You have to look at the System.map file, find the __log_buf symbol, and then look at the address manually.
Steve > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:linuxppc-embedded- > [EMAIL PROTECTED] On Behalf Of Ricardo Ayres Severo > Sent: Monday, January 28, 2008 2:53 PM > Cc: [email protected] > Subject: Re: Linux boot on a ppc 405 > > Grant, > > my output is the following: > > loaded at: 00400000 004E919C > > board data at: 00000000 0000007C > > relocated to: 00404040 004040BC > > zimage at: 00404E2C 004E620A > > avail ram: 004EA000 8DA05119 > > > Linux/PPC load: console=ttyUL0,9600 > > Uncompressing Linux...done. > > Now booting the kernel > > > > nothing shows up next. > I tried to look at __log_buf but the debugger doesn't recognize it. > The debugger only knows the code of the part that boots the kernel. > I also tried setting ttyUL0 and ttyS0 for the linux console. > Any ideas of how I can get the real position of __log_buf? > > Thanks, > > On Jan 27, 2008 7:15 PM, Grant Likely <[EMAIL PROTECTED]> wrote: > > On 1/27/08, Ricardo Severo <[EMAIL PROTECTED]> wrote: > > > Hi all, > > > > > > I am working with a Xilinx Virtex II Pro evaluation board, wich has two > > > PowerPC 405 and I'm trying to boot a vanilla linux kernel 2.6.23.14. > > > Until now I've manged to make it uncompress the kernel, but it doesn't boot. > > > My question is how the initial execution (the one who uncompresses the > > > kernel image) transfers the processor to the kernel itself. I've looked > > > in the arch/ppc/boot/simple/relocate.S code and it jumps to the position > > > 0x0 after uncompressing, is it right? The kernel is uncompressed at that > > > position? > > > > Post your output log please. > > > > If your getting a message that the kernel is uncompressing, but you > > don't have any output beyond that then most likely your console is not > > setup correctly. If you've got a debugger, look at memory at the > > __log_buf location to see if there are any boot logs there. > > > > Cheers, > > g. > > > > > > -- > > Grant Likely, B.Sc., P.Eng. > > Secret Lab Technologies Ltd. > > > > > > -- > Ricardo Ayres Severo <[EMAIL PROTECTED]> > _______________________________________________ > Linuxppc-embedded mailing list > [email protected] > https://ozlabs.org/mailman/listinfo/linuxppc-embedded _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
