We have about 50 pieces of PD Logic experimenter kit which come with the OMAP-L138 SOM-M1 board.
Some of them were having boot problems so I decided to pick one and erased the SPI flash with the flasher tool according to the users manual document that comes with the downloaded flasher tool.
After that I reloaded SPI Flash with UBL and U-Boot which were also inculded in the flasher tool file. Everything was also done according to the users manual document.
Now the problem is that the boot process of our Linux kernel image gets stuck on the following line:
Waiting for root device /dev/mmcblk0p2...
The SD card with the Linux kernel image is fine and not broken, when I put it into an old board of the same type it boots without problems.
This is the output which I got from the serial interface:
OMAP-L138 initialization passed!
Booting TI User Boot Loader
UBL Version: 1.65
Device OPP (300MHz, 1.2V)
UBL Flashtype: SPI
Starting SPI Memory Copy...
Valid magicnum, 0x55424CBB, found at offset 0x00010000.
DONE
Jumping to entry point at 0xC1080000.
MMC: davinci: 0
SF: Detected M25P64 with page size 256, total 8 MiB
In: serial
Out: serial
Err: serial
ARM Clock : 300000000 Hz
DDR Clock : 132000000 Hz
Net: Ethernet PHY: GENERIC @ 0x00
DaVinci-EMAC
Hit any key to stop autoboot: 0
reading boot.scr
251 bytes read
## Executing script at c0600000
reading uImage
2565056 bytes read
## Booting kernel from Legacy Image at c0700000 ...
Image Name: Linux-3.3.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2564992 Bytes = 2.4 MiB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.3.0 (abajric@pcinf035) (gcc version 4.7.3 (Buildroot 2014.05) ) #2 PREEMPT Wed Nov 26 09:59:32 CET 2014
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: DaVinci DA850/OMAP-L138/AM18x EVM
Memory policy: ECC disabled, Data cache writeback
BUG: mapping for 0x80000000 at 0xfffe0000 out of vmalloc space
DaVinci da850/omap-l138/am18x variant 0x1
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128
Kernel command line: mem=32M console=ttyS2,115200n8 root=/dev/mmcblk0p2 ro rootwait ip=off
PID hash table entries: 128 (order: -3, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 32MB = 32MB total
Memory: 27076k/27076k available, 5692k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc2800000 - 0xff000000 ( 968 MB)
lowmem : 0xc0000000 - 0xc2000000 ( 32 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc04b9000 (4804 kB)
.init : 0xc04b9000 - 0xc04e4000 ( 172 kB)
.data : 0xc04e4000 - 0xc051f440 ( 238 kB)
.bss : 0xc051f440 - 0xc053ce8c ( 119 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:245
Console: colour dummy device 80x30
Calibrating delay loop... 148.88 BogoMIPS (lpj=744448)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc0392ee0 - 0xc0392f38
devtmpfs: initialized
gpiochip_add: registered GPIOs 0 to 31 on device: DaVinci
gpiochip_add: registered GPIOs 32 to 63 on device: DaVinci
gpiochip_add: registered GPIOs 64 to 95 on device: DaVinci
gpiochip_add: registered GPIOs 96 to 127 on device: DaVinci
gpiochip_add: registered GPIOs 128 to 143 on device: DaVinci
DaVinci: 144 gpio irqs
print_constraints: dummy:
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
print_constraints: VDCDC1: 3200 <--> 3300 mV at 3300 mV
print_constraints: VDCDC2: 1750 <--> 3300 mV at 3300 mV
print_constraints: VDCDC3: 950 <--> 1350 mV at 1200 mV
print_constraints: LDO1: 1800 mV
print_constraints: LDO2: 1150 <--> 1300 mV at 1200 mV
pca953x 1-0020: failed reading register
pca953x 1-0021: interrupt support not compiled in
gpiochip_add: registered GPIOs 160 to 175 on device: tca6416
i2c-gpio i2c-gpio.1: using pins 20 (SDA) and 21 (SCL)
Advanced Linux Sound Architecture Driver Version 1.0.24.
Switching to clocksource timer0_1
musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
musb-hdrc musb-hdrc: dma type: dma-cppi41
MUSB255 controller's USBSS revision = 4ea11003
Waiting for USB PHY clock good...
musb-hdrc musb-hdrc: USB OTG mode controller at fee00000 using DMA, IRQ 58
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
EMAC: MII PHY configured, RMII PHY will not be functional
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 52
io scheduler noop registered (default)
da8xx_lcdc da8xx_lcdc.0: GLCD: Found Sharp_LK043T1DG01 panel
Console: switching to colour frame buffer device 60x34
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0x1c42000 (irq = 25) is a AR7
serial8250.0: ttyS1 at MMIO 0x1d0c000 (irq = 53) is a AR7
serial8250.0: ttyS2 at MMIO 0x1d0d000 (irq = 61) is a AR7
console [ttyS2] enabled
brd: module loaded
ahci ahci: forcing PORTS_IMPL to 0x1
ahci ahci: AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl platform mode
ahci ahci: flags: ncq sntf pm led clo only pmp pio slum part ccc
scsi0 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x01e18000-0x01e19fff] port 0x100 irq 67
spi_davinci spi_davinci.1: DMA: supported
spi_davinci spi_davinci.1: DMA: RX channel: 18, TX channel: 19, event queue: 0
m25p80 spi1.0: m25p64 (8192 Kbytes)
Creating 6 MTD partitions on "m25p80":
0x000000000000-0x000000010000 : "UBL"
0x000000010000-0x000000090000 : "U-Boot"
0x000000090000-0x0000000a0000 : "U-Boot-Env"
0x0000000a0000-0x000000320000 : "Kernel"
0x000000320000-0x000000720000 : "Filesystem"
0x0000007f0000-0x000000800000 : "MAC-Address"
Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
spi_davinci spi_davinci.1: Controller at 0xfef0e000
davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
davinci_mdio davinci_mdio.0: detected phy mask fffffffe
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[0]: device davinci_mdio-0:00, driver SMSC LAN8710/LAN8720
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
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
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
input: gpio-keys-polled as /devices/platform/gpio-keys-polled.1/input/input0
input: TPS6507x Touchscreen as /devices/platform/i2c-gpio.1/i2c-1/1-0048/input/input1
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
omap_rtc: RTC power up reset detected
omap_rtc: already running
i2c /dev entries driver
ata1: SATA link down (SStatus 0 SControl 300)
lirc_dev: IR Remote Control driver registered, major 253
IR NEC protocol handler initialized
IR RC5(x) protocol handler initialized
IR RC6 protocol handler initialized
IR JVC protocol handler initialized
IR Sony protocol handler initialized
IR RC5 (streamzap) protocol handler initialized
IR SANYO protocol handler initialized
IR MCE Keyboard/mouse protocol handler initialized
IR LIRC bridge handler initialized
Linux video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
USB Video Class driver (1.1.1)
watchdog watchdog: heartbeat 60 sec
cpuidle: using governor ladder
cpuidle: using governor menu
davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
usbcore: registered new interface driver snd-usb-audio
soc-audio soc-audio.0: ASoC: Failed to create card debugfs directory
_regulator_get: 1-0018 supply IOVDD not found, using dummy regulator
_regulator_get: 1-0018 supply DVDD not found, using dummy regulator
_regulator_get: 1-0018 supply AVDD not found, using dummy regulator
_regulator_get: 1-0018 supply DRVDD not found, using dummy regulator
asoc: tlv320aic3x-hifi <-> davinci-mcasp.0 mapping ok
ALSA device list:
#0: DA850/OMAP-L138 EVM
TCP cubic registered
NET: Registered protocol family 17
regulator_init_complete: LDO2: incomplete constraints, leaving on
regulator_init_complete: LDO1: incomplete constraints, leaving on
regulator_init_complete: VDCDC3: incomplete constraints, leaving on
regulator_init_complete: VDCDC2: incomplete constraints, leaving on
regulator_init_complete: VDCDC1: incomplete constraints, leaving on
console [netcon0] enabled
netconsole: network logging started
davinci_emac davinci_emac.1: using random MAC addr: 82:8c:95:77:3d:a3
omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:12 UTC (946684812)
Waiting for root device /dev/mmcblk0p2...
