请教各位 tiny210 核心板无法单独启动 供电5v 引出串口， 串口启动停留信息:单核心板启动：
Board type: 2
Load Kernel...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 2.6.35.7-FriendlyARM (root@jensen) (gcc version 4.5.1 (ctng-1.8.1-FA) ) #1 PREEMPT Thu Mar 1 17:38:57 HKT 2012
[ 0.000000] CPU: ARMv7 Processor [412fc082] revision 2 (ARMv7), cr=10c53c7f
[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[ 0.000000] Machine: MINI210
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] Normal zone: 1 pages exceeds realsize 0
[ 0.000000] Normal zone: 1 pages exceeds realsize 0
[ 0.000000] MINI210: S70 selected
[ 0.000000] CPU S5PV210/S5PC110 (id 0x43110220)
[ 0.000000] S3C24XX Clocks, Copyright 2004 Simtec Electronics
[ 0.000000] S5PV210: PLL settings, A=1000000000, M=667000000, E=80000000 V=54000000
[ 0.000000] S5PV210: ARMCLK=1000000000, HCLKM=200000000, HCLKD=166750000
[ 0.000000] HCLKP=133400000, PCLKM=100000000, PCLKD=83375000, PCLKP=66700000
[ 0.000000] sclk_dmc: source is sclk_a2m (0), rate is 200000000
[ 0.000000] sclk_onenand: source is hclk_dsys (1), rate is 166750000
[ 0.000000] sclk: source is mout_mpll (6), rate is 66700000
[ 0.000000] sclk: source is mout_mpll (6), rate is 66700000
[ 0.000000] sclk: source is mout_mpll (6), rate is 66700000
[ 0.000000] sclk: source is mout_mpll (6), rate is 66700000
[ 0.000000] sclk_mixer: source is sclk_dac (0), rate is 54000000
[ 0.000000] sclk_spdif: source is sclk_audio (0), rate is 24000000
[ 0.000000] sclk_fimc: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_fimc: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_fimc: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_cam0: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_cam1: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_fimd: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_mmc: source is mout_epll (7), rate is 80000000
[ 0.000000] sclk_mmc: source is mout_epll (7), rate is 80000000
[ 0.000000] sclk_mmc: source is mout_epll (7), rate is 80000000
[ 0.000000] sclk_mmc: source is mout_epll (7), rate is 80000000
[ 0.000000] sclk_mfc: source is sclk_a2m (0), rate is 200000000
[ 0.000000] sclk_g2d: source is sclk_a2m (0), rate is 200000000
[ 0.000000] sclk: source is sclk_a2m (0), rate is 200000000
[ 0.000000] sclk_csis: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_spi: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_spi: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_pwi: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_pwm: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_mdnie: source is ext_xtal (0), rate is 24000000
[ 0.000000] sclk_mdnie_pwm: source is ext_xtal (0), rate is 24000000
[ 0.000000] s5pv210: 37748736 bytes system memory reserved for mfc at 0x20b6d000
[ 0.000000] s5pv210: 37748736 bytes system memory reserved for mfc at 0x30204000
[ 0.000000] s5pv210: 25165824 bytes system memory reserved for fimc0 at 0x32604000
[ 0.000000] s5pv210: 10137600 bytes system memory reserved for fimc1 at 0x33e04000
[ 0.000000] s5pv210: 25165824 bytes system memory reserved for fimc2 at 0x347af000
[ 0.000000] s5pv210: 8388608 bytes system memory reserved for jpeg at 0x22f6d000
[ 0.000000] s5pv210: 3072000 bytes system memory reserved for fimd at 0x35faf000
[ 0.000000] s5pv210: 4194304 bytes system memory reserved for texstream at 0x3629d000
[ 0.000000] s5pv210: 5683200 bytes system memory reserved for pmem at 0x2376d000
[ 0.000000] s5pv210: 3379200 bytes system memory reserved for pmem_gpu1 at 0x23cd9000
[ 0.000000] s5pv210: 1536000 bytes system memory reserved for pmem_adsp at 0x24012000
[ 0.000000] s5pv210: 8388608 bytes system memory reserved for g2d at 0x24189000
[ 0.000000] Built 2 zonelists in Zone order, mobility grouping on. Total pages: 130048
[ 0.000000] Kernel command line: root=/dev/mtdblock4 console=ttySAC0,115200 init=/linuxrc lcd=S70
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 256MB 256MB = 512MB total
[ 0.000000] Memory: 343544k/343544k available, 180744k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] DMA : 0xff000000 - 0xffe00000 ( 14 MB)
[ 0.000000] vmalloc : 0xe0800000 - 0xfc000000 ( 440 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .init : 0xc0008000 - 0xc016e000 (1432 kB)
[ 0.000000] .text : 0xc016e000 - 0xc07c0000 (6472 kB)
[ 0.000000] .data : 0xc07c0000 - 0xc0907b40 (1311 kB)
[ 0.000000] SLUB: Genslabs=9, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=4
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU-based detection of stalled CPUs is disabled.
[ 0.000000] Verbose stalled-CPUs detection is disabled.
[ 0.000000] NR_IRQS:393
[ 0.000000] VIC @fd000000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd010000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd020000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd030000: id 0x00041192, vendor 0x41
[ 0.000000] mult[140737]
[ 0.000000] max_delta_ns[2937815369]
[ 0.000000] min_delta_ns[30517]
[ 0.000000] rate[32768]
[ 0.000000] HZ[256]
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [ttySAC0] enabled
[ 0.486603] Calibrating delay loop...
就听到这儿了 不动了， 对比 核心板+sdk底板发现
………………
[ 0.000000] NR_IRQS:393
[ 0.000000] VIC @fd000000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd010000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd020000: id 0x00041192, vendor 0x41
[ 0.000000] VIC @fd030000: id 0x00041192, vendor 0x41
[ 0.000000] mult[140737]
[ 0.000000] max_delta_ns[2937815369]
[ 0.000000] min_delta_ns[30517]
[ 0.000000] rate[32768]
[ 0.000000] HZ[256]
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [ttySAC0] enabled
[ 0.486607] Calibrating delay loop... 998.15 BogoMIPS (lpj=1949696)
[ 0.570281] pid_max: default: 32768 minimum: 301
[ 0.570371] Mount-cache hash table entries: 512
[ 0.570678] Initializing cgroup subsys debug
[ 0.570722] Initializing cgroup subsys cpuacct
[ 0.570763] Initializing cgroup subsys freezer
[ 0.572880] CPU: Testing write buffer coherency: ok
[ 0.579750] regul mV normal
……………………正常启动
底板上哪些东东会影响内核启动呢 ？ 请教
