From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <19991123215733.22049.rocketmail@web306.mail.yahoo.com> Date: Tue, 23 Nov 1999 13:57:33 -0800 (PST) From: Brian Kuschak Subject: Re: need suggestions To: Jim Chapman , LiuTao Cc: LinuxPPC Developers List , "linuxppc-embedded@lists.linuxppc.org" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Jim, Here's yet another way to do it. We used a section called .gzimage, but you could just as easily add it to .text instead. Instead of using the link/objcopy/compile/link method in the Makefile, do this instead: zvmlinux: $(OBJECTS) ../coffboot/vmlinux.gz $(OBJCOPY) $(OBJCOPY_ARGS) -R .gzimage gzimage.o $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment --add-section=.gzimage=../coffboot/vmlinux.gz --set-section-flags=.gzimage=alloc,load,readonly,data gzimage.o $(LD) $(ZLINKFLAGS) -o $@ $(OBJECTS) powerpc-elf-strip --strip-all $@ Create a dummy file called gzimage.c, where the zImage data will be copied into section .gzimage: /* * gzimage.c * * dummy file to allow a compressed zImage to be added * into a linker section, accessible by the boot code. */ char dummydummy; Then add the following to the vmlinux.lds script, and reference these symbols in your loader as extern char[]. Modify the loader to load zImage data from these addresses instead. I think this method will work for initrd as well. /* For loader only: Put the zImage after everything * else */ _gzstart = . ; .gzimage : { *(.gzimage) } _gzend = . ; -Brian Kuschak > ... had to find > a way to put the > image section inside the text segment so that the > image data would be > copied by the vxworks bootrom. There may be a clever > way to do that > using ld scripts... ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/