TQ335X开发板内核3.17.2移植和busybox移植

本文主要是介绍TQ335X开发板内核3.17.2移植和busybox移植，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

硬件平台：TQ335X_BOARD_V2.1

软件环境：VMWARE10+UBUNTU14.04

KERNEL：3.17.2

Busybox：1.20

参考

http://blog.csdn.net/girlkoo/article/details/41223733

http://blog.csdn.net/girlkoo/article/details/8719828

一、内核移植

老式的u-boot使用ATAGS的方式启动linux内核，本文使用新式的dtb方式启动内核。

我使用的内核是linux-3.17.2版本，下面开始编译内核。

（1）解压内核

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 tar jxf linux-3.17.2.tar.bz2  

（2）配置linux内核，由于am335x在内核中都归为omap2系列，故可以使用如下命令：

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 make ARCH=arm omap2plus_defconfig  

（3）编译内核：

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 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

我的linux工具链前缀是arm-linux-gnueabihf-，这个需要根据自己的实际的工具链情况进行替换。

（4）编译dtb：

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 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x-evm.dtb  

（5）制作启动盘：

将SD格式化为FAT系统，将MLO、u-boot.img拷贝到根目录下。

在根目录下创建boot目录，将编译好的zImage和am335x-evm.dtb拷贝到该目录下。

二、busybox制作ramdisk文件系统

（1）创建根文件系统目录结构，可以使用如下脚本：

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 #!/bin/sh  
 echo "------Create rootfs directons start...--------"  
 mkdir rootfs  
 cd rootfs  
 echo "--------Create root,dev....----------"  
 mkdir root dev etc boot tmp var sys proc lib mnt home usr   
 mkdir etc/init.d etc/rc.d etc/sysconfig  
 mkdir usr/sbin usr/bin usr/lib usr/modules  
 echo "make node in dev/console dev/null"  
 sudo mknod -m 600 dev/console c 5 1  
 sudo mknod -m 600 dev/null  c 1 3  
 mkdir mnt/etc mnt/jffs2 mnt/yaffs mnt/data mnt/temp  
 mkdir var/lib var/lock var/run var/tmp  
 chmod 1777 tmp  
 chmod 1777 var/tmp  
 echo "-------make direction done---------"  

在这里我将脚本命名为mkrootfs.sh，接下来给脚本加可执行权限（即chmod a+x mkrootfs）并运行脚本。我的脚本是在~/work目录下运行的，所以我的根文件系统的根目录为~/work/rootfs，后面均以该目录为例阐述。

（2）编译Busybox

到Busybox下载最新版的Busybox源码，我是用的是1.20.0版本，下载完后解压并进入busybox目录，首先是配置busybox

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 make menuconfig  

配置菜单跟配置内核时的差不多，依次进入Busybox Settings => Build Options => Cross Compiler prefix (NEW)，设置为编译器的前缀，我的是arm-linux-。网上有些朋友还推荐选择Busybox Settings => Build Options => Build BusyBox as a static binary (no shared libs)，但是如果我们正确拷贝编译器了运行库的话，不设置也可以。现在可以编译Busybox了，执行

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 make  

编译过程很顺利，我这里没有遇到任何错误，接下来将编译好的Busybox安装到~/work/rootfs就可以了，执行

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 make CONFIG_PREFIX=~/work/rootfs install  

(3)构建etc目录

在etc目录下创建Inittab文件，内容如下

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 ::sysinit:/etc/init.d/rcS  
 console::askfirst:-/bin/sh  
 ::restart:/sbin/init  
 ::ctrlaltdel:/sbin/reboot  
 ::shutdown:/bin/umount -a -r  
 ::shutdown:/sbin/swapoff -a  

在etc/init.d/目录下创建rcS文件，内容如下

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 echo "----------mount all.........."  
 mount -a  
 echo "----------Starting mdev......"  
 echo /sbin/mdev > /proc/sys/kernel/hotplug  
 mdev -s  
 /bin/hostname -F /etc/sysconfig/HOSTNAME  

为inittab和rcS文件添加可执行权限

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 chmod a+x inittab  
 chmod a+x rcS  

在etc目录下创建fstab文件，内容如下

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 #evice mount-point type       option       dump   fsck   order  
 proc /proc proc defaults 0 0  
 none /tmp ramfs defaults 0 0  
 mdev /dev ramfs defaults 0 0  
 sysfs /sys sysfs defaults 0 0  

在etc目录下创建profile文件，内容如下

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 PATH=/bin:/sbin:/usr/bin:/usr/sbin    
 export PATH    
 #set hostname    
 HOSTNAME='/bin/hostname'    
 export HOSTNAME    
 # Set PS1    
 PS1='[\u@\h \W]\$'  
 export PS1  

拷贝主机/etc目录下的passwd和group文件到etc目录下。

(4) 设置HOSTNAME文件

在etc/sysconfig目录下创建HOSTNAME文件，在文件中写入主机名，我这里写的是tq335x。

(5)制作ramdisk

制作ramdisk的方式很多，最方便的是使用指令genext2fs。ubuntu操作系统上可以通过apt-get工具直接安装genext2fs工具：

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 sudo apt-get install genext2fs  

其它操作系统也有类似的管理工具，这里就不一一列举了，下面使用genext2fs打包rootfs目录。命令如下：

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 genext2fs -b 4096 -d rootfs/ ramdisk  

4096可以改成2^N，建议不要太大

然后使用gzip命令压缩ramdisk：

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 gzip -9 -f ramdisk  

执行完成该命令后可以得到文件ramdisk.gz。

由于u-boot启动内核使用的ramdisk需要有u-boot的image头，故需要使用编译u-boot时生成的工具mkimage将ramdisk.gz制作为ramdisk.img。其中，工具mkimage位于u-boot的tools目录下，制作ramdisk.img的指令如下：

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 u-boot-2015.07/tools/mkimage -A arm -O linux -T ramdisk -C none -a 0x88080000 -n "ramdisk" -d ramdisk.gz ramdisk.img  

命令中mkimage前的路径根据自己实际执行的路径指定即可。

这样，就完成了u-boot可以使用的ramdisk制作，然后将ramdisk.img拷贝到SD卡的boot目录下即可。

（6）挂载ramdisk

老式的ATAGS方式启动内核时使用ATAG传递bootargs给内核，由于本文使用的dtb方式启动内核，故采取dtb的chosen方式传递bootargs给内核。

Step1: 修改内核配置

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 make ARCH=arm menuconfig  

进入配置项：

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 Boot options  --->  

按N键取消配置项：

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 [ ] Use appended device tree blob to zImage (EXPERIMENTAL)  

官方内核默认启用了该项配置。启用该项配置后内核兼容老式的ATAGS方式内核启动，关闭后则使用新式的dtb方式启动，故此处禁用了此项配置。

按ESC保存配置后退出menuconfig画面，重新编译内核：

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 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j8  

Step2:添加bootargs到dtb

切换到内核目录arch/arm/boot/dts/，拷贝am335x-evm.dts为tq335x.dts：

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 cp am335x-evm.dts tq335x.dts  

打开tq335x.dts，在memory项后通过chosen方式添加bootargs，添加内容如下：（注意TQ335X的SRAM是512MB）

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 memory {  
     device_type = "memory";  
     reg = <0x80000000 0x20000000>; /* 512 MB */  
 };  
   
 chosen {  
     bootargs = "console=ttyO0,115200n8 root=/dev/ram0";  
 };  
   
 ...  

其中chosen节点是新添加的，memory节点是原有的。

接下来重新编译dtb：

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 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- tq335x.dtb  

将新编译得到的tq335x.dtb拷贝到SD的boot目录下。至此，准备工作就完成了，下面我们使用新制作的ramdisk.img和tq335x.dtb启动内核。

Step3:使用新制作的ramdisk.img和tq335x.dtb启动内核

将SD插到开发板上，给开发板上电（开发板切换到SD卡启动模式），可以通过按任意键打断内核启动进入u-boot命令模式（由于之前没有配置u-boot的bootcmd环境变量，而默认的u-boot环境无法启动内核，故，开发板上电后不按键的话也会进入u-boot的命令行模式）。

首先是加载内核到DRAM：

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 load mmc 0 ${loadaddr} /boot/zImage  

其中，${loadaddr}在u-boot的环境变量中默认指定为0x82000000，这里可以直接打数字。

然后是加载dtb到DRAM：

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 load mmc 0 ${fdtaddr} /boot/tq335x.dtb  

${fdtaddr}的默认值是0x88000000。

接下来加载ramdisk到DRAM：

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 load mmc 0 ${rdaddr} /boot/ramdisk.img  

${rdaddr}的默认值是0x88080000
最后就是将ramdisk和dtb的加载地址作为参数启动内核：

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 bootz ${loadaddr} ${rdaddr} ${fdtaddr}  

至此，Linux内核已经能够正常启动并进入终端模式了。

启动Log如下：

三、启动

（1）u-boot命令行启动Linux内核

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 setenv bootargs 'console=ttyO0,115200n8 root=/dev/ram0'  
 load mmc 0 0x82000000 /boot/zImage
 load mmc 0 0x88000000 /boot/tq335x.dtb
 
 load mmc 0 0x88080000 /boot/ramdisk.img  
 bootz 0x82000000 0x88080000 0x88000000  

至此，Linux内核就能启动了，看到的Log信息如下：

U-Boot 2015.07 (May 31 2016 - 20:18:36 +0800)Watchdog enabled
I2C:   ready
DRAM:  512 MiB
NAND:  1024 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Net:   cpsw, usb_ether
Hit any key to stop autoboot:  0
WARNING: Could not determine device tree to use
Card did not respond to voltage select!
SD/MMC found on device 1
Card did not respond to voltage select!
** Bad device mmc 1 **
Card did not respond to voltage select!
** Bad device mmc 1 **
Card did not respond to voltage select!
** Bad device mmc 1 **
Card did not respond to voltage select!
SD/MMC found on device 1
Card did not respond to voltage select!
** Bad device mmc 1 **
Card did not respond to voltage select!
** Bad device mmc 1 **
Card did not respond to voltage select!
** Bad device mmc 1 **
Booting from nand ...NAND read: incorrect device type in u-boot-spl-osNAND read: incorrect device type in kernel
Bad Linux ARM zImage magic!
U-Boot# setenv bootargs 'console=ttyO0,115200n8 root=/dev/ram0';
U-Boot# load mmc 0 0x82000000 /boot/zImage;
4370192 bytes read in 242 ms (17.2 MiB/s)
U-Boot# load mmc 0 0x88000000 /boot/tq335x.dtb;
34781 bytes read in 9 ms (3.7 MiB/s)
U-Boot# load mmc 0 0x88080000 /boot/ramdisk.img;
967070 bytes read in 59 ms (15.6 MiB/s)
U-Boot# bootz 0x82000000 0x88080000 0x88000000
Kernel image @ 0x82000000 [ 0x000000 - 0x42af10 ]
## Loading init Ramdisk from Legacy Image at 88080000 ...Image Name:   ramdiskCreated:      2016-05-31   8:15:53 UTCImage Type:   ARM Linux RAMDisk Image (uncompressed)Data Size:    967006 Bytes = 944.3 KiBLoad Address: 88080000Entry Point:  88080000Verifying Checksum ... OK
## Flattened Device Tree blob at 88000000Booting using the fdt blob at 0x88000000Loading Ramdisk to 8ff13000, end 8ffff15e ... OKLoading Device Tree to 8ff07000, end 8ff127dc ... OKStarting kernel ...[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.17.2 (stephen@ubuntu) (gcc version 4.9.3 20150413                                                                              (prerelease) (Linaro GCC 4.9-2015.05) ) #3 SMP Tue May 31 14:47:26 CST 2016
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instructio                                                                             n cache
[    0.000000] Machine model: TI AM335x EVM
[    0.000000] cma: Reserved 16 MiB at 9e800000
[    0.000000] Memory policy: Data cache writeback
[    0.000000]   HighMem zone: 1048574 pages exceeds freesize 0
[    0.000000] CPU: All CPU(s) started in SVC mode.
[    0.000000] AM335X ES2.1 (sgx neon )
[    0.000000] PERCPU: Embedded 9 pages/cpu @dfa9a000 s14336 r8192 d14336 u36864
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pag                                                                             es: 129792
[    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/ram0
[    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: 483808K/523264K available (5697K kernel code, 646K rwdata                                                                             , 2208K rodata, 406K init, 8210K bss, 39456K reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
[    0.000000]     vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc07c096c   (7907 kB)
[    0.000000]       .init : 0xc07c1000 - 0xc0826800   ( 406 kB)
[    0.000000]       .data : 0xc0828000 - 0xc08c9b08   ( 647 kB)
[    0.000000]        .bss : 0xc08c9b08 - 0xc10ce690   (8211 kB)
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrup                                                                             ts
[    0.000000] Total of 128 interrupts on 1 active controller
[    0.000000] OMAP clockevent source: timer2 at 24000000 Hz
[    0.000014] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 17895                                                                             6969942ns
[    0.000059] OMAP clocksource: timer1 at 24000000 Hz
[    0.000758] Console: colour dummy device 80x30
[    0.000807] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo                                                                              Molnar
[    0.000816] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.000823] ... MAX_LOCK_DEPTH:          48
[    0.000830] ... MAX_LOCKDEP_KEYS:        8191
[    0.000837] ... CLASSHASH_SIZE:          4096
[    0.000844] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.000851] ... MAX_LOCKDEP_CHAINS:      65536
[    0.000859] ... CHAINHASH_SIZE:          32768
[    0.000866]  memory used by lock dependency info: 5167 kB
[    0.000873]  per task-struct memory footprint: 1152 bytes
[    0.000915] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[    0.079099] pid_max: default: 32768 minimum: 301
[    0.079476] Security Framework initialized
[    0.079598] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.079612] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.081757] CPU: Testing write buffer coherency: ok
[    0.082896] CPU0: thread -1, cpu 0, socket -1, mpidr 0
[    0.083017] Setting up static identity map for 0x8056ef90 - 0x8056f000
[    0.086163] Brought up 1 CPUs
[    0.086183] SMP: Total of 1 processors activated.
[    0.086194] CPU: All CPU(s) started in SVC mode.
[    0.088748] devtmpfs: initialized
[    0.097390] VFP support v0.3: implementor 41 architecture 3 part 30 variant c                                                                              rev 3
[    0.133743] omap_hwmod: tptc0 using broken dt data from edma
[    0.134103] omap_hwmod: tptc1 using broken dt data from edma
[    0.134444] omap_hwmod: tptc2 using broken dt data from edma
[    0.142408] omap_hwmod: debugss: _wait_target_disable failed
[    0.200207] pinctrl core: initialized pinctrl subsystem
[    0.202672] regulator-dummy: no parameters
[    0.232113] NET: Registered protocol family 16
[    0.240467] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.242559] cpuidle: using governor ladder
[    0.242583] cpuidle: using governor menu
[    0.254378] OMAP GPIO hardware version 0.1
[    0.269479] omap-gpmc 50000000.gpmc: could not find pctldev for node /pinmux@                                                                             44e10800/nandflash_pins_s0, deferring probe
[    0.269521] platform 50000000.gpmc: Driver omap-gpmc requests probe deferral
[    0.274008] No ATAGs?
[    0.274038] hw-breakpoint: debug architecture 0x4 unsupported.
[    0.316701] edma-dma-engine edma-dma-engine.0: TI EDMA DMA engine driver
[    0.318009] vbat: 5000 mV
[    0.318759] lis3_reg: no parameters
[    0.322094] SCSI subsystem initialized
[    0.322897] usbcore: registered new interface driver usbfs
[    0.323077] usbcore: registered new interface driver hub
[    0.326563] usbcore: registered new device driver usb
[    0.327392] omap_i2c 44e0b000.i2c: could not find pctldev for node /pinmux@44                                                                             e10800/pinmux_i2c0_pins, deferring probe
[    0.327429] platform 44e0b000.i2c: Driver omap_i2c requests probe deferral
[    0.327484] omap_i2c 4802a000.i2c: could not find pctldev for node /pinmux@44                                                                             e10800/pinmux_i2c1_pins, deferring probe
[    0.327508] platform 4802a000.i2c: Driver omap_i2c requests probe deferral
[    0.331789] Switched to clocksource timer1
[    0.477768] NET: Registered protocol family 2
[    0.479589] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[    0.479762] TCP bind hash table entries: 4096 (order: 5, 147456 bytes)
[    0.480966] TCP: Hash tables configured (established 4096 bind 4096)
[    0.481149] TCP: reno registered
[    0.481172] UDP hash table entries: 256 (order: 2, 20480 bytes)
[    0.481343] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes)
[    0.482573] NET: Registered protocol family 1
[    0.484432] RPC: Registered named UNIX socket transport module.
[    0.484456] RPC: Registered udp transport module.
[    0.484466] RPC: Registered tcp transport module.
[    0.484475] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.485329] Trying to unpack rootfs image as initramfs...
[    0.486742] rootfs image is not initramfs (no cpio magic); looks like an init                                                                             rd
[    0.493217] Freeing initrd memory: 944K (cff13000 - cffff000)
[    0.493672] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counter                                                                             s available
[    0.497833] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.503274] VFS: Disk quotas dquot_6.5.2
[    0.503419] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.505845] NFS: Registering the id_resolver key type
[    0.506197] Key type id_resolver registered
[    0.506212] Key type id_legacy registered
[    0.506366] jffs2: version 2.2. (NAND) (SUMMARY)  Â© 2001-2006 Red Hat, Inc.
[    0.506789] msgmni has been set to 978
[    0.511532] io scheduler noop registered
[    0.511734] io scheduler deadline registered
[    0.511811] io scheduler cfq registered (default)
[    0.514067] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[    0.517027] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.522737] omap_uart 44e09000.serial: no wakeirq for uart0
[    0.523268] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88, base_baud =                                                                              3000000) is a OMAP UART0
[    1.230156] console [ttyO0] enabled
[    1.238657] omap_rng 48310000.rng: OMAP Random Number Generator ver. 20
[    1.267794] brd: module loaded
[    1.284974] loop: module loaded
[    1.291133] mtdoops: mtd device (mtddev=name/number) must be supplied
[    1.301020] usbcore: registered new interface driver asix
[    1.306871] usbcore: registered new interface driver ax88179_178a
[    1.313398] usbcore: registered new interface driver cdc_ether
[    1.319662] usbcore: registered new interface driver smsc95xx
[    1.325819] usbcore: registered new interface driver net1080
[    1.331884] usbcore: registered new interface driver cdc_subset
[    1.338184] usbcore: registered new interface driver zaurus
[    1.344247] usbcore: registered new interface driver cdc_ncm
[    1.351260] usbcore: registered new interface driver cdc_wdm
[    1.357423] usbcore: registered new interface driver usb-storage
[    1.363889] usbcore: registered new interface driver usbtest
[    1.380977] mousedev: PS/2 mouse device common for all mice
[    1.391413] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc as rtc0
[    1.399585] i2c /dev entries driver
[    1.403376] Driver for 1-wire Dallas network protocol.
[    1.412155] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[    1.422003] omap_hsmmc 48060000.mmc: unable to get vmmc regulator -517
[    1.429435] platform 48060000.mmc: Driver omap_hsmmc requests probe deferral
[    1.437514] ledtrig-cpu: registered to indicate activity on CPUs
[    1.444382] usbcore: registered new interface driver usbhid
[    1.450203] usbhid: USB HID core driver
[    1.455475] oprofile: using arm/armv7
[    1.459907] TCP: cubic registered
[    1.463448] Initializing XFRM netlink socket
[    1.468016] NET: Registered protocol family 17
[    1.472773] NET: Registered protocol family 15
[    1.477726] Key type dns_resolver registered
[    1.482395] omap_voltage_late_init: Voltage driver support not added
[    1.489047] sr_dev_init: No voltage domain specified for smartreflex0. Cannot                                                                              initialize
[    1.497525] sr_dev_init: No voltage domain specified for smartreflex1. Cannot                                                                              initialize
[    1.506994] ThumbEE CPU extension supported.
[    1.511504] Registering SWP/SWPB emulation handler
[    1.516567] SmartReflex Class3 initialized
[    1.529168] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[    1.536278] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xd3
[    1.543025] nand: AMD/Spansion S34ML08G1
[    1.547122] nand: 1024MiB, SLC, page size: 2048, OOB size: 64
[    1.553143] nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled
[    1.559226] omap2-nand: probe of omap2-nand.0 failed with error -22
[    1.676440] tps65910 0-002d: No interrupt support, no core IRQ
[    1.692216] vrtc: 1800 mV
[    1.695595] vrtc: supplied by vbat
[    1.702928] vio: at 1500 mV
[    1.706168] vio: supplied by vbat
[    1.712981] vdd_mpu: 912 <--> 1312 mV at 1325 mV
[    1.718114] vdd_mpu: supplied by vbat
[    1.725155] vdd_core: 912 <--> 1150 mV at 1137 mV
[    1.730372] vdd_core: supplied by vbat
[    1.737082] vdd3: 5000 mV
[    1.742588] vdig1: at 1800 mV
[    1.745999] vdig1: supplied by vbat
[    1.752538] vdig2: at 1800 mV
[    1.755947] vdig2: supplied by vbat
[    1.762371] vpll: at 1800 mV
[    1.765684] vpll: supplied by vbat
[    1.771963] vdac: at 1800 mV
[    1.775270] vdac: supplied by vbat
[    1.781430] vaux1: at 1800 mV
[    1.784923] vaux1: supplied by vbat
[    1.791216] vaux2: at 3300 mV
[    1.794707] vaux2: supplied by vbat
[    1.801070] vaux33: at 3300 mV
[    1.804652] vaux33: supplied by vbat
[    1.811012] vmmc: 1800 <--> 3300 mV at 3300 mV
[    1.816037] vmmc: supplied by vbat
[    1.822109] vbb: at 3000 mV
[    1.825557] vbb: supplied by vbat
[    1.830756] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[    1.844057] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 100 kHz
[    1.940015] mmc0: host does not support reading read-only switch. assuming wr                                                                             ite-enable.
[    1.950860] mmc0: new high speed SDHC card at address 0007
[    1.958678] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[    1.965135] davinci_mdio 4a101000.mdio: detected phy mask ffffffde
[    1.972834] mmcblk0: mmc0:0007 SD4GB 3.68 GiB
[    1.983712]  mmcblk0:
[    1.989130] libphy: 4a101000.mdio: probed
[    1.993465] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driv                                                                             er unknown
[    2.001862] davinci_mdio 4a101000.mdio: phy[5]: device 4a101000.mdio:05, driv                                                                             er unknown
[    2.011389] cpsw 4a100000.ethernet: Detected MACID = c4:ed:ba:8e:5a:27
[    2.022361] input: volume_keys@0 as /devices/volume_keys@0/input/input0
[    2.032621] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:00:0                                                                             0 UTC (946684800)
[    2.041730] sr_init: No PMIC hook to init smartreflex
[    2.047299] sr_init: platform driver register failed for SR
[    2.070807] lis3_reg: disabling
[    2.077047] RAMDISK: gzip image found at block 0
[    2.204812] VFS: Mounted root (ext2 filesystem) readonly on device 1:0.
[    2.212638] devtmpfs: mounted
[    2.216373] Freeing unused kernel memory: 404K (c07c1000 - c0826000)
----------mount all..........
----------Starting mdev......Please press Enter to activate this console.
[root@tq335x /]#

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