Where did you get this ramdisk image from?
I made the ramdisk image using the following procedure:
dd if=/dev/zero of=ramdisk bs=1k count=16384 /sbin/mke2fs -q -F -m0 ramdisk mount -o loop ramdisk mountpoint cd mountpoint tar xf ../fsimage.tar sync sleep 1 sync cd .. umount mountpoint sync gzip -9 ramdisk mkimage -n 'DA Ramdisk Image' -A ppc -O linux -T ramdisk -C gzip -d ramdisk.gz initrd
What makes you think it is working at all?
I performed the following procedure to verify it.
[root@hhl initrd]# dd if=initrd of=ramdisk.gz bs=64 skip=1 23583+1 records in 23583+1 records out [root@hhl initrd]# gzip -d ramdisk.gz [root@hhl initrd]# mount -o loop ramdisk mountpoint [root@hhl initrd]# ls -al mountpoint total 26 drwxr-xr-x 10 root root 1024 Mar 20 15:34 drwxr-xr-x 3 root root 4096 Apr 1 16:31 drwxr-xr-x 2 root root 1024 Mar 20 15:34 drwxr-xr-x 2 root root 2048 Mar 20 15:34 drwxr-xr-x 6 root root 1024 Mar 20 15:34 drwxr-xr-x 2 root root 2048 Mar 20 15:34 drwxr-xr-x 2 root root 12288 Mar 20 15:34 drwxr-xr-x 2 root root 1024 Mar 20 15:34 drwxr-xr-x 5 root root 1024 Mar 20 15:34 drwxr-xr-x 4 root root 1024 Mar 20 15:34
Best regards,
Wolfgang Denk
Below is a log of my BDI session (where I load the kernel and initrd) and beneath that is a log of my u-boot session - note: the command line is shown.
I have studied the code in rd.c, and the message is coming from a routine called "flush_window" - there is something I do not understand - I do not see a call to flush_window anywhere, and the declaration has an __init in front of it. Can anyone explain to me how the routine gets called?
BDI>reset BDI>- TARGET: processing user reset request BDI>- TARGET: reseting target passed BDI>- TARGET: processing target startup .... BDI>- TARGET: processing target startup passed BDI>go - Target started with DBCR0 = 0x80000001
BDI>halt Target state : debug mode Debug entry cause : JTAG stop request Current PC : 0x03fd236c Current CR : 0x24002042 Current MSR : 0x00021000 Current LR : 0x03fd236c
BDI>load 0x100000 vmlinux.PPCBoot BIN Loading vmlinux.PPCBoot , please wait .... Loading program file passed BDI>load 0x200000 initrd BIN Loading initrd , please wait .... Loading program file passed
BDI>go 0x03fd236c
- Target started with DBCR0 = 0x80000001
U-Boot 0.2.0 (Mar 27 2003 - 09:29:40)
CPU: IBM PowerPC 405GPr Rev. A at 266.666 MHz (PLB=133, OPB=66, EBC=26 MHz) PCI async ext clock used, internal PCI arbiter enabled 16 kB I-Cache 16 kB D-Cache
Board: ### No HW ID - assuming WALNUT405 I2C: ready DRAM: 64 MB
Now running in RAM - U-Boot at: 03fcf000 FLASH: 512 kB *** Warning - bad CRC, using default environment
PCI: Bus Dev VenId DevId Class Int PCI Autoconfig: Memory region: [20000000-27ffffff] PCI Autoconfig: I/O region: [800000-3ffffff] PCI Scan: Found Bus 0, Device 0, Function 0 PCI Scan: Found Bus 0, Device 7, Function 0 PCI Autoconfig: BAR 0, Mem, size=0x1000000, address=0x20000000 PCI Autoconfig: BAR 1, I/O, size=0xffffff04, No room in resource PCI Autoconfig: BAR 2, I/O, size=0x1000000, address=0x1000000 00 07 1394 0978 0200 1c
In: serial Out: serial Err: serial
U-Boot relocated to 03fcf000 IDE: Bus 0: port = c OK
H Device 0: Model: SanDisk SDCFB-32 Firm: Vdg 1.23. Ser#: 003917A2203F2620 Type: Removable Hard Disk Capacity: 30.6 MB = 0.0 GB (62720 x 512) => => imi 0x100000
## Checking Image at 00100000 ... Image Name: Linux-2.4.18_mvl30-walnut Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 298672 Bytes = 291.7 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK
=> imi 0x200000 ## Checking Image at 00200000 ... Image Name: DA Ramdisk Image Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 1509352 Bytes = 1.4 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK => printenv bootargs=root=/dev/ram rw ramdisk_size=8192 console=ttyS0,9600n8 console=tty0 bootcmd=bootm ffc0000 baudrate=9600 loads_echo=1 stdin=serial stdout=serial stderr=serial
Environment size: 169/65532 bytes => bootm 0x100000 0x200000 ## Booting image at 00100000 ... Image Name: Linux-2.4.18_mvl30-walnut Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 298672 Bytes = 291.7 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Current stack ends at 0x03F9EBE8 => set upper limit to 0x00800000 ## cmdline at 0x007FFF00 ... 0x007FFF44 memstart = 0x00000000 memsize = 0x04000000 flashstart = 0xFFF80000 flashsize = 0x00080000 flashoffset = 0x00031000 sramstart = 0x00000000 sramsize = 0x00000000 bootflags = 0x001E8480 procfreq = 266.666 MHz plb_busfreq = 133.333 MHz pci_busfreq = 33.333 MHz ethaddr = 00:00:00:00:0:00 IP addr = 0.0.0.0 baudrate = 9600 bps
## Loading RAMDisk Image at 00200000 ... Image Name: DA Ramdisk Image Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 1509352 Bytes = 1.4 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK
## initrd at 0x00200040 ... 0x00370827 (len=1509352=0x1707E8) Loading Ramdisk to 03e2d000, end 03f9d7e8 ... OK ## Transferring control to Linux (at address 00000000) ...
Linux version 2.4.18_mvl30-walnut (root@hhl) (gcc version 3.2.1 20020930 (MontaVista)) #33 Tue Mar 25
<6>IBM Sycamore (IBM405GPr) Platform On node 0 totalpages: 16384 zone(0): 16384 pages.
zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/ram rw ramdisk_size=8192 console=ttyS0,9600n8 console=tty0 serial_console_setup options = 9600n8 baud = 9600 state->baud_base = 691200 baud = 9600 quot = 72 info->io_type = SERIAL_IO_MEM info->iomem_base = ef600300 Calibrating delay loop... 266.24 BogoMIPS Memory: 62268k available (512k kernel code, 212k data, 32k init, 0k highmem) Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes) Inode-cache hash table entries: 4096 (order: 3, 32768 bytes) Mount-cache hash table entries: 1024 (order: 1, 8192 bytes) Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 16384 (order: 4, 65536 bytes) POSIX conformance testing by UNIFIX Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 OCP uart ver 1.2 init complete Starting kswapd Disabling the Out Of Memory Killer Serial driver version 5.05c (2001-07-08) with no serial options enabled ttyS00 at 0x0000 (irq = 0) is a 16550A ttyS01 at 0x0000 (irq = 1) is a 16550A block: 128 slots per queue, batch=32 RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize Tracer: Initialization complete RAMDISK: Compressed image found at block 0 RAMDISK: incomplete write (ramdisk too small?) (-28 != 32768)