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Message-Id: <1308483825-6023-1-git-send-email-jonas@southpole.se> Date: Sun, 19 Jun 2011 13:43:26 +0200 From: Jonas Bonn <jonas@...thpole.se> To: linux-kernel@...r.kernel.org Subject: OpenRISC Architecture: Request for review This is a port of Linux to the OpenRISC 1000 architecture. The OpenRISC architecture was conceived with the idea of creating a CPU with an open specification and freely licensed implementations thereof. The OR1200 implementation of the OpenRISC 1000 architecture is LGPL licensed, runs on FPGA's from a broad number of vendors, and is currently being used in a number of successful industrial projects. A product of OpenCores.org, development of the OpenRISC architecture has unfortunately languished for a while buried amongst a multitude of other projects. Recently, however, a renewed effort to lift the CPU project out of its doldrums was initiated by the OpenCores.org management and a community of participants consisting of both commercial and independent contributors has rapidly taken shape around this effort. The project now lives (at least temporarily) at http://openrisc.net where it can get the attention it needs. The active development community around this architecture has grown from roughly 5 to 25 developers in the last year and we are looking forward to seeing what may emerge as the community grows and this CPU architecture is allowed to be developed truly in the open. We have been tracking upstream Linux with our port since 2.6.35. Tracking upstream has been mostly painless as the changes that require architecture modifications are pretty easy to spot with git. That said, we want to be "upstream!" So here's our code. The following patches implement support for the OpenRISC architecture on Linux. The patch series is broken into functional units that, hopefully, will facilitate review. There are a couple of blemishes here and there that we are aware of and that we aim to clean up in short order. That said, the important thing is that the userspace-facing ABI has settled and will not be changing again, so any necessary cleanups can just as easily be made after the tree is merged upstream as before. We are excited by the prospect of getting our work reviewed by our peers and we are excited by this opportunity to bring the OpenRISC architecture to the attention of a larger audience. Thanks for taking the time to consider this port for inclusion. The branch 'for-upstream' of the following git repository has the patch series in this thread: git://openrisc.net/jonas/linux Web view for that branch at: http://git.openrisc.net/cgit.cgi/jonas/linux/log/?h=for-upstream Notes ----- See the file README.openrisc for information on getting a toolchain and simulator for building and running this code. We currently have only a uClibc port to this architecture and this does not fully support the reduced set of generic syscalls. In our upstream submission we have included only the reduced set of syscalls, while we will be carrying an out-of-tree patch that enables Linux to work with our uClibc port until we are able to sort this out. This shouldn't, however, need to further delay beginning the code review. There's a short TODO.openrisc file, as well. Some of the items listed there could potentially be done before any pull request for the architecture is sent. There are also fair number of places where we still have old test code laying about inside #ifdefs and comments. The intention is to get all that cleaned up before the final pull request, but I didn't want to allow that to delay beginning the review process any further. Diff stat follows: MAINTAINERS | 8 + arch/openrisc/Kconfig | 245 +++++ arch/openrisc/Makefile | 66 ++ arch/openrisc/README.openrisc | 102 ++ arch/openrisc/TODO.openrisc | 16 + arch/openrisc/boot/Makefile | 15 + arch/openrisc/boot/dts/aac.dts | 290 ++++++ arch/openrisc/boot/dts/atlys.dts | 94 ++ arch/openrisc/boot/dts/system.dts | 88 ++ arch/openrisc/configs/aac_defconfig | 115 +++ arch/openrisc/configs/minimal_defconfig | 69 ++ arch/openrisc/configs/or1ksim_defconfig | 67 ++ arch/openrisc/include/asm/Kbuild | 62 ++ arch/openrisc/include/asm/asm-offsets.h | 1 + arch/openrisc/include/asm/bitops.h | 59 ++ arch/openrisc/include/asm/bitops/__ffs.h | 32 + arch/openrisc/include/asm/bitops/__fls.h | 32 + arch/openrisc/include/asm/bitops/ffs.h | 31 + arch/openrisc/include/asm/bitops/fls.h | 32 + arch/openrisc/include/asm/byteorder.h | 1 + arch/openrisc/include/asm/cache.h | 29 + arch/openrisc/include/asm/cacheflush.h | 25 + arch/openrisc/include/asm/cpuinfo.h | 34 + arch/openrisc/include/asm/delay.h | 44 + arch/openrisc/include/asm/dma-mapping.h | 129 +++ arch/openrisc/include/asm/elf.h | 109 ++ arch/openrisc/include/asm/fixmap.h | 113 +++ arch/openrisc/include/asm/gpio.h | 65 ++ arch/openrisc/include/asm/io.h | 220 ++++ arch/openrisc/include/asm/irq.h | 27 + arch/openrisc/include/asm/irqflags.h | 29 + arch/openrisc/include/asm/linkage.h | 25 + arch/openrisc/include/asm/memblock.h | 24 + arch/openrisc/include/asm/mmu.h | 26 + arch/openrisc/include/asm/mmu_context.h | 43 + arch/openrisc/include/asm/mutex.h | 27 + arch/openrisc/include/asm/page.h | 112 +++ arch/openrisc/include/asm/param.h | 26 + arch/openrisc/include/asm/pci.h | 28 + arch/openrisc/include/asm/pgalloc.h | 142 +++ arch/openrisc/include/asm/pgtable.h | 449 +++++++++ arch/openrisc/include/asm/processor.h | 117 +++ arch/openrisc/include/asm/prom.h | 92 ++ arch/openrisc/include/asm/ptrace.h | 124 +++ arch/openrisc/include/asm/serial.h | 36 + arch/openrisc/include/asm/sigcontext.h | 38 + arch/openrisc/include/asm/smp.h | 22 + arch/openrisc/include/asm/spinlock.h | 24 + arch/openrisc/include/asm/spr_defs.h | 604 +++++++++++ arch/openrisc/include/asm/string.h | 34 + arch/openrisc/include/asm/syscall.h | 78 ++ arch/openrisc/include/asm/syscalls.h | 27 + arch/openrisc/include/asm/system.h | 56 + arch/openrisc/include/asm/thread_info.h | 167 +++ arch/openrisc/include/asm/timex.h | 35 + arch/openrisc/include/asm/tlb.h | 34 + arch/openrisc/include/asm/tlbflush.h | 72 ++ arch/openrisc/include/asm/uaccess.h | 385 +++++++ arch/openrisc/include/asm/unaligned.h | 51 + arch/openrisc/include/asm/unistd.h | 29 + arch/openrisc/kernel/Makefile | 14 + arch/openrisc/kernel/asm-offsets.c | 71 ++ arch/openrisc/kernel/dma.c | 152 +++ arch/openrisc/kernel/entry.S | 1134 +++++++++++++++++++++ arch/openrisc/kernel/head.S | 1607 ++++++++++++++++++++++++++++++ arch/openrisc/kernel/idle.c | 81 ++ arch/openrisc/kernel/init_task.c | 41 + arch/openrisc/kernel/irq.c | 169 ++++ arch/openrisc/kernel/module.c | 126 +++ arch/openrisc/kernel/or32_ksyms.c | 47 + arch/openrisc/kernel/process.c | 351 +++++++ arch/openrisc/kernel/prom.c | 109 ++ arch/openrisc/kernel/ptrace.c | 580 +++++++++++ arch/openrisc/kernel/ptrace.h | 37 + arch/openrisc/kernel/setup.c | 393 ++++++++ arch/openrisc/kernel/signal.c | 410 ++++++++ arch/openrisc/kernel/sys_call_table.c | 28 + arch/openrisc/kernel/sys_or32.c | 83 ++ arch/openrisc/kernel/time.c | 182 ++++ arch/openrisc/kernel/traps.c | 390 ++++++++ arch/openrisc/kernel/vmlinux.lds.S | 115 +++ arch/openrisc/lib/Makefile | 5 + arch/openrisc/lib/delay.c | 72 ++ arch/openrisc/lib/string.S | 204 ++++ arch/openrisc/mm/Makefile | 5 + arch/openrisc/mm/fault.c | 338 +++++++ arch/openrisc/mm/init.c | 329 ++++++ arch/openrisc/mm/ioremap.c | 112 +++ arch/openrisc/mm/tlb.c | 198 ++++ arch/openrisc/or1ksim.cfg | 888 +++++++++++++++++ 90 files changed, 13447 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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