Hi Benny, > Hi Michal, > > Good to hear from you. > > You are exactly right about the issue with my FLASH not being mapped to > the end of the memory mapped space. Hence, the initial boot code could > not jump far enough to it. > > I need a 64k BRAM block sitting on the end of memory address so I can't > back my FLASH mapping right up to FFFFFFFF. However, I am trying to get > it close enough so that the branch code can reach.
:-) > I am not sure if this is what you meant by "my target file is huge". > But hey let me know if I am wrong. That was only my suggestion. Microblaze is still my mainstream. I haven't built ppc440 code. Cheers, Michal > > Cheers, > B. > > -----Original Message----- > From: Michal Simek [mailto:[EMAIL PROTECTED] > Sent: Thursday, 6 November 2008 4:13 AM > To: Benny Chen > Cc: Ricardo; u-boot@lists.denx.de > Subject: Re: > =?us-ascii?Q?Re=3A=20=5BU=2DBoot=5D=20MAKEALL=20ml507=5Fflash=20return=2 > 0=22Not=20enough=20room=20for > > Hi Benny and Ricardo, > > How are you Benny? > > I am not xilinx ppc expert but it seems to me that your problem is in > Flash > baseaddr. I haven't worked with ppc440 but I worked with ppc405. > The point is that ppc starts on specific address. I think from end of > memory > space (address like 0xFFFFFFFC or any similar). Look at u-boot-rom.lds > in xilinx > folder. Then is jump in one page and there is relocation to ram. It is > not hard > to understand that - everything is in U-BOOT code. > And in your case where the flash has lower address your compilation > seems to me > failed on linking because your target file is huge. You should move > flash memory > to the end of memory space. > > PPC is a little bit different than Microblaze which you know. But you > can of > course add there bram memory and do any wrapper there. > > Cheers, > Michal > > > >> Hi Ricardo, >> >> Thanks for helping with this issue. My real option is to do a long > jump to the _start code. However, I am not familiar with the PPC > assembler hence, I am not able to get the longcall working. >> _start is written in assembler in cpu/ppc_4xx/start.S therefore, I > need to do a longcall from assembler which I am not sure how to do. > Could you please help advise on how I can do a longcall in assembler? >> Further, investigation I found that the other option is to do a > function pointer call to _start. When written in C this should force > the use of the CTR register which is 32-bit to hold the _start address. > But I don't know how to do this in assembler. If you have any idea on > this it would be much appreciated. >> >> Thanks once again mate. >> >> Regards, >> Benny >> >> >> -----Original Message----- >> From: Ricardo [mailto:[EMAIL PROTECTED] >> Sent: Tue 04/11/2008 19:13 >> To: Benny Chen >> Cc: u-boot@lists.denx.de >> Subject: Re: [U-Boot] MAKEALL ml507_flash return "Not enough room for > programheaders" error >> >> Hello Benny >> >> Maybe if you move your _start to the booptg section you will solve >> your problem.... or you can also modify the jump to be a long jump. >> >> >> Best regards >> >> On Tue, Nov 4, 2008 at 06:11, Benny Chen <[EMAIL PROTECTED]> > wrote: >>> Hi Ricardo, >>> Changing my tool chain to the ELDK 4.2 ppc-linux-x86 does build the >>> default ml507_flash project. However, because my hardware design > does >>> not map the FLASH chip to 0xFE000000 but to 0x86000000 the build > failed >>> with the following error. >>> >>> /******************************/ >>> cpu/ppc4xx/start.o: In function `rsttlb': >>> >>> /usr/local/groundprobe/src/Bootloader/u-boot/cpu/ppc4xx/start.S:493: >>> relocation truncated to fit: R_PPC_REL24 against symbol `_start' > defined >>> in .text section in cpu/ppc4xx/start.o >>> /*****************************/ >>> >>> I think this issue maybe to do with the 24bit branch address limit > with >>> the PPC440x5 core. Here the _start_440 function calls a "b _start" > and >>> in this case the _start is mapped to flash in address 0x8600xxxx. >>> Meaning we now need to branch from 0xFFFFFxxx to 0x8600xxxx. I think >>> this is why the linker failed at the last stage. >>> >>> Does anyone have any idea with this issue? >>> >>> Regards, >>> Benny >>> >>> -----Original Message----- >>> From: Ricardo [mailto:[EMAIL PROTECTED] >>> Sent: Monday, 3 November 2008 6:26 PM >>> To: Benny Chen >>> Cc: u-boot@lists.denx.de >>> Subject: Re: [U-Boot] MAKEALL ml507_flash return "Not enough room for >>> programheaders" error >>> >>> Hello Benny >>> >>> I have just checkout the build of the ml507_flash and works ok for > me >>> [EMAIL PROTECTED]:~/curro/qtec/u-boot$ ./MAKEALL ml507_flash >>> Configuring for ml507 board... >>> text data bss dec hex filename >>> 202132 10476 30032 242640 3b3d0 ./u-boot >>> >>> >>> I remember that when I was using another toolchain the final link >>> failed (but showing different error). Try with another toochain, I am >>> using one produced by OpenEmbedded, but you will get the same results >>> with the ELDK >>> >>> >>> Best regards >>> >>> >>> >>> On Mon, Nov 3, 2008 at 07:59, Benny Chen <[EMAIL PROTECTED]> >>> wrote: >>>> Hi there, >>>> >>>> I am trying to build a U-Boot image for the ML507 board running from >>>> FLASH and got the "Not enough room for program headers" error. >>>> >>>> >>>> >>>> The main difference for my setup is the toolchain. I am using the >>>> powerpc-eabi-ld linker from Xilinx's EDK tool chain to build the >>>> ml507_flash design for U-Boot. >>>> >>>> >>>> >>>> I have seen a patch on the linker script for the mpc8555cds board > and >>>> tried adding the patch to the Xilinx/ppc440-generic/u-boot-rom.lds > but >>>> got the "relocation truncated to fit R_PPC_REL24" error. >>>> >>>> Before going further with debugging this problem, I would like to >>> check >>>> if this problem is due to the powerpc-eabi tool chain from Xilinx? >>>> >>>> >>>> >>>> Thanks for your help. >>>> >>>> >>>> >>>> Regards, >>>> >>>> Benny >>>> >>>> >>>> >>>> $ ./MAKEALL ml507_flash >>>> >>>> Configuring for ml507 board... >>>> >>>> powerpc-eabi-ld: u-boot: Not enough room for program headers >>> (allocated >>>> 2, need 5) >>>> >>>> powerpc-eabi-ld: final link failed: Bad value >>>> >>>> make: *** [u-boot] Error 1 >>>> >>>> size: './u-boot': No such file >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> U-Boot mailing list >>>> U-Boot@lists.denx.de >>>> http://lists.denx.de/mailman/listinfo/u-boot >>>> >>>> >>> >>> -- >>> Ricardo Ribalda >>> http://www.eps.uam.es/~rribalda/ >>> >> >> >> >> > ------------------------------------------------------------------------ >> _______________________________________________ >> U-Boot mailing list >> U-Boot@lists.denx.de >> http://lists.denx.de/mailman/listinfo/u-boot > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
