Hi,
I fetched a file system named "ramdisk-base.gz" and I copied it to DDR2 to adr 0xc1180000.
Can kernel extract this file?
How can I do to start filesystem from kernel?
I use custom board based to OMAPL138_lcdk board with mxsdk_1_01_00_02.
Here my uboot environment variables :
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ImgCpyNand=nand erase 0x07000000 0x220000;nand write.e 0xc07000000 0x07000000 0x220000
baudrate=115200
bootargs=console=ttyS1,115200n8 root=/dev/ram0 initrd=0xc1180000 rw rootwait ip=off
bootcmd=nand read.e 0xc0700000 0x07000000 0x220000;nand read.e 0xc1180000 0x07300000 0x310000;bootm
bootdelay=3
bootfile=uImage
ethact=DaVinci-EMAC
ethaddr=00:00:90:fe:fa:c3
filesize=1FC860
stderr=serial
stdin=serial
stdout=serial
ver=U-Boot 2012.04.01 (Jul 07 2014 - 15:15:14)
verify=yes
-----------------------------------
fail result appears at starting kernel :
------------------------------------------------------------
OMAP-L138 LCDK initialization passed!
Booting TI User Boot Loader
UBL Version: 1.65
UBL Flashtype: NAND
Starting NAND Copy...
Valid magicnum, 0x55424CBB, found in block 0x00000006.
DONE
Jumping to entry point at 0xC1080000.
NAND: 256 MiB
MMC: davinci: 0
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
In: serial
Out: serial
Err: serial
Net: No ETH PHY detected!!!
Error: Ethernet init failed!
Board Net Initialization Failed
DaVinci-EMAC
Hit any key to stop autoboot: 0
NAND read: device 0 offset 0x7000000, size 0x220000
2228224 bytes read: OK
NAND read: device 0 offset 0x7300000, size 0x310000
3211264 bytes read: OK
## Booting kernel from Legacy Image at c0700000 ...
Image Name: Linux-3.3.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2080768 Bytes = 2 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 (astruc@ubuntu) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #14 PREEMPT Wed Jul 9 15:35:01 CEST 2014
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: AM18x/OMAP-L138 lcdk board
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: 16256
Kernel command line: console=ttyS1,115200n8 root=/dev/ram0 initrd=0xc1180000 rw rootwait ip=off
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60524k/60524k available, 5012k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc4800000 - 0xff000000 ( 936 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc03e1000 (3940 kB)
.init : 0xc03e1000 - 0xc0409000 ( 160 kB)
.data : 0xc040a000 - 0xc0431080 ( 157 kB)
.bss : 0xc04310a4 - 0xc044ca8c ( 111 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 0xc02fa1c8 - 0xc02fa220
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
EMAC: MII PHY configured
bio: create slab <bio-0> at 0
SCSI subsystem initialized
i2c-gpio i2c-gpio.1: using pins 20 (SDA) and 21 (SCL)
Switching to clocksource timer0_1
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
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.
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 118
io scheduler noop registered (default)
da8xx_lcdc da8xx_lcdc.0: GLCD: Found VGA_Monitor panel
Console: switching to colour frame buffer device 80x30
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
console [ttyS1] enabled
serial8250.0: ttyS2 at MMIO 0x1d0d000 (irq = 61) is a AR7
brd: module loaded
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xba (Micron NAND 256MiB 1,8V 16-bit)
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
Creating 4 MTD partitions on "davinci_nand.1":
0x000000000000-0x000000020000 : "u-boot env"
0x000000020000-0x0000000a0000 : "u-boot"
0x0000000a0000-0x0000002a0000 : "kernel"
0x0000002a0000-0x000010000000 : "filesystem"
davinci_nand davinci_nand.1: controller rev. 2.5
davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
davinci_mdio davinci_mdio.0: no live phy, scanning all
davinci_mdio: probe of davinci_mdio.0 failed with error -5
input: gpio-keys-polled as /devices/platform/gpio-keys-polled.0/input/input0
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
omap_rtc: RTC power up reset detected
i2c /dev entries driver
watchdog watchdog: heartbeat 60 sec
cpuidle: using governor ladder
cpuidle: using governor menu
davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
TCP cubic registered
NET: Registered protocol family 17
console [netcon0] enabled
netconsole: network logging started
davinci_emac davinci_emac.1: using random MAC addr: fe:31:50:e7:4b:79
omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
List of all partitions:
1f00 128 mtdblock0 (driver?)
1f01 512 mtdblock1 (driver?)
1f02 2048 mtdblock2 (driver?)
1f03 259456 mtdblock3 (driver?)
No filesystem could mount root, tried: ext3 ext2 cramfs vfat msdos iso9660
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
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Thanks
Seb