From: Greentime Hu <greentime@xxxxxxxxxxxxx> This patch adds Makefile, Kconfig and vmlinux.lds.S files required for building an nds32 kernel. Signed-off-by: Vincent Chen <vincentc@xxxxxxxxxxxxx> Signed-off-by: Greentime Hu <greentime@xxxxxxxxxxxxx> --- arch/nds32/Kconfig | 107 +++++++++++++++++++++++++++++ arch/nds32/Kconfig.cpu | 131 ++++++++++++++++++++++++++++++++++++ arch/nds32/Makefile | 66 ++++++++++++++++++ arch/nds32/boot/Makefile | 15 +++++ arch/nds32/include/asm/Kbuild | 54 +++++++++++++++ arch/nds32/include/uapi/asm/Kbuild | 27 ++++++++ arch/nds32/kernel/Makefile | 23 +++++++ arch/nds32/kernel/vmlinux.lds.S | 70 +++++++++++++++++++ arch/nds32/mm/Makefile | 7 ++ 9 files changed, 500 insertions(+) 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/include/asm/Kbuild create mode 100644 arch/nds32/include/uapi/asm/Kbuild create mode 100644 arch/nds32/kernel/Makefile create mode 100644 arch/nds32/kernel/vmlinux.lds.S create mode 100644 arch/nds32/mm/Makefile diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig new file mode 100644 index 0000000..444fc72a --- /dev/null +++ b/arch/nds32/Kconfig @@ -0,0 +1,107 @@ +# +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.txt. +# + +config NDS32 + def_bool y + select ARCH_HAS_RAW_COPY_USER + select ARCH_WANT_FRAME_POINTERS if FTRACE + select ARCH_WANT_IPC_PARSE_VERSION + select CLKSRC_MMIO + select CLONE_BACKWARDS + select TIMER_OF + select FRAME_POINTER + select GENERIC_ATOMIC64 + select GENERIC_CPU_DEVICES + select GENERIC_CLOCKEVENTS + select GENERIC_IRQ_CHIP + select GENERIC_IRQ_PROBE + select GENERIC_IRQ_SHOW + select GENERIC_STRNCPY_FROM_USER + select GENERIC_STRNLEN_USER + select GENERIC_TIME_VSYSCALL + select HANDLE_DOMAIN_IRQ + select HAVE_ARCH_TRACEHOOK + select HAVE_DEBUG_KMEMLEAK + select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP + select HAVE_REGS_AND_STACK_ACCESS_API + select IRQ_DOMAIN + select LOCKDEP_SUPPORT + select MODULES_USE_ELF_RELA + select OF + select OF_EARLY_FLATTREE + select NO_IOPORT_MAP + select RTC_LIB + select THREAD_INFO_IN_TASK + help + Andes(nds32) Linux support. + +config GENERIC_CALIBRATE_DELAY + def_bool n + +config GENERIC_CSUM + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_LOCKBREAK + def_bool y + depends on PREEMPT + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config TRACE_IRQFLAGS_SUPPORT + def_bool y + +config STACKTRACE_SUPPORT + def_bool y + +config FIX_EARLYCON_MEM + def_bool y + +config PGTABLE_LEVELS + default 2 + +source "init/Kconfig" + +menu "System Type" +source "arch/nds32/Kconfig.cpu" +config NR_CPUS + int + default 1 + +config MMU + def_bool y + +config NDS32_BUILTIN_DTB + string "Builtin DTB" + default "" + help + User can use it to specify the dts of the SoC +endmenu + +menu "Kernel Features" +source "kernel/Kconfig.preempt" +source "mm/Kconfig" +source "kernel/Kconfig.hz" +endmenu + +menu "Executable file formats" +source "fs/Kconfig.binfmt" +endmenu + +source "net/Kconfig" +source "drivers/Kconfig" +source "fs/Kconfig" + +menu "Kernel hacking" +source "lib/Kconfig.debug" +endmenu + +source "security/Kconfig" +source "crypto/Kconfig" +source "lib/Kconfig" diff --git a/arch/nds32/Kconfig.cpu b/arch/nds32/Kconfig.cpu new file mode 100644 index 0000000..6b4013f --- /dev/null +++ b/arch/nds32/Kconfig.cpu @@ -0,0 +1,131 @@ +comment "Processor Features" + +config CPU_BIG_ENDIAN + bool "Big endian" + def_bool n + +config CPU_LITTLE_ENDIAN + bool "Little endian" + def_bool y + +config HWZOL + bool "hardware zero overhead loop support" + default y + help + A set of Zero-Overhead Loop mechanism is provided to reduce the + instruction fetch and execution overhead of loop-control instructions. + It will save 3 registers($LB, $LC, $LE) for context saving if say Y. + You don't need to save these registers if you can make sure your user + program doesn't use these registers. + + If unsure, say N. + +config CPU_CACHE_NONALIASING + bool "Non-aliasing cache" + help + If this CPU is using VIPT data cache and its cache way size is larger + than page size, say N. If it is using PIPT data cache, say Y. + + If unsure, say Y. + +choice + prompt "Paging -- page size " + default ANDES_PAGE_SIZE_4KB +config ANDES_PAGE_SIZE_4KB + bool "use 4KB page size" +config ANDES_PAGE_SIZE_8KB + bool "use 8KB page size" +endchoice + +config CPU_ICACHE_DISABLE + bool "Disable I-Cache" + help + Say Y here to disable the processor instruction cache. Unless + you have a reason not to or are unsure, say N. + +config CPU_DCACHE_DISABLE + bool "Disable D-Cache" + help + Say Y here to disable the processor data cache. Unless + you have a reason not to or are unsure, say N. + +config CPU_DCACHE_WRITETHROUGH + bool "Force write through D-cache" + depends on !CPU_DCACHE_DISABLE + help + Say Y here to use the data cache in writethrough mode. Unless you + specifically require this or are unsure, say N. + +config WBNA + bool "WBNA" + default n + help + Say Y here to enable write-back memory with no-write-allocation policy. + +config ALIGNMENT_TRAP + bool "Kernel support unaligned access handling" + depends on PROC_FS + default n + help + Andes processors cannot fetch/store information which is not + naturally aligned on the bus, i.e., a 4 byte fetch must start at an + address divisible by 4. On 32-bit Andes processors, these non-aligned + fetch/store instructions will be emulated in software if you say + here, which has a severe performance impact. This is necessary for + correct operation of some network protocols. With an IP-only + configuration it is safe to say N, otherwise say Y. + +config HIGHMEM + bool "High Memory Support" + depends on MMU && CPU_CACHE_NONALIASING + help + The address space of Andes processors is only 4 Gigabytes large + and it has to accommodate user address space, kernel address + space as well as some memory mapped IO. That means that, if you + have a large amount of physical memory and/or IO, not all of the + memory can be "permanently mapped" by the kernel. The physical + memory that is not permanently mapped is called "high memory". + + Depending on the selected kernel/user memory split, minimum + vmalloc space and actual amount of RAM, you may not need this + option which should result in a slightly faster kernel. + + If unsure, say N. + +config CACHE_L2 + bool "Support L2 cache" + default y + help + Say Y here to enable L2 cache if your SoC are integrated with L2CC. + If unsure, say N. + +menu "Memory configuration" + +choice + prompt "Memory split" + depends on MMU + default VMSPLIT_3G + help + Select the desired split between kernel and user memory. + + If you are not absolutely sure what you are doing, leave this + option alone! + + config VMSPLIT_3G + bool "3G/1G user/kernel split" + config VMSPLIT_3G_OPT + bool "3G/1G user/kernel split (for full 1G low memory)" + config VMSPLIT_2G + bool "2G/2G user/kernel split" + config VMSPLIT_1G + bool "1G/3G user/kernel split" +endchoice + +config PAGE_OFFSET + hex + default 0x40000000 if VMSPLIT_1G + default 0x80000000 if VMSPLIT_2G + default 0xB0000000 if VMSPLIT_3G_OPT + default 0xC0000000 + +endmenu diff --git a/arch/nds32/Makefile b/arch/nds32/Makefile new file mode 100644 index 0000000..54b4de9 --- /dev/null +++ b/arch/nds32/Makefile @@ -0,0 +1,66 @@ +LDFLAGS_vmlinux := --no-undefined -X +OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment -S + +KBUILD_DEFCONFIG := defconfig + +comma = , + +KBUILD_CFLAGS +=-mno-sched-prolog-epilog -mcmodel=large + +KBUILD_CFLAGS +=$(arch-y) $(tune-y) +KBUILD_AFLAGS +=$(arch-y) $(tune-y) + +#Default value +head-y := arch/nds32/kernel/head.o +textaddr-y := $(CONFIG_PAGE_OFFSET)+0xc000 + +TEXTADDR := $(textaddr-y) + +export TEXTADDR + + +# If we have a machine-specific directory, then include it in the build. +core-y += arch/nds32/kernel/ arch/nds32/mm/ +libs-y += arch/nds32/lib/ +LIBGCC_PATH := \ + $(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name) +libs-y += $(LIBGCC_PATH) + +ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""' +BUILTIN_DTB := y +else +BUILTIN_DTB := n +endif + +ifdef CONFIG_CPU_LITTLE_ENDIAN +KBUILD_CFLAGS += -EL +else +KBUILD_CFLAGS += -EB +endif + +boot := arch/nds32/boot +core-$(BUILTIN_DTB) += $(boot)/dts/ + +.PHONY: FORCE + +Image: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + + +PHONY += vdso_install +vdso_install: + $(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso $@ + +prepare: vdso_prepare +vdso_prepare: prepare0 + $(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso include/generated/vdso-offsets.h + +CLEAN_FILES += include/asm-nds32/constants.h* + +# We use MRPROPER_FILES and CLEAN_FILES now +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + +define archhelp + echo ' Image - kernel image (arch/$(ARCH)/boot/Image)' +endef diff --git a/arch/nds32/boot/Makefile b/arch/nds32/boot/Makefile new file mode 100644 index 0000000..3f9b86f --- /dev/null +++ b/arch/nds32/boot/Makefile @@ -0,0 +1,15 @@ +targets := Image Image.gz + +$(obj)/Image: vmlinux FORCE + $(call if_changed,objcopy) + +$(obj)/Image.gz: $(obj)/Image FORCE + $(call if_changed,gzip) + +install: $(obj)/Image + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(obj)/Image System.map "$(INSTALL_PATH)" + +zinstall: $(obj)/Image.gz + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(obj)/Image.gz System.map "$(INSTALL_PATH)" diff --git a/arch/nds32/include/asm/Kbuild b/arch/nds32/include/asm/Kbuild new file mode 100644 index 0000000..414ca9d --- /dev/null +++ b/arch/nds32/include/asm/Kbuild @@ -0,0 +1,54 @@ +generic-y += asm-offsets.h +generic-y += atomic.h +generic-y += barrier.h +generic-y += bitops.h +generic-y += bitsperlong.h +generic-y += bug.h +generic-y += bugs.h +generic-y += checksum.h +generic-y += clkdev.h +generic-y += cmpxchg.h +generic-y += cmpxchg-local.h +generic-y += cputime.h +generic-y += device.h +generic-y += div64.h +generic-y += dma.h +generic-y += emergency-restart.h +generic-y += errno.h +generic-y += exec.h +generic-y += fb.h +generic-y += fcntl.h +generic-y += ftrace.h +generic-y += gpio.h +generic-y += hardirq.h +generic-y += hw_irq.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += irq.h +generic-y += irq_regs.h +generic-y += irq_work.h +generic-y += kdebug.h +generic-y += kmap_types.h +generic-y += kprobes.h +generic-y += kvm_para.h +generic-y += limits.h +generic-y += local.h +generic-y += mm-arch-hooks.h +generic-y += mman.h +generic-y += parport.h +generic-y += pci.h +generic-y += percpu.h +generic-y += preempt.h +generic-y += sections.h +generic-y += segment.h +generic-y += serial.h +generic-y += shmbuf.h +generic-y += sizes.h +generic-y += stat.h +generic-y += switch_to.h +generic-y += timex.h +generic-y += topology.h +generic-y += trace_clock.h +generic-y += unaligned.h +generic-y += user.h +generic-y += word-at-a-time.h diff --git a/arch/nds32/include/uapi/asm/Kbuild b/arch/nds32/include/uapi/asm/Kbuild new file mode 100644 index 0000000..041e368 --- /dev/null +++ b/arch/nds32/include/uapi/asm/Kbuild @@ -0,0 +1,27 @@ +# UAPI Header export list +include include/uapi/asm-generic/Kbuild.asm + +generic-y += errno.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += ipcbuf.h +generic-y += shmbuf.h +generic-y += bitsperlong.h +generic-y += fcntl.h +generic-y += stat.h +generic-y += mman.h +generic-y += msgbuf.h +generic-y += poll.h +generic-y += posix_types.h +generic-y += resource.h +generic-y += sembuf.h +generic-y += setup.h +generic-y += siginfo.h +generic-y += socket.h +generic-y += sockios.h +generic-y += swab.h +generic-y += statfs.h +generic-y += termbits.h +generic-y += termios.h +generic-y += types.h +generic-y += ucontext.h diff --git a/arch/nds32/kernel/Makefile b/arch/nds32/kernel/Makefile new file mode 100644 index 0000000..4279274 --- /dev/null +++ b/arch/nds32/kernel/Makefile @@ -0,0 +1,23 @@ +# +# Makefile for the linux kernel. +# + +CPPFLAGS_vmlinux.lds := -DTEXTADDR=$(TEXTADDR) +AFLAGS_head.o := -DTEXTADDR=$(TEXTADDR) + +# Object file lists. + +obj-y := ex-entry.o ex-exit.o ex-scall.o irq.o \ + process.o ptrace.o setup.o signal.o \ + sys_nds32.o time.o traps.o cacheinfo.o \ + dma.o syscall_table.o vdso.o + +obj-$(CONFIG_MODULES) += nds32_ksyms.o module.o +obj-$(CONFIG_STACKTRACE) += stacktrace.o +obj-$(CONFIG_OF) += devtree.o +obj-$(CONFIG_CACHE_L2) += atl2c.o + +extra-y := head.o vmlinux.lds + + +obj-y += vdso/ diff --git a/arch/nds32/kernel/vmlinux.lds.S b/arch/nds32/kernel/vmlinux.lds.S new file mode 100644 index 0000000..2b1e55d --- /dev/null +++ b/arch/nds32/kernel/vmlinux.lds.S @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2005-2017 Andes Technology Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <asm/page.h> +#include <asm/thread_info.h> +#include <asm/cache.h> +#include <asm/memory.h> + +#define LOAD_OFFSET (PAGE_OFFSET - PHYS_OFFSET) +#include <asm-generic/vmlinux.lds.h> + +OUTPUT_ARCH(nds32) +ENTRY(_stext_lma) +jiffies = jiffies_64; + +SECTIONS +{ + _stext_lma = TEXTADDR - LOAD_OFFSET; + . = TEXTADDR; + __init_begin = .; + HEAD_TEXT_SECTION + INIT_TEXT_SECTION(PAGE_SIZE) + INIT_DATA_SECTION(16) + PERCPU_SECTION(L1_CACHE_BYTES) + __init_end = .; + + . = ALIGN(PAGE_SIZE); + _stext = .; + /* Real text segment */ + .text : AT(ADDR(.text) - LOAD_OFFSET) { + _text = .; /* Text and read-only data */ + TEXT_TEXT + SCHED_TEXT + CPUIDLE_TEXT + LOCK_TEXT + KPROBES_TEXT + IRQENTRY_TEXT + *(.fixup) + } + + _etext = .; /* End of text and rodata section */ + + _sdata = .; + RO_DATA_SECTION(PAGE_SIZE) + RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) + _edata = .; + + EXCEPTION_TABLE(16) + NOTES + BSS_SECTION(4, 4, 4) + _end = .; + + STABS_DEBUG + DWARF_DEBUG + + DISCARDS +} diff --git a/arch/nds32/mm/Makefile b/arch/nds32/mm/Makefile new file mode 100644 index 0000000..6b68558 --- /dev/null +++ b/arch/nds32/mm/Makefile @@ -0,0 +1,7 @@ +obj-y := extable.o tlb.o \ + fault.o init.o ioremap.o mmap.o \ + mm-nds32.o cacheflush.o proc.o + +obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o +obj-$(CONFIG_HIGHMEM) += highmem.o +CFLAGS_proc-n13.o += -fomit-frame-pointer -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
