Xavier Pegenaute <[EMAIL PROTECTED]> writes: > Hi, > > > On Tue, 2003-07-08 at 02:03, Eric W. Biederman wrote: > > > 1) We want start an ELF binary (not payload) that is in DoC (p.e.) after > > > LinuxBios. Then we execute elfboot() that look inside the ROM for the > > > next code starting with a valid ELF header, build the segments, copy the > > > segments and give the control to the program. > > > > > > No problem in this case, i think. > > > > Sounds like standard use. > > > > > 2) We want start a Linux Kernel that is recorded (neither payload) after > > > LinuxBios binary in DoC (p.e.), then we execute linuxbiosmain() and in > > > the end of this function we make a long jump to 0x90000. > > > > Linuxbiosmain() is deprecated code and it always jumps to 0x100000 1MB. > > Anything is not done. And everyone is encouraged not to use linuxbiosmain > > for new deployments. > > > > > Here, i don't see what function in linuxbiosmain() copy the code of > > > Kernel to DRAM.Any one know it ? > > > > It is the gunzip part. But please don't use that. > > The problem, is that, if i follow the instructions of > freebios/HOWTO/SiS630, the linux kernel binary generated doesn't has > elfheader. > > Then if i want to use the standard use, i have apply some external > utility to generate an elf file (mkelfImage) and put in config file > "fileoption USE_ELF_BOOT=1". Is it right ?
Essentially correct. MkelfImage takes a standard x86 linux kernel and wraps so it is a bootable ELF executable. The latest mkelfImage can be found at: ftp://ftp.lnxi.com/pub/mkelfImage/ > Another think, i thought that the Linux Kernel alone has the code to > decompress himself (in the same way that we can put Kernel in a floppy > disk and it decompress alone. (dd if=kernel of=/dev/fd0)) The strange choices in linuxbios main where it decompresses the kernel instead of using the kernels own decompressor, are among the many reasons it is deprecated. Eric _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
