This is the 7th version patchset to add the Linux kernel port for Andes(nds32) processors. Almost all of the feedbacks from v6 patchseries has been addressed and we rebase it to v4.16-rc1. Thanks to everyone who provided feedback and help on the previous version. This patchset adds core architecture support to Linux for Andestech's N13, N15, D15, N10, D10 processor cores. Based on the 16/32-bit AndeStar RISC-like architecture, we designed the configurable AndesCore series of embedded processor families. AndesCores range from highly performance-efficient small-footprint cores for microcontrollers and deeply-embedded applications to 1GHz+ cores running Linux, covering general-purpose N-series cores for a wide range of computing need, DSP-capable D-series cores for digital signal control, instruction-extensible E-series cores for application-specific acceleration, and secure S-series cores for best protection of the most valuable. The patches are based on v4.16-rc1, and can also be found in the following git tree: https://github.com/andestech/linux.git nds32-4.16-rc1-v7 The build script and toolchain repositories are able to be found here: https://github.com/andestech/build_script.git Freely available instruction set and architecture overview documents can be found on the following page: http://www.andestech.com/product.php?cls=9 Vincent Ren-Wei Chen and I will maintain this port. Thanks to everyone who helped us and contributed to it. :) Any feedback is welcome. Changes in v7: - Update cpu binding document to add "andestech,nds32v3" as fallback - Remove unnecessary configs of arch/nds32/Kconfig - Use GENERIC_CALIBRATE_DELAY - Add more help texts for minimum CPU type config - Update defconfig because of Kconfig changed and bug fixed - Move early_trap_init() declaration to nds32.h - Refine dma.c - Remove apply_relocate() in module.c and include <linux/moduleloader.h> to catch it - Add do_kernel_restart() in machine_restart() - Clean up setup.c to remove CONFIG_VGA_CONSOLE and some extern declaration functions - Add negative dependency for VGA_CONSOLE on nds32 - Refine ptrace.c and arch/nds32/include/asm/ptrace.h - Refine syscall restart flow and arch/nds32/kernel/signal.c - Fix a bug in VDSO - Remove the handling for kernel code unaligned accessing - Add a description for unaligned access handling in git commit message. - Rebase to v4.16-rc1 - Replace ACCESS_ONCE with READ_ONCE - Replace atomic_long_dec(&mm->nr_ptes) with mm_dec_nr_ptes(mm) - Remove print_symbol(%s) with printk(%pS) - Add bpf_perf_event.h - Remove init_stack and init_thread_info Changes in v6: - Refine naming for atl2c - Refine ae3xx.dts - Remove CONFIG_TIMER_ATCPIT100 in defconfig - Refine elf.h - Fix a vdso bug - Separate arch patchset and timer patchset - To select TIMER_OF in drivers/clocksource/Kconfig instead of arch/nds32/Kconfig Changes in v5: - Remove __NR__llseek and sys_mmap() - Add a comment to explain that we don't have clocksource cycle counter in the CPU - Add volatile in iounmap() - Fix typo Featuretures to Features - Replace CPU_CACHE_NONALIASING with !CPU_CACHE_ALIASING - Fix a endian bug when we try to get val = of_get_property(cpu, "clock-frequency", NULL) - Add screen_info to fix the building error when CONFIG_ VGA_CONSOLE is enabled - Remove unnecessary msync() - Add depends on !64BIT || BROKEN for faraday Kconfig because the descriptor only supports 32bit - Add atl2c binding document - Remove unnecessary include headers - Fix a vector table bug. It placed wrong vector handlers for 2 exceptions. - Fix a vdso bug. It may encounter TLB multi-hit exception because we accidently set it as a global page. - Add proper isb and barrier after some cache operations - Fix a bug in system call restart flow. $r0 ~ $r5 does not be recovered before restarting system call - Fix the build errors for OpenRISC and SPARC because io.h changed. - Update ae3xx.dts to support atl2c. Changes in v4: - Add atcpit100 timer driver due to it include vdso implementations and sent them together with nds32 may help reviewer to review. - Update ae3xx.dts for atcpit100 clock setting and remove vdso settings. - To get cycle counter register by timer driver instead of dts. - Use "depends on NDS32 || COMPILE_TEST" in atcpit100 driver because it is needed for nds32 vdso - Update defconfig becasue kconfig rename from CONFIG_CLKSRC_ATCPIT100 to CONFIG_TIMER_ATCPIT100 - Remove ag101p.dts because we are not yet ready for ag101p platform. - Update copyright style to SPDX-License-Identifier - Include <linux/uaccess.h> instead of <asm/uaccess.h> - Add local_irq_save()/local_irq_restore() to protect SR_TLB_VPN in update_mmu_cache(). - Update cpu_dcache_inval_all implementation to make sure all level cache are writeback. Changes in v3: - Use arch's io.h instead of generic one - Add andestech-boards binding document - Update nds32/cpus.txt binding document - Remove atcpit100 timer drivers - Select NO_BOOTMEM and delete HAVE_MEMBLOCK_NODE_MAP - make CPU_BIG_ENDIAN and CPU_LITTLE_ENDIAN are dependent - Add cpu type to select HWZOL/CPU_CACHE_ALIASING - Change CPU_CACHE_NONALIASING to CPU_CACHE_ALIASING - Remove bootarg from device tree script - Update ag101p.dts and ae3xx.dts for correct board name. - Clear and simplify defconfig - Implement L2C_R_REG/ L2C_W_REG with readl/writel instead of __raw_readl/__raw_writel for endian save - Remove early_init_dt_add_memory_arch/early_init_dt_alloc_memory_arch to use the generic ones - Refine devicetree.c - Fix bug https://lkml.kernel.org/r/1499782590-31366-1-git-send-ema... - Refine irqchip/irq-ativic32.c implementations - Add COMPILE_TEST in drivers/net/ethernet/faraday/Kconfig - Refine cache operations - Add CONFIG_HW_SUPPORT_UNALIGNMENT_ACCESS - Fix ZERO_PAGE define - Remove SA_RESTORER - Remove uapi/asm/signal.h - Redefine user_pt_regs - Remove spinlock.h - Remove __ARCH_WANT_RENAMEAT and __ARCH_WANT_SYSCALL_OFF_T from unistd.h - Remove set_fs(USER_DS) because flush_old_exec() will do this setting - Replace in_atomic() with faulthandler_disabled() - Add barrier.h - Select COMMON_CLK - Add clk_pll in dts - Add of_clk_init() in arch/nds32/kernel/time.c Changes in v2: - Set GENERIC_CALIBRATE_DELAY default n - Add earlycon support - Remove earlyprintk - Add CPU_BIG_ENDIAN, CPU_LITTLE_ENDIAN support - Refine unalignment access exception handler - Add VMSPLIT support - Use only one defconfig - Change interrupt-cells from 2 to 1 - Refine andestech cpu names in bindings/nds32/cpus.txt - Get clock frequency in dts because fpga bitmap doesn't include this feature - Update MAINTAINERS for bindings - Remove unused configs in Kconfig - Refine device tree scripts - Refine coding style - Use generic ioremap_nocache - Remove L2CC_PA_BASE define and its codes in head.S. It will be moved to bootloader. - Set PHYS_OFFSET to 0x0 instead of CONFIG_MEMORY_START - Remove unused macros - Simplify cpu_cache_* API - Change __asm__ __volatile__ to asm volatile - Refine uaccess.h - Remove unused/deprecated syscall - Use generic posix_types.h - Remove arch_trace_hardirqs_on/arch_trace_hardirqs_off - Fix bug of restart syscall - Refine syscall implementations - Use IS_ENABLED to replace ifdef as possible - Remove device_initcall(nds32_device_probe) - Refine vdso implementations - Refine copy_from_user()/copy_to_user()/clear_user()/get_user()/memmove()/memcpy() - Refine ioremap.c - Refine irq-ativic32.c - Fix a bug of earlycon.c - Export ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt - Add atcpit100 driver Greentime Hu (37): openrisc: add ioremap_nocache declaration before include asm-generic/io.h and sync ioremap prototype with it. asm-generic/io.h: move ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of ifndef CONFIG_MMU sparc: io: To use the define of ioremap_[nocache|wc|wb] in asm-generic/io.h earlycon: add reg-offset to physical address before mapping drivers/video/concole: add negative dependency for VGA_CONSOLE on nds32 nds32: Assembly macros and definitions nds32: Kernel booting and initialization nds32: Exception handling nds32: MMU definitions nds32: MMU initialization nds32: MMU fault handling and page table management nds32: Cache and TLB routines nds32: Process management nds32: IRQ handling nds32: Atomic operations nds32: Device specific operations nds32: DMA mapping API nds32: ELF definitions nds32: System calls handling nds32: VDSO support nds32: Signal handling support nds32: Library functions nds32: Debugging support nds32: L2 cache support nds32: Loadable modules nds32: Generic timers support nds32: Device tree support nds32: Miscellaneous header files nds32: defconfig nds32: Build infrastructure MAINTAINERS: Add nds32 dt-bindings: nds32 CPU Bindings dt-bindings: nds32 L2 cache controller Bindings dt-bindings: nds32 SoC Bindings dt-bindings: interrupt-controller: Andestech Internal Vector Interrupt Controller irqchip: Andestech Internal Vector Interrupt Controller driver net: faraday add nds32 support. .../interrupt-controller/andestech,ativic32.txt | 19 + .../devicetree/bindings/nds32/andestech-boards | 40 + Documentation/devicetree/bindings/nds32/atl2c.txt | 28 + Documentation/devicetree/bindings/nds32/cpus.txt | 38 + MAINTAINERS | 11 + arch/nds32/Kconfig | 103 +++ arch/nds32/Kconfig.cpu | 174 ++++ arch/nds32/Makefile | 66 ++ arch/nds32/boot/Makefile | 15 + arch/nds32/boot/dts/Makefile | 8 + arch/nds32/boot/dts/ae3xx.dts | 85 ++ arch/nds32/configs/defconfig | 104 +++ arch/nds32/include/asm/Kbuild | 55 ++ arch/nds32/include/asm/assembler.h | 39 + arch/nds32/include/asm/barrier.h | 15 + arch/nds32/include/asm/bitfield.h | 963 +++++++++++++++++++++ arch/nds32/include/asm/cache.h | 12 + arch/nds32/include/asm/cache_info.h | 13 + arch/nds32/include/asm/cacheflush.h | 44 + arch/nds32/include/asm/current.h | 12 + arch/nds32/include/asm/delay.h | 39 + arch/nds32/include/asm/dma-mapping.h | 14 + arch/nds32/include/asm/elf.h | 171 ++++ arch/nds32/include/asm/fixmap.h | 29 + arch/nds32/include/asm/futex.h | 103 +++ arch/nds32/include/asm/highmem.h | 65 ++ arch/nds32/include/asm/io.h | 83 ++ arch/nds32/include/asm/irqflags.h | 36 + arch/nds32/include/asm/l2_cache.h | 137 +++ arch/nds32/include/asm/linkage.h | 11 + arch/nds32/include/asm/memory.h | 105 +++ arch/nds32/include/asm/mmu.h | 12 + arch/nds32/include/asm/mmu_context.h | 68 ++ arch/nds32/include/asm/module.h | 11 + arch/nds32/include/asm/nds32.h | 81 ++ arch/nds32/include/asm/page.h | 67 ++ arch/nds32/include/asm/pgalloc.h | 96 ++ arch/nds32/include/asm/pgtable.h | 409 +++++++++ arch/nds32/include/asm/proc-fns.h | 44 + arch/nds32/include/asm/processor.h | 103 +++ arch/nds32/include/asm/ptrace.h | 77 ++ arch/nds32/include/asm/shmparam.h | 19 + arch/nds32/include/asm/string.h | 17 + arch/nds32/include/asm/swab.h | 35 + arch/nds32/include/asm/syscall.h | 188 ++++ arch/nds32/include/asm/syscalls.h | 13 + arch/nds32/include/asm/thread_info.h | 76 ++ arch/nds32/include/asm/tlb.h | 28 + arch/nds32/include/asm/tlbflush.h | 47 + arch/nds32/include/asm/uaccess.h | 283 ++++++ arch/nds32/include/asm/unistd.h | 6 + arch/nds32/include/asm/vdso.h | 24 + arch/nds32/include/asm/vdso_datapage.h | 36 + arch/nds32/include/asm/vdso_timer_info.h | 14 + arch/nds32/include/uapi/asm/Kbuild | 29 + arch/nds32/include/uapi/asm/auxvec.h | 12 + arch/nds32/include/uapi/asm/byteorder.h | 13 + arch/nds32/include/uapi/asm/cachectl.h | 14 + arch/nds32/include/uapi/asm/param.h | 11 + arch/nds32/include/uapi/asm/ptrace.h | 25 + arch/nds32/include/uapi/asm/sigcontext.h | 60 ++ arch/nds32/include/uapi/asm/unistd.h | 11 + arch/nds32/kernel/Makefile | 23 + arch/nds32/kernel/asm-offsets.c | 28 + arch/nds32/kernel/atl2c.c | 64 ++ arch/nds32/kernel/cacheinfo.c | 49 ++ arch/nds32/kernel/devtree.c | 19 + arch/nds32/kernel/dma.c | 477 ++++++++++ arch/nds32/kernel/ex-entry.S | 157 ++++ arch/nds32/kernel/ex-exit.S | 184 ++++ arch/nds32/kernel/ex-scall.S | 98 +++ arch/nds32/kernel/head.S | 188 ++++ arch/nds32/kernel/irq.c | 9 + arch/nds32/kernel/module.c | 278 ++++++ arch/nds32/kernel/nds32_ksyms.c | 31 + arch/nds32/kernel/process.c | 208 +++++ arch/nds32/kernel/ptrace.c | 119 +++ arch/nds32/kernel/setup.c | 363 ++++++++ arch/nds32/kernel/signal.c | 324 +++++++ arch/nds32/kernel/stacktrace.c | 47 + arch/nds32/kernel/sys_nds32.c | 50 ++ arch/nds32/kernel/syscall_table.c | 17 + arch/nds32/kernel/time.c | 11 + arch/nds32/kernel/traps.c | 442 ++++++++++ arch/nds32/kernel/vdso.c | 230 +++++ arch/nds32/kernel/vdso/Makefile | 82 ++ arch/nds32/kernel/vdso/datapage.S | 21 + arch/nds32/kernel/vdso/gen_vdso_offsets.sh | 15 + arch/nds32/kernel/vdso/gettimeofday.c | 270 ++++++ arch/nds32/kernel/vdso/note.S | 11 + arch/nds32/kernel/vdso/sigreturn.S | 19 + arch/nds32/kernel/vdso/vdso.S | 18 + arch/nds32/kernel/vdso/vdso.lds.S | 76 ++ arch/nds32/kernel/vmlinux.lds.S | 57 ++ arch/nds32/lib/Makefile | 3 + arch/nds32/lib/clear_user.S | 42 + arch/nds32/lib/copy_from_user.S | 45 + arch/nds32/lib/copy_page.S | 37 + arch/nds32/lib/copy_template.S | 69 ++ arch/nds32/lib/copy_to_user.S | 45 + arch/nds32/lib/memcpy.S | 30 + arch/nds32/lib/memmove.S | 70 ++ arch/nds32/lib/memset.S | 33 + arch/nds32/lib/memzero.S | 18 + arch/nds32/mm/Makefile | 7 + arch/nds32/mm/alignment.c | 576 ++++++++++++ arch/nds32/mm/cacheflush.c | 322 +++++++ arch/nds32/mm/extable.c | 16 + arch/nds32/mm/fault.c | 410 +++++++++ arch/nds32/mm/highmem.c | 79 ++ arch/nds32/mm/init.c | 277 ++++++ arch/nds32/mm/ioremap.c | 62 ++ arch/nds32/mm/mm-nds32.c | 90 ++ arch/nds32/mm/mmap.c | 73 ++ arch/nds32/mm/proc.c | 533 ++++++++++++ arch/nds32/mm/tlb.c | 50 ++ arch/openrisc/include/asm/io.h | 3 +- arch/sparc/include/asm/io_32.h | 5 - arch/sparc/kernel/ioport.c | 4 +- drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-ativic32.c | 107 +++ drivers/net/ethernet/faraday/Kconfig | 8 +- drivers/tty/serial/earlycon.c | 3 +- drivers/video/console/Kconfig | 2 +- include/asm-generic/io.h | 18 +- 125 files changed, 11567 insertions(+), 22 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/andestech,ativic32.txt create mode 100644 Documentation/devicetree/bindings/nds32/andestech-boards create mode 100644 Documentation/devicetree/bindings/nds32/atl2c.txt create mode 100644 Documentation/devicetree/bindings/nds32/cpus.txt create mode 100644 arch/nds32/Kconfig create mode 100644 arch/nds32/Kconfig.cpu create mode 100644 arch/nds32/Makefile create mode 100644 arch/nds32/boot/Makefile create mode 100644 arch/nds32/boot/dts/Makefile create mode 100644 arch/nds32/boot/dts/ae3xx.dts create mode 100644 arch/nds32/configs/defconfig create mode 100644 arch/nds32/include/asm/Kbuild create mode 100644 arch/nds32/include/asm/assembler.h create mode 100644 arch/nds32/include/asm/barrier.h create mode 100644 arch/nds32/include/asm/bitfield.h create mode 100644 arch/nds32/include/asm/cache.h create mode 100644 arch/nds32/include/asm/cache_info.h create mode 100644 arch/nds32/include/asm/cacheflush.h create mode 100644 arch/nds32/include/asm/current.h create mode 100644 arch/nds32/include/asm/delay.h create mode 100644 arch/nds32/include/asm/dma-mapping.h create mode 100644 arch/nds32/include/asm/elf.h create mode 100644 arch/nds32/include/asm/fixmap.h create mode 100644 arch/nds32/include/asm/futex.h create mode 100644 arch/nds32/include/asm/highmem.h create mode 100644 arch/nds32/include/asm/io.h create mode 100644 arch/nds32/include/asm/irqflags.h create mode 100644 arch/nds32/include/asm/l2_cache.h create mode 100644 arch/nds32/include/asm/linkage.h create mode 100644 arch/nds32/include/asm/memory.h create mode 100644 arch/nds32/include/asm/mmu.h create mode 100644 arch/nds32/include/asm/mmu_context.h create mode 100644 arch/nds32/include/asm/module.h create mode 100644 arch/nds32/include/asm/nds32.h create mode 100644 arch/nds32/include/asm/page.h create mode 100644 arch/nds32/include/asm/pgalloc.h create mode 100644 arch/nds32/include/asm/pgtable.h create mode 100644 arch/nds32/include/asm/proc-fns.h create mode 100644 arch/nds32/include/asm/processor.h create mode 100644 arch/nds32/include/asm/ptrace.h create mode 100644 arch/nds32/include/asm/shmparam.h create mode 100644 arch/nds32/include/asm/string.h create mode 100644 arch/nds32/include/asm/swab.h create mode 100644 arch/nds32/include/asm/syscall.h create mode 100644 arch/nds32/include/asm/syscalls.h create mode 100644 arch/nds32/include/asm/thread_info.h create mode 100644 arch/nds32/include/asm/tlb.h create mode 100644 arch/nds32/include/asm/tlbflush.h create mode 100644 arch/nds32/include/asm/uaccess.h create mode 100644 arch/nds32/include/asm/unistd.h create mode 100644 arch/nds32/include/asm/vdso.h create mode 100644 arch/nds32/include/asm/vdso_datapage.h create mode 100644 arch/nds32/include/asm/vdso_timer_info.h create mode 100644 arch/nds32/include/uapi/asm/Kbuild create mode 100644 arch/nds32/include/uapi/asm/auxvec.h create mode 100644 arch/nds32/include/uapi/asm/byteorder.h create mode 100644 arch/nds32/include/uapi/asm/cachectl.h create mode 100644 arch/nds32/include/uapi/asm/param.h create mode 100644 arch/nds32/include/uapi/asm/ptrace.h create mode 100644 arch/nds32/include/uapi/asm/sigcontext.h create mode 100644 arch/nds32/include/uapi/asm/unistd.h create mode 100644 arch/nds32/kernel/Makefile create mode 100644 arch/nds32/kernel/asm-offsets.c create mode 100644 arch/nds32/kernel/atl2c.c create mode 100644 arch/nds32/kernel/cacheinfo.c create mode 100644 arch/nds32/kernel/devtree.c create mode 100644 arch/nds32/kernel/dma.c create mode 100644 arch/nds32/kernel/ex-entry.S create mode 100644 arch/nds32/kernel/ex-exit.S create mode 100644 arch/nds32/kernel/ex-scall.S create mode 100644 arch/nds32/kernel/head.S create mode 100644 arch/nds32/kernel/irq.c create mode 100644 arch/nds32/kernel/module.c create mode 100644 arch/nds32/kernel/nds32_ksyms.c create mode 100644 arch/nds32/kernel/process.c create mode 100644 arch/nds32/kernel/ptrace.c create mode 100644 arch/nds32/kernel/setup.c create mode 100644 arch/nds32/kernel/signal.c create mode 100644 arch/nds32/kernel/stacktrace.c create mode 100644 arch/nds32/kernel/sys_nds32.c create mode 100644 arch/nds32/kernel/syscall_table.c create mode 100644 arch/nds32/kernel/time.c create mode 100644 arch/nds32/kernel/traps.c create mode 100644 arch/nds32/kernel/vdso.c create mode 100644 arch/nds32/kernel/vdso/Makefile create mode 100644 arch/nds32/kernel/vdso/datapage.S create mode 100755 arch/nds32/kernel/vdso/gen_vdso_offsets.sh create mode 100644 arch/nds32/kernel/vdso/gettimeofday.c create mode 100644 arch/nds32/kernel/vdso/note.S create mode 100644 arch/nds32/kernel/vdso/sigreturn.S create mode 100644 arch/nds32/kernel/vdso/vdso.S create mode 100644 arch/nds32/kernel/vdso/vdso.lds.S create mode 100644 arch/nds32/kernel/vmlinux.lds.S create mode 100644 arch/nds32/lib/Makefile create mode 100644 arch/nds32/lib/clear_user.S create mode 100644 arch/nds32/lib/copy_from_user.S create mode 100644 arch/nds32/lib/copy_page.S create mode 100644 arch/nds32/lib/copy_template.S create mode 100644 arch/nds32/lib/copy_to_user.S create mode 100644 arch/nds32/lib/memcpy.S create mode 100644 arch/nds32/lib/memmove.S create mode 100644 arch/nds32/lib/memset.S create mode 100644 arch/nds32/lib/memzero.S create mode 100644 arch/nds32/mm/Makefile create mode 100644 arch/nds32/mm/alignment.c create mode 100644 arch/nds32/mm/cacheflush.c create mode 100644 arch/nds32/mm/extable.c create mode 100644 arch/nds32/mm/fault.c create mode 100644 arch/nds32/mm/highmem.c create mode 100644 arch/nds32/mm/init.c create mode 100644 arch/nds32/mm/ioremap.c create mode 100644 arch/nds32/mm/mm-nds32.c create mode 100644 arch/nds32/mm/mmap.c create mode 100644 arch/nds32/mm/proc.c create mode 100644 arch/nds32/mm/tlb.c create mode 100644 drivers/irqchip/irq-ativic32.c -- 2.16.1
