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        EEPW首頁 
	 > 嵌入式系統(tǒng) > 設計應用 > AM335x(TQ335x)學習筆記——掛載Ramdisk
        
    
        

        

        


	
	
	

        
	
        
		
        
			
        AM335x(TQ335x)學習筆記——掛載Ramdisk
        
						
        
				作者：
				時間：2016-11-28
				來源：網(wǎng)絡
				
				
				
				
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        接下來加載ramdisk到DRAM：
        1. loadmmc0${rdaddr}/boot/ramdisk.img
        ${rdaddr}的默認值是0x88080000
        最后就是將ramdisk和dtb的加載地址作為參數(shù)啟動內核：
        1. bootz${loadaddr}${rdaddr}${fdtaddr}
        至此，Linux內核已經(jīng)能夠正常啟動并進入終端模式了。
        啟動Log如下：
        1. Hitanykeytostopautoboot:0
        2. U-Boot#loadmmc0${fdtaddr}/boot/tq335x.dtb
        3. 34781bytesreadin9ms(3.7MiB/s)
        4. U-Boot#loadmmc0${loadaddr}/boot/zImage
        5. 4377824bytesreadin242ms(17.3MiB/s)
        6. U-Boot#loadmmc0${rdaddr}/boot/ramdisk.img
        7. 1120934bytesreadin68ms(15.7MiB/s)
        8. U-Boot#bootz${loadaddr}${rdaddr}${fdtaddr}
        9. Kernelimage@0x82000000[0x000000-0x42cce0]
        10. ##LoadinginitRamdiskfromLegacyImageat88080000...
        11. ImageName:ramdisk
        12. Created:2014-11-1815:47:41UTC
        13. ImageType:ARMLinuxRAMDiskImage(uncompressed)
        14. DataSize:1120870Bytes=1.1MiB
        15. LoadAddress:88080000
        16. EntryPoint:88080000
        17. VerifyingChecksum...OK
        18. ##FlattenedDeviceTreeblobat88000000
        19. Bootingusingthefdtblobat0x88000000
        20. LoadingRamdiskto8feee000,end8ffffa66...OK
        21. LoadingDeviceTreeto8fee2000,end8feed7dc...OK
        24. Startingkernel...
        27. [0.000000]BootingLinuxonphysicalCPU0x0
        28. [0.000000]Linuxversion3.17.2(lilianrong@AY140721164813287e77Z)(gccversion4.7.3(Ubuntu/Linaro4.7.3-12ubuntu1))#1SMPTueNov1822:49:31CST2014
        29. [0.000000]CPU:ARMv7Processor[413fc082]revision2(ARMv7),cr=10c5387d
        30. [0.000000]CPU:PIPT/VIPTnonaliasingdatacache,VIPTaliasinginstructioncache
        31. [0.000000]Machinemodel:TIAM335xEVM
        32. [0.000000]cma:Reserved16MiBat9e800000
        33. [0.000000]Memorypolicy:Datacachewriteback
        34. [0.000000]HighMemzone:1048574pagesexceedsfreesize0
        35. [0.000000]CPU:AllCPU(s)startedinSVCmode.
        36. [0.000000]AM335XES2.1(sgxneon)
        37. [0.000000]PERCPU:Embedded9pages/cpu@dfa9a000s14336r8192d14336u36864
        38. [0.000000]Built1zonelistsinZoneorder,mobilitygroupingon.Totalpages:129792
        39. [0.000000]Kernelcommandline:console=ttyO0,115200n8root=/dev/ram0
        40. [0.000000]PIDhashtableentries:2048(order:1,8192bytes)
        41. [0.000000]Dentrycachehashtableentries:65536(order:6,262144bytes)
        42. [0.000000]Inode-cachehashtableentries:32768(order:5,131072bytes)
        43. [0.000000]Memory:483692K/523264Kavailable(5668Kkernelcode,647Krwdata,2208Krodata,406Kinit,8210Kbss,39572Kreserved,0Khighmem)
        44. [0.000000]Virtualkernelmemorylayout:
        45. [0.000000]vector:0xffff0000-0xffff1000(4kB)
        46. [0.000000]fixmap:0xffc00000-0xffe00000(2048kB)
        47. [0.000000]vmalloc:0xe0800000-0xff000000(488MB)
        48. [0.000000]lowmem:0xc0000000-0xe0000000(512MB)
        49. [0.000000]pkmap:0xbfe00000-0xc0000000(2MB)
        50. [0.000000]modules:0xbf000000-0xbfe00000(14MB)
        51. [0.000000].text:0xc0008000-0xc07b9478(7878kB)
        52. [0.000000].init:0xc07ba000-0xc081f800(406kB)
        53. [0.000000].data:0xc0820000-0xc08c1d08(648kB)
        54. [0.000000].bss:0xc08c1d08-0xc10c68e0(8211kB)
        55. [0.000000]HierarchicalRCUimplementation.
        56. [0.000000]RCUrestrictingCPUsfromNR_CPUS=2tonr_cpu_ids=1.
        57. [0.000000]RCU:Adjustinggeometryforrcu_fanout_leaf=16,nr_cpu_ids=1
        58. [0.000000]NR_IRQS:16nr_irqs:1616
        59. [0.000000]IRQ:FoundanINTCat0xfa200000(revision5.0)with128interrupts
        60. [0.000000]Totalof128interruptson1activecontroller
        61. [0.000000]OMAPclockeventsource:timer2at24000000Hz
        62. [0.000013]sched_clock:32bitsat24MHz,resolution41ns,wrapsevery178956969942ns
        63. [0.000061]OMAPclocksource:timer1at24000000Hz
        64. [0.000795]Console:colourdummydevice80x30
        65. [0.000847]Lockdependencyvalidator:Copyright(c)2006RedHat,Inc.,IngoMolnar
        66. [0.000856]...MAX_LOCKDEP_SUBCLASSES:8
        67. [0.000863]...MAX_LOCK_DEPTH:48
        68. [0.000870]...MAX_LOCKDEP_KEYS:8191
        69. [0.000878]...CLASSHASH_SIZE:4096
        70. [0.000885]...MAX_LOCKDEP_ENTRIES:32768
        71. [0.000892]...MAX_LOCKDEP_CHAINS:65536
        72. [0.000900]...CHAINHASH_SIZE:32768
        73. [0.000907]memoryusedbylockdependencyinfo:5167kB
        74. [0.000915]pertask-structmemoryfootprint:1152bytes
        75. [0.000956]Calibratingdelayloop...996.14BogoMIPS(lpj=4980736)
        76. [0.079037]pid_max:default:32768minimum:301
        77. [0.079438]SecurityFrameworkinitialized
        78. [0.079564]Mount-cachehashtableentries:1024(order:0,4096bytes)
        79. [0.079576]Mountpoint-cachehashtableentries:1024(order:0,4096bytes)
        80. [0.081769]CPU:Testingwritebuffercoherency:ok
        81. [0.082962]CPU0:thread-1,cpu0,socket-1,mpidr0
        82. [0.083084]Settingupstaticidentitymapfor0x8055f030-0x8055f0a0
        83. [0.086327]Broughtup1CPUs
        84. [0.086347]SMP:Totalof1processorsactivated.
        85. [0.086357]CPU:AllCPU(s)startedinSVCmode.
        86. [0.088983]devtmpfs:initialized
        87. [0.097743]VFPsupportv0.3:implementor41architecture3part30variantcrev3
        88. [0.132789]omap_hwmod:tptc0usingbrokendtdatafromedma
        89. [0.133139]omap_hwmod:tptc1usingbrokendtdatafromedma
        90. [0.133467]omap_hwmod:tptc2usingbrokendtdatafromedma
        91. [0.141252]omap_hwmod:debugss:_wait_target_disablefailed
        92. [0.198964]pinctrlcore:initializedpinctrlsubsystem
        93. [0.201633]regulator-dummy:noparameters
        94. [0.231057]NET:Registeredprotocolfamily16
        95. [0.239540]DMA:preallocated256KiBpoolforatomiccoherentallocations
        96. [0.241725]cpuidle:usinggovernorladder
        97. [0.241754]cpuidle:usinggovernormenu
        98. [0.253658]OMAPGPIOhardwareversion0.1
        99. [0.268591]omap-gpmc50000000.gpmc:couldnotfindpctldevfornode/pinmux@44e10800/nandflash_pins_s0,deferringprobe
        100. [0.268635]platform50000000.gpmc:Driveromap-gpmcrequestsprobedeferral
        101. [0.273243]NoATAGs?
        102. [0.273274]hw-breakpoint:debugarchitecture0x4unsupported.
        103. [0.316650]edma-dma-engineedma-dma-engine.0:TIEDMADMAenginedriver
        104. [0.318001]vbat:5000mV
        105. [0.318774]lis3_reg:noparameters
        106. [0.322209]SCSIsubsysteminitialized
        107. [0.323028]usbcore:registerednewinterfacedriverusbfs
        108. [0.323207]usbcore:registerednewinterfacedriverhub
        109. [0.327009]usbcore:registerednewdevicedriverusb
        110. [0.327877]omap_i2c44e0b000.i2c:couldnotfindpctldevfornode/pinmux@44e10800/pinmux_i2c0_pins,deferringprobe
        111. [0.327917]platform44e0b000.i2c:Driveromap_i2crequestsprobedeferral
        112. [0.327972]omap_i2c4802a000.i2c:couldnotfindpctldevfornode/pinmux@44e10800/pinmux_i2c1_pins,deferringprobe
        113. [0.327995]platform4802a000.i2c:Driveromap_i2crequestsprobedeferral
        114. [0.332363]Switchedtoclocksourcetimer1
        115. [0.477595]NET:Registeredprotocolfamily2
        116. [0.479415]TCPestablishedhashtableentries:4096(order:2,16384bytes)
        117. [0.479601]TCPbindhashtableentries:4096(order:5,147456bytes)
        118. [0.480965]TCP:Hashtablesconfigured(established4096bind4096)
        119. [0.481157]TCP:renoregistered
        120. [0.481186]UDPhashtableentries:256(order:2,20480bytes)
        121. [0.481375]UDP-Litehashtableentries:256(order:2,20480bytes)
        122. [0.482657]NET:Registeredprotocolfamily1
        123. [0.484656]RPC:RegisterednamedUNIXsockettransportmodule.
        124. [0.484680]RPC:Registeredudptransportmodule.
        125. [0.484690]RPC:Registeredtcptransportmodule.
        126. [0.484699]RPC:RegisteredtcpNFSv4.1backchanneltransportmodule.
        127. [0.485566]Tryingtounpackrootfsimageasinitramfs...
        128. [0.487045]rootfsimageisnotinitramfs(nocpiomagic);lookslikeaninitrd
        129. [0.497016]Freeinginitrdmemory:1092K(cfeee000-cffff000)
        130. [0.497514]hwperfevents:enabledwitharmv7_cortex_a8PMUdriver,5countersavailable
        131. [0.501968]futexhashtableentries:256(order:2,16384bytes)
        132. [0.507634]VFS:Diskquotasdquot_6.5.2
        133. [0.507781]Dquot-cachehashtableentries:1024(order0,4096bytes)
        134. [0.510254]NFS:Registeringtheid_resolverkeytype
        135. [0.510637]Keytypeid_resolverregistered
        136. [0.510653]Keytypeid_legacyregistered
        137. [0.510794]jffs2:version2.2.(NAND)(SUMMARY)漏2001-2006RedHat,Inc.
        138. [0.511229]msgmnihasbeensetto978
        139. [0.516624]ioschedulernoopregistered
        140. [0.516656]ioschedulerdeadlineregistered
        141. [0.516726]ioschedulercfqregistered(default)
        142. [0.519057]pinctrl-single44e10800.pinmux:142pinsatpaf9e10800size568
        143. [0.522800]Serial:8250/16550driver,4ports,IRQsharingenabled
        144. [0.528945]omap_uart44e09000.serial:nowakeirqforuart0
        145. [0.529540]44e09000.serial:ttyO0atMMIO0x44e09000(irq=88,base_baud=3000000)isaOMAPUART0				   
				
            
                
			
							
          
                
			            
                            
              
            
        
		
        
		
        
		
        
		
        
		
        
			
          
				
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