You cannot start the file system from the SD card-Linux general technology-Linux technology and application information. The following is a detailed description. I am using the vm7 virtual machine, the source code is linux-2.6.18, make a file system to start from the SD card. The ext3 item is added to the kernel, but this problem occurs after compilation. (You can confirm that there is no problem with Uboot and SD card, and the kernel has been upgraded)
The following is the startup information:
Starting kernel...
Uncompressing Linux ...................................... ........................................ ...................................... done, booting the kernel.
Linux version 2.6.18
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr = 00053177
Machine: DaVinci DA8XX EVM
Memory policy: ECC disabled, Data cache writethrough
DA830 variant 0x0
CPU0: d vivt write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
Built 1 zonelists. Total pages: 32768
Kernel command line: mem = 128 M console = ttyS2, 115200n8 root =/dev/mmcblk0p1 rootfstype = ext3 noinitrd rw ip = 192.168.253.123: 192.168.253.1: 255.255.255.0
PID hash table entries: 1024 (order: 10,409 6 bytes)
Clock event device timer0_0 configured with caps set: 07
Console: color dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128 MB = 128 MB total
Memory: 126080KB available (2929 K code, 645 K data, 184 K init)
Security Framework v1.0.0 initialized
Capability LSM initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: OK
NET: Registered protocol family 16
DaVinci: 128 gpio irqs
Generic PHY: Registered new driver
Usbcore: registered new driver usbfs
Usbcore: registered new driver hub
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 4096 bind 2048)
TCP reno registered
NetWinder Floating Point Emulator V0.97 (double precision)
Squashfs: version 3.1 (2006/08/19) Phillip Lougher
JFFS version 1.0, (C) 1999,200 0 Axis Communications AB
JFFS2 version 2.2. (NAND) (SUMMARY) (C) 2001-2006 Red Hat, Inc.
Yaffs Apr 20 2010 09:48:36 Installing.
JFS: nTxBlock = 985, nTxLock = 7883
Initializing Cryptographic API
Io scheduler noop registered
Io scheduler anticipatory registered (default)
LTT: ltt-facilities init
LTT: ltt-facility-core init in kernel
00da8xx_fb: set_ LCD _pinmux
DA8XX LCD: Raster is going for Reset now...
DA8XX LCD: Configured AC Bias...
DA8XX LCD: Configured Vertical Sync Properties...
DA8XX LCD: Configured Horizontal Sync Properties...
GLCD: Configured to Active Color...
DA8XX LCD: Configured Frame Buffer...
GLCD: Frame Buffer Memory allocation successful
GLCD: Palette Memory allocation successful
GLCD: Initializing the Palette...
GLCD: Palette initialization done successfully
GLCD: Mapping the Video Memory...
Console: switching to color frame buffer device 100x30
DAVINCI-WDT: DaVinci Watchdog Timer: heartbeat 60 sec.
Serial: 8250/16550 driver $ Revision: 1.90 $3 ports, IRQ sharing disabled
Serial8250.0: ttyS0 at MMIO map 0x1c42000 mem 0xfec42000 (irq = 25) is a 16550A
Serial8250.0: ttyS1 at MMIO map 0x1c20400 mem 0xfed0c000 (irq = 53) is a 16550A
Serial8250.0: ttyS2 at MMIO map 0x1d0d000 mem 0xfed0d000 (irq = 61) is a 16550A
RAMDISK driver initialized: 1 RAM disks of 32768 K size 1024 blocksize
Loop: loaded (max 8 devices)
Davinci emac mii Bus: probed
MAC address is 02: 00: 10: 00: 00: 00
TI DaVinci EMAC Linux version updated 4.0
I2c/dev entries driver
Nand_davinci nand_davinci.0: Using soft ECC
NAND device: Manufacturer ID: 0xec, Chip ID: 0xdc (Samsung NAND 512MiB, 3 V 8-bit)
Scanning device for bad blocks
Bad eraseblock 0 at 0x00000000
Bad eraseblock 8 at 0x00100000
Bad eraseblock 9 at 0x00120000
Bad eraseblock 10 at 0x00140000
Bad eraseblock 11 at 0x00160000
Bad eraseblock 12 at 0x00180000
Bad eraseblock 13 at 0x001a0000
Bad eraseblock 14 at 0x001c0000
Bad eraseblock 15 at 0x001e0000
Bad eraseblock 16 at 0x00200000
Bad eraseblock 17 at 0x00220000
Bad eraseblock 18 at 0x00240000
Bad eraseblock 19 at 0x00260000
Bad eraseblock 20 at 0x00280000
Bad eraseblock 21 at 0x002a0000
Bad eraseblock 22 at 0x002c0000
Bad eraseblock 23 at 0x002e0000
Bad eraseblock 24 at 0x00300000
Bad eraseblock 25 at 0x00320000
Bad eraseblock 26 at 0x00340000
Bad eraseblock 27 at 0x00360000
Bad eraseblock 28 at 0x00380000
Bad eraseblock 29 at 0x003a0000
Bad eraseblock 30 at 0x003c0000
Bad eraseblock 31 at 0x003e0000
Bad eraseblock 32 at 0x00400000
Bad eraseblock 33 at 0x00420000
Bad eraseblock 34 at 0x00440000
Bad eraseblock 35 at 0x00460000
Bad eraseblock 36 at 0x00480000
Bad eraseblock 37 at 0x004a0000
Bad eraseblock 38 at 0x004c0000
Bad eraseblock 39 at 0x004e0000
Bad eraseblock 40 at 0x00500000
Bad eraseblock 41 at 0x00520000
Bad eraseblock 42 at 0x00540000
Bad eraseblock 43 at 0x00560000
Bad eraseblock 44 at 0x00580000
Bad eraseblock 45 at 0x005a0000
Bad eraseblock 46 at 0x005c0000
Bad eraseblock 47 at 0x005e0000
Bad eraseblock 48 at 0x00600000
Bad eraseblock 49 at 0x00620000
Bad eraseblock 50 at 0x00640000
Bad eraseblock 51 at 0x00660000
Bad eraseblock 52 at 0x00680000
Bad eraseblock 53 at 0x006a0000
Bad eraseblock 54 at 0x006c0000
Bad eraseblock 55 at 0x006e0000
Bad eraseblock 56 at 0x00700000
Bad eraseblock 57 at 0x00720000
Bad eraseblock 58 at 0x00740000
Bad eraseblock 59 at 0x00760000
Bad eraseblock 60 at 0x00780000
Bad eraseblock 61 at 0x007a0000
Bad eraseblock 62 at 0x007c0000
Bad eraseblock 63 at 0x007e0000
Bad eraseblock 64 at 0x00800000
Bad eraseblock 65 at 0x00820000
Bad eraseblock 66 at 0x00840000
Bad eraseblock 67 at 0x00860000
Bad eraseblock 68 at 0x00880000
Bad eraseblock 69 at 0x008a0000
Bad eraseblock 70 at 0x008c0000
Bad eraseblock 71 at 0x008e0000
Bad eraseblock 72 at 0x00900000
Bad eraseblock 73 at 0x00920000
Bad eraseblock 74 at 0x00940000
Bad eraseblock 75 at 0x00960000
Bad eraseblock 76 at 0x00980000
Bad eraseblock 77 at 0x009a0000
Bad eraseblock 78 at 0x009c0000
Bad eraseblock 79 at 0x009e0000
Bad eraseblock 80 at 0x00a00000
Bad eraseblock 81 at 0x00a20000
Bad eraseblock 82 at 0x00a40000
Bad eraseblock 83 at 0x00a60000
Bad eraseblock 84 at 0x00a80000
Bad eraseblock 85 at 0x00aa0000
Bad eraseblock 86 at 0x00ac0000
Bad eraseblock 87 at 0x00ae0000
Bad eraseblock 88 at 0x00b00000
Bad eraseblock 89 at 0x00b20000
Bad eraseblock 90 at 0x00b40000
Bad eraseblock 91 at 0x00b60000
Bad eraseblock 92 at 0x00b80000
Bad eraseblock 93 at 0x00ba0000
Bad eraseblock 94 at 0x00bc0000
Bad eraseblock 95 at 0x00be0000
Bad eraseblock 96 at 0x00c00000
Bad eraseblock 97 at 0x00c20000
Bad eraseblock 98 at 0x00c40000
Bad eraseblock 99 at 0x00c60000
Bad eraseblock 100 at 0x00c80000
Bad eraseblock 101 at 0x00ca0000
Bad eraseblock 102 at 0x00cc0000
Bad eraseblock 103 at 0x00ce0000
Bad eraseblock 104 at 0x00d00000
Bad eraseblock 105 at 0x00d20000
Bad eraseblock 106 at 0x00d40000
Bad eraseblock 107 at 0x00d60000
Bad eraseblock 108 at 0x00d80000
Bad eraseblock 109 at 0x00da0000
Bad eraseblock 110 at 0x00dc0000
Bad eraseblock 111 at 0x00de0000
Bad erase block 112 at 0x00e00000
Bad eraseblock 113 at 0x00e20000
Bad eraseblock 114 at 0x00e40000
Bad eraseblock 115 at 0x00e60000
Bad eraseblock 116 at 0x00e80000
Bad eraseblock 117 at 0x00ea0000
Bad eraseblock 118 at 0x00ec0000
Bad eraseblock 119 at 0x00ee0000
Bad eraseblock 120 at 0x00f00000
Bad eraseblock 2654 at 0x14bc0000
Creating 4 MTD partitions on "nand_davinci.0 ":
0x00000000-0x00020000: "bootloader"
0x00020000-0x00040000: "params"
0x00040000-0x00240000: "kernel"
0x0024-0x20000000: "filesystem"
Nand_davinci nand_davinci.0: hardware revision: 2.5
Spi flash Manufacture code ff not supported <4> spi_flash: probe of spi0.0 failed with error-1
Dm_spi.0: davinci SPI Controller driver at 0xc88fa000 (irq = 20) use_dma = 1
Dm_spi.1: davinci SPI Controller driver at 0xc88fc000 (irq = 56) use_dma = 1
Ohci ohci.0: DA8xx OHCI
Ohci ohci.0: new USB bus registered, assigned bus number 1
Waiting for usb phy clock good...
Ohci ohci.0: irq 59, io mem 0x01e25000
Usb usb1: configuration #1 chosen from 1 choice
Hub 1-. 0: USB hub found
Hub 1-0: 1 port detected
Usbcore: registered new driver libusual
Usbcore: registered new driver usbkbd
Drivers/usb/input/usbkbd. c: usb hid Boot Protocol keyboard driver
Usbcore: registered new driver usbmouse
Drivers/usb/input/usbmouse. c: v1.6: usb hid Boot Protocol mouse driver
Musb_hdrc: version 6.0, cppi4.1-dma, host, debug = 0
Waiting for usb phy clock good...
Musb_hdrc: USB Host mode controller at c8900000 using DMA, IRQ 58
Musb_hdrc: musb hdrc host driver
Musb_hdrc: new USB bus registered, assigned bus number 2
Usb usb2: configuration #1 chosen from 1 choice
Hub 2-. 0: USB hub found
Hub 2-0: 1 port detected
Dummy_hcd: USB Host + Gadget Emulator and driver 02 May 2005
Dummy_hcd: Dummy host controller
Dummy_hcd: new USB bus registered, assigned bus number 3
Usb usb3: configuration #1 chosen from 1 choice
Hub 3-0: 1. 0: USB hub found
Hub 3-0: 1 port detected
Gs_bind: Gadget Serial v2.2 bound
Gs_module_init: Gadget Serial v2.2 loaded
Mice: PS/2 mouse device common for all mice
Ds12026 ds12026.0: rtc intf: proc
Ds12026 ds12026.0: rtc intf: dev (254: 0)
Ds12026 ds12026.0: rtc core: registered ds12026 as rtc0
Sdcs value: 0x0000
Sdcs value: 0x0000 <6> davinci-mmc davinci-mmc.0: Supporting 8-bit mode
Davinci-mmc davinci-mmc.0: Supporting 4-bit mode
Davinci-mmc davinci-mmc.0: Using DMA mode
Advanced Linux Sound Architecture Driver Version 1.0.12rc1 (Thu Jun 22 13:55:50 2006 UTC ).
ASoC version 0.13.1
AIC3X Audio Codec 0.2
ALSA device list:
No soundcards found.
IPv4 over IPv4 tunneling driver
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Time: timer0_1 clocksource has been installed.
Clock event device timer0_0 configured with caps set: 08
Switched to high resolution mode on CPU 0
Ds12026 ds12026.0: setting the system clock to 2000-01-01 00:00:00 (946684800)
Gs_disconnect: Gadget Serial disconnected
Mmcblk0: mmc0: def7 SD02G 1931264KiB (ro)
Mmcblk0: p1
Usb 3-1: new high speed USB device using dummy_hcd and address 2
Gs_disconnect: Gadget Serial disconnected
Usb 3-1: configuration #1 chosen from 1 choice
Gs_set_config: Gadget Serial configured, high speed BULK config
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Gateway not on directly connected network.
VFS: Cannot open root device "mmcblk0p1" or unknown-block (254,1)
Please append a correct "root =" boot option
Kernel panic-not syncing: VFS: Unable to mount root fs on unknown-block (254,1)
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