no daughter board in my development board

where can to edit these two?I find them in menuconfig or to find them in code?

Hi,

It's all happening in the am335x_evm_setup() function inside <linux_folder>/arch/arm/mach-omap2/board-am335xevm.c file.

There are many ways to workaround this once you read the code.

Best regards,
Miroslav

this problem is solved,but still have another problem exists.

U-Boot 2011.09-00000-g518a597 (Apr 15 2013 - 11:22:22)

I2C:   ready

DRAM:  256 MiB

WARNING: Caches not enabled

Incorrect magic number in EEPROM

NAND:  HW ECC Hamming Code selected

512 MiB

MMC:   OMAP SD/MMC: 0

*** Warning - bad CRC, using default environment

Net:   cpsw

Loaded environment from uEnv.txt

Importing environment from mmc ...

Running uenvcmd ...

reading uImage

3568664 bytes read

## Booting kernel from Legacy Image at 81000000 ...

   Image Name:   Linux-3.2.0-gb02ab39-dirty

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3568600 Bytes = 3.4 MiB

   Load Address: 80008000

   Entry Point:  80008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

[    0.000000] Linux version 3.2.0-gb02ab39-dirty (colinchu@colin-ubuntu10) (gcc version 4.4.3 (GCC) ) #1 Mon Apr 15 15:44:04 CST 2013

[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d

[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache

[    0.000000] Machine: am335xevm

[    0.000000] Memory policy: ECC disabled, Data cache writeback

[    0.000000] AM335X ES1.0 (sgx neon )

[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024

[    0.000000] Kernel command line: console=ttyO0,115200n8 androidboot.console=ttyO0 mem=256M root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait init=/init ip=off

[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)

[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)

[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)

[    0.000000] Memory: 256MB = 256MB total

[    0.000000] Memory: 251544k/251544k available, 10600k 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]     vmalloc : 0xd0800000 - 0xff000000   ( 744 MB)

[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)

[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)

[    0.000000]       .text : 0xc0008000 - 0xc065d000   (6484 kB)

[    0.000000]       .init : 0xc065d000 - 0xc0698000   ( 236 kB)

[    0.000000]       .data : 0xc0698000 - 0xc06ee320   ( 345 kB)

[    0.000000]        .bss : 0xc06ee344 - 0xc081d9c8   (1214 kB)

[    0.000000] NR_IRQS:396

[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts

[    0.000000] Total of 128 interrupts on 1 active controller

[    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz

[    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz

[    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms

[    0.000000] Console: colour dummy device 80x30

[    0.000213] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)

[    0.058563] pid_max: default: 32768 minimum: 301

[    0.058746] Security Framework initialized

[    0.058807] Mount-cache hash table entries: 512

[    0.059295] CPU: Testing write buffer coherency: ok

[    0.080718] omap_hwmod: gfx: failed to hardreset

[    0.097473] omap_hwmod: pruss: failed to hardreset

[    0.098449] print_constraints: dummy:

[    0.098785] NET: Registered protocol family 16

[    0.100219] OMAP GPIO hardware version 0.1

[    0.101623] omap_mux_init: Add partition: #1: core, flags: 0

[    0.103698]  omap2_mcspi.1: alias fck already exists

[    0.103851]  omap2_mcspi.2: alias fck already exists

[    0.104034]  edma.0: alias fck already exists

[    0.104064]  edma.0: alias fck already exists

[    0.104095]  edma.0: alias fck already exists

[    0.115997] bio: create slab <bio-0> at 0

[    0.117248] SCSI subsystem initialized

[    0.118347] usbcore: registered new interface driver usbfs

[    0.118499] usbcore: registered new interface driver hub

[    0.118743] usbcore: registered new device driver usb

[    0.118896] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3

[    0.119110] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1

[    0.119934] Advanced Linux Sound Architecture Driver Version 1.0.24.

[    0.120635] Bluetooth: Core ver 2.16

[    0.120727] NET: Registered protocol family 31

[    0.120758] Bluetooth: HCI device and connection manager initialized

[    0.120788] Bluetooth: HCI socket layer initialized

[    0.120788] Bluetooth: L2CAP socket layer initialized

[    0.120819] Bluetooth: SCO socket layer initialized

[    0.121063] Switching to clocksource gp timer

[    0.131927] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)

[    0.132141] musb-hdrc musb-hdrc.0: dma type: pio

[    0.132965] musb-hdrc musb-hdrc.0: USB OTG mode controller at d081c000 using PIO, IRQ 18

[    0.133270] musb-hdrc musb-hdrc.1: dma type: pio

[    0.133605] musb-hdrc musb-hdrc.1: MUSB HDRC host driver

[    0.133697] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1

[    0.133880] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

[    0.133911] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

[    0.133941] usb usb1: Product: MUSB HDRC host driver

[    0.133941] usb usb1: Manufacturer: Linux 3.2.0-gb02ab39-dirty musb-hcd

[    0.133972] usb usb1: SerialNumber: musb-hdrc.1

[    0.134704] hub 1-0:1.0: USB hub found

[    0.134735] hub 1-0:1.0: 1 port detected

[    0.135314] musb-hdrc musb-hdrc.1: USB Host mode controller at d081e800 using PIO, IRQ 19

[    0.135742] NET: Registered protocol family 2

[    0.135986] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)

[    0.136444] TCP established hash table entries: 8192 (order: 4, 65536 bytes)

[    0.136657] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)

[    0.136810] TCP: Hash tables configured (established 8192 bind 8192)

[    0.136810] TCP reno registered

[    0.136840] UDP hash table entries: 256 (order: 0, 4096 bytes)

[    0.136871] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

[    0.137145] NET: Registered protocol family 1

[    0.137512] RPC: Registered named UNIX socket transport module.

[    0.137542] RPC: Registered udp transport module.

[    0.137542] RPC: Registered tcp transport module.

[    0.137573] RPC: Registered tcp NFSv4.1 backchannel transport module.

[    0.137908] NetWinder Floating Point Emulator V0.97 (double precision)

[    0.315704] ashmem: initialized

[    0.316070] VFS: Disk quotas dquot_6.5.2

[    0.316162] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)

[    0.317291] msgmni has been set to 491

[    0.318634] io scheduler noop registered

[    0.318634] io scheduler deadline registered

[    0.318725] io scheduler cfq registered (default)

[    0.319885] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0

[    0.881286] console [ttyO0] enabled

[    0.885589] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1

[    0.893432] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2

[    0.901214] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3

[    0.908996] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4

[    0.916809] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5

[    0.932861] brd: module loaded

[    0.940429] loop: module loaded

[    0.944000] i2c-core: driver [tsl2550] using legacy suspend method

[    0.950500] i2c-core: driver [tsl2550] using legacy resume method

[    0.958160] mtdoops: mtd device (mtddev=name/number) must be supplied

[    0.965148] omap2-nand driver initializing

[    0.969543] OneNAND driver initializing

[    0.974243] CAN device driver interface

[    0.978271] CAN bus driver for Bosch D_CAN controller 1.0

[    0.984283] PPP generic driver version 2.4.2

[    0.988952] PPP BSD Compression module registered

[    0.993927] PPP Deflate Compression module registered

[    0.999389] usbcore: registered new interface driver cdc_ether

[    1.005615] usbcore: registered new interface driver cdc_eem

[    1.011688] usbcore: registered new interface driver dm9601

[    1.017608] usbcore: registered new interface driver cdc_subset

[    1.023895] cdc_ncm: 04-Aug-2011

[    1.027343] usbcore: registered new interface driver cdc_ncm

[    1.033447] usbcore: registered new interface driver cdc_acm

[    1.039398] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters

[    1.047821] Initializing USB Mass Storage driver...

[    1.053100] usbcore: registered new interface driver usb-storage

[    1.059417] USB Mass Storage support registered.

[    1.064514] usbcore: registered new interface driver usbserial

[    1.070709] USB Serial support registered for generic

[    1.076110] usbcore: registered new interface driver usbserial_generic

[    1.083007] usbserial: USB Serial Driver core

[    1.087646] USB Serial support registered for GSM modem (1-port)

[    1.094146] usbcore: registered new interface driver option

[    1.100006] option: v0.7.2:USB Driver for GSM modems

[    1.107696]  gadget: Mass Storage Function, version: 2009/09/11

[    1.113983]  gadget: Number of LUNs=1

[    1.117828]  lun0: LUN: removable file: (no medium)

[    1.123321]  gadget: android_usb ready

[    1.127319] musb-hdrc musb-hdrc.0: MUSB HDRC host driver

[    1.132965] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2

[    1.140899] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002

[    1.148071] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1

[    1.155670] usb usb2: Product: MUSB HDRC host driver

[    1.160888] usb usb2: Manufacturer: Linux 3.2.0-gb02ab39-dirty musb-hcd

[    1.167877] usb usb2: SerialNumber: musb-hdrc.0

[    1.173339] hub 2-0:1.0: USB hub found

[    1.177307] hub 2-0:1.0: 1 port detected

[    1.182281] mousedev: PS/2 mouse device common for all mice

[    1.189544] using rtc device, omap_rtc, for alarms

[    1.194519] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0

[    1.201477] i2c /dev entries driver

[    1.205230] Linux video capture interface: v2.00

[    1.210296] usbcore: registered new interface driver uvcvideo

[    1.216369] USB Video Class driver (1.1.1)

[    1.221405] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec

[    1.228057] device-mapper: uevent: version 1.0.3

[    1.233184] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.com

[    1.242095] Bluetooth: HCI UART driver ver 2.2

[    1.246765] Bluetooth: HCI H4 protocol initialized

[    1.251831] Bluetooth: HCILL protocol initialized

[    1.256774] Bluetooth: Bluetooth Driver for TI WiLink - Version 1.0

[    1.263580] _regulator_get: deviceless supply vdd_mpu not found, using dummy regulator

[    1.272216] cpuidle: using governor ladder

[    1.276733] cpuidle: using governor menu

[    1.281219] usbcore: registered new interface driver ushc

[    1.287261] usbcore: registered new interface driver usbhid

[    1.293151] usbhid: USB HID core driver

[    1.297760] logger: created 256K log 'log_main'

[    1.302703] logger: created 256K log 'log_events'

[    1.307800] logger: created 256K log 'log_radio'

[    1.312835] logger: created 256K log 'log_system'

[    1.318389] usbcore: registered new interface driver snd-usb-audio

[    1.325836] ALSA device list:

[    1.328979]   No soundcards found.

[    1.332580] oprofile: hardware counters not available

[    1.337890] oprofile: using timer interrupt.

[    1.342590] nf_conntrack version 0.5.0 (3930 buckets, 15720 max)

[    1.349426] ip_tables: (C) 2000-2006 Netfilter Core Team

[    1.355255] TCP cubic registered

[    1.358856] NET: Registered protocol family 10

[    1.364471] IPv6 over IPv4 tunneling driver

[    1.369689] NET: Registered protocol family 17

[    1.374450] can: controller area network core (rev 20090105 abi 8)

[    1.381103] NET: Registered protocol family 29

[    1.385803] can: raw protocol (rev 20090105)

[    1.390289] can: broadcast manager protocol (rev 20090105 t)

[    1.396484] Bluetooth: RFCOMM TTY layer initialized

[    1.401611] Bluetooth: RFCOMM socket layer initialized

[    1.407043] Bluetooth: RFCOMM ver 1.11

[    1.411010] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[    1.416595] Bluetooth: BNEP filters: protocol multicast

[    1.422119] Bluetooth: HIDP (Human Interface Emulation) ver 1.2

[    1.428558] Registering the dns_resolver key type

[    1.433593] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3

[    1.441680] ThumbEE CPU extension supported.

[    1.446258] mux: Failed to setup hwmod io irq -22

[    1.452056] Power Management for AM33XX family

[    1.456970] Trying to load am335x-pm-firmware.bin (60 secs timeout)

[    1.463714] Copied the M3 firmware to UMEM

[    1.468048] omap_hwmod: wkup_m3: wkup_m3: hwmod data error: OMAP4 does not support st_shift

[    1.481628] clock: disabling unused clocks to save power

[    1.489166] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)

[    1.498626] Waiting for root device /dev/mmcblk0p2...

how to solve the problem?

Hi,

Are you sure your rootfstype is ext4 and not ext3?

Kernel command line: console=ttyO0,115200n8 androidboot.console=ttyO0 mem=256M root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait init=/init ip=off

Is your SD Card Detect pin connected? Please check the AM335x datasheet to see which pins can be pinmuxed to be used as SD Card Detect and then check your board file to see if you are using any of these pins for Card Detect.

Best regards,
Miroslav

In my development board, it has only one eeprom. In the am335xevm board, it has three eeprom.

Because I retains ethernet eeprom,the others is removed.

so the am335x cannot exactly read the mac of eeprom,the machine will be halt.

I solve the above problem,but still have some problems

[    1.789093] Waiting for root device /dev/mmcblk0p2...

[    1.836547] mmc0: new high speed SDHC card at address 59b4

[    1.842956] mmcblk0: mmc0:59b4 SD    7.35 GiB (ro)

[    1.849792]  mmcblk0: p1 p2 p3

[    1.924682] VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2)

[    1.932098] Please append a correct "root=" boot option; here are the availab                  le partitions:

[    1.940948] b300         7715840 mmcblk0  driver: mmcblk

[    1.946594]   b301           72261 mmcblk0p1 00000000-0000-0000-0000-00000000                  0000mmcblk0p1

[    1.955322]   b302         3855600 mmcblk0p2 00000000-0000-0000-0000-00000000                  0000mmcblk0p2

[    1.964019]   b303         3783307 mmcblk0p3 00000000-0000-0000-0000-00000000                  0000mmcblk0p3

[    1.972747] Kernel panic - not syncing: VFS: Unable to mount root fs on unkno                  wn-block(179,2)

[    1.981628] Backtrace:

[    1.984252] [<c001803c>] (dump_backtrace+0x0/0x10c) from [<c04a967c>] (dump_s                  tack+0x18/0x1c)

[    1.993133]  r7:c0592468 r6:00008000 r5:c06bd810 r4:c06bd810

[    1.999114] [<c04a9664>] (dump_stack+0x0/0x1c) from [<c04a96e4>] (panic+0x64/                  0x198)

[    2.007202] [<c04a9680>] (panic+0x0/0x198) from [<c062cd80>] (mount_block_roo                  t+0x174/0x228)

[    2.016021]  r3:00000000 r2:00000000 r1:cf81df58 r0:c0592518

[    2.022003] [<c062cc0c>] (mount_block_root+0x0/0x228) from [<c062cee4>] (moun                  t_root+0xb0/0xcc)

[    2.031066] [<c062ce34>] (mount_root+0x0/0xcc) from [<c062d068>] (prepare_nam                  espace+0x168/0x1c0)

[    2.040344]  r4:c06bc8a0

[    2.042999] [<c062cf00>] (prepare_namespace+0x0/0x1c0) from [<c062c2f8>] (ker                  nel_init+0xf0/0x124)

[    2.052368]  r5:c066586c r4:c06bc840

[    2.056152] [<c062c208>] (kernel_init+0x0/0x124) from [<c003fe78>] (do_exit+0                  x0/0x6ac)

[    2.064514]  r5:c062c208 r4:00000000

how to solve this problem ?

Hi,

There seems to be an issue with the root partition on your SD card.

How did you format your SD card? What did you use? Is the root file system on mmcblk0p2 partition?

Best regards,
Miroslav