12-08 23:50:09 +01:00
Albert Aribaud
e42a7dff09 arm1176: bugfix: fix start.S for ELF relocation
The start.S file was only half-rewritten for ELF relocations.
This bugfix completes the rewrite.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
2010-11-26 21:22:43 +01:00