Thiemo Seufer wrote: > Rajat Jain wrote: > > Hi, > > > > I'm running an ancient Linux kernel 2.4.20 (please don't ask me why > > :-( ) on a MIPS 4KEC. I am experimenting with initrd and my initrd > > fails to mount. My bootloader (U-BOOT) coorectly loads the initrd into > > RAM as I can see. > > > > I am wondering how does the kernel get to know the address at which > > the initrd is loaded by boot loader? How does the boot loader > > communicate this to the kernel? > > > > I can see that when emebedding root filesystem into kernel image, the > > symbols __rd_start and __rd_end are defined by the linker script and > > hence the kernel gets to know. However, how does this happen when > > bootloader loads the ramdisk and needs to tell the kernel? > > http://www.linux-mips.org/wiki/Kernel_Command_Line_Arguments mentions > rd_start and rd_size which are used for this purpose. ... and they IIRC didn't exist in 2.4.20, but e.g. Debian's 2.4 mips kernels carry a patch to add such support. Thiemo
