[U-Boot-Users] Large initramfs

[Templeton, Bill]

Hello,

I'm having trouble getting U-boot (based on 1.3.0) to boot a MV Pro 5.0 (based on 2.6.18) kernel image with a large built-in initramfs on the PPC440 Taishan eval board.  The boot process hangs after the output of "Finalizing device tree..."  I'm attempting to boot the cuImage target.

I've made modifications to U-boot for preparations for our own PPC440 design.  One of the changes was to the file ../lib_ppc/board.c to remove the logic that forces the command line and bd_info structure into the first 8 MB of memory.  However, that didn't help.

I can boot the kernel image if it's built without the initramfs.  That is, I can get past this hang scenario.  Obviously things aren't all that great without out an initramfs or initrd but it seems to prove that the built kernel and my U-boot modifications fundamentally works and leads me to believe the problem is related to the initramfs or its size.

Does anybody have any experience using a kernel+initramfs that is larger than 8MB?  Larger than 16MB?

Any help/comments would be greatly appreciated.

Bill T.


Boot progress 80 (0x50)
Using ppc_4xx_eth0 device
TFTP from server 10.10.5.112; our IP address is 10.10.5.207
Filename 'cuImage.taishan3'.
Load address: 0x8000000
Loading: ##############################################################.
 ....
done
Bytes transferred = 25962438 (18c27c6 hex)
Boot progress 81 (0x51)
Boot progress 84 (0x54)
Boot progress 1 (0x1)
## Booting image at 08000000 ...
Boot progress 2 (0x2)
Boot progress 3 (0x3)
   Image Name:   Linux-2.6.18_pro500-440gx_taisha
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    25962374 Bytes = 24.8 MB
   Load Address: 01c00000
   Entry Point:  01c0040c
   Verifying Checksum ... OK
Boot progress 4 (0x4)
Boot progress 5 (0x5)
Boot progress 6 (0x6)
   Uncompressing Kernel Image ... OK
Boot progress 7 (0x7)
Boot progress 8 (0x8)
## Current stack ends at 0x0FEBE180 => set upper limit to 0x0FEBD980
## cmdline at 0x0FEBD880 ... 0x0FEBD8DE
Boot progress 14 (0xe)
No initrd
## Transferring control to Linux (at address 01c0040c) ...
Boot progress 15 (0xf)
Calling kernel(0x1c0040c): (0febd7d0, 00000000, 00000000, 0febd880, 0febd8de)
CPU clock-frequency <- 0x2f34f600 (792MHz)
CPU timebase-frequency <- 0x2f34f600 (792MHz)
/plb: clock-frequency <- bcd3d80 (198MHz)
/plb/opb: clock-frequency <- 3ef1480 (66MHz)
/plb/opb/ebc: clock-frequency <- 3ef1480 (66MHz)
/plb/opb/serial at 40000200: clock-frequency <- a8c000 (11MHz)
/plb/opb/serial at 40000300: clock-frequency <- a8c000 (11MHz)
Memory <- <0x0 0x0 0x10000000> (256MB)
ENET0: local-mac-address <- 02:0c:4f:35:00:16
ENET1: local-mac-address <- 31:2e:32:00:55:2d

zImage starting: loaded at 0x01c00000 (sp: 0x03732ed0)
Allocating 0x1b27ea4 bytes for kernel ...
gunzipping (0x00000000 <- 0x01c0e000:0x03731378)...done 0x1afa0c0 bytes

Linux/PowerPC load: ip=10.10.5.207:10.10.5.112:10.10.5.1:255.255.255.0:eval1:eth0:off panic=1 console=ttyS1,115200
Finalizing device tree... flat tree at 0x373f3a0

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