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* arm: move exception handling out of start.S filesAlbert ARIBAUD2014-05-151-241/+1
| | | | | | | | 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>
* arm: remove unused _end_vect and _vectors_end symbolsAlbert ARIBAUD2014-05-151-2/+0
| | | | Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* arm1136: move cache code from start.S to cache.cAlbert ARIBAUD2014-05-151-10/+0
| | | | | | | arch/arm/cpu/arm1136/start.S contain a cache flushing function. Remove the function and move its code into arch/arm/lib/cache.c. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* arm: remove unneeded symbol offsets and _TEXT_BASEAlbert ARIBAUD2014-02-261-27/+0
| | | | | | | | 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>
* Coding Style cleanup: remove trailing white spaceWolfgang Denk2013-10-141-1/+1
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-241-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* arm: Remove OMAP2420H4 and all omap24xx supportTom Rini2013-06-101-18/+0
| | | | | | | | | The omap2420H4 was the only mainline omap24xx board. Prior to being fixed by Jon Hunter in time for v2013.04 it had been functionally broken for a very long time. Remove this board as there's not been interest in it in U-Boot for quite a long time. Signed-off-by: Tom Rini <trini@ti.com>
* arm: factorize relocate_code routineAlbert ARIBAUD2013-05-301-76/+0
| | | | | | | | | | | 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>
* arm: do not compile relocate_code() for SPL buildsAlbert ARIBAUD2013-05-301-8/+3
| | | | | | 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>
* BUGFIX: arm: data abort in get_bad_stack_swiTetsuyuki Kobayashi2013-04-131-1/+2
| | | | | | | | | | | | | 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>
* arm: Remove unused relocate_code() parametersBenoît Thébaudeau2013-04-121-4/+2
| | | | | | | | 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>
* arm: relocate_code(): Use __image_copy_end for end of relocationBenoît Thébaudeau2013-04-121-2/+2
| | | | | | | | | | | | 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>
* arm: relocate_code(): Remove useless relocation offset computationBenoît Thébaudeau2013-04-121-5/+3
| | | | Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
* arm1136: Remove redundant relocate_code() returnBenoît Thébaudeau2013-04-121-2/+0
| | | | Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
* arm: relocate_code() is no longer noreturnBenoît Thébaudeau2013-04-121-3/+1
| | | | | | | | | | 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>
* arm: start.S: Fix _TEXT_BASE for SPLBenoît Thébaudeau2013-04-121-0/+4
| | | | | | | | _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>
* Replace __bss_end__ with __bss_endSimon Glass2013-03-151-1/+1
| | | | | | | | | | | | | 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>
* arm: move C runtime setup code in crt0.SAlbert ARIBAUD2013-01-081-57/+14
| | | | | | | | | | | | | | | | | | 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>
* ARM: Fix start.S when used with SPL in arm1136Stefano Babic2012-10-261-11/+20
| | | | | | | | This patch modifies start.S for the arm1136 to make it conform to start.S in armv7 architecture, to make it usable if the SPL framework is used. Signed-off-by: Stefano Babic <sbabic@denx.de>
* arm: Fixed the offset for the no relocation.Zhong Hongbo2012-10-041-0/+1
| | | | | | | | 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>
* arm: Fix to mistake clean the memory spaceZhong Hongbo2012-07-201-3/+5
| | | | | | | | | | | 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>
* Convert ISO-8859 files to UTF-8Albert ARIBAUD2011-08-041-2/+2
| | | | | | | | 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>
* replace CONFIG_PRELOADER with CONFIG_SPL_BUILDAneesh V2011-07-261-10/+10
| | | | | | replace all occurences of CONFIG_PRELOADER with CONFIG_SPL_BUILD Signed-off-by: Aneesh V <aneesh@ti.com>
* armv7: rename cache related CONFIG flagsAneesh V2011-07-041-2/+2
| | | | | | | | | | | | | | | | Replace the cache related CONFIG flags with more meaningful names. Following are the changes: CONFIG_L2_OFF -> CONFIG_SYS_L2CACHE_OFF CONFIG_SYS_NO_ICACHE -> CONFIG_SYS_ICACHE_OFF CONFIG_SYS_NO_DCACHE -> CONFIG_SYS_DCACHE_OFF Signed-off-by: Aneesh V <aneesh@ti.com> V2: * Changed CONFIG_L2_OFF -> CONFIG_SYS_NO_L2CACHE V4: * Changed all three flags to the final names suggested as above and accordingly changed the commit message
* arm: fix incorrect monitor protection region in FLASHPo-Yu Chuang2011-03-271-0/+4
| | | | | | | | | | | 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>
* rename _end to __bss_end__Po-Yu Chuang2011-03-271-1/+1
| | | | | | | 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>
* arm1136 relocation: Fix calculation of board_init_rFabio Estevam2011-02-211-1/+1
| | | | Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
* arm1136: Fix NAND bootFabio Estevam2011-02-211-12/+4
| | | | | | Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com> Tested-by: Magnus Lilja <lilja.magnus@gmail.com>
* ARM: */start.S: code cleanupLiu Hui-R643432011-02-021-2/+0
| | | | | | | Remove the useless code from start.S Signed-off-by: Jason Liu <r64343@freescale.com> Tested-by: Andreas Bießmann <andreas.devel@googlemail.com>
* ARM: */start.S: use canonical asm syntaxWolfgang Denk2010-12-131-1/+1
| | | | | | Make code build with older tool chains. Signed-off-by: Wolfgang Denk <wd@denx.de>
* arm: fixloop(): do not use r8 for relocationAndreas Bießmann2010-12-091-3/+3
| | | | | | | | | 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>
* arm: relocate_code(): do not set register uselessAndreas Bießmann2010-12-091-2/+2
| | | | | | | | | 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>
* arm: copy_loop(): use scratch registerAndreas Bießmann2010-12-091-5/+5
| | | | | | | | | 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>
* arm: add 8-byte alignment for ABI compliance before board_init_fHeiko Schocher2010-12-081-0/+1
| | | | | | | | | | | | | 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>
* ARM: fix linker file for newer ld supportAlbert Aribaud2010-11-171-16/+0
| | | | | | | | | older ld emitted all ELF relocations in input sections named .rel.dyn, whereas newer ld uses names of the form .rel*. The linker script only collected .rel.dyn input sections. Rewrite to collect all .rel* input sections. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
* Drop support for CONFIG_SKIP_RELOCATE_UBOOTWolfgang Denk2010-10-291-4/+0
| | | | | | | | | | | | | | | | 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>
* Drop support for CONFIG_SYS_ARM_WITHOUT_RELOCWolfgang Denk2010-10-291-127/+0
| | | | | | | | | | | | | | | | 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>
* ARM: use the same branch insn on all architecturesWolfgang Denk2010-10-261-1/+1
| | | | | | | | | | | | | | | 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>
* ARM: fix address setup in start.SDarius Augulis2010-10-261-2/+4
| | | | | | | | Fix address setup bug for ARM. This bug stops u-boot booting if CONFIG_SKIP_RELOCATE_UBOOT is defined. Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
* Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated valueWolfgang Denk2010-10-261-4/+5
| | | | | | | | | | | | | | | | | | 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>
* ARM: Use consistent assembler syntaxGray Remlin2010-10-261-5/+5
| | | | | Signed-off-by: Gray Remlin <g_remlin@rocketmail.com> Acked-by: Heiko Schocher <hs@denx.de>
* Merge branch 'elf_reloc'Wolfgang Denk2010-10-191-75/+96
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: arch/arm/include/asm/config.h board/LaCie/edminiv2/config.mk board/karo/tx25/config.mk board/logicpd/imx27lite/config.mk doc/README.arm-relocation Signed-off-by: Wolfgang Denk <wd@denx.de>
| * arm1136, qong: add support for ELF relocationsHeiko Schocher2010-10-131-75/+96
| | | | | | | | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Heiko Schocher <hs@denx.de> cc: Albert ARIBAUD <albert.aribaud@free.fr>
* | Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk2010-10-181-1/+1
|/ | | | | | | | | | | | 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>
* arm: bugfix: replace ble with blo in start.S filesAlbert Aribaud2010-10-111-4/+4
| | | | | | | | | | | 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>
* ARM: implement relocation for ARM11Heiko Schocher2010-09-191-0/+201
| | | | | | | | | | | | Change the implementation for ARM11 to relocate the code to an arbitrary address in RAM. Tested on the qong board. Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
* ARM (ARM11): add data cache support, test on Qong boardHeiko Schocher2010-09-191-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Add data cache support for arm1136 systems. Enable "cache" command on Qong board and test performance. Test 1: Loading 127 MB of data from NAND flash into RAM: Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 177s 95s 43s = x 4.1 Test 2: uncompressing a gzipped image from RAM to RAM (size compressed: 6.5 MiB, uncompressed: 35 MiB): Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 1.54s 0.95s 0.18s = x 8.6 Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
* ARM: Align stack to 8 bytesVitaly Kuzmichev2010-06-221-0/+1
| | | | | | | | | | | | | 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>
* ARM1136: Fix cache_flush() error and correct cpu_init_crit() commentsGeorge G. Davis2010-06-011-2/+2
| | | | | | | | | | | | | | | The ARM1136 cache_flush() function uses the "mcr p15, 0, rn, c7, c7, 0" instruction which means "Invalidate Both Caches" when in fact the intent is to clean and invalidate all caches. So add an "mcr p15, 0, %0, c7, c10, 0" instruction to "Clean Entire Data Cache" prior to the "Invalidate Both Caches" instruction to insure that memory is consistent with any dirty cache lines. Also fix a couple of "flush v*" comments in ARM1136 cpu_init_crit() so that they correctly describe the actual ARM1136 CP15 C7 Cache Operations used. Signed-off-by: George G. Davis <gdavis@mvista.com>
* arm: Move cpu/$CPU to arch/arm/cpu/$CPUPeter Tyser2010-04-131-0/+443
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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