Re: [Qemu-devel] [PATCH v4 6/7] MIPS: Initial support of fulong mini pc (machine construction)

[chen huacai <zltjiangshi@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1555 bytes --]

Loongson-specific instructions haven't implememted now. So, if want to
boot a linux kernel, we should built a 32bit one and drop
-march=loongson2e compiler flags. For simplification, please use the
kernel patch (for 2.6.33) in the attachment and then use
arch/mips/configs/fuloong2e_defconfig to compile a kernel. Besides,
the disk image I used is debian-lenny built by you which is available
at http://people.debian.org/~aurel32/qemu/mipsel/debian_lenny_mipsel_small.qcow2.

On Mon, Jun 21, 2010 at 6:39 AM, Aurelien Jarno <aurelien@aurel32.net> wrote:
> All the patches except the PMON one seems fine, but I am unable to boot
> a kernel. I had to add support for the missing Godson integer
> instructions but the kernel (I tried a 2.6.33 one) goes into panic
> during the boot:
>
> [    0.724000] Checking for the daddi bug... no.
> [    0.892000] Cache error exception:
> [    0.892000] cp0_errorepc == 0000000000000000
> [    0.892000] c0_cacheerr == 00000000
> [    0.892000] Decoded c0_cacheerr: primary cache fault in insn reference.
> [    0.892000] Error bits:
> [    0.892000] IDX: 0x00000000
> [    0.892000] Kernel panic - not syncing: Can't handle the cache error!
>
> I got this problem both booting the kernel directly and via PMON. Is
> there any other patches missing to be able to use the Fulong 2E
> emulation?
>
> --
> Aurelien Jarno                          GPG: 1024D/F1BCDB73
> aurelien@aurel32.net                 http://www.aurel32.net
>



-- 
Huacai Chen

[-- Attachment #2: 2.6.33.3-forqemu.patch --]
[-- Type: application/octet-stream, Size: 17559 bytes --]

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 1893efd..a3b1d60 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -133,7 +133,7 @@ cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
 # only gcc >= 4.4 have the loongson-specific support
 cflags-$(CONFIG_CPU_LOONGSON2)	+= -Wa,--trap
 cflags-$(CONFIG_CPU_LOONGSON2E) += \
-	$(call cc-option,-march=loongson2e,-march=r4600)
+	$(call cc-option,-march=r4600)
 cflags-$(CONFIG_CPU_LOONGSON2F) += \
 	$(call cc-option,-march=loongson2f,-march=r4600)
 
diff --git a/arch/mips/configs/fuloong2e_defconfig b/arch/mips/configs/fuloong2e_defconfig
index a09dd03..584fb20 100644
--- a/arch/mips/configs/fuloong2e_defconfig
+++ b/arch/mips/configs/fuloong2e_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.32-rc4
-# Fri Oct 16 13:18:01 2009
+# Linux kernel version: 2.6.33.3
+# Wed May  5 11:15:29 2010
 #
 CONFIG_MIPS=y
 
@@ -27,6 +27,7 @@ CONFIG_MACH_LOONGSON=y
 # 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
@@ -49,6 +50,8 @@ CONFIG_MACH_LOONGSON=y
 # CONFIG_ALCHEMY_GPIO_INDIRECT is not set
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
 CONFIG_LEMOTE_FULOONG2E=y
+# CONFIG_LEMOTE_MACH2F is not set
+CONFIG_LOONGSON_UART_BASE=y
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 # CONFIG_ARCH_HAS_ILOG2_U32 is not set
 # CONFIG_ARCH_HAS_ILOG2_U64 is not set
@@ -67,7 +70,6 @@ CONFIG_CSRC_R4K_LIB=y
 CONFIG_CSRC_R4K=y
 CONFIG_DMA_NONCOHERENT=y
 CONFIG_DMA_NEED_PCI_MAP_STATE=y
-CONFIG_EARLY_PRINTK=y
 CONFIG_SYS_HAS_EARLY_PRINTK=y
 CONFIG_I8259=y
 # CONFIG_NO_IOPORT is not set
@@ -84,6 +86,7 @@ CONFIG_MIPS_L1_CACHE_SHIFT=5
 # CPU selection
 #
 CONFIG_CPU_LOONGSON2E=y
+# CONFIG_CPU_LOONGSON2F is not set
 # CONFIG_CPU_MIPS32_R1 is not set
 # CONFIG_CPU_MIPS32_R2 is not set
 # CONFIG_CPU_MIPS64_R1 is not set
@@ -117,8 +120,8 @@ CONFIG_CPU_SUPPORTS_64BIT_KERNEL=y
 #
 # Kernel type
 #
-# CONFIG_32BIT is not set
-CONFIG_64BIT=y
+CONFIG_32BIT=y
+# CONFIG_64BIT is not set
 # CONFIG_PAGE_SIZE_4KB is not set
 # CONFIG_PAGE_SIZE_8KB is not set
 CONFIG_PAGE_SIZE_16KB=y
@@ -132,9 +135,9 @@ CONFIG_CPU_HAS_WB=y
 CONFIG_CPU_HAS_SYNC=y
 CONFIG_GENERIC_HARDIRQS=y
 CONFIG_GENERIC_IRQ_PROBE=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_SELECT_MEMORY_MODEL=y
 # CONFIG_FLATMEM_MANUAL is not set
@@ -143,17 +146,10 @@ CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_SPARSEMEM=y
 CONFIG_HAVE_MEMORY_PRESENT=y
 CONFIG_SPARSEMEM_STATIC=y
-
-#
-# Memory hotplug is currently incompatible with Software Suspend
-#
-CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
-CONFIG_PHYS_ADDR_T_64BIT=y
+# CONFIG_PHYS_ADDR_T_64BIT is not set
 CONFIG_ZONE_DMA_FLAG=0
 CONFIG_VIRT_TO_BUS=y
-CONFIG_HAVE_MLOCK=y
-CONFIG_HAVE_MLOCKED_PAGE_BIT=y
 # CONFIG_KSM is not set
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
 CONFIG_TICK_ONESHOT=y
@@ -190,9 +186,11 @@ CONFIG_LOCALVERSION="-fuloong2e"
 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_SWAP=y
 CONFIG_SYSVIPC=y
 CONFIG_SYSVIPC_SYSCTL=y
@@ -208,8 +206,9 @@ CONFIG_BSD_PROCESS_ACCT=y
 #
 CONFIG_TREE_RCU=y
 # CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_TINY_RCU is not set
 # CONFIG_RCU_TRACE is not set
-CONFIG_RCU_FANOUT=64
+CONFIG_RCU_FANOUT=32
 # CONFIG_RCU_FANOUT_EXACT is not set
 # CONFIG_TREE_RCU_TRACE is not set
 CONFIG_IKCONFIG=y
@@ -258,16 +257,15 @@ CONFIG_SLAB=y
 # CONFIG_SLUB is not set
 # CONFIG_SLOB is not set
 CONFIG_PROFILING=y
-CONFIG_TRACEPOINTS=y
 CONFIG_OPROFILE=m
 CONFIG_HAVE_OPROFILE=y
-CONFIG_HAVE_SYSCALL_WRAPPERS=y
 
 #
 # GCOV-based kernel profiling
 #
 # CONFIG_GCOV_KERNEL is not set
 CONFIG_SLOW_WORK=y
+# CONFIG_SLOW_WORK_DEBUG is not set
 CONFIG_HAVE_GENERIC_DMA_COHERENT=y
 CONFIG_SLABINFO=y
 CONFIG_RT_MUTEXES=y
@@ -279,22 +277,49 @@ CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_MODVERSIONS is not set
 # CONFIG_MODULE_SRCVERSION_ALL is not set
 CONFIG_BLOCK=y
+CONFIG_LBDAF=y
 CONFIG_BLK_DEV_BSG=y
 # CONFIG_BLK_DEV_INTEGRITY is not set
-CONFIG_BLOCK_COMPAT=y
 
 #
 # IO Schedulers
 #
 CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_AS=y
 CONFIG_IOSCHED_DEADLINE=y
 CONFIG_IOSCHED_CFQ=y
-# CONFIG_DEFAULT_AS is not set
 # 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=y
 
 #
@@ -319,12 +344,7 @@ CONFIG_BINFMT_ELF=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 # CONFIG_HAVE_AOUT is not set
 CONFIG_BINFMT_MISC=y
-CONFIG_MIPS32_COMPAT=y
-CONFIG_COMPAT=y
-CONFIG_SYSVIPC_COMPAT=y
-CONFIG_MIPS32_O32=y
-CONFIG_MIPS32_N32=y
-CONFIG_BINFMT_ELF32=y
+CONFIG_TRAD_SIGNALS=y
 
 #
 # Power management options
@@ -337,10 +357,9 @@ CONFIG_PM_SLEEP=y
 # CONFIG_SUSPEND is not set
 CONFIG_HIBERNATION_NVS=y
 CONFIG_HIBERNATION=y
-CONFIG_PM_STD_PARTITION="/dev/hda3"
+CONFIG_PM_STD_PARTITION="/dev/hda2"
 # CONFIG_PM_RUNTIME is not set
 CONFIG_NET=y
-CONFIG_COMPAT_NETLINK_MESSAGES=y
 
 #
 # Networking options
@@ -483,27 +502,15 @@ CONFIG_NET_CLS_ROUTE=y
 # Network testing
 #
 # CONFIG_NET_PKTGEN is not set
-# CONFIG_NET_DROP_MONITOR 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=y
-# CONFIG_CFG80211 is not set
-CONFIG_CFG80211_DEFAULT_PS_VALUE=0
-CONFIG_WIRELESS_OLD_REGULATORY=y
-CONFIG_WIRELESS_EXT=y
-CONFIG_WIRELESS_EXT_SYSFS=y
-# CONFIG_LIB80211 is not set
-
-#
-# CFG80211 needs to be enabled for MAC80211
-#
+# CONFIG_WIRELESS is not set
 # CONFIG_WIMAX is not set
 # CONFIG_RFKILL is not set
-CONFIG_NET_9P=m
-# CONFIG_NET_9P_DEBUG is not set
+# CONFIG_NET_9P is not set
 
 #
 # Device Drivers
@@ -617,6 +624,10 @@ CONFIG_BLK_DEV=y
 # CONFIG_BLK_DEV_COW_COMMON is not set
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_CRYPTOLOOP=m
+
+#
+# DRBD disabled because PROC_FS, INET or CONNECTOR not selected
+#
 # CONFIG_BLK_DEV_NBD is not set
 # CONFIG_BLK_DEV_SX8 is not set
 # CONFIG_BLK_DEV_UB is not set
@@ -755,7 +766,7 @@ CONFIG_SCSI_WAIT_SCAN=m
 #
 
 #
-# See the help texts for more information.
+# The newer stack is recommended.
 #
 # CONFIG_FIREWIRE is not set
 # CONFIG_IEEE1394 is not set
@@ -798,6 +809,7 @@ CONFIG_MII=y
 # CONFIG_SMC91X is not set
 # CONFIG_DM9000 is not set
 # CONFIG_ETHOC is not set
+# CONFIG_SMSC911X is not set
 # CONFIG_NET_VENDOR_RACAL is not set
 # CONFIG_DNET is not set
 # CONFIG_NET_TULIP is not set
@@ -826,7 +838,7 @@ CONFIG_NET_PCI=y
 # CONFIG_FEALNX is not set
 # CONFIG_NATSEMI is not set
 # CONFIG_NE2K_PCI is not set
-# CONFIG_8139CP is not set
+CONFIG_8139CP=m
 CONFIG_8139TOO=y
 # CONFIG_8139TOO_PIO is not set
 # CONFIG_8139TOO_TUNE_TWISTER is not set
@@ -887,9 +899,7 @@ CONFIG_CHELSIO_T3_DEPENDS=y
 # CONFIG_SFC is not set
 # CONFIG_BE2NET is not set
 # CONFIG_TR is not set
-CONFIG_WLAN=y
-# CONFIG_WLAN_PRE80211 is not set
-# CONFIG_WLAN_80211 is not set
+# CONFIG_WLAN is not set
 
 #
 # Enable WiMAX (Networking options) to see the WiMAX drivers
@@ -907,25 +917,13 @@ CONFIG_WLAN=y
 # CONFIG_WAN is not set
 # CONFIG_FDDI is not set
 # CONFIG_HIPPI is not set
-CONFIG_PPP=m
-CONFIG_PPP_MULTILINK=y
-CONFIG_PPP_FILTER=y
-CONFIG_PPP_ASYNC=m
-CONFIG_PPP_SYNC_TTY=m
-CONFIG_PPP_DEFLATE=m
-CONFIG_PPP_BSDCOMP=m
-CONFIG_PPP_MPPE=m
-CONFIG_PPPOE=m
-CONFIG_PPPOL2TP=m
-CONFIG_SLIP=m
-CONFIG_SLIP_COMPRESSED=y
-CONFIG_SLHC=m
-CONFIG_SLIP_SMART=y
-CONFIG_SLIP_MODE_SLIP6=y
-CONFIG_NET_FC=y
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NET_FC is not set
 # CONFIG_NETCONSOLE is not set
 # CONFIG_NETPOLL is not set
 # CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_VMXNET3 is not set
 # CONFIG_ISDN is not set
 # CONFIG_PHONE is not set
 
@@ -935,6 +933,7 @@ CONFIG_NET_FC=y
 CONFIG_INPUT=y
 CONFIG_INPUT_FF_MEMLESS=y
 # CONFIG_INPUT_POLLDEV is not set
+# CONFIG_INPUT_SPARSEKMAP is not set
 
 #
 # Userland interfaces
@@ -992,6 +991,7 @@ CONFIG_SERIO_SERPORT=y
 # CONFIG_SERIO_PCIPS2 is not set
 CONFIG_SERIO_LIBPS2=y
 # CONFIG_SERIO_RAW is not set
+# CONFIG_SERIO_ALTERA_PS2 is not set
 # CONFIG_GAMEPORT is not set
 
 #
@@ -1029,7 +1029,6 @@ CONFIG_LEGACY_PTY_COUNT=256
 # CONFIG_IPMI_HANDLER is not set
 CONFIG_HW_RANDOM=y
 # CONFIG_HW_RANDOM_TIMERIOMEM is not set
-CONFIG_RTC=y
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
 # CONFIG_APPLICOM is not set
@@ -1041,6 +1040,7 @@ CONFIG_I2C_BOARDINFO=y
 CONFIG_I2C_COMPAT=y
 CONFIG_I2C_CHARDEV=m
 CONFIG_I2C_HELPER_AUTO=y
+CONFIG_I2C_ALGOBIT=m
 
 #
 # I2C Hardware Bus support
@@ -1078,11 +1078,6 @@ CONFIG_I2C_VIAPRO=m
 # CONFIG_I2C_TINY_USB is not set
 
 #
-# Graphics adapter I2C/DDC channel drivers
-#
-# CONFIG_I2C_VOODOO3 is not set
-
-#
 # Other I2C/SMBus bus drivers
 #
 # CONFIG_I2C_ELEKTOR is not set
@@ -1093,7 +1088,6 @@ CONFIG_I2C_VIAPRO=m
 #
 # Miscellaneous I2C Chip support
 #
-# CONFIG_DS1682 is not set
 # CONFIG_SENSORS_TSL2550 is not set
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEBUG_ALGO is not set
@@ -1125,7 +1119,6 @@ CONFIG_SSB_POSSIBLE=y
 # CONFIG_HTC_PASIC3 is not set
 # CONFIG_MFD_TMIO is not set
 # CONFIG_MFD_WM8400 is not set
-# CONFIG_MFD_WM831X is not set
 # CONFIG_MFD_WM8350_I2C is not set
 # CONFIG_MFD_PCF50633 is not set
 # CONFIG_AB3100_CORE is not set
@@ -1136,7 +1129,16 @@ CONFIG_SSB_POSSIBLE=y
 # Graphics support
 #
 CONFIG_VGA_ARB=y
-# CONFIG_DRM is not set
+CONFIG_DRM=m
+CONFIG_DRM_KMS_HELPER=m
+CONFIG_DRM_TTM=m
+# CONFIG_DRM_TDFX is not set
+CONFIG_DRM_R128=m
+CONFIG_DRM_RADEON=m
+# CONFIG_DRM_RADEON_KMS is not set
+# CONFIG_DRM_MGA is not set
+# CONFIG_DRM_VIA is not set
+# CONFIG_DRM_SAVAGE is not set
 # CONFIG_VGASTATE is not set
 CONFIG_VIDEO_OUTPUT_CONTROL=m
 CONFIG_FB=y
@@ -1161,7 +1163,7 @@ CONFIG_FB_MODE_HELPERS=y
 #
 # Frame buffer hardware drivers
 #
-# CONFIG_FB_CIRRUS is not set
+CONFIG_FB_CIRRUS=m
 # CONFIG_FB_PM2 is not set
 # CONFIG_FB_CYBER2000 is not set
 # CONFIG_FB_ASILIANT is not set
@@ -1174,8 +1176,12 @@ CONFIG_FB_RADEON=y
 # CONFIG_FB_RADEON_I2C is not set
 CONFIG_FB_RADEON_BACKLIGHT=y
 # CONFIG_FB_RADEON_DEBUG is not set
-# CONFIG_FB_ATY128 is not set
-# CONFIG_FB_ATY is not set
+CONFIG_FB_ATY128=m
+CONFIG_FB_ATY128_BACKLIGHT=y
+CONFIG_FB_ATY=m
+# CONFIG_FB_ATY_CT is not set
+# CONFIG_FB_ATY_GX is not set
+CONFIG_FB_ATY_BACKLIGHT=y
 # CONFIG_FB_S3 is not set
 # CONFIG_FB_SAVAGE is not set
 # CONFIG_FB_SIS is not set
@@ -1208,7 +1214,8 @@ CONFIG_BACKLIGHT_GENERIC=y
 #
 # Console display driver support
 #
-# CONFIG_VGA_CONSOLE is not set
+CONFIG_VGA_CONSOLE=y
+# CONFIG_VGACON_SOFT_SCROLLBACK is not set
 # CONFIG_MDA_CONSOLE is not set
 CONFIG_DUMMY_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
@@ -1233,7 +1240,6 @@ CONFIG_SND_PCM_OSS=m
 CONFIG_SND_PCM_OSS_PLUGINS=y
 CONFIG_SND_SEQUENCER_OSS=y
 # CONFIG_SND_HRTIMER is not set
-# CONFIG_SND_RTCTIMER is not set
 # CONFIG_SND_DYNAMIC_MINORS is not set
 CONFIG_SND_SUPPORT_OLD_API=y
 CONFIG_SND_VERBOSE_PROCFS=y
@@ -1271,6 +1277,7 @@ CONFIG_SND_PCI=y
 # CONFIG_SND_OXYGEN is not set
 # CONFIG_SND_CS4281 is not set
 # CONFIG_SND_CS46XX is not set
+# CONFIG_SND_CS5535AUDIO is not set
 # CONFIG_SND_CTXFI is not set
 # CONFIG_SND_DARLA20 is not set
 # CONFIG_SND_GINA20 is not set
@@ -1466,7 +1473,61 @@ CONFIG_USB_VST=m
 # CONFIG_NEW_LEDS is not set
 # CONFIG_ACCESSIBILITY is not set
 # CONFIG_INFINIBAND is not set
-# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_LIB=m
+CONFIG_RTC_CLASS=m
+
+#
+# RTC interfaces
+#
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+# CONFIG_RTC_DRV_TEST is not set
+
+#
+# I2C RTC drivers
+#
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1374 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
+# CONFIG_RTC_DRV_BQ32K is not set
+# CONFIG_RTC_DRV_S35390A is not set
+# CONFIG_RTC_DRV_FM3130 is not set
+# CONFIG_RTC_DRV_RX8581 is not set
+# CONFIG_RTC_DRV_RX8025 is not set
+
+#
+# SPI RTC drivers
+#
+
+#
+# Platform RTC drivers
+#
+# CONFIG_RTC_DRV_CMOS is not set
+# CONFIG_RTC_DRV_DS1286 is not set
+# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_M48T35 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_MSM6242 is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
+# CONFIG_RTC_DRV_RP5C01 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+
+#
+# on-CPU RTC drivers
+#
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 CONFIG_UIO=m
@@ -1487,22 +1548,20 @@ CONFIG_UIO_CIF=m
 # File systems
 #
 CONFIG_EXT2_FS=y
-# CONFIG_EXT2_FS_XATTR is not set
+CONFIG_EXT2_FS_XATTR=y
+# CONFIG_EXT2_FS_POSIX_ACL is not set
+# CONFIG_EXT2_FS_SECURITY is not set
 CONFIG_EXT2_FS_XIP=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
-# CONFIG_EXT3_FS_XATTR is not set
-CONFIG_EXT4_FS=m
-CONFIG_EXT4_FS_XATTR=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-# CONFIG_EXT4_DEBUG is not set
+CONFIG_EXT3_FS_XATTR=y
+# CONFIG_EXT3_FS_POSIX_ACL is not set
+# CONFIG_EXT3_FS_SECURITY is not set
+# CONFIG_EXT4_FS is not set
 CONFIG_FS_XIP=y
 CONFIG_JBD=y
 # CONFIG_JBD_DEBUG is not set
-CONFIG_JBD2=m
-# CONFIG_JBD2_DEBUG is not set
-CONFIG_FS_MBCACHE=m
+CONFIG_FS_MBCACHE=y
 CONFIG_REISERFS_FS=m
 # CONFIG_REISERFS_CHECK is not set
 # CONFIG_REISERFS_PROC_INFO is not set
@@ -1616,7 +1675,6 @@ CONFIG_CIFS_EXPERIMENTAL=y
 # CONFIG_NCP_FS is not set
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
-# CONFIG_9P_FS is not set
 
 #
 # Partition Types
@@ -1628,7 +1686,7 @@ CONFIG_PARTITION_ADVANCED=y
 # CONFIG_ATARI_PARTITION is not set
 # CONFIG_MAC_PARTITION is not set
 CONFIG_MSDOS_PARTITION=y
-# CONFIG_BSD_DISKLABEL is not set
+CONFIG_BSD_DISKLABEL=y
 # CONFIG_MINIX_SUBPARTITION is not set
 # CONFIG_SOLARIS_X86_PARTITION is not set
 # CONFIG_UNIXWARE_DISKLABEL is not set
@@ -1695,21 +1753,22 @@ CONFIG_FRAME_WARN=2048
 CONFIG_DEBUG_FS=y
 # CONFIG_HEADERS_CHECK is not set
 # CONFIG_DEBUG_KERNEL is not set
-CONFIG_STACKTRACE=y
 # CONFIG_DEBUG_MEMORY_INIT is not set
 # CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_SYSCTL_SYSCALL_CHECK=y
-CONFIG_NOP_TRACER=y
+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_RING_BUFFER=y
-CONFIG_EVENT_TRACING=y
-CONFIG_CONTEXT_SWITCH_TRACER=y
 CONFIG_RING_BUFFER_ALLOW_SWAP=y
-CONFIG_TRACING=y
 CONFIG_TRACING_SUPPORT=y
 # CONFIG_FTRACE is not set
 # CONFIG_DYNAMIC_DEBUG is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_EARLY_PRINTK=y
 # CONFIG_CMDLINE_BOOL is not set
 
 #
@@ -1718,7 +1777,11 @@ CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY is not set
 # CONFIG_SECURITYFS is not set
-CONFIG_SECURITY_FILE_CAPABILITIES=y
+# CONFIG_DEFAULT_SECURITY_SELINUX is not set
+# CONFIG_DEFAULT_SECURITY_SMACK is not set
+# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
 CONFIG_CRYPTO=y
 
 #
@@ -1819,7 +1882,7 @@ CONFIG_CRYPTO_LZO=m
 #
 CONFIG_CRYPTO_ANSI_CPRNG=m
 # CONFIG_CRYPTO_HW is not set
-CONFIG_BINARY_PRINTF=y
+# CONFIG_BINARY_PRINTF is not set
 
 #
 # Library routines
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index 0b2450c..164b1d2 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -144,9 +144,14 @@ int c0_compare_int_usable(void)
 	while ((int)(read_c0_count() - cnt) <= 0)
 		;	/* Wait for expiry  */
 
-	compare_change_hazard();
-	if (!c0_compare_int_pending())
-		return 0;
+	while(1){
+		compare_change_hazard();
+//		if (!c0_compare_int_pending())
+//			return 0;
+        if (c0_compare_int_pending())
+            break;
+
+	}
 
 	write_c0_compare(read_c0_count());
 	compare_change_hazard();