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* arm: copy_loop(): use scratch registerAndreas Bießmann2010-12-09-5/+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 Schocher2010-12-08-0/+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>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
* ARM: fix linker file for newer ld supportAlbert Aribaud2010-11-17-34/+20
| | | | | | | | | 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 Denk2010-10-29-4/+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 Denk2010-10-29-127/+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 Denk2010-10-26-1/+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 Augulis2010-10-26-2/+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 Denk2010-10-26-4/+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 Remlin2010-10-26-5/+5
| | | | | Signed-off-by: Gray Remlin <g_remlin@rocketmail.com> Acked-by: Heiko Schocher <hs@denx.de>
* MX31: Removed warnings for iomux functionStefano Babic2010-10-20-4/+3
| | | | | | Removed warnings generated in the mx31_set_pad() function. Signed-off-by: Stefano Babic <sbabic@denx.de>
* Merge branch 'elf_reloc'Wolfgang Denk2010-10-19-78/+108
|\ | | | | | | | | | | | | | | | | | | | | 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 Schocher2010-10-13-78/+108
| | | | | | | | | | | | 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 Denk2010-10-18-1/+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>
* | Merge branch 'master' of git://git.denx.de/u-boot-imxWolfgang Denk2010-10-17-0/+17
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| * MX31: add support for setting pin padsStefano Babic2010-10-13-0/+17
| | | | | | | | | | | | | | The patch adds a utility function and defines to set the pad as it is done in linux. Signed-off-by: Stefano Babic <sbabic@denx.de>
* | arm: bugfix: replace ble with blo in start.S filesAlbert Aribaud2010-10-11-4/+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 Schocher2010-09-19-1/+214
| | | | | | | | | | | | 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 Schocher2010-09-19-0/+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 Kuzmichev2010-06-22-0/+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. Davis2010-06-01-2/+3
| | | | | | | | | | | | | | | 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: */timer.c: fix spelling and vertical alignmentWolfgang Denk2010-05-21-12/+12
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* arm: Move cpu/$CPU to arch/arm/cpu/$CPUPeter Tyser2010-04-13-0/+1282
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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