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2022-10-02kbuild: remove head-y syntaxMasahiro Yamada1-2/+0
Kbuild puts the objects listed in head-y at the head of vmlinux. Conventionally, we do this for head*.S, which contains the kernel entry point. A counter approach is to control the section order by the linker script. Actually, the code marked as __HEAD goes into the ".head.text" section, which is placed before the normal ".text" section. I do not know if both of them are needed. From the build system perspective, head-y is not mandatory. If you can achieve the proper code placement by the linker script only, it would be cleaner. I collected the current head-y objects into head-object-list.txt. It is a whitelist. My hope is it will be reduced in the long run. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-03-09xtensa: add kernel ABI selection to KconfigMax Filippov1-0/+4
Add choice to use default or call0 ABI for the kernel code. If call0 ABI is chosen add '-mabi=call0' to the flags. The toolchain support for this option is rather new so only enable it when the compiler supports it. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2022-03-09xtensa: don't link with libgccMax Filippov1-5/+1
libgcc may be absent or may have different ABI than the kernel. Don't link with it. Drop declarations and export for helpers that are not implemented. Use generic versions of DI mode multiplication and comparisons. Drop register window spilling helper as it should never be used by the compiler-generated code. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2022-01-08kbuild: do not quote string values in include/config/auto.confMasahiro Yamada1-1/+1
The previous commit fixed up all shell scripts to not include include/config/auto.conf. Now that include/config/auto.conf is only included by Makefiles, we can change it into a more Make-friendly form. Previously, Kconfig output string values enclosed with double-quotes (both in the .config and include/config/auto.conf): CONFIG_X="foo bar" Unlike shell, Make handles double-quotes (and single-quotes as well) verbatim. We must rip them off when used. There are some patterns: [1] $(patsubst "%",%,$(CONFIG_X)) [2] $(CONFIG_X:"%"=%) [3] $(subst ",,$(CONFIG_X)) [4] $(shell echo $(CONFIG_X)) These are not only ugly, but also fragile. [1] and [2] do not work if the value contains spaces, like CONFIG_X=" foo bar " [3] does not work correctly if the value contains double-quotes like CONFIG_X="foo\"bar" [4] seems to work better, but has a cost of forking a process. Anyway, quoted strings were always PITA for our Makefiles. This commit changes Kconfig to stop quoting in include/config/auto.conf. These are the string type symbols referenced in Makefiles or scripts: ACPI_CUSTOM_DSDT_FILE ARC_BUILTIN_DTB_NAME ARC_TUNE_MCPU BUILTIN_DTB_SOURCE CC_IMPLICIT_FALLTHROUGH CC_VERSION_TEXT CFG80211_EXTRA_REGDB_KEYDIR EXTRA_FIRMWARE EXTRA_FIRMWARE_DIR EXTRA_TARGETS H8300_BUILTIN_DTB INITRAMFS_SOURCE LOCALVERSION MODULE_SIG_HASH MODULE_SIG_KEY NDS32_BUILTIN_DTB NIOS2_DTB_SOURCE OPENRISC_BUILTIN_DTB SOC_CANAAN_K210_DTB_SOURCE SYSTEM_BLACKLIST_HASH_LIST SYSTEM_REVOCATION_KEYS SYSTEM_TRUSTED_KEYS TARGET_CPU UNUSED_KSYMS_WHITELIST XILINX_MICROBLAZE0_FAMILY XILINX_MICROBLAZE0_HW_VER XTENSA_VARIANT_NAME I checked them one by one, and fixed up the code where necessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-10-24kbuild: use more subdir- for visiting subdirectories while cleaningMasahiro Yamada1-3/+1
Documentation/kbuild/makefiles.rst suggests to use "archclean" for cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement. Since commit d92cc4d51643 ("kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for all architectures. This can take advantage of the parallel option (-j) for "make clean". I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep" target no longer exists. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
2021-08-11xtensa: move core-y in arch/xtensa/Makefile to arch/xtensa/KbuildMasahiro Yamada1-3/+0
Use obj-y to clean up Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Message-Id: <20210811163731.186125-4-masahiroy@kernel.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2021-08-11xtensa: build platform directories unconditionallyMasahiro Yamada1-6/+1
All of arch/xtensa/platforms/*/ have Makefile. You do not need to check the presence of Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Message-Id: <20210811163731.186125-3-masahiroy@kernel.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2021-08-11xtensa: do not build variants directoryMasahiro Yamada1-4/+2
None of arch/xtensa/variants/*/ has Makefile, so 'buildvar' is always empty. Perhaps, downstream variant code might be dropped in, but given the fact that none of upstream variants builds anything in their variant directory, I doubt this is needed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Message-Id: <20210811163731.186125-2-masahiroy@kernel.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2021-08-11xtensa: remove unneeded exportsMasahiro Yamada1-2/+0
These are not used in any of subdirectories. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Message-Id: <20210811163731.186125-1-masahiroy@kernel.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2021-05-06arch: use cross_compiling to check whether it is a cross build or notMasahiro Yamada1-5/+1
'cross_compiling' is defined by the top Makefile and available for arch Makefiles to check whether it is a cross build or not. A good thing is the variable name 'cross_compiling' is self-documenting. This is a simple replacement for m68k, mips, sh, for which $(ARCH) and $(SRCARCH) always match. No functional change is intended for xtensa, either. This is rather a fix for parisc because arch/parisc/Makefile defines UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix is not working in Kconfig time. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Helge Deller <deller@gmx.de> # parisc Acked-by: Max Filippov <jcmvbkbc@gmail.com> # xtensa
2021-04-04xtensa: move CONFIG_CPU_*_ENDIAN defines to KconfigMasahiro Yamada1-8/+1
Move the definition of CONFIG_CPU_*_ENDIAN to Kconfig, the best place for CONFIG options. I slightly simplified the test code. You can use the -P option to suppress linemarker generation. The grep command is unneeded. $ echo __XTENSA_EB__ | xtensa-linux-gcc -E - # 1 "<stdin>" # 1 "<built-in>" # 1 "<command-line>" # 1 "<stdin>" 1 $ echo __XTENSA_EB__ | xtensa-linux-gcc -E -P - 1 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Message-Id: <20210313122342.69995-1-masahiroy@kernel.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2021-01-29arch: xtensa: Remove CONFIG_OPROFILE supportViresh Kumar1-1/+0
The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. Remove the old oprofile's architecture specific support. Suggested-by: Christoph Hellwig <hch@infradead.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Robert Richter <rric@kernel.org> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: William Cohen <wcohen@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Thomas Gleixner <tglx@linutronix.de>
2019-11-26xtensa: add XIP kernel supportMax Filippov1-1/+2
XIP (eXecute In Place) kernel image is the image that can be run directly from ROM, using RAM only for writable data. XIP xtensa kernel differs from regular xtensa kernel in the following ways: - it has exception/IRQ vectors merged into text section. No vectors relocation takes place at kernel startup. - .data/.bss location must be specified in the kernel configuration, its content is copied there in the _startup function. - .init.text is merged with the rest of text and is executed from ROM. - when MMU is used the virtual address where the kernel will be mapped must be specified in the kernel configuration. It may be in the KSEG or in the KIO, __pa macro is adjusted to be able to handle both. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-12-02xtensa: generate uapi header and syscall table header filesFiroz Khan1-0/+3
System call table generation script must be run to gener- ate unistd_32.h and syscall_table.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32.h and syscall_table.h files by the syscall table generation script invoked by xtensa/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/syscall.c file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-10-26Merge tag 'devicetree-for-4.20' of ↵Linus Torvalds1-11/+1
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull Devicetree updates from Rob Herring: "A bit bigger than normal as I've been busy this cycle. There's a few things with dependencies and a few things subsystem maintainers didn't pick up, so I'm taking them thru my tree. The fixes from Johan didn't get into linux-next, but they've been waiting for some time now and they are what's left of what subsystem maintainers didn't pick up. Summary: - Sync dtc with upstream version v1.4.7-14-gc86da84d30e4 - Work to get rid of direct accesses to struct device_node name and type pointers in preparation for removing them. New helpers for parsing DT cpu nodes and conversions to use the helpers. printk conversions to %pOFn for printing DT node names. Most went thru subystem trees, so this is the remainder. - Fixes to DT child node lookups to actually be restricted to child nodes instead of treewide. - Refactoring of dtb targets out of arch code. This makes the support more uniform and enables building all dtbs on c6x, microblaze, and powerpc. - Various DT binding updates for Renesas r8a7744 SoC - Vendor prefixes for Facebook, OLPC - Restructuring of some ARM binding docs moving some peripheral bindings out of board/SoC binding files - New "secure-chosen" binding for secure world settings on ARM - Dual licensing of 2 DT IRQ binding headers" * tag 'devicetree-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (78 commits) ARM: dt: relicense two DT binding IRQ headers power: supply: twl4030-charger: fix OF sibling-node lookup NFC: nfcmrvl_uart: fix OF child-node lookup net: stmmac: dwmac-sun8i: fix OF child-node lookup net: bcmgenet: fix OF child-node lookup drm/msm: fix OF child-node lookup drm/mediatek: fix OF sibling-node lookup of: Add missing exports of node name compare functions dt-bindings: Add OLPC vendor prefix dt-bindings: misc: bk4: Add device tree binding for Liebherr's BK4 SPI bus dt-bindings: thermal: samsung: Add SPDX license identifier dt-bindings: clock: samsung: Add SPDX license identifiers dt-bindings: timer: ostm: Add R7S9210 support dt-bindings: phy: rcar-gen2: Add r8a7744 support dt-bindings: can: rcar_can: Add r8a7744 support dt-bindings: timer: renesas, cmt: Document r8a7744 CMT support dt-bindings: watchdog: renesas-wdt: Document r8a7744 support dt-bindings: thermal: rcar: Add device tree support for r8a7744 Documentation: dt: Add binding for /secure-chosen/stdout-path dt-bindings: arm: zte: Move sysctrl bindings to their own doc ...
2018-10-02kbuild: consolidate Devicetree dtb build rulesRob Herring1-11/+1
There is nothing arch specific about building dtb files other than their location under /arch/*/boot/dts/. Keeping each arch aligned is a pain. The dependencies and supported targets are all slightly different. Also, a cross-compiler for each arch is needed, but really the host compiler preprocessor is perfectly fine for building dtbs. Move the build rules to a common location and remove the arch specific ones. This is done in a single step to avoid warnings about overriding rules. The build dependencies had been a mixture of 'scripts' and/or 'prepare'. These pull in several dependencies some of which need a target compiler (specifically devicetable-offsets.h) and aren't needed to build dtbs. All that is really needed is dtc, so adjust the dependencies to only be dtc. This change enables support 'dtbs_install' on some arches which were missing the target. Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring <robh@kernel.org>
2018-09-11xtensa: remove unnecessary KBUILD_SRC ifeq conditionalMasahiro Yamada1-4/+0
You can always prefix variant/platform header search paths with $(srctree)/ because $(srctree) is '.' for in-tree building. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-08-24kbuild: rename LDFLAGS to KBUILD_LDFLAGSMasahiro Yamada1-1/+1
Commit a0f97e06a43c ("kbuild: enable 'make CFLAGS=...' to add additional options to CC") renamed CFLAGS to KBUILD_CFLAGS. Commit 222d394d30e7 ("kbuild: enable 'make AFLAGS=...' to add additional options to AS") renamed AFLAGS to KBUILD_AFLAGS. Commit 06c5040cdb13 ("kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS. For some reason, LDFLAGS was not renamed. Using a well-known variable like LDFLAGS may result in accidental override of the variable. Kbuild generally uses KBUILD_ prefixed variables for the internally appended options, so here is one more conversion to sanitize the naming convention. I did not touch Makefiles under tools/ since the tools build system is a different world. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
2017-12-10xtensa: build kernel with text-section-literalsMax Filippov1-3/+3
vmlinux.lds.S doesn't do anything special with literals, so instead of keeping them separate put them into the corresponding text sections. Drop explicit .literal sections from the vmlinux.lds.S, use standard section macros. Mark literal pool locations in the assembly sources. Unfortunately assembler doesn't put literals into .init sections and external libgcc may still have .literal sections, so sed transformation to the linker script is still needed. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-12-09xtensa: add -mno-serialize-volatile to CFLAGSMax Filippov1-0/+1
By default xtensa gcc inserts memw for all volatile object accesses. This is too pessimistic for the kernel: there should be no "normal" volatile objects, and all special objects, like MMIO or objects shared between CPUs should have explicit barriers. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-03-01xtensa: clean up bootable image build targetsMax Filippov1-5/+3
Currently xtensa uses 'zImage' as a synonym of 'all', but in fact xtensa supports three targets: 'Image' (ELF image with reset vector), 'zImage' (compressed redboot image) and 'uImage' (U-Boot image). Provide separate 'Image', 'zImage' and 'uImage' make targets that only build corresponding image type. Make 'all' build all images appropriate for a platform. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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>
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