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* ARC: rename default defconfigVineet Gupta2014-12-171-1/+1
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: remove gcc mpy heuristicsVineet Gupta2014-10-131-16/+1
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: Adjustments for gcc 4.8Vineet Gupta2013-06-271-8/+16
| | | | | | | | | | | | | | | | * DWARF unwinder related + Force DWARF2 compliant .debug_frame (gcc 4.8 defaults to DWARF4 which kernel unwinder can't grok). + Discard the additional .eh_frame generated + Discard the dwarf4 debug info generated by -gdwarf-2 for normal no debug case * 4.8 already uses arc600 multilibs for -mno-mpy * switch to using uclibc compiler (to get -mmedium-calls and -mno-sdata) and also since buildroot can only use 1 toolchain Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: Use kconfig helper IS_ENABLED() to get rid of defines.hVineet Gupta2013-06-221-3/+1
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [TB10x] Add support for TB10x platformChristian Ruppert2013-05-071-0/+1
| | | | | | | | | | | Infrastructure required to make the Linux kernel compile and boot on the Abilis Systems TB10x series of SOCs based on ARC700 CPUs: - Kmake related files (Kconfig, Makefile, tb10x_defconfig) - TB10x platform initialisation Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [build] Allow uncompressed uImageVineet Gupta2013-04-091-2/+3
| | | | | | | | | | | The existing uImage target always generates gzip compressed image which drags bootup for some very slow FPGA customer boards. So introduce seperate make targets:uImage.{bin,gz} with uncompressed being default. Also tie gz generation to CONFIG_KERNEL_GZIP, which a platform can select in it's Kconfig if it wishes gz to be default. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [build] cleanup Makefile a bitVineet Gupta2013-04-091-2/+3
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [build] silence make defconfig warnings with host gcc 4.7Vineet Gupta2013-04-091-0/+4
| | | | | | | | | | | | | | | | | | | | We do cross compiles for ARC Linux. With gcc 4.7, a make defconfig spews out the following: ------------------->8-------------------------- make ARCH=arc defconfig gcc: error: unrecognized command line option '-marc600' gcc: error: unrecognized command line option '-mA7' gcc: error: unrecognized command line option '-mno-sdata' gcc: error: unrecognized command line option '-mno-mpy' *** Default configuration is based on 'fpga_defconfig' ------------------->8-------------------------- This apparently is coming from LIBGCC line - which is strange to be invoked for defconfig generation. Reported-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [Review] Multi-platform image #4: Isolate platform headersVineet Gupta2013-02-151-15/+1
| | | | | | | | | | | | | | -Top level ARC makefile removes -I for platform headers -asm/irq.h no longer includes plat/irq.h -platform makefile adds -I for it's specfic platform headers -platform code to directly include it's plat/irq.h -Linker script needed plat/memmap.h for CCM info, already in .config Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
* ARC: Boot #2: Verbose Boot reporting / feature verificationVineet Gupta2013-02-151-0/+2
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: SMP supportVineet Gupta2013-02-151-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARC common code to enable a SMP system + ISS provided SMP extensions. ARC700 natively lacks SMP support, hence some of the core features are are only enabled if SoCs have the necessary h/w pixie-dust. This includes: -Inter Processor Interrupts (IPI) -Cache coherency -load-locked/store-conditional ... The low level exception handling would be completely broken in SMP because we don't have hardware assisted stack switching. Thus a fair bit of this code is repurposing the MMU_SCRATCH reg for event handler prologues to keep them re-entrant. Many thanks to Rajeshwar Ranga for his initial "major" contributions to SMP Port (back in 2008), and to Noam Camus and Gilad Ben-Yossef for help with resurrecting that in 3.2 kernel (2012). Note that this platform code is again singleton design pattern - so multiple SMP platforms won't build at the moment - this deficiency is addressed in subsequent patches within this series. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rajeshwar Ranga <rajeshwar.ranga@gmail.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Gilad Ben-Yossef <gilad@benyossef.com>
* ARC: OProfile supportVineet Gupta2013-02-151-0/+2
| | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Robert Richter <rric@kernel.org> Cc: oprofile-list@lists.sf.net Reviewed-by: James Hogan <james.hogan@imgtec.com>
* ARC: [optim] Cache "current" in Register r25Vineet Gupta2013-02-151-0/+9
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [DeviceTree] Basic supportVineet Gupta2013-02-151-0/+9
| | | | | | | | | | | | | | | | | | | | This is minimal infrastructure needed for devicetree work. It uses an a sample "skeleton" devicetree - embedded in kernel image - to print the board, manufacturer by parsing the top-level "compatible" string. As of now we don't need any additional "board" specific "machine_desc". TODO: support interpreting the command line as boot-loader passed dtb Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: devicetree-discuss@lists.ozlabs.org Cc: Rob Herring <rob.herring@calxeda.com> Cc: James Hogan <james.hogan@imgtec.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: James Hogan <james.hogan@imgtec.com>
* ARC: Build system: Makefiles, Kconfig, Linker scriptVineet Gupta2013-02-111-0/+115
Arnd in his review pointed out that arch Kconfig organisation has several deficiencies: * Build time entries for things which can be runtime extracted from DT (e.g. SDRAM size, core clk frequency..) * Not multi-platform-image-build friendly (choice .. endchoice constructs) * cpu variants support (750/770) is exclusive. The first 2 have been fixed in subsequent patches. Due to the nature of the 750 and 770, it is not possible to build for both together, w/o special runtime glue code which would hurt performance. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Sam Ravnborg <sam@ravnborg.org>
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