Re: [PATCH] MIPS: Add basic support for Loongson1B (UPDATED)

From: Kelvin Cheung
Date: Sat Sep 24 2011 - 02:21:34 EST

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2011/9/18, wu zhangjin <wuzhangjin@xxxxxxxxx>:
> On Thu, Sep 15, 2011 at 5:53 PM, <keguang.zhang@xxxxxxxxx> wrote:
>> From: Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>>
>> This patch adds basic support for Loongson1B
>> including serial, timer and interrupt handler.
>>
>> Loongson 1B is a 32-bit SoC designed by Institute of
>> Computing Technology (ICT), Chinese Academy of Sciences (CAS),
>> which implements the MIPS32 release 2 instruction set.
>>
>> Signed-off-by: Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> ---
>> arch/mips/Kbuild.platforms | 1 +
>> arch/mips/Kconfig | 31 +
>> arch/mips/configs/ls1b_defconfig | 830
>> ++++++++++++++++++++++
>> arch/mips/include/asm/cpu.h | 3 +-
>> arch/mips/include/asm/mach-loongson1/irq.h | 70 ++
>> arch/mips/include/asm/mach-loongson1/loongson1.h | 48 ++
>> arch/mips/include/asm/mach-loongson1/platform.h | 20 +
>> arch/mips/include/asm/mach-loongson1/prom.h | 24 +
>> arch/mips/include/asm/mach-loongson1/regs-clk.h | 32 +
>> arch/mips/include/asm/mach-loongson1/regs-intc.h | 24 +
>> arch/mips/include/asm/mach-loongson1/regs-wdt.h | 21 +
>> arch/mips/include/asm/mach-loongson1/war.h | 25 +
>> arch/mips/include/asm/module.h | 2 +
>> arch/mips/kernel/cpu-probe.c | 15 +
>> arch/mips/kernel/perf_event_mipsxx.c | 6 +
>> arch/mips/kernel/traps.c | 1 +
>> arch/mips/loongson1/Kconfig | 29 +
>> arch/mips/loongson1/Makefile | 11 +
>> arch/mips/loongson1/Platform | 7 +
>> arch/mips/loongson1/common/Makefile | 5 +
>> arch/mips/loongson1/common/clock.c | 165 +++++
>> arch/mips/loongson1/common/irq.c | 135 ++++
>> arch/mips/loongson1/common/platform.c | 50 ++
>> arch/mips/loongson1/common/prom.c | 89 +++
>> arch/mips/loongson1/common/reset.c | 46 ++
>> arch/mips/loongson1/common/setup.c | 29 +
>> arch/mips/loongson1/ls1b/Makefile | 5 +
>> arch/mips/loongson1/ls1b/board.c | 30 +
>> arch/mips/oprofile/common.c | 1 +
>> arch/mips/oprofile/op_model_mipsxx.c | 4 +
>> 30 files changed, 1758 insertions(+), 1 deletions(-)
>> create mode 100644 arch/mips/configs/ls1b_defconfig
>> create mode 100644 arch/mips/include/asm/mach-loongson1/irq.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/loongson1.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/platform.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/prom.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/regs-clk.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/regs-intc.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/regs-wdt.h
>> create mode 100644 arch/mips/include/asm/mach-loongson1/war.h
>> create mode 100644 arch/mips/loongson1/Kconfig
>> create mode 100644 arch/mips/loongson1/Makefile
>> create mode 100644 arch/mips/loongson1/Platform
>> create mode 100644 arch/mips/loongson1/common/Makefile
>> create mode 100644 arch/mips/loongson1/common/clock.c
>> create mode 100644 arch/mips/loongson1/common/irq.c
>> create mode 100644 arch/mips/loongson1/common/platform.c
>> create mode 100644 arch/mips/loongson1/common/prom.c
>> create mode 100644 arch/mips/loongson1/common/reset.c
>> create mode 100644 arch/mips/loongson1/common/setup.c
>> create mode 100644 arch/mips/loongson1/ls1b/Makefile
>> create mode 100644 arch/mips/loongson1/ls1b/board.c
>>
>> diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
>> index 5ce8029..d64786d 100644
>> --- a/arch/mips/Kbuild.platforms
>> +++ b/arch/mips/Kbuild.platforms
>> @@ -14,6 +14,7 @@ platforms += jz4740
>> platforms += lantiq
>> platforms += lasat
>> platforms += loongson
>> +platforms += loongson1
>> platforms += mipssim
>> platforms += mti-malta
>> platforms += netlogic
>> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
>> index b122adc..d693f48 100644
>> --- a/arch/mips/Kconfig
>> +++ b/arch/mips/Kconfig
>> @@ -259,6 +259,17 @@ config MACH_LOONGSON
>> Chinese Academy of Sciences (CAS) in the People's Republic
>> of China. The chief architect is Professor Weiwu Hu.
>>
>> +config MACH_LOONGSON1
>> + bool "Loongson1 family of machines"
>> + select SYS_SUPPORTS_ZBOOT
>> + help
>> + This enables the support of Loongson1 family of machines.
>> +
>> + Loongson1 is a family of 32-bit MIPS-compatible SoCs.
>> + developed at Institute of Computing Technology (ICT),
>> + Chinese Academy of Sciences (CAS) in the People's Republic
>> + of China.
>> +
>> config MIPS_MALTA
>> bool "MIPS Malta board"
>> select ARCH_MAY_HAVE_PC_FDC
>> @@ -804,6 +815,7 @@ source "arch/mips/txx9/Kconfig"
>> source "arch/mips/vr41xx/Kconfig"
>> source "arch/mips/cavium-octeon/Kconfig"
>> source "arch/mips/loongson/Kconfig"
>> +source "arch/mips/loongson1/Kconfig"
>> source "arch/mips/netlogic/Kconfig"
>>
>> endmenu
>> @@ -1197,6 +1209,14 @@ config CPU_LOONGSON2F
>> have a similar programming interface with FPGA northbridge used
>> in
>> Loongson2E.
>>
>> +config CPU_LOONGSON1B
>> + bool "Loongson 1B"
>> + depends on SYS_HAS_CPU_LOONGSON1B
>> + select CPU_LOONGSON1
>> + help
>> + The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> release 2
>> + instruction set.
>> +
>> config CPU_MIPS32_R1
>> bool "MIPS32 Release 1"
>> depends on SYS_HAS_CPU_MIPS32_R1
>> @@ -1525,6 +1545,14 @@ config CPU_LOONGSON2
>> select CPU_SUPPORTS_64BIT_KERNEL
>> select CPU_SUPPORTS_HIGHMEM
>>
>> +config CPU_LOONGSON1
>> + bool
>> + select CPU_MIPS32
>> + select CPU_MIPSR2
>> + select CPU_HAS_PREFETCH
>> + select CPU_SUPPORTS_32BIT_KERNEL
>> + select CPU_SUPPORTS_HIGHMEM
>> +
>> config SYS_HAS_CPU_LOONGSON2E
>> bool
>>
>> @@ -1534,6 +1562,9 @@ config SYS_HAS_CPU_LOONGSON2F
>> select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> select CPU_SUPPORTS_UNCACHED_ACCELERATED
>>
>> +config SYS_HAS_CPU_LOONGSON1B
>> + bool
>> +
>> config SYS_HAS_CPU_MIPS32_R1
>> bool
>>
>> diff --git a/arch/mips/configs/ls1b_defconfig
>> b/arch/mips/configs/ls1b_defconfig
>> new file mode 100644
>> index 0000000..6463311
>> --- /dev/null
>> +++ b/arch/mips/configs/ls1b_defconfig
>> @@ -0,0 +1,830 @@
>> +#
>> +# Automatically generated make config: don't edit
>> +# Linux/mips 3.0.3 Kernel Configuration
>> +#
>> +CONFIG_MIPS=y
>> +
>> +#
>> +# Machine selection
>> +#
>> +# CONFIG_MIPS_ALCHEMY is not set
>> +# CONFIG_AR7 is not set
>> +# CONFIG_ATH79 is not set
>> +# CONFIG_BCM47XX is not set
>> +# CONFIG_BCM63XX is not set
>> +# CONFIG_MIPS_COBALT is not set
>> +# CONFIG_MACH_DECSTATION is not set
>> +# CONFIG_MACH_JAZZ is not set
>> +# CONFIG_MACH_JZ4740 is not set
>> +# CONFIG_LANTIQ is not set
>> +# CONFIG_LASAT is not set
>> +# CONFIG_MACH_LOONGSON is not set
>> +CONFIG_MACH_LOONGSON1=y
>> +# CONFIG_MIPS_MALTA is not set
>> +# CONFIG_MIPS_SIM is not set
>> +# CONFIG_NEC_MARKEINS is not set
>> +# CONFIG_MACH_VR41XX is not set
>> +# CONFIG_NXP_STB220 is not set
>> +# CONFIG_NXP_STB225 is not set
>> +# CONFIG_PNX8550_JBS is not set
>> +# CONFIG_PNX8550_STB810 is not set
>> +# CONFIG_PMC_MSP is not set
>> +# CONFIG_PMC_YOSEMITE is not set
>> +# CONFIG_POWERTV is not set
>> +# CONFIG_SGI_IP22 is not set
>> +# CONFIG_SGI_IP27 is not set
>> +# CONFIG_SGI_IP28 is not set
>> +# CONFIG_SGI_IP32 is not set
>> +# CONFIG_SIBYTE_CRHINE is not set
>> +# CONFIG_SIBYTE_CARMEL is not set
>> +# CONFIG_SIBYTE_CRHONE is not set
>> +# CONFIG_SIBYTE_RHONE is not set
>> +# CONFIG_SIBYTE_SWARM is not set
>> +# CONFIG_SIBYTE_LITTLESUR is not set
>> +# CONFIG_SIBYTE_SENTOSA is not set
>> +# CONFIG_SIBYTE_BIGSUR is not set
>> +# CONFIG_SNI_RM is not set
>> +# CONFIG_MACH_TX39XX is not set
>> +# CONFIG_MACH_TX49XX is not set
>> +# CONFIG_MIKROTIK_RB532 is not set
>> +# CONFIG_WR_PPMC is not set
>> +# CONFIG_CAVIUM_OCTEON_SIMULATOR is not set
>> +# CONFIG_CAVIUM_OCTEON_REFERENCE_BOARD is not set
>> +# CONFIG_NLM_XLR_BOARD is not set
>> +# CONFIG_ALCHEMY_GPIO_INDIRECT is not set
>> +CONFIG_ARCH_SPARSEMEM_ENABLE=y
>> +CONFIG_LOONGSON1_LS1B=y
>> +CONFIG_RWSEM_GENERIC_SPINLOCK=y
>> +# CONFIG_ARCH_HAS_ILOG2_U32 is not set
>> +# CONFIG_ARCH_HAS_ILOG2_U64 is not set
>> +CONFIG_ARCH_SUPPORTS_OPROFILE=y
>> +CONFIG_GENERIC_HWEIGHT=y
>> +CONFIG_GENERIC_CALIBRATE_DELAY=y
>> +CONFIG_GENERIC_CLOCKEVENTS=y
>> +CONFIG_GENERIC_CMOS_UPDATE=y
>> +CONFIG_SCHED_OMIT_FRAME_POINTER=y
>> +CONFIG_CEVT_R4K_LIB=y
>> +CONFIG_CEVT_R4K=y
>> +CONFIG_CSRC_R4K_LIB=y
>> +CONFIG_CSRC_R4K=y
>> +# CONFIG_ARCH_DMA_ADDR_T_64BIT is not set
>> +CONFIG_DMA_NONCOHERENT=y
>> +CONFIG_NEED_DMA_MAP_STATE=y
>> +CONFIG_SYS_HAS_EARLY_PRINTK=y
>> +# CONFIG_MIPS_MACHINE is not set
>> +# CONFIG_NO_IOPORT is not set
>> +CONFIG_CPU_LITTLE_ENDIAN=y
>> +CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
>> +CONFIG_IRQ_CPU=y
>> +CONFIG_BOOT_ELF32=y
>> +CONFIG_MIPS_L1_CACHE_SHIFT=5
>> +
>> +#
>> +# CPU selection
>> +#
>> +CONFIG_CPU_LOONGSON1B=y
>> +CONFIG_SYS_SUPPORTS_ZBOOT=y
>> +CONFIG_CPU_LOONGSON1=y
>> +CONFIG_SYS_HAS_CPU_LOONGSON1B=y
>> +CONFIG_CPU_MIPS32=y
>> +CONFIG_CPU_MIPSR2=y
>> +CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
>> +CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
>> +CONFIG_HARDWARE_WATCHPOINTS=y
>> +
>> +#
>> +# Kernel type
>> +#
>> +CONFIG_32BIT=y
>> +CONFIG_PAGE_SIZE_4KB=y
>> +# CONFIG_PAGE_SIZE_16KB is not set
>> +# CONFIG_PAGE_SIZE_64KB is not set
>> +CONFIG_FORCE_MAX_ZONEORDER=11
>> +CONFIG_CPU_HAS_PREFETCH=y
>> +CONFIG_MIPS_MT_DISABLED=y
>> +# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
>> +CONFIG_CPU_HAS_SYNC=y
>> +# CONFIG_HIGHMEM is not set
>> +CONFIG_CPU_SUPPORTS_HIGHMEM=y
>> +CONFIG_SYS_SUPPORTS_HIGHMEM=y
>> +CONFIG_ARCH_FLATMEM_ENABLE=y
>> +CONFIG_ARCH_POPULATES_NODE_MAP=y
>> +CONFIG_HW_PERF_EVENTS=y
>> +CONFIG_SELECT_MEMORY_MODEL=y
>> +CONFIG_FLATMEM_MANUAL=y
>> +# CONFIG_SPARSEMEM_MANUAL is not set
>> +CONFIG_FLATMEM=y
>> +CONFIG_FLAT_NODE_MEM_MAP=y
>> +CONFIG_SPARSEMEM_STATIC=y
>> +CONFIG_PAGEFLAGS_EXTENDED=y
>> +CONFIG_SPLIT_PTLOCK_CPUS=4
>> +# CONFIG_COMPACTION is not set
>> +# CONFIG_PHYS_ADDR_T_64BIT is not set
>> +CONFIG_ZONE_DMA_FLAG=0
>> +CONFIG_VIRT_TO_BUS=y
>> +# CONFIG_KSM is not set
>> +CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
>> +CONFIG_NEED_PER_CPU_KM=y
>> +# CONFIG_CLEANCACHE is not set
>> +CONFIG_TICK_ONESHOT=y
>> +# CONFIG_NO_HZ is not set
>> +CONFIG_HIGH_RES_TIMERS=y
>> +CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
>> +# CONFIG_HZ_48 is not set
>> +# CONFIG_HZ_100 is not set
>> +# CONFIG_HZ_128 is not set
>> +CONFIG_HZ_250=y
>> +# CONFIG_HZ_256 is not set
>> +# CONFIG_HZ_1000 is not set
>> +# CONFIG_HZ_1024 is not set
>> +CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
>> +CONFIG_HZ=250
>> +# CONFIG_PREEMPT_NONE is not set
>> +CONFIG_PREEMPT_VOLUNTARY=y
>> +# CONFIG_PREEMPT is not set
>> +CONFIG_KEXEC=y
>> +# CONFIG_SECCOMP is not set
>> +# CONFIG_USE_OF is not set
>> +CONFIG_LOCKDEP_SUPPORT=y
>> +CONFIG_STACKTRACE_SUPPORT=y
>> +CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
>> +CONFIG_HAVE_IRQ_WORK=y
>> +CONFIG_IRQ_WORK=y
>> +
>> +#
>> +# General setup
>> +#
>> +CONFIG_EXPERIMENTAL=y
>> +CONFIG_BROKEN_ON_SMP=y
>> +CONFIG_INIT_ENV_ARG_LIMIT=32
>> +CONFIG_CROSS_COMPILE=""
>> +CONFIG_LOCALVERSION=""
>> +# CONFIG_LOCALVERSION_AUTO is not set
>> +CONFIG_HAVE_KERNEL_GZIP=y
>> +CONFIG_HAVE_KERNEL_BZIP2=y
>> +CONFIG_HAVE_KERNEL_LZMA=y
>> +CONFIG_HAVE_KERNEL_LZO=y
>> +CONFIG_KERNEL_GZIP=y
>> +# CONFIG_KERNEL_BZIP2 is not set
>> +# CONFIG_KERNEL_LZMA is not set
>> +# CONFIG_KERNEL_LZO is not set
>> +CONFIG_DEFAULT_HOSTNAME="(none)"
>> +CONFIG_SWAP=y
>> +CONFIG_SYSVIPC=y
>> +CONFIG_SYSVIPC_SYSCTL=y
>> +# CONFIG_POSIX_MQUEUE is not set
>> +CONFIG_BSD_PROCESS_ACCT=y
>> +CONFIG_BSD_PROCESS_ACCT_V3=y
>> +# CONFIG_FHANDLE is not set
>> +# CONFIG_TASKSTATS is not set
>> +# CONFIG_AUDIT is not set
>> +CONFIG_HAVE_GENERIC_HARDIRQS=y
>> +
>> +#
>> +# IRQ subsystem
>> +#
>> +CONFIG_GENERIC_HARDIRQS=y
>> +CONFIG_GENERIC_IRQ_PROBE=y
>> +CONFIG_GENERIC_IRQ_SHOW=y
>> +
>> +#
>> +# RCU Subsystem
>> +#
>> +CONFIG_TINY_RCU=y
>> +# CONFIG_PREEMPT_RCU is not set
>> +# CONFIG_RCU_TRACE is not set
>> +# CONFIG_TREE_RCU_TRACE is not set
>> +CONFIG_IKCONFIG=y
>> +CONFIG_IKCONFIG_PROC=y
>> +CONFIG_LOG_BUF_SHIFT=16
>> +# CONFIG_CGROUPS is not set
>> +# CONFIG_NAMESPACES is not set
>> +# CONFIG_SCHED_AUTOGROUP is not set
>> +# CONFIG_SYSFS_DEPRECATED is not set
>> +# CONFIG_RELAY is not set
>> +CONFIG_BLK_DEV_INITRD=y
>> +CONFIG_INITRAMFS_SOURCE=""
>> +CONFIG_RD_GZIP=y
>> +CONFIG_RD_BZIP2=y
>> +CONFIG_RD_LZMA=y
>> +CONFIG_RD_XZ=y
>> +CONFIG_RD_LZO=y
>> +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
>> +CONFIG_SYSCTL=y
>> +CONFIG_ANON_INODES=y
>> +CONFIG_EXPERT=y
>> +CONFIG_SYSCTL_SYSCALL=y
>> +CONFIG_KALLSYMS=y
>> +CONFIG_KALLSYMS_ALL=y
>> +CONFIG_HOTPLUG=y
>> +CONFIG_PRINTK=y
>> +CONFIG_BUG=y
>> +CONFIG_ELF_CORE=y
>> +CONFIG_PCSPKR_PLATFORM=y
>> +CONFIG_BASE_FULL=y
>> +CONFIG_FUTEX=y
>> +CONFIG_EPOLL=y
>> +CONFIG_SIGNALFD=y
>> +CONFIG_TIMERFD=y
>> +CONFIG_EVENTFD=y
>> +CONFIG_SHMEM=y
>> +CONFIG_AIO=y
>> +# CONFIG_EMBEDDED is not set
>> +CONFIG_HAVE_PERF_EVENTS=y
>> +CONFIG_PERF_USE_VMALLOC=y
>> +
>> +#
>> +# Kernel Performance Events And Counters
>> +#
>> +CONFIG_PERF_EVENTS=y
>> +# CONFIG_PERF_COUNTERS is not set
>> +# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
>> +CONFIG_VM_EVENT_COUNTERS=y
>> +CONFIG_SLUB_DEBUG=y
>> +# CONFIG_COMPAT_BRK is not set
>> +# CONFIG_SLAB is not set
>> +CONFIG_SLUB=y
>> +# CONFIG_SLOB is not set
>> +# CONFIG_PROFILING is not set
>> +CONFIG_HAVE_OPROFILE=y
>> +# CONFIG_KPROBES is not set
>> +# CONFIG_JUMP_LABEL is not set
>> +CONFIG_HAVE_KPROBES=y
>> +CONFIG_HAVE_KRETPROBES=y
>> +CONFIG_HAVE_DMA_ATTRS=y
>> +CONFIG_HAVE_DMA_API_DEBUG=y
>> +CONFIG_HAVE_ARCH_JUMP_LABEL=y
>> +
>> +#
>> +# GCOV-based kernel profiling
>> +#
>> +# CONFIG_GCOV_KERNEL is not set
>> +CONFIG_HAVE_GENERIC_DMA_COHERENT=y
>> +CONFIG_SLABINFO=y
>> +CONFIG_RT_MUTEXES=y
>> +CONFIG_BASE_SMALL=0
>> +CONFIG_MODULES=y
>> +# CONFIG_MODULE_FORCE_LOAD is not set
>> +CONFIG_MODULE_UNLOAD=y
>> +# CONFIG_MODULE_FORCE_UNLOAD is not set
>> +CONFIG_MODVERSIONS=y
>> +# CONFIG_MODULE_SRCVERSION_ALL is not set
>> +CONFIG_BLOCK=y
>> +# CONFIG_LBDAF is not set
>> +# CONFIG_BLK_DEV_BSG is not set
>> +# CONFIG_BLK_DEV_INTEGRITY is not set
>> +
>> +#
>> +# IO Schedulers
>> +#
>> +CONFIG_IOSCHED_NOOP=y
>> +CONFIG_IOSCHED_DEADLINE=y
>> +CONFIG_IOSCHED_CFQ=y
>> +# CONFIG_DEFAULT_DEADLINE is not set
>> +CONFIG_DEFAULT_CFQ=y
>> +# CONFIG_DEFAULT_NOOP is not set
>> +CONFIG_DEFAULT_IOSCHED="cfq"
>> +# CONFIG_INLINE_SPIN_TRYLOCK is not set
>> +# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
>> +# CONFIG_INLINE_SPIN_LOCK is not set
>> +# CONFIG_INLINE_SPIN_LOCK_BH is not set
>> +# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
>> +# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
>> +CONFIG_INLINE_SPIN_UNLOCK=y
>> +# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
>> +CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
>> +# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
>> +# CONFIG_INLINE_READ_TRYLOCK is not set
>> +# CONFIG_INLINE_READ_LOCK is not set
>> +# CONFIG_INLINE_READ_LOCK_BH is not set
>> +# CONFIG_INLINE_READ_LOCK_IRQ is not set
>> +# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
>> +CONFIG_INLINE_READ_UNLOCK=y
>> +# CONFIG_INLINE_READ_UNLOCK_BH is not set
>> +CONFIG_INLINE_READ_UNLOCK_IRQ=y
>> +# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
>> +# CONFIG_INLINE_WRITE_TRYLOCK is not set
>> +# CONFIG_INLINE_WRITE_LOCK is not set
>> +# CONFIG_INLINE_WRITE_LOCK_BH is not set
>> +# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
>> +# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
>> +CONFIG_INLINE_WRITE_UNLOCK=y
>> +# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
>> +CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
>> +# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
>> +# CONFIG_MUTEX_SPIN_ON_OWNER is not set
>> +# CONFIG_FREEZER is not set
>> +
>> +#
>> +# Bus options (PCI, PCMCIA, EISA, ISA, TC)
>> +#
>> +# CONFIG_ARCH_SUPPORTS_MSI is not set
>> +CONFIG_MMU=y
>> +# CONFIG_PCCARD is not set
>> +
>> +#
>> +# Executable file formats
>> +#
>> +CONFIG_BINFMT_ELF=y
>> +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
>> +# CONFIG_HAVE_AOUT is not set
>> +# CONFIG_BINFMT_MISC is not set
>> +CONFIG_TRAD_SIGNALS=y
>> +
>> +#
>> +# Power management options
>> +#
>> +CONFIG_ARCH_HIBERNATION_POSSIBLE=y
>> +CONFIG_ARCH_SUSPEND_POSSIBLE=y
>> +# CONFIG_SUSPEND is not set
>> +# CONFIG_HIBERNATION is not set
>> +# CONFIG_PM_RUNTIME is not set
>> +CONFIG_NET=y
>> +
>> +#
>> +# Networking options
>> +#
>> +CONFIG_PACKET=y
>> +CONFIG_UNIX=y
>> +# CONFIG_NET_KEY is not set
>> +CONFIG_INET=y
>> +# CONFIG_IP_MULTICAST is not set
>> +# CONFIG_IP_ADVANCED_ROUTER is not set
>> +CONFIG_IP_PNP=y
>> +CONFIG_IP_PNP_DHCP=y
>> +# CONFIG_IP_PNP_BOOTP is not set
>> +# CONFIG_IP_PNP_RARP is not set
>> +# CONFIG_NET_IPIP is not set
>> +# CONFIG_NET_IPGRE_DEMUX is not set
>> +# CONFIG_ARPD is not set
>> +CONFIG_SYN_COOKIES=y
>> +# CONFIG_INET_AH is not set
>> +# CONFIG_INET_ESP is not set
>> +# CONFIG_INET_IPCOMP is not set
>> +# CONFIG_INET_XFRM_TUNNEL is not set
>> +# CONFIG_INET_TUNNEL is not set
>> +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
>> +# CONFIG_INET_XFRM_MODE_TUNNEL is not set
>> +# CONFIG_INET_XFRM_MODE_BEET is not set
>> +CONFIG_INET_LRO=y
>> +# CONFIG_INET_DIAG is not set
>> +# CONFIG_TCP_CONG_ADVANCED is not set
>> +CONFIG_TCP_CONG_CUBIC=y
>> +CONFIG_DEFAULT_TCP_CONG="cubic"
>> +# CONFIG_TCP_MD5SIG is not set
>> +# CONFIG_IPV6 is not set
>> +# CONFIG_NETWORK_SECMARK is not set
>> +# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
>> +# CONFIG_NETFILTER is not set
>> +# CONFIG_IP_DCCP is not set
>> +# CONFIG_IP_SCTP is not set
>> +# CONFIG_RDS is not set
>> +# CONFIG_TIPC is not set
>> +# CONFIG_ATM is not set
>> +# CONFIG_L2TP is not set
>> +# CONFIG_BRIDGE is not set
>> +# CONFIG_VLAN_8021Q is not set
>> +# CONFIG_DECNET is not set
>> +# CONFIG_LLC2 is not set
>> +# CONFIG_IPX is not set
>> +# CONFIG_ATALK is not set
>> +# CONFIG_X25 is not set
>> +# CONFIG_LAPB is not set
>> +# CONFIG_ECONET is not set
>> +# CONFIG_WAN_ROUTER is not set
>> +# CONFIG_PHONET is not set
>> +# CONFIG_IEEE802154 is not set
>> +# CONFIG_NET_SCHED is not set
>> +# CONFIG_DCB is not set
>> +# CONFIG_DNS_RESOLVER is not set
>> +# CONFIG_BATMAN_ADV is not set
>> +
>> +#
>> +# Network testing
>> +#
>> +# CONFIG_NET_PKTGEN is not set
>> +# CONFIG_HAMRADIO is not set
>> +# CONFIG_CAN is not set
>> +# CONFIG_IRDA is not set
>> +# CONFIG_BT is not set
>> +# CONFIG_AF_RXRPC is not set
>> +# CONFIG_WIRELESS is not set
>> +# CONFIG_WIMAX is not set
>> +# CONFIG_RFKILL is not set
>> +# CONFIG_NET_9P is not set
>> +# CONFIG_CAIF is not set
>> +# CONFIG_CEPH_LIB is not set
>> +
>> +#
>> +# Device Drivers
>> +#
>> +
>> +#
>> +# Generic Driver Options
>> +#
>> +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
>> +CONFIG_DEVTMPFS=y
>> +CONFIG_DEVTMPFS_MOUNT=y
>> +# CONFIG_STANDALONE is not set
>> +CONFIG_PREVENT_FIRMWARE_BUILD=y
>> +CONFIG_FW_LOADER=y
>> +CONFIG_FIRMWARE_IN_KERNEL=y
>> +CONFIG_EXTRA_FIRMWARE=""
>> +# CONFIG_DEBUG_DRIVER is not set
>> +# CONFIG_DEBUG_DEVRES is not set
>> +# CONFIG_SYS_HYPERVISOR is not set
>> +# CONFIG_CONNECTOR is not set
>> +# CONFIG_MTD is not set
>> +# CONFIG_PARPORT is not set
>> +CONFIG_BLK_DEV=y
>> +# CONFIG_BLK_DEV_COW_COMMON is not set
>> +CONFIG_BLK_DEV_LOOP=y
>> +# CONFIG_BLK_DEV_CRYPTOLOOP is not set
>> +
>> +#
>> +# DRBD disabled because PROC_FS, INET or CONNECTOR not selected
>> +#
>> +# CONFIG_BLK_DEV_NBD is not set
>> +# CONFIG_BLK_DEV_RAM is not set
>> +# CONFIG_CDROM_PKTCDVD is not set
>> +# CONFIG_ATA_OVER_ETH is not set
>> +# CONFIG_BLK_DEV_HD is not set
>> +# CONFIG_BLK_DEV_RBD is not set
>> +# CONFIG_SENSORS_LIS3LV02D is not set
>> +# CONFIG_MISC_DEVICES is not set
>> +CONFIG_HAVE_IDE=y
>> +# CONFIG_IDE is not set
>> +
>> +#
>> +# SCSI device support
>> +#
>> +CONFIG_SCSI_MOD=y
>> +# CONFIG_RAID_ATTRS is not set
>> +# CONFIG_SCSI is not set
>> +# CONFIG_SCSI_DMA is not set
>> +# CONFIG_SCSI_NETLINK is not set
>> +# CONFIG_ATA is not set
>> +# CONFIG_MD is not set
>> +# CONFIG_NETDEVICES is not set
>> +# CONFIG_ISDN is not set
>> +# CONFIG_PHONE is not set
>> +
>> +#
>> +# Input device support
>> +#
>> +CONFIG_INPUT=y
>> +# CONFIG_INPUT_FF_MEMLESS is not set
>> +# CONFIG_INPUT_POLLDEV is not set
>> +# CONFIG_INPUT_SPARSEKMAP is not set
>> +
>> +#
>> +# Userland interfaces
>> +#
>> +# CONFIG_INPUT_MOUSEDEV is not set
>> +# CONFIG_INPUT_JOYDEV is not set
>> +# CONFIG_INPUT_EVDEV is not set
>> +# CONFIG_INPUT_EVBUG is not set
>> +
>> +#
>> +# Input Device Drivers
>> +#
>> +# CONFIG_INPUT_KEYBOARD is not set
>> +# CONFIG_INPUT_MOUSE is not set
>> +# CONFIG_INPUT_JOYSTICK is not set
>> +# CONFIG_INPUT_TABLET is not set
>> +# CONFIG_INPUT_TOUCHSCREEN is not set
>> +# CONFIG_INPUT_MISC is not set
>> +
>> +#
>> +# Hardware I/O ports
>> +#
>> +# CONFIG_SERIO is not set
>> +# CONFIG_GAMEPORT is not set
>> +
>> +#
>> +# Character devices
>> +#
>> +CONFIG_VT=y
>> +CONFIG_CONSOLE_TRANSLATIONS=y
>> +CONFIG_VT_CONSOLE=y
>> +CONFIG_HW_CONSOLE=y
>> +CONFIG_VT_HW_CONSOLE_BINDING=y
>> +CONFIG_UNIX98_PTYS=y
>> +# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
>> +CONFIG_LEGACY_PTYS=y
>> +CONFIG_LEGACY_PTY_COUNT=8
>> +# CONFIG_SERIAL_NONSTANDARD is not set
>> +# CONFIG_N_GSM is not set
>> +# CONFIG_TRACE_SINK is not set
>> +# CONFIG_DEVKMEM is not set
>> +
>> +#
>> +# Serial drivers
>> +#
>> +CONFIG_SERIAL_8250=y
>> +CONFIG_SERIAL_8250_CONSOLE=y
>> +CONFIG_SERIAL_8250_NR_UARTS=4
>> +CONFIG_SERIAL_8250_RUNTIME_UARTS=4
>> +# CONFIG_SERIAL_8250_EXTENDED is not set
>> +
>> +#
>> +# Non-8250 serial port support
>> +#
>> +CONFIG_SERIAL_CORE=y
>> +CONFIG_SERIAL_CORE_CONSOLE=y
>> +CONFIG_CONSOLE_POLL=y
>> +# CONFIG_SERIAL_TIMBERDALE is not set
>> +# CONFIG_SERIAL_ALTERA_JTAGUART is not set
>> +# CONFIG_SERIAL_ALTERA_UART is not set
>> +# CONFIG_SERIAL_XILINX_PS_UART is not set
>> +# CONFIG_TTY_PRINTK is not set
>> +# CONFIG_IPMI_HANDLER is not set
>> +# CONFIG_HW_RANDOM is not set
>> +# CONFIG_R3964 is not set
>> +# CONFIG_RAW_DRIVER is not set
>> +# CONFIG_TCG_TPM is not set
>> +CONFIG_RAMOOPS=y
>> +# CONFIG_I2C is not set
>> +# CONFIG_SPI is not set
>> +
>> +#
>> +# PPS support
>> +#
>> +# CONFIG_PPS is not set
>> +
>> +#
>> +# PPS generators support
>> +#
>> +
>> +#
>> +# PTP clock support
>> +#
>> +
>> +#
>> +# Enable Device Drivers -> PPS to see the PTP clock options.
>> +#
>> +# CONFIG_W1 is not set
>> +# CONFIG_POWER_SUPPLY is not set
>> +# CONFIG_HWMON is not set
>> +# CONFIG_THERMAL is not set
>> +# CONFIG_WATCHDOG is not set
>> +CONFIG_SSB_POSSIBLE=y
>> +
>> +#
>> +# Sonics Silicon Backplane
>> +#
>> +# CONFIG_SSB is not set
>> +CONFIG_BCMA_POSSIBLE=y
>> +
>> +#
>> +# Broadcom specific AMBA
>> +#
>> +# CONFIG_BCMA is not set
>> +# CONFIG_MFD_SUPPORT is not set
>> +# CONFIG_REGULATOR is not set
>> +# CONFIG_MEDIA_SUPPORT is not set
>> +
>> +#
>> +# Graphics support
>> +#
>> +# CONFIG_DRM is not set
>> +# CONFIG_VGASTATE is not set
>> +# CONFIG_VIDEO_OUTPUT_CONTROL is not set
>> +# CONFIG_FB is not set
>> +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
>> +
>> +#
>> +# Display device support
>> +#
>> +# CONFIG_DISPLAY_SUPPORT is not set
>> +
>> +#
>> +# Console display driver support
>> +#
>> +# CONFIG_VGA_CONSOLE is not set
>> +CONFIG_DUMMY_CONSOLE=y
>> +# CONFIG_SOUND is not set
>> +# CONFIG_HID_SUPPORT is not set
>> +# CONFIG_USB_SUPPORT is not set
>> +# CONFIG_MMC is not set
>> +# CONFIG_MEMSTICK is not set
>> +# CONFIG_NEW_LEDS is not set
>> +# CONFIG_NFC_DEVICES is not set
>> +# CONFIG_ACCESSIBILITY is not set
>> +CONFIG_RTC_LIB=y
>> +# CONFIG_RTC_CLASS is not set
>> +# CONFIG_DMADEVICES is not set
>> +# CONFIG_AUXDISPLAY is not set
>> +# CONFIG_UIO is not set
>> +# CONFIG_STAGING is not set
>> +
>> +#
>> +# File systems
>> +#
>> +CONFIG_EXT2_FS=y
>> +CONFIG_EXT2_FS_XATTR=y
>> +CONFIG_EXT2_FS_POSIX_ACL=y
>> +CONFIG_EXT2_FS_SECURITY=y
>> +# CONFIG_EXT2_FS_XIP is not set
>> +CONFIG_EXT3_FS=y
>> +CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
>> +CONFIG_EXT3_FS_XATTR=y
>> +CONFIG_EXT3_FS_POSIX_ACL=y
>> +CONFIG_EXT3_FS_SECURITY=y
>> +# CONFIG_EXT4_FS is not set
>> +CONFIG_JBD=y
>> +# CONFIG_JBD_DEBUG is not set
>> +CONFIG_FS_MBCACHE=y
>> +# CONFIG_REISERFS_FS is not set
>> +# CONFIG_JFS_FS is not set
>> +# CONFIG_XFS_FS is not set
>> +# CONFIG_BTRFS_FS is not set
>> +# CONFIG_NILFS2_FS is not set
>> +CONFIG_FS_POSIX_ACL=y
>> +CONFIG_FILE_LOCKING=y
>> +CONFIG_FSNOTIFY=y
>> +# CONFIG_DNOTIFY is not set
>> +CONFIG_INOTIFY_USER=y
>> +# CONFIG_FANOTIFY is not set
>> +# CONFIG_QUOTA is not set
>> +# CONFIG_QUOTACTL is not set
>> +# CONFIG_AUTOFS4_FS is not set
>> +# CONFIG_FUSE_FS is not set
>> +CONFIG_GENERIC_ACL=y
>> +
>> +#
>> +# Caches
>> +#
>> +# CONFIG_FSCACHE is not set
>> +
>> +#
>> +# CD-ROM/DVD Filesystems
>> +#
>> +# CONFIG_ISO9660_FS is not set
>> +# CONFIG_UDF_FS is not set
>> +
>> +#
>> +# DOS/FAT/NT Filesystems
>> +#
>> +# CONFIG_MSDOS_FS is not set
>> +# CONFIG_VFAT_FS is not set
>> +# CONFIG_NTFS_FS is not set
>> +
>> +#
>> +# Pseudo filesystems
>> +#
>> +CONFIG_PROC_FS=y
>> +CONFIG_PROC_KCORE=y
>> +CONFIG_PROC_SYSCTL=y
>> +CONFIG_PROC_PAGE_MONITOR=y
>> +CONFIG_SYSFS=y
>> +CONFIG_TMPFS=y
>> +CONFIG_TMPFS_POSIX_ACL=y
>> +CONFIG_TMPFS_XATTR=y
>> +# CONFIG_HUGETLB_PAGE is not set
>> +# CONFIG_CONFIGFS_FS is not set
>> +# CONFIG_MISC_FILESYSTEMS is not set
>> +# CONFIG_NETWORK_FILESYSTEMS is not set
>> +
>> +#
>> +# Partition Types
>> +#
>> +# CONFIG_PARTITION_ADVANCED is not set
>> +CONFIG_MSDOS_PARTITION=y
>> +# CONFIG_NLS is not set
>> +
>> +#
>> +# Kernel hacking
>> +#
>> +CONFIG_TRACE_IRQFLAGS_SUPPORT=y
>> +# CONFIG_PRINTK_TIME is not set
>> +CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
>> +# CONFIG_ENABLE_WARN_DEPRECATED is not set
>> +# CONFIG_ENABLE_MUST_CHECK is not set
>> +CONFIG_FRAME_WARN=1024
>> +CONFIG_MAGIC_SYSRQ=y
>> +# CONFIG_STRIP_ASM_SYMS is not set
>> +CONFIG_UNUSED_SYMBOLS=y
>> +CONFIG_DEBUG_FS=y
>> +# CONFIG_HEADERS_CHECK is not set
>> +# CONFIG_DEBUG_SECTION_MISMATCH is not set
>> +CONFIG_DEBUG_KERNEL=y
>> +# CONFIG_DEBUG_SHIRQ is not set
>> +# CONFIG_LOCKUP_DETECTOR is not set
>> +# CONFIG_HARDLOCKUP_DETECTOR is not set
>> +CONFIG_DETECT_HUNG_TASK=y
>> +CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
>> +# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
>> +CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
>> +CONFIG_SCHED_DEBUG=y
>> +CONFIG_SCHEDSTATS=y
>> +CONFIG_TIMER_STATS=y
>> +# CONFIG_DEBUG_OBJECTS is not set
>> +# CONFIG_SLUB_DEBUG_ON is not set
>> +# CONFIG_SLUB_STATS is not set
>> +# CONFIG_DEBUG_KMEMLEAK is not set
>> +# CONFIG_DEBUG_RT_MUTEXES is not set
>> +# CONFIG_RT_MUTEX_TESTER is not set
>> +# CONFIG_DEBUG_SPINLOCK is not set
>> +# CONFIG_DEBUG_MUTEXES is not set
>> +# CONFIG_DEBUG_LOCK_ALLOC is not set
>> +# CONFIG_PROVE_LOCKING is not set
>> +# CONFIG_SPARSE_RCU_POINTER is not set
>> +# CONFIG_LOCK_STAT is not set
>> +# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
>> +# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
>> +# CONFIG_DEBUG_STACK_USAGE is not set
>> +# CONFIG_DEBUG_KOBJECT is not set
>> +CONFIG_DEBUG_INFO=y
>> +# CONFIG_DEBUG_INFO_REDUCED is not set
>> +# CONFIG_DEBUG_VM is not set
>> +# CONFIG_DEBUG_WRITECOUNT is not set
>> +CONFIG_DEBUG_MEMORY_INIT=y
>> +# CONFIG_DEBUG_LIST is not set
>> +# CONFIG_TEST_LIST_SORT is not set
>> +# CONFIG_DEBUG_SG is not set
>> +# CONFIG_DEBUG_NOTIFIERS is not set
>> +# CONFIG_DEBUG_CREDENTIALS is not set
>> +CONFIG_BOOT_PRINTK_DELAY=y
>> +# CONFIG_RCU_TORTURE_TEST is not set
>> +# CONFIG_BACKTRACE_SELF_TEST is not set
>> +# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
>> +# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
>> +# CONFIG_LKDTM is not set
>> +# CONFIG_FAULT_INJECTION is not set
>> +CONFIG_SYSCTL_SYSCALL_CHECK=y
>> +# CONFIG_DEBUG_PAGEALLOC is not set
>> +CONFIG_HAVE_FUNCTION_TRACER=y
>> +CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
>> +CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
>> +CONFIG_HAVE_DYNAMIC_FTRACE=y
>> +CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
>> +CONFIG_HAVE_C_RECORDMCOUNT=y
>> +CONFIG_TRACING_SUPPORT=y
>> +# CONFIG_FTRACE is not set
>> +# CONFIG_DYNAMIC_DEBUG is not set
>> +# CONFIG_DMA_API_DEBUG is not set
>> +# CONFIG_ATOMIC64_SELFTEST is not set
>> +# CONFIG_SAMPLES is not set
>> +CONFIG_HAVE_ARCH_KGDB=y
>> +CONFIG_KGDB=y
>> +CONFIG_KGDB_SERIAL_CONSOLE=y
>> +# CONFIG_KGDB_TESTS is not set
>> +CONFIG_KGDB_LOW_LEVEL_TRAP=y
>> +CONFIG_KGDB_KDB=y
>> +CONFIG_KDB_KEYBOARD=y
>> +# CONFIG_TEST_KSTRTOX is not set
>> +# CONFIG_EARLY_PRINTK is not set
>> +# CONFIG_CMDLINE_BOOL is not set
>> +# CONFIG_DEBUG_STACKOVERFLOW is not set
>> +# CONFIG_RUNTIME_DEBUG is not set
>> +# CONFIG_DEBUG_ZBOOT is not set
>> +# CONFIG_SPINLOCK_TEST is not set
>> +
>> +#
>> +# Security options
>> +#
>> +CONFIG_KEYS=y
>> +# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
>> +# CONFIG_SECURITY_DMESG_RESTRICT is not set
>> +# CONFIG_SECURITY is not set
>> +# CONFIG_SECURITYFS is not set
>> +CONFIG_DEFAULT_SECURITY_DAC=y
>> +CONFIG_DEFAULT_SECURITY=""
>> +# CONFIG_CRYPTO is not set
>> +# CONFIG_VIRTUALIZATION is not set
>> +# CONFIG_BINARY_PRINTF is not set
>> +
>> +#
>> +# Library routines
>> +#
>> +CONFIG_BITREVERSE=y
>> +# CONFIG_CRC_CCITT is not set
>> +# CONFIG_CRC16 is not set
>> +# CONFIG_CRC_T10DIF is not set
>> +# CONFIG_CRC_ITU_T is not set
>> +CONFIG_CRC32=y
>> +# CONFIG_CRC7 is not set
>> +# CONFIG_LIBCRC32C is not set
>> +CONFIG_ZLIB_INFLATE=y
>> +CONFIG_LZO_DECOMPRESS=y
>> +CONFIG_XZ_DEC=y
>> +CONFIG_XZ_DEC_X86=y
>> +CONFIG_XZ_DEC_POWERPC=y
>> +CONFIG_XZ_DEC_IA64=y
>> +CONFIG_XZ_DEC_ARM=y
>> +CONFIG_XZ_DEC_ARMTHUMB=y
>> +CONFIG_XZ_DEC_SPARC=y
>> +CONFIG_XZ_DEC_BCJ=y
>> +# CONFIG_XZ_DEC_TEST is not set
>> +CONFIG_DECOMPRESS_GZIP=y
>> +CONFIG_DECOMPRESS_BZIP2=y
>> +CONFIG_DECOMPRESS_LZMA=y
>> +CONFIG_DECOMPRESS_XZ=y
>> +CONFIG_DECOMPRESS_LZO=y
>> +CONFIG_HAS_IOMEM=y
>> +CONFIG_HAS_IOPORT=y
>> +CONFIG_HAS_DMA=y
>> +CONFIG_NLATTR=y
>> +CONFIG_GENERIC_ATOMIC64=y
>> +# CONFIG_AVERAGE is not set
>
> We should use the 'minimal' defconfig now, please get it with the
> following command:
>
> $ make savedefconfig

Done in the new patch.

>> diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
>> index 5f95a4b..975f372 100644
>> --- a/arch/mips/include/asm/cpu.h
>> +++ b/arch/mips/include/asm/cpu.h
>> @@ -191,6 +191,7 @@
>> #define PRID_REV_34K_V1_0_2 0x0022
>> #define PRID_REV_LOONGSON2E 0x0002
>> #define PRID_REV_LOONGSON2F 0x0003
>> +#define PRID_REV_LOONGSON1B 0x0020
>>
>> /*
>> * Older processors used to encode processor version and revision in two
>> @@ -253,7 +254,7 @@ enum cpu_type_enum {
>> */
>> CPU_4KC, CPU_4KEC, CPU_4KSC, CPU_24K, CPU_34K, CPU_1004K, CPU_74K,
>> CPU_ALCHEMY, CPU_PR4450, CPU_BMIPS32, CPU_BMIPS3300, CPU_BMIPS4350,
>> - CPU_BMIPS4380, CPU_BMIPS5000, CPU_JZRISC,
>> + CPU_BMIPS4380, CPU_BMIPS5000, CPU_JZRISC, CPU_LOONGSON1,
>>
>> /*
>> * MIPS64 class processors
>> diff --git a/arch/mips/include/asm/mach-loongson1/irq.h
>> b/arch/mips/include/asm/mach-loongson1/irq.h
>> new file mode 100644
>> index 0000000..3f1053e
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/irq.h
>> @@ -0,0 +1,70 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * IRQ mappings for Loongson1.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_IRQ_H
>> +#define __ASM_MACH_LOONGSON1_IRQ_H
>> +
>> +/*
>> + * CPU core Interrupt Numbers
>> + */
>> +#define MIPS_CPU_IRQ_BASE 0
>> +#define MIPS_CPU_IRQ(x) (MIPS_CPU_IRQ_BASE + (x))
>> +#define SOFTINT0_IRQ MIPS_CPU_IRQ(0)
>> +#define SOFTINT1_IRQ MIPS_CPU_IRQ(1)
>> +#define INT0_IRQ MIPS_CPU_IRQ(2)
>> +#define INT1_IRQ MIPS_CPU_IRQ(3)
>> +#define INT2_IRQ MIPS_CPU_IRQ(4)
>> +#define INT3_IRQ MIPS_CPU_IRQ(5)
>> +#define INT4_IRQ MIPS_CPU_IRQ(6)
>> +#define TIMER_IRQ MIPS_CPU_IRQ(7) /* cpu
>> timer */
>> +
>> +/*
>> + * INT0~3 Interrupt Numbers
>> + */
>> +#define LOONGSON1_IRQ_BASE 8
>> +#define LOONGSON1_IRQ(n,x) (LOONGSON1_IRQ_BASE + (n << 5) +
>> (x))
>> +
>> +#define LOONGSON1_UART0_IRQ LOONGSON1_IRQ(0,2)
>> +#define LOONGSON1_UART1_IRQ LOONGSON1_IRQ(0,3)
>> +#define LOONGSON1_UART2_IRQ LOONGSON1_IRQ(0,4)
>> +#define LOONGSON1_UART3_IRQ LOONGSON1_IRQ(0,5)
>> +#define LOONGSON1_CAN0_IRQ LOONGSON1_IRQ(0,6)
>> +#define LOONGSON1_CAN1_IRQ LOONGSON1_IRQ(0,7)
>> +#define LOONGSON1_SPI0_IRQ LOONGSON1_IRQ(0,8)
>> +#define LOONGSON1_SPI1_IRQ LOONGSON1_IRQ(0,9)
>> +#define LOONGSON1_AC97_IRQ LOONGSON1_IRQ(0,10)
>> +#define LOONGSON1_DMA0_IRQ LOONGSON1_IRQ(0,13)
>> +#define LOONGSON1_DMA1_IRQ LOONGSON1_IRQ(0,14)
>> +#define LOONGSON1_DMA2_IRQ LOONGSON1_IRQ(0,15)
>> +#define LOONGSON1_PWM0_IRQ LOONGSON1_IRQ(0,17)
>> +#define LOONGSON1_PWM1_IRQ LOONGSON1_IRQ(0,18)
>> +#define LOONGSON1_PWM2_IRQ LOONGSON1_IRQ(0,19)
>> +#define LOONGSON1_PWM3_IRQ LOONGSON1_IRQ(0,20)
>> +#define LOONGSON1_RTC_INT0_IRQ LOONGSON1_IRQ(0,21)
>> +#define LOONGSON1_RTC_INT1_IRQ LOONGSON1_IRQ(0,22)
>> +#define LOONGSON1_RTC_INT2_IRQ LOONGSON1_IRQ(0,23)
>> +#define LOONGSON1_TOY_INT0_IRQ LOONGSON1_IRQ(0,24)
>> +#define LOONGSON1_TOY_INT1_IRQ LOONGSON1_IRQ(0,25)
>> +#define LOONGSON1_TOY_INT2_IRQ LOONGSON1_IRQ(0,26)
>> +#define LOONGSON1_RTC_TICK_IRQ LOONGSON1_IRQ(0,27)
>> +#define LOONGSON1_TOY_TICK_IRQ LOONGSON1_IRQ(0,28)
>> +#define LOONGSON1_UART4_IRQ LOONGSON1_IRQ(0,29)
>> +#define LOONGSON1_UART5_IRQ LOONGSON1_IRQ(0,30)
>> +
>> +#define LOONGSON1_OHCI_IRQ LOONGSON1_IRQ(1,0)
>> +#define LOONGSON1_EHCI_IRQ LOONGSON1_IRQ(1,1)
>> +#define LOONGSON1_GMAC0_IRQ LOONGSON1_IRQ(1,2)
>> +#define LOONGSON1_GMAC1_IRQ LOONGSON1_IRQ(1,3)
>> +
>> +#define NR_IRQS LOONGSON1_GMAC1_IRQ
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_IRQ_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/loongson1.h
>> b/arch/mips/include/asm/mach-loongson1/loongson1.h
>> new file mode 100644
>> index 0000000..466136d
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/loongson1.h
>> @@ -0,0 +1,48 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * Register mappings for Loongson1.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_LOONGSON1_H
>> +#define __ASM_MACH_LOONGSON1_LOONGSON1_H
>> +
>> +#define DEFAULT_MEMSIZE (256) /* If no memsize
>> provided */
>> +
>> +/* Loongson1 Register Bases */
>> +/* All regs are accessed in KSEG1 */
>> +#define LOONGSON1_REGBASE (0xa0000000ul + 0x1fe00000ul)
>> +
>> +#define LOONGSON1_INTC_BASE (0xbfd01040)
>> +#define LOONGSON1_USB_BASE (0xbfe00000)
>> +#define LOONGSON1_GMAC0_BASE (0xbfe10000)
>> +#define LOONGSON1_GMAC1_BASE (0xbfe20000)
>> +#define LOONGSON1_UART0_BASE (0xbfe40000)
>> +#define LOONGSON1_UART1_BASE (0xbfe44000)
>> +#define LOONGSON1_UART2_BASE (0xbfe48000)
>> +#define LOONGSON1_UART3_BASE (0xbfe4c000)
>> +#define LOONGSON1_UART4_BASE (0xbfe6c000)
>> +#define LOONGSON1_UART5_BASE (0xbfe7c000)
>> +#define LOONGSON1_CAN0_BASE (0xbfe50000)
>> +#define LOONGSON1_CAN1_BASE (0xbfe54000)
>> +#define LOONGSON1_I2C0_BASE (0xbfe58000)
>> +#define LOONGSON1_I2C1_BASE (0xbfe68000)
>> +#define LOONGSON1_I2C2_BASE (0xbfe70000)
>> +#define LOONGSON1_PWM_BASE (0xbfe5c000)
>> +#define LOONGSON1_WDT_BASE (0xbfe5c060)
>> +#define LOONGSON1_RTC_BASE (0xbfe64000)
>> +#define LOONGSON1_AC97_BASE (0xbfe74000)
>> +#define LOONGSON1_NAND_BASE (0xbfe78000)
>> +#define LOONGSON1_CLK_BASE (0xbfe78030)
>> +
>> +#include <regs-clk.h>
>> +#include <regs-intc.h>
>> +#include <regs-wdt.h>
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_LOONGSON1_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/platform.h
>> b/arch/mips/include/asm/mach-loongson1/platform.h
>> new file mode 100644
>> index 0000000..db4f02e
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/platform.h
>> @@ -0,0 +1,20 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_PLATFORM_H
>> +#define __ASM_MACH_LOONGSON1_PLATFORM_H
>> +
>> +#include <linux/platform_device.h>
>> +
>> +extern struct platform_device loongson1_uart_device;
>> +
>> +void loongson1_serial_setup(void);
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_PLATFORM_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/prom.h
>> b/arch/mips/include/asm/mach-loongson1/prom.h
>> new file mode 100644
>> index 0000000..b871dc4
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/prom.h
>> @@ -0,0 +1,24 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_PROM_H
>> +#define __ASM_MACH_LOONGSON1_PROM_H
>> +
>> +#include <linux/io.h>
>> +#include <linux/init.h>
>> +#include <linux/irq.h>
>> +
>> +/* environment arguments from bootloader */
>> +extern unsigned long memsize, highmemsize;
>> +
>> +/* loongson-specific command line, env and memory initialization */
>> +extern char *prom_getenv(char *name);
>> +extern void __init prom_init_cmdline(void);
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_PROM_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/regs-clk.h
>> b/arch/mips/include/asm/mach-loongson1/regs-clk.h
>> new file mode 100644
>> index 0000000..8a14d97
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/regs-clk.h
>> @@ -0,0 +1,32 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * Loongson1 Clock Register Definitions.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_REGS_CLK_H
>> +#define __ASM_MACH_LOONGSON1_REGS_CLK_H
>> +
>> +#define LOONGSON1_CLK_REG(x) ((void __iomem
>> *)(LOONGSON1_CLK_BASE + (x)))
>> +
>> +#define LS1_CLK_PLL_FREQ LOONGSON1_CLK_REG(0x0)
>> +#define LS1_CLK_PLL_DIV LOONGSON1_CLK_REG(0x4)
>> +
>> +/* Clock PLL Divisor Register Bits */
>> +#define DIV_DC_EN (0x1 << 31)
>> +#define DIV_DC (0x1f << 26)
>> +#define DIV_CPU_EN (0x1 << 25)
>> +#define DIV_CPU (0x1f << 20)
>> +#define DIV_DDR_EN (0x1 << 19)
>> +#define DIV_DDR (0x1f << 14)
>> +
>> +#define DIV_DC_SHIFT (26)
>> +#define DIV_CPU_SHIFT (20)
>> +#define DIV_DDR_SHIFT (14)
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_REGS_CLK_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/regs-intc.h
>> b/arch/mips/include/asm/mach-loongson1/regs-intc.h
>> new file mode 100644
>> index 0000000..69d1b4a
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/regs-intc.h
>> @@ -0,0 +1,24 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * Loongson1 Interrupt register definitions.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_REGS_INTC_H
>> +#define __ASM_MACH_LOONGSON1_REGS_INTC_H
>> +
>> +#define LOONGSON1_INTC_REG(x) ((void __iomem
>> *)(LOONGSON1_INTC_BASE + n * 0x18 + x))
>> +
>> +#define LS1_INTC_INTISR(n) LOONGSON1_INTC_REG(0x0)
>> +#define LS1_INTC_INTIEN(n) LOONGSON1_INTC_REG(0x4)
>> +#define LS1_INTC_INTSET(n) LOONGSON1_INTC_REG(0x8)
>> +#define LS1_INTC_INTCLR(n) LOONGSON1_INTC_REG(0xc)
>> +#define LS1_INTC_INTPOL(n) LOONGSON1_INTC_REG(0x10)
>> +#define LS1_INTC_INTEDGE(n) LOONGSON1_INTC_REG(0x14)
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_REGS_INTC_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/regs-wdt.h
>> b/arch/mips/include/asm/mach-loongson1/regs-wdt.h
>> new file mode 100644
>> index 0000000..3e5a51a
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/regs-wdt.h
>> @@ -0,0 +1,21 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * Loongson1 Watchdog register definitions.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#ifndef __ASM_MACH_LOONGSON1_REGS_WDT_H
>> +#define __ASM_MACH_LOONGSON1_REGS_WDT_H
>> +
>> +#define LOONGSON1_WDT_REG(x) ((void __iomem
>> *)(LOONGSON1_WDT_BASE + (x)))
>> +
>> +#define LS1_WDT_EN LOONGSON1_WDT_REG(0x0)
>> +#define LS1_WDT_SET LOONGSON1_WDT_REG(0x4)
>> +#define LS1_WDT_TIMER LOONGSON1_WDT_REG(0x8)
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_REGS_WDT_H */
>> diff --git a/arch/mips/include/asm/mach-loongson1/war.h
>> b/arch/mips/include/asm/mach-loongson1/war.h
>> new file mode 100644
>> index 0000000..e3680a8
>> --- /dev/null
>> +++ b/arch/mips/include/asm/mach-loongson1/war.h
>> @@ -0,0 +1,25 @@
>> +/*
>> + * This file is subject to the terms and conditions of the GNU General
>> Public
>> + * License. See the file "COPYING" in the main directory of this archive
>> + * for more details.
>> + *
>> + * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@xxxxxxxxxxxxxx>
>> + */
>> +#ifndef __ASM_MACH_LOONGSON1_WAR_H
>> +#define __ASM_MACH_LOONGSON1_WAR_H
>> +
>> +#define R4600_V1_INDEX_ICACHEOP_WAR 0
>> +#define R4600_V1_HIT_CACHEOP_WAR 0
>> +#define R4600_V2_HIT_CACHEOP_WAR 0
>> +#define R5432_CP0_INTERRUPT_WAR 0
>> +#define BCM1250_M3_WAR 0
>> +#define SIBYTE_1956_WAR 0
>> +#define MIPS4K_ICACHE_REFILL_WAR 0
>> +#define MIPS_CACHE_SYNC_WAR 0
>> +#define TX49XX_ICACHE_INDEX_INV_WAR 0
>> +#define RM9000_CDEX_SMP_WAR 0
>> +#define ICACHE_REFILLS_WORKAROUND_WAR 0
>> +#define R10000_LLSC_WAR 0
>> +#define MIPS34K_MISSED_ITLB_WAR 0
>> +
>> +#endif /* __ASM_MACH_LOONGSON1_WAR_H */
>
> What about add a new cpu-feature-overrides.h for Loongson1, it may
> help a little to the kernel image size and boot speed.
>
> Please see arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h
> and show_cpuinfo() function defined in arch/mips/kernel/proc.c

Maybe the loongson1 CPU will be licensed by other companies in the future.
And new variants will be generated, wich will be different from the
loongson's origin.
So it is better to probe the features of CPU than to override them.

>> diff --git a/arch/mips/include/asm/module.h
>> b/arch/mips/include/asm/module.h
>> index bc01a02..b53d642 100644
>> --- a/arch/mips/include/asm/module.h
>> +++ b/arch/mips/include/asm/module.h
>> @@ -116,6 +116,8 @@ search_module_dbetables(unsigned long addr)
>> #define MODULE_PROC_FAMILY "SB1 "
>> #elif defined CONFIG_CPU_LOONGSON2
>> #define MODULE_PROC_FAMILY "LOONGSON2 "
>> +#elif defined CONFIG_CPU_LOONGSON1
>> +#define MODULE_PROC_FAMILY "LOONGSON1 "
>> #elif defined CONFIG_CPU_CAVIUM_OCTEON
>> #define MODULE_PROC_FAMILY "OCTEON "
>> #elif defined CONFIG_CPU_XLR
>> diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
>> index ebc0cd2..c886e0d 100644
>> --- a/arch/mips/kernel/cpu-probe.c
>> +++ b/arch/mips/kernel/cpu-probe.c
>> @@ -37,6 +37,8 @@
>> void (*cpu_wait)(void);
>> EXPORT_SYMBOL(cpu_wait);
>>
>> +static void __cpuinit decode_configs(struct cpuinfo_mips *c);
>> +
>> static void r3081_wait(void)
>> {
>> unsigned long cfg = read_c0_conf();
>> @@ -190,6 +192,7 @@ void __init check_wait(void)
>> case CPU_CAVIUM_OCTEON_PLUS:
>> case CPU_CAVIUM_OCTEON2:
>> case CPU_JZRISC:
>> + case CPU_LOONGSON1:
>> cpu_wait = r4k_wait;
>> break;
>>
>> @@ -635,6 +638,18 @@ static inline void cpu_probe_legacy(struct
>> cpuinfo_mips *c, unsigned int cpu)
>> MIPS_CPU_32FPR;
>> c->tlbsize = 64;
>> break;
>> + case PRID_IMP_LOONGSON1:
>> + decode_configs(c);
>> +
>> + c->cputype = CPU_LOONGSON1;
>> +
>> + switch (c->processor_id & PRID_REV_MASK) {
>> + case PRID_REV_LOONGSON1B:
>> + __cpu_name[cpu] = "Loongson 1B";
>> + break;
>> + }
>> +
>> + break;
>> }
>> }
>>
>> diff --git a/arch/mips/kernel/perf_event_mipsxx.c
>> b/arch/mips/kernel/perf_event_mipsxx.c
>> index e5ad09a..e316b0e 100644
>> --- a/arch/mips/kernel/perf_event_mipsxx.c
>> +++ b/arch/mips/kernel/perf_event_mipsxx.c
>> @@ -1062,6 +1062,12 @@ init_hw_perf_events(void)
>> mipsxxcore_pmu.irq = irq;
>> mipspmu = &mipsxxcore_pmu;
>> break;
>> + case CPU_LOONGSON1:
>> + mipsxxcore_pmu.name = "mips/loongson1";
>> + mipsxxcore_pmu.num_counters = counters;
>> + mipsxxcore_pmu.irq = irq;
>> + mipspmu = &mipsxxcore_pmu;
>> + break;
>> default:
>> pr_cont("Either hardware does not support performance "
>> "counters, or not yet implemented.\n");
>> diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
>> index 01eff7e..cd55823 100644
>> --- a/arch/mips/kernel/traps.c
>> +++ b/arch/mips/kernel/traps.c
>> @@ -1241,6 +1241,7 @@ static inline void parity_protection_init(void)
>> break;
>>
>> case CPU_5KC:
>> + case CPU_LOONGSON1:
>> write_c0_ecc(0x80000000);
>> back_to_back_c0_hazard();
>> /* Set the PE bit (bit 31) in the c0_errctl register. */
>> diff --git a/arch/mips/loongson1/Kconfig b/arch/mips/loongson1/Kconfig
>> new file mode 100644
>> index 0000000..c22ceac
>> --- /dev/null
>> +++ b/arch/mips/loongson1/Kconfig
>> @@ -0,0 +1,29 @@
>> +if MACH_LOONGSON1
>> +
>> +choice
>> + prompt "Machine Type"
>> +
>> +config LOONGSON1_LS1B
>> + bool "Loongson LS1B board"
>> + select ARCH_SPARSEMEM_ENABLE
>> + select CEVT_R4K
>> + select CSRC_R4K
>> + select SYS_HAS_CPU_LOONGSON1B
>> + select DMA_NONCOHERENT
>> + select BOOT_ELF32
>> + select IRQ_CPU
>> + select SYS_SUPPORTS_32BIT_KERNEL
>> + select SYS_SUPPORTS_LITTLE_ENDIAN
>> + select SYS_SUPPORTS_HIGHMEM
>> + select SYS_HAS_EARLY_PRINTK
>> +# select USB_ARCH_HAS_OHCI
>> +# select USB_ARCH_HAS_EHCI
>> +
>> +endchoice
>> +
>> +#config LOONGSON_SUSPEND
>> +# bool
>> +# default y
>> +# depends on CPU_SUPPORTS_CPUFREQ && SUSPEND
>> +
>
> Do we need the above lines commented with #?

Removed in the new patch.

>> +endif # MACH_LOONGSON1
>> diff --git a/arch/mips/loongson1/Makefile b/arch/mips/loongson1/Makefile
>> new file mode 100644
>> index 0000000..e9123c2
>> --- /dev/null
>> +++ b/arch/mips/loongson1/Makefile
>> @@ -0,0 +1,11 @@
>> +#
>> +# Common code for all Loongson1 based systems
>> +#
>> +
>> +obj-$(CONFIG_MACH_LOONGSON1) += common/
>> +
>> +#
>> +# Loongson LS1B board
>> +#
>> +
>> +obj-$(CONFIG_LOONGSON1_LS1B) += ls1b/
>> diff --git a/arch/mips/loongson1/Platform b/arch/mips/loongson1/Platform
>> new file mode 100644
>> index 0000000..92804c6
>> --- /dev/null
>> +++ b/arch/mips/loongson1/Platform
>> @@ -0,0 +1,7 @@
>> +cflags-$(CONFIG_CPU_LOONGSON1) += \
>> + $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA
>> -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> + -Wa,-mips32r2 -Wa,--trap
>> +
>> +platform-$(CONFIG_MACH_LOONGSON1) += loongson1/
>> +cflags-$(CONFIG_MACH_LOONGSON1) +=
>> -I$(srctree)/arch/mips/include/asm/mach-loongson1
>> +load-$(CONFIG_LOONGSON1_LS1B) += 0xffffffff80010000
>> diff --git a/arch/mips/loongson1/common/Makefile
>> b/arch/mips/loongson1/common/Makefile
>> new file mode 100644
>> index 0000000..b279770
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/Makefile
>> @@ -0,0 +1,5 @@
>> +#
>> +# Makefile for common code of loongson1 based machines.
>> +#
>> +
>> +obj-y += clock.o irq.o platform.o prom.o reset.o setup.o
>> diff --git a/arch/mips/loongson1/common/clock.c
>> b/arch/mips/loongson1/common/clock.c
>> new file mode 100644
>> index 0000000..cd8d151
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/clock.c
>> @@ -0,0 +1,165 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/module.h>
>> +#include <linux/list.h>
>> +#include <linux/mutex.h>
>> +#include <linux/clk.h>
>> +#include <linux/err.h>
>> +#include <asm/clock.h>
>> +#include <asm/time.h>
>> +
>> +#include <loongson1.h>
>> +
>> +static LIST_HEAD(clocks);
>> +static DEFINE_MUTEX(clocks_mutex);
>> +
>> +struct clk *clk_get(struct device *dev, const char *name)
>> +{
>> + struct clk *c;
>> + struct clk *ret = NULL;
>> +
>> + mutex_lock(&clocks_mutex);
>> + list_for_each_entry(c, &clocks, node) {
>> + if (!strcmp(c->name, name)) {
>> + ret = c;
>> + break;
>> + }
>> + }
>> + mutex_unlock(&clocks_mutex);
>> +
>> + return ret;
>> +}
>> +EXPORT_SYMBOL(clk_get);
>> +
>> +unsigned long clk_get_rate(struct clk *clk)
>> +{
>> + return clk->rate;
>> +}
>> +EXPORT_SYMBOL(clk_get_rate);
>> +
>> +static void pll_clk_init(struct clk *clk)
>> +{
>> + u32 pll;
>> +
>> + pll = __raw_readl(LS1_CLK_PLL_FREQ);
>> + clk->rate = (12 + (pll & 0x3f)) * 33 / 2
>> + + ((pll >>8 ) & 0x3ff) * 33 / 1024 / 2;
>> + clk->rate *= 1000000;
>> +}
>> +
>> +static void cpu_clk_init(struct clk *clk)
>> +{
>> + u32 pll, ctrl;
>> +
>> + pll = clk_get_rate(clk->parent);
>> + ctrl = __raw_readl(LS1_CLK_PLL_DIV) & DIV_CPU;
>> + clk->rate = pll / (ctrl >> DIV_CPU_SHIFT);
>> +}
>> +
>> +static void ddr_clk_init(struct clk *clk)
>> +{
>> + u32 pll, ctrl;
>> +
>> + pll = clk_get_rate(clk->parent);
>> + ctrl = __raw_readl(LS1_CLK_PLL_DIV) & DIV_DDR;
>> + clk->rate = pll / (ctrl >> DIV_DDR_SHIFT);
>> +}
>> +
>> +static void dc_clk_init(struct clk *clk)
>> +{
>> + u32 pll, ctrl;
>> +
>> + pll = clk_get_rate(clk->parent);
>> + ctrl = __raw_readl(LS1_CLK_PLL_DIV) & DIV_DC;
>> + clk->rate = pll / (ctrl >> DIV_DC_SHIFT);
>> +}
>> +
>> +static struct clk_ops pll_clk_ops = {
>> + .init = pll_clk_init,
>> +};
>> +
>> +static struct clk_ops cpu_clk_ops = {
>> + .init = cpu_clk_init,
>> +};
>> +
>> +static struct clk_ops ddr_clk_ops = {
>> + .init = ddr_clk_init,
>> +};
>> +
>> +static struct clk_ops dc_clk_ops = {
>> + .init = dc_clk_init,
>> +};
>> +
>> +static struct clk pll_clk = {
>> + .name = "pll",
>> + .ops = &pll_clk_ops,
>> +};
>> +
>> +static struct clk cpu_clk = {
>> + .name = "cpu",
>> + .parent = &pll_clk,
>> + .ops = &cpu_clk_ops,
>> +};
>> +
>> +static struct clk ddr_clk = {
>> + .name = "ddr",
>> + .parent = &pll_clk,
>> + .ops = &ddr_clk_ops,
>> +};
>> +
>> +static struct clk dc_clk = {
>> + .name = "dc",
>> + .parent = &pll_clk,
>> + .ops = &dc_clk_ops,
>> +};
>> +
>> +int clk_register(struct clk *clk)
>> +{
>> + mutex_lock(&clocks_mutex);
>> + list_add(&clk->node, &clocks);
>> + if (clk->ops->init)
>> + clk->ops->init(clk);
>> + mutex_unlock(&clocks_mutex);
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL(clk_register);
>> +
>> +static struct clk *loongson1_clks[] = {
>> + &pll_clk,
>> + &cpu_clk,
>> + &ddr_clk,
>> + &dc_clk,
>> +};
>> +
>> +int __init loongson1_clock_init(void)
>> +{
>> + int i;
>> +
>> + for (i = 0; i < ARRAY_SIZE(loongson1_clks); i++)
>> + clk_register(loongson1_clks[i]);
>> +
>> + return 0;
>> +}
>> +
>> +void __init plat_time_init(void)
>> +{
>> + struct clk *clk;
>> +
>> + /* Initialize loongson1 clocks */
>> + loongson1_clock_init();
>> +
>> + /* setup mips r4k timer */
>> + clk = clk_get(NULL, "cpu");
>> + if (IS_ERR(clk))
>> + panic("unable to get dc clock, err=%ld", PTR_ERR(clk));
>> +
>> + mips_hpt_frequency = clk_get_rate(clk) / 2;
>> +}
>> diff --git a/arch/mips/loongson1/common/irq.c
>> b/arch/mips/loongson1/common/irq.c
>> new file mode 100644
>> index 0000000..688d7b9
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/irq.c
>> @@ -0,0 +1,135 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/interrupt.h>
>> +#include <linux/irq.h>
>> +#include <asm/irq_cpu.h>
>> +
>> +#include <loongson1.h>
>> +#include <irq.h>
>> +
>> +static void loongson1_irq_ack(struct irq_data *d)
>> +{
>> + unsigned int bit = (d->irq - LOONGSON1_IRQ_BASE) & 0x1f;
>> + unsigned int n = (d->irq - LOONGSON1_IRQ_BASE) >> 5;
>> +
>> + __raw_writel(__raw_readl(LS1_INTC_INTCLR(n))
>> + | (1 << bit), LS1_INTC_INTCLR(n));
>> +}
>> +
>> +static void loongson1_irq_mask(struct irq_data *d)
>> +{
>> + unsigned int bit = (d->irq - LOONGSON1_IRQ_BASE) & 0x1f;
>> + unsigned int n = (d->irq - LOONGSON1_IRQ_BASE) >> 5;
>> +
>> + __raw_writel(__raw_readl(LS1_INTC_INTIEN(n))
>> + & ~(1 << bit), LS1_INTC_INTIEN(n));
>> +}
>> +
>> +static void loongson1_irq_mask_ack(struct irq_data *d)
>> +{
>> + unsigned int bit = (d->irq - LOONGSON1_IRQ_BASE) & 0x1f;
>> + unsigned int n = (d->irq - LOONGSON1_IRQ_BASE) >> 5;
>> +
>> + __raw_writel(__raw_readl(LS1_INTC_INTIEN(n))
>> + & ~(1 << bit), LS1_INTC_INTIEN(n));
>> + __raw_writel(__raw_readl(LS1_INTC_INTCLR(n))
>> + | (1 << bit), LS1_INTC_INTCLR(n));
>> +}
>> +
>> +static void loongson1_irq_unmask(struct irq_data *d)
>> +{
>> + unsigned int bit = (d->irq - LOONGSON1_IRQ_BASE) & 0x1f;
>> + unsigned int n = (d->irq - LOONGSON1_IRQ_BASE) >> 5;
>> +
>> + __raw_writel(__raw_readl(LS1_INTC_INTIEN(n))
>> + | (1 << bit), LS1_INTC_INTIEN(n));
>> +}
>> +
>> +static struct irq_chip loongson1_irq_chip = {
>> + .name = "LOONGSON1-INTC",
>> + .irq_ack = loongson1_irq_ack,
>> + .irq_mask = loongson1_irq_mask,
>> + .irq_mask_ack = loongson1_irq_mask_ack,
>> + .irq_unmask = loongson1_irq_unmask,
>> +};
>> +
>> +static void loongson1_irq_dispatch(int n)
>> +{
>> + u32 int_status, irq;
>> +
>> + /* Get pending sources, masked by current enables */
>> + int_status = __raw_readl(LS1_INTC_INTISR(n)) &
>> + __raw_readl(LS1_INTC_INTIEN(n));
>> +
>> + if (int_status) {
>> + irq = LOONGSON1_IRQ(n, __ffs(int_status));
>> + do_IRQ(irq);
>> + }
>> +}
>> +
>> +asmlinkage void plat_irq_dispatch(void)
>> +{
>> + unsigned int pending;
>> +
>> + pending = read_c0_cause() & read_c0_status() & ST0_IM;
>> +
>> + if (pending & CAUSEF_IP7)
>> + do_IRQ(TIMER_IRQ);
>> + else if (pending & CAUSEF_IP2)
>> + loongson1_irq_dispatch(0); /* INT0 */
>> + else if (pending & CAUSEF_IP3)
>> + loongson1_irq_dispatch(1); /* INT1 */
>> + else if (pending & CAUSEF_IP4)
>> + loongson1_irq_dispatch(2); /* INT2 */
>> + else if (pending & CAUSEF_IP5)
>> + loongson1_irq_dispatch(3); /* INT3 */
>> + else if (pending & CAUSEF_IP6)
>> + loongson1_irq_dispatch(4); /* INT4 */
>> + else
>> + spurious_interrupt();
>> +
>> +}
>> +
>> +struct irqaction cascade_irqaction = {
>> + .handler = no_action,
>> + .name = "cascade",
>> +};
>
> The short no_action handler should be unthreaded, please mark it with
> the following line.
>
> + .flags = IRQF_NO_THREAD,
>
> Please see the kernel patch "mips: i8259: Mark cascade interrupt
> non-threaded" as a reference in MIPS mailing list or patchwork sent by
> Thomas.

Done in the new patch.

>> +
>> +static void __init loongson1_irq_init(int base)
>> +{
>> + int n;
>> +
>> + /* Disable interrupts and clear pending,
>> + * setup all IRQs as high level triggered
>> + */
>> + for (n = 0; n < 4; n++) {
>> + __raw_writel(0x0, LS1_INTC_INTIEN(n));
>> + __raw_writel(0xffffffff, LS1_INTC_INTCLR(n));
>> + __raw_writel(0xffffffff, LS1_INTC_INTPOL(n));
>> + __raw_writel(0x0, LS1_INTC_INTEDGE(n));
>> + }
>> +
>> +
>> + for (n = base; n < NR_IRQS; n++) {
>> + irq_set_chip_and_handler(n, &loongson1_irq_chip,
>> + handle_level_irq);
>> + }
>> +
>> + setup_irq(INT0_IRQ, &cascade_irqaction);
>> + setup_irq(INT1_IRQ, &cascade_irqaction);
>> + setup_irq(INT2_IRQ, &cascade_irqaction);
>> + setup_irq(INT3_IRQ, &cascade_irqaction);
>> +}
>> +
>> +void __init arch_init_irq(void)
>> +{
>> + mips_cpu_irq_init();
>> + loongson1_irq_init(LOONGSON1_IRQ_BASE);
>> +}
>> diff --git a/arch/mips/loongson1/common/platform.c
>> b/arch/mips/loongson1/common/platform.c
>> new file mode 100644
>> index 0000000..4ea477d
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/platform.c
>> @@ -0,0 +1,50 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/err.h>
>> +#include <linux/serial_8250.h>
>> +
>> +#include <loongson1.h>
>> +
>> +#define LOONGSON1_UART_PORT(_id) \
>> + { \
>> + .mapbase = LOONGSON1_UART ## _id ## _BASE, \
>> + .membase = (void *)(LOONGSON1_UART ## _id ##
>> _BASE), \
>> + .irq = LOONGSON1_UART ## _id ## _IRQ, \
>> + .iotype = UPIO_MEM, \
>> + .flags = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE, \
>> + .type = PORT_16550A, \
>> + }
>> +
>> +static struct plat_serial8250_port loongson1_serial8250_port[] = {
>> + LOONGSON1_UART_PORT(0),
>> + {},
>> +};
>> +
>> +struct platform_device loongson1_uart_device = {
>> + .name = "serial8250",
>> + .id = PLAT8250_DEV_PLATFORM,
>> + .dev = {
>> + .platform_data = loongson1_serial8250_port,
>> + },
>> +};
>> +
>> +void __init loongson1_serial_setup(void)
>> +{
>> + struct clk *clk;
>> + struct plat_serial8250_port *p;
>> +
>> + clk = clk_get(NULL, "dc");
>> + if (IS_ERR(clk))
>> + panic("unable to get dc clock, err=%ld", PTR_ERR(clk));
>> +
>> + for (p = loongson1_serial8250_port; p->flags != 0; ++p)
>> + p->uartclk = clk_get_rate(clk);
>> +}
>> diff --git a/arch/mips/loongson1/common/prom.c
>> b/arch/mips/loongson1/common/prom.c
>> new file mode 100644
>> index 0000000..a7422f4
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/prom.c
>> @@ -0,0 +1,89 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * Modified from arch/mips/pnx833x/common/prom.c.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/serial_reg.h>
>> +#include <asm/bootinfo.h>
>> +
>> +#include <loongson1.h>
>> +#include <prom.h>
>> +
>> +int prom_argc;
>> +char **prom_argv, **prom_envp;
>> +unsigned long memsize, highmemsize;
>> +
>> +char *prom_getenv(char *envname)
>> +{
>> + extern char **prom_envp;
>> + char **env = prom_envp;
>> + int i;
>> +
>> + i = strlen(envname);
>> +
>> + while (*env) {
>> + if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=')
>> + return *env + i + 1;
>> + env++;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static inline unsigned long env_or_default(char *env, unsigned long dfl)
>> +{
>> + char *str = prom_getenv(env);
>> + return str ? simple_strtol(str, 0, 0) : dfl;
>> +}
>> +
>> +void __init prom_init_cmdline(void)
>> +{
>> + char *c = &(arcs_cmdline[0]);
>> + int i;
>> +
>> + for (i = 1; i < prom_argc; i++) {
>> + strcpy(c, prom_argv[i]);
>> + c += strlen(prom_argv[i]);
>> + if (i < prom_argc-1)
>> + *c++ = ' ';
>> + }
>> + *c = 0;
>> +}
>> +
>> +void __init prom_init(void)
>> +{
>> + prom_argc = fw_arg0;
>> + prom_argv = (char **)fw_arg1;
>> + prom_envp = (char **)fw_arg2;
>> +
>> + prom_init_cmdline();
>> +
>> + memsize = env_or_default("memsize", DEFAULT_MEMSIZE);
>> + highmemsize = env_or_default("highmemsize", 0x0);
>> +}
>> +
>> +void __init prom_free_prom_memory(void)
>> +{
>> +}
>> +
>> +#define UART_BASE LOONGSON1_UART0_BASE
>> +#define PORT(base, offset) (u8 *)(base + offset)
>> +
>> +void __init prom_putchar(char c)
>> +{
>> + int timeout;
>> +
>> + timeout = 1024;
>> +
>> + while (((readb(PORT(UART_BASE, UART_LSR)) & UART_LSR_THRE) == 0)
>> + && (timeout-- > 0))
>> + ;
>> +
>> + writeb(c, PORT(UART_BASE, UART_TX));
>> +}
>> diff --git a/arch/mips/loongson1/common/reset.c
>> b/arch/mips/loongson1/common/reset.c
>> new file mode 100644
>> index 0000000..75f550f
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/reset.c
>> @@ -0,0 +1,46 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/io.h>
>> +#include <linux/pm.h>
>> +#include <asm/reboot.h>
>> +
>> +#include <loongson1.h>
>> +
>> +static void loongson1_restart(char *command)
>> +{
>> + __raw_writel(0x1, LS1_WDT_EN);
>> + __raw_writel(0x5000000, LS1_WDT_TIMER);
>> + __raw_writel(0x1, LS1_WDT_SET);
>> +}
>> +
>> +static void loongson1_halt(void)
>> +{
>> + pr_notice("\n\n** You can safely turn off the power now **\n\n");
>> + while (1) {
>> + if (cpu_wait)
>> + cpu_wait();
>> + }
>> +}
>> +
>> +static void loongson1_power_off(void)
>> +{
>> + loongson1_halt();
>> +}
>> +
>> +static int __init loongson1_reboot_setup(void)
>> +{
>> + _machine_restart = loongson1_restart;
>> + _machine_halt = loongson1_halt;
>> + pm_power_off = loongson1_power_off;
>> +
>> + return 0;
>> +}
>> +
>> +arch_initcall(loongson1_reboot_setup);
>> diff --git a/arch/mips/loongson1/common/setup.c
>> b/arch/mips/loongson1/common/setup.c
>> new file mode 100644
>> index 0000000..62128cc
>> --- /dev/null
>> +++ b/arch/mips/loongson1/common/setup.c
>> @@ -0,0 +1,29 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <asm/bootinfo.h>
>> +
>> +#include <prom.h>
>> +
>> +void __init plat_mem_setup(void)
>> +{
>> + add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
>> +}
>> +
>> +const char *get_system_type(void)
>> +{
>> + unsigned int processor_id = (&current_cpu_data)->processor_id;
>> +
>> + switch (processor_id & PRID_REV_MASK) {
>> + case PRID_REV_LOONGSON1B:
>> + return "LOONGSON LS1B";
>> + default:
>> + return "LOONGSON (unknown)";
>> + }
>> +}
>> diff --git a/arch/mips/loongson1/ls1b/Makefile
>> b/arch/mips/loongson1/ls1b/Makefile
>> new file mode 100644
>> index 0000000..891eac4
>> --- /dev/null
>> +++ b/arch/mips/loongson1/ls1b/Makefile
>> @@ -0,0 +1,5 @@
>> +#
>> +# Makefile for loongson1B based machines.
>> +#
>> +
>> +obj-y += board.o
>> diff --git a/arch/mips/loongson1/ls1b/board.c
>> b/arch/mips/loongson1/ls1b/board.c
>> new file mode 100644
>> index 0000000..b1a602f
>> --- /dev/null
>> +++ b/arch/mips/loongson1/ls1b/board.c
>> @@ -0,0 +1,30 @@
>> +/*
>> + * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@xxxxxxxxx>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> it
>> + * under the terms of the GNU General Public License as published by
>> the
>> + * Free Software Foundation; either version 2 of the License, or (at
>> your
>> + * option) any later version.
>> + */
>> +
>> +#include <platform.h>
>> +
>> +#include <linux/serial_8250.h>
>> +#include <loongson1.h>
>> +
>> +static struct platform_device *loongson1_platform_devices[] __initdata =
>> {
>> + &loongson1_uart_device,
>> +};
>> +
>> +static int __init loongson1_platform_init(void)
>> +{
>> + int err;
>> +
>> + loongson1_serial_setup();
>> +
>> + err = platform_add_devices(loongson1_platform_devices,
>> +
>> ARRAY_SIZE(loongson1_platform_devices));
>> + return err;
>> +}
>> +
>> +arch_initcall(loongson1_platform_init);
>> diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
>> index d1f2d4c..99216f0 100644
>> --- a/arch/mips/oprofile/common.c
>> +++ b/arch/mips/oprofile/common.c
>> @@ -89,6 +89,7 @@ int __init oprofile_arch_init(struct oprofile_operations
>> *ops)
>> case CPU_R10000:
>> case CPU_R12000:
>> case CPU_R14000:
>> + case CPU_LOONGSON1:
>> lmodel = &op_model_mipsxx_ops;
>> break;
>>
>> diff --git a/arch/mips/oprofile/op_model_mipsxx.c
>> b/arch/mips/oprofile/op_model_mipsxx.c
>> index 54759f1..03be670 100644
>> --- a/arch/mips/oprofile/op_model_mipsxx.c
>> +++ b/arch/mips/oprofile/op_model_mipsxx.c
>> @@ -365,6 +365,10 @@ static int __init mipsxx_init(void)
>> op_model_mipsxx_ops.cpu_type = "mips/sb1";
>> break;
>>
>> + case CPU_LOONGSON1:
>> + op_model_mipsxx_ops.cpu_type = "mips/loongson1";
>> + break;
>> +
>> default:
>> printk(KERN_ERR "Profiling unsupported for this CPU\n");
>>
>> --
>> 1.7.1
>>
>>
>
> It may still be possible to reduce duplications if we consider
> applying dtb for Loongson ;)

Now, the only device included by this patch is UART.
Could we do dtb support in next step?

> Best Regards,
> Wu Zhangjin
>

--
Best Regards!
Kelvin
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