BLKMEM ARENA QUESTION

[Vikram Mehta]

 Hi folks,

1.)
 I think my kernel can start running from RAM now.

 Though I get a message

 Blkmem: bad access: block=2, count=2 (pos=800, len=0)
 end_request: I/O error, dev 1e:00 (Blkmem), sector 2
 EXT2-fs: unable to read superblock
 Blkmem: bad access: block=0, count=2 (pos=400, len=0)
 end_request: I/O error, dev 1e:00 (Blkmem), sector 0
 romfs: unable to read superblock
 Kernel panic: VFS: Unable to mount root fs on 1e:00

 I never faced this problem when I built a kernel as XIP

2.)I looked up in linux-2.4.x /drivers/block/blkmem.c
there is a line
arena[0].address = (unsigned long)__data_rom_start + (unsigned long)_edata -
(unsigned long)__data_start;

My guess is that this is from where my file system starts.

IN case of XIP kernel it was arena[0].address = 0x10CA7670 +
0x48000 -0x20000. Which is a OK address in FLASH
In case of MY RAM KERNEL it comes out to
0x BCe90 + 0xd812C + 0xBCE90 = 0xd812C.... Serious trouble..... this address
is in RAM...

Am I thinking Right?....
If yes HOw do I find out the correct value of  __data_rom_start and how do I
set it.?

 Vikram