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path: root/arch/arm/cpu/arm720t/start.S
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2014-05-15arm: move exception handling out of start.S filesAlbert ARIBAUD
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>
2014-02-26arm: remove unneeded symbol offsets and _TEXT_BASEAlbert ARIBAUD
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>
2013-10-14Coding Style cleanup: remove trailing white spaceWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-05-30arm: factorize relocate_code routineAlbert ARIBAUD
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>
2013-05-30arm: do not compile relocate_code() for SPL buildsAlbert ARIBAUD
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>
2013-05-28tegra: Define CONFIG_SKIP_LOWLEVEL_INIT for SPL buildAxel Lin
Then we can get rid of the #ifdef CONFIG_TEGRA guard in cpu_init_crit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2013-05-28ARM: arm720t: Add missing CONFIG_SKIP_LOWLEVEL_INIT guard for cpu_init_critAxel Lin
cpu_init_crit() can be skipped, but the code is still enabled requiring a platform to supply lowlevel_init(). Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2013-04-12arm: Remove unused relocate_code() parametersBenoît Thébaudeau
Commit e05e5de7fae5bec79617e113916dac6631251156 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>
2013-04-12arm: relocate_code(): Use __image_copy_end for end of relocationBenoît Thébaudeau
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>
2013-04-12arm: relocate_code(): Remove useless relocation offset computationBenoît Thébaudeau
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-04-12arm: relocate_code() is no longer noreturnBenoît Thébaudeau
Commit e05e5de7fae5bec79617e113916dac6631251156 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>
2013-04-12arm: start.S: Fix _TEXT_BASE for SPLBenoît Thébaudeau
_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>
2013-03-15Replace __bss_end__ with __bss_endSimon Glass
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>
2013-01-08arm: move C runtime setup code in crt0.SAlbert ARIBAUD
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>
2012-10-26arm720: Remove CONFIG_ARM7_REVDMarek Vasut
This is a dead code, remove it. Signed-off-by: Marek Vasut <marex@denx.de>
2012-10-26arm720: Further clean up the arm720t directoryMarek Vasut
Clean up away old macros and such, so the file doesn't start piling up cruft. Signed-off-by: Marek Vasut <marex@denx.de> clean
2012-10-26arm: Remove support for NETARMMarek Vasut
This stuff has been rotting in the tree for a while now. Remove it. Signed-off-by: Marek Vasut <marex@denx.de>
2012-10-26arm: Remove support for s3c4510Marek Vasut
This stuff has been rotting in the tree for a year now. Remove it. Signed-off-by: Marek Vasut <marex@denx.de>
2012-10-26arm: Remove support for lpc2292Marek Vasut
This stuff has been rotting in the tree for a year now. Remove it. Signed-off-by: Marek Vasut <marex@denx.de>
2012-09-01ARM: add tegra20 support to arm720tAllen Martin
Add support for tegra20 arm7 boot processor. This processor is used to power on the Cortex A9 and transfer control to it. In tegra this processor is an ARM7TDMI not an ARM720T, but since we don't use cache it was easier to just reuse the ARM720T code as the processors are otherwise identical except for cache and MMU. Signed-off-by: Allen Martin <amartin@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-09-01ARM: Fix arm720t SPL buildAllen Martin
Take a few SPL fixes from armv7 and apply them to arm720t: -Use dummy exception handlers for SPL build -Initialize relocation register r9 to 0 for the case of no relocation -ifdef out interrupt handler code Signed-off-by: Allen Martin <amartin@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-07-20arm: Fix to mistake clean the memory spaceZhong Hongbo
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>
2011-09-13led: remove camel casing of led identifiers globallyJason Kridner
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>
2011-09-07ARM: remove broken "impa7" board.Wolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Marius Gröger <mag@sysgo.de>
2011-09-07ARM: remove broken "ep7312" board.Wolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Marius Gröger <mag@sysgo.de>
2011-08-04Convert ISO-8859 files to UTF-8Albert ARIBAUD
There was a mix of UTF-8 and ISO-8859 files in the U-Boot source tree, which could cause issues with the patchwork review system. This commit converts all ISO-8859 files to UTF-8. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2011-07-28cleanup: Fix typos and misspellings in various files.Mike Williams
Recieve/Receive recieve/receive Interupt/Interrupt interupt/interrupt Addres/Address addres/address Signed-off-by: Mike Williams <mike@mikebwilliams.com>
2011-07-26replace CONFIG_PRELOADER with CONFIG_SPL_BUILDAneesh V
replace all occurences of CONFIG_PRELOADER with CONFIG_SPL_BUILD Signed-off-by: Aneesh V <aneesh@ti.com>
2011-03-27arm: fix incorrect monitor protection region in FLASHPo-Yu Chuang
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>
2011-03-27rename _end to __bss_end__Po-Yu Chuang
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>
2011-02-02ARM: */start.S: code cleanupLiu Hui-R64343
Remove the useless code from start.S Signed-off-by: Jason Liu <r64343@freescale.com> Tested-by: Andreas Bießmann <andreas.devel@googlemail.com>
2010-12-13ARM: */start.S: use canonical asm syntaxWolfgang Denk
Make code build with older tool chains. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-12-09arm: fixloop(): do not use r8 for relocationAndreas Bießmann
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 Bießmann <andreas.devel@googlemail.com>
2010-12-09arm: relocate_code(): do not set register uselessAndreas Bießmann
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 Bießmann <andreas.devel@googlemail.com>
2010-12-09arm: copy_loop(): use scratch registerAndreas Bießmann
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 Bießmann <andreas.devel@googlemail.com>
2010-12-08arm: add 8-byte alignment for ABI compliance before board_init_fHeiko Schocher
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>
2010-11-26arm: add ELF relocation support to rest of cpusAlbert Aribaud
bulk addition of ELF relocation support to ARM cpus arm946es, arm720t,arm920t, arm925t, arm_intcm, ixp, lh7a40x, s3c44b0, and sa1100. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
2010-10-29Drop support for CONFIG_SKIP_RELOCATE_UBOOTWolfgang Denk
For ARM systems, before ELF relocation was introduced, CONFIG_SKIP_RELOCATE_UBOOT coul be used to prevent *COPYING* the U-Boot image from whereever it was loaded to it's link address (CONFIG_SYS_TEXT_BASE). The name was badly chosen, as no relocation was performed at all, it was just a memcpy(). With ELF relocation, this does not work like that any more, and related boards need to be fixed anyway. So don't keep this relict any longer. Signed-off-by: Wolfgang Denk <wd@denx.de> Tested-by: Heiko Schocher <hs@denx.de> Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-10-29Drop support for CONFIG_SYS_ARM_WITHOUT_RELOCWolfgang Denk
When this define was introduced, the idea was to provide a soft migration path for ARM boards to get adapted to the new relocation support. However, other recent changes led to a different implementation (ELF relocation), where this no longer works. By now CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it actually hurts because it obfuscates the actual code by sprinkling it with lots of dead and non-working debris. So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC. Signed-off-by: Wolfgang Denk <wd@denx.de> Tested-by: Heiko Schocher <hs@denx.de> Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-10-26ARM: use the same branch insn on all architecturesWolfgang Denk
For the "fixloop" implementation in start.S a number of different instructions was used. Unify code so all architectures use "blo" here because it is more robust in case of incorrect alignments. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Albert ARIBAUD <albert.aribaud@free.fr> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Sandeep Paulraj <s-paulraj@ti.com> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Acked-by: Heiko Schocher <hs@denx.de>
2010-10-26Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated valueWolfgang Denk
CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not being able to use "sizeof(struct global_data)" in assembler files. Recent experience has shown that manual synchronization is not reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into GENERATED_GBL_DATA_SIZE which gets automatically generated by the asm-offsets tool. In the result, all definitions of this value can be deleted from the board config files. We have to make sure that all files that reference such data include the new <asm-offsets.h> file. No other changes have been done yet, but it is obvious that similar changes / simplifications can be done for other, related macro definitions as well. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-18Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk
The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-11arm: bugfix: replace ble with blo in start.S filesAlbert Aribaud
Generalized misuse of ble within relocation and bss initialization loops caused one iteration too many. Instead of ble ('branch if lower or equal'), use blo ('branch if lower'). While we're at it, fix all 'addreee' typos. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
2010-09-19ARM: implement relocation for arm720tHeiko Schocher
Change the implementation for arm720t to relocate the code to an arbitrary address in RAM. Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
2010-06-22ARM: Align stack to 8 bytesVitaly Kuzmichev
The ARM ABI requires that the stack be aligned to 8 bytes as it is noted in Procedure Call Standard for the ARM Architecture: http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042d/index.html Unaligned SP also causes the problem with variable-length arrays allocation when VLA address becomes less than stack pointer during aligning of this address, so the next 'push' in the stack overwrites first 4 bytes of VLA. Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-04-13arm: Move cpu/$CPU to arch/arm/cpu/$CPUPeter Tyser
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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