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AM335x SD 卡 启动时遇到 Waiting for root device /dev/mmcblk0p2...

qun zhou
Expert 2161 points
Other Parts Discussed in Thread: UNIFLASH

各位好：

     我们的板子是基于am335xboneblack制作的，DDR3和emmc都更换了，DDR3配置和leving都弄过了，spl，uboot，都可以正常启动了，可是到下面所示位置停止了。

[    1.877929] mmc1: unrecognised EXT_CSD revision 7
[    1.882965] mmc1: error -22 whilst initialising MMC card
[    1.890106] create_regulator: DCDC2: Failed to create debugfs directory
[    1.898162] smartreflex smartreflex: am33xx_sr_probe: Driver initialized
[    1.913757] clock: disabling unused clocks to save power
[    1.947967] Detected MACID=d0:5f:b8:fc:3:a0
[    1.954620] cpsw: Detected MACID = d0:5f:b8:fc:03:a2
[    1.962036] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[    1.972045] Waiting for root device /dev/mmcblk0p2...
请问是因为更换emmc的原因吗？还是其他原因？

  • 0
    TI__Mastermind 25020 points

    建议你在UBOOT中使用pri命令，打印一下当前启动的环境变量设置。从emmc改成nand，这里应该是需要重新设置的。

  • 0 回复 Steven Liu1
    Expert 2161 points

      您好：

       我们板子上没有nand，还是用的emmc这样修改不好吧。

  • 0 回复 Steven Liu1
    Expert 2161 points

    您好：

       不好意思我表达的不清楚，我们emmc还是用的，只不过是芯片换了，请问需要做什么修改吗？

  • 0 回复 qun zhou
    TI__Mastermind 25020 points

    换成的新的eMMC，是否兼容eMMC 的4.41标准？小于4G的应接在MMC0上，大于或者等于4G的需接在MMC1上。

  • 0 回复 Steven Liu1
    Expert 2161 points

    刘工您好：

          我刚刚看了emmc的芯片手册是支持4.41的协议标准的，并且我们用的是4g的也是接在mmc1上的，我看了下手册，貌似那个bootsize变成以前的两倍，请问这个有关系吗？

  • 0 回复 Steven Liu1
    Expert 2161 points

    刘工您好：

        而且我用uniflash烧写emmc的时候也遇到了问题，烧到一半就退出了，log在下面。麻烦您帮忙看下哦。

    Collected errors:
    * opkg_conf_load: Could not create lock file /var/lib/opkg/lock: No such file o r directory.
    INIT: Entering runlevel: 5
    Starting syslogd/klogd: done
    ****************************************************
    ****************************************************

    Sitara Flash Fetcher Script - 07/28/2014

    udhcpc (v1.20.2) started
    Sending discover...
    Sending discover...
    Sending discover...
    No lease, failing
    Getting flasher script from server: 192.168.100.1
    tftp: sendto: Network is unreachable
    Unable to fetch debrick script! Exiting...
    Stopping Bootlog daemon: bootlogd.

  • 0 回复 qun zhou
    Mastermind 9486 points

    应该是有关系的

    bootsize是重要参数

  • 0 回复 qun zhou
    TI__Mastermind 25020 points

    bootsize变成以前的两倍，是指什么？编译出来的MLO？还是第一个分区的大小设置？如果是大小设置的话，你是可以调整的。

  • 0 回复 Steven Liu1
    Expert 2161 points

    您好：

       我说的bootsize是手册里规定的max bootsize，现在的是4M，还有我在网上查了一些帖子也做了修改现在貌似emmc能识别了但是还是不能完成，出现了新的log。我们t卡是8G的，这个应该是emmc识别了。

    [    2.003723] mmc1: new high speed MMC card at address 0001
    [    2.011108] mmcblk0: mmc1:0001 S10004 3.56 GiB
    [    2.016571] mmcblk0boot0: mmc1:0001 S10004 partition 1 4.00 MiB
    [    2.023437] mmcblk0boot1: mmc1:0001 S10004 partition 2 4.00 MiB
    [    2.032562]  mmcblk0: unknown partition table
    [    2.042297]  mmcblk0boot1: unknown partition table
    [    2.052551]  mmcblk0boot0: unknown partition table
    [    2.076629] Detected MACID=d0:5f:b8:fc:3:a0
    [    2.083251] cpsw: Detected MACID = d0:5f:b8:fc:03:a2
    [    2.090820] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:00                                                                                         UTC (946684800)
    [    2.101013] VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2)
    [    2.108551] Please append a correct "root=" boot option; here are the availab                                                                                        le partitions:
    [    2.117492] b300         3735552 mmcblk0  driver: mmcblk
    [    2.123168] b310            4096 mmcblk0boot1  (driver?)
    [    2.128845] b308            4096 mmcblk0boot0  (driver?)
    [    2.134490] Kernel panic - not syncing: VFS: Unable to mount root fs on unkno                                                                                        wn-block(179,2)
    [    2.143463] Backtrace:
    [    2.146148] [<c0017dbc>] (dump_backtrace+0x0/0x10c) from [<c0419d6c>] (dump_s                                                                                        tack+0x18/0x1c)
    [    2.155090]  r6:00008001 r5:c04fcc20 r4:c0646708 r3:c05fc98c
    [    2.161224] [<c0419d54>] (dump_stack+0x0/0x1c) from [<c0419f68>] (panic+0x64/                                                                                        0x194)
    [    2.169403] [<c0419f04>] (panic+0x0/0x194) from [<c059ec88>] (mount_block_roo                                                                                        t+0x174/0x228)
    [    2.178253]  r3:00000004 r2:00000000 r1:df02df40 r0:c04fcc20
    [    2.184295]  r7:c04fcc88
    [    2.187042] [<c059eb14>] (mount_block_root+0x0/0x228) from [<c059eef0>] (moun                                                                                        t_root+0xc8/0xe8)
    [    2.196228] [<c059ee28>] (mount_root+0x0/0xe8) from [<c059f07c>] (prepare_nam                                                                                        espace+0x16c/0x1c0)
    [    2.205535]  r4:c0643a60
    [    2.208251] [<c059ef10>] (prepare_namespace+0x0/0x1c0) from [<c059e8fc>] (ker                                                                                        nel_init+0xf4/0x120)
    [    2.217712]  r5:c05d948c r4:c05d948c
    [    2.221557] [<c059e808>] (kernel_init+0x0/0x120) from [<c004126c>] (do_exit+0                                                                                        x0/0x65c)
    [    2.229980]  r5:c059e808 r4:00000000

  • 0 回复 leo chen
    Expert 2161 points

    您好：

       我这个用uniflash烧写的时候出现的这个错误会是硬件的问题吗？

  • 0 回复 qun zhou
    TI__Mastermind 25020 points

    如果是担心是硬件问题，建议你可以和BBB开发板上的作对比，特别注意下上拉电阻的设置，如果完全一致的话，还是要看软件配置。

    BBB:http://elinux.org/Beagleboard:BeagleBoneBlack

    另外你用uniflash烧写emmc，有参考过这个做吗？

    http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/73278.aspx

  • 0 回复 Steven Liu1
    Expert 2161 points

    刘工您好：

       我呢个烧写是按照那个做的。之前sdk6.0,sdk7.0都已经成功验证过的。

  • 0 回复 Steven Liu1
    Expert 2161 points

    刘工您好：

        现在我有两个问题：1：就是我用t卡启动的时候现在卡住了，在用镁光的emmc的可以正常启动，但是金士顿的不可以。log还是上面那个，硬件应该没问题。

        2：就是emmc烧写的时候，因为eeprom那部分要删除，所以重新制作烧写的文件，两者兼顾，既能烧写，又去除了eeprom验证代码，现在镁光的板子和金士顿的板子都是烧到一半ethernet gaget这个驱动又要重新安装，但是又安装不了，所以就停止了烧写，log如下，麻烦您了《帮忙看下哦。

    Collected errors:
    * opkg_conf_load: Could not create lock file /var/lib/opkg/lock: No such file or directory.
    INIT: Entering runlevel: 5
    Starting syslogd/klogd: done
    ****************************************************
    ****************************************************

    Sitara Flash Fetcher Script - 07/28/2014

    udhcpc (v1.20.2) started
    Sending discover...
    Sending discover...
    Sending discover...
    No lease, failing
    Getting flasher script from server: 192.168.100.1
    tftp: sendto: Network is unreachable
    Unable to fetch debrick script! Exiting...

  • 0 回复 Steven Liu1
    Expert 2161 points

    您好：

       那个烧写的我和正常的对比了下，发现是文件系统不能成功烧写进来，请问这个是由什么原因造成的呢？

  • 0 回复 qun zhou
    TI__Mastermind 45260 points

    请问您是通过USB烧写还是以太网烧写呢？有没有在BBB上验证过烧写过程呢