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* csky: Misc headersGuo Ren2018-10-262-0/+53
| | | | | | | | 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: Library functionsGuo Ren2018-10-266-0/+428
| | | | | | | | | 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 Ren2018-10-261-0/+26
| | | | | | | 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: VDSO and rt_sigreturnGuo Ren2018-10-261-0/+17
| | | | | | | | 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: MMU and page table managementGuo Ren2018-10-254-0/+205
| | | | | | | | | | | | | | | | | | | | | 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 Ren2018-10-252-0/+101
| | | | | | | 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: Exception handling and mm-faultGuo Ren2018-10-252-0/+486
| | | | | | | 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 Ren2018-10-251-0/+8
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>