From mboxrd@z Thu Jan 1 00:00:00 1970 From: Txema Lopez Date: Tue, 13 Feb 2007 10:25:12 +0100 Subject: [U-Boot-Users] [PATCH] Fixup relocation patch. Message-ID: <45D183F8.8050707@aotek.es> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi all, This is a patch to make relocation simpler and more reliable. It's for a 1.1.6 U-Boot version. The FIXUP section in U-Boot is empty so when U-Boot is relocated from flash to sdram these lines in the file start.S have no effect: /* * Now adjust the fixups and the pointers to the fixups * in case we need to move ourselves again. */ 2: li r0,__fixup_entries at sectoff@l lwz r3,GOT(_FIXUP_TABLE_) cmpwi r0,0 mtctr r0 addi r3,r3,-4 beq 4f 3: lwzu r4,4(r3) lwzux r0,r4,r11 add r0,r0,r11 stw r10,0(r3) stw r0,0(r4) bdnz 3b 4: Because of it, in some places of U-Boot the relocation must be done manually: i.e malloc_bin_reloc(). I submit the patch only for the Lite5200 boards and the rest of boards will be not affected. If someone want to use or test the fixup relocation for his board only has to do two changes: - cleanup the fixup section from the text section in the u-boot.lds file. - define CFG_FIXUP_RELOCATION in the board configuration file. I'm not sure if this patch could work for not PowerPC based architectures. By example, taking a look in the U-Boot starting files for mips and bf533 cpu's, it seems that only the GOT section is relocated in ram, so the patch probably won't work. Signed-off-by: Jose Maria Lopez CHANGELOG * Make relocation simpler and more reliable for Lite5200 boards: Patch by Jose Maria Lopez, 13 February 2007 Best regards, -------------- next part -------------- A non-text attachment was scrubbed... Name: fixup.patch Type: text/x-patch Size: 6074 bytes Desc: not available Url : http://lists.denx.de/pipermail/u-boot/attachments/20070213/330e7104/attachment.bin -------------- next part -------------- A non-text attachment was scrubbed... Name: tlopez.vcf Type: text/x-vcard Size: 324 bytes Desc: not available Url : http://lists.denx.de/pipermail/u-boot/attachments/20070213/330e7104/attachment.vcf