Message-Id: <c15b1fce07d0a19616026dfb927bfcbd88102b12.1521399976.git.ren_guo@c-sky.com>
Date:   Mon, 19 Mar 2018 03:51:37 +0800
From:   Guo Ren <ren_guo@...ky.com>
To:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, daniel.lezcano@...aro.org,
        jason@...edaemon.net, arnd@...db.de
Cc:     c-sky_gcc_upstream@...ky.com, gnu-csky@...tor.com,
        thomas.petazzoni@...tlin.com, wbx@...ibc-ng.org,
        Guo Ren <ren_guo@...ky.com>
Subject: [PATCH 15/19] csky: Build infrastructure

Signed-off-by: Guo Ren <ren_guo@...ky.com>
---
 arch/csky/Kconfig                 | 203 ++++++++++++++++++++++++++++++++++++++
 arch/csky/Kconfig.debug           |  22 +++++
 arch/csky/Makefile                |  92 +++++++++++++++++
 arch/csky/abiv1/Makefile          |   8 ++
 arch/csky/abiv2/Makefile          |   3 +
 arch/csky/boot/Makefile           |  25 +++++
 arch/csky/boot/dts/Makefile       |  14 +++
 arch/csky/include/asm/Kbuild      |  71 +++++++++++++
 arch/csky/include/uapi/asm/Kbuild |  30 ++++++
 arch/csky/kernel/Makefile         |   8 ++
 arch/csky/kernel/vmlinux.lds.S    |  67 +++++++++++++
 arch/csky/lib/Makefile            |   1 +
 arch/csky/mm/Makefile             |  13 +++
 arch/csky/oprofile/Makefile       |  13 +++
 14 files changed, 570 insertions(+)
 create mode 100644 arch/csky/Kconfig
 create mode 100644 arch/csky/Kconfig.debug
 create mode 100644 arch/csky/Makefile
 create mode 100644 arch/csky/abiv1/Makefile
 create mode 100644 arch/csky/abiv2/Makefile
 create mode 100644 arch/csky/boot/Makefile
 create mode 100644 arch/csky/boot/dts/Makefile
 create mode 100644 arch/csky/include/asm/Kbuild
 create mode 100644 arch/csky/include/uapi/asm/Kbuild
 create mode 100644 arch/csky/kernel/Makefile
 create mode 100644 arch/csky/kernel/vmlinux.lds.S
 create mode 100644 arch/csky/lib/Makefile
 create mode 100644 arch/csky/mm/Makefile
 create mode 100644 arch/csky/oprofile/Makefile

diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
new file mode 100644
index 0000000..694c1f8
--- /dev/null
+++ b/arch/csky/Kconfig
@@ -0,0 +1,203 @@
+config CSKY
+	bool
+	default y
+	select ARCH_USE_BUILTIN_BSWAP
+	select ARCH_WANT_IPC_PARSE_VERSION
+	select COMMON_CLK
+	select CLKSRC_MMIO
+	select CLKSRC_OF
+	select DW_APB_TIMER_OF
+	select GENERIC_ATOMIC64
+	select GENERIC_CLOCKEVENTS
+	select GENERIC_CPU_DEVICES
+	select GENERIC_IRQ_CHIP
+	select GENERIC_IRQ_SHOW
+	select GENERIC_SCHED_CLOCK
+	select HAVE_GENERIC_DMA_COHERENT
+	select HAVE_KERNEL_GZIP
+	select HAVE_KERNEL_LZO
+	select HAVE_KERNEL_LZMA
+	select HAVE_OPROFILE
+	select HAVE_PERF_EVENTS
+	select HAVE_C_RECORDMCOUNT
+	select HAVE_KPROBES
+	select HAVE_KRETPROBES
+	select HAVE_DMA_API_DEBUG
+	select HAVE_MEMBLOCK
+	select MAY_HAVE_SPARSE_IRQ
+	select MODULES_USE_ELF_REL if MODULES
+	select MODULES_USE_ELF_RELA if MODULES
+	select NO_BOOTMEM
+	select OF
+	select OF_EARLY_FLATTREE
+	select OF_RESERVED_MEM
+	select OLD_SIGACTION
+	select OLD_SIGSUSPEND3
+	select PERF_USE_VMALLOC
+	select RTC_LIB
+	select USB_ARCH_HAS_EHCI
+	select USB_ARCH_HAS_OHCI
+
+config CPU_HAS_CACHEV2
+	bool
+	default n
+
+config CPU_HAS_HILO
+	bool
+	default n
+
+config CPU_HAS_TLBI
+	bool
+	default n
+
+config CPU_NEED_TLBSYNC
+	bool
+	default n
+
+config CPU_NEED_SOFTALIGN
+	bool
+	default n
+
+config HIGHMEM
+	bool
+	default n
+
+config HZ
+	int
+	default 100
+
+config GENERIC_CSUM
+	bool
+	default y
+
+config GENERIC_CALIBRATE_DELAY
+	bool
+	default y
+
+config GENERIC_HWEIGHT
+	bool
+	default y
+
+config MMU
+	bool
+	default y
+
+config NR_CPUS
+	int
+	default "1"
+
+config RWSEM_GENERIC_SPINLOCK
+	bool
+	default y
+
+config TIME_LOW_RES
+	bool
+	default y
+
+config TRACE_IRQFLAGS_SUPPORT
+	bool
+	default y
+
+source "init/Kconfig"
+
+source "kernel/Kconfig.freezer"
+
+menu "Processor type and features"
+
+comment "Processor type"
+
+choice
+        prompt "CPU MODEL"
+        default CPU_CK610
+
+config CPU_CK610
+        bool "CSKY CPU ck610"
+	select CPU_NEED_TLBSYNC
+	select CPU_NEED_SOFTALIGN
+
+config CPU_CK810
+        bool "CSKY CPU ck810"
+	select HIGHMEM
+	select CPU_HAS_HILO
+	select CPU_NEED_TLBSYNC
+
+config CPU_CK807
+        bool "CSKY CPU ck807"
+	select HIGHMEM
+	select CPU_HAS_HILO
+
+config CPU_CK860
+        bool "CSKY CPU ck860"
+	select HIGHMEM
+	select CPU_HAS_TLBI
+	select CPU_HAS_CACHEV2
+endchoice
+
+config CPU_TLB_SIZE
+	int
+	default "128"	if(CPU_CK610 || CPU_CK807 || CPU_CK810)
+	default "1024"	if(CPU_CK860)
+
+config L1_CACHE_SHIFT
+	int
+	default "4"	if(CPU_CK610)
+	default "5"	if(CPU_CK807 || CPU_CK810)
+	default "6"	if(CPU_CK860)
+
+menuconfig CPU_HAS_FPU
+	bool "CPU has FPU coprocessor"
+	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
+	default n
+	help
+	  Floating-Point Coprocessor (FPC) is a coprocessor of CK serial processor.
+	  The function of FPC is to provide low-cost high-speed float point computation,
+	  which is full compliance with ANSI/IEEE Std 754, IEEE Standard for Binary
+	  Floating-Point Arithmetic.
+
+comment "*****System type*****"
+
+config SSEG0_BASE
+	hex "Direct mapping physical address"
+	default 0x0
+	help
+	  There are MSAx regs can be used to change the base physical address
+	  of direct mapping. The default base physical address is 0x0.
+
+config RAM_BASE
+	hex "DRAM base address offset from SSEG0_BASE, it must be the same with dts memory."
+	default 0x08000000
+
+config CSKY_NR_IRQS
+	int "NR_IRQS to max virtual interrupt numbers of the whole system"
+	range 64 8192
+	default "128"
+endmenu
+
+menu "Power management options"
+
+source "kernel/power/Kconfig"
+
+config ARCH_SUSPEND_POSSIBLE
+	bool y
+	default y
+endmenu
+
+source "mm/Kconfig"
+
+source "fs/Kconfig.binfmt"
+
+source "kernel/Kconfig.preempt"
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/csky/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
diff --git a/arch/csky/Kconfig.debug b/arch/csky/Kconfig.debug
new file mode 100644
index 0000000..c202cfc
--- /dev/null
+++ b/arch/csky/Kconfig.debug
@@ -0,0 +1,22 @@
+menu "Kernel hacking"
+
+config CSKY_DEBUG_INFO
+	bool "Compile the kernel with debug info, just add -g"
+	depends on !DEBUG_INFO
+	help
+	  DEBUG_INFO and COMPILE_TEST is conflict, so we provide
+	  another way to support -g.
+	  Some drivers eg: DW_MMC need COMPILE_TEST for new cpu
+	  arch :(
+
+config CSKY_BUILTIN_DTB
+	bool "Use kernel builtin dtb"
+	default n
+
+config CSKY_BUILTIN_DTB_NAME
+	string "kernel builtin dtb name"
+	depends on CSKY_BUILTIN_DTB
+
+source "lib/Kconfig.debug"
+
+endmenu
diff --git a/arch/csky/Makefile b/arch/csky/Makefile
new file mode 100644
index 0000000..3089c46
--- /dev/null
+++ b/arch/csky/Makefile
@@ -0,0 +1,92 @@
+OBJCOPYFLAGS	:=-O binary
+GZFLAGS		:=-9
+
+ifdef CONFIG_CPU_HAS_FPU
+FPUEXT =f
+endif
+
+ifdef CONFIG_CPU_CK610
+CPUTYPE	= ck610
+CSKYABI	= abiv1
+endif
+
+ifdef CONFIG_CPU_CK810
+CPUTYPE = ck810$(FPUEXT)
+CSKYABI	= abiv2
+endif
+
+ifdef CONFIG_CPU_CK807
+CPUTYPE = ck807$(FPUEXT)
+CSKYABI	= abiv2
+endif
+
+ifdef CONFIG_CPU_CK860
+CPUTYPE = ck860$(FPUEXT)
+CSKYABI	= abiv2
+endif
+
+ifeq ($(VERSION)_$(PATCHLEVEL), 4_9)
+COMPAT_KERNEL_4_9 = -DCOMPAT_KERNEL_4_9
+endif
+
+KBUILD_CFLAGS +=	-ffreestanding \
+			-fno-tree-dse \
+			-pipe \
+			-Wno-uninitialized \
+			$(COMPAT_KERNEL_4_9) \
+			-mcpu=$(CPUTYPE) \
+			-DCSKYCPU_DEF_NAME=\"$(CPUTYPE)\"
+
+ifeq ($(CONFIG_CSKY_DEBUG_INFO),y)
+KBUILD_CFLAGS += -g
+endif
+
+abidirs := $(patsubst %,arch/csky/%/,$(CSKYABI))
+
+KBUILD_CFLAGS += $(patsubst %,-I$(srctree)/%inc,$(abidirs))
+
+KBUILD_CPPFLAGS += -mlittle-endian
+LDFLAGS += -EL
+
+KBUILD_AFLAGS += $(KBUILD_CFLAGS)
+
+head-y := arch/csky/kernel/head.o
+
+core-y += arch/csky/kernel/
+core-y += arch/csky/mm/
+core-y += arch/csky/$(CSKYABI)/
+
+libs-y += arch/csky/lib/ \
+	$(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)
+
+ifdef CONFIG_CSKY_BUILTIN_DTB
+core-y				+= arch/csky/boot/dts/
+endif
+
+drivers-$(CONFIG_OPROFILE)	+= arch/csky/oprofile/
+
+all: zImage
+
+boot	:= arch/csky/boot
+
+dtbs: scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts
+
+%.dtb %.dtb.S %.dtb.o: scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
+
+zImage Image uImage: vmlinux dtbs
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+archmrproper:
+
+archclean:
+	$(Q)$(MAKE) $(clean)=$(boot)
+	rm -rf arch/csky/include/generated
+
+define archhelp
+  echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
+  echo  '  Image        - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
+  echo  '  uImage       - U-Boot wrapped zImage'
+endef
+
diff --git a/arch/csky/abiv1/Makefile b/arch/csky/abiv1/Makefile
new file mode 100644
index 0000000..d2cf365
--- /dev/null
+++ b/arch/csky/abiv1/Makefile
@@ -0,0 +1,8 @@
+obj-y +=	src/bswapdi.o
+obj-y +=	src/bswapsi.o
+obj-y +=	src/cacheflush.o
+obj-y +=	src/memcpy.o
+obj-y +=	src/mmap.o
+
+obj-$(CONFIG_CPU_NEED_SOFTALIGN) +=	src/alignment.o
+
diff --git a/arch/csky/abiv2/Makefile b/arch/csky/abiv2/Makefile
new file mode 100644
index 0000000..97f3780
--- /dev/null
+++ b/arch/csky/abiv2/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_CPU_HAS_FPU)	+= src/fpu.o
+obj-y				+= src/memcpy.o
+
diff --git a/arch/csky/boot/Makefile b/arch/csky/boot/Makefile
new file mode 100644
index 0000000..c3301a8
--- /dev/null
+++ b/arch/csky/boot/Makefile
@@ -0,0 +1,25 @@
+targets := Image zImage uImage
+targets += $(dtb-y)
+
+$(obj)/Image: vmlinux FORCE
+	$(call if_changed,objcopy)
+	@echo '  Kernel: $@ is ready'
+
+compress-$(CONFIG_KERNEL_GZIP) = gzip
+compress-$(CONFIG_KERNEL_LZO)  = lzo
+compress-$(CONFIG_KERNEL_LZMA) = lzma
+compress-$(CONFIG_KERNEL_XZ)   = xzkern
+compress-$(CONFIG_KERNEL_LZ4)  = lz4
+
+$(obj)/zImage:  $(obj)/Image FORCE
+	$(call if_changed,$(compress-y))
+	@echo '  Kernel: $@ is ready'
+
+UIMAGE_ARCH		= sandbox
+UIMAGE_COMPRESSION	= $(compress-y)
+UIMAGE_LOADADDR		= $(shell $(NM) vmlinux | awk '$$NF == "_start" {print $$1}')
+
+$(obj)/uImage: $(obj)/zImage
+	$(call if_changed,uimage)
+	@echo 'Image: $@ is ready'
+
diff --git a/arch/csky/boot/dts/Makefile b/arch/csky/boot/dts/Makefile
new file mode 100644
index 0000000..9afc954
--- /dev/null
+++ b/arch/csky/boot/dts/Makefile
@@ -0,0 +1,14 @@
+dtstree	:= $(srctree)/$(src)
+
+ifdef CONFIG_CSKY_BUILTIN_DTB
+builtindtb-y := $(patsubst "%",%,$(CONFIG_CSKY_BUILTIN_DTB_NAME))
+dtb-y += $(builtindtb-y).dtb
+obj-y += $(builtindtb-y).dtb.o
+.SECONDARY: $(obj)/$(builtindtb-y).dtb.S
+else
+dtb-y := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+endif
+
+always += $(dtb-y)
+clean-files += *.dtb *.dtb.S
+
diff --git a/arch/csky/include/asm/Kbuild b/arch/csky/include/asm/Kbuild
new file mode 100644
index 0000000..58b92d8
--- /dev/null
+++ b/arch/csky/include/asm/Kbuild
@@ -0,0 +1,71 @@
+generic-y += asm-offsets.h
+generic-y += atomic.h
+generic-y += auxvec.h
+generic-y += bitsperlong.h
+generic-y += bug.h
+generic-y += bugs.h
+generic-y += clkdev.h
+generic-y += cmpxchg.h
+generic-y += cputime.h
+generic-y += current.h
+generic-y += delay.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 += ftrace.h
+generic-y += futex.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_regs.h
+generic-y += ipcbuf.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 += linkage.h
+generic-y += local.h
+generic-y += local64.h
+generic-y += mman.h
+generic-y += mm-arch-hooks.h
+generic-y += module.h
+generic-y += msgbuf.h
+generic-y += mutex.h
+generic-y += param.h
+generic-y += pci.h
+generic-y += percpu.h
+generic-y += posix_types.h
+generic-y += poll.h
+generic-y += preempt.h
+generic-y += resource.h
+generic-y += scatterlist.h
+generic-y += sections.h
+generic-y += sembuf.h
+generic-y += serial.h
+generic-y += setup.h
+generic-y += shmbuf.h
+generic-y += shm.h
+generic-y += siginfo.h
+generic-y += sizes.h
+generic-y += socket.h
+generic-y += sockios.h
+generic-y += statfs.h
+generic-y += switch_to.h
+generic-y += termbits.h
+generic-y += termios.h
+generic-y += timex.h
+generic-y += topology.h
+generic-y += trace_clock.h
+generic-y += types.h
+generic-y += ucontext.h
+generic-y += unaligned.h
+generic-y += vga.h
+generic-y += vmlinux.lds.h
+generic-y += word-at-a-time.h
diff --git a/arch/csky/include/uapi/asm/Kbuild b/arch/csky/include/uapi/asm/Kbuild
new file mode 100644
index 0000000..9668182
--- /dev/null
+++ b/arch/csky/include/uapi/asm/Kbuild
@@ -0,0 +1,30 @@
+include include/uapi/asm-generic/Kbuild.asm
+
+header-y += cachectl.h
+header-y += stat.h
+
+generic-y += auxvec.h
+generic-y += param.h
+generic-y += bpf_perf_event.h
+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 += 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 += siginfo.h
+generic-y += socket.h
+generic-y += sockios.h
+generic-y += statfs.h
+generic-y += setup.h
+generic-y += swab.h
+generic-y += termbits.h
+generic-y += termios.h
+generic-y += types.h
+generic-y += ucontext.h
diff --git a/arch/csky/kernel/Makefile b/arch/csky/kernel/Makefile
new file mode 100644
index 0000000..8df5fd9
--- /dev/null
+++ b/arch/csky/kernel/Makefile
@@ -0,0 +1,8 @@
+extra-y := head.o vmlinux.lds
+
+obj-y += entry.o atomic.o signal.o traps.o irq.o time.o vdso.o \
+	 power.o syscall.o platform.o syscall_table.o setup.o \
+	 cskyksyms.o process.o cpu-probe.o ptrace.o dumpstack.o
+
+obj-$(CONFIG_MODULES) += module.o
+
diff --git a/arch/csky/kernel/vmlinux.lds.S b/arch/csky/kernel/vmlinux.lds.S
new file mode 100644
index 0000000..406e6f4
--- /dev/null
+++ b/arch/csky/kernel/vmlinux.lds.S
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+#include <asm/vmlinux.lds.h>
+#include <asm/page.h>
+
+OUTPUT_ARCH(csky)
+ENTRY(_start)
+
+#ifndef __cskyBE__
+jiffies = jiffies_64;
+#else
+jiffies = jiffies_64 + 4;
+#endif
+
+#define VBR_BASE \
+	. = ALIGN(1024); \
+	VMLINUX_SYMBOL(vec_base) = .; \
+	. += 512;
+
+SECTIONS
+{
+	. = PAGE_OFFSET + CONFIG_RAM_BASE;
+	_text = .;
+	HEAD_TEXT_SECTION
+
+	_stext = .;
+	.text : AT(ADDR(.text) - LOAD_OFFSET) {
+		IRQENTRY_TEXT
+		SOFTIRQENTRY_TEXT
+		TEXT_TEXT
+		SCHED_TEXT
+		CPUIDLE_TEXT
+		LOCK_TEXT
+		KPROBES_TEXT
+		*(.fixup)
+		*(.gnu.warning)
+	} = 0
+	_etext = .;
+
+	/* __init_begin __init_end must be page aligned for free_initmem */
+	. = ALIGN(PAGE_SIZE);
+	__init_begin = .;
+
+	INIT_TEXT_SECTION(PAGE_SIZE)
+	INIT_DATA_SECTION(PAGE_SIZE)
+	PERCPU_SECTION(L1_CACHE_BYTES)
+
+	. = ALIGN(PAGE_SIZE);
+	__init_end = .;
+
+	_sdata = .;
+	RO_DATA_SECTION(PAGE_SIZE)
+	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	_edata = .;
+
+	NOTES
+	EXCEPTION_TABLE(L1_CACHE_BYTES)
+	BSS_SECTION(L1_CACHE_BYTES, PAGE_SIZE, L1_CACHE_BYTES)
+	VBR_BASE
+	_end = . ;
+
+	STABS_DEBUG
+	DWARF_DEBUG
+
+	DISCARDS
+}
+
diff --git a/arch/csky/lib/Makefile b/arch/csky/lib/Makefile
new file mode 100644
index 0000000..02aefbc
--- /dev/null
+++ b/arch/csky/lib/Makefile
@@ -0,0 +1 @@
+lib-y  := memset.o usercopy.o delay.o
diff --git a/arch/csky/mm/Makefile b/arch/csky/mm/Makefile
new file mode 100644
index 0000000..c870eb3
--- /dev/null
+++ b/arch/csky/mm/Makefile
@@ -0,0 +1,13 @@
+ifeq ($(CONFIG_CPU_HAS_CACHEV2),y)
+obj-y +=			cachev2.o
+else
+obj-y +=			cachev1.o
+endif
+
+obj-y +=			dma-mapping.o
+obj-y +=			fault.o
+obj-$(CONFIG_HIGHMEM) +=	highmem.o
+obj-y +=			init.o
+obj-y +=			ioremap.o
+obj-y +=			syscache.o
+obj-y +=			tlb.o
diff --git a/arch/csky/oprofile/Makefile b/arch/csky/oprofile/Makefile
new file mode 100644
index 0000000..8b93284
--- /dev/null
+++ b/arch/csky/oprofile/Makefile
@@ -0,0 +1,13 @@
+obj-$(CONFIG_OPROFILE) += oprofile.o
+
+DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \
+		oprof.o cpu_buffer.o buffer_sync.o \
+		event_buffer.o oprofile_files.o \
+		oprofilefs.o oprofile_stats.o \
+		timer_int.o )
+
+ifeq ($(CONFIG_HW_PERF_EVENTS),y)
+DRIVER_OBJS += $(addprefix ../../../drivers/oprofile/, oprofile_perf.o)
+endif
+
+oprofile-y := $(DRIVER_OBJS) init.o
-- 
2.7.4

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