Rakesh, in init/main.c you can add to root_dev_names[] your root device (e.g. "mtdblock2" 0x1f02).
You have to specify somehow to use this device then, as kernel parameter. I use root_string in arch/ppc/[mbxboot][simple]/misc.c: char *root_string = "root=/dev/mtdblock2 rw init=/linuxrc"; Jaap-Jan Rakesh jagota wrote: > > Hi all, > > I am working on custom design board based on IBM405 PPC. I am using OpenBios > code and Linux -2.4.17 version from montavista. I have compiled the kernel > with JFFS2 support. > > In linux/drivers/mtd/maps/redwood.c files, we have modified the partitions as > per our board > > Our board is having 4MB flash and 32MB sdram. > > #define WINDOW_ADDR 0xFFC00000 > #define WINDOW_SIZE 0x00400000 > > we filled the redwood_flash_partitions structure as below > > name: "Redwood kernel", > //"/dev/mtd0" > offset: 0x00010000, > size: 0x00110000 > > name: "Redwood OpenBIOS Vital Product Data", > //"/dev/mtd1" > > offset: 0x00000000, > size: 0x00010000, > mask_flags: MTD_WRITEABLE > > name: "Redwood filesystem", > //"/dev/mtd2" > offset: 0x00110000, > size: 0x002D0000 > > name: "Redwood OpenBIOS", > //"/dev/mtd3" > offset: 0x003E0000, > size: 0x00020000, > mask_flags: MTD_WRITEABLE /* force read-only */ > > i have created a jff2 image and flashed in the mtd2 block. But while booting > i am getting kernel panic > =============================================== > > kernel panic: I have no root and I want to scream > > =============================================== > > how to tell the kernel that the root filesystems is in mtdblock2 > > Thanks & Regards, > > rakesh > -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
