[U-Boot-Users] RE: start / load addresses for initrd

Tue Mar 25 18:45:59 CET 2003

Once again - I'm making progress on bringing up Linux
on a custom 405GPr board using u-boot.

First - I got my serial console working in Linux.
I did not have to use TLB's or BAT's to map
the memory addresses of the UART to properly initialize it.

I simply commented out the initialization that is done in
/drivers/char/serial.c for the serial console.  The initialization
that I did in u-boot was sufficient.

So now my printk's can be seen and logged.

At this point I am trying to get the ramdisk working.  The
reason I am posting to this list is that I am not sure of the
command line kernel options for initrd and the ram disk.

Yes - I read the FAQ's at the DENX site, as well as initrd.txt
and I still am mystified as to what is happening.  Below is a log
of the boot attempt - any help would be greatly appreciated:

  U-Boot 0.2.0 (Mar 24 2003 - 11:49:36)  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     Device 0: Model: SanDisk SDCFB-64 Firm: Vdg 8.16. Ser#:
111913G1602X4714
       Type: Removable Hard Disk
       Capacity: 61.2 MB = 0.0 GB (125440 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:    298692 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

=> 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:    298692 Bytes = 291.7 kB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
## Current stack ends at 0x03F9EBD8 => set upper limit to 0x00800000
## cmdline at 0x007FFF00 ... 0x007FFF2F
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     = 00:00:00:00:00:00
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 at hhl) (gcc version 3.2.1 20020930
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 console=ttyS0,9600n8 console=tty0
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 4096K size 1024 blocksize
Tracer: Initialization complete
RAMDISK: Compressed image found at block 0
RAMDISK: incomplete write (ramdisk too small?) (-28 != 32768)

PowerPC Linux Kernel Image (gzip compressed
Jerry Walden