[U-Boot-Users] Ramdisk for MPC8xx

Raghu raghu_dk at yahoo.com
Fri Oct 10 05:17:18 CEST 2003


Hello All, 

I am porting linux-2.4.22 to MPC852T based board. I
have an issue with the Ramdisk. I have a total of 64MB
SDRAM, and I am creating a ramdisk of 32MB. The
compressed Ramdisk file is of 3.4MB size. Look like
when I do the "bootm" command the Ramdisk is
corrupting some important u-boot data. I have the
console dump below. 

Is there a minimal Ramdisk that I can directly use ??

Warm Regards
Raghu.

******************************************************
=>tftpload 1000000 uImage
TFTP from server 10.208.1.90; our IP address is
10.208.1.247
Filename 'uImage'.
Load address: 0x1000000
Loading: #######
done
Bytes transferred = 649227 (9e80b hex)

=>tftpload 2000000 ramdisk
TFTP from server 10.208.1.90; our IP address is
10.208.1.247
Filename 'ramdisk'.
Load address: 0x2000000
Loading:####
done
Bytes transferred = 3685400 (383c18 hex)

=>bootm 1000000 2000000
## Booting image at 01000000 ...
   Image Name:   Linux 2.4.22 Kernel Image
   Image Type:   PowerPC Linux Kernel Image (gzip
compressed)
   Data Size:    649163 Bytes = 633.9 kB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
## cmdline at 0x007FFF00 ... 0x007FFF10
memstart    = 0x00000000
memsize     = 0x04000000
flashstart  = 0xFE000000
flashsize   = 0x00100000
flashoffset = 0x0001B000
sramstart   = 0x00000000
sramsize    = 0x00000000
immr_base   = 0xFF000000
bootflags   = 0x00000001
intfreq     =     50 MHz
busfreq     =     50 MHz
ethaddr     = 00:00:00:00:00:02
IP addr     = 10.208.1.247
baudrate    =  38400 bps
## Loading RAMDisk Image at 02000000 ...
   Image Name:   Linux Ramdisk Image
   Image Type:   PowerPC Linux RAMDisk Image (gzip
compressed)
   Data Size:    3685336 Bytes =  3.5 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Loading Ramdisk to 03bcb000, end 03f4ebd8 ...
******************************************************



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