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* treewide: remove current_text_addrNick Desaulniers2018-10-31
| | | | | | | | | | | | | | | | | Prefer _THIS_IP_ defined in linux/kernel.h. Most definitions of current_text_addr were the same as _THIS_IP_, but a few archs had inline assembly instead. This patch removes the final call site of current_text_addr, making all of the definitions dead code. [akpm@linux-foundation.org: fix arch/csky/include/asm/processor.h] Link: http://lkml.kernel.org/r/20180911182413.180715-1-ndesaulniers@google.com Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* csky: Misc headersGuo Ren2018-10-25
| | | | | | | | This patch adds csky registers' definition, bitops, byteorder, asm-offsets codes. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: SMP supportGuo Ren2018-10-25
| | | | | | | | | | This patch adds boot, ipi, hotplug codes for SMP. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Debug and Ptrace GDBGuo Ren2018-10-25
| | | | | | | This patch adds arch ptrace implementation, stack dump and bug.h. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: User accessGuo Ren2018-10-25
| | | | | | | The patch adds "user access from kernel" codes. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Library functionsGuo Ren2018-10-25
| | | | | | | | | This patch adds string optimize codes and some auxiliary codes. Signed-off-by: Chen Linfei <linfei_chen@c-sky.com> Signed-off-by: Mao Han <han_mao@c-sky.com> Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: ELF and module probeGuo Ren2018-10-25
| | | | | | | This patch adds ELF definition and module relocate codes. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Atomic operationsGuo Ren2018-10-25
| | | | | | | | | This patch adds atomic, cmpxchg, spinlock files. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Peter Zijlstra <peterz@infradead.org>
* csky: IRQ handlingGuo Ren2018-10-25
| | | | | | | | This patch adds IRQ handling files. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: VDSO and rt_sigreturnGuo Ren2018-10-25
| | | | | | | | This patch adds files related to VDSO and our VDSO only support rt_sigreturn. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Process management and SignalGuo Ren2018-10-25
| | | | | | | | | This patch adds files related to task_switch, sigcontext, signal, fpu context switch. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Eric W. Biederman <ebiederm@xmission.com>
* csky: MMU and page table managementGuo Ren2018-10-25
| | | | | | | | | | | | | | | | | | | | | This patch adds files related to memory management and here is our memory-layout: Fixmap : 0xffc02000 – 0xfffff000 (4 MB - 12KB) Pkmap : 0xff800000 – 0xffc00000 (4 MB) Vmalloc : 0xf0200000 – 0xff000000 (238 MB) Lowmem : 0x80000000 – 0xc0000000 (1GB) abiv1 CPU (CK610) is VIPT cache and it doesn't support highmem. abiv2 CPUs are all PIPT cache and they could support highmem. Lowmem is directly mapped by msa0 & msa1 reg, and we needn't setup memory page table for it. Link:https://lore.kernel.org/lkml/20180518215548.GH17671@n2100.armlinux.org.uk/ Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Christoph Hellwig <hch@infradead.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Cache and TLB routinesGuo Ren2018-10-25
| | | | | | | This patch adds cache and tlb sync codes for abiv1 & abiv2. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: System CallGuo Ren2018-10-25
| | | | | | | This patch adds files related to syscall. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Exception handling and mm-faultGuo Ren2018-10-25
| | | | | | | This patch adds exception handling code, cpuinfo and mm-fault code. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* csky: Build infrastructureGuo Ren2018-10-25
This patch adds Makefile, Kconfig for build infrastructure. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Acked-by: Arnd Bergmann <arnd@arndb.de>