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2016-03-11xtensa: define CONFIG_CPU_{BIG,LITTLE}_ENDIANMax Filippov1-0/+2
Query compiler for the CPU endianness and add corresponding definition to KBUILD_CPPFLAGS. This allows using 'native-endian' property in DTS. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-10-27xtensa: enable building of all dtbsRob Herring1-0/+4
Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs are not really dependent on a platform being enabled or any other kernel config, so for testing coverage it is convenient to build all of the dtbs. This builds all dts files in the tree, not just targets listed. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: linux-xtensa@linux-xtensa.org
2014-10-21xtensa: remove s6000 variant and s6105 platformDaniel Glöckner1-1/+0
The Stretch s6000 family support has been merged into mainline 5 years ago. There appear to be no users of this code since nobody complained that there is a merge error preventing compilation. Apart from the s6105 IP camera reference design there are no s6000 devices known to ever have run Linux and as the chips are out of production there probably never will be. The successor s7000 no longer uses an Xtensa core for the OS. Let's remove the code until someone is found who actually needs it. Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-08-14xtensa: simplify addition of new core variantsMax Filippov1-5/+2
Instead of adding new Kconfig options and Makefile rules for each new core variant provide XTENSA_VARIANT_CUSTOM variant and record variant name in the XTENSA_VARIANT_NAME variable. Adding new core variant now means providing directory structure under arch/xtensa/variant and specifying correct name in kernel configuration. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2013-09-06xtensa: don't use echo -e needlesslyMax Filippov1-2/+2
-e is not needed to output strings without escape sequences. This breaks big endian FSF build when the shell is dash, because its builtin echo doesn't understand '-e' switch and outputs it in the echoed string. Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2013-02-23xtensa: add support for oprofiledann1-0/+1
Support call graph profiling. Keep upper two bits of PC unchanged through backtrace rather than take them from sp (a1). The stack pointer is usually in the same GB (same upper 2 bits) as PC, but technically doesn't always have to be (and might not in the future, when taking full advantage of MMU v3). Signed-off-by: Dan Nicolaescu <dann@xtensa-linux.org> Signed-off-by: Pete Delaney <piet@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2013-02-23xtensa: Add config files for Diamond 233L - Rev C processor variantPete Delaney1-0/+1
The Diamond 233L processor is a pre-configured Xtensa processor tailored for Linux application. Signed-off-by: Pete Delaney <piet@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2013-02-23xtensa: use new common dtc ruleStephen Warren1-2/+2
The current rules have the .dtb files build in a different directory from the .dts files. This patch changes xtensa to use the generic dtb rule which builds .dtb files in the same directory as the source .dts. This requires moving parts of arch/xtensa/boot/Makefile into newly created arch/xtensa/boot/dts/Makefile, and updating arch/xtensa/Makefile to call the new Makefile. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: don't try to build DTB when OF is disabledMax Filippov1-1/+1
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: clean up files to make them code-style compliantChris Zankel1-1/+0
Remove heading and trailing spaces, trim trailing lines, and wrap lines that are longer than 80 characters. Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: provide endianness macro for sparseMax Filippov1-0/+7
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: add support for the XTFPGA boardsMax Filippov1-0/+1
The Avnet LX60/LX110/LX200 board is an FPGA board that can be configured with an Xtensa processor and an OpenCores Ethernet device. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: add device trees supportMax Filippov1-0/+7
Device trees allow specification of hardware topology and device parameters at runtime instead of hard-coding them in platform setup code. This allows running single binary kernel on a range of compatible boards. New boot parameters tag BP_TAG_FDT is allocated and a pointer to flat device tree is passed in it. Note that current interrupt mapping scheme uses single cell for interrupt identification. That means that IRQ numbers used in DTS must be CPU internal IRQ numbers, not external. It is possible to extend interrupt identification to two cells, and use second cell to tell external IRQ numbers form internal. That would allow to use single DTS on multiple boards with different mapping of external IRQ numbers. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18xtensa: add config option to disable linker relaxationChris Zankel1-0/+4
The default linker behavior is to optimize identical literal values and remove unnecessary overhead from assembler-generated "longcall" sequences to reduce code size. Provide an option to disable this behavior to improve compile time. Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-04xtensa: Setup CROSS_COMPILE at the topGeert Uytterhoeven1-12/+12
CROSS_COMPILE must be setup before using e.g. cc-option (and a few other as-*, cc-*, ld-* macros), else they will check against the wrong compiler when cross-compiling, and may invoke the cross compiler with wrong or suboptimal compiler options. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03xtensa: drop CONFIG_EMBEDDED_RAMDISKMax Filippov1-7/+1
Remove Kconfig entries, boot subdirectory, dependencies from other boot-* Makefiles, and sections from ld scripts. Remove stale redboot code that used to pass initrd addresses in a3 and a4 to _start. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03xtensa: fix CODA buildMax Filippov1-1/+1
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2012-06-20xtensa: use "test -e" instead of bashism "test -a"Geert Uytterhoeven1-2/+2
On Ubuntu, /bin/sh is a symlink to dash, which does not support "test -a". This causes messages like test: 1: -a: unexpected operator test: 1: -a: unexpected operator and link failures like (.init.text+0x132): undefined reference to `platform_init' due to the appropriate platform code not being compiled. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-02xtensa: Add -mforce-no-pic option is supportedChris Zankel1-0/+2
GCC is configured to always compile with PIC enabled for the Xtensa architecture. This fails when nfsroot is enabled as the code uses a non-conformant segment that mismatches in permissione with a read-only segment. A patch has been submitted to GCC to add the machine-option 'force-no-pic' that disables PIC. Signed-off-by: Chris Zankel <chris@zankel.net>
2009-04-03xtensa: only build platform or variant if they contain a MakefileChris Zankel1-8/+8
We only add the platform or variant directory to core-y if it contains a Makefile. Consequently, we can remove the Makefiles for the dc232b and fsf processor variants. Signed-off-by: Chris Zankel <chris@zankel.net>
2009-04-02xtensa: platform: s6105Johannes Weiner1-0/+1
Support for the S6105 IP Camera Reference Design Kit. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2009-04-02xtensa: s6000 variantJohannes Weiner1-0/+1
Support for the Stretch S6000 Xtensa core variant. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2009-04-02xtensa: variant-specific codeJohannes Weiner1-0/+3
Allow the variant to provide real code. Add empty dummy Makefiles for the existing variants. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
2008-11-06xtensa: move headers files to arch/xtensa/includeChris Zankel1-19/+9
Move all header files for xtensa to arch/xtensa/include and platform and variant header files to the appropriate arch/xtensa/platforms/ and arch/xtensa/variants/ directories. Moving the files gets also rid of all uses of symlinks in the Makefile. This has been completed already for the majority of the architectures and xtensa is one out of six missing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
2008-10-21xtensa: Add config files for Diamond 232L - Rev B processor variantChris Zankel1-0/+1
The Diamond 232L processor is a pre-configured Xtensa processor tailored for Linux application. Signed-off-by: Chris Zankel <chris@zankel.net>
2008-02-13[XTENSA] Concentrate platforms into one platforms directory.Chris Zankel1-1/+1
Create arch/xtensa/platforms/ directory to concentrate all platforms under that subdirectory and moves the ISS platform to that directory. Signed-off-by: Chris Zankel <chris@zankel.net>
2007-10-14kbuild: enable 'make CFLAGS=...' to add additional options to CCSam Ravnborg1-5/+3
The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-08-27[XTENSA] Add freestanding option to CFLAGSChris Zankel1-1/+6
We also need to set the freestanding option for GCC in the CFLAGS. Signed-off-by: Chris Zankel <chris@zankel.net>
2006-12-10[PATCH] xtensa: remove extra header filesChris Zankel1-14/+11
The Xtensa port contained many header files that were never needed. This rather lengthy patch removes all those files. Unfortunately, there were many dependencies that needed to be updated, so this patch touches quite a few source files. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-09kconfig: integrate split config into silentoldconfigRoman Zippel1-1/+1
Now that kconfig can load multiple configurations, it becomes simple to integrate the split config step, by simply comparing the new .config file with the old auto.conf (and then saving the new auto.conf). A nice side effect is that this saves a bit of disk space and cache, as no data needs to be read from or saved into the splitted config files anymore (e.g. include/config is now 648KB instead of 5.2MB). Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-11kbuild: rename prepare to archprepare to fix dependency chainSam Ravnborg1-1/+1
When introducing the generic asm-offsets.h support the dependency chain for the prepare targets was changed. All build scripts expecting include/asm/asm-offsets.h to be made when using the prepare target would broke. With the limited number of prepare targets left in arch Makefiles the trivial solution was to introduce a new arch specific target: archprepare The dependency chain looks like this now: prepare | +--> prepare0 | +--> archprepare | +--> scripts_basic +--> prepare1 | +---> prepare2 | +--> prepare3 So prepare 3 is processed before prepare2 etc. This guaantees that the asm symlink, version.h, scripts_basic are all updated before archprepare is processed. prepare0 which build the asm-offsets.h file will need the actions performed by archprepare. The head target is now named prepare, because users scripts will most likely use that target, but prepare-all has been kept for compatibility. Updated Documentation/kbuild/makefiles.txt. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-09kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h supportSam Ravnborg1-8/+2
Delete obsoleted parts form arch makefiles and rename to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-06-30[PATCH] xtensa: Removed local copy of zlib and fixed O= supportChris Zankel1-23/+25
Removed an unnecessary local copy of zlib (sorry for the add'l traffic). Fixed 'O=' support (thanks to Jan Dittmer for pointing it out). Some minor clean-ups in the make files. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-24[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 1Chris Zankel1-0/+102
The attached patches provides part 1 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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