OKMX6Q-C板子烧写了litmus内核（基于linux4.9），在启动过程中卡死
卡死在最后一行
部分log
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Registering LITMUS^RT plugin PSN-EDF.
Registering LITMUS^RT plugin P-FP.
Registering LITMUS^RT plugin PFAIR.
Allocated 512 sched_trace_xxx() events per CPU (buffer size: 12832 bytes)
Initializing Feather-Trace per-cpu overhead tracing device.
Initializing Feather-Trace per-cpu message overhead tracing device.
Registering LITMUS^RT plugin P-RES.
imx-weim 21b8000.weim: Driver registered.
backlight-lvds supply power not found, using dummy regulator
imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2
imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware
pfuze100-regulator 1-0008: Full layer: 2, Metal layer: 1
pfuze100-regulator 1-0008: FAB: 0, FIN: 0
pfuze100-regulator 1-0008: pfuze100 found.
usb_otg_vbus: supplied by SWBST
usb_h1_vbus: supplied by SWBST
2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 26, base_baud = 5000000) is a IMX
console [ttymxc0] enabled
[drm] Initialized
brd: module loaded
loop: module loaded
ahci-imx 2200000.sata: fsl,transmit-level-mV not specified, using 00000024
ahci-imx 2200000.sata: fsl,transmit-boost-mdB not specified, using 00000480
ahci-imx 2200000.sata: fsl,transmit-atten-16ths not specified, using 00002000
ahci-imx 2200000.sata: fsl,receive-eq-mdB not specified, using 05000000
ahci-imx 2200000.sata: SSS flag set, parallel bus scan disabled
ahci-imx 2200000.sata: AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl platform mode
ahci-imx 2200000.sata: flags: ncq sntf stag pm led clo only pmp pio slum part ccc apst
scsi host0: ahci-imx
ata1: SATA max UDMA/133 mmio [mem 0x02200000-0x02203fff] port 0x100 irq 72
m25p80 spi0.0: unrecognized JEDEC id bytes: 00, 00, 00
spi_imx 2008000.ecspi: probed
libphy: Fixed MDIO Bus: probed
2188000.ethernet supply phy not found, using dummy regulator
pps pps0: new PPS source ptp0
libphy: fec_enet_mii_bus: probed
fec 2188000.ethernet eth0: registered PHC device 0
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-mxc: Freescale On-Chip EHCI Host driver
usbcore: registered new interface driver usb-storage
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
Mass Storage Function, version: 2009/09/11
LUN: removable file: (no medium)
no file given for LUN0
g_mass_storage ci_hdrc.0: failed to start g_mass_storage: -22
mousedev: PS/2 mouse device common for all mice
egalax_ts 2-0004: Failed to read firmware version
snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered 20cc000.snvs:snvs-r as rtc0
i2c /dev entries driver
IR NEC protocol handler initialized
IR RC5(x/sz) protocol handler initialized
IR RC6 protocol handler initialized
IR JVC protocol handler initialized
IR Sony protocol handler initialized
IR SANYO protocol handler initialized
IR Sharp protocol handler initialized
IR MCE Keyboard/mouse protocol handler initialized
IR XMP protocol handler initialized
coda 2040000.vpu: Direct firmware load for vpu_fw_imx6q.bin failed with error -2
coda 2040000.vpu: Direct firmware load for v4l-coda960-imx6q.bin failed with error -2
coda 2040000.vpu: firmware request failed
imx2-wdt 20c0000.wdog: timeout 60 sec (nowayout=0)
softdog: initialized. soft_noboot=0 soft_margin=60 sec soft_panic=0 (nowayout=0)
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
sdhci-esdhc-imx 2194000.usdhc: could not get ultra high speed state, work on normal mode
sdhci-esdhc-imx 2194000.usdhc: Got CD GPIO
mmc0: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
怎么能正常启动内核，另外rootfs是否需要根据内核而改变，现在用的是板子自带的rootfs