Hi all
I am currently porting the uClinux patch from NXP (LPC22xx) to an Actel M7
A3P-DEV-KIT-SCS. This demo board is an ARM7TDMI-S enabled proASIC3. I am making
good progress so far however I am a bit confused about how to mount the
ROMFS.img file created within uClinux-dist.
The memory map of my system is as follows
00000000 003FFFFF flash
10000000 10100000 ram (only one 1MB!)
I am using xip for the kernel which is loaded into flash at address 230000
and the data and bss areas are relocated to 10008000 and it all boots ok ;-)
however its the next stage that I am having trouble with. I have loaded
ROMFS.img into 340000 and hardcoded at kernel compile time the following
command line kernel parameters
Kernel command line: root=/dev/ram0 initrd=0x00340000,289k
console=ttyS0,115200n8
However I get the following errors from the kernel at boot up
initrd (0x00340000 - 0x00388400) extends beyond physical memory - disabling
initrd
and
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
I think I need to change the command line somehow to get it to boot the ROMFS
xip can anyone help? please
Below is the full kernel output
=> go 230000
## Starting application at 0x00230000 ...
Linux version 2.6.11.8-hsc0 ([EMAIL PROTECTED]) (gcc version 2.95.3 20010315
(release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux
XIP and shared lib patches from http://www.snapgear.com/)) #3 Fri May 23
00:08:42 BST 2008
CPU: Philips-LPC22xx [22000000] (ARMv3)
Machine: LPC22xx, PHILIPS ELECTRONICS Co., Ltd.
initrd (0x00340000 - 0x00388400) extends beyond physical memory - disabling
initrd
Built 1 zonelists
Kernel command line: root=/dev/ram0 initrd=0x00340000,289k
console=ttyS0,115200n8
PID hash table entries: 16 (order: 4, 256 bytes)
Dentry cache hash table entries: 256 (order: -2, 1024 bytes)
Inode-cache hash table entries: 128 (order: -3, 512 bytes)
Memory: 1MB = 1MB total
Memory: 900KB available (574K code, 80K data, 4K init)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Linux NoNET1.0 for Linux 2.6
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing disabled
�ttyS0 at MMIO 0x0 (irq = 1) is a 16550A
io scheduler noop registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
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