Hi,
I'm trying to boot Sandpoint linux on my board but I can't get initrd
to load. I'm not using any special bootloader.
I compiled the kernel using make zImage.initrd (my initrd ramdisk is
smaller than 4 MB) and I added root=/dev/ram to the cmd_line in the
function sandpoint_setup_arch() from sandpoint_setup.c. I know I
shouldn't have to do this (acording to the HOWTO), but I am so
clueless about the cause of the problem that I'm ready to try anything.
The kernel loads until the function mount_root() (in fs/super.c).
This is where it stops:
retval = blkdev_get(bdev, mode, 0, BDEV_FS);
if (retval == -EROFS) {
root_mountflags |= MS_RDONLY;
retval = blkdev_get(bdev, FMODE_READ, 0, BDEV_FS);
}
if (retval) {
/*
* Allow the user to distinguish between failed open
* and bad superblock on root device.
*/
printk ("VFS: Cannot open root device \"%s\" or %s\n",
root_device_name, kdevname (ROOT_DEV));
printk ("Please append a correct \"root=\" boot
option\n");
panic("VFS: Unable to mount root fs on %s",
kdevname(ROOT_DEV));
}
With the help of a debugger, I found out that:
root_device_name = ram
ROOT_DEV = 0x0100 /* which is ram according to init/main.c */
So if the root_device points to ram like it should, does anybody know
why it can't open the root device?
The kernel has been copied at address 0 of the RAM on the board along
with initrd (there's no hard-drive or flash, just ram). Do I need to
set something before I launch the kernel? I tought everything was setup
up correctly when I did make zImage.initrd ! (INITRD_OFFSET and
INITRD_SIZE should be set by make zImage.initrd, right?)
Any help would be appreciated !
S?bastien C?t?
(Sorry if you received this e-mail twice but it didn't seem to go
through the first time)
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